CN101186150A - Liquid-jet apparatus - Google Patents
Liquid-jet apparatus Download PDFInfo
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- CN101186150A CN101186150A CNA2007101886467A CN200710188646A CN101186150A CN 101186150 A CN101186150 A CN 101186150A CN A2007101886467 A CNA2007101886467 A CN A2007101886467A CN 200710188646 A CN200710188646 A CN 200710188646A CN 101186150 A CN101186150 A CN 101186150A
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Abstract
Provided is a liquid-jet apparatus which can suppress liquid consumption by preventing air that can turn into bubbles from entering a liquid introducing columnar body in replacement of a liquid storage member and thus reducing a frequency of execution of a cleaning operation for discharging the bubbles inside a liquid passage. An ink introducing needle 21 in a printer includes: a needle-like protrusion 23 having a tapered portion 48 whose diameter is gradually increased toward its base from its tip; and a straight portion 51 formed linearly and continuously from the tapered portion 48 . In the tapered portion 48 of the needle-like protrusion 23 in the ink introducing needle 21 , groove portions 54 extending to an edge portion of the tapered portion 48 are provided.
Description
Technical field
The present invention relates to liquid injection apparatus such as inkjet recording device, particularly relate to and liquid is preserved the liquid preserved in the member import to the jet head liquid side by the liquid implanting needle, and from the liquid injection apparatus of the nozzle opening ejection liquid of this jet head liquid.
Background technology
As having the jet head liquid that can spray liquid, and spray the representative of the liquid injection apparatus of various liquid from this injector head, for example can enumerate as the record-paper ejection of ejection object (recording medium) and hit ink droplet, thus the image recording structures such as ink-jet printer that write down.In addition, in recent years, be not limited to this image recording structure, also be applied to various manufacturing installations.For example, in LCD, plasma scope, organic EL (Electro Luminescence) display or FED display manufacturing apparatus such as (face active displays), device as the liquid various materials that are used for image forming area or electrode formed ejection look material such as zone or electrode etc. uses liquid injection apparatus.
As this liquid injection apparatus, developed the liquid injection apparatus that various uses are circulated easily, the liquid of easy to handle box type is stored member.For example, in ink-jet printer (following is called printer), use the ink-jet printer of the print cartridge of enclosing liquid ink extensively to popularize.In this structure, print cartridge is installed in the print cartridge installation portion, ink implanting needle (liquid importing column) is inserted in the print cartridge, the ink introduction port (liquid entrance hole) that wears by front end (tapered portion) side at this ink implanting needle is that the record head side imports with the ink in the print cartridge to a kind of of jet head liquid thus.In addition, general in such print cartridge, in order to prevent that ink is to the leakage of outside and the evaporation of ink, the peristome that is arranged on the cushion inlet (flow export of ink) of its bottom surface sections is sealed by the resin film (sealing film) by the thin formations such as PP (polypropylene) that can rupture, to the installation of printer the time, the ink implanting needle makes the fracture of sealing film, inserts in the cushion inlet.
In the structure of using such print cartridge, the state that the ink flow path of the nozzle opening from the ink implanting needle to record head (liquid flow path) is full of by ink is desirable, but because the replacing of print cartridge etc., bubble enters in the ink flow path sometimes, is difficult to prevent fully it.This be because, when untapped print cartridge is installed, in the cushion inlet that the ink implanting needle is pressed into print cartridge, the sealing film of this cushion inlet ruptures under the effect of the front end of ink implanting needle, but when this ruptures, the sealing film deflection, temporarily be close to the front of ink implanting needle, under this was close to state, the air that compresses between sealing film and ink implanting needle entered in the ink implanting needle from ink introduction port, becomes bubble.And, the bubble that enters in the ink flow path is grown up change greatly gradually, if excessively the part of the bubble of growing up moves to balancing gate pit's side by flowing of ink, then might cause unfavorable conditions such as following: the pressure oscillation when bubble absorbs the ejection action and cause the pressure loss, perhaps gas bubble blockage stream and cause the undersupply of ink.
In order to prevent the caused problem of such bubble, following liquid injection apparatus has been proposed: in the wide diameter portion on the cardinal extremity that is formed on the ink implanting needle, establish a plurality of ribs from the inner peripheral surface of this wide diameter portion to the center is prominent, and form bubble chamber by two ribs divisions that make progress adjacent in week, by the potential energy that flows down by the ink in the ink implanting needle, the bubble of filter top (upstream side) is moved in the bubble, bubble is increased with respect to the contact area of filter, thus, the discharge efficient of bubble is improved, bubble is discharged (for example, with reference to patent documentation 1) to the record head outside.
[patent documentation 1] spy opens the 2006-069168 communique
, the situation that the invention of patent documentation 1 does not enter bubble in the ink implanting needle prevents trouble before it happens, and just handles the bubble that has entered.Therefore, in order to discharge the bubble in the ink implanting needle, the cleaning action of the ink stream of the several times flow velocity in the time of need frequently producing operation of recording exists ink by the problem of unnecessary waste.
Summary of the invention
The present invention proposes in view of such situation, its purpose is, when being provided at the replacing of liquid storage member, the air that inhibition becomes bubble enters in the liquid importing column, thereby reduce the execution number of times of the cleaning action be used to discharge the bubble in the liquid flow path, can suppress the liquid injection apparatus of the consumption of liquid.
The present invention's one mode that realizes described purpose provides a kind of liquid injection apparatus, and it comprises: liquid is stored member, and it is at internal storage liquid and have the flow export of the outlet that becomes this liquid; Liquid is stored the member installation portion, and it can be installed this liquid with loading and unloading and store member; Liquid imports column, and the liquid of under its state in the flow export that inserts the described liquid storage member of being installed this liquid being stored in member imports in the liquid flow path of inside from the liquid entrance hole; Jet head liquid, it can import the liquid that column imports from the nozzle opening ejection from this liquid by the work of organization of stres, described liquid injection apparatus is characterised in that, described liquid imports column by constituting in the face of the front end face of described flow export with straight portion that this front end face forms continuously, is provided with slot part at the front end face of described liquid importing column.
In such mode, at the front end face that imports the containment member of column in the face of liquid slot part is set, so be installed to liquid when storing the member installation portion liquid being stored member, even air is compressed between the front end face of containment member and liquid importing column, this air is flowed out to the outside that liquid imports column by described slot part.Therefore, when liquid being installed storing member, the air that can suppress to become bubble enters the inside of liquid importing column.Therefore, compared with the past, can reduce the execution frequency that is used for influent is imported the cleaning action that the bubble in the column discharges to the outside.Its result can reduce the consumption of the ink that is accompanied by cleaning action.
Here, preferred, the border that connects described front end face and described straight portion forms described slot part.Thus, slot part connects liquid and imports the border of the front end face of column and straight portion and form, so when liquid storage member is installed, even containment member seals on the whole at the front end face that liquid imports column, the air that containment member and liquid are imported between the front end face of column flows out to the outside by slot part.
In addition, preferred, described slot part extends the way of described straight portion continuously from described front end face.Thus, slot part extends straight portion continuously from the front end face that liquid imports column, so when liquid storage member is installed, straight portion is close to even the end face integral body that containment member imports column from liquid collapses, and the air that containment member and liquid are imported between the end face of column flows out to the outside reliably by the slot part that extends straight portion.
In addition, preferred, wear described liquid entrance hole with state to described slot part inner opening.Thus, under the state of described slot part inner opening, wearing the liquid entrance hole, therefore, when liquid being installed storing member, the liquid entrance hole can be not directly and containment member be close to.Therefore, containment member and liquid import the difficult liquid entrance hole that directly is pressed into of air between the column.Therefore, when liquid is stored the installation of member, can suppress air more reliably and enter in the liquid importing column from the liquid entrance hole.
In addition, preferred, described liquid imports column and possesses nadel portion, and described nadel portion has from front end to the base end side tapered portion of hole enlargement gradually, and described front end face is the taper surface of described nadel portion.Thus, the front end that liquid imports column becomes the nadel portion with tapered portion, makes the containment member fracture easily so liquid imports column.
In addition, preferred, described liquid is stored the described flow export of member by the containment member sealing along a direction fracture, and the described slot part of described liquid importing column forms along the direction of described containment member fracture.Thus, can reduce the part that slot part is covered by containment member, so the flow export of member can more liquid be stored and the air that stops up between its containment member is discharged to the outside.
In addition, another way of the present invention provides a kind of liquid injection apparatus, and it comprises: liquid is stored member, and it is at internal storage liquid and have the flow export of the outlet that becomes this liquid; Liquid is stored the member installation portion, and it can be installed this liquid with loading and unloading and store member; Liquid imports column, and the liquid of under its state in the flow export that inserts the described liquid storage member of being installed this liquid being stored in member imports in the liquid flow path of inside from the liquid entrance hole; Jet head liquid, it can import the liquid that column imports from the nozzle opening ejection from this liquid by the work of organization of stres, described liquid injection apparatus is characterised in that, described liquid is stored the described flow export of member by the containment member sealing along a direction fracture, the front end face in the face of described containment member that imports column at described liquid forms jut, and the length direction of described jut constitutes with the direction of described containment member fracture and intersects.
In such mode, can reduce the zone stopped up by jut in the peristome of containment member, so liquid can be stored the flow export of member and the air that stops up between its containment member is discharged to the outside more.Therefore, when liquid being installed storing member, the air that can suppress to become bubble enters the inside of liquid importing column.Therefore, compared with the past, can reduce the execution frequency that is used for influent is imported the cleaning action that the bubble in the column discharges to the outside.Its result can reduce the consumption of the ink that is accompanied by cleaning action.
Here, preferred, described liquid imports column and has the continuous shoulder of base end side with described nadel portion, and described liquid entrance hole is located on the described shoulder.Thus, liquid entrance hole and containment member directly are not close to.Therefore, the air between the outer surface of the shoulder of containment member and liquid importing column is difficult for directly being pressed into the liquid entrance hole.Therefore, when liquid is stored the installation of member, can further suppress air and enter in the liquid importing column from the liquid entrance hole.
Description of drawings
Fig. 1 is the stereogram of printer.
Fig. 2 is the exploded perspective view of record head.
Fig. 3 is the vertical view of record head.
Fig. 4 is the cutaway view of record head.
Fig. 5 be record head want portion's cutaway view.
Fig. 6 is the stereogram of print cartridge.
Fig. 7 is the vertical view and the cutaway view of ink implanting needle.
Fig. 8 is the cutaway view of print cartridge when the ink implanting needle is installed.
Fig. 9 is the cutaway view of print cartridge when the ink implanting needle is installed.
Figure 10 is the vertical view of ink implanting needle.
Figure 11 is the cutaway view of the cushion intake section of print cartridge.
Figure 12 is the stereogram of the valve body of print cartridge.
Figure 13 is the vertical view of cushion inlet and ink implanting needle and the cutaway view of ink implanting needle.
Figure 14 be print cartridge when the ink implanting needle is installed cutaway view and to view.
Figure 15 be print cartridge when the ink implanting needle is installed cutaway view and to view.
Figure 16 is the vertical view of cushion inlet and ink implanting needle and the cutaway view of ink implanting needle.
Figure 17 is the cutaway view of ink implanting needle.
Figure 18 is the vertical view of ink implanting needle.
Figure 19 is the vertical view of cushion inlet and ink implanting needle and the cutaway view of ink implanting needle.
Figure 20 be print cartridge when the ink implanting needle is installed cutaway view and to view.
Figure 21 be print cartridge when the ink implanting needle is installed cutaway view and to view.
Symbol description
The 1-printer; The 2-recording medium; The 3-record head; The 4-balladeur train; 5-balladeur train travel mechanism; The 6-paper advance mechanism; The 7-print cartridge; 8-is with synchronously; The 9-pulse motor; The 10-guide rod; The 12-cover pressing mechanism; 12 '-lid member; 13-pump unit; The 14-nozzle opening; 15-implanting needle unit; 15 '-print cartridge installation portion; 16-box; The 17-channel unit; 18-oscillator unit; The 19-filter; 21,21A, 21B, 21C-ink implanting needle; 23-nadel portion; The 23A-jut; The 24-ink introduction port; The 25-circuitry substrate; The 26-piezoelectric vibrator; The 27-thin-plate element; 28-accommodates sky portion; The 29-stream forms substrate; The 30-nozzle plate; The 31-oscillating plate; The 32-head-shield; The shared ink chamber of 33-; The 34-ink supply port; The 35-balancing gate pit; 37-stream; The 38-ink imports the road; 40-island portion; 41-piezoelectric vibrator group; The 42-fixed head; 44,44A-cushion inlet; The 45-containment member; The 46-sealing film; The 48-tapered portion; The 51-straight portion; The 52-wide diameter portion; 54,54A, 54B-slot part; The 60-valve body; 110-opens the space; The X-rift direction.
The specific embodiment
(embodiment 1)
Below, with reference to accompanying drawing, illustrate to be used to implement best mode of the present invention.Also have, in embodiment described below,, carried out various qualifications, but scope of the present invention is as long as the record of the unqualified meaning of the present invention in the following description then is not limited to these modes as preferred concrete example of the present invention.In addition, in the present embodiment, be that inkjet recording device (below, printer) describes for example with the liquid injection apparatus of representative.
Here, Fig. 1 is to be the stereogram of the printer of representative with the inkjet recording device, and Fig. 2 is the exploded perspective view of record head, and Fig. 3 is the vertical view of record head, and Fig. 4 is the cutaway view of record head, Fig. 5 be record head want portion's cutaway view.
At first, with reference to Fig. 1, the schematic configuration of the inkjet recording device that carries record head (liquid injection apparatus a kind of, below be called printer) is described.The printer of enumerating 1 is the ink to the surface of recording mediums such as record-paper (ejection object) 2 ejection droplet-like, carries out the device of the record of image etc.The paper advance mechanism 6 that this printer 1 has record head 3, the balladeur train 4 of this record head 3 is installed, this balladeur train 4 is carried along sub scanning direction (with the direction of main scanning direction quadrature) in balladeur train travel mechanism 5 that main scanning direction moves back and forth, with recording medium 2.Here, described ink is a kind of of liquid of the present invention, is stored in the print cartridge 7 (liquid is stored a kind of of member).This print cartridge 7 is releasably installed with respect to the balladeur train 4 of record head 3.
Described balladeur train travel mechanism 5 has and is with 8 synchronously.And this is with 8 synchronously by 9 drivings of DC motor isopulse motor.Therefore, if pulse motor 9 work, then balladeur train 4 is moved back and forth at main scanning direction (width of recording medium 2) by guide rod 10 guiding that are erected on the printer 1.
Non-posting field at printer 1 is an original position configuration cover pressing mechanism 12.Cover pressing mechanism 12 has the hypocraterimorphous lid member 12 ' that can contact with the nozzle formation face of record head 3.In this cover pressing mechanism 12, working as the empty portion of sealing in the space in the lid member 12 ', can be close to state and nozzle formation face that the nozzle opening 14 (with reference to Fig. 5) that makes record head 3 in sealing sky portion is faced.In addition, on this cover pressing mechanism 12, connect pump unit 13,, can make negative pressureization in the empty portion of sealing by the work of this pump unit 13.And, if under the state of being close to nozzle formation face, make 13 work of pump unit, and make sealing empty portion (confined space) negative pressureization, then ink or the bubble that attracts in the record head 3 from nozzle opening 14 discharged in the sealing sky portion of lid member 12 '.That is, this cover pressing mechanism 12 constitutes, and attracts the ink of (in the ink flow path) in the discharge recording head 3 or the cleaning action of bubble forcibly.This cleaning action is covered member 12 ' and is close to and makes 13 work of pump unit under the state on the nozzle formation face making, the ink stream of the several times flow velocity when in ink flow path (ink imports road 38), producing common operation of recording, the bubble that swims in the wide diameter portion of describing later 52 is flowed with this ink stream, thus, push and top (upstream side) by filter 19 and move to the downstream, the a series of ink flow path in the downstream by filter 19 is discharged to the outside of record head 3 from nozzle opening 14.
Below, the structure of declare record head 3.The record head of enumerating 3 roughly is made of implanting needle unit 15, a box 16, channel unit 17 and oscillator unit 18 etc.
Implanting needle unit 15 for example is made of synthetic resin, as shown in Figure 3, a plurality of print cartridge installation portions 15 ' (liquid is stored a kind of of member installation portion) is set in the above.Under the state that accompanies the filter 19 that is used to filter the ink in the ink flow path, ink implanting needle 21 (be equivalent to liquid of the present invention and import column) is so that the outstanding upward state of front end is installed in each print cartridge installation portion 15 ' respectively.In addition, at these print cartridge installation portions 15 ' print cartridge 7 of having stored various inks is installed.If in print cartridge installation portion 15 ' installation print cartridge 7, the then inside of ink implanting needle 21 insertion print cartridges 7.Thus, the ink flow path of the ink storage space of the inside of print cartridge 7 and record head 3 inside is communicated with by the ink introduction port 24 (with reference to Fig. 7) that the front end at ink implanting needle 21 wears, and imports in the record heads 3 by ink introduction port 24 at the ink of the internal storage of print cartridge 7.Also have, the details of print cartridge 7 and ink implanting needle 21 will be described later.
And the implanting needle unit 15 of described print cartridge installation portion 15 ' opposition side below and above the box 16 between, as shown in Figure 2, circuitry substrate 25 is installed.This circuitry substrate 25 for example has and is used for supply with driving the circuit pattern of signal and the connector that is used for being connected with the printer main body side etc. to piezoelectric vibrator 26 (with reference to Fig. 5).And this circuitry substrate 25 is installed on the implanting needle unit 15 by the thin-plate element 27 that works as seal.
The stream that engages with nozzle plate 30 forms substrate 29 as shown in Figure 5, be under the state of dividing with the next door corresponding with each nozzle opening 14 and formed the shared ink chamber 33 of the empty portion of a plurality of conducts, as the balancing gate pit 35 of empty portion, and as the tabular component of the ink supply port 34 of their interconnecting part of connection.For example, the etch processes silicon wafer can be made this stream and form substrate 29.Described balancing gate pit 35 with the direction of row set direction (nozzle rows direction) quadrature of nozzle opening 14 on form as elongated chamber.In addition, shared ink chamber 33 is streams 37 of forming by the short transverse that connects a box 16 (liquid flow path a kind of) and the ink of ink implanting needle 21 imports road 38 (liquid flow path a kind of.With reference to Fig. 7) be communicated with, import the chamber of the ink of storing in the print cartridge 7.And the ink that imports in this shared ink chamber 33 offers each balancing gate pit 35 by ink supply port 34.
The oscillating plate 31 that becomes the another side side engagement of opposition side with nozzle plate 30 that forms substrate 29 at stream is double-deck composite boards that the lamination process elastic film forms on metal gripper shoes such as stainless steel.Be formed for engaging the island portion 40 of front end of the free end of piezoelectric vibrator 26 in the part corresponding with balancing gate pit 35 of this oscillating plate 31, this part works as barrier film.In addition, an opening surface of oscillating plate 31 sealings the becoming empty portion of shared ink chamber 33 also works as flexible part.About the part that works as this flexible part, be elastic film.
Described oscillator unit 18 as shown in Figure 5, by as piezoelectric vibrator group 41, the fixed head 42 that engages with this piezoelectric vibrator group 41 of organization of stres, be used for flexible cable formations such as (not shown) that piezoelectric vibrator group 41 is supplied with from the driving signal of circuitry substrate 25.The piezoelectric vibrator group 41 of present embodiment has a plurality of piezoelectric vibrators 26 that row are made as the broach shape.Each piezoelectric vibrator 26, its anchor portion are bonded on the fixed head 42, and free end is more outstanding than the front end face of fixed head 42.That is, each piezoelectric vibrator 26 is installed on the fixed head 42 with the state of so-called cantilever beam.In addition, the fixed head 42 that supports each piezoelectric vibrator 26 for example is made of the stainless steel about thickness 1mm.Also have,, except described piezoelectric vibrator, also can use electrostatic actuator, magnetostriction element, heater element etc. as organization of stres.
If this record head 3 makes piezoelectric vibrator 26 flexible on the leement duration direction, then island portion 40 moves to the direction that is toward or away from balancing gate pit 35.Thus, the volume-variation of balancing gate pit 35 produces pressure oscillation in the ink of balancing gate pit 35.By this pressure oscillation, from nozzle opening 14 ejection ink droplets (drop a kind of).
Below, described print cartridge 7 and ink implanting needle 21 are described.Fig. 6 is the stereogram of the structure of explanation print cartridge, and Fig. 7 is the figure of the structure of explanation ink implanting needle, (a) is the vertical view of ink implanting needle, (b) is the cutaway view of pin length direction.
In the bottom surface sections of each print cartridge 7, as shown in Figure 6, the flow export that is set to the outlet of ink is the cushion inlet 44 that ink implanting needle 21 inserts.These cushion inlet 44 bottom surface sections from print cartridge 7 partly form as short cylinder shape laterally, at the promptly close front opening place of the inner peripheral surface of this cylindrical shape part, setting is sealed at the bonding a kind of sealing film 46 as containment member of front opening by the O shape ring 45 that the rubber elastomeric material constitutes.Sealing film 46 is to be used to prevent when print cartridge 7 does not use at the ink leakage of internal storage or the seal of evaporation, the for example preferred PP resin films such as (polypropylene) that uses thin (for example about 39 μ m of thickness) that can rupture, as hereinafter described, when the installation of print cartridge 7, under the effect of ink implanting needle 21, rupture.On the other hand, O shape ring 45 is after print cartridge 7 is installed, and is close to the close state of liquid on the outer peripheral face of straight portion 51 of ink implanting needle 21, and the ink leakages that are used to prevent to store in the print cartridge 7 are to outside encapsulant.Also have, the sealing material is not limited to O shape ring 45, if having sealing function, then can be structure arbitrarily.
As insert liquid in the described print cartridge 7 import column an example ink implanting needle 21 as shown in Figure 7, be to form the hollow needle that ink imports road 38 (liquid flow path a kind of) in inside, by having from front end to the base end side nadel portion 23 of the tapered portion 48 of hole enlargement gradually, with these nadel portion 23 continuous straight portion cylindraceous 51 that form, with from the lower end of this straight portion 51 to its downstream gradually the wide diameter portion 52 of the skirt shape that forms of the state of hole enlargement constitute, offer the ink introduction port 24 that is communicated with space outerpace and ink and imports road 38 (liquid entrance hole of the present invention a kind of) in the tapered portion 48 of described front.And ink implanting needle 21 for example is installed in (with reference to Fig. 3,4) on the implanting needle unit 15 by ultrasonic wave coating under the relative state of the lower ending opening that makes wide diameter portion 52 and filter 19.Thus, the stream 37 that the ink of ink implanting needle 21 imports road 38 and a box 16 sides is communicated with under the close state of liquid, and the area of the lower ending opening of wide diameter portion 52 becomes the area of the effective filtering surface that is configured in the filter 19 under it.Also have, this ink imports road 38 and a stream 37 is brought into play function as liquid flow path of the present invention.
Straight portion 51 is to insert the member of the hollow cylindrical in the described print cartridge 7, and the nadel portion 23 of cone shape staves sealing film 46 when the installation of print cartridge 7, inserts cushion inlet 44 easily.And, from the position of leaving these nadel portion 23 front ends, particularly from the position that the front end of nadel portion 23 tilts to descend a little, 4 slot parts 54 are set to the border of tapered portion 48 and straight portion 51.And, these slot parts 54 at the front end face of ink implanting needle 21 be tapered portion 48 outer surface week upwards uniformly-spaced and to be with the front end of nadel portion 23 that the center is configured to radial with 90 degree.That is, each slot part 54 is configured to crosswise with the front end of nadel portion 23 as the center with the different state of each 90 degree of phase place on the side face direction of the outer surface of tapered portion 48.In addition, if each slot part 54 of present embodiment with near the front end of nadel portion 23 as starting point, then on the outer surface of tapered portion 48, point-blank extend, under the state on the border that has connected tapered portion 48 and straight portion 51, form along the inclination of taper from this starting point.And in each slot part 54, described ink introduction port 24 wears with the state in the whole width upper shed of slot part 54.
Below, the installation of described print cartridge 7 on print cartridge installation portion 15 ' is described.To be the explanation print cartridge want portion's cutaway view to what ink implanting needle (print cartridge installation portion) go up to be installed to Fig. 8.
At the print cartridge installation portion 15 ' of present embodiment, shown in Fig. 3,4, the upwards upright ink implanting needle 21 of establishing.Therefore, with print cartridge 7 when print cartridge installation portion 15 ' is installed, shown in Fig. 8 (a), under the state of downside, the top of print cartridge 7 from print cartridge installation portion 15 ' is pressed into downwards at cushion inlet 44.Be pressed into by this, sealing film 46 deflections of cushion inlet 44 become outer surface with the front of ink implanting needle 21 and are the state that the outer surface of tapered portion 48 is close to.If from this state print cartridge 7 is pressed to a certain degree to ink implanting needle 21 sides, then shown in Fig. 8 (b), ink implanting needle 21 usefulness nadel portions 23 make sealing film 46 fractures.
Here, front end at the ink implanting needle 21 of present embodiment, as mentioned above, each slot part 54 forms from connecting the border of tapered portion 48 and straight portion 51 near the front end of nadel portion 23, so when print cartridge 7 is installed, even sealing film 46 deflections of cushion inlet 44, become the state of being close to the outer surface of the tapered portion 48 of ink implanting needle 21, shown in the arrow of Fig. 8 (a) and (b), can make also that compressed air flows out to the outside by the border side of each slot part 54 from tapered portion 48 and straight portion 51 between the outer surface of sealing film 46 and tapered portion 48.In addition, pressure rises even the air in the cushion of print cartridge 7 inlet 44 is owing to the bending of sealing film 46, and this air that boosts is discharged to the outside by described slot part 54.Therefore, when print cartridge 7 was installed, the air that can suppress to become bubble entered the inside of ink implanting needle 21.Therefore, compared with the past, can reduce the execution frequency of the cleaning action that the bubble that is used for flowing into (ink flow paths) in the ink implanting needle 21 discharges to the outside.Its result can reduce the consumption of the ink that is accompanied by cleaning action.
In addition, under the situation that nonrecoverable print cartridge 7 is installed once more, these cushion inlet 44 sealing films that stave 46 contact with tapered portion 48 or slide sometimes, and air is compressed between sealing film 46 and tapered portion 48 thus.At this moment, as mentioned above, compressed air is discharged to the outside by each slot part 54 between sealing film 46 and tapered portion 48, can prevent that this air from entering the inside of ink implanting needle 21 by ink introduction port 24.If be that the outer surface of tapered portion 48 is provided with slot part 54 at the front end face of ink implanting needle 21 like this, then the no matter use of print cartridge 7 and not using when the installation of print cartridge 7, can both suppress bubble and enter in the ink implanting needle 21.
If as mentioned above, when the installation of print cartridge 7, can suppress bubble and enter in the ink implanting needle 21, the generation of the unfavorable conditions such as undersupply of the damaged and ink of the pressure in the time of then reducing bubble and flow into caused ejection action in the ink flow path.In addition, even air enters ink implanting needle 21, also be micro-, so air in the ink of the degassing in advance, dissolve, so, can not become obstacle even carry out the cleaning action be used to discharge bubble hardly yet.
In addition, the ink introduction port 24 of present embodiment is located in each slot part 54, so when print cartridge 7 is installed, can directly not be close to sealing film 46.Therefore, when print cartridge 7 was installed, the air between the outer surface of sealing film 46 and tapered portion 48 was difficult for directly being pressed into ink introduction port 24, and this air is flowed out to the outside by the slot part 54 that is provided with this ink introduction port 24.Therefore, can further suppress this air enters in the ink implanting needle 21 from ink introduction port 24.
And, shown in Fig. 8 (c), if print cartridge 7 is pushed into the root of ink implanting needle 21, then ink implanting needle 21 becomes the state (installment state of print cartridge 7) of part insertion print cartridge 7 inside of this nadel portion 23 and straight portion 51, after straight portion 51 connects O shapes ring 45, press off the valve 56 that prevents ink leakage when the non-installation of print cartridge 7 with nadel portion 23.Thus, by ink introduction port 24, the inside of print cartridge 7 and ink import road 38 (ink flow path) and are communicated with, and ink imports to the balancing gate pit of record head 3 35 sides.
In addition, the present invention is not limited to described embodiment, according to the record of claims, can carry out various distortion.
In described embodiment, enumerated near the structure that forms each slot part 54 of ink implanting needle 21 from connecting the border of tapered portion 48 and straight portion 51 front end of nadel portion 23, but be not limited thereto, as shown in Figure 9, also can adopt from tapered portion 48 to straight portion the structure that forms each slot part 54 way of 51 outer peripheral face continuously.
If according to this structure, then when print cartridge 7 is installed, even the sealing film 46 of cushion inlet 44 is close to the outer peripheral face of straight portion 51 from the outer surface of the tapered portion 48 of ink implanting needle 21, also can make each slot part 54 of the outer peripheral face of air by extending to straight portion 51 between the outer surface of sealing film 46 and tapered portion 48 flow out to the outside reliably.Therefore, when the installation of print cartridge 7, the air that can further suppress between the outer surface of sealing film 46 and tapered portion 48 enters in the ink implanting needle 21 from ink introduction port 24.Also have, encircle more front end (tapered portion 48) side of the 45 O shape loop contacts districts 57 that contacted than O shape when each slot part 54 of the outer peripheral face of the straight portion 51 of present embodiment is formed on from tapered portion 48 sides installation print cartridge 7.This is because if these slot parts 54 extend to O shape loop contacts district 57, then when the installation of print cartridge 7, can't insert the needle in the mouth 44 is the close state of liquid, thereby produces ink leakage.
In addition, in described each embodiment, enumerate the structure of in slot part 54, having offered ink introduction port 24, but be not limited thereto, also can adopt the outer surface of the tapered portion 48 in leaving slot part 54 to offer the structure of ink introduction port 24.For example, shown in Figure 10 (a), also can offer ink introduction port 24 each other at each slot part 54.In addition, about nadel portion 23 and slot part 54, also be not limited to the structure of enumerating in described each embodiment, shown in Figure 10 (b), the front end that each slot part 54 also can form at ink implanting needle 21 is communicated with.Also can by combination they, shown in Figure 10 (c), be connected to form each slot part 54 at the front end of ink implanting needle 21, offer ink introduction port 24 each other at these slot parts 54.In addition, each slot part 54 forms from connecting the border of tapered portion 48 and straight portion 51 near the front end of nadel portion 23, but does not need certain perforation.When each slot part 54 does not connect described border, the compressed air between sealing film 46 and the tapered portion 48 is flowed out to the outside.In a word, if the present invention does not make the compressed air between sealing film 46 and the tapered portion 48 enter ink introduction port 24 when the installation of print cartridge 7, can make its outside that flows out to ink implanting needle 21 by slot part 54, then can suit to set the configuration of each slot part 54 or ink introduction port 24.In addition, the quantity of slot part 54 or ink introduction port 24 can be set too aptly.
(embodiment 2)
In embodiment 1, at ink implanting needle 21 slot part 54 is set, insert a needle into mouthful 44 interior air and discharge, but slot part is set, can insert a needle into mouthful 44 interior air more reliably and discharge to the outside by the sealing film 46 that inserts mouth 44 corresponding to needle seal to the outside.Below, the ink implanting needle of present embodiment is described.Also have, the part to identical with embodiment 1 marks identical symbol, and the repetitive description thereof will be omitted.
At first, print cartridge 7A is described.Figure 11 is the cutaway view of the cushion intake section of print cartridge, and Figure 12 is the stereogram of the valve body of print cartridge.
As shown in figure 11, the bottom surface sections at each print cartridge 7 is provided with the cushion inlet 44A (flow export of ink) that ink implanting needle 21A is inserted.Side relative with ink implanting needle 21A at cushion inlet 44A forms outside opening 64, forms inside opening 66 at its opposition side.By this inside opening 66, cushion inlet 44A is communicated with the ink storeroom (not shown) of the ink reservoir of print cartridge 7A.
Interior perimembranous at containment member 45 is formed with: extend to cone-shaped from outside opening 64 to the direction of inside opening 66, and first tapered portion 74 of direct ink implanting needle 21A and second tapered portion 76; The cylindraceous fitting portion 78 chimeric with ink implanting needle 21A.In addition, the inside opening 66 sides formation diameter pleat portion 82 littler than the external diameter of ink implanting needle at containment member 45 provides ink flow path.This pleat portion 82 expands out by the insertion of ink implanting needle 21A, and is thickly chimeric with liquid around the ink implanting needle 21A.
Form ink induction room 86 between containment member 45 in being fixed on cushion inlet 44A and the inside opening 66, accommodate valve body 60 here.This ink induction room 86 has the guide portion 88 of tubular, and described guide portion 88 engages with the part of valve body 60, can guide valve body 60 movably with respect to containment member 45 approximate vertical.On guide portion 88, form through hole.Valve body 60 is compressed spring 62 all the time to the containment member 45 side application of forces, seals the ink flow path of containment member 45 selectively.
Figure 12 represents an embodiment of valve body 60.Valve body 60 has: the valve body 90 that contacts with the surface elasticity of the ink storeroom side of containment member 45; Can be when valve body is accommodated in the ink induction room 86 with respect to the enter the mouth containment member 45 approximate vertical guiding elements 92 of pilot valve body 90 movably of 44A of cushion.Valve body 90 has: sealing is from the tabular sealing 94 of the ink of ink storeroom when valve body 90 and containment member 45 Elastic Contact; Keep so that the spring maintaining part 96 of the spring of the mode application of force of valve body 60 and containment member 45 Elastic Contact; The ink implanting needle 21A that valve body 90 is recorded device pushes and during with containment member 45 partition distance, the ink flow path 98 that the ink from the ink storeroom is passed through.Here, excise sealing 94 and form ink flow path 98.Guiding elements 92 has the axle 100 that is connected with described valve body 90, the portion of only pulling out 102 that is formed on this free end side of 100.Only pulling out portion 102 is the sizes that can move in the guide portion 88 of ink induction room 86, has the diameter bigger than through hole.
Get back to Figure 11, the portion of only pulling out 102 of valve body 60 engages with guide portion 88 in being arranged on ink induction room 86, can be with respect to containment member 45 approximate vertical pilot valve body 90 movably.
In addition, the record head 3 that is called so-called piezo-electric type mechanically enlarges pressure generating chamber by piezoelectric vibrator etc., to supply ink here, and compresses and makes the ink droplet ejection.In the print cartridge that in such record head 3, uses,, then can't fully pressurize, so when the manufacturing of ink, gas bubble is eliminated in ink to ink if in the pressure generating chamber of record head 3, produce bubble.
Therefore, at this moment, print cartridge in its manufacturing process, with the ink storeroom with respect to reduce pressure state injection way about negative 1 air pressure (6033kg/ square metre) of maximum of atmospheric pressure.Therefore, the elastic force pressure of spring 62 is set at, under the state that the ink storeroom is depressurized, also can keeps the state of valve body 60 and containment member 45 Elastic Contact.
Wideer at the inside opening 66 that the ink storeroom side of cushion inlet 44A forms than ink induction room 86 areas that contain valve body 60.Therefore, flow path resistance reduces, and can supply with the aqueous ink of q.s to ink implanting needle 21A.In addition, between this inside opening 66 and ink storeroom, filter 104 is set.Therefore,, also can remove, not offer record head 103 by filter 104 even dust etc. are sneaked in the ink of ink storeroom.Filter 104 is essentially identical size with inside opening 66, and flow path resistance reduces and be difficult for producing the advantage of stopping up so have.
Externally opening 64 adhering and sealings are as a kind of sealing film 46 of containment member.Sealing film 46 is not prevent at the ink leakage of internal storage or the seal of evaporation when the using of print cartridge 7, for example, what preferred use can be ruptured (for example approaches, the about 39 μ m of thickness) PP resin films such as (polypropylene), as described later, when the installation of print cartridge 7, under the effect of ink implanting needle 21A, rupture.Sealing film 46 forms in rolling direction Y (with reference to Figure 13 (a)) calendering, thus when relevant installation, easily along with the direction of rolling direction Y quadrature (below, be called " rift direction X " (with reference to Figure 13 (a)) fracture.That is, the shape of the fracture portion during sealing film 46 fracture is not circular, compares on rift direction X the shape of fracture more longways with rolling direction Y and become.Also have, sealing film 46 is not limited to calendering and forms, and the regulation direction of fracture easily gets final product.For example, also can use sealing film a direction half cut-off.
Below, ink implanting needle 21A is described.Figure 12 is the figure of the structure of explanation ink implanting needle, is the vertical view of the cushion inlet of print cartridge (a), (b) is the vertical view of ink implanting needle, (c) is the cutaway view of ink implanting needle length direction.An example that inserts the liquid importing column in the described print cartridge 7 is that ink implanting needle 21A is as Figure 13 (b) with (c), be to form the hollow needle that ink imports road 38 (liquid flow path a kind of) in inside, by having from front end to the base end side nadel portion 23 of the tapered portion 48 of hole enlargement gradually, with the continuous point-blank straight portion cylindraceous 51 that forms of this nadel portion 23, with with from the lower end of this straight portion 51 to its downstream gradually the skirt shape wide diameter portion 52 that forms of the state of hole enlargement constitute, wear the ink introduction port 24 that is communicated with space outerpace and ink and imports road 38 (liquid entrance hole of the present invention a kind of) in the tapered portion 48 of described front.And ink implanting needle 21A is installed in (with reference to Fig. 3,4) on the implanting needle unit 15 by ultrasonic wave coating under the relative state of the lower ending opening that makes wide diameter portion 52 and filter 19.Thus, the stream 37 that the ink of ink implanting needle 21A imports road 38 and a box 16 sides is communicated with under the close state of liquid, and the area of the lower ending opening of wide diameter portion 52 becomes the area of the effective filtering surface that is configured in the filter 19 under it.Also have, this ink imports road 38 and a stream 37 is brought into play function as liquid flow path of the present invention.
Below, the installation of described print cartridge 7 to print cartridge installation portion 15 ' is described.Figure 14 and Figure 15 are that the explanation print cartridge is to the cutaway view of ink implanting needle (print cartridge installation portion) installation with to view.
At the print cartridge installation portion 15 ' of present embodiment, shown in Fig. 3,4, the upwards upright ink implanting needle 21A that establishes.Therefore, with print cartridge 7A when print cartridge installation portion 15 ' is installed, shown in Figure 14 (a), under the state of downside, the top of print cartridge 7 from print cartridge installation portion 15 ' is pressed into downwards at cushion inlet 44A.Be pressed into by this, sealing film 46 deflections of cushion inlet 44A become outer surface with the front of ink implanting needle 21A and are the state that the outer surface of the tapered portion 48 of nadel portion 23 is close to.Figure 14 (b) is that the AA of Figure 14 (a) is to view.As shown in the figure, each its length direction of slot part 54A of ink implanting needle 21A is consistent with the rift direction X of sealing film 46.If from this state print cartridge 7A is pressed to a certain degree to ink implanting needle 21A side, then shown in Figure 14 (c), ink implanting needle 21A makes sealing film 46 fractures with nadel portion 23.At this moment, shown in Figure 14 (d), sealing film 46 ruptures along rift direction X under the effect of nadel portion 23.And from the opening of the part of the fracture of sealing film 46 (below, be called " 46a of fracture portion ") (below, be called " peristome 46b "), the part of each slot part 54A is in the face of peristome 46b.And, as Figure 15 (a) with (b), print cartridge 7 further being pressed into print cartridge installation portion 15 ', than wideer ground of calendering direction Y opening, the more part of each slot part 54A is in the face of peristome 46b on rift direction X for the 46a of fracture portion.
Here, front end at the ink implanting needle 21A of present embodiment, as mentioned above, each slot part 54A is from extending the edge portion of tapered portion 48 near the front end of nadel portion 23, even so when print cartridge 7A is installed, sealing film 46 deflections of cushion inlet 44A, become the state of outer surface of the tapered portion 48 of the nadel portion 23 that is close to ink implanting needle 21A, shown in the arrow of Figure 14 (a), the compressed air between the outer surface of sealing film 46 and tapered portion 48 is flowed out to the outside from the border side of tapered portion 48 and straight portion 51.In addition, shown in the arrow of Figure 14 (c), Figure 15 (a), even pressure rises the air in the cushion of the print cartridge 7A inlet 44A owing to the bending of sealing film 46, this air that boosts also can be discharged to the outside by described slot part 54A.Particularly, shown in Figure 14 (d) and Figure 15 (b), based on the fracture of the sealing film 46 of nadel portion 23 time, the state that the length that the 46a of fracture portion of sealing film 46 becomes rift direction X ruptures than the length of calendering direction Y widelyer.With respect to this, the length direction of each slot part 54A is consistent with rift direction X, so can guarantee the peristome 46b and the cushion inlet 44A interior part that be communicated with of each slot part 54A by the 46a of fracture portion significantly.Thus, the air in the cushion of the print cartridge 7A inlet 44A flows into each slot part 54A easily, can suppress the inside that air enters ink implanting needle 21A more reliably.
As mentioned above, enter to the inside of ink implanting needle 21A because suppress air, thus compared with the past, can reduce be used for will inflow ink implanting needle 21A in the bubble of (ink flow path) to the execution frequency of the cleaning action of outside discharge.Its result can reduce the consumption of the ink that is accompanied by cleaning action.
In addition, under the situation that nonrecoverable print cartridge 7 is installed once more, sometimes these cushion inlet 44 sealing films that stave 46 contact with tapered portion 48 or slide, air is compressed between sealing film 46 and tapered portion 48 thus, but at this moment as mentioned above, compressed air can be discharged to the outside by each slot part 54A between the outer surface of sealing film 46 and tapered portion 48, can prevent to enter by ink introduction port 24 inside of ink implanting needle 21.If the outer surface in the tapered portion 48 of the nadel portion 23 of ink implanting needle 21A is provided with slot part 54 like this, then the no matter use of print cartridge 7A and not using when the installation of print cartridge 7A, can both suppress bubble and enter in the ink implanting needle 21A.
As mentioned above, when the installation of print cartridge 7A, enter in the ink implanting needle 21A generation of the unfavorable conditions such as undersupply of the damaged or ink of the pressure in the time of then reducing bubble and flow into caused ejection action in the ink flow path if can suppress bubble.In addition, even air enters ink implanting needle 21A, also be micro-, so air in the ink of the degassing in advance, dissolve, so, can not become obstacle even carry out the cleaning action be used to discharge bubble hardly yet.
In addition, the ink introduction port 24 of present embodiment is located in each slot part 54A, so when print cartridge 7A is installed, can directly not be close to sealing film 46.Therefore, can reduce when print cartridge 7A is installed, the air between the outer surface of sealing film 46 and tapered portion 48 directly is pressed into the possibility of ink introduction port 24, and this air is flowed out to the outside by the slot part 54A that is equipped with this ink introduction port 24.Therefore, can further suppress this air enters in the ink implanting needle 21A from ink introduction port 24.
And, as Figure 15 (c) with (d), if print cartridge 7A is pushed into the root of ink implanting needle 21A, then become ink implanting needle 21A broken seal film 46, and the part of this nadel portion 23 and straight portion 51 is inserted the state (installment state of print cartridge 7A) of the inside of print cartridge 7A, straight portion 51 is chimeric with the fitting portion 78 of containment member 45, and after the pleat portion 82 of nadel portion 23 perforation containment members 45, presses off valve body 60.Thus, by ink introduction port 24, the ink storeroom of print cartridge 7A and ink import road 38 (ink flow path) and are communicated with, and ink imports to the balancing gate pit of record head 3 35 sides.
Described ink implanting needle 21A with each slot part 54A from extending the edge portion of tapered portion 48 near the front end of nadel portion 23, but be not limited thereto, as shown in figure 16, also can adopt each slot part 54B is extended structure in the way of outer peripheral face of straight portion 51 continuously.
According to this structure, when print cartridge 7A is installed, as shown in figure 17, even the sealing film 46 of cushion inlet 44A stride the whole and straight portion 51 of the outer surface of tapered portion 48 of ink implanting needle 21B outer peripheral face top and be close to, also can make each slot part 54B of the outer peripheral face of air by extending straight portion 51 between the outer surface of sealing film 46 and tapered portion 48 flow out to the outside reliably.Therefore, when the installation of print cartridge 7, the air that can further suppress between the outer surface of sealing film 46 and tapered portion 48 enters in the ink implanting needle 21B from ink introduction port 24.
Also have, the zone that contacts with straight portion 51 than containment member 45 when each slot part 54B of the outer peripheral face of the straight portion 51 of described ink implanting needle 21B is formed on installation print cartridge 7 is front end (tapered portion 48) side more.This is because if these slot parts 54B extends this zone, then when the installation of print cartridge 7A, can't insert the needle in mouthful 44A is the close state of liquid, produces ink leakage.
In addition, in the present embodiment,, be provided with along the rift direction X of sealing film 46 and add up to 2 slot part 54A, at ink implanting needle 21B, be provided with along the rift direction X of sealing film 46 and add up to 2 slot part 54B, but be not limited thereto at ink implanting needle 21A.For example shown in Figure 18 (a)～(c), also can add up to 4 slot part 54A week of the outer surface of the tapered portion 48 of ink implanting needle 21A upwards uniformly-spaced and be configured to radial as the center front end of nadel portion 23 with 90 degree.About ink implanting needle 21B, also can dispose 4 slot part 54B of total equally.Slot part 54A, 54B at least are provided with one along the mode of rift direction X at the front end face of ink implanting needle 21A with its length direction and get final product.By each slot part 54A, 54B are set like this, the air that can suppress more reliably between the outer surface of sealing film 46 and tapered portion 48 is invaded in ink implanting needle 21A, the 21B from ink introduction port 24.
In addition, enumerate the structure that in slot part 54A, 54B, wears ink introduction port 24, but be not limited thereto, also can adopt the outer surface of the tapered portion 48 in leaving slot part 54A, 54B to wear the structure of ink introduction port 24.For example, shown in Figure 18 (a), also can wear ink introduction port 24 each other at each slot part 54A or slot part 54B.In addition, about nadel portion 23 and slot part 54A, 54B, also be not limited to the structure of enumerating in described each embodiment, shown in Figure 18 (b), the front end that each slot part 54A can form at ink implanting needle 21A is communicated with.Equally, each slot part 54B can form the front end connection at ink implanting needle 21B.Also can by combination they, shown in Figure 18 (c), form each slot part 54A communicatively at the front end of ink implanting needle 21A, 54A wears ink introduction port 24 each other at these slot parts.Equally, also can form each slot part 54B at the front end of ink implanting needle 21B communicatively, 54B wears ink introduction port 24 each other at these slot parts.In addition, each slot part 54A, 54B form from connecting the border of tapered portion 48 and straight portion 51 near the front end of nadel portion 23, but do not need certain perforation.When each slot part 54A, 54B do not connect described border, the compressed air between sealing film 46 and the tapered portion 48 is flowed out to the outside.In a word, if the present invention does not make the compressed air between sealing film 46 and the tapered portion 48 enter ink introduction port 24 when the installation of print cartridge 7A, can flow out to the outside of ink implanting needle 21A, 21B by slot part 54A, 54B, and slot part 54A, 54B extend along the rift direction X of the sealing film 46 of print cartridge 7A, then can suit to set the configuration of each slot part 54A, 54B or ink introduction port 24.In addition, the quantity of slot part 54A, 54B or ink introduction port 24 can be set too aptly.
(embodiment 3)
In embodiment 1 and embodiment 2, illustrated as liquid to import column that front end is ink implanting needle 21,21A, the 21B of cone-shaped, still, is not limited to such shape.Liquid imports the sealing film 46 that column can be fracture print cartridge 7,7A, and inserts cushion inlet 44, the ink in print cartridge 7, the 7A can be imported the shape that road 38 imports to ink.For example, the outstanding jut to the cushion inlet 44A of print cartridge 7,7A also can be set.Figure 19 (a) is the vertical view of the cushion inlet of print cartridge, and Figure 19 (b) is the vertical view of ink implanting needle, and Figure 19 (c) is the XX line cutaway view of Figure 19 (b), and Figure 19 (d) is the YY line cutaway view of Figure 19 (b).Below, to the part mark identical symbol identical with the inkjet recording device of embodiment 1 and embodiment 2, the repetitive description thereof will be omitted.
As shown in the figure, the front end face at ink implanting needle 21C forms the side-prominent jut 23A to the cushion inlet 44A of print cartridge 7A.Shown in Figure 19 (b), the length direction of jut 23A intersects with the rift direction X of sealing film 46.Particularly, jut 23A the rift direction X of the sealing film 46 of print cartridge 7A (Figure 19 (b) and (c) in, left and right directions) go up to have the inclined plane shown in Figure 19 (c), described inclined plane is with from tilting to the mode of central elevation with the continuous shoulder 21a of the base end side of the jut 23A of ink implanting needle 21.On the other hand, with the rolling direction Y of described rift direction X quadrature (in Figure 19 (b), above-below direction, left and right directions in figure (d)) on, shown in Figure 19 (d), have with from the end of ink implanting needle 21C to the inclined plane that the mode of central elevation tilts.That is, jut 23A becomes width narrow shape, its length direction and the rift direction X quadrature of the width of rift direction X than calendering direction Y.
Below, the installation of described print cartridge 7A to print cartridge installation portion 15 ' is described.Figure 20 (a), (c), Figure 21 (a), (c) are the cutaway views that the explanation print cartridge is installed to ink implanting needle (print cartridge installation portion), and Figure 20 (b), (d), Figure 21 (b), (d) are the AA alignment views corresponding with these cutaway views.
When print cartridge 7 being installed to print cartridge installation portion 15 ',,, print cartridge 7A is pressed into downwards from the top of print cartridge installation portion 15 ' inserting a needle into mouthfuls 44 under the state of downside as Figure 20 (a) with (b).At this moment, the rift direction X quadrature of the length direction of the jut 23A of ink implanting needle 21C and sealing film 46.Be pressed into by this, sealing film 46 deflections of cushion inlet 44A become the state of being close to the leading section surface of jut 23A.On the other hand, sealing film 46 is not close to respect to shoulder 21a and the straight portion 51 of ink implanting needle 21C, therefore, forms between the shoulder 21a of ink implanting needle 21C and sealing film 46 and opens space 110.
If print cartridge 7 is pressed to a certain degree to ink implanting needle 21 sides from this state, then as Figure 20 (c) with (d), ink implanting needle 21C jut 23A broken seal film 46.At this moment, sealing film 46 ruptures at the effect lower edge of jut 23A rift direction X.The peristome 46b of the i.e. fracture of the part of the fracture of sealing film 46 46a of portion wide on the rift direction X, on rolling direction Y narrow ground opening.Then, as Figure 21 (a) with (b), if print cartridge 7A further is pressed into print cartridge installation portion 15 ', the 46a of fracture portion wideer ground opening on rift direction X then.
At last, as Figure 21 (c) with (d), if print cartridge 7A is pressed into the root of ink implanting needle 21C, then ink implanting needle 21C becomes the state (installment state of print cartridge 7A) of the part insertion print cartridge 7A inside that makes sealing film 46 fractures and its jut 23A and straight portion 51, straight portion 51 is chimeric with the fitting portion 78 of containment member 45, and jut 23A presses off valve body 60 after connecting the pleat portion 82 of containment member 45.Thus, by ink introduction port 24, the inside of print cartridge 7A and ink import road 38 (ink flow path) and are communicated with, and ink imports to the balancing gate pit of record head 3 35 sides.
Here, even when print cartridge 7A is installed, sealing film 46 deflections of cushion inlet 44A, become the lip-deep state of leading section of the jut 23A that is close to ink implanting needle 21C, owing between the shoulder 21a of sealing film 46 and ink implanting needle 21C, be formed with out space 110, so shown in the arrow of Figure 20 (a), compressed air can not enter in the ink implanting needle 21 by ink introduction port 24 yet between the outer surface of sealing film 46 and shoulder 21a, to the outside that sealing film 46 is not close to, particularly flow out to the outside from the circumference of shoulder 21a and the border side of straight portion 51.
In addition, shown in Figure 20 (d) and Figure 21 (b), in fracture based on the sealing film 46 of jut 23A, the state that the length that the 46a of fracture portion of sealing film 46 becomes rift direction X ruptures than the length of calendering direction Y widelyer.With respect to this, the length direction of jut 23A and rift direction X quadrature be not so peristome 46b can be stopped up by jut 23A.Therefore, the cushion of print cartridge 7 inlet 44A inside by this peristome 46b with open space 110 and be communicated with.Its result, shown in the arrow of Figure 20 (c) and 21 (a), peristome 46b and open space 110 and become and insert a needle into the stream that mouthful air of 44A inside is discharged to the outside.Especially in the present embodiment, the length direction of jut 23A and rift direction X quadrature, so when the fracture of sealing film 46, can guarantee the aperture area of peristome 46b the widelyest, the air that can insert a needle into mouthful 44A inside is the most efficiently discharged.
Therefore, though the air in the cushion of the print cartridge 7A inlet 44A because the bending of sealing film 46 and pressure rises, this air that boosts is also by peristome 46b with open space 110 and discharge to the outside.Therefore, when print cartridge 7A was installed, the air that can suppress to become bubble entered the inside of ink implanting needle 21C.And, compared with the past, can reduce the execution frequency of the cleaning action that the bubble that is used for flowing into (ink flow path) in the ink implanting needle 21C discharges to the outside.Its result can reduce the consumption of the ink that is accompanied by cleaning action.
(other embodiments)
In addition, liquid importing column of the present invention each embodiment as described is such, and the front end of ink implanting needle 21,21A, 21B is a nadel portion 23, and perhaps the front end of ink implanting needle 21C is jut 23B, all be to come to a point, but be not limited to such shape towards print cartridge 7,7A side.For example, the ink implanting needle also can form plane that front end contacts with the sealed thin face, at this plane fore-end slot part is set.By the planar portions at the front end of ink implanting needle like this slot part is set, thus when the ink implanting needle makes the sealing film fracture of print cartridge, compressed air is discharged by this slot part to the outside of ink implanting needle.Slot part also can extend the edge portion of planar portions of the front end of ink implanting needle.In addition, slot part also can be arranged on along the rift direction of sealing film on the ink implanting needle.
When being installed to the ink implanting needle of such structure on the print cartridge, even sealing film and planar portions are close to, can make also that compressed air does not enter in the ink implanting needle by ink introduction port between sealing film and the planar portions, and it is flowed out to the outside by slot part.In addition, this slot part also can extend straight portion continuously from planar portions.Thus, though sealing film stride the whole and straight portion of the planar portions of ink implanting needle outer peripheral face top and be close to, the slot part of the outer peripheral face of air by extending straight portion between sealing film and the planar portions is flowed out to the outside reliably.
In addition, even have the ink implanting needle of such planar portions, also can be same with the front end of ink implanting needle shown in Figure 10, also be arranged on the upwardly extending slot part in side (being equivalent to Figure 10 (a)) with the rift direction quadrature of sealing film, a plurality of slot parts also can be communicated with (being equivalent to Figure 10 (b), (c)) near the center of planar portions.In addition, ink introduction port and ink implanting needle shown in Figure 10 are same, also can not wear in planar portions (being equivalent to Figure 10 (a), (c)) at slot part, also are provided with in the slot part that can be provided with on the outer peripheral face of straight portion or straight portion.
The present invention is not limited to each embodiment as described and like that print cartridge 7,7A is installed to type on the balladeur train on the balladeur train 4, also can go up and adopt in record head 3 sides are supplied with the disengaging balladeur train type of ink by ink supply conduit the cartridge carrier that print cartridge 7,7A is installed to the basket side of printer 1 (liquid is stored a kind of of member installation portion).That is, the ink implanting needle of installing on the cartridge carrier that breaks away from the balladeur train type also can be used the structure of described each embodiment.
More than be that printer 1 is that example is illustrated with a kind of of liquid injection apparatus, but the present invention also can use in having other liquid injection apparatus of liquid implanting needle.For example, at the chip manufacturing device of the display manufacturing apparatus of the colour filter of making LCD etc., the electrode manufacturing apparatus that forms the electrode of organic EL (Electro Luminescence) display or FED (field-emitter display) etc., manufacturing biochip (biochemical element), correctly supply with in little pipette of sample solution of minute quantity and also can use.
Claims (8)
1. liquid injection apparatus, it comprises:
Liquid is stored member, and it is at internal storage liquid and have the flow export of the outlet that becomes this liquid;
Liquid is stored the member installation portion, and it can be installed this liquid with loading and unloading and store member;
Liquid imports column, and the liquid of under its state in the flow export that inserts the described liquid storage member of being installed this liquid being stored in member imports in the liquid flow path of inside from the liquid entrance hole;
Jet head liquid, it can import the liquid that column imports from the nozzle opening ejection from this liquid by the work of organization of stres,
Described liquid injection apparatus is characterised in that,
Described liquid imports column by constituting in the face of the front end face of described flow export with straight portion that this front end face forms continuously,
The front end face that imports column at described liquid is provided with slot part.
2. liquid injection apparatus according to claim 1 is characterized in that,
The border that connects described front end face and described straight portion forms described slot part.
3. liquid injection apparatus according to claim 1 is characterized in that,
Described slot part extends the way of described straight portion continuously from described front end face.
4. according to any described liquid injection apparatus in the claim 1～3, it is characterized in that,
Wear described liquid entrance hole with state to described slot part inner opening.
5. according to any described liquid injection apparatus in the claim 1～3, it is characterized in that,
Described liquid imports column and possesses nadel portion, and described nadel portion has from front end to the base end side tapered portion of hole enlargement gradually,
Described front end face is the taper surface of described nadel portion.
6. according to any described liquid injection apparatus in the claim 1～3, it is characterized in that,
Described liquid is stored the described flow export of member by the containment member sealing along a direction fracture,
Described liquid imports the direction formation of the described slot part of column along described containment member fracture.
7. liquid injection apparatus, it comprises:
Liquid is stored member, and it is at internal storage liquid and have the flow export of the outlet that becomes this liquid;
Liquid is stored the member installation portion, and it can be installed this liquid with loading and unloading and store member;
Liquid imports column, and the liquid of under its state in the flow export that inserts the described liquid storage member of being installed this liquid being stored in member imports in the liquid flow path of inside from the liquid entrance hole;
Jet head liquid, it can import the liquid that column imports from the nozzle opening ejection from this liquid by the work of organization of stres,
Described liquid injection apparatus is characterised in that,
Described liquid is stored the described flow export of member by the containment member sealing along a direction fracture,
The front end face in the face of described containment member that imports column at described liquid forms jut,
The length direction of described jut constitutes with the direction of described containment member fracture and intersects.
8. liquid injection apparatus according to claim 7 is characterized in that,
Described liquid imports column and has the continuous shoulder of base end side with described nadel portion,
Described liquid entrance hole is located on the described shoulder.
Applications Claiming Priority (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2006316095A JP4389926B2 (en) | 2006-11-22 | 2006-11-22 | Liquid ejector |
| JP2006316095 | 2006-11-22 | ||
| JP2006-316095 | 2006-11-22 | ||
| JP2007009582 | 2007-01-18 | ||
| JP2007-009582 | 2007-01-18 | ||
| JP2007009582A JP5003872B2 (en) | 2007-01-18 | 2007-01-18 | Liquid ejector |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101186150A true CN101186150A (en) | 2008-05-28 |
| CN101186150B CN101186150B (en) | 2010-07-21 |
Family
ID=39478859
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2007101886467A Active CN101186150B (en) | 2006-11-22 | 2007-11-21 | Liquid-jet apparatus |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP4389926B2 (en) |
| CN (1) | CN101186150B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105437774A (en) * | 2014-09-24 | 2016-03-30 | 精工爱普生株式会社 | Liquid supply unit |
| CN108528052A (en) * | 2017-03-02 | 2018-09-14 | 精工爱普生株式会社 | Ink feed container |
| CN113352758A (en) * | 2021-05-28 | 2021-09-07 | 杭州电子科技大学 | High-speed printer ink-jet head based on magnetostrictive effect and preparation method thereof |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2430629C (en) * | 1998-11-11 | 2007-01-02 | Seiko Epson Corporation | Ink-jet printing apparatus and ink cartridge |
| JP2001199082A (en) * | 1999-10-08 | 2001-07-24 | Seiko Epson Corp | Ink cartridge, ink jet recording apparatus and method for fitting ink cartridge |
-
2006
- 2006-11-22 JP JP2006316095A patent/JP4389926B2/en not_active Expired - Fee Related
-
2007
- 2007-11-21 CN CN2007101886467A patent/CN101186150B/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105437774A (en) * | 2014-09-24 | 2016-03-30 | 精工爱普生株式会社 | Liquid supply unit |
| CN108528052A (en) * | 2017-03-02 | 2018-09-14 | 精工爱普生株式会社 | Ink feed container |
| CN113352758A (en) * | 2021-05-28 | 2021-09-07 | 杭州电子科技大学 | High-speed printer ink-jet head based on magnetostrictive effect and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101186150B (en) | 2010-07-21 |
| JP4389926B2 (en) | 2009-12-24 |
| JP2008126591A (en) | 2008-06-05 |
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