JPS61222774A - Image-forming device - Google Patents

Abstract

PURPOSE:To contrive a further enhancement of quality in image forming, by providing a recording means with a joint member for holding the positional relationship between the recording means and a reference surface by being jointed to the reference surface. CONSTITUTION:A recording head assembly 130 comprises recording head units 110B-110Y and cartridge tanks 120B-120Y for each of black, cyan, magenta and yellow colors, and a positioning projection provided on the front face thereof makes secure contact with the reference surface of a paper-feeding unit. Further, in this condition, a platen is pressed against another positioning projection by a spring force, and a record on a recording paper restricted by the platen is securely positioned relatively to the assembly 130. Accordingly, a further enhancement of the quality in image forming can be contrived.

Description

Detailed Description of the Invention [Technical Field] The present invention relates to an image forming apparatus, and particularly relates to a conveyance system for a recording medium in the form of continuous paper such as roll paper or fanfold paper, and a conveyance system for 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 J] As a conventional image forming apparatus of this type, there is one disclosed by the applicant in Japanese Patent Application No. 59-101508 to No. 59-101512. These connect 9 to each other.
Equipped with a recording means that has a transport 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, and connects Image forming apparatuses have been proposed in which various parts are properly positioned to form high-quality images.

In such an apparatus, it is strongly desired that the recording surface and the recording means face each other in an appropriate position.

[Objective] An object of the present invention is to maintain a proper positional relationship between the recording surface regulating member of the recording medium included in the conveying system and the recording means when the conveying system of the image forming apparatus of this type is connected to the recording means. The object of the present invention is to achieve even higher quality image formation.

〔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, the reference numerals and the names, functions, and meanings of each part correspond as follows.

(The following are blank spaces) 1.2 Inside (1) Inside of the recording system unit FIG. The names, functions, and meanings of each part correspond as follows. In addition, in this configuration, the recording head 11
0, the control system including the cartridge tank 120 is disclosed in Japanese Patent Application Nos. 58-244131 to 58-58 by the applicant, for example.
The inkjet printer disclosed in No. 244138 can be used.

(Leaving space below) (2) Inside of the paper feeding unit Figure 4 is a perspective view of the paper feeding unit 300 opened to explain the S* configuration of the paper feeding unit) 300, and shows reference symbols and names of each part. , function and meaning correspond as follows.

(Left below) (3) Inside of the controller unit Figure 5 (A) to (C) shows the controller unit 200
FIG. 2 is an explanatory diagram for explaining an example of the internal configuration of the computer. In this example, the controller unit 200 is arranged below the recording system unit 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 100, 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 FIGS. 5(A) to (C), reference symbols and names of each part,
Ja function and meaning correspond as follows.

(Margin below) 2.1; J, ii Kiuchi Misao In this section, we will explain the basic operations of each part of the device.

(1) Turn on the power 0N10FF a, ON With the paper feed unit 300 closed (the state shown in Figure 1), turn the power switch 1500 upwards.
The USY lamp lights up and each part is checked.

If there is no abnormality, the BUSY 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 is capped! 4
If 0 is not joined, it will be automatically capped.

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

If paper feeding unit) 300 is installed.

Even if the head unit 110 is not capped, it will not be capped automatically.No matter what position the cap is in, it will be considered that the cap is on, so press the Cap P/DOWN switch to close the cap. do.

b, OFF Turn the power switch 1500 downward.

(2) ON LINE mode and OFF LINE mode ON LINE mode is 0)l LINE lamp is lit, OFF LINE mode is ON L
This refers to the state in which the INE 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, paper feed, check print,
Recovery processing is possible.

Normally, 0NL is set by pressing the ON LINE switch.
INE mode and OFF LINE mode can be switched, but in any of the following states, OFF LIN mode
It is assumed that switching from E mode to ON LINE mode is not possible.

-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 FIGS. 6(A) to 6(G) show examples of mounting operations when fanfold paper is used as the recording medium.

・Make sure the power is turned on.

- Check that the flap 400 is open.

O Open the paper feeding unit 300.

1. 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)).

・Paper P is moved between lower feed roller 320 and lower pinch roller 33
0 (Fig. 6(C)).

- While opening the upper roller 350, pass the 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 TOF mark is not 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, the first digit 552 of the three digits is the status display section that displays the status, and the bottom two digits 554 are the status display section that displays the error content. Used as an error display section.

It is assumed that a display as shown in the figure is made in response to the status and error. Furthermore, decimal points 555°, 558, 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 disposed inside the equipment. Here, the reference numbers and names of the switches, their functions and correspondence with when they are enabled, and the display 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.

- 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.

・Press the cap UP/DOWN switch 11 to lower the cap 140 that protects the head unit 110 (once you press it, the cap will fall to the normal position even if you release your hand).

- Pull out the cartridge 12G.

- Insert the correct cartridge. Cartridge 120
B, 1200.120%, 120Y arrangement is black from the left,
They are cyan, magenta, and yellow.

-Press the cap UP/DOWN switch 11 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(G) show an example of a procedure for replacing the drain tank 800, and the process can be performed as follows.

d. Loosen the screw 852 (Fig. 10(A)).

b. Raise the lever 854 (Fig. 10(A)).

C. Pull up the drain tank 800 (Fig. 10 (
B)).

d. Pull out the drain tank cap 840 (first O
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 a 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 paper feeding unit (Figure 11 shows the paper feeding unit) In figure 0 showing an example of the detailed configuration of 300, first 302 is attached to the base;
Each part inside the paper feeding unit 300 can be assembled around this base 302. 30B is recording unit 1
This panel faces the unit 100 when connected to the unit 100, and exposes the paper deck section 310, lower and upper paper feeding mechanisms, their opening/closing mechanisms 340, 370, platen 382, etc. through the window 306A.
The opposing surface 306B serves as a gap reference surface for a head unit 11O, which will be described later.

302A and 302B are parts having a rotation axis for rotating the paper feeding unit 300 relative to the recording system unit (IQQ). 1450 is recording unit 10
A sensor 1420 for detecting the bonding with 0 is a locking mechanism to ensure the bonding.

Further, 3000 is a motor unit for driving the rollers 320 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 section 310 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 serves as a reference surface for initially regulating the conveyance path;
Bottom plate 3 provided with a convex portion 311B to obtain a stable stacking state of paper even during opening/closing operations of 100
11C, etc., the bottom plate 311C is tilted toward the back side 31111 (the side opposite to the paper mounting side) so that the recording paper hangs on the back side 3110.

Thereby, it is possible to 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 311A by a spring 314 stretched between it and the stacking section 315 and biased in the downward direction in the figure.

Further, 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 row'y 330 for pressing the recording paper P against the lower paper feed roller 320 is provided with an elastic member 332 near the center in the axial direction. Ensure that a clamping condition is obtained.

341 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 344
The pinch roller 330 is supported by the arm portion 344A, and a spring 34B is stretched between the other arm portion 344B and the upright portion 342A of the side plate 342.
Obtain the pressing force against the feed roller 320 of 0. 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 one-sheet deck portion 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 bottle 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 pin provided on the base 302.
Provide B. Moreover, by tensioning the spring 349 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 state of engagement is 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 accordance with the engagement, and the feed roller 320
and the pinch roller 330.

As a result, even if the operator forgets to close the lower paper feed mechanism after loading the recording paper P, the cap (described later) can be used. As the lower paper feed mechanism closes with the movement of 40,
In this part, it becomes possible to prevent the recording paper P from jamming or the like.

(3) Recording Surface Forming Section FIG. 14 shows an example of the configuration of the main parts of the recording surface forming section 390 including the platen 392. Here, 393 is the platen 3
92, and the fan 3 is connected through this hole 393.
The recording paper P is attracted to the platen surface by 80F to form a recording surface. 395 is the base 302 and panel 30B
394 is a spring mounting portion provided on the platen 392; 398 is a spring for swinging the platen against the base 30;
This is a guide hole for a pin 308 protruding from 2. Also, 3
97 is a sensor that detects recording paper.

As will be described later, when the recording system unit 100 is connected to the paper feeding unit 300, the bin 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 and the head unit 300 is connected. y) The nozzle of 110 and the reference plane are kept parallel. At the same time, the platen 392 follows the rocking of the assembly 13G via a projection provided on the assembly side by the spring 395, so that the recording surface of the recording paper P regulated by the platen 392 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 to the pulley G20 associated with the roller transmission mechanism 325 that sends it downward via the pulley 300B and the bell 3008. G3 is concentric with pulley G20 and pulley G2
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, select the tooth number ratio of each pulley appropriately.

A rotation speed approximately 2 to 3% higher than that of the lower feed roller 320 is transmitted to the upper feed roller 350 side.

(5) Upper feed roller and its transmission mechanism FIG. 16 shows an example of the structure of the upper feed roller 350 and its transmission mechanism 355, where 353 is the extension shaft 3 of the roller 350.
Bearings 352A and 352B provided in 51 and rotatably holding pulley G2 are respectively connected to pulley G2.
2 and a slip plate provided on the shaft 351, which slide on a ring 354 and a pulley G2 fixed to the shaft 351, respectively.Thereby, the rotational movement of the motor rotating shaft is transmitted through the slip plates 352A and 352B. At this time, the recording paper P is pulled up by the upper feed roller 350 under appropriate tension.

(6) Upper pinch roller and paper guide FIG. 17 shows an example of the configuration around the upper pinch roller 380. 3
Reference numerals 821 and 3822 designate members having portions 382B for holding the pinch roller 380 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 loaded and at the start of conveyance.

One of these members is given the habit of moving in the direction of constantly pressing the pinch roller 360 toward the feed roller 35G by a spring 372 (see the first figure) included in the upper roller opening/closing mechanism 370, and when the opening/closing lever 374 is operated. Open the upper paper feed mechanism accordingly. These movements are carried out by the connecting bar 36.
4 to the other member 382 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 362A.

(7) Paper feeding unit cover FIG. 18 shows an example of the configuration around the paper feeding unit cover 308, where 3o8a, 3o8B and 308C are
The output port for the recorded recording paper P (the mounting port for the flap 400), 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;
420 is an opening/closing control mechanism that regulates opening/closing thereof.

510 is a mounting member for mounting the display panel 500 to the mounting opening 308B.

A stacker rail 710 is provided on the lower surface of the cover 308, and engages with an abutting portion (described later) when the stacker 700 is moved and positioned in directions F and B. Also,
Reference numeral 720 is a member for forming a groove for guiding the movement of the Star 2 cuff 00, and a mounting portion (described later) of the stacker 700 is received in the formed guide groove.

(8) Flap opening/closing operation Fig. 13 (A) and (B) show the flap opening/closing control mechanism 4.
20, where 422 is the flap 4
It is a flap stay that can rotate around a shaft 402 provided in 00, 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 42.
It has a pin 424B that engages with the cam surface of 2B.

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 rotates counterclockwise in the figure around the shaft 432, and reaches the state shown in FIG. When the rotor 424 is rotated in the closing direction and reaches the position shown in FIG. Rotation of 400 (counterclockwise in the figure) is prevented. That is, at this time, the flap 40
0 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 pushes the flap 400 or vibrations occur during this delivery, the flap 400 is locked, so the delivery port 308A will not be blocked.

When closing the outlet port 308A, remove the flap 4 from the state shown in FIG. 20(C) by reversing the procedure described above.
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 750 indicates an attachment part for the stacker 700.

The stacker 700 is sometimes installed in the state shown in the figure.
50 into the groove 722 and then rotated 80 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 stuff cuff 00 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 not in use. Therefore, when not in use, the stacker 70
0 can be stored under the paper transport unit 300, so the volume of the device can be reduced.

(10) 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 700 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 used, and sets the guide member 7G2 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 in a straight line shape. In addition, paper sending uni,)
The horizontal distance d between the vertical front surface of the guide member 702 and the guide member 702 is within the range of 10 to 25 layers. According to such a configuration, for example, the continuous recording paper such as the recorded fan hold paper is sent out from the outlet and first passes through the guide member 70.
While being reliably guided by the curved portion of No. 2, 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 lock mechanism and handle lever /
<- (1) Lock mechanism FIGS. 23 and 24 respectively show the paper feeding unit 3.
Lock mechanisms 1420 and 1430 are provided on the upper and lower sides of 00. 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 142
1 and the claw 1422A and between the shaft 1431 and the claw 1432
These pins are connected to the handle lever 1400 via wires 1425 and 1435, respectively. That is, the handle lever 14
When the wires 1425 and 1435 are pulled downward and upward, respectively, in response to the operation of 00, the lock levers 1422 and 1432 rotate to lock the paper feeding unit 300 and the recording system unit 100. It will be canceled.

(2) Handle Lever FIGS. 25 and 26 respectively show an example of the configuration of the handle lever 1400 and its transmission portion.

Here, 1401 is an operation handle, and a transmission shaft 141
It has a pin 1402 that can be connected to 2. 1403 is a member having a mounting portion 1403A to the handle lever mounting hole 308C and a flange portion 1403B, 14o4 is a sealing member provided on the flange portion 1403B, and 1405 is a member 1403 having a habit of moving in the direction of the hole 308C so that the sealing member 1404 is attached to the hole 308C. The spring 1408 is a retaining ring that prevents these partial pins from falling off from the periphery of the pin 308C. That is, when the handle lever 1400 is attached, the seal member 140
4, 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.

A wire connecting member 1415 is fixed to the transmission shaft 1412, and has pins 141B and 1417 that connect 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 262 for ventilation and wiring in the top plate 260 of the controller unit is raised to form the guide portion 264. forming a recording unit) 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 82B is connected to the hole 266. The tube 82B is exposed to the outside from the side plate 270 and connected to the tube 820 so that ink flowing onto the top plate 280 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 826 is connected to the tube 820, but all the ink collected by the cap 140 is guided onto the top plate 260, and the ink is guided from the hole 266 through the tube to the drain tank 800. 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 a member that connects and separates the sliding member provided on the rail 141B. 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.

Further, in the figure, 145 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 when the units lOO and 300 are connected while the pinch roller 330 is open, the lower paper feeding mechanism is closed as the cap 140 moves downward.

(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 a habit of always moving toward the cap side by a spring 151. Moreover, 152 is a roller that can be engaged with a portion 149 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.
49 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 convex portion 13111 that can fit into the four portions 146 is provided on the head unit 110 side, and a head assembly 130 as described later. Since the convex portion 136 is given a tendency to move toward the cap side, when the cap 140 faces the head unit 110 by the process described later, the convex portion 136
is inserted into the recess 14B, and movement of the cap 140 is prevented at this position, and a state in which the cap 140 is accurately and reliably positioned with respect to the head unit 110 can be obtained, and an appropriate recovery process can be performed. becomes.

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 136 that can be fitted into the protrusion 134 and the recess of the cap 140 is provided, and a protrusion 138 is provided.
is a fan for backing up the suction of the recording paper P onto the platen 392 by the fan 390F.

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

3゜6 Recording head assembly in the recording system unit 1
33 shows the supporting structure of the recording head assembly 130 in the recording system unit 100 in an exploded state. 180 is a fixed base; 170 is a movable base provided on the fixed base 180 so as to be movable relative thereto. 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 joint, 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 160, and extends a portion of the guide mechanism 181 to the movable base 160.
Attach to the bottom of 0.

Therefore, the drive mechanism 1
80 moves the movable base 170.

The drive mechanism 180 is positioned and fixed to the fixed base 160 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.
The guide mechanism 181 is attached to the movable base 170.

On the upper surface of the fixing base 160, guide rails 182 and 183 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 table 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 1132, and the rear guide roller 172 is located inside the rear guide rail IH. move on the road.

On the upper surface of the fixed base 160, a first receiver fixed on the lower surface thereof has an E side portion of a roller 164 protruding through an opening 165. The axis of this roller 184 coincides with the direction of movement of the movable table 170. On the other hand, when the movable table moves forward (when moving forward to the recording position), the first receiver is moved by the roller 16.
The second support fixes a roller 173 on the underside of the movable base 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. Further, 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 1 [13] is approximately equal to the diameter of the front roller 171 at its rear portion.
2, with a rear roller at its front.
172. Therefore, when the movable platform moves forward, the front roller 171 is larger than the diameter of the front guide rail 1B2.
is restrained and fixed by the front part of the rear roller 17
2 is located in front of the rear guide rail 163, the movable base 170 can swing around the front roller 171 in a horizontal plane. In this case, the first receiver on the fixed base side is on the roller 164, and the second receiver on the movable base side is on the roller 164.
173, the rocking motion can be performed more smoothly. Moreover, this swinging makes it extremely easy to position the recording head assembly 130 fixed to the movable base 17G with respect to the paper feeding unit side reference surface using the positioning front part of the recording head assembly 130.
It can be done smoothly.

On the other hand, as shown in FIG. 34, a locking mechanism 183 is fixed to the lower surface of the fixed base 160 for fixing the movable base 170 to the fixed base 160 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. Locker/<-185 forms a groove 185A on the upper side of its rotating tip. lock lever
185 projects to the upper surface side of the fixing base 160 through an opening 166 formed in the fixing base 160. An engagement bin 174 is fixed to the lower surface side of the movable table 170. This retaining pin 174
is positioned directly above the rotating tip of the lock lever 185 when the movable table 170 is retreated. Therefore, when the movable base 170 is retreating, the solenoid 184 is operated to engage the engagement pin on the movable base 170 side into 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 securely supported by the fixed table 160 (for example, when transporting the apparatus, the recording head assembly 130 is fixedly supported).
130 to the recording head unit).

When the movable base 100 is connected to the paper feeding unit and the movable base 17 moves forward, the movable base 17 described above moves forward.
Due to the rocking effect of 0, the positioning protrusion 132 on the front surface of the recording head assembly 130 is
contacts the reference surface 306B of the paper feeding unit 300 reliably. Furthermore, in this state, the recording head assembly! The platen 332 is pressed against another positioning protrusion 134 on the front surface of the assembly 30 by a spring force, whereby the recording surface of the recording paper P regulated by the platen 392 is reliably positioned with respect to the nozzle of the assembly 130.

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.

M[ ] is a modulator/demodulator that performs mutual conversion between optical signals and electrical signals.

The CC communication controller has the function of extracting only image data from the data signal obtained from the host computer HC and sending it to the image memory IN and IMS.

MP is a main processor including a CPU, and performs various controls of the entire device.

MC 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 used to send the fan fault recording paper, the DC motor M2 used to move the cap up and down, and the head assembly horizontally. The rotation of the pulse motor N3 and the like for moving back and forth is controlled.

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

C, B), and forms an image on recording paper (fan fault paper) in the image memory IN based on the image data obtained from the INS.At this time, ink supply to each part of the head, recovery processing, etc. This takes place under the control of the mechanism AM for the helad assembly.

In this embodiment, each of the blocks described above 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. 36, an outline of the operation of the apparatus performed when the power is turned on will be described.

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

Next, main control of the entire device is transferred to the main processor 2 MP.

- Check the presence or absence of recording paper, the presence or absence of ink, the opening/closing status of the door, the installation status of the recording head 110, etc. (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 IC is enabled (step S5).

In online mode, image data sent from the host computer is stored in the image memories INN, I
When a predetermined amount of data has been accumulated in the MS, the cap is lowered, the head assembly is advanced to the printing position, and printing (image formation) is performed (step S6). Even during this printing, image data is continuously transferred from the host computer HC. Such printing operations are performed repeatedly 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 HC and enters the offline mode (step S8).

Next, a test print, which will be described in detail later, is performed (step S9). 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 91).
G), since this error is a state such as a jam occurring, the recording paper is out, or there is no ink, the causes of these errors should be removed (step 511), and the switch is pressed 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 retracted 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 923).

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 530).

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 534).

Thus, the cap lowers under its own weight and the cap action is completed by zero or more engaging the recording head assembly.

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.

(Left below) 1 Tomoe Tomoe ζ Ku) S'1 Sugi 'J-'J- 8 To 8-1 to N1\0 (To 7! + ℃ Se paper '7 Pe 8 Image formation from the host system The types of command data sent to the device are as follows.

MEANING
C0DE 0PERAN
口5tart print P
print 5peedstop print
tE-top o
f farm H-feed
F-5tatus r
equest to -5en
d command again N
-transmission error
W
-1nitializa system
I-The types of command data sent from the image forming apparatus to the host system are as follows.

MEANING C0DE
QPERANtlcommand/date rec
eived A
5tatus information Amatushi■ send command again
N-protocol error
X
5tatus info high ≠ 狽奄 ■ (2) Image data The format of the image data is as follows.

<FLAG><CLASS><H><DH><yelI
aw image data (111 words
)xllT>(DH)<magenta image
data (111 words)) (DT) DH〉
Kucyan image data (111
words)xDT)kuDHxblack im
age data (111 words)xDTxFc
The meaning of the s= symbol is as follows.

MuJ+J+7++t-J-Mumu9 Communication protocol (1) Status Before the host system sends command data and image data to the CGH, it must send a status request command and check the status of the GGH.However, command data such as status requests must be sent. ('M', 'N',
'W') is not required when sending.

The status word consists of IB bits and has the following meaning:

(The following is a margin) Toichi C'J-+ (+ a: I n Tin V (3) In the case of image data The protocol from receiving a print start command to receiving 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. 1. Treatment must be taken for recovery.

(Left below) Image forming device Host system [Error detection] [Edge detection] [Error detection] NI °1 [Error detection] 9 Image data sent from the host system when the data transmission speed cannot keep up with the print speed 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 is resumed once the buffer γ 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 this 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 4 types of patterns can be selected using the test pattern changeover 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 BUStY lamp is not lit.

The cap is on for the life of me.

・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 BUSYLE
D 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.

Winter 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 O).

(1) Registration adjustment switch Two horizontal registration adjustment switches adjust 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 to adjust.

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).

1/8 intestine 17/8 layer 1~+? /8 Can be adjusted within the range of s layer.

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 12 to the top and 7 to the bottom.
Each piece is a set. One of the two is for coarse adjustment (adjustment in units of 1/2m1), and the other one is for fine adjustment (adjustment in units of 1/32mm).

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 print position moves upward (when the paper feeding direction is upward).

l/32 ■One axis per serving l~+(3+ 31/32)■
■Can be adjusted within the range.

FIG. 41 illustrates the above relationship.

(2) Adjustment procedure 2 Set all horizontal registration adjustment switches to reference position N (7).

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

59 Yul” Set the test pattern changeover switch to 0.

Press the CHECK switch 2 to print a check.

Ward j2 LA1 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.

According to the result of step 5, operate the horizontal registration adjustment switch for each color: cyan, magenta, and yellow.

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

Operation 11 C) Press the IECK 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 portion 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.

Stand L and 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.

Now look at the part printed by the lower head of the straight line pattern part 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.

Press the CHECK switch to perform check printing.
If the adjustment is insufficient, repeat steps 11 and 12.

9 Vop adjustment Set 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).

- Insert the terminal of the specified digital tester into the Vop monitor terminal of the replaced recording head unit (left side (black) -
9 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 toward the platen 332 side in order to back up the adsorption of the recording paper P to the platen 382. 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 are horizontal linear protrusions 1 arranged above and below the recording head.
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 380F for attracting the recording paper P to the platen 382 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, when the transport system and the recording means are connected, the recording surface regulating member of the recording medium of the transport system is maintained in an appropriate positional relationship with the recording means. With this, even higher quality image formation can be achieved.

[Brief explanation of drawings]

1, 2 (A) and 2 (B) are perspective views showing an example of the schematic structure of the image forming apparatus of the present invention, and FIG. 3 is a paper feeding unit showing an example of the internal structure of the recording system unit 100. FIG. Fig. 4 is a perspective view showing the paper feeding unit opened to explain the internal structure of the paper feeding unit, and Fig. 5 (A) to CC)
is an explanatory diagram for explaining an example of the internal configuration of the controller unit, ・Figures 6 (A) to (C) are diagrams showing an example of mounting operation when using fanfold paper as a recording medium, and Figure 7 is a display FIG. 8 is a plan view showing an example of the configuration of the panel; FIG. 8 is a diagram for explaining the display contents of the 7-segment display; FIG. 9 is a diagram showing an example of the switches and display provided inside the device; Figures (A) to (C) are diagrams showing an example of a drain tank replacement procedure. Fig. 11 is a diagram showing an example of the detailed configuration of the paper feeding unit, Fig. 12 is a diagram showing an example of the configuration of the paper deck section, and Fig. 13 is a diagram showing an example of the configuration of the lower paper feeding mechanism and the lower roller opening/closing mechanism. FIG. 814 is a diagram showing an example of the configuration of the main parts of the recording surface forming section including the platen, and FIG. 15 is a diagram showing an example of the configuration of the motor unit. FIG. 16 is a diagram showing an example of the configuration of the upper feed roller and its transmission mechanism. 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 Fig. 13 (A) and CB) is an example of the flap opening/closing control m mechanism. A diagram showing a configuration example. Figures 20 (A), (B) and (C) are diagrams respectively showing a state in which the outlet 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 is opened; Fig. 21 is a perspective view of the paper feeding unit seen from below to explain how to attach the stacker, Fig. 22 is a longitudinal cross-sectional view of the stacker attached below the paper feeding unit when in use, Fig. 23, and FIG. 24 is a diagram showing the locking mechanism provided on the L side and the lower side of the paper feeding unit, respectively. FIGS. 25 and 26 are diagrams each showing an example of the configuration of the handle lever and its transmission part. FIG. 27 is a diagram showing an example of the configuration of the handle lever and its transmission part. FIGS. 28 and 29 are views showing a closed state and an open state of the cap relative to the cap cover, and FIGS. 30 and 31 are perspective views showing an example of the structure of the cap cover, respectively. 32 is a diagram showing an example of the configuration of the 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, and FIG. 34 is a diagram showing an exploded state of the support structure of the recording head assembly in the recording system unit. FIG. 35 is a block diagram showing an example of the electrical configuration of the entire image forming apparatus to which the present invention is applied; FIGS. 36, 37, and 38 are diagrams showing the operation according to the present invention. Flowchart showing an example; FIG. 39 is a diagram showing an arrangement of switches; Fig. 40 is a diagram showing an example of a test pattern, Fig. 41 is a diagram showing a register adjustment mode, Fig. 42 is a diagram showing a structure near the monitor terminal, and Fig. 43 is a diagram showing an example of a head voltage adjustment mechanism. be. 100...Recording unit. 200...Controller unit 2, 300...Paper feeding unit (conveying system unit), 400...Flap, 500...Display panel, 600...Peep window, 700...Stacker, 800... ...Drain tank, 90G...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, 1100.110%, ll0Y... recording head unit, 120B, 120C, 12011, 12
0Y... Cartridge tank, 130... Recording head assembly, 140... Cap, 150... Cap cover, 310... Paper deck section. 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. 380...paper guide, 3i30...recording surface forming section. 210...Power supply device. 2208.220C, 220M, 220Y ・-Vap
Mil monitor, 230...Vop monitor switch, 240...card rack. 250...Overload lamp. Engraving of drawings (no changes in content) Figure 1 Figure 3 Figure 4 Figure 5 (A) Figure 6 Figure 7 Figure 8 Kukukuku Kuku b Kukuf Figure 9 Figure 1O (A) Figure 19 (A)
(B) Figure 20 (A) Figure 20 (B) Figure 20 (C) Figure 27 Figure 23 1432A Figure 38 Figure 39 Figure 42 Figure 43 Procedure auxiliary device (method) % formula % 2 , Name of the invention Image forming device 3, Person making the amendment Relationship to the case Patent applicant (100) Gyanon Co., Ltd. 4, Agent 6th Seiko Building 3rd floor, 5-1-31 Akasaka, Minato-ku, Tokyo 107 Japan (03) 589-1201 (Representative) (7748) Patent Attorney Yoshi Tani - 5, Date of amendment order Voluntary 6, Supplementary procedural device subject to amendment July 18, 1985 Director General of the Patent Office Michibu Uga 1 , Indication of the case Japanese Patent Application No. 80-65103 2 Name of the invention Image forming device 3 Person making the amendment Relationship to the case Patent applicant (100) Canon Co., Ltd. 4 Agent Address: 5 Akasaka, Minato-ku, Tokyo 107 Japan No. 1-31 Chome, 6th Seiko Building, 3rd Floor 6, Column 7 of “4. Brief Explanation of Drawings” of the specification subject to amendment, “Figure 6 ( A) ~ (C)”
1. Corrected to 1 Figure 6 (A) to (D). Procedure auxiliary device August 30, 1985

Claims (1)

[Scope of Claims] Recording means for recording an image on a recording medium; urging means for imparting a movement habit to the recording means on a reference surface related to the recording surface of the recording medium during the image recording; An image forming apparatus comprising: a joining member provided on a recording means and joined to the reference surface to maintain a positional relationship between the recording means and the reference surface.