JPH04100041A - image forming device - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

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

[Prior Art] Conventionally, as an example of a color copying machine, there is one that exposes microcapsule paper, overlaps it with developer paper, and then develops it under pressure to record a desired image on the developer paper. Although it has been put into practical use, commercially available color developer paper coated with a color developer in advance has been used. However, since using commercially available color developer paper has poor versatility, the applicant of the present application first developed a powder coating device that can easily produce color developer paper using plain paper, etc. This is proposed in the specification and drawings attached to the application No.-170660.

[Problems to be Solved by the Invention] However, in images formed by an image forming apparatus using the powder coating apparatus as described above, image defects such as marbling may occur on the image surface. The reason for this is that when the support coated with the color developer and the microcapsule paper on which the latent image has been formed are brought into close contact and passed through a pressurizing means,
It turns out that this is because the color developer is transferred to the capsule paper side.

In order to solve this problem, attempts have been made, for example, to change the fixing component (wax, etc.) of the color developer, or to perform electrostatic coating by limiting the allowable range of coating thickness of the color developer to the support. . However, in the former method, there is a trade-off between fixability and fluidity of the color developer, and in the latter method, considerable mechanical precision is required in designing the coating system. It has become clear that both methods cannot produce sufficient effects because they lead to significant cost increases.

The present invention has been made to solve the above-mentioned problems, and aims to prevent a color developer from being adsorbed to the microcapsule paper side during pressure development, and as a result, obtain a good image output without image defects. The purpose of the present invention is to provide an image forming apparatus that can perform the following functions.

[Means for Solving the Problems] In order to achieve this object, the image forming apparatus of the present invention applies a latent image forming portion of the microcapsule paper before peeling off the microcapsule paper and the support after pressure development. A light source was installed to emit light.

[Function] According to the image forming apparatus of the present invention having the above configuration, by applying light to the capsule paper before peeling off the microcapsule paper and the support, it is possible to Capsule or harden. This weakens the adhesion of the color developer to the microcapsule paper, prevents the developer from being removed by the microcapsule paper when it is peeled off, and as a result, outputs a good image without image defects. I can do things.

[Example] Hereinafter, an example embodying the present invention will be described with reference to the drawings.

FIG. 1 is a block diagram of a color image forming apparatus M to which the present invention is applied.

The color image recording apparatus M is broadly divided into an exposure device 1, a color developer coating device 2, a pressure developing device 3, and a heat fixing device 4.

The exposure device 1 includes a halogen lamp 8 that exposes the microcapsule paper 7, and is located below the halogen lamp 8.
0 and a document table 11 on which a document 0 is placed.

The color developer application device 2 is equipped with a color developer carrying roller 22 and an electrode roller 23 arranged at a predetermined distance from the developer carrying roller 22. The electrode roller 23 is connected to the gap between the rollers 22 and 23, and is conveyed while being in contact with a conveyor belt 24. The developer carrying roller 22 is a plain paper P.
is provided at a position facing the transport path with a predetermined distance therebetween. A coating electric field is applied between the developer carrying roller 22 and the electrode roller 23.

The pressure developing device 3 includes a pair of pressure rollers 1 that sandwich and develop the superimposed color developer paper and microcapsule paper 7 under pressure.
It consists of 4.

The heat fixing device 4 heats and fixes the recorded image on the color developing paper on which the recorded image has been formed.

Next, the action will be explained.

After placing the original 10 on the original table 11, the user presses a start switch (not shown) to start image recording. Then, the halogen lamp 8 is turned on, and a latent image of the document 10 is formed by exposure on the microcapsule paper 7 running between the paper feed roll 5 and the take-up roll 6.

A plurality of guide rollers 12 are provided below the document table 11, and the microcapsule paper 7 exposed by the exposure device 1 is conveyed by each guide roller 12 to the pressure developing device 3.
supplied within.

On the other hand, in the developer coating device 2 , the developer S is supplied to the developer carrying roller 22 and conveyed to the transfer area 27 . Plain paper P stacked in the paper feed cassette 18
is inserted into the developer coating device 2 through the insertion port 29 by the guide roller 19. The inserted plain paper P is conveyed to the coating area 27 by the conveyor belt 24. Here, an electric field suitable for the polarity of the charged color developer S is applied to the electrode roller 23.
The charged color developer S flies from the color developer carrying roller 22 to the plain paper P due to electrostatic force.
It is applied electrostatically to become color developing paper. The developer paper discharged from the outlet 28 is conveyed by the guide roller 13, and is then superimposed on the microcapsule paper 7 on which the latent image has been formed, and is supplied into the pressure developing device 3. Pressure developing device 3
The microcapsule paper 7 and color developer paper supplied to the printer are sandwiched between a pair of pressure rollers 14 and developed under pressure, and a color image is recorded on the color developer paper. After that, before peeling off the microcapsule paper 7 and the support P coated with the color developer S, by applying light to the capsule paper 7 using a curing lamp 30, the uncured adhesive microcapsule paper 7 is removed. Capsule or harden. This weakens the adhesion of the color developer S to the microcapsule paper 7, and prevents the color developer S from being peeled off to the microcapsule paper 7 side when it is peeled off. The developer paper peeled off from the microcapsule paper 7 is conveyed to the heat fixing device 4 by a guide roller 15. The color developer paper is heated by the heat fixing device 4, and the recorded image on the color developer paper is fixed. The color developing paper with the fixed image is further conveyed by a guide roller 16 and discharged to the outside of the color image recording apparatus M.

Next, another embodiment of the present invention will be described with reference to FIG.

In this embodiment, the main components of the device are the same as those in the previous embodiment, so a detailed explanation thereof will be omitted. A hardening lamp 31 is used. In this case, the base material of the microcapsule paper 70 is
Use transparent materials. With this configuration, the curing lamp 31 may have a smaller light intensity than the curing lamp 30 described above.

As is clear from the detailed description above, in the image forming apparatus of this embodiment, the microcapsule paper 7 after pressure development
．． When peeling off the microcapsule paper 70 and the developer paper, the developer S is prevented from being adsorbed to the microcapsule paper 7.70 side, and as a result, a good image without image defects can be output.

Note that the present invention is not limited to the embodiments described in detail above, and various changes can be made without departing from the spirit thereof.

For example, instead of applying color developer S onto plain paper P,
It can also be applied to an image forming apparatus configured to coat onto microcapsule paper 7 on which a latent image is formed.

[Effects of the Invention] As is clear from the above detailed description, in the image forming apparatus of the present invention, when the microcapsule paper and the support are peeled off after pressure development, the developer is adsorbed to the microcapsule paper side. As a result, a good image without image defects can be output.

[Brief explanation of the drawing]

1 and 2 show an embodiment embodying the present invention. FIG. 1 is a block diagram of a color image recording device to which the present invention is applied, and FIG. 2 is a color image recording device of another embodiment. It is a block diagram of a device. In the figure, 3 is a pressure developing device, 7 and 70 are microcapsule paper, 30 and 31 are curing lamps, M is a color image recording device, S is a color developer, and P is plain paper.

Claims (1)

[Claims] 1. Layering the microcapsule paper on which a latent image has been exposed and a support coated with a color developer, or applying a color developer on the microcapsule paper that has been exposed to light and on which a latent image has been formed. In an image forming apparatus that forms an image on the support by coating the paper, overlapping it with a support, and performing pressure development using a pressure means, after the pressure development and before peeling off the microcapsule paper and the support, . An image forming apparatus comprising: a light source that irradiates light onto a latent image forming portion of the microcapsule paper.