JPS61221052A - Image formation apparatus - Google Patents

Abstract

PURPOSE:To prevent a record paper from going slowly and meandering during transport by disposing a pair of holding members one of which can advance and retreat to and from the other, on both sides of the bottom of a recording medium storing space for stacking recording media, thereby to press and hold the recording media. CONSTITUTION:A placing space 311 for continuous record paper such as fan-fold paper or the like comprises a side plate 311A which is a reference surface for regulating a transport path in the initial stage, and a bottom plate 311C provided with a convex part 311B projecting for attaining the stable stacking state. The bottom plate 311C is inclined downward toward the inner side, whereby record paper is leaned in the stacking state to the inner side surface 311D to be kept from falling off by impact produced by opening and closing a paper feed unit. A pressing plate 15 is held in its position by a screw 318 and urged to the side plate 311A by a spring 314 to press the recording paper. Thus, the position of the record paper is regulated at the uppermost course of a transport passage and afterwards the stable transport condition of the record paper can be attained.

Description

Detailed Description of the Invention [Technical Field] The present invention relates to an image forming apparatus, and in particular, to a conveyance system for a recording medium in the form of continuous paper such as roll paper or fanfold paper, and a system for conveying a recording medium over the entire width of the recording medium. The present invention relates to an image forming apparatus equipped with a recording means for forming an image.

[Prior Art] As a conventional image forming apparatus of this kind, there is one disclosed by the applicant in Japanese Patent Application No. 59-101508 to No. 59-101512. These are connected to each other.
Equipped with a recording means that has a conveyance system and a liquid jet recording device that can be easily separated, and a recovery means that performs ejection recovery processing of the liquid jet recording device, it facilitates the work of replacing the recording medium and the maintenance work of each part in the separated state. Image forming apparatuses have been proposed in which various parts are properly positioned to form high-quality images.

However, in such an image forming apparatus, sufficient consideration has not been given to an appropriate structure for stably transporting the recording medium.

[Objective] An object of the present invention is to ensure that the recording medium is positioned at an appropriate position on the conveyance path in the recording medium storage section of the conveyance system, thereby preventing the recording medium from slowing or meandering during conveyance. An object of the present invention is to provide an image forming apparatus that can stably convey images.

〔Example〕

Hereinafter, the present invention will be described in detail with reference to the drawings.

1.1 Appearance Figures 1 and 2 (A) and (B) show an example of the schematic configuration of the image forming apparatus of the present invention. This example shows a host system that generates image information and control signals related to recording. This is an image forming apparatus that can be connected to.

In these figures, reference numerals, names of parts, functions, and meanings correspond as follows.

(Margins below) 1.2 Inside (1) Inside of the recording system unit FIG. The name world, function, and meaning of each part correspond as follows. Note that in this configuration, the recording head 110
, the control system including the cartridge tank 120 is disclosed in, for example, Japanese Patent Application Nos. 58-244131 to 58-2 by the applicant.
The inkjet printer disclosed in No. 44138 can be used.

(Margins below) (2) Inside of the paper feed unit Figure 4 is a perspective view showing the paper feed unit 300 opened to explain the internal configuration of the paper feed unit/ ) 30G, with reference numerals and each part name field 1 Function and meaning correspond as follows.

(Left below) (3) Inside of the controller unit Figure 5 (A) to (C) shows the controller unit 20G
In this example, a controller unit (2) 200 is disposed below a recording system (22) 100.

Furthermore, the controller unit 200 is made independent of the recording system unit 100 to facilitate maintenance work, and as described later, even if ink leaks inside the recording system unit 10G, the leaked ink can be plugged. A blocking plate for stopping the ink, a member for guiding the ink to the drain tank 800, and the like are provided so that the controller unit 200 is protected from ink leakage.

In Fig. 5 (A) to (C), reference numerals and names of parts 1
Function and meaning correspond as follows.

(Margin below) 2.1 Basic operations Next, the basic operations of each part of the device will be described.

(1) Power supply 0N10FF a, ON Paper feeding unit 300 is closed L! i (shape wQ in Figure 1
), turn the power switch 1500 upward.At this time, the BUSY lamp, which will be described later, lights up and each part is checked.

If there is no abnormality, the BtlSY lamp will turn off after about 5 to 10 seconds, the ON LINE lamp will turn on, and the image data will be ready for printing.

At this time, if the head unit 110 has a cap 14
If 0 is not connected, it is automatically capped.

If an abnormality is found, an error code will be displayed on the display panel.

If the paper feed unit) 300 is placed, the head unit) 110 will not be capped automatically even if it is not capped, and it will be considered that the cap is placed no matter where the cap is placed. cap U
Press the switch on P/Ow to close the cap.

b, OFF Turn the power switch 1500 downward.

(2) 011 LINE mode and OFF LINE mode ON LINE mode is ON when the LINE lamp is lit, OFF LINE% is 0) I L
INE 5 Refers to the state where the lamp is off.

When in the ON LINE mode, form feed, initialization, and printing of image data are possible under the control of the host system.

When in OFF LINE mode, press the internal switch to feed one sheet, check print,
Recovery processing is possible.

Normally, 0N is set by pressing the ON LINE switch.
LINE mode and OFF LINE mode can be switched, but in any of the following states, OFF LI
) It is not possible to switch from IE mode to ON LINE mode.

・When the BUSY lamp is lit.

- When the paper feed unit is open.

・When the head is not capped.

・When it is displayed that an error has occurred.

It is assumed that the device is in 0NLINE mode immediately after the power is turned on.

(3) How to set paper Figures 6(A) to 6(C) show examples of mounting operations when fanfold paper is used as the recording medium.

・Make sure the power is turned on.

・Check that flap 40G is open.

- Open the paper feeding unit 300.

- Place paper P on each deck section 310.

The orientation is such that the black rectangular mark (TOF mark) is on the back left side of the paper (Figure 6 (A)).

- Open the lower paper feed mechanism (Figure 6 (B)).

・Roller 320 that feeds paper P downward and lower pinch roller 33
0 (Fig. 6(C)).

- While opening the upper roller 350, pass one sheet of paper P through the upper roller along the paper guide 380, leaving the paper outside the flap (FIG. 6(D)).

・Close the lower paper feed mechanism so that the paper does not slacken.

・Press the FF switch to feed the paper.

If the paper is placed in the wrong direction,
Since the OF mark cannot be found, an error occurs and the program stops.

- Close the paper feeding unit 300.

- Check that no errors are displayed on the display panel.

(0 Display Panel Operation FIG. 7 shows an example of the configuration of the display panel 500.
Here, the correspondence between the reference numerals and names of the switches, their functions, and when they are activated, and the correspondence between the reference numerals and names of the indicators and their meanings when they are lit are as follows.

FIG. 8 is an explanatory diagram for explaining the display contents of the 7-segment display 550. In this example, FIG.

Among the three digits, the first digit 552 is used as a status display section to display the status, and the bottom two digits 554 are used as an error display section to display error details, and the display as shown in the figure is made in response to the status and error. . Furthermore, decimal points 555, 556, and 557 are lit respectively when the system starts up normally, when there are multiple errors, and when the recording head assembly 130 is not installed.

(5) Switch operation inside the main unit Figure 9 shows an example of the switches and indicators installed inside the device. The correspondence between reference symbols and meanings when lit is as follows.

2.2 Replenishment and replacement of consumables Next, the manner of supplying and replacing consumables is as follows.

(1) Removing paper P This can be done by the following steps.

・Make sure the power is on.

- Push the FF switch 520 to feed the paper P until all printed parts of the paper P are fed out of the flap 400.

・Cut paper P along the perforations.

[Phase] Take out the paper P from the stacker 700.

- Confirm that no error is displayed on the display panel 500.

(2) Replenishing ink This can be done by the following procedure (see Figure 3).

- Open the paper feeding unit 300.

・Cap ■Press the P/DOWN switch 11 to lower the cap 140 that protects the head unit 11O (once you press it, the cap will fall to the normal position even if you release your hand).

- Pull out cartridge 12G.

- Insert a new cartridge. Cartridge 120
8.1200.120M, 120Y array is black from left.

They are cyan, magenta, and yellow.

・Cap UP/I) Press the switch 11 in 6w to raise the cap 140 (once you press it, the cap will rise to the normal position even if you release your hand).

- Close the paper feeding unit 300.

Note that after lifting the cap, ink is sent from the cartridge tank to a fixed tank (not shown) by a pump.

Once this stationary tank is filled, the pump will stop and printing will be possible. As this fixed tank, for example, those disclosed in Japanese Patent Application No. 58-244131 to No. 58-244138 can be used.

(3) Replacing the drain tank 800 FIGS. 10(A) to 10(C) show an example of a procedure for replacing the drain tank 800, and the process can proceed as follows.

a. Loosen the screw 852 (Figure 1O (A)).

b. Raise the lever 854 (Fig. 1θ (A)).

C. Pull up the drain tank 800 (Figure 1θ (
B)).

d. Pull out the drain tank cap 840 (10th
Figure (C)).

e. Install a new drain tank by reversing the procedure.

f. A new drain tank sealing cap 842 can be attached to the removed drain tank.

Note that in the figure, 820 indicates a waste ink tube.

2.3 Actions to be taken in case of printing defects The causes of printing defects that can be avoided include the following.

■The ink inside the head tip (nozzle) has evaporated and the viscosity has increased.

■Air has entered the nozzle.

■Air has accumulated in the liquid chamber that stores ink inside the head.

These can be removed with one recovery operation.

In order to perform a recovery operation, a cap 140 must be connected to the head 100, and an internal recovery switch 1 is activated.
This operation is initiated by pressing 2.

While this operation is being performed, the recovery processing lamp 13 is lit.

3.1 Details of the paper feeding unit (Fig. 11 shows the paper feeding unit) In Fig. 0 showing an example of the detailed configuration of the paper feeding unit 300, first 302 is the mounting base, and each part inside the paper feeding unit 300 is attached to this pace 302. Can be assembled centrally. 30B is a recording unit)
100, which faces the paper deck section 310, the lower and upper paper feeding mechanisms, their opening/closing mechanisms 340, 370, and the platen 392.
etc. are exposed through the window 30B, and the surface 308B facing the unit 100 is exposed through the window 30B.
This becomes the gap reference plane for 10.

302A and 302B are parts having rotation wheels for rotating the paper feeding unit 300 with respect to the recording system unit 100. 1450 is the second record) 1
A sensor 1420 is used to detect the connection with 00, and a lock mechanism is used to ensure the connection.

Further, 300G is a motor unit for driving the rollers 32G and 350, 325 is a lower transmission roller transmission mechanism including a pulley Gl, a bearing, a retainer, etc. for transmitting the rotation of the motor 3000, and 355 is a pulley G2. ．． Bearings, retainers, etc. and other slip plates 35
2. This is a transmission mechanism of the upper feed roller including 2.

(1) Paper deck part 31G FIG. 12 shows an example of the configuration of the paper deck section 310.

Here, 311 is a recording paper stacking section, and a side plate 311A that serves as a reference surface for regulating the conveyance path in the initial stage, and a paper feeding unit). Bottom plate 31 provided with a convex portion 311B of
1C etc., the bottom plate 311G is tilted toward the back side 3110 (the side opposite to the paper mounting side) so that the recording paper hangs on the back side 311D. This can prevent the recording paper from falling off the stacking section 311 due to the impact caused by the opening/closing operation of the paper feeding unit 300.

Further, in the figure, reference numeral 315 denotes a press plate for the recording paper, which presses the recording paper toward the side plate 311 by a spring 314 stretched between it and the stacking section 315 and biased in the downward direction in the figure.

Moreover, 318 is a screw for holding the position of the presser plate 315. As a result, the position of the recording paper is regulated at the most upstream side of the conveyance path, and a stable conveyance state can be obtained from then on.

(2) Lower paper feed mechanism and lower roller opening/closing mechanism No. 13
The figure shows an example of the configuration of a lower paper feeding mechanism and a lower roller opening/closing mechanism.

The pinch roller 330 for pressing the recording paper P against the lower paper feed roller 320 is provided with an elastic member 332 near its axial center, and the pinch roller 330 obtains a nip amount with the roller 320 at that part to pinch the recording paper P. Make sure you get the state. 34
1 is an opening/closing lever used to separate the pinch roller 330 from the feed roller 320.

342 is a side plate for supporting the pinch roller 330 at both ends thereof, and allows the side plate 342 to rotate around a shaft 343. A pinch roller arm 344 has arm portions 344A and 344B, and is supported by a pin 345 protruding from the side plate 342 between the arm portions 344A and 344B, and is rotatable around the pin 345. Then arm 34
The pinch roller 330 is supported by the arm portion 344A of No. 4,
By tensioning the spring 34B between the other arm portion 344B and the upright portion 342A of the side plate 342,
The pressing force against the feed roller 320 of 30 is obtained. Also,
A skew prevention roller 338 is provided on the side plate 342 at a position immediately before the recording paper P is pinched between the lower paper feed roller 320 and the pinch roller 330. By bringing the skew prevention roller 338 into contact with the recording paper P, it is possible to support the weight of the recording paper P up to the paper deck section 310 and to make the winding angle of the recording paper P around the roller 320 large.

Furthermore, operate the opening/closing lever 341 to move the side plate 342 to the shaft 3.
When rotating around 43, pinch roller 3
30 and the skew prevention roller 338 can both be removed from the feed roller 320.

The opening/closing lever 341 is rotatable around a pin 342A protruding from the pinch roller side plate 342, and is provided with a button 341A at one end that the operator presses when releasing the pinch roller 330 and the like from the feed roller 320. At the end, there is a claw portion 341 that engages with a lock bin provided on the base 302.
Provide B. In addition, by tensioning a spring 348 between the button 341A of the lever 341 and the side plate 342,
The lever 341 is given the habit of turning counterclockwise in the figure, so that a stable engagement state can be maintained.

In addition, the recording system unit side of the side plate 342 is connected to the cap 140.
The side plate 342 rotates clockwise in the figure in response to the engagement, so that the feed roller 320 and the pinch roller 330 are engaged with each other. As a result, even if the operator forgets to close the lower paper feed mechanism after loading the recording paper P, the lower paper feed mechanism closes with the movement of the cap 140, which will be described later. This makes it possible to prevent jams, etc.

(3) Recording surface forming section FIG. 14 shows a recording surface forming section 5390 including a platen 392.
Here, 333 is a hole provided in the platen 392, and the recording paper P is attracted to the platen surface by the fan 390F through the hole 383 to form a recording surface. 385 is the base 302 and panel 30
6, 394 is a spring mounting portion provided on the platen 392, and 396 is a spring for swinging the platen relative to the base 3.
This is a guide hole for a pin 308 protruding from 02. Also,
387 is a sensor that detects recording paper.

As described later, the recording system unit 100 and the paper feeding unit 3
When connected to the recording head unit 11G, the bottle provided on the front side of the recording head unit 110 hits the panel 306 having a reference surface, and at this time the assembly 130 swings to keep the nozzles of the head unit 11G parallel to the reference surface. . At the same time, the platen 392 follows the rocking motion of the assembly 130 via the projection provided on the assembly side by the spring 385, so that the recording surface of the recording paper P regulated by the platen 332 and the nozzle face each other with an appropriate gap. Become.

(0 Motor unit FIG. 15 shows an example of the configuration of the motor unit 3000.
Here, 3002 is a motor, which transmits the rotation of the rotating shaft 3004 via a pulley 3008 and a bell 3008 to a pulley G20 associated with a roller transmission mechanism 325 that sends it downward. G3 is concentric with pulley G20 and pulley 02
A roller transmission mechanism 35, which is a pulley with a diameter smaller than 0, and sends the rotation of this pulley G3 upward via a belt 3010.
The signal is transmitted to pulley G2 of No. 5.

Here, by appropriately selecting the tooth number ratio of each boob, the upper feed roller 350 side has 2 to 3 teeth than the lower feed roller 32G.
% higher rotational speed is transmitted.

(5) Upper feed roller and its transmission mechanism FIG. 18 shows an example of the structure of the upper feed roller 350 and its transmission mechanism 355.
Bearings 352A and 352B provided at the pulley G2 and rotatably hold the pulley G2, respectively.
and a slip plate provided on the shaft 351, which are a ring 354 and a pulley G fixed to the shaft 351, respectively.
As a result, the rotational movement of the motor rotation shaft is transmitted to the roller 35G via the slip plates 352A and 352B, and at this time, the recording paper P is moved to the upper feed roller 350 with appropriate tension applied thereto. It will be raised by

(6) Upper pinch roller and paper guide FIG. 17 shows an example of the configuration around the upper pinch roller 380. 3
82. , 3B2□ is a member having portions 382B for holding the pinch roller 313G at both ends thereof, and portions 382A for regulating the displacement of the recording paper P in the width direction when the recording paper P is mounted and when transport is started. One of these members is given the habit of moving in the direction of constantly pressing the pinch roller 360 toward the feed roller 350 by a spring 372 (see FIG. 11) included in the upper roller opening/closing mechanism 370, and responds to the operation of the opening/closing lever 374. to open the upper paper feed mechanism. These movements are connected to the connecting bar 3
64 to the other member 362 as well. In this state, the operator can mount the recording paper P.

At this time, the leading edge of the paper is guided and positioned at an appropriate position on the conveyance path by the guide 380 and the portion 382A.

(7) Paper feeding unit cover FIG. 18 shows an example of the configuration around the paper feeding unit cover 308, where 308A, 308B and 308C are
The output port for the recorded recording paper P (the mounting port for the flap 40G), the mounting port for the display panel 500, and the mounting port for the handle lever 1400, respectively.

410 is a flap lever for rotating the flap 400 around the shaft 412 to open and close the outlet 308A;
Reference numeral 20 denotes an opening/closing control mechanism for regulating opening/closing.

5!0 is a mounting member for mounting the display panel 500 to the mounting port 308B.

Reference numeral 71G denotes a stacker rail provided on the lower surface of the cover 308, which engages with an abutting portion (described later) when the stacker 70Gt-F and the stacker 70G are moved and positioned in the direction B. Further, 720 is a member for forming a groove for guiding the movement of the stacker 700, and a mounting portion (described later) of the stacker 700 is received in the formed guide groove.

(8) Flap opening/closing operation Fig. 19 (A) and (B) show the flap opening/closing control mechanism 4.
20, where 422 is the flap 40
This flap stay is rotatable around an axis 4G2 provided at 0, and has a bent portion 422A and a cam hole 422B. A rotor 424 is rotatable around a shaft 432 provided on a base 430 fixed to the cover 308, and has an ear portion 424A that can be engaged with the bent portion 422A and a cam hole 422.
It has a pin 424B that engages with the cam surface of B.

Figures 20 (A), (B), and (C) show a state in which the outlet port 308A is closed, a state in which the flap 400 is rotated to a predetermined position, and a state in which the flap 400 is locked and the outlet port 308A is opened. Indicates the condition.

When the flap 400 is rotated clockwise around the shaft 412 from the state shown in FIG. 4A to the position shown in FIG. The rotor 424 is rotated counterclockwise in the figure around the thick shaft 432, and the state shown in FIG. Rotate 40G in the closing direction, Fig. 20 (C)
When the rotor 424 reaches the position shown in FIG. be done. That is, at this time, the flap 400 is locked, the delivery port 308A is opened, and the recorded recording paper P can be sent out in this state. Even if the operator accidentally presses the flap 40G or vibrations occur during this delivery, since the flap OO is locked, the delivery port 308A will not be blocked.

In addition, when closing the outlet port 308, the flap 4 is removed from the state shown in FIG.
00 in the clockwise direction and positioned at the position shown in FIG. 5(B) to release the locked state, the closed state as shown in FIG. 2(A) can be obtained again.

(9) How to install the stacker FIG. 21 is a perspective view of the paper feeding unit 300 seen from below to explain how to install the stacker 700. Here, 722 is a guide groove formed by the member 720;
Reference numeral 50 indicates a mounting section of the stacker 700.

The stacker 700 is sometimes installed in the state shown in the figure.
50 into the groove 722 and then rotated 90 degrees to prevent the attachment part 750 from falling out of the groove 722 and engage the abutting part of the stacker 700 with the stacker rail 710.

In this state, the stacker 700 is movable in directions F and B in the figure, and the stacker 700 can be positioned on the F side and the B side, respectively, when the device is in use and when not in use. Therefore, when not in use, the stacker 70
0 can be stored under the paper feeding unit 3GG, so the volume of the device can be reduced.

(lO) Structure of stacker FIG. 22 shows a vertical cross-section of the stacker 700 attached below the paper feeding unit 300 when in use (when projected forward).

As shown in FIG. 22, the stacker TOO includes a support arm 701 rotatably supported on the upper part of the stacker body, and a guide member 702 attached to the support arm 701. The support arm 701 comes into contact with the front surface of the paper feeding unit 300 when the stacker is in use, and sets the guide member 702 at a predetermined position. That is, in this set state,
A downward extension line 703 of the inclined surface where the paper feed outlet is located
The guide member 702 is located on the inside. Further, the guide member 702 is formed into a curved shape. In addition, paper sending uni,)
The horizontal distance d between the vertical front surface of 300 and guide member 702 is within the range of 10 to 251 layers. According to such a configuration, continuous recording paper such as recorded fan-hold paper is sent out from the outlet and first passes through the guide member 702.
Hitting the curved part of the bow, while being reliably guided by this,
The paper falls into the stacker 700 through the gap between the guide member 702 and the front surface of the paper feeding unit 300 and is deposited there.

The reason why the distance d is numerically limited as described above is that within this range, the recording paper can be guided into the stacker extremely stably, that is, without protruding outside the stacker. Note that the guide member 702 can be rotated downward as shown in FIG. 22 and made unusable.

3.2 Paper feeding unit locking mechanism and handle lever (1) Locking mechanism FIGS. 23 and 24 respectively show the paper feeding unit 3
Lock mechanism 1420 provided on the upper and lower sides of 00 and! It is 430. Lock levers 1422 and 1432 are rotatable around shafts 1421 and 1431, respectively, and have claws 1422A and 1432A that engage with hook members provided on the recording system unit 100 side.

Spring 1423 and 1433 rotate the lock levers 1422 and 1432 in the direction of engagement, respectively. 1424 and 1434 respectively represent the axis 14
21 and the claw 1422A and between the shaft 1431 and the claw 143
2A, and these pins are connected to the handle lever 1400 via wires 1425 and 1435, respectively. Namely, the handle lever!
In response to the operation of 400, wires 1425 and 1435
When the lock levers 1422 and 1432 are pulled downward and upward, respectively, the lock levers 1422 and 1432 rotate to release the locked state between the sheet feeding unit 300 and the recording system unit 100.

(2) Handle Lever FIGS. 25 and 28 respectively show an example of the configuration of a handle lever 1400 and its transmission portion.

Here, 1401 is an operation handle, and the transmission shaft 14
It has a pin 1402 connectable to 12. 1403 is the mounting part 1403A to the handle lever mounting hole 308C
and a member having a flange portion 1403B, 1404 a sealing member provided on the flange portion 1403B, 1405 a spring for giving the member 1403 the habit of moving in the direction of the hole 308C and bringing the sealing member 1404 into close contact with the periphery of the hole 308C, and 1406 these This is a retaining ring that prevents each partial pin from falling off from 1402. That is, when the handle lever 1400 is attached, the seal member 1404
As a result, dustproofness around the hole 308C is ensured during installation.

The transmission shaft 1412 is supported by a bearing member 1414 and is rotatable in response to the operation of the handle lever 1400.

1415 is a wire connection member fixed to the transmission shaft 1412, and has pins 1418 and 1417 connected to wires 1425 and 1435, respectively.

3.3 Controller unit FIG. 27 shows an example of the configuration of the controller unit 200. In this example, the periphery of the opening 2B2 for ventilation and wiring in the top plate 280 of the controller unit is raised to form a guide section. 264 and record system 22) 10
Ink is prevented from flowing into the controller unit 200 even if there is ink leakage from the controller unit 200.

Further, a hole 266 is provided for draining leaked and accumulated ink, and a tube 828 is connected to the hole 266. The tube 826 is exposed to the outside from the side plate 270 and connected to the tube 820 so that ink flowing onto the top plate 260 is guided to the drain tank 800. This protects the inside of the controller unit 200 from ink leakage from the recording system unit 100.

In this example, the tube 82B is connected to the tube 820, but all the ink collected by the cap 140 is guided onto the top plate 280, and the ink is guided from the hole 28B to the drain tank 800 through the tube. By doing so, the configuration of the tube system can be made extremely simple.

3.4 Recovery system (1) Cap opening/closing mechanism FIGS. 28 and 29 show the closed and open states of the cap 140 with respect to the cap cover 150. Here, 141A and 141B indicate the vertical movement of the cap 140. The guide rail 142A is the cap 140
This is a holding member that holds the holder rotatably around a vertical axis and is slidable along the rail 141A. 143B is rail 1
This is a member that connects and separates the sliding member provided at 41B. Further, 825 is a waste ink reservoir provided below the cap 140, to which a tube 820 is connected.

According to this configuration, a sufficient work area is ensured during maintenance work of the cap 140, and such work becomes extremely easy. Further, according to this example, since the cap 140 is rotatable about the vertical axis, it is possible to prevent the nozzles of the head from being contaminated by color mixing of ink in the cap portion. ″ Also, in the figure, !45 is the back surface of the cap, and this back surface 145 is connected to the cam surface 34 of the pinch roller side plate 342 mentioned above.
2B so that the pinch roller 330 remains open (22) so that the lower paper feed mechanism is closed as the cap 140 moves downward when the connections 100 and 300 are made. .

(2) Cap cover FIGS. 30 and 31 are a perspective view showing an example of the configuration of the cap cover 150 and a cap 14, respectively.
FIG. cap cover
150 is given the habit of always moving toward the cap side by a spring 151. Moreover, 152 is a roller that can be engaged with the portion 14θ on the front surface of the cap 140.

These rollers 152 and the portion 149 are disengaged when the cap 140 is in a position facing the cap cover 150, and the spring 151 moves the cover 150 toward the cap 140 to cover the cap 140. Become. Thereby, the cap 140 can be protected from dryness, dust, and the like.

Also, when the cap 140 is moved, the roller 152 is moved to the portion 1.
48 and the cover 150 retreats against the spring force, so the movement of the cap 140 is not obstructed by the cover 150.

(3) Capping of the head unit The capping process for the head unit 110 can be performed by the processing procedure described later with reference to FIG. In order to obtain an appropriate and reliable engagement state at the cap position, in this example, a recess 1 is provided on the front surface of the cap as shown in FIG.
On the other hand, as shown in FIGS. 28 and 32, a protrusion 136 that can fit into the recess 146 is provided on the head unit 110 side.As will be described later, the head assembly 130 is a cap. Since the cap 140 has a tendency to move to the side, when the cap 140 faces the head unit 110 by the process described later, the convex portion 13B fits into the concave portion 146, and the movement of the cap 140 is prevented at this position, and the head unit 110 cap against 1
It is possible to obtain a state in which the 4G is accurately and reliably positioned, and it becomes possible to perform appropriate recovery processing.

3.5 Recording head assembly FIG. 32 shows an example of the configuration of the recording head assembly 130. As shown in FIG. A protrusion 134 and a protrusion 136 that can be fitted into the recess of the cap 140 are provided. Also, +3
8 is a fan for backing up the suction of the recording paper P onto the platen 382 by the fan 390F.

This head assembly 130 is attached to a movable base shown in Figure 33.

3.6 Recording head assembly in recording unit 1
33 shows the disassembled state of the support structure of the recording head assembly 130 in the recording system unit 100, 160 is a fixed base, 170 is a movable unit provided on the fixed base 160 so as to be movable relative thereto. It is a stand. A recording head assembly 130 is fixed on a movable table 170.

On the underside of the fixed base 160 is a motor for driving the movable base 170 (
A drive mechanism 180 including a pulse motor) is fixed. A screw is fixed to the tip of the motor shaft of the drive mechanism 180 via a universal screw, and a guide mechanism 181 that converts motor rotation into linear motion is coupled to this screw. This guide mechanism 181 protrudes upward from an opening 181 formed approximately in the center of the fixed base 1130, and extends a portion of the guide mechanism 181 to the movable base 1130.
Attach to the bottom of 0.

Therefore, the movable base 170 is moved by the drive mechanism 180 via this guide mechanism 181.

The drive mechanism 180 is positioned and fixed to the fixed base 1fiG, and the guide mechanism 181 is fixed to the movable base 170 so that the movable base 170 moves back and forth in a direction perpendicular to the recording surface (when set) in the paper feeding unit 300. Install.

On the upper surface of the fixing base 160, guide rails 1B2 and 163 are fixed in front and behind the opening 161. The direction of this rail coincides with the direction of movement of the movable base 170.

On the other hand, on the lower surface of the movable base 170, guide rollers 171 and 172 whose axes are perpendicular are attached to the front and rear sides. The front guide roller 171 is located inside the front guide rail 162, and the rear guide roller 172 is located inside the rear guide rail 163. Therefore, the movable base 170 is regulated by these guide rails and guide rollers, and moves to a predetermined position. move on the road.

On the upper surface of the fixed base 180, the upper portion of the roller 164 of the first receiver fixed to the lower surface thereof protrudes through an opening 185. The axis of this roller lθ4 coincides with the moving direction of the movable table 170. On the other hand, when the movable table moves forward (when moving forward to the recordable position), the first receiver is moved by the roller 16.
The second support fixes a roller 173 on the lower surface of the movable table 170 so as to face the roller 173. The axis of this roller 173 is orthogonal to the axis of the first bearing roller 164. Furthermore, the width of the front guide rail 162 is approximately equal to the diameter of the front roller 171 at its front portion, and the width of the rear guide rail 163 is approximately equal to the diameter of the rear roller 172 at its rear portion.
approximately equal to the diameter of the rear d-ra 1 in its anterior part
Therefore, when the movable platform moves forward, the front roller 171 is restrained and fixed by the front part of the front guide rail 182, and the rear roller 172
is located in front of the rear guide rail 163, so the movable base 170 can swing around the front roller 171 in a horizontal plane. In addition, at this time, the first
The receiver is a roller 164, and the second receiver roller 1 on the movable table side is placed on the roller 164.
73 is placed 'M, so by these.

The rocking motion is performed more smoothly. This swinging also causes the recording head assembly fixed to the movable table 170 to
The same assembly with the positioning front part of 130 13
0 relative to the reference surface on the paper feeding unit side can be performed extremely easily and smoothly.

On the other hand, as shown in FIG. 34, a lock mechanism 183 is fixed to the lower surface of the fixed base 160 for fixing the movable base 170 to the fixed base tea when the movable base is retreated.

The lock mechanism 183 includes a solenoid 184 and a lock lever 185 that is driven by the solenoid and rotates in a vertical plane. The lock lever 185 is
A groove 185A is formed above the rotating tip. The lock lever 185 projects toward the upper surface of the fixing base 160 through an opening 186 formed in the fixing base 1130. An engagement pin 174 is fixed to the lower surface side of the movable base 170. This engagement pin 1
74 is positioned directly above the rotating tip of the lock lever 185 when the movable base 170 is retreated. Therefore, when the movable base 170 retreats, the solenoid 18
4, the retaining pin on the movable base 170 side is engaged in the groove 185A at the rotating tip of the lock lever 185. As a result, the movable table 170 (therefore, the recording head assembly 130) is reliably fixedly supported by the fixed table 180 (for example, the recording head assembly 130 is reliably fixed to the recording head unit when transporting the apparatus, etc.).

When the recording head unit 100 and the paper feeding unit are connected, when the movable base moves forward, the positioning protrusion 132 on the front surface of the recording head assembly 130 moves as shown in FIG. 32 due to the swinging effect of the movable base 170 described above. It reliably contacts the reference surface 308B of the paper feeding unit 300.

Furthermore, in this state, the recording head assembly 1
The platen 392 is pressed by a spring force against another positioning protrusion 134 on the front surface of the printer 30, whereby the recording surface of the recording paper P regulated by the platen 392 is assembled.
130 nozzles.

4. Configuration of control system Figure 35 is a block diagram showing the electrical configuration of the entire image forming apparatus to which the present invention is applied. In this figure, He is a host that sends image information to be recorded via an optical fiber. It's a computer.

MO is a modulator/demodulator that performs mutual conversion between optical and electrical signals.

CC is a communication controller that has the function of extracting only image data from a data signal obtained from the host computer HC and sending it to the image memories INN and INS.

MP is a main processor including a CPU, and performs various controls for the entire single stirrup.

MO is a mechanical controller that includes a CPU, and in addition to communicating with the head assembly mechanism described later, it also controls the pulse motor M1 for feeding the fan fault recording paper, the DC motor N2 for moving the cap up and down, and the head assembly horizontally. Rotation control of pulse motor M3, etc. for moving back and forth is performed.

The recording head unit has four recording heads (Y, M.

C, B), and forms an image on recording paper (fan fault paper) based on image data obtained from the image memories INN and INS.At this time, ink supply and recovery processing to each part of the head are performed by the head. This takes place under the control of the assembly mechanism AM.

In this embodiment, each of the above blocks is assembled on a separate printed board. The image memory has a storage capacity of 1 megabyte including the mask and slave.

Next, referring to FIG. 38, an outline of the operation of this apparatus performed when the power is turned on will be described.

First, when the power is turned on (step st),
Each unit having a CPU (MP, MC shown in Figure 35)
, AM) performs various hardware checks such as memory check and boat status check for each unit.

Next, the main control of the entire apparatus is transferred to the main processor MP, which performs various system error checks such as ■ presence or absence of recording paper ■ presence or absence of ink ■ door opening/closing status ■ installation status of the RAD 110 on the recording head (step S
3).

As a result, if it is determined that there is no error (step S0), the online mode is set and communication with the host computer HC is enabled (step S5).

In online mode, image data sent from the host computer is stored in the image memories INN and INS.
When a predetermined amount of data has been accumulated, the cap is lowered and the head assembly is advanced to the printing position to perform printing (image formation) (step S6). Even during this printing, image data is continuously received from the host computer He. (that is, image data writing and reading are performed asynchronously), and such printing operations are repeatedly performed unless an error occurs (step S7).
).

Further, if the switch is pressed while the online mode is set in step S5, the device is disconnected from the host computer He and enters the offline mode (step S8).

Next, a test print, which will be described in detail later, is performed (step S8). The test pattern used in this test print is stored in a ROM (not shown). After printing a predetermined amount of test patterns, the test printing is automatically stopped.

Thereafter, to return the device to online mode, the switch can be pressed again (steps S8→S5).

If the occurrence of an error is detected in step S7, the device is set to offline mode (step 5I).
O), since this error is a state such as jam occurrence, out of recording paper, or out of ink, remove the causes of these errors (Step 511), press the switch to return the device to online mode (Step 512). ).

FIG. 37 is a flowchart illustrating the operation of this apparatus at the start of normal printing.

First, when the power is turned on (step 520), the recording head assembly is moved back to the home position (step 521), and then the cap is lowered (step 522).
), then the recording head assembly is advanced by a pulse motor and stopped at a print position corresponding to a predetermined number of pulses (step 523).

Then, head control for printing is performed (step 523).

FIG. 38 is a flowchart showing a control procedure for covering the front surface of the recording head assembly with a cap.

First, the recording head assembly is retreated to the home position. When the assembly reaches this home position, a predetermined output is obtained from the home position sensor (step 93G).

Next, +24V is applied to the DC motor for driving the cap to raise the cap (step 531).

When the cap rises and reaches the predetermined cap position, a sensor output is obtained to notify that fact, and at that point the voltage applied to the DC motor is changed to +5V (step 532). Balances the torque of the motor and stops it.

Thereafter, a predetermined number of pulses are supplied to the pulse motor for driving the recording head assembly, thereby moving the assembly to the cap position (step 533).

Since the tip of the recording head assembly has already penetrated into the inside of the cap, the DC motor for driving the cap is disconnected from the power source (Step S30) Thus, the cap descends under the action of its own weight and engages with the recording head assembly. The capping operation is completed when the value is 0 or more.

Next, communication between the host computer or host system and the present image forming apparatus will be explained.

9. Format and Type of Data (1) Command Data The format of command data exchanged between the host system and this image forming apparatus is as follows.

(Hereafter, extra white) Wealth B j　　　　　　 ＃　　　　　　 Sea -.

Mu 8-1 ~ IFI \de -de! +′? To 7 ″ Be 8 Tsumagiko@噸＆! Q @ Toru 薇-4@a 1to C K Paper agony Sonororo (Sake 1to koK 噸Jf-Goha 薇p ：：＝：： １ Madness ２工Σ2Σ9 Communication Protocol (1) Status The host system sends a status request command before sending command data and image data to the GGH.

The status of the CGH must be checked, but command data such as status requests (
It is not necessary when sending 'N', 'W').

The status word consists of 16 bits and has primary meaning.

(The following is a blank space) To N-+ 0 0:1 (3) In the case of image data The protocol from receiving the print start command to receiving the image data is as follows.

(Left below) 9 Communication error If the process below has been executed to the end during communication between the host system and the image forming device, the host system determines that there is an error in the communication system hardware. , treatment must be taken for recovery.

(Left below) 9. When the data transmission speed cannot keep up with the print speed, the image data sent from the host system is temporarily stored in a buffer inside the machine and then printed. When the data transmission rate from the host system cannot keep up with the printing speed and this buffer becomes empty, printing is interrupted. Printing resumes once the buffer is filled with image data. However, if the buffer is not filled with image data after three minutes, the head is capped. In this case as well, printing will resume once the buffer is filled with image data.

Next, types of errors that occur in single image forming apparatuses and their countermeasures will be described.

(Margin below) Finally, maintenance of the tree image forming apparatus will be described.

9 Switches in the card rack A switch used for maintenance is provided on a board in the card rack. The arrangement is as shown in FIG.

9 Check Print (1) Purpose of Use There are four types of test patterns that can be printed using the check print function. One of four patterns can be selected using the test pattern selector switch inside the card rack. These patterns are used for the purpose shown in FIG.

(2) How to use Check that the device is in the following conditions.

・No error has occurred.

・OFF LINE mode.

・The BUSY lamp is not lit.

・The head is capped.

・The paper feed unit is closed.

4 by the test pattern changeover switch inside the card rack.
Select one of the types of patterns.

Press the CHECK switch on the display panel.

L will be displayed on the display panel, and BLISYL
ED lights up. Check printing starts after about 15 seconds.

After the check print is completed, the machine is in OFF LINE mode and can continue normal operation if no errors occur.

9 Registration Adjustment This is an adjustment that adjusts the ink ejection position of each color to eliminate printing misalignment between each color. This is done by changing the ejection position using the registration adjustment switch and checking the printing misalignment using a test pattern (number 0).

(1) Registration adjustment switch The horizontal registration adjustment switch adjusts the printing position in the direction perpendicular to the paper feeding direction (horizontal direction), and the printing position in the direction parallel to the paper feeding direction (vertical direction). There is a vertical register adjustment switch.

a. Horizontal cash register adjustment switch One of each color is provided.

When the indicated value of the switch is increased, the print position moves to the right (when the paper feeding direction is upward).

When the indicated value of the switch is decreased, the print position moves to the left (when the paper feeding direction is upward).

It can be adjusted in the range of -7/8 m to +7/8 m in units of 178 pus.

b. Vertical registration adjustment switch Each color head is divided into two levels, upper and lower.

Each color is provided with an adjustment switch for the upper head and for the lower head. The switch for the upper head does not affect the print position of the lower head (and vice versa).

There are 2 switches each for the upper head and lower side.
Each piece is a set. One of the two is for coarse adjustment (adjustment in units of 1/2 intestinal layer), and the other one is for fine adjustment (adjustment in units of 1/32 sIm).

When the indicated value of the switch is increased, the print position moves downward (when the paper feeding direction is upward).

When the indicated value of the switch is decreased, the printing position moves upward (S if the paper feeding direction is upward).

It can be adjusted in 1/32mm increments in the range of uniaxial ■ to + (3+ 31732) ■.

FIG. 41 illustrates the above relationship.

(2) Adjustment procedure 5) Set all horizontal registration adjustment switches to standard position (7).

Muiyu 11 Set all vertical registration adjustment switches to the standard position (coarse adjustment: 8, fine adjustment: 0).

five knee r3 Set the test pattern changeover switch to 0.

5j” Jin 7’4 Press the CHECK switch to perform check printing.

5j"Near'5 Look at the broken line pattern part of the test pattern obtained in step 4.

Measure how far the cyan, magenta, and yellow color lines deviate from the black line in either direction.

52 7’6 Cyan, magenta according to the result of step 5.

Operate the horizontal registration adjustment switch for each color of yellow.

For example, if the cyan line is 2 dots (2/81 layers) to the left of the black line, turn the cyan horizontal registration adjustment switch to set it to 9.

MU11 Press the CHECK switch again to perform a check print. If the adjustment is insufficient, repeat steps 5 and 6.

If there is no longer a shift between the colors in the horizontal direction, proceed to step 8.

Look at the part of the test pattern obtained in step 7 printed by the upper head.

The focus is on the bent portion of the polygonal line pattern section and the entire straight line pattern section.

Measure how far the cyan, magenta, and yellow color lines deviate from the black line in either direction.

According to the result of step 8, operate the vertical registration adjustment switch for the upper head for each color of cyan, magenta, and yellow.

Press the CHECK switch to perform check printing.
If the adjustment is insufficient, repeat steps 8-9.

When there is no vertical shift between the colors in the portion printed by the upper head, the process proceeds to step 11.

Step 11 Look at the portion printed by the lower head of the linear pattern portion of the test pattern obtained in Step 10.

Measure how much the printed area by the lower head of each of black, cyan, magenta, and yellow is shifted from the printed area by the upper head in either direction, up or down.

According to the result of Step 11, operate the vertical registration adjustment switch for the lower head of each color of black, cyan, magenta, and yellow.

11 November CHEIII: Press the switch to perform a check print. If the adjustment is insufficient, repeat steps 11 and 12.

@ Vop adjustment The head voltage (Vo
p) differs for each recording head unit (even for the same color, it differs depending on the unit).

Therefore, when replacing the recording head unit, it is necessary to adjust the Vop according to the following steps (see Figures 42 and 4).
(See Figure 3).

φInsert the terminal of the specified digital tester into the Vop motor terminal of the replaced recording head unit (left side (black) -
1 right side (red) +).

・While pressing the Vop monitor switch, adjust the volume to the voltage value written on the top of the recording head unit.

5. Modification of recording surface forming means The recording surface positioned with respect to the recording head unit is
It can also be formed as follows.

First, in the example described above, the fan 138 provided in the assembly 130 was operated to blow air from the assembly 130 side to the platen 392 side in order to back up the adsorption of the recording paper P to the platen 392. In a modified example, the fan 138 is operated in the opposite direction so as to attract the recording paper P to the front surface of the assembly 130. In this case, on the front surface of the assembly 130, there is a horizontal line-shaped protrusion 1 arranged below the recording head 1.
The height of the No. 15 assembly 130 from the front is made higher than the height of the recording head. Further, the operation of the fan 390F for attracting the recording paper P to the platen 392 is stopped.

By doing so, the recording paper P can be attracted to the front surface of the assembly 130 by the suction action of the fan 138, and the distance between the surface of the recording paper P and the recording head can be maintained appropriately by the linear projections 115. Recording can be performed stably on the recording paper P. Furthermore, while the fan 138 continues to operate, the heater for heating the print head is controlled to keep the temperature inside the print head assembly 130 constant based on the detection result of a temperature sensor provided in the print head assembly 130.

[Effect J As explained above, according to the present invention, by ensuring that the recording medium is positioned at an appropriate position on the conveyance path in the recording medium storage section of the conveyance system, slow movement and meandering occur during conveyance. An object of the present invention is to provide an image forming apparatus that can stably transport a recording medium without causing any problems.

[Brief explanation of drawings]

FIG. 1 and FIGS. 2A and 2B are perspective views showing an example of a schematic configuration of an image forming apparatus of the present invention. FIG. 3 is a perspective view showing an example of the internal configuration of the recording system unit 100 with the paper feeding unit opened. FIG. 4 is a perspective view showing the paper feeding unit opened to explain the internal structure of the paper feeding unit, and FIGS. 5(A) to (C)
FIG. 6A is an explanatory diagram for explaining an example of the internal configuration of a controller unit, and FIGS. 6A to 6C are diagrams showing an example of a mounting operation when fanfold paper is used as a recording medium. FIG. 7 is a top view showing an example of the configuration of a display panel. FIG. 8 is a diagram for explaining the display contents of a 7-segment display. Figure 9 is a diagram showing an example of the switches and indicators installed inside the device. Figures 10 (A) to (C) are drain tank replacement procedures. Figure 11 is an example of the detailed configuration of the paper feeding unit. FIG. 12 is a diagram showing an example of the configuration of a paper deck section, and FIG. 13 is a diagram showing an example of the configuration of a lower paper feeding mechanism and a lower roller opening/closing mechanism. FIG. 14 is a diagram showing an example of the configuration of the main parts of the recording surface forming section including the platen, FIG. 15 is a diagram showing an example of the configuration of the motor unit, and FIG. 16 is an example of the upper feed roller and its transmission mechanism. A diagram showing a configuration example. FIG. 17 is a diagram showing an example of the configuration around the upper pinch roller, FIG. 18 is a diagram showing an example of the configuration around the paper feeding unit cover, and FIGS. 18 (A) and (B) are examples of the flap opening/closing control mechanism. Figures 20(A), 20(B) and CG) showing configuration examples show a state in which the outlet port is closed, a state in which the flap is rotated to a predetermined position, and a state in which the flap is locked and the outlet port is opened. FIG. 21 is a perspective view of the paper feeding unit seen from below to explain how to attach the stacker, and FIG. 22 is a vertical cross-sectional view of the stacker attached below the paper feeding unit when in use. , FIG. 23, and FIG. 24 are views showing lock mechanisms provided on the upper side and the lower side of the paper feeding unit, respectively. Fig. 25 and Fig. 2B are diagrams each showing an example of the configuration of a handle lever and its transmission part, Fig. 27 is a diagram showing an example of the configuration of the controller unit, and Figs. 30 and 31 are perspective views showing an example of the configuration of a cap cover, respectively. FIG. 32 is a diagram showing an example of the configuration of a recording head assembly. FIG. 33 is a diagram showing an exploded state of the support structure for the recording head assembly in the recording system unit, FIG. 34 is a diagram showing an example of a coupled state of a fixed base and a movable base, and FIG. 35 is a diagram showing a state in which the present invention is applied. FIG. 1 is a block diagram showing an example of the electrical configuration of the entire image forming apparatus. 38, 37rgJ, and 38 are flowcharts showing examples of the operation according to the present invention, FIG. 39 is a diagram showing an arrangement of switches, and FIG. 40 is a diagram showing an example of a test pattern. FIG. 41 is a diagram showing a registration adjustment mode, FIG. 42 is a diagram showing a structure near a monitor terminal, and FIG. 43 is a diagram showing an example of a head voltage adjustment mechanism. 100...recording system unit, 200...controller unit. 300...Paper transport unit (transport system unit),
``400...Flap, 500...Display panel, 80G...Peep window, 700...Stacker. 800...Drain tank, 900...Pocket, 1000...First optical fiber connector. 1100...Second optical fiber connector, 1200...
・Power input connector. 1300...Power output connector, 1400...Handle lever. 1500...Power switch, 110B, 1100.110M, ll0Y... Recording head unit. 120B, 120C, 120%, 120Y... Cartridge tank. 130... Recording head assembly. 14G...Cap. 15G...Cap cover, 310...Paper data 2 key unit, 32G...Lower feed roller, 330...Lower pinch roller, 340...Lower roller opening/closing mechanism, 350...Upper feed roller, 360... Upper pinch roller, 370... Upper roller opening/closing mechanism, 38G... Paper guide. 330... Recording surface forming unit, 21G... Power supply device. 220B, 220C, 220%, 220Y---Vo
p Monitor terminal, 230...Vop monitor switch, 240...Card rack, 250...Overload lamp. Engraving of the drawings (no changes to the contents) Figure 1 Figure 3 Figure 4 Figure 5 (A) Figure 6 Figure 7 Figure 8 Kukukukukuku b:) 5 to Figure 9 Figure 19 (A) ( B) Figure 20 (A) Figure 20 t8-Figure 20 (C) Figure 21 Figure 23 1432A Figure 38 Figure 39 Figure 43 Procedural amendment (method) % formula % 1. Case Indication of Patent Application No. Sho Go-85111 No. 2, Name of the invention Image forming device 3, Relationship with the case of the person making the amendment Patent applicant (10G) Canon Co., Ltd. 4, Agent Address: 5-1 Akasaka, Minato-ku, Tokyo 107 Japan No. 31 No. 6, Procedures to be amended July 18, 1980 Michibe Uga, Director General of the Patent Office 1, Indication of Case Patent Application No. 85111 No. 2, Title of Invention Image Forming Device 3, Amendment Patent applicant (100) Canon Co., Ltd. 4, Agent No. 6 Seiko Building 3rd Floor 6, 5-1-31 Akasaka, S Minato-ku, Tokyo 107, "4, Drawings of the specification subject to amendment Column 7 of "Brief explanation of the amendment", page 88, line 11 of the statement of contents of the amendment [Fig. 6 (A) to (C)]
is corrected to [Fig. 6 (A) to (D)]. Procedural amendment August 30, 1985 Michibe Uga, Commissioner of the Patent Office1, Indication of the case Patent Application No. 85111 No. 2, Title of the invention Image forming device 3, Person making the amendment Relationship to the case Patent application Person (100) Canon Co., Ltd. 4, Agent 6th Seiko Building 3rd Floor, 5-1-31 Akasaka, Minato-ku, Tokyo 107 Telephone: (03) 589-1201 (Representative) -1-(7748) Patent Attorney Tani Righteousness - “5゛・
'5. Date of amendment order. 6. Column ``3. Detailed description of the invention'' of the specification to be amended - 111~. 〆 ＼ １＼ ・“ha” pe 0) 7. Contents of the amendment 1) Change “150...cap cover” in the 14th line of the front page of page 7 of the specification to “150...cap cover (No. 28
(see figure)”. 2) In the second line of the table on page 9, "inside the acid system" is corrected to "inside the storage system." 3) Correct "380...upper pinch roller" in line 8 of the same table on the same page to "360...upper pinch roller (see Figure 17"). 4) Line 2 of page 51 of the same page Correct "when a switch" to "when a specific switch". 5) Correct "(Step Sll), S" in the 8th line of the same table to "(Step Sll), Specific S." 6) On page 80, lines 3 and 5, rCGRJ is corrected to read "image forming apparatus." 7) In the third line of page 66, "above," is corrected to "on the occasion." 8) In the same page, page 87A, lines 4 to 5, "by doing so," is corrected to "because I have decided to do so." 9) In the seventh line of the same page, correct J to "It is to provide."that's all

Claims (1)

[Claims] A bottom for depositing recording media, and a pair of holding members that face each other on both sides of the bottom so as to hold the side edges of the recording media deposited on the bottom, and one of which can move forward and backward with respect to the other. and means for moving one of the pair of holding members toward the other so that the recording medium between the pair of holding members is pressed and held by the pair of holding members. An image forming apparatus characterized by: