JPH03132756A - Image forming device - Google Patents

Abstract

PURPOSE:To obtain a color image that is currently developed and heat-fixed even if a mask original plate is jammed by stopping only a mask original plate carrying means if the mask original plate is jammed. CONSTITUTION:A light- and pressure-sensitive recording paper 50 coated with a dye precursor material and a developing paper 60 to which a developer reacting to the dye precursor material and coloring is applied are employed. After mask original plates 15R, 15G and 15B split in terms of color are closely bonded with the light- and pressure-sensitive paper 50 to be exposed, the paper 50 is overlapped on the developing paper 60 to be pressure-developed. This image forming device includes a means 31a carrying mask original plates 15R, 15G and 15B, a means detecting jams of the mask plates, and means 71 and 83 carrying the developing paper. If the mask original plates are jammed, only the carrying means 31a for them is stopped to continue the operations of the carrying means 71 and 83 for the developing paper. Thus, an image on the already exposed paper is output.

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to an image forming apparatus.

[Prior Art] Conventionally, in an image forming apparatus, red, green, and blue mask originals are conveyed to an exposure position, and then exposed to a photosensitive recording medium.
Eject the mask original. After exposure of three colors, the photosensitive recording medium was wound up, the photosensitive recording medium and the developer sheet were subjected to pressure development, and the developer sheet was heat-fixed to obtain a color image. In addition, during continuous printing, the photosensitive recording medium is fixed between the exposure position and the development position, so the transport of the mask original,
Color images were obtained at high speed by simultaneously performing exposure, pressure development of the color developer sheet, and heat fixing.

[Problems to be Solved by the Invention] However, when the mask original plate causes noise, the image forming apparatus is stopped in order to prevent damage to the mask original plate, so it is difficult to obtain a color image during development and heat fixing at that point. I couldn't do it.

[Object of the Invention] The present invention has been made to solve the above-mentioned problems, and by stopping only the mask original conveying means when the mask original is jammed, it is possible to prevent the mask original from jamming. Forces during mutual development and heat fixing 2-
The purpose is to make it possible to obtain images.

[Means for Solving the Problem] In order to achieve this object, the image forming apparatus 1 of the present invention,
Light-sensitive and pressure-sensitive recording paper coated with a dye precursor (50)
Using color developer paper (60) on which a color developer that reacts with the dye precursor and develops color is attached, the three-color separated mask original plate (15R, 15G, 15B) is transferred to photosensitive pressure-sensitive recording paper (50).
In an image forming apparatus in which the developer paper (60) and the light-sensitive pressure-sensitive recording paper (50) are overlapped and developed under pressure after close contact transmission exposure, the mask original plate (15R, 15G, 15B) is used.
means (31a) for conveying the paper, means (Jam) for detecting a jam of the mask original, and means (31a) for conveying the developer paper (31a);
71, 83), and is characterized in that when the mask original is jammed, only the mask original conveying means (31a) stops operating, while the developer paper conveying means (71, 83) continues to operate.

[Function] In the present invention having the above configuration, when the jam detecting means detects a jam of the mask original, only the means for conveying the mask original is stopped. However, since the means for conveying the color developing paper continues to operate, other processing such as development continues. Therefore, if the exposure process has already been completed, the image is output.

[Embodiment J] Hereinafter, an embodiment embodying the present invention will be described with reference to the drawings.

FIG. 1 is a sectional view of a monochrome laser printer 1 and a color image recording device 20 in a combined arrangement.

First, a laser printer 1 is mounted on top of a color image recording device. A polygon scanner 2 in a laser printer 1 draws an electrostatic latent image by irradiating a charged photoreceptor 3 with laser light. The photoreceptor 3 on which the electrostatic latent image has been formed is developed by a developing device 4, and the toner image is transferred onto plain paper or an OHP sheet fed from a paper feed cassette 5, and fixed by a fixing device 6. Typically, the monochrome laser printer 1 records data transmitted from a host computer.

The output from the laser printer 1 is sent to the paper output tray 11 or 12 if a black and white image is required in the paper path switching section 10, and is sent to the paper output tray 12 if a color image is required. Thereafter, the image is taken into the color image recording device 20.

The distal end side of the paper output tray 12 is rotatable between the position shown by the solid line and the position shown by the chain line in FIG. The paper is taken into the color image recording device 20, and the three sheets of monochrome printed paper output from the laser printer 1 are used as one mask master plate 15 (15R, 15G, 15B) of the color image recording device 20. be done.

Next, the configuration of the color image recording device 20 will be explained.

That is, in the upper part of the main body of the force 2-image recording device 20, there is located a mask original conveying device 21 in which an alignment device 31, a circulation guide 25, and two storage sections 26 and 27 located in parallel are connected in an annular manner. ing. The alignment device 31 of the mask original conveying device 21 and the storage portions 26 and 27 are connected to the discharge tray 12 of the monochrome laser printer 1 via the guide member 22, so that the output tray 12 of the monochrome laser printer 1 A sheet of paper (mask original) is introduced into the mask original transport device 21 . Further, a date 23 is arranged in the mask original conveying device 21 below the guide member 22, and the date 23 allows the mask original 15 that has been guided and conveyed by the guide member 22 to be placed on the alignment device 31 side. Alternatively, the paper can be distributed to the paper discharge tray 30 side. In addition, a circulation guide 25 and two storage g26.27
Date 28 is placed between
The mask originals 15 that have been guided and conveyed by the circulation gamma guide 25 are distributed to either the upper storage section 26 side or the lower storage section 27 side.

On the other hand, the mask original 15 inserted from the manual feed tray 29 is guided into the mask original transport device 21 via the date 24.

Inside the mask original transport device 21, there is a mask original paper feeding sensor 101 for checking the presence of the mask original 15. There are v-screen original paper discharge sensors 102a and 102b. Further, the mask original transport device 21 is driven by a drive source M1 (not shown). Further, Sl is a signal that becomes 1 while the mask original plate 15 passes through the mask original paper feed sensor 101;
In S2, the mask original 15 is connected to the mask original discharge sensor 102.
This is a signal that becomes 1 while passing through.

The alignment device 31 processes a belt 31a made of a light-transmitting dielectric material (for example, polyethylene tele-7 tarley: PET) into an endless shape, and stretches it between two rotating shafts. It is configured. At least one of the two shafts is rotationally driven by a motor (not shown), and as the pongee is rotated, the bell 31a is driven to circulate in the direction shown by the arrow in FIG. The surface of the bell 31a is charged by a charging device (for example, a corotron), not shown, so that the mask original 15 is attached by electrostatic adsorption force. Further, a sensor for alignment is provided near the belt 31a, and is configured to read alignment marks printed at predetermined positions on the mask original plate 15 and set the mask original plate 15 at a predetermined position. It is composed of

An exposure device 41 is arranged above the alignment device 31, and the exposure device 41 is movable in the left-right direction along the alignment device 31.

The exposure device e41 includes a linear white light source (hereinafter simply referred to as a lamp) 42 and a reflection plate 43 that reflects light from the lamp 42.
and arranged to surround the lamp 42 and the reflector 43,
The color separation filter 44 includes a red filter 44R, a green filter 44G, and a blue filter 44B.

The photosensitive recording medium 50 is, for example, disclosed in Japanese Patent Application Laid-Open No. 62-14304.
The main material is a photocurable resin using a photopolymerization initiator known in Publication No. 4, and contains a photocurable resin that hardens when exposed to light of each wavelength of red, green, and blue, and cyan and magenta. , yellow dye precursors are coated on a base sheet. The photosensitive recording medium 50 is housed in a cartridge 51 so as not to be exposed to light. The photosensitive recording medium 50 pulled out from the cartridge 51 is placed between the bell) 31a and the exposure table 52.
After passing through the gap, the fixed roller 56 and the slack remover 5
5. The film passes through the movable gamma side 64, the pressure developing device 70, and the drive roller 57, and is then wound onto the winding roller 54. When the exposure table 52 is exposed by the exposure device 41, the cam 5
3, thereby bringing the mask original 15 conveyed by the belt 31a into close contact with the photosensitive recording medium 50. Further, the fixed roller 56 clamps and fixes the photosensitive recording medium 50 that has been opened and exposed and is subjected to development processing in the pressure development device 70 . Furthermore, a slack removing device 55
The drive a-257 prevents the photosensitive recording medium 50 from sagging while the development process is performed in the pressure development device 70.
The photosensitive recording medium 50 can be fed at a constant speed.

The color developer sheet 60 is manufactured by EVA special fq@5B-8.873.
It is constructed by coating a base paper with the developer disclosed in Japanese Patent No. 9, and is set in a cassette 61 so that the developer-coated surface faces downward.

The developer sheet 60 is fed to the cassette 6 by a paper feed row 262 that is intermittently driven by a drive source (not shown).
The sheets are taken out one by one from No. 1 and supplied to the pressure developing device 70. Then, the color developer sheet 60 is pressed by a pair of pressure rows 271 of the pressure developing device 70 in a state where it is overlapped with the exposed photosensitive recording medium 50. The latent image formed is visualized on the developer sheet 60.

The heat fixing device 80 includes a heat roller 82 having a built-in heater 81.
, auxiliary roller 85, its heat roller 82 and auxiliary roller 85
The developing color is extracted from the depletion roller 83 which is pressed against the heat roller 282 via the endless belt 84 and the endless belt 84 installed between the two, and is guided and conveyed by the movable guide 64 from the pressure developing device 70. After the agent sheet 60 is polished by the heat fixing device 80, the color developer paper discharge sensor 103 is ONL for a certain period of time, and then the agent sheet 60 is discharged onto the paper discharge tray 63. In the color image recording apparatus 20, components other than the mask original conveying device 21 are driven by a drive source M2 (not shown). Further, S3 is a signal that becomes 1 while the color developer sheet 60 passes through the color developer paper discharge sensor 103.

The operation of the device configured as described above will be explained next.

First, a mask original plate 15R for red color is created by the monochrome laser printer 1. This mask original version 15R is
In order to harden the microcapsules containing a cyan dye precursor among the microcapsules coated on the photosensitive recording medium 50, this is a mask original plate with toner as a light-shielding image placed on other parts.

At this time, the monochrome laser printer 1
is in the position shown by the solid line, and the mask original 15R is guided by the guide member 22 to the color image recording device 20.
The original mask is guided into the mask original conveying device 21 .

At this time, if the sensor of the alignment device 31 confirms that there is no other mask original 15 in the alignment device a31, the mask original 15R is transported to the alignment device 31 by the date 23. At this time, the mask original 15 passes through the mask original paper feed sensor 101, and S1 becomes 1 during this time.

Next, the alignment device 31 adsorbs the mask original 15R to the bell 31a using electrostatic adsorption force and transports it to the appropriate exposure position, and then, while the sensor reads the alignment mark printed on the mask original 15R, The position is adjusted to an accurate position by a drive source (not shown).

Next, the fixed roller 56 presses down the photosensitive recording medium 50,
A drive source (not shown) rotates the cam 53 by a predetermined angle and pushes the exposure table 52 upward, so that the photosensitive recording medium 50 is attached to the belt 31al:ffi of the alignment device 31 while sandwiching the mask original 15R.

When the exposure table 52 comes into close contact with the alignment device 31, the lamp 4
2 lights up, and the exposure device 41 performs scanning exposure in the direction of arrow A in order to expose the photosensitive recording medium 50 with red light through the mask original 15R through the red filter 44R. When the exposure is completed, the lamp 42 is turned off and the exposure device 4 is turned off.
1 moves back in the direction of arrow B. At this time, the filter sill 44 of the exposure device 41 is rotated by a drive source (not shown), and the green filter 44G is positioned directly below the lamp 42.

Here, in addition to the alignment mark, the mask original plate 15 is printed with a color-specific mark indicating the color separation mask original plate, which is read by a sensor at the same time as the alignment operation. .

In addition, the filter shilling 44 is equipped with a sensor that detects the origin of each 3aM filter 44R, 44G, 44B, and if the read color mark does not correspond to each filter 44R144G, 44B of the exposure device 41, , the filter shilling 44 is rotated to correspond to each predetermined filter 44R, 44G, 44B. While the exposure device 41 moves backward, the exposure table 52 is lowered by the rotation of the cam 53, and the photosensitive recording medium 50 is separated from the alignment device 31 and the mask original 15R.

At this time, back tension is applied to the photosensitive recording medium 50 at the center of rotation of the roll of the photosensitive recording medium 50 in the cartridge 51, and when the exposure table 52 rises, a length corresponding to the amount of rise of the exposure table 52 is applied. Saga storage cartridge 51
drawn out from within. Also, when the exposure is finished, the exposure table 52
When the photosensitive recording medium 50 is lowered, it is rewound in a direction to take up the slack of the photosensitive recording medium 50.

When the exposure by the red mask master plate 15R is completed and the lowering of the exposure table 52 is confirmed, the bell of the alignment device 31 is activated.
31a rotates, and the mask original 15R is moved to the circulation guide section 2.
5, the paper is guided to the storage section 26 by the date 28, and then discharged to the paper discharge tray 30. At this time, the mask original 15 passes through the mask original discharge sensor 102a,
During that time, S2 becomes 1. Therefore, it is guided to the storage section 26.

Next, after the green mask original plate 15G created by the monochrome laser printer 1 passes through the ID member 22,
It is guided to the alignment device 31 by the date 23.

Then, as in the case of the mask original plate 15R, after alignment is performed with respect to the photosensitive recording medium 50, the exposure table 52 is raised, and the photosensitive recording medium 50 and the mask original plate 15G are aligned with each other (the bell of the alignment device 31). After that, the lamp 42 is turned on and exposure to green light is performed through the green filter 44G. After the exposure is completed, the exposure table 52
As the mask original plate 15G is lowered, the mask original plate 15G is circulated in the inner part 2.
5, the date 28 rotates, and the mask original 15G is guided to the storage section 27. As the exposure device 41 moves back to its original position, the filter sill 44 rotates, and the blue filter 44B is positioned directly below the lamp.

Similarly, the blue mask original plate 15B created by the monochrome laser printer is transferred to the mask original conveying device 2.
1, and is aligned at a predetermined position by an alignment device 31. Thereafter, the exposure device 41 exposes the photosensitive recording medium 50 to blue light.

By the above-described preparation, a latent image of a desired color image is recorded on the photosensitive recording medium 50.

Next, as the exposure table 52 is lowered, the fixed roller 56 is separated and the drive roller 57 is rotated, so that the photosensitive recording medium 50
Wind it up in the direction of arrow C. At this time, the photosensitive recording medium 5
The buffer 55 for taking up the slack and the movable idler member 64 are at the positions shown by solid lines. *Pressure developing device 7
The pressure rollers 71 of No. 0 are spaced apart from each other. Therefore, during the winding operation, the microcapsules of the photosensitive recording medium 50 are not damaged or destroyed. The drive roller 57 stops when the rear end portion of the latent image on the photosensitive recording medium 50 reaches the pressure roller 71 of the pressure developing device 70 .

In synchronization with the movement of the photosensitive recording medium 50, a developer sheet 60 is sent out from the cassette 61 by a paper feed roller 62, and is stopped at a position where the front end of the developer sheet corresponds to the rear end of the photosensitive recording medium 50. 6. Next, the pressure roller 71 of the pressure developing device 70 is rotated in the direction of the arrow and pressed against the photosensitive recording medium 50 by a drive device (not shown), and the fixed roller 56 again clamps and fixes the photosensitive recording medium 50. by this,
The photosensitive recording medium 50 is overlapped with the color developer sheet 60 and is fed in the direction of the arrow while being pressurized.
The uncured microcapsules on the photosensitive recording medium 50 are destroyed by pressure, and a color image corresponding to the latent image on the photosensitive recording medium 50 is developed on the developer sheet 50.

As the pressure roller 271 of the pressure developing device 70 rotates in the direction of the arrow, the slack remover 55 moves in the direction of the arrow E and absorbs the slack of the photosensitive recording medium 50. When the slack removing device 55 moves in the direction of the arrow E, the movable idler 64 moves i! by a mechanism (not shown). The color developer sheet 60 is moved to the position indicated by line 4, and the tip of the color developer sheet 60 is peeled off from the photosensitive recording medium 50 and guided in the direction of the heat fixing device 80.

In the heat fixing device 80, the color developer sheet 60 receives thermal energy from the heater 81 via a rotating heat roller 82 and an endless belt 84, thereby promoting color development of a color image. At the same time, the color developer sheet 60
The pine polymer (binder resin) for fixing to the base paper is thermally melted and has a smoothness corresponding to the smoothness of the surface of the endless belt, so that the surface of the color developer sheet 60 has an appropriate gloss. obtain.

The color developer sheet 60 that has been subjected to the coloring and gloss treatment is separated by the curvature from the endless belt 84 and is discharged to the paper discharge tray 63.

At this time, the color developer sheet 60
3, during which time S3 becomes 1. The second time chart shows when the mask master plate 15 does not jam in this way.
The figure is (,). The jam signal is a signal that becomes 1 when a jam of the mask original 15 is detected.

If a jam occurs while the mask original 15 is being conveyed to the alignment device W31, the mask original paper feed sensor 101 will be turned on and Sl will remain at 1. If Sl is 1 even after a certain period of time has elapsed, a jam is detected, and the drive source M1 of the mask original transport device 21 is stopped, and the mask original 15 is
Stop transporting. When the discharge of the color developer paper 60 is detected by the color developer paper discharge sensor 103, the image forming apparatus 2
The drive source M2 of 0 is stopped, and the conveyance of the color developer 60 is stopped. (See FIG. 2(b)) If the mask original discharge sensor does not turn on and S2 remains 0 even after a certain period of time has passed after the mask original 15 is discharged from the alignment device 31, a jam is detected. Then, the mask master transport device 21
When discharge of the color developer sheet 60 is detected, the image forming apparatus 20 is stopped. (Figure 2(e)
)) During the above-described series of development and color development gloss processing, the photosensitive recording medium 50 is held and fixed by the fixed rollers 56, so that in the process before the exposure stage 52, the capsule sheet 50 is not affected by the development in the subsequent process. Not affected by changes in tension, etc. Therefore, while the development process for one screen is being performed, the exposure process for the latent image of another color image can be performed on the exposure table 52.

Incidentally, when it is desired to obtain a plurality of color images from the same mask original 15, in the mask original transport device 21, the mask original 15R that has been waiting in the storage section 26 is guided again to the alignment device 31 through the date 23, The same process as the exposure process for the first sheet is performed. The mask originals 15G and 15B are also guided one after another to the alignment device 31 using the storage sections 26 and 27 as soon as the exposure of the previous mask original 15 is completed. The mask original transport device 21 can thus repeatedly circulate the mask original 15 as many times as necessary.

After obtaining the required number of color images from the same mask original 15, the date 23 rotates and guides each mask original 15 in the mask original transport device 21 to the paper discharge tray 30.

In addition, in the event that the next combination of mask originals 15 enters the monochrome laser printer 1 while a series of color images are exposed, the date 23 transfers these mask originals to the paper output tray 30. I will guide you to.

Further, the mask original conveying device 21 is equipped with a manual feed tray 29 for manually taking in the mask original 15 created by other means as described above. However, if there is already another mask original transport device in the mask original transport device 21, a manual feed date 24 is provided to prevent manual feeding.

[Effects of the Invention] As is clear from the detailed description above, according to the present invention, when the mask original is jammed, the mask original conveying means is stopped, and the writing medium conveying means is stopped after the developer sheet is discharged. Therefore, even if the mask original plate jams, a color image can be obtained.

[Brief explanation of the drawing]

1 to 3 show an embodiment embodying the present invention, FIG. 1 is a sectional view of an image forming apparatus to which this embodiment is applied, and FIG. 2 is a time chart of operation. FIG. 3 is a 70-chart diagram of the operation. In the figure, 15R, 15G, 15B are mask original plates, 31a is a belt, 50 is a photosensitive pressure sensitive recording medium, 60 is a color developer paper, 71
83 is a pressure roller, 83 is a press roller, and Jan is a signal indicating a jam.

Claims (1)

[Claims] 1. Photosensitive and pressure sensitive recording paper coated with a dye precursor (5
0) and a color developer paper (60) attached with a color developer that reacts with the dye precursor to form a color, the three-color separated mask original plate (15R, 15G, 15B) is placed on a light- and pressure-sensitive recording paper (50).
0), the mask original plates (15R, 15G, 15B) are conveyed in an image forming apparatus that superimposes the color developer paper (60) and the photosensitive pressure-sensitive recording paper (50) and develops them under pressure. means (31a), means (Jam) for detecting a jam of the mask original, and means (71, 83) for conveying the color developer paper.
), and when the mask original is jammed, only the mask original transport means (31a) stops operating, and the developer paper transport means (31a) stops operating.
An image forming apparatus characterized in that the operations of 71 and 83) are continued.