JPH0240655A - Image forming device - Google Patents

Abstract

PURPOSE:To promote developing of an image and to make it glossy without generating a chipping in the image by heating a developing paper at non-contact with a hot air heating device. CONSTITUTION:The developing paper 38 is taken out from a developing cassette 32 by a half moon roller 33 with the traveling in the left direction, for example, of an original platen glass 2, fed to a pressure developing device 20, in a condition where it is layered with the already exposed micro capsule paper 37, and the latent image on the paper 37 is developed and transferred onto the developing paper 38. After the developing paper 38 is passed through the hot air, the surface resin layer is solidified by being cooled naturally, a smooth surface is formed, and the surface is made glossy. Here, shielding the heat fixing device 51 from the outside, the hot air, which heated the developing paper 38, can be fed to a blowing fan 29 again to circulate the hot air. Thus the electricity consumption can be brought down.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an image forming apparatus that forms an image on a photosensitive recording medium based on predetermined image information.

[Prior Art] Conventionally, this type of image forming apparatus irradiates a document with light 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, a filter, or a lens. A device is known that is configured to form a latent image or a visible image on the photosensitive recording medium. Specifically, U.S. Patent No. 4399
In the device using the photosensitive pressure sensitive recording medium (consisting of a photosensitive pressure sensitive sheet and color developer paper) proposed in the specification of No. 209,
A latent image is formed by exposure on a photosensitive pressure-sensitive sheet as a photosensitive recording medium, a developer paper is placed on the surface on which the latent image is formed and pressure is applied, and the developer paper is then heated to form the desired developer image. I was getting . This pressure processing is generally called pressure fixing, and a pressure roller is used. The heat treatment is generally called heat fixing, and a heat roller is used.

[Problems to be Solved by the Invention] However, when the surface of the color developer paper coated with the color developer becomes sticky when heated, the image is transferred to the heat roller, and a good image may not be obtained.

The present invention has been made in order to solve the above-mentioned problems, and aims to obtain a good image by heating a developing paper in a non-contact manner.

[Means for Solving the Problems] In order to achieve this object, the image forming apparatus of the present invention includes a hot air heating means for heating the color developing paper.

[Function] According to the present invention having the above-mentioned configuration, the color development of the image is promoted and the image is made glossy by heating the color developing paper in a non-contact manner.

[Example] Hereinafter, in order to explain the present invention more specifically, an example will be given and explained.

The drawing is a schematic cross-sectional view of a photosensitive pressure-sensitive copying machine that is capable of full-color copying. Incidentally, a photosensitive paper (consisting of microcapsule paper and developer paper) that enables such copying has been proposed in Japanese Patent Application Laid-Open No. 58-88739, and will not be described in detail here.

As shown in the figure, the photosensitive and pressure-sensitive copying machine 40 is composed of a document table glass 2 and a document table cover 1, the top plate of which is movable in the horizontal direction.A desired document is placed face down on the document table glass 2. Can be placed in any condition. A light source consisting of a halogen lamp 3 extending in a direction perpendicular to the direction of movement of the document table glass 2 and a semi-cylindrical reflecting mirror 4 arranged to surround it is fixed to the upper right side of the copying machine 40. Light is irradiated in a line toward the document table glass 2.

Therefore, the light emitted from the halogen lamp 3 can sequentially illuminate the entire surface of the document table glass 2 from the left end to the right end by moving the document table glass 2 in the left-right direction. The light emitted from the light source passes through the transparent original platen glass 2 and is reflected by the original placed on it. A document table cover 1 is provided to cover the document table.

In addition, in order to use the light emitted from the halogen lamp 3 to irradiate the original with high efficiency, a beam flap 5 is arranged to the left of the light source to reflect the light that is not directly directed toward the original and use it again to irradiate the original. .

A fan 6 and a louver 7 are provided to the right of the halogen lamp to draw air from the outside. As a result, air can be efficiently applied to the document table glass 2. halogen lamp 3
The light reflected from the original placed on the original platen glass 2 passes through the filter 8 and enters the lens 9. The filter 8 is used to change the light transmission characteristics according to the sensitivity characteristics of the microcapsule paper 37 and adjust the color tone of the copied image. The lens 9 is attached to a lens mounting plate 10, and allows minute angle adjustment with respect to the optical path.

The light focused by the lens 9 is changed direction by 180 degrees by two reflection mirrors 11, and is imaged on the microcapsule paper 37 closely positioned below the exposure table 19. The two reflecting mirrors 11 are fixed to a mirror mounting plate 12, and the optical path length and focus are adjusted by finely adjusting the mounting position of the mirror mounting plate 12.

On the other hand, a long microcapsule paper 37 is wound around a cartridge shaft 14 and housed in a removable cartridge 13 placed below the document table glass 2.
One end thereof passes through a number of rollers and a pressure developing device 20 and reaches a winding shaft 25 .

That is, the microcapsule paper 37 coming out from the lower part of the cartridge 13 is transferred to the feed roller 15 and the Tyco roller 1.
7 and passes below the exposure table 19 , and then supplied to the pressure developing device 20 . Thereafter, the microphone capsule paper 37 that has passed through the pressure developing device 20 is guided to a peeling roller 23 and a meandering adjustment roller 24, and then wound onto a winding shaft 25. The unexposed microcapsule paper 37 after leaving the cartridge 13 is maintained in an unexposed state by the light shielding cover 16.

The transport speed of the microcapsule paper 37 is controlled to be constant by the capsule paper feed roller 22, and is made to match the moving speed of the document platen glass 2, so that the microcapsule paper 37 is Latent images of predetermined lines of the document are sequentially formed.

Further, below the pressure developing device 20, a color developer paper cassette 32 is provided that accommodates a cut paper type color developer paper 38. The tip 32a of the developer paper cassette 32 differs depending on the type of developer paper, and a developer paper discriminator 50 fixed to the main body of the copying machine 40 determines the type of developer paper from the shape of the developer paper cassette 32. The color developer paper 38 is taken out one by one by the half-moon roller 33, the leading end of which is aligned by the color developer paper roller 34 and the registration gate 35, and then conveyed to the paper inlet of the pressure developing device 20.

Therefore, the pressure developing device 20 includes the microcapsule paper 37.
The color developer paper 38 and the color developer paper 38 are supplied in a state where they are in close contact with each other and are integrated. The pressure developing device 20 is composed of a small diameter roller 21 and a backup roller 31. The microcapsule surface on which the latent image of the microcapsule paper 37 is formed and the color developer paper 3
The roller 8 is sandwiched between the small-diameter roller 21 and the backup roller 31 while being in contact with the developer-coated surface of 8 on the inside, and pressure is applied thereto. This pressure destroys the unexposed microcapsules and forms an image on the developer paper 38.

The microcapsule paper 37 and the color developer paper 38 that have come out of the pressure developing device are conveyed by a capsule paper feed roller 22, and the microcapsule paper 37 and the color developer paper 38 are separated by a peeling roller 23 in an upward direction and a color developer paper 38 in an orthogonal direction. After color development is promoted by the heat fixing device and an image is formed on the color developer paper 38, the paper is conveyed to the paper discharge tray 27 with the image side facing up. Heat fixing device 5
1 is a heating section 2 which has a heater 30 and two blower fans inside.
8 and a group of color developing paper feed rollers arranged before and after the roller.

The separated microcapsule paper is moved to a meandering adjustment roller 24.
The film is then wound around the winding shaft 25.

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

Now, after opening the document cover 1 and placing the document on the document glass 2, press the start button (not shown).The document glass 2 will move to the right in FIG. The glass 2 stops at a position where the left end faces the light source. Thereafter, with the halogen lamp 3 turned on, the document table glass 2 is moved to the left. The light emitted from the halogen lamp 3 is reflected by the original, and then passed through the filter 8.
, after being reflected by the lens 9 and the two reflecting mirrors 11,
An image is formed on a microcapsule paper 37 located one level below the exposure table. At this time, the microcapsule paper 37 is moved to the right on the exposure table 19 at the same speed as the moving speed of the document table glass 2, so the image on the document is formed as a latent image on the microcapsule paper 37. Ru. As the platen glass 2 moves to the left, the half-moon roller 33 takes out the developer paper 38 from the developer paper cassette 32 and supplies it to the pressure developing device 20 in a state where it is overlapped with the exposed microcapsule paper 37. capsule paper 37
The upper latent image is developed and transferred onto the developing paper 38.

Thereafter, the developer paper 38 enters the heat fixing device 51.

In the heat fixing device 51 , the air sent from the blower fan 29 is heated by the heater 30 and applied to the color developer paper 38 . The color developing paper 38 is heated by this hot air, and color development is promoted. Further, the surface resin layer of the color developing paper 38 is heated and melted to smooth the surface.

The surface resin layer is solidified by natural cooling after the color developer paper 38 passes through the hot air, forming a smooth surface and a glossy surface. By shielding the heat fixing device 51 from the outside, the hot air that heated the color developing paper 38 can be sent again to the two blowing fans to circulate the hot air. This can reduce power consumption.

On the other hand, the microcapsule paper 3 that has passed through the pressure developing device 20
7 are sequentially wound around the winding shaft 25.

When the document platen glass 2 finishes moving to the position where its right end faces the light source, copying of the document is completed and the halogen lamp 3
is turned off.

In addition to image forming apparatuses that utilize reflected light from a document as described above, devices that form images by exposing a document and a light-sensitive pressure-sensitive medium in close contact with each other, and color documents such as those shown in Japanese Patent Application No. 113877-1982. Of course, it can also be applied to an apparatus that forms an image by contact exposure using a color separation mask original plate.

[Effects of the Invention] As is clear from the above detailed description, the present invention can heat developing paper without contact using a hot air heating device, and promotes color development and gloss of an image without causing chipping of the image. be able to.

[Brief explanation of the drawing]

The drawing is a schematic diagram of an image forming apparatus of the present invention. In the figure, 1 is a manuscript cover, 2 is a manuscript glass, 20 is a pressure developing device, 28 is a heating section, 29 is a blower fan, 30 is a heater, 37 is a microcapsule paper, 38 is a color developer paper,
40 is a copying machine, 50 is a color developing paper discrimination section, and 51 is a heat fixing device.

Claims (1)

[Scope of Claims] 1. A photosensitive pressure-sensitive medium whose surface layer supports photocurable microcapsules containing a dye precursor and a photosensitive substance, and a color developer capable of causing a color reaction with the dye precursor. An image forming apparatus for forming an image on a color developing medium using a color developing medium having a surface layer supported thereon, the image forming apparatus comprising a hot air heating device as a means for heating the color developing medium. .