JPH0216548A - 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 Field of Application 1] The present invention relates to an image forming apparatus that develops images by bringing a first recording medium and a second recording medium into close contact with each other.

[Prior art 1] Conventionally, this type of image forming apparatus irradiates light onto an original and forms an image of the reflected light or transmitted light on a photosensitive recording medium through an optical system such as a reflecting mirror, filter, or lens. A device is known that is configured to form a latent image or a visible image on the photosensitive recording medium. Especially US patent fi439
The photosensitive pressure sensitive recording medium proposed in the specification of No. 9209 (
In an apparatus using a photosensitive pressure sensitive sheet (composed of a photosensitive pressure sensitive sheet and a color developer paper), a latent image is formed by exposure on a light sensitive pressure sensitive sheet as a photosensitive recording medium, and a color developer paper is placed over the surface on which the latent image is formed. A desired developed image was obtained by applying pressure and then heating the developing paper. This pressure processing is generally called pressure fixing, and a pressure roller is used. The heat treatment is generally called heat fixing, and a Hea F roller is used.

[Problem to be Solved by the Invention 1] However, when pressure fixing is performed in a state where the outside air is hot and humid, the binder carried on the photosensitive pressure-sensitive sheet and the binder carried on the color developing paper fuse together, The photosensitive pressure sensitive sheet and the color developing paper are in an adhesive state.

If the adhesive in this state is forcibly removed, the components supported on the photosensitive pressure sensitive sheet will be peeled off from the sheet and adhered to the developing paper, making it impossible to obtain a good developed image.

Similarly, when heat fixing is performed in a hot and humid environment, there is a problem in that the developer paper sticks to the surface of the heat roller.

[Object of the Invention 1 The present invention provides the above-mentioned i! l! This was done in order to solve the problem I, by providing a mechanism to heat the second recording medium using the heat emitted from the light source before developing.
The purpose of this is to lower the relative humidity of the second recording medium itself to prevent sticking between the first recording medium and the second recording medium.

[Means for Solving the Problems 1] To achieve this object, the present invention provides a first recording medium that carries a first component on its surface and is capable of forming a latent image upon receiving light; a second recording medium in which a second component that reacts with the first component is carried on the surface, and in which the latent image is visualized when the first component and component #12 react; Image formation that includes a light source that forms a latent image on a first recording medium, and a developing means that develops the first recording medium and second recording medium on which the latent image is formed by bringing them into close contact! II! A guide section formed to guide the second recording medium to the developing means, and an introduction section for introducing heat emitted from the light source into the guide section are provided.

[Operation 1] According to the present invention having the above configuration, the guide section before developing the second recording medium receives heat from the light source via the introduction section, and the second recording medium is heated before being developed. The relative humidity of the second recording medium decreases.

1 Embodiment] Hereinafter, an embodiment embodying the present invention will be described with reference to the drawings. In the following examples, a color-compatible photosensitive pressure-sensitive sheet (first recording medium) and color developer paper (second recording medium) proposed in U.S. Pat. No. 4,399,209 are used as photosensitive recording media. Here we will show the ★embodiment when doing so. This photosensitive pressure sensitive sheet supports on its surface microcapsules whose mechanical strength changes upon exposure to light and in which a dye precursor (first component) is colored in black and white. The color developer paper carries a color developer (second component) that reacts with the dye precursor inside the destroyed microcapsules.

The overall configuration of the image forming apparatus used in the present invention will be described with reference to FIG. 1.A document insertion slot 1 is provided on the right side of the device, and a color developing paper outlet 2 is provided at the top on the left side. Developing paper 3 is arranged at the bottom.

Further, inside the device, a photosensitive pressure sensitive sheet roll 4 is disposed in the upper right part, and a photosensitive pressure sensitive sheet 5 is disposed inside the device.
is held and stored in a roll. Below the photosensitive and pressure sensitive sheet roll cassette 4, there is a feed roller 6-a.
is installed.

The photosensitive pressure sensitive sheet 5 then moves to the left and reaches the feed roller 6-b, pressure fixing a-rough and winding roller 8, where 8% is removed.

A pressure plate 9 is disposed above the photosensitive pressure sensitive sheet 5 and moves up and down in conjunction with a drive motor (not shown). Further, below the photosensitive pressure sensitive sheet 5, the original inserted from the original insertion opening 1 and the original table 10 are held in close contact with the pressure plate 9, and the original and the original table 10 are held in a predetermined position. An exposure table 11 for transportation is provided.

Note that an exposure table lath 12 is fitted into the exposure table 11.

A diffusion plate 13 is arranged below the exposure table 11.

Further, a halogen lamp 14 and a reflecting mirror 15 are arranged at the lower left side of the device. The diffusion plate 13 is disposed to the right of the halogen lamp 14, and a color filter 16 is disposed between the halogen lamp 14 and the diffusion plate 13. Above the reflecting mirror 15, a cooling fan 17 constituting an introduction section is arranged to blow air upward.

A developer paper guide 18 constituting a guide section is provided on the right side of the developer paper 3, and a developer paper guide 18 is provided above the cooling fan 17 in the developer paper guide so as to send air from the cooling fan to the left side. A group of ventilation holes 19 are provided. The developer paper 20 is inserted from the outside, is arranged to pass through the developer paper guide 18 and the pressure fixing roller 7, passes through the upper guide 21 at the top and the heat fixing device @22, and reaches the developer paper outlet 2. Further, the heat fixing device f122 includes a rubber roller 23 and a heat roller 24.

Next, about the action, t! This will be explained with reference to Figure IIJ1.

A document table 10 with a document set at a predetermined position is inserted through the document insertion slot 1 and set at the predetermined position.

Further, the color developer paper 20 is inserted through the color developer paper insertion slot 3 and set at a predetermined position. The cooling fan 17 is rotating and blows out the air around the halogen lamp to the outside from the developer paper 3 through the vent group 19 and the developer paper guide 18.

When an exposure switch (not shown) is pressed, the pressure plate 9 is lowered by the drive of a motor (not shown), and the photosensitive pressure sensitive sheet 5 and the original 10 are pressed against the exposure table 12 and brought into close contact therewith. After this operation, exposure begins. The halogen lamp 14 lights up,
The light illuminates the diffuser plate 13 together with the reflecting mirror 15, is reflected there, and reaches the exposure table plus 12. Here, color conversion is performed by the filter 16. The irradiated light passes through the exposure table glass 12 and records the image information of the original 110 on the photosensitive pressure sensitive sheet 5. During this time, the cooling fan 17 continues to rotate to cool the halogen lamp 14 and continues to apply warm air to the developer #20 through the vent group 19. Furthermore, the warm air passes through the developer paper guide 18 and exits to the developer paper insertion slot 3. During this time, the portion of the developer paper 20 that is overlapped with the photosensitive pressure-sensitive sheet 5 on which the image information is recorded is heated without fail. As a result, the relative humidity of the color developing paper 20 decreases.

After the exposure is completed, the pressure plate 9 is raised, and the contact state of the photosensitive pressure-sensitive sheet 5 is released. Then, the take-up roller 8
Then, the pressure fixing row 27 rotates, and the photosensitive pressure sensitive sheet 5 is fed. *The developer paper 20 is also sent to the pressure fixing roller 7.
6, which are superimposed immediately before the image forming apparatus 6, pass through a pressure fixing roller 7 while remaining superimposed, and are transferred and developed. Here, the photosensitive pressure-sensitive sheet 5 that is no longer needed is separated from the developer paper 2G and wound up by the winding roller 8. On the other hand, the developer paper 20 passes through the upper id 21 and passes through the heat fixing device 22.
Enter. Here, the color developing paper 20 is attached to a heat roller 24.
The developer paper is heated and fixed, and then the developer paper exit 2
more is discharged to the outside.

The present invention is not limited to the embodiments detailed above (
, various changes can be made without departing from the spirit thereof.

For example, as shown in FIG. 2, a curved reflecting mirror 25 constituting an introduction section is disposed in a part of the color developer wkff id 18 in FIG. good.

Further, when the developer paper inlet 26 is located below the lamp and the feed row 228 is disposed above the diffuser plate 27 as shown in FIG.
After the developer paper 29 is fed by the feed roller 28 to a position where it can serve as a diffusion plate constituting the introduction section,
Exposure is started, and the developer paper 29 is used as part of a diffuser plate and may be heated by the radiant heat of the light source 30.

Furthermore, as shown in FIG. 4, a light source 31 is located at the bottom of the apparatus, a developer paper inlet 33 is located below the document insertion opening 32, and on the left side there is an upper exposure table with a lath 34, a lower exposure table glass 35, and a feed roller 36. is installed. In this case, the developer paper 37
is inserted into the developing paper 33 and set at a predetermined position by the feed roller 36. Thereafter, exposure is started from the light source 31, and at the same time that the photosensitive pressure sensitive sheet 38 is exposed to the light transmitted through the color developer paper 37, the color developer paper 37
may be always heated for a certain period of time by the radiant heat of the light source 31. In this case, the space between the light source 31 and the lower exposure table lath 35 constitutes an introduction section.

As shown in FIG. 5, a shutter 40 is disposed in front of the light source 39 and is movable using a sensor that responds to heat or a shape memory alloy. In this case, the light source 39 is turned on. The shutter 40 constituting the introduction section is located at the solid line position, and at the same time warms the interior of the light source chamber 41, it also warms the developing paper 43 through the upper ventilation hole 42, and when it reaches a certain temperature, it is detected by a sensor (not shown) and the shutter is moved as indicated by the dotted line. Move to position and start exposure. The developer paper may be heated in this manner.

In the second to fifth embodiments, the same members as those used in the #11 embodiment are given the same reference numerals and detailed explanations are omitted. Identical parts with the reference numerals serve the same role as in the first embodiment.

[Effect of the Invention 1] As is clear from the detailed description above, according to the present invention, even at high temperatures, problems such as sticking to the first and second recording media do not occur and the media can be used without any trouble. There is an advantage. Since the heat of the light source is used to dry the second recording medium, there is no need to provide a separate heating means.
The cost of the device can be reduced.

[Brief explanation of the drawing]

1 to 5 show embodiments embodying the present invention, FIG. 1 is a schematic sectional view of the device showing the first embodiment, and FIG. 2 is a schematic cross-sectional view of the device showing the first embodiment. FIG. 3 is a schematic cross-sectional view of a device showing a third embodiment, FIG. 4 is a schematic cross-sectional view of a device showing a fourth embodiment, and FIG. FIG. 2 is a schematic cross-sectional view of a device showing an example. 5.38...Photosensitive pressure sensitive sheet, 17...Fan, 1
5.25...Reflector, 20129,37.43...
Developing paper, 3...Exhaust port, 40...Shutter, 17,
19°25.27.34,35,40.42...Heating mechanism, 18.25,27,34,35.42...
Paper passing part, 14.30, 31.39...Light source, 3,2
6.33...Insertion port, 22...Heat fixing device. Patent applicant Katsuji Kawanari, President and Director of Brother Industries, Ltd.

Claims (1)

[Scope of Claims] 1. A first recording medium that supports a first component on its surface and is capable of forming a latent image upon receiving light, and a second component that reacts with the first component is provided on its surface. a second recording medium that is carried and on which the latent image is visualized when the first component and the second component react; a light source that forms the latent image on the first recording medium; In an image forming apparatus comprising a developing means for developing a first recording medium on which a latent image is formed and a second recording medium in close contact with each other, for guiding the second recording medium to the developing means. and an introduction part for introducing the heat emitted from the light source into the guide part, and the second recording medium guided through the guide part receives the heat emitted from the light source. An image forming apparatus characterized by receiving: