JPH0216545A - Image forming device - Google Patents

Abstract

PURPOSE:To obtain an excellent image even in a high-temperature, high-humidity state by providing a moisture absorbing means which is arranged in the device, a shutter which is provided on a discharge port for media and can be opened and closed, and an opening/closing means which controls the shutter so that the discharge port is closed when the device is not in operation. CONSTITUTION:When the device begins to operate, the shutter 31 is opened inward by an electromagnetic solenoid 31b which operates by the startup of a power source. Developed paper 20 after heat fixation can move to a form receiving tray 42 through the open shutter 31. A heat source 52 is arranged below a moisture absorbing agent 51 and heats up by being powered on to discharge moisture absorbed from the moisture absorbing agent 51 to the outside through the open shutter 31. The shutter 31 is closed unless the device is in operation to shield the inside from the outside air. Consequently, the humidity in the device is lower than the outside humidity and an adhesion state becomes hard to occur in development even in a high-humidity, high-temperature state, so that an excellent visual image is obtained.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field 1] The present invention relates to an image forming apparatus for forming an image on a recording medium.

[Prior Art 1] Conventionally, this type of image forming vcWIt involves irradiating light onto a document and using the reflected light or transmitted light to form an image on a photosensitive recording medium through an optical system such as a reflecting mirror, a filter, or a thin X. It is known that the photosensitive recording medium is configured to form a latent image or a visible image on the photosensitive recording medium. In particular, the i! Then, 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 then the developer paper is heated to form the desired image. I had a vision. 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 loaf is used.

■Problems to be Solved by the Inventionl However, when pressure fixing is performed in a hot and humid environment, the binder carried on the photosensitive pressure-sensitive sheet and the binder carried on the color developer 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 carried out in a hot and humid outside air, there is a problem in that the developer paper sticks to the surface 10-1.

[Objective 1] The present invention has been made to solve the above problems, and!
The purpose is to exhaust the moisture inside the device to the outside when it is in operation, and to shut off the inside of the device from the outside air when it is not in operation, thereby efficiently dehumidifying the moisture inside the device and obtaining a good image.

[Means for solving the fi problem 1 To achieve this object, according to the present invention, a first
a first recording medium capable of supporting a component and forming a latent image;
a second medium in which a second component that reacts with the first component is supported on the surface, and the latent image is visualized when the first component and the second component react; Image formation comprising a latent image forming means for forming a latent image on the first recording medium, and a developing means for developing the latent image by bringing the recording medium at tJ41 and the second recording medium into close contact with each other. In the device, 5
A moisture absorbing means disposed within 1wt, a shutter that can be opened and closed provided at the outlet of the medium, and an opening means for controlling the shutter so as to close the outlet when the device is not in operation. Ta.

1. Effect 1 According to the present invention having the above configuration, while the present fItm is in operation, the shutter at the medium outlet is closed, allowing the medium to pass through.1. Furthermore, as the temperature inside the device increases, moisture is discharged from the moisture absorbent to the outside throughout the day. The shutter is kept at IVl except during operation;
Moisture from the outside is blocked and the dehumidifying effect of the moisture absorbent is promoted. Further, when the color developing medium cassette is removed from the apparatus, a shutter provided at the cassette insertion port is closed and disconnected from the outside air.

[Example] Hereinafter, an example embodying the present invention will be described with reference to the drawings. In the following Examples, an embodiment will be described in which a photosensitive and pressure sensitive paper for one color, which is proposed in U.S. Pat. No. 4,399,209, is used as the photosensitive paper. A microcapsule paper (first recording medium) whose mechanical strength changes and which carries microcapsules containing a dye precursor (first component) on its surface, and the inside of the destroyed microcapsules. and a color developer paper (second recording medium) carrying a color developer (second component) that reacts with the dye precursor.

The microcapsule paper 10 is set in a roll in a supply cartridge 11 disposed above the center of the g&. The microcapsule paper 10 taken out from the cartridge 11 is conveyed downward and exposed on an exposure stage 17 disposed below the cartridge 11. The source 17r@2 on the R stacking table 1 is irradiated by the light source 3 disposed at the upper right of the device, and the optical image of the reflected light is transmitted to the qm optical stage a7 by the lens 4 and mirrors 5 and 6.
The microcapsule paper 10 is exposed to light, and a latent image is written. After use, the photosensitive recording medium should be
It is wound up on a winding row 212 arranged on the left side of the winding row 212 .

In the pressure development 1fi40 disposed in the conveyance path of the microcapsule paper 10, the color developer paper 20 and the exposed microcapsule paper 10 are overlapped and pressure is applied, so that the color developing paper 20 and the exposed microcapsule paper 10 are overlapped and pressure is applied. The dye precursor seeps out from the microcapsules and causes a coloring reaction with the color developer applied to the color developer paper 20, thereby recording an image on the color developer paper 20.

Thermal fixing located on the upper left side of the device! ! In j141, 4AJ& is applied so as to accelerate the color development of the image on the color developer paper 20 and to apply heat so that the surface of the color developer sheet 20 has an appropriate gloss.

f1r! Paper cassette 21 located at the bottom left of I
The color developer paper 20 is set therein. Reference numeral 22 denotes a paper feed roller, which separates and sends out the developer paper 20 one by one in response to a paper feed signal.A printer 30 is disposed near the insertion opening of the paper cassette 21 of the device. Further, at the upper left side of the device, there is a discharge port 31 for discharging the color developing paper 20.
A shutter is provided at the discharge port 31a, and a paper tray 42 is attached to the outside of the discharge port 31a.
Silica sol 51 as a moisture absorbing means is placed near the inside of 1a.
is installed. The shutter 31 has an electromagnetic slide/id 31 that constitutes an opening/closing means for opening and closing the shutter 31.
b is attached.

Next, a moisture absorbing means for keeping the inside of this apparatus at low humidity will be explained. When the device starts operating, the shutter 31 is moved inward by the electromagnetic slide 31, which is activated by the start-up of the power supply. The thermally fixed developer paper 20 can be moved to the paper tray 42 through the opened shutter 31. A heat source 52 is disposed below the IIU wet cutting 51, and when the power is turned on, the heat source heats up, and the moisture absorbed from the moisture absorbent 51 is discharged to the outside through the shutter 31 used. When the device is not in operation, the shutter 31 is closed and isolated from the outside air.

When the paper cassette 21 is removed from the device 6, the shutter 30 moves to +y due to the restoring force of the spring 30a shown in FIG.
It is cut off from the outside air. (See FIG. 2(u)) When the cassette 21 is inserted, the shutter 30 opens and the cassette 21 can be mounted. (Refer to FIG. 2(b)) In this case, the insertion opening of the cassette 21 is closed by the body of the cassette 211', which prevents outside air from entering.

When the device is not in operation, the moisture absorbent 50 is in the A-Machida state inside and can efficiently dehumidify. The absorbed moisture is discharged outside during operation.

1. Effects of the Invention 1 As is clear from the details described above, according to the present invention, the humidity inside the device is lower than that outside, and even in high temperature and high humidity conditions, adhesion is less likely to occur during development. It becomes possible to obtain good visualization.

[Brief explanation of the drawing]

1 to 2 show an embodiment in which the present invention is integrated, FIG. 1 is a schematic sectional view showing the configuration of the embodiment, and FIGS. 2(a) and 2(b) are FIG. 3 is an action diagram showing the operation of the shutter 30 used in the example. 10... Photosensitive pressure sensitive medium, 20... Color developer paper, 30.3
1...Shutter, 31b...Tsure/id (+31
1 ff1 means), 51... moisture absorbent.

Claims (1)

[Claims] 1. A first component that supports a first component on its surface and is capable of forming a latent image.
a recording medium, a second component that reacts with the first component is supported on the surface, and when the first component and the second component react, a second component on which the latent image is visualized; A recording medium, a latent image forming means for forming a latent image on the first recording medium, and a developing means for developing the first recording medium and the second recording medium on which the latent image is formed by bringing them into close contact with each other. an image forming apparatus equipped with a moisture absorbing means disposed within the apparatus, a shutter that can be opened and closed provided at an outlet for the medium, and controlling the shutter to close the outlet when the apparatus is not in operation. An image forming apparatus comprising an opening/closing means for opening and closing the image.