JPH0330984A - Electrostatic coupler applying apparatus - Google Patents

Abstract

PURPOSE:To prepare a coupler medium prevented from the transfer of a coupler to a photosensitive pressure-sensitive recording medium at the time of the pressure development with the photosensitive pressure-sensitive recording medium using an arbitrary medium by applying release treatment to the part coming into contact with coupler of a coupler fixing means. CONSTITUTION:A release sheet 26 is superposed on the coupler toner 13b adsorbed on an arbitrary medium 2 by electrostatic force and pressure is applied to the release sheet 26 by two pressure fixing rollers 25 to firmly fix the coupler toner 13b on the arbitrary medium 2. By this method, the coupler medium 22 constituted of the arbitrary medium strong against both of vibration and impact is formed and superposed on a photosensitive pressure-sensitive recording medium 1 having a light latent image formed thereto and developed under pressure by a pressure developing roller 7 and heated by a thermal fixing roller 8 to form a color and an image wherein a manuscript is faithfully reproduced can be formed. The developed color coupler medium 22 is thermally fixed at 100-140 deg.C by a roller in order to accelerate color forming reaction.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field 1] The present invention relates to an apparatus for applying a color developer onto an arbitrary medium in order to form an image on the medium.

[Prior Art 1] Conventionally, a method is known in which an image is formed by causing a photosensitive pressure-sensitive recording medium and a color developer medium to interact with each other. This is JP-A-61-
As shown in JP-A No. 137749, JP-A-61-143738, JP-A-61-173981, etc., it supports a color developer made from acid clay, 7-emer, salicylic acid alone or a mixture. It uses a medium and a photosensitive pressure-sensitive recording medium carrying microcapsules whose mechanical strength changes by encapsulating a dye precursor and a photopolymerizable composition that is sensitive to light. The light-sensitive pressure-sensitive recording medium is exposed to light according to the image information, the color developer medium is brought into close contact with the light-sensitive pressure-sensitive recording medium, the microcapsules with low mechanical strength of the light-sensitive pressure-sensitive recording medium are destroyed, and the dye precursor and color developer that flow out are separated. An image is formed on the developer medium. This color developer medium was created by dispersing a color developer in an aqueous solution and applying the dispersed solution to an arbitrary medium.

However, if the developer medium is not dispersed in an aqueous solution,
There are problems such as difficulty in preparing a dispersion solution and an increase in the size of the coating equipment used in the above method, and it has not been possible to easily apply a color developer to any medium. Therefore, a method of powdering a color developer and applying it is disclosed in JP-A-62-150901,
9 A method of powdering and applying a color developer as shown in JP-A No. 62-256003, etc. involves converting the color developer into a toner and applying the color developer onto an arbitrary medium using an electrostatic method. By this, a color developer medium can be easily formed.

[Problem to be Solved by the Invention 1] However, when the color developer medium formed as described above is brought into close contact with the light-sensitive pressure-sensitive recording medium and pressure development is performed to form an image, The color developer coated on the surface may be transferred and adhered to the light-sensitive pressure-sensitive recording medium side by pressure development.0 When the color developer is transferred and adhered to the light-sensitive pressure-sensitive recording medium side of any medium on which an image is formed, There was a problem in that the image was missing.

In addition, when the color developer coated on an arbitrary medium is overlapped with the light-sensitive pressure-sensitive recording medium and pressed, a roller is used, for example, to fix the color developer so that it does not transfer to the light-sensitive pressure-sensitive recording medium. If it is, there is a problem that the developer on the developer medium may peel off when it comes into contact with the roller.

The present invention has been made in order to solve the above-mentioned problems, and includes attaching a color developer toner to an arbitrary medium-L,
An object of the present invention is to provide a device for fixing the color developer toner.

[Means for Solving the Problems 1] In order to achieve this object, the electrostatic color developer coating device of the present invention includes a developer electrostatic adhesion means for electrostatically applying a color developer to a recording body, and A color developer that adheres to the medium by electrostatic force) A color developer that fixes to maintain strong adhesion, and a developer fixing means, and a release agent is applied to the part of the developer fixing means that comes into contact with the developer. It is characterized by the fact that the treatment is alms.

[Operation 1] In this apparatus having the above configuration, the developer toner is e-electronically adhered to the recording medium and then fixed.

At this time, since a mold release treatment is applied to the position of the color developer fixing means in contact with the color developer, fixing is performed without the color developer being transferred to the color developer fixing means.

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

In FIG. 2, the light irradiated from the light 'a9 onto the original [3] is reflected, passes through the filter unit 10, the imaging lens 4, and is supplied from the photosensitive pressure-sensitive recording medium 1 from the cartridge 5.
image on top. Microcapsules are supported on the photosensitive and pressure sensitive recording medium 1, and by selectively exposing and curing the microcapsules with light, a latent image of the document 3 is formed on the photosensitive and pressure sensitive recording medium 1. Ru. A drive device (not shown) opens the document 3 and the photosensitive pressure sensitive recording medium 1.
Original 3 is moved and slit exposure is performed.

Further, since the spectral radiation amount of the light B9 and the sensitivity of the photosensitive pressure sensitive recording medium 1 are different, a filter unit 10 for color correction is inserted. Filter unit 1 for color correction
0 is composed of three filters, red, green, and blue, and the sensitivity of the photosensitive and pressure sensitive recording medium 1 is matched by the amount of insertion of each filter unit into the optical path. Further, the imaging lens 4 has a variable imaging magnification, and the exposure scanning speed for the original f1%9 is changed in conjunction with the change in the imaging magnification, and an image is formed on the photosensitive pressure sensitive recording medium 1. The size of the image is changed.

The photosensitive and pressure sensitive recording medium 1 on which the latent photoimage has been formed is conveyed to a pressure developing roller, superimposed on a color developer medium 22 formed in the following manner, and subjected to pressure development. The color developer medium 22 is an arbitrary medium 2 taken out from the supply power agent 31 by passing through the color developer and developing device RA13.
After a color developer is applied thereon, it is overlapped with an endless release sheet 26 and fixed by a developer fixing roller 25, thereby forming the color developer. The operation is shown in FIG. The surface of any medium 2 fed from the paper feed cassette 31 is coated with a color developer by the electric field between the color developer developing sleeve 13a and the counter electrode 12. This color developer is made into a toner, and the color developer toner 1313 is stirred and frictionally charged by the color developer developing sleeve 13a. The charged color developer toner 13b is transferred to the color developer developing sleeve 13 up to an arbitrary medium 2 due to adhesive force such as electrostatic attraction and adhesive force.
transported by a. Conveyed color developer toner 13b
is attracted to the counter electrode 12 side by the electric field between the developer developing sleeve 13a and the counter electrode 12. At that time, when an arbitrary medium 2 is passed between the developer developing sleeve 13a and the counter electrode 12, the developer toner 13b is deposited on the arbitrary medium 2.
is attached and held onto any medium 2 by electrostatic attraction. The developer toner 13b, which is held on any medium 2 simply by electrostatic force, falls and scatters when vibration is applied, so the developer toner 13b is fixed with pressure in order to be firmly supported. do.

As shown in FIG. 1, a release sheet 23 is superimposed on the developer toner 13b adsorbed onto an arbitrary medium 2 by electrostatic force, and pressure is applied using two pressure fixing rollers 25.
The developer toner 13b is firmly fixed on any medium 2. By doing this, a color developer medium 22 made of any medium 2 that is resistant to vibrations and shocks is formed.

Since the color developer itself has hygroscopic properties and adhesive strength, it can be fixed on the medium 2 with a slight pressure. On the other hand, since this color developer exhibits adhesion to substances other than the medium 2, the color developer toner 1 that is electrostatically attracted to the medium 2
It is not preferable for the pressure fixing roller 26 to come into direct contact with the fixing roller 3b. Therefore, as described above, pressure is applied to the developer toner 13b and any medium 2 through the release sheet 26.

The release sheet 26 is coated with a release agent that has good release properties from the color developer. For example, preferred release agents include silicone resin, 77 base resin, puffin wax,
It is a mixture of silicone oil and acrylic resin, etc. These resins have characteristics such as low surface tension, poor wettability, and large contact angle.

The color developer medium 22 formed as described above is superimposed on the photosensitive and pressure sensitive recording medium 1 on which the optical layer image has been formed, is pressure developed by the pressure developing roller 7, and is heated by the heat fixing roller 8. As a result, it is possible to develop color and form an image that faithfully reproduces the original.

The developed color developer medium 22 is thermally fixed by a roller at 100 to 140° C. to promote the color development reaction. This heat fixing not only promotes color development but also serves to dissolve the developer resin and protect the surface of the image.

In this embodiment, an endless release sheet 26 is used when fixing the color developer on any medium 2 by pressure, but the pressure fixing roller 25 itself may be coated with a release agent. .

Furthermore, the release sheet 2G can be used not only for fixing by pressure but also for fixing the color developer on any medium 2 by heat.

[Effect of the Invention 1] As is clear from the detailed description above, the present invention provides a color developer medium in which the color developer is not transferred to the light and pressure sensitive recording medium during pressure development with the light and pressure sensitive recording medium. Can be made using any medium. This creates great selectivity in the paper on which the image is formed.

[Brief explanation of drawings]

Figures 1 to 3 show embodiments embodying the present invention. Figure t51 is a diagram showing the pressure fixing device of this embodiment, and Figure 2 is a diagram showing a pressure fixing device using a color developer medium. FIG. 3 is a schematic diagram of an image forming apparatus, and FIG. 3 is a diagram showing an electrostatic developer developing device that transfers developer toner to an arbitrary medium. 2... Any medium, 22... Color developer medium, 13...
- Electrostatic color developer developing device, 13b... Color developer toner, 2
5... Color developer toner pressure fixing roller, 26... Release sheet.

Claims (1)

[Claims] 1. A device for coating a recording medium (2) with a color developer (13b) that develops color by reacting with a dye precursor;
a color developer electrostatic adhesion means (13) for electrostatically applying color developer b); and a color developer (13) that is adhered to the recording medium (2) by electrostatic force.
b) a developer fixing means (25, 26) fixed to give strong adhesion to the color developer fixing means (25, 26);
An electrostatic developer coating device characterized in that the portion (26) in contact with the developer in step 26) is subjected to a mold release treatment.