JPS62286069A - Optical printer - Google Patents

Abstract

PURPOSE:To directly record color images on a photosensitive paper at a high speed by using the photosensitive paper having three colors as a light image receiving body and forming an original image due to a toner on the surface of a rotating belt related to an original image receptor means by a multistylus electrode array and irradiating, a corresponding light source to expose the photosensitive paper by the transmitted light. CONSTITUTION:The original image due to the toner required for exposure of, for example, magenta is formed on the surface of a rotating belt 1 by an electrode array 2 and is brought above fluorescent lamps 4a-4c. The fluorescent lamp 4a is lit to expose microcapsules containing magenta coloring matters on a photosensitive paper 3 and is extinguished. This operation is repeated for cyan and yellow. Since light is absorbed by the toner in a part of the original image where the toner is electrified, microcapsules in a corresponding part on the photosensitive paper 3 are held unexposed. Finally, these unexposed microcapsules are fixed with a pressure through a pressure roll 7 to obtain a color picture on the photosensitive paper 3. Thus, the picture is obtained more quickly than line sequential exposure because of this face exposure.

Description

Detailed Description of the Invention 3. Detailed Description of the Invention [Field of Industrial Application] The present invention relates to optical printing, and particularly relates to an optical printer device suitable for recording color images on photosensitive paper. It is.

[Conventional technology]

Conventionally, as an optical printer for forming an original image on a receptor member by charging toner powder in accordance with an electric signal, for example, a technique described in Japanese Patent Laid-Open No. 59-3461 is known.

The technique involves forming an electrostatic latent image of a non-fixed or non-permanent toner image on an intermediate photoreceptor, ie, a first receptor member, of a light image, and using the m-image to transfer an electrostatic latent image of a toner image onto a second receptor member. This method forms a permanent image using toner again.

[Problem that the invention seeks to solve]

In the apparatus described in the above-mentioned Japanese Patent Application Laid-Open No. 59-3461, no consideration was given to means for obtaining a permanent color image.

Furthermore, since two toner recording devices, a first image device and a second image device, and an intermediate photoreceptor are required, there is a problem that the device becomes complicated.

) The present invention has been made in view of the problems of the prior art described above, and it is possible to directly record a color image on photosensitive paper at high speed by using a toner image as an original image without using an intermediate photoreceptor. To provide optical printers.

That is the purpose.

[Rounding method to solve problems]

In order to achieve the above object, an optical printer according to the present invention has an original image receptor means formed by forming a thin film of an insulating layer on a magnetic conductive layer, and a toner charged to the original image receptor means according to an electric signal. At least a multi-acicular electrode for forming an original image, a means for conveying a photosensitive paper having a surface coated with a group of microcapsules containing a coloring material, and a visible light beam to be transmitted through the original image receptor means. A plurality of light sources for irradiating light or ultraviolet rays to form a color image by multiple exposures in accordance with the exposure wavelength of each microcapsule on the photosensitive paper; An imaging lens for forming an original image of toner on the photosensitive paper, and a pressure applying means for fixing and coloring unexposed areas of the microcapsules on the photosensitive paper that are blocked by the toner during image formation. It's dead.

It should be noted that for the above purpose, a photosensitive paper having three colors of Mase 7F, cyan, and yellow was used as a photoreceptor without using an intermediate photoreceptor.

Three sets of light sources capable of independently exposing each of these colors are provided, and an original toner image is formed on the rotating belt surface of the original image receptor means by a multi-needle electrode array, and the corresponding light source is irradiated. This is achieved by sequentially exposing the photosensitive paper to the transmitted light in correspondence with the original toner image.

Examples of photosensitive paper include the image forming sheet described in JP-A-58-88740, in which a layer of microcapsules containing a coloring material and a layer of a developer are coated on a sheet serving as a support. The photoreactive microcapsule paper formed by

[Effect]

To produce a color image on the above photoreactive microcapsule paper (hereinafter simply referred to as photosensitive paper).

It is necessary to selectively harden the microcapsules containing magenta, cyan, and yellow coloring materials (dyes). For this purpose, each microcapsule has an effective wavelength. It is necessary to irradiate visible light or ultraviolet light corresponding to the recorded image.

For this purpose, an original toner image is formed on the transparent rotating belt surface of the original image receptor means, visible light or ultraviolet light is irradiated onto the rotating belt surface, and the photosensitive paper is exposed to the transmitted light. Because visible or ultraviolet light is absorbed by the toner, visible or ultraviolet light that passes through the rotating belt in areas that do not have toner will harden the microcapsules and cause the unexposed areas of the original image that do have toner to harden. Since microcapsules do not harden, they are colored by being fixed by a pressure roller that is a pressure applying means.

〔Example〕

Hereinafter, each embodiment of the F1 invention will be described with reference to FIGS. 1 to 3.

First, FIG. 1 is a schematic perspective view of an optical printer according to an embodiment of the present invention.

In FIG. 1, reference numeral 1 denotes a transparent rotating belt associated with an original image receptor means formed by forming a thin film of an insulating layer on a conductive layer. 2 shows a multi-needle electrode array for forming an original image by charging toner on the surface of the rotating belt 10 according to an electric signal.
This corresponds to the needle electrode arrangement described in Publication No. 61.

3 is photoreactive microcapsule paper (hereinafter simply referred to as photosensitive paper) formed by coating the surface of 5 with a layer of microcapsules containing magenta, cyan, and yellow colorants;
For example, the photosensitive paper described in JP-A-S8-88740 is used.

4a, 4b, and 4c are fluorescent lamps for exposing magenta, cyan, and yellow colors, respectively; 5F;
i-imaging lenses are shown. As shown in FIG.
, 4b, 4c face the rotating belt 1, and the rotating belt 1
The photosensitive paper 3 is disposed at a position where the original image formed by toner on the surface of the photosensitive paper 3 can be formed on the photosensitive paper 3 via the imaging lens 5.

Reference numeral 6 refers to a conveyance roller that is a means for conveying the photosensitive paper 3, and 7 refers to a pressure applying means for fixing and coloring the unexposed areas of the microcapsules on the photosensitive paper 3 that are blocked by the toner during image formation. It is a pressure roller.

The operation of recording a color image using the optical printer shown in FIG. 1 will be explained.

First, an original image using toner necessary for exposure of one of the three colors magenta, cyan, and yellow, for example magenta, is formed on the surface of the rotating belt 1 by the electrode array 2, and the upper part of the fluorescent lamps 4a, 4b, 4c is formed. to be located. Next, fluorescent lamp 4a
is turned on, the microcapsules containing the magenta coloring material on the photosensitive paper 3 are exposed, and the light is turned off.

Repeat this operation for cyan and yellow.

At this time, since light is absorbed by the toner in the charged toner portion of the original image, the corresponding microcapsule portion on the photosensitive paper 3 remains unexposed.

Finally, the unexposed microcapsules are transferred to a pressure roller 7.
When pressure fixing is performed through the photosensitive paper 3, the microcapsules are crushed and colored, and a color image can be obtained on the photosensitive paper 3.

Since this exposure method performs exposure on one screen, exposure for one screen can be performed faster than line-sequential exposure.

Also, if the imaging lens 5 is tossed as a zoom lens.

Image enlargement and reduction recording becomes possible.

According to this embodiment, it is possible to form an original image using toner on the surface of the 5-rotation belt 1, and to form this image on the photosensitive paper 3 by sequential exposure, making it possible to record a color image at high speed. It's possible.

Next, another embodiment of the present invention will be described with reference to FIGS. 2 and 3.

2 is a schematic configuration diagram of an optical printer according to an embodiment of the present invention, and FIG. 3 is a schematic front view of a rotary filter section of the optical printer shown in FIG. In the figure, the same reference numerals as those in FIG. 1 are the same parts as in the embodiment of FIG. 1, so the explanation thereof will be omitted.

The embodiment of FIG. 2 has a single light source as the a number of light sources,
It is a good idea to combine this with a rotating filter that can switch the wavelength of the light from the light source to a plurality of wavelengths.

8 rotating filters, as shown in Fig. 3, a disk 10 and filters 11, 12, and 13 that transmit only the light that exposes one of the three colors magenta, cyan, and yellow.
It is made up of.

If the disk 10 is rotated multiple times by the motor 9 and the corresponding filters 11, 12 and 13 are placed in front or behind the imaging lens 5 for exposure of each color, only each color can be exposed. .

According to this embodiment, it is possible to expose the three colors of cyan, magenta, cyan, and yellow using a single fluorescent light source, and it is possible to expect the same effects as in the previous embodiment. can.

In the valley embodiment described above, the rotary belt 1 is used as the original image receptor means for causing the toner to flow and form the original image, and the conveying roller 6 is used as the means for conveying the photosensitive paper.
Although an example has been described in which the pressure roller 7 is used as a pressure applying means for fixing and coloring the microcapsules, the present invention is not limited thereto, and original image receptor means and photosensitive paper conveying means having other shapes and structures may be used. There is no problem even if a pressure applying means is adopted.

〔Effect of the invention〕

As described above, according to the present invention, it is possible to provide an optical printer that uses a toner image as an original image and can directly store a color image on photosensitive paper at high speed without using an intermediate photoreceptor. .

[Brief explanation of the drawing]

FIG. 1 is a schematic perspective view of an optical printer according to one embodiment of the present invention, FIG. 2 is a schematic configuration diagram of an optical printer according to another embodiment of the present invention, and FIG. FIG. 2 is a schematic front view of the rotary filter section of the optical printer shown in FIG. l... Rotating belt 12... Electrode array, 3... Photosensitive paper, 4° 4a, 4b, 4c... Fluorescent lamp, 5...
- Combined lens, 6... Conveyance roller, 7... Pressure roller, 8... Rotating filter.

Claims (1)

[Scope of Claims] 1. An original image receptor means formed by forming a thin film of an insulating layer on a conductive layer, and a method for charging toner on the original image receptor means in accordance with an electric signal to form an original image. A multi-acicular electrode, a means for conveying a photosensitive paper having a surface coated with a group of microcapsules containing a coloring material, and a means for irradiating visible light or ultraviolet light to be transmitted through the original image receptor means, a plurality of light sources for forming a color image by multiple exposures in accordance with the exposure wavelength of each microcapsule on the paper; and a plurality of light sources for transferring the original image of the toner on the original image receptor means onto the photosensitive paper. A light source comprising: an imaging lens for forming an image; and a pressure applying means for fixing and coloring unexposed areas of the microcapsules on the photosensitive paper that are blocked by toner during image formation. printer. 2. In the device described in claim 1, the plurality of light sources are arranged in positions that face the original image receptor means and allow the original image formed by toner to be formed on the photosensitive paper through the imaging lens. Optical printer with multiple fluorescent lights. 3. The optical printer according to claim 1, wherein the plurality of light sources is a combination of a single light source and a rotating filter capable of switching the wavelength of light from the light source to a plurality of wavelengths. . 4. An optical printer according to claim 1, wherein the imaging lens is a zoom lens capable of enlarging or reducing an image.