JP2002326756A - Image reading device, and image reading and recording device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent collision of a tip of a document stacking tray with recording paper on an automatic sheet feeder to damage it when a printer cover is opened in a BJ facsimile in which the printer cover also works as a document base with the document stacking tray installed on the printer cover. SOLUTION: The document stacking tray is installed on an upper cover under the printer cover, and a hole is opened in the printer cover, thereby move of the document stacking tray as the printer cover is opened and closed is eliminated.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to mounting a tray for a printer, a facsimile or the like.

[0002]

2. Description of the Related Art Conventionally, a multifunction device having a recording means and an image reading means has a structure as shown in FIG. FIG.
1 is a perspective view of a first conventional example, and FIG. 22 is a partial sectional view of the first conventional example. In the figure, the lower cover 502 also serves as a chassis, and has a reading unit 505, a printer unit 504, and an electrical unit 506 attached thereto. The upper cover 501 has a hinge receiving portion 501b that receives the hinge 503b of the printer cover 503, and can be opened and closed around the hinge portion as shown by the arrow.

[0003] An upper cover 501 is attached to the lower cover, and there are four upper cover claws 501a and four lower cover claws 502a, which are joined by being fitted in the direction of arrow B (vertical direction). . An original stacking tray 510, which is a part of the original table, is inserted into the insertion opening of the printer cover 503 to support the original when reading the original.

In FIG. 22, there is a gap h in the upper cover 501, and when the tool 507 is inserted, the lower cover claw 502a bends in the direction of arrow A, disengaging from the upper cover claw 501a. The upper cover 501 can be removed.

FIG. 23 is a partial cross-sectional view, in which a recording paper tray 511 and a recording paper auxiliary tray 512 are located at the back, and a recording paper 513 is set. FIG. 24 is a diagram when the printer cover 503 is opened for cartridge replacement.

[0006]

When the tray is mounted as in the conventional example, there are the following problems. 1. When the printer cover is opened, the original loading tray 51
0 may hit the recording paper 513 and damage the recording paper. 2. In order to prevent the problem 1, when the document stacking tray is shortened, the rear end of the document hangs down to the back side, and the document may not be satisfactorily conveyed. 3. In order to prevent the problem 1, if the document stacking tray is set up nearly vertically, the rear end of the document may fall forward.

[0007]

A representative means according to the present invention for solving the above problems is to attach a tray to a cover below a printer cover, make a hole in the printer cover, and attach the tray to the outside. It is to put out.

[0008] By the above means, the printer cover can be opened without the leading end of the document stacking tray coming into contact with the recording paper.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described below with reference to the accompanying drawings.

First, FIG. 1 is an external perspective view when a reading and recording apparatus is configured as a facsimile apparatus. In addition to the configuration as a facsimile apparatus as described above, for example, a document reading apparatus and a recording apparatus that perform an operation of reading an image of a sheet document by connecting to a personal computer and individually or simultaneously perform recording on a recording sheet are simply illustrated. It is designed on the assumption that it is also configured as a so-called peripheral device reading / recording device that is united. For this purpose, as will be described later, the components such as a recording device, a reading device, a control circuit board, and a power supply are individually configured so that they can be easily replaced and detached.

In particular, it is assumed that the housing is formed integrally with an injection resin molding die using a predetermined resin material such as high impact polystyrene resin or ABS resin. Since including a set is a considerable initial investment, the final shape is determined after its shape and usage are sufficiently examined. Further, in the manufacturing process of the device, it is possible to minimize the fixing by the frequently used screw screw,
Since it greatly contributes to the reduction of the manufacturing cost, it is considered that no screw is used except for the electric ground in principle.

Now, an outline of the apparatus will be described with reference to FIG.

In FIG. 1, a facsimile apparatus 1 as a reading and recording apparatus includes a scanner apparatus 3 as a document transport type reading apparatus inside a housing constituting front, rear, left and right side walls as shown in FIG.
00, a serial recording type recording apparatus as a recording apparatus, a control board, and a power supply are respectively built-in.

The housing is basically composed of a lower cover 100 as a first housing on the lower side and an upper cover 200 as a second housing on the upper side.

The printer cover 2 serving as a document table is provided with a document width adjusting plate 3 which can be adjusted in width to guide the document in the width direction. The original width adjusting plate 3 is provided so as to be moved to the position shown in FIG.

A detachable document stacking tray 4 is provided on the upper cover 200 behind the printer cover 2, and is configured to protrude from a hole 2a of the printer cover. The document stacking tray 4 is configured such that, for example, when a document of A4 size is transported forward toward the scanner unit 300, the trailing edge does not hang down.

The document conveyed forward with the document surface facing down is conveyed from under scanner unit 200 to the front of apparatus 1.

On the other hand, the recording sheet conveyed to the recording apparatus is a recording sheet table 401 provided on the back side of the apparatus 1.
After the width direction is regulated by the movement of the width adjusting plate 9 provided above, the sheet is ejected to the printer unit described below after the serial recording and below the scanner unit 300.

When the recording sheet is conveyed such that its longitudinal direction is in the front-rear direction of the apparatus, the rear recording sheet support table 5 and the front recording sheet support rod 7 are used to prevent the recording sheet from sagging. Is provided. The support table 5 is built in the recording sheet table 401, and is configured to be brought to a position shown in the drawing by appropriately pulling it out.

The upper cover 200 has a shape surrounding the scanner section 300 as shown in the figure, and the lower cover 1 extends along the edge 202 of the upper cover 200.
00, the scanner unit 30 is removed.
0 can be left as it is on the lower cover 100.

The scanner section 300 is provided with a liquid crystal display section 11, a dial key 10, and other operation sections as shown. Here, when the apparatus 1 is configured other than the facsimile apparatus, the operation unit is appropriately changed.

Similarly, in the case where a monochrome CCD line image scanner is provided in the scanner unit 300 and in the case where a color CCD line image scanner is provided, the scanner unit 300 can be easily attached to and detached from the lower cover 100 as described later. Therefore, the specification of the device can be easily changed.

FIG. 2 is a three-dimensional exploded view of the apparatus 1, in which the upper cover 200 is omitted.

In the figure, the same reference numerals are given to the components already described, and the description thereof is omitted. The lower cover 100 in which a base serving as a bottom surface, a side wall serving as an external surface, and an opening surface surrounded by the side wall are integrally formed. A scanner unit 300, which is a document-conveying-type reading device that reads a document while transporting a document therein, and a printer 400, a serial-recording-type recording device that performs serial recording while transporting a recording sheet, are connected to these devices. A control board 500 for controlling and a power supply 600;
Ink absorber 1 that absorbs ink that is not required during initial ejection
3, the rear cover 15, the recording sheet table 8, and the speaker 16 can all be fixed to the lower cover 100 without using any tools.

Therefore, a very simple production line can be realized when assembling is automated. That is, it is possible to perform assembling without a skilled person. Alternatively, assembling by a simple operation of holding each unit by the robot apparatus and moving the unit downward is possible. Therefore, the initial investment including the injection molding die can be sufficiently complemented by simplifying the parts assembling process.

On the other hand, the upper cover 200 is similarly configured to be fixed without using any tools. As shown in FIG. 3, when attaching the upper cover 200, the hook portion 260 of the upper cover is inclined at an angle of about 20 °.
Into the hook receiving portion of the lower cover. In FIG. 4, after being inserted in the direction of E at an angle 20, it is attached by rotating in the direction of F to reach the state of (3). In the state of (3), the claw portion 261 of the upper cover and the claw portion of the lower cover in FIG. 3 are simultaneously coupled so as not to rotate in the direction opposite to the direction F. In order to achieve such a configuration, the dimensions of the hook portion 260 of the upper cover and the hook receiving portion 261 of the lower cover shown in FIG. 5 are as follows.

H3>H4>h2> h1, (h3-h1)
> (H2-h1) When this is applied to specific dimensions, the insertion angle is 20 °,
Assuming that h1 = 4.5 mm, h3 = 6 mm, and H4 = 4.8 mm, h2 = 4.7 because h1 = h2XCOS20 °.
It becomes 8. Accordingly, referring to FIG. 4, (1) the insertion can be inserted as (H4 = 4.8)> (h2 = 4.78) in a state of being inclined at 20 °. (2) By rotating, the rotation direction is restricted by the claw portion, and (h3 = 6)> (H4 = 4.8), so that the hook does not come off in the front-rear direction. (3) (h3-h1 = 1.5) >> (h2-h1 =
0.28) Even if there is play in the vertical direction, there is no escape in the front-back direction. Also, 0.28 is an appropriate play as cover alignment play, and there is no problem in quality. The angle is 0
It can be configured if it is set between degrees and 90 degrees.

The lower cover 100 and the upper cover 200
Is substantially horizontal at substantially the center of the overall height of the device 1 (FIG. 8).
(As indicated by the height dimensions H1 and H2).

Next, a paper feed unit is connected to the printer unit 400. Further, the scanner unit 300 is coupled to the scanner main unit so that the panel unit opens and closes around a hinge (not shown). The scanner section 300 has a hinge section 300a, and a hole section 100a of the lower cover 100.
It is mounted so that it can be rotated and opened. Control board 50
Numeral 0 is for comprehensively controlling the printer unit 400 and the scanner unit 300. The power supply unit 600 supplies power to the printer unit 400, the scanner unit 300, and the control board unit 500, respectively.

Each of these units is configured independently as shown in the figure, and is fixed to the lower cover 100.

The arrow in FIG. 6 is an external perspective view showing how each unit is moved when each unit is fixed to the lower cover 100. For this movement, the mouth is moved as described above. A bot device can be employed.

In this figure, the control board 500 is indicated by an arrow D1.
And is fixed to the lower cover 100. The scanner unit 300 is moved in the direction of arrow D2 to
00 is fixed. The ink absorber 13 is fixed to the lower cover 100 by moving the scanner unit 300 in the direction of arrow D3. The printer unit 400 is moved in the direction of arrow D4 and fixed to the lower cover 100. Power supply 600
Is moved in the direction of arrow D5 and fixed to the lower cover 100.

That is, in the plan view of the lower cover 100 in FIG. 7 and the sectional view taken along the line GG of FIG. 7 in FIG. 8, the upper cover 100 is divided into upper and lower portions at almost half the height of the product. , And are fitted up and down at the outer peripheral portion. That is, a thin portion 181a is formed around the upper portion of the outer wall 181 of the lower cover 100, and the lower cover rib 182 is provided to stand upright on the outer wall.
Are provided in large numbers.

On the other hand, since the upper cover 200 is also provided with an edge portion 203 serving as a thin portion around the outer wall, the edge portion 203 of the upper cover thin portion is constituted by the lower cover thin portion 181a and the lower cover rib 182. Into the gap 183, the outer walls of the upper and lower covers are fitted to each other, and the front, rear, left and right positions are determined, thereby securing rigidity.

The height of the thin portion is higher at the edge portion 203.
It is configured to be larger than the thin portion 181 by a predetermined amount so that the clearance h can be configured. In other words, the slits are formed all around the joint of the upper and lower covers, and the joints of the upper and lower covers are made invisible with these slits.
A design effect that makes the product height appear low is secured.

On the other hand, at the two corners behind the lower cover, an engaging portion 185 which is a patch claw elastically deforming inside the outer wall is formed, and a hole 185a is formed at the engaging portion. The upper cover is provided with a claw 202 having a triangular claw at a position where it fits into the hole 185a.

Therefore, when the upper cover 200 is moved from the top to the arrow D10 (see FIG. 2) when the upper and lower covers 100 and 200 are aligned, the triangular claw 202 causes the engaging portion 185 of the patch claw to engage 185b ( (Indicated by the two-dot chain line in the figure)
When the hole 185a comes over the claw portion 202, it returns to the original position. As a result, even if the upper cover 200 tries to come off, the claw 202 lifts the engaging portion 185, so that the upper and lower covers can be kept from coming off.

On the other hand, a notch serving as a hole 201 is provided in the thin portion 203 of the upper cover 200. When removing the upper cover 200, the tool T is pushed through the notch hole 201 to engage the patch claw. By elastically deforming the portion 185 inward, the fitted state of the upper and lower covers 100 and 200 can be released.

As described above, since the upper and lower covers are fitted around the outer wall and the fixing claws are provided near the outer periphery, the exterior strength is enhanced. Since there is no need for fixing in any case, the workability of attaching and detaching is improved.

Next, in FIG. 7, the lower cover 100 is configured to be in each room in order to secure a predetermined strength as shown in FIG.
0 is stored, and the protrusion 189a regulates the outer periphery of the power supply so as not to move.

The outer shape of the chamber 187 is determined in order to accommodate the ink absorber 13 in a stationary state, and the ribs 88 projecting into a part of the absorber 13 to cope with a shape change due to drying. Making it possible. The lower cover 100 is provided with a room 187 surrounding the periphery in substantially the same shape and area as the outer shape of the absorber 13, and further includes a rib 88 perpendicular thereto. Absorber 13
Is inserted into the enclosure of the room 187 and the slit cut in advance cuts into the rib 88 to prevent the rib 188 from coming off. The height of the room 87 is set higher than the height of the absorber 13 so that the waste ink permeated into the absorber 13 does not overflow.

The control board is formed by the notch 1 formed in the wall 193.
The board enters the notch 93a, and is fixed in an upright state such that the connector 555 is located in the notch 192 at the back.

The printer unit 400 has a hole formed in the main body, the hole being engaged by the left and right engagement portions 197.
After being roughly guided by the guide guide 195, the main body is fixed in a state of being positioned on the bottom surface 196. This engaging portion 197
A through-hole is formed below the bottom, and a tool can be inserted from the bottom.

Further, since each unit is positioned so as not to interfere in the front-rear and left-right directions, there is no order when the unit is fixed to the lower cover 100, so that the assembling property is good and only the necessary units can be removed. It can be removed, improving maintainability.

The power supply unit 6 is a part of the printer unit 400.
00, or a structure in which a part of the scanner unit 300 presses the upper direction of the control board unit 500, the power supply unit 600, the control board unit 500, and the lower cover 20
Fixing with 0 is simple, and the assembling property is further improved.

FIG. 9 is a plan view of the control board 500 and the printer 400. The control board unit 500 includes a main board 551
And the sub-board 552 and the board chassis 553 as an integrated unit, which is fixed to the lower cover 100 by a mounting method described later,
00 and the scanner section B. Therefore, on the main board 51, the control circuit / connector section of the printer section 400 can be provided behind and the control circuit / connector section of the scanner section 300 can be provided before, so that the circuit can be efficiently arranged, the board can be downsized, and noise can be reduced. Also become stronger.

In the printer unit 400, a sheet feeding unit 401 supports a middle plate by a fulcrum (not shown), and the middle plate is pressed by a spring. The base 401 is the printer body 4
00 is fixed by screws or the like. The recording paper S is stacked on the middle plate, the back surface is supported by a paper feed tray provided on a paper feed base so as to be extendable and contracted, and the width direction is set by a side guide movably provided on the middle plate. Be regulated. The paper feed roller feeds out the recording paper one by one and sends it out to the printer unit 400.

The printer main unit 400 is a so-called ink jet recording unit.
0 is a printer chassis which is a frame of
The lower cover 100 is fixed by an attachment method that engages with the lower cover 97.

Reference numeral 412 denotes a paper feed roller, which presses a pinch roller 413 disposed opposite thereto to feed the recording paper S sent from the paper feed unit to a further downstream printing unit.

Reference numeral 414 denotes a platen for supporting the back surface of the recording paper in the printing unit. On the front surface of the recording paper, a recording image is formed by an ink head 417 attached to a carriage 416 supported by a guide shaft 415 and reciprocating. Is done.

After that, the recording paper S is discharged from the printer unit 400 by the recording paper discharge roller pair 418, and
The sheet is conveyed and loaded on the lower cover 100.

Here, the recording paper conveyance and the recording operation of the printer unit 400 are performed by a motor, a sensor, a head drive circuit and the like (not shown), and these controls are controlled by the control board unit 500. The board 421 is a recording relay board that relays signals from these motors, sensors, head drive circuits, and the like and transfers the signals to the control board unit.
The absorber 13 that absorbs and retains waste ink generated during operations such as ink clogging prevention in the printer unit 400 is attached to the lower cover 100 as described above.

Next, the scanner section 300 will be described with reference to FIGS.

The scanner unit 300 irradiates the original G with light, converts the reflected light into an electric signal, and transmits this signal to another machine according to the operation mode.
Is to be transmitted. The document G is stacked on the document table 2.

In the scanner body 300, reference numeral 334 denotes a frame of the scanner 300, and a scanner base for guiding the lower side of the original G. The scanner base 334 is rotatably attached to the lower cover 100 by an attachment method described later. ing. Further, the scanner base 334 is provided with a separation roller 335 for feeding out the document, a contact sensor 336 for reading image information of the document, a roller 337 arranged to be opposed to the contact sensor 336 and pressed.

The panel portion is rotatably attached to the scanner base 334 by a fulcrum (not shown), and an upper document guide 338 for guiding the upper side of the document, a separating member 339 arranged to be opposed to the separating roller 335 and pressed, Panel frame 3 partly attached to upper document guide
40 and the like are provided. The panel frame 340 is provided with an operation key 341, a display unit 342 such as an LCD, a panel substrate 343 on which these are mounted, and the like.

Reference numeral 344 denotes a pair of Harabashi paper rolls.
The document conveyed by the separation roller 335 and the CS roller 337 is discharged.

Here, the document feeding and reading operations of the scanner unit 300 are performed by a motor and a sensor driving circuit (not shown), and the control of these and the display control of the panel unit 3002 are performed by a control board. Controlled by the unit 500.

Next, with reference to FIGS. 12, 13 and 14, the control board section 500, the power supply section 600, and the arrangement and electrical coupling of these units will be described.

The control section 500 has a main board 551 and a sub-board 552 mounted on a board chassis 553 made of metal. The main board 551 includes a modular jack 554, a centro connector 555, a CPU 556, and an RO.
M557, RAM 558 and the like are mounted.

Here, the CPU 55 that frequently replaces components is used.
6, the ROM 557 is located above the substantially center of the main board 551, and is located where the upper cover 200 is removed and exposed. See FIG. Also, the main board 55
1 and the sub-board 552 are connected to the cables 559a and 559b.
And the connector is connected to the main board 551 at a position substantially lower than the center. Here, the sub substrate 5
52 is preferably a so-called NCU which is a collection of line control circuits. In this case, without improvement of the main board 551, the sub-board 551 (NC
It can be easily modified by replacing U). Also, 5
Reference numeral 60 denotes a substrate cover for shielding the sub-substrate 52.
1) Dropping screws or damage with tools.
This prevents the scattered ink from adhering from 00. In particular, when the sub-board 551 is an NCU, an accident prevention effect is high because there is a line high-voltage electric circuit.

Here, if the width of the scanner section 300 is made smaller than that of the printer section 400 and the sub-board 552 is arranged beside the scanner section, the space efficiency is increased and the whole apparatus can be made smaller. Further, the printer unit 40
0, if the recovery unit 22 for performing head cleaning or the like is arranged in the standby position of the ink head 417 in a direction opposite to the control board unit 500 (that is, on the right side of the lower cover 100), the ink splattering at the time of the recovery operation is reduced. Regardless of the substrate, a substrate short-circuit accident due to ink wetting can be prevented.

In the power supply section 600, the power supply chassis 661 is made of metal and is integrated with the power supply board 663 on which electric components such as the inlet 662 are mounted. Further, a part 661a of the power supply chassis 661 is screwed to the printer chassis 411 and is grounded. Further, the printer chassis 411 may be connected to the ground wire 664.
And the board chassis 553 is grounded. The power supply unit 600 is disposed behind the printer unit 400 on the lower cover.

Each unit 400, 300, 50
Reference numerals 0 and 600 are incorporated in the positions indicated by the respective lower covers 100. The control board unit 500 is a printer cable 471 for the printer unit 400, a scanner cable 372 for the scanner main unit 300, and a panel cable for the panel unit 300. At 373, the power supply unit 600 is electrically connected to each other by a wiring 674.

As shown in FIG. 12, each cable 471, 3
72, 373 are connected above substantially half of the main board 551, and the upper cover 200 and the lower cover 1 are connected.
00 is almost half the height, so the upper cover 2
Each unit 400, 300, 50
The connection of 0 is released, and the maintenance work is easy.
Further, each cable is drawn out from the control board side of each unit, so that the cables can be shortened, and there are effects such as cost reduction and resistance to noise.

Here, the power cable 374 and a part of the cable of the scanner unit 300 may be routed through the recording relay board. This has the effect of reducing heat dissipation of the substrate 551. At that time, it is desirable to provide a drive driver for the motor on the recording relay board.

Next, a description will be given of a method of fixing the power supply unit 600 and the rear cover 15 serving as a hand guide to the lower cover 100. The lower cover 100 has a slightly larger area than the outer shape of the power supply unit 600. Regulating ribs 189
a is provided. The ribs 189a are connected to the power supply unit 6
The height is set higher than 00. Therefore, the power supply unit 60
If 0 is dropped into a predetermined space of the lower cover 100, the front, rear, left and right lower positions are determined.

On the other hand, a rear cover 15 serving as a hand guide
Are positioned so as to cover the power supply unit 600. The positioning boss 190 of the lower cover and the positioning hole of the hand guide are fitted to determine the position, and the triangular claw is fitted to the engaging portion 191 of the patch claw having the same shape as 185, thereby preventing the hook from coming off in the upward direction. At the same time, the power supply unit 600 is regulated in the upward direction. In addition, the rear cover, together with the lower cover rib,
The power supply unit 600 is covered to prevent adhesion of scattered ink from the printer unit 400.

The rear cover 15 functions as a guide for manually inserting recording paper into the printer main body 400 from under the paper feeding unit.

Next, a method of fixing the control board section 500 and the lower cover 100 will be described.

The lower cover 100 has a Centro connector 5
A notch 192 that is slightly wider than the shape of 55 is provided, and serves as a guide for dropping the control board unit 500 from above. Further, the positioning boss 194 is mounted on the board chassis 5.
An accurate position is determined by fitting into a positioning hole 53 (not shown). Further, the main board 551 and the sub-board 152 fit into the cutout portions 193a of the rib 193, and regulate the movement of the board. In order to prevent the detachment in the upward direction, a patch claw such as 185 (not shown) may be hooked on the board chassis 553, or the board chassis 553 may be screwed to the printer chassis 411 from the side. You may just hold it down from above.

Next, a method of fixing the printer unit 400 and the lower cover 100 will be described.

The position is determined by fitting the positioning boss 195 provided on the lower cover with the positioning hole 411a of the printer chassis 411. Here, since the tip of the positioning boss 195 has a conical shape, the position is guided only by dropping the printer unit 400 from above. Thereafter, the lower portion is supported by the receiving portion 196, and the upward pressing is performed by the claw portion 197 of the elastically deformed triangular claw.
It is prevented from coming off by being hooked on 11b.

Next, a method of fixing the scanner unit 300 and the lower cover 100 will be described.

Surface 1 of lower cover for receiving scanner section 300
01 is higher than the surface that receives other units,
This is a surface located in front of the printer unit 400 and above the discharged recording paper, and has a cross section that is uneven, and has a large section modulus and high strength. With such a shape,
The rigidity for supporting the printer unit and the scanner unit with the same lower cover can be set.

The positioning boss 10 provided on the lower cover
The position is determined by fitting a positioning hole (not shown) of the scanner base 334 with the positioning hole 2. Here, the positioning boss 102
Since the tip has a conical shape, the position is guided simply by dropping the scanner unit 300 from above. Thereafter, the downward direction is supported by a predetermined receiving portion (not shown) of the surface 101, and the front, rear, left and right positions are slightly away from the outer shape of the scanner base 334, and a plurality of ribs 10 provided on the lower cover 100 are provided.
3 The upward restraint is prevented from coming off by fitting the triangular claw 334a of the scanner chassis 334 to the patch claw 104 of the lower cover as shown in the figure, as described above.

As described above, while each unit is assembled to the lower cover 100, the lower cover 100 is formed with strong ribs and walls for receiving the front, rear, left and right sides of each unit. In addition, it is possible to form an elastically deformable patch claw shape.

Since the base of each unit is the same lower cover 100, the rigidity of the product itself is improved. Furthermore, since each unit can be dropped and assembled from above, the assembly workability is good, and the unit can be removed alone,
Good maintainability.

In the above-described embodiment, the serving section is fixed to the printer main body 400, and then the printer main body 400 is fixed to the lower cover 100. However, the paper feeding section and the printer main body 400 are separately provided as separate units. Each of them may be fixed to the lower cover 100. When the paper is fixed to the printer main body 400, the reference position of the paper is easily determined, and the recording accuracy is improved. Further, when the printer unit 400 is directly fixed to the lower cover 100, the unit weight of the printer unit 400 can be reduced, and the assembling work is further facilitated.

The document table 2 serving as a slider cover is
Although it is connected to the upper cover 200, it may be connected to any other unit such as the printer unit 400. Upper cover 2
When the upper cover 200 is removed, the slider cover comes off at the same time when the upper cover 200 is removed. The printer unit 400
When attaching the upper cover 200,
Since the slider cover 2 has already been connected to the lower cover 100, the slider cover 2 is attached as a single upper cover, so that the work is light and easy.

The rear cover 15 serving as a hand guide
Since the power supply unit 600 is firmly fixed and shielded because it is attached to the lower cover 100 as an independent component, it may be configured integrally with the lower cover 100, the upper cover 200, or the printer unit 400. In that case, the number of parts can be reduced,
In particular, in the case where the power supply unit D is integrated with the upper cover, maintenance of the power supply unit D can be performed simply by removing the upper cover, and work is easy.

FIG. 11 is a cross-sectional view of the device 1 after completion. The same reference numerals are given to the components already described, and the description is omitted. The units are arranged without waste as shown in the figure.

FIG. 15 is a cross-sectional view of the apparatus 1 showing a state in which the recording head 417 is exchanged by opening the printer cover 2, and is exchanged from above the printer 400 as shown. FIG. 25 is a sectional view of this part.
FIG. 26 illustrates an operation of opening the printer cover 2. FIG. 25 shows a normal state, in which the printer cover 2 is opened when performing operations such as replacing the recording head.
6 In FIG. 26, the document auxiliary tray 4 does not move even when it is opened and closed because it is attached to the upper cover 200.

After the printer cover 2 is opened, a recording head attaching / detaching mechanism provided on the carriage 416 so that the recording head 417 of the printer 400 can be attached / detached from the upper side. A storage box 444 is provided which is movable between a) and the attachment / detachment position (b), and has a member 422 for storing the recording head 417 from obliquely above. This recording head 41
7, the storage box 444 for energizing the storage box 444 is moved to the printing operation position side (a) against the pressing force of pressing the printing head contact portion against the carriage contact portion provided on the carriage 416 side. And an operation lever 445 having a built-in compression spring 451 for moving. The cam portion engages with the shape portion 444b of the storage box 444 by operating the operation lever 445 in the direction of arrow K in FIG. The storage box 444 is configured to move in the direction of the arrow L1 against the urging force of the box 444 urged to move leftward by the spring 450 by the pressing action of the 445a.

In FIG. 16, the recording head 417
An adjustment mechanism is provided on the carriage so as to be operable from above in order to adjust the distance H between the recording section of the recording sheet and the recording surface of the recording sheet. A round bar 415 disposed at a lower portion of the main body for reciprocating drive along the longitudinal direction.
A plate member 495 having a sliding surface juxtaposed with the main body and disposed at an upper portion of the main body;
The carriage 416 can be rotated around the round bar 415 by holding the recording head 417 from the front and back sides.
And a holding member 494 for adjusting the distance H between the recording section and the recording surface of the recording sheet, and for holding the adjusted rotational position in a stepwise manner.

For this purpose, the holding member has a projection 494j formed in FIG.
Of the sliding surfaces 494a, 494 so that the projections fall into the locking grooves 416a-1, 416a-2, 416a-3.
b, 494c is configured to slide on the back surface of the plate member 495 so as to be sandwiched together with the pressing member 499.

In the printer constructed as described above, the operation lever 4 shown in FIGS.
First, 45 is rotated in the direction of arrow K1 to move the storage box 444 so that the recording head can be stored. Further, the holding member 494 is set at a predetermined position from above.

Next, referring to FIG.
Is dropped into the storage box 444 by its own weight and is set. At this time, the box is moved after moving in the directions of the arrows S1 and S2 by colliding with the member 222, so that the box is turned by rotating the operation lever 445 downward. When the 444 moves in the lateral direction, the contact 407b can be brought into contact with the contact 407b by moving substantially horizontally. That is, if the member 222 is not provided, the contact point 407b may be damaged, but this is prevented.

The printer section 400 is provided with a means (for example, an electrothermal converter or a laser beam) for generating thermal energy as energy used for ejecting ink, particularly in the ink jet recording system. Although the printing apparatus of the type in which the state of the ink is changed by the energy has been described, according to such a method, it is possible to achieve higher density and higher definition of the recording.

The typical configuration and principle are described in, for example, US Pat. Nos. 4,723,129 and 4,740.
It is preferable to use the basic principle disclosed in the specification of Japanese Patent No. 796. This method can be applied to both the so-called on-demand type and continuous type. In particular, in the case of the on-demand type, liquid (ink)
By applying at least one drive signal corresponding to the recorded information and providing a rapid temperature rise exceeding film boiling to an electrothermal transducer arranged corresponding to the sheet or the wave path where This is effective because heat energy is generated in the electrothermal transducer, causing film boiling on the heat-acting surface of the recording head, and as a result, bubbles in the liquid (ink) corresponding to this drive signal on a one-to-one basis can be formed. It is. By discharging the liquid (ink) through the discharge opening by the growth and contraction of the bubble, at least one droplet is formed. When the drive signal is formed into a pulse shape, the growth and shrinkage of the bubble are performed immediately and appropriately, so that the ejection of the liquid (ink) having particularly excellent responsiveness can be achieved, which is more preferable.

As the pulse-shaped drive signal, those described in US Pat. Nos. 4,463,359 and 4,345,262 are suitable. Further, if the conditions described in US Pat. No. 4,313,124 relating to the temperature rise rate of the heat acting surface are adopted, more excellent recording can be performed.

As the configuration of the recording head, in addition to the combination of the discharge port, the liquid path, and the electrothermal converter (a linear discharge channel or a right-angle discharge channel) as disclosed in the above-mentioned specifications, a thermal action A configuration using U.S. Pat. No. 4,558,333 or U.S. Pat. No. 4,459,600 which discloses a configuration in which a surface is bent is also included in the present invention. In addition, for multiple electrothermal transducers,
JP-A-59-123670 which discloses a configuration in which a common slot is used as a discharge part of an electrothermal transducer, and JP-A-59-123670 which discloses a configuration in which an opening for absorbing a pressure wave of thermal energy corresponds to a discharge part. A configuration based on 138461 may be adopted.

Further, as a full-line type recording head having a length corresponding to the width of the maximum recording medium that can be recorded by the recording apparatus, the length is determined by combining a plurality of recording heads as disclosed in the above-mentioned specification. This may be either a configuration satisfying the above requirements or a configuration as a single recording head formed integrally.

In addition, the print head is replaceable with a print head of a replaceable chip type, which can be electrically connected to the main body of the apparatus or supplied with ink from the main body of the apparatus, or is integrated with the print head itself. Alternatively, a cartridge type recording head provided with an ink tank may be used.

It is preferable to add recovery means for the printhead, preliminary auxiliary means, and the like provided as components of the printing apparatus of the present invention since the effects of the present invention can be further stabilized. . If these are specifically mentioned, capping means for the recording head, cleaning means, pressurizing or suction means, preheating means using an electrothermal transducer or another heating element or a combination thereof, and printing Performing a preliminary ejection mode for performing another ejection is also effective for performing stable printing.

Further, the recording mode of the recording apparatus is not limited to the recording mode of only the mainstream color such as black, but may be a single recording head or a combination of plural recording heads. Alternatively, the apparatus may be provided with at least one of full colors by color mixture.

In the embodiments of the present invention described above, the ink is described as a liquid. However, an ink that solidifies at room temperature or lower, or an ink that softens or liquefies at room temperature may be used. In general, in the ink jet system, the temperature of the ink itself is controlled within a range of 30 ° C. or more and 70 ° C. or less to control the temperature so that the viscosity of the ink is in a stable ejection range. It is sufficient if the ink is in a liquid state.

In addition, in order to positively prevent a temperature rise due to thermal energy as energy for changing the state of the ink from the solid state to the liquid state,
Alternatively, in order to prevent evaporation of the ink, an ink which solidifies in a standing state and liquefies by heating may be used. In any case, the application of heat energy causes the ink to be liquefied by application of the heat energy according to the recording signal and the liquid ink to be ejected, or to start to solidify when reaching the recording medium. The present invention is also applicable to a case where an ink having a property of liquefying for the first time is used. In such a case, as described in JP-A-54-56847 or JP-A-60-71260, the ink is held in a liquid state or a solid state in the concave portion or through hole of the porous sheet. It is good also as a form which opposes an electrothermal transducer. In the present invention, the most effective one for each of the above-mentioned inks is to execute the above-mentioned film boiling method.

In addition to the above, the recording apparatus according to the present invention may be provided not only as an image output terminal of an information processing apparatus such as a computer but also integrally or separately, a copying apparatus combined with a reader or the like, and a transmission / reception apparatus. It may take the form of a facsimile machine having functions.

[0100]

As described above, the recording paper can be opened and closed without damaging the document auxiliary tray by attaching the document auxiliary tray to the upper cover, making a hole in the printer cover, and letting the document auxiliary tray come out from the hole. .

[Brief description of the drawings]

FIG. 1 is an external perspective view in which the apparatus of the present invention is configured as a facsimile apparatus.

FIG. 2 is a three-dimensional exploded view showing an assembled state of the device 1 of FIG.

FIG. 3 is a diagram showing attachment of an upper cover of the apparatus 1.

FIG. 4 is a diagram showing a method of connecting the claw portions of the device 1;

FIG. 5 is a diagram showing a dimensional relationship between a claw portion and a receiving portion.

FIG. 6 is an external perspective view showing how each unit is moved when fixing each unit to the lower cover 100.

7 is a plan view of the lower cover 100. FIG.

8 is a sectional view taken along the line GG of FIG. 5 after the upper cover is attached.

FIG. 9 is a plan view of a control board 500 and a printer unit 400.

FIG. 10 is a top view of the scanner unit.

FIG. 11 is a central sectional view of the device.

FIG. 12 is a perspective view showing a state where an upper cover is removed.

FIG. 13 is a block diagram showing a wiring state of each unit.

FIG. 14 is a front view of a control board.

FIG. 15 is a central sectional view showing removal of the cartridge.

FIG. 16 is a side view of the carriage unit.

FIG. 17 is a diagram illustrating the movement of the carriage unit when the cartridge is taken out.

FIG. 18 is a view illustrating how the carriage is mounted.

FIG. 19 is a top perspective view of a carriage unit.

FIG. 20 is a view of the carriage when the printer cover of the apparatus is opened.

FIG. 21 is a diagram showing a conventional example of mounting an upper cover.

FIG. 22 is a sectional view of a conventional example.

FIG. 23 is a sectional view of a conventional printer cover opening / closing unit.

FIG. 24 is a cross-sectional view when the printer cover opening / closing section of the conventional example is opened.

FIG. 25 is a sectional view of a printer cover opening / closing section of the apparatus.

FIG. 26 is a cross-sectional view when the printer cover opening / closing section of the apparatus is opened.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Reading / recording apparatus 2 Printer cover 4 Document auxiliary tray 8 Recording sheet stand 13 Ink absorber 15 Rear cover (3rd housing) 100 Lower cover (1st housing) 111 Opening 185 Engaging part 104 Engaging part 187 Room 189 Room 197 Engagement section 200 Upper cover (second housing) 201 Hole section 202 Claw section 203 Edge section 300 Scanner section (document transport type reading apparatus) 400 Printer section (serial recording type recording apparatus) 416 Carriage 417 Recording head 500 Control Substrate 600 Power supply

Claims (5)

[Claims] 1. A tray, a cover to which the tray is attached, and a part of a second cover that covers a part of the cover, and a hole is provided from the hole to the outside of the second cover. An image reading device, which is provided. 2. The image reading apparatus according to claim 1, wherein the tray and the second cover have a function of stacking originals. 3. The image reading apparatus according to claim 1, wherein the second cover is hingedly connected to a part of the cover and can be opened and closed. 4. A tray, a cover to which the tray is attached, and a part of a second cover that covers a part of the cover, and a hole is provided from the hole so that the tray is outside the second cover. An image reading / recording apparatus, wherein the second cover is protruded, and the second cover is hingedly connected to a part of the cover, is openable and closable, and a recording head inside the apparatus is replaceable. 5. The apparatus according to claim 4, wherein the tray and the second cover have a function of stacking documents.