CN2741774Y

CN2741774Y - Constant pressure ink box

Info

Publication number: CN2741774Y
Application number: CNU2004200895916U
Authority: CN
Inventors: 萧庆国; 金本友
Original assignee: Print Rite Unicorn Image Products Co Ltd
Current assignee: Print Rite Unicorn Image Products Co Ltd
Priority date: 2004-08-10
Filing date: 2004-08-10
Publication date: 2005-11-23
Anticipated expiration: 2014-08-10
Also published as: WO2006015535A1; HK1074970A2

Abstract

Disclosed is an ink box, relating to an ink feeding device matched with an ink-jet printer, in particular to a constant pressure ink box provided with an automatic constant pressure ink feeding structure. The utility model adopts a sealed box body containing ink, and one side wall of the box body is provided with an ink feeding opening for transporting the ink to a print head after the constant pressure ink box installed. The side wall where the ink feeding opening is arranged is provided with a pin hole in which a locating pin is inserted in the time of the constant pressure ink box installed. A bulkhead which separates an ink cavity to a first ink cavity and a second ink cavity is arranged in the box body, and the first ink cavity is communicated with the second ink cavity through a hole arranged on the lower part of the bulkhead. The top of the first ink cavity is provided with an open air duct valve which is opened and is communicated with the outside in the time of the locating pin inserted. The utility model is of simple structure, is of constant pressure ink feeding and is of no ink leakage after the ink box dismounted.

Description

Constant pressure ink cartridge

Technical field

The utility model relates to and the matching used ink-feeding device of ink-jet printer, particularly a kind of constant pressure ink cartridge with automatic constant-pressure supplying structure of ink.

Background technology

CN1358137A Chinese invention patent application specification discloses a kind of one side at the print cartridge shell and has been provided with the positioner of using when being filled on the printer, positioner comprises the pin-and-hole that is arranged on the shell one side, when it is used to install and alignment pin cooperate, print cartridge is located, guarantee that ink supply port and printer are stable to dock.This print cartridge has an airtight box body, a built-in flexible pouch of holding China ink can enter printer for making black liquid, and an air flue that air pressure is provided in box body and between the bag must be arranged, reach black liquid to the required height of printhead with gas extruded ink bag, realize the ink supply of relative printhead constant voltage.The structure more complicated of this print cartridge, processing cost are also than higher.

In addition, do not use other print cartridges of pocket type print cartridge structure that a make-up gas in black chamber is arranged usually, to reduce the air flue of negative pressure in the chamber, the gas port of existing this class print cartridge is sealed by a pad pasting before transportation and first the use, tear during use, when black liquid to the greatest extent takes off print cartridge midway or uses up when taking off, often there is black liquid to spill from ink supply port, reason is that air flue can't seal once more.

Summary of the invention

The purpose of this utility model be a kind of simple in structure, relative printhead height of box body height of design fixing after, can be by the constant pressure ink cartridge of this body structure of print cartridge assurance with substantially invariable pressure ink supply;

Another purpose of the present utility model is that air flue was opened the constant pressure ink cartridge that air flue can be closed voluntarily when printer takes off voluntarily after a kind of installation of design put in place.

For achieving the above object, the constant pressure ink cartridge that the utility model provides adopts a box body that holds black liquid and sealing, there is the installation back to export the ink supply port of black liquid to printhead on the sidewall of box body, alignment pin inserts the pin-and-hole of usefulness when also being useful on the constant pressure ink cartridge installation on the sidewall of ink supply port place, it is the next door in first chamber and second chamber that the black chamber of one separation is arranged in the box body, first chamber is communicated with by the hole that is located at this bottom, next door with second chamber, and the top in first chamber is provided with the airway valve in the connection external world of opening when alignment pin inserts.

By above scheme as seen, with respect to the pocket type print cartridge, the utility model has saved flexible pouch, structure is greatly simplified, the China ink chamber is separated into first chamber and second chamber and next door bottom and is communicated with by a hole, can realize satisfying the constant voltage of ink supply requirement, and its constant voltage ink supply principle will be described with reference to the accompanying drawings.Simultaneously, be provided with an airway valve that is positioned at first top of chamber, this valve is only opened by the alignment pin on the printer when installation, being used for first chamber is in communication with the outside, make the black chamber of the black liquid of continuous consumption obtain gas make-up, print cartridge can be closed when printer takes off automatically, the print cartridge ink leak after effectively preventing to take off.

Description of drawings

Fig. 1 structure principle chart of the present utility model;

The structure chart of Fig. 2 most preferred embodiment;

Fig. 3 is the left view of Fig. 2;

Fig. 4 is the A-A echelon sectional view of Fig. 3;

Fig. 5 is the C-C cutaway view of Fig. 4;

Fig. 6 is the D partial enlarged drawing of Fig. 5;

Fig. 7 is the B-B echelon sectional view of Fig. 3;

Fig. 8 is the E partial enlarged drawing of Fig. 7;

Fig. 9 is the rearview of Fig. 2;

Figure 10 is the STRUCTURE DECOMPOSITION figure of Fig. 2;

Figure 11 is the STRUCTURE DECOMPOSITION figure of Fig. 9.

The utility model is described in further detail below in conjunction with each figure and most preferred embodiment.

Embodiment

Referring to Fig. 1, Fig. 1 is close to the configuration diagram that a sidewall is cut open, box body 4 is a rectangle at this section substantially, in a black chamber that is separated into the sealing in first chamber 11 and second chamber 5 by next door 10 is arranged, two coffins the 3, the 9th, the space that supplies the printer alignment pin to insert from left to right that is in communication with the outside, promptly space 3,9 is not the part in black chamber.Sidewall is provided with an ink supply port 12, the inlet 7 of China ink pipe 6 is located at the lowest part in second chamber 5, be provided with an airway valve 2 at the top in first chamber 11, print cartridge is packed into behind the printer, alignment pin penetrates from pin-and-hole 1, and airway valve 2 is opened, and gas can enter first chamber 11 through airway valve 2, pore 13 is air passing holes of spring cavity, and hole 8 is the gas-liquid exchange holes in 5 in first chamber 11 and second chamber.When print cartridge was packed printer into, the black liquid in the black chamber had the following liquid level in 11 tops, first chamber, as the liquid level in second chamber 5 among Fig. 1.In print procedure, consumption with inking liquid, at first be the liquid level decline in first chamber 11, second chamber 5 keeps liquid level constant owing to air can't enter, when the liquid level in first chamber 11 drops to the state that Fig. 1 shows, air 8 enters second chamber 5 from the hole, simultaneously, black liquid in second chamber 5 is also owing to air is mended into flowing to first chamber 11, and promptly the liquid level in first chamber can rise on the hole 8, makes the gas-liquid exchange process that occurs in 8 places, hole stop, so repeatedly, promptly begin printhead is carried out the constant voltage ink supply, the ink supply pressure of relative printhead will remain near the head height the hole 8, when the black liquid in second chamber 5 drops under the hole 8, constant voltage ink supply process finishes, remaining black liquid 7 is positioned at the lowest part that black chamber also is second chamber because of entering the mouth, as long as print cartridge is shelved in the printhead suction scope, still residual China ink can be exhausted.

Below provide a most preferred embodiment of the present utility model, identical label has identical implication in institute's drawings attached (comprising Fig. 1).

Referring to Fig. 2, consider from technology, a sidewall design of box body 4 is become lid, Fig. 2 is the structure chart of the state of uncapping, be provided with some reinforcements 15 in the box body 4, to improve structural strength, a sidewall rear end also is provided with the hand-held position 16 of indent, two sidewall outer surfaces up and down of box body 4 also are provided with several projections that cooperates with printer 14, and it is in place and prevent that the print cartridge of different colours from being usurped dress to be used for Convenient ink box.

Referring to Fig. 3, there is ink supply port 12 at this sidewall of print cartridge middle part, ink supply port 12 a pin-and-hole 1 respectively arranged up and down, cooperate with two alignment pins on the printer respectively to position, guarantee that printhead docks with ink supply port 12.

Referring to Fig. 4, the black liquid in the black chamber enters from the inlet 7 that is positioned at the bottom, chamber, is sent to printhead through China ink pipe 6 from ink supply port 12.

Referring to Fig. 5, Fig. 6, consider that based on manufacturability this example China ink pipe 6 is molded on the sidewall of print cartridge, 7 lower ends at China ink pipe 6 that enter the mouth laterally are positioned at black chamber.

Referring to Fig. 7, there is a next door 10 in first chamber 11 and 5 in second chamber that constitute black chamber, and next door 10 also forms a spring base at the top in first chamber 11, is used to support airway valve 2.

Referring to Fig. 8, airway valve 2 is made of spool 21, sealing ring 22 and spring 23 and spring base, spool 21 has a valve rod that upper end diameter is little, lower end diameter is big and is positioned at the bonnet formation of lower end, valve rod cooperates with the taper hole on spring base top, sealing ring 22 is positioned between bonnet and taper hole lower surface, valve stem tip is positioned on the trajectory of the relative print cartridge insertion of alignment pin, therefore, it is descending to oppress spool 21 when alignment pin inserts, promptly open airway valve 2, when alignment pin withdraws from, up at the effect bottom spool 21 of spring 23, close airway valve 2.

Referring to Fig. 9, based on the reason of manufacturability consideration, China ink pipe 6 is molded on this sidewall of print cartridge as described above, and it has a shrouding 62.

Referring to Figure 10, dock hermetically with printhead for guaranteeing ink supply port 12, ink supply port built-in a sealing ring 17, when printhead blotting pin penetrates into, constitute an inking channel that seals to external world.Also be provided with two pin-and-holes 1 on the ink supply port 12 place sidewalls, be used to guarantee the accurate location of ink supply port 12, simultaneously, the pin-and-hole 1 on top also has the effect of compressing airway valve spool 21 when introducing alignment pin.

Referring to Figure 11, China ink pipe 6 is made of the groove 61, envelope film 63 and the shrouding that are molded on the sidewall.

Technical conceive of the present utility model is not limited in the foregoing description, can also obtain many different concrete schemes according to design of the present utility model, for example, can with airway valve 2 by last example perpendicular put change into horizontal, make the axis and the alignment pin coaxial line of spool 21, thereby reduce lateral stressed in the ink supply port docking operation.

Claims

1, constant pressure ink cartridge comprises

A box body that holds black liquid and sealing;

A sidewall of box body is provided with ink supply port from the installation to printhead that can export black liquid after;

Alignment pin inserts the pin-and-hole of usefulness when also being useful on the constant pressure ink cartridge installation on the sidewall of ink supply port place;

It is the next door in first chamber and second chamber that the black chamber of one separation is arranged in the box body, and first chamber is communicated with by the hole that is located at this bottom, next door with second chamber;

It is characterized in that:

The top in first chamber is provided with the airway valve in the connection external world of opening when alignment pin inserts.

2, constant pressure ink cartridge according to claim 1 is characterized in that:

The lowest part in described second chamber is provided with the black tube inlet that leads to described ink supply port.

3, constant pressure ink cartridge according to claim 1 and 2 is characterized in that:

Described air flue switch by a spring with the spool roof pressure on described box body valve opening and constitute;

Spool has the extension that stretches out described first chamber by valve opening, and on the trajectory of this extension when being in the relative print cartridge of described alignment pin and inserting.

4, constant pressure ink cartridge according to claim 3 is characterized in that:

Also be provided with a sealing ring between the sealing surface of described spool and described valve opening.

5, constant pressure ink cartridge according to claim 4 is characterized in that:

Be provided with the sealing device that docks with the printhead sealing in the described ink supply port.