JPH0369944A - image forming device - Google Patents

Abstract

PURPOSE:To obtain a good-quality image with a simple mechanism by letting capsule toner stick to color developer toner when the color developer toner heated by a heating means becomes sticky. CONSTITUTION:A color developer toner image on a photosensitive drum 31 is transferred to a recording medium 41 by a transfer corotron 35 and the recording medium 41 to which the color developer toner 32 is transferred is conveyed by a conveying roller 43 and heated by a heater 38. Then, the capsule toner 33 is stuck to the color developer toner 32 which has stickiness by a capsule toner developing unit 39. Thus, the image is formed on an optional recording medium and deviation between the capsule toner 33 and the color developer toner 32 is prevented, thereby obtaining a good-quality image with simple constitution.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to an image forming apparatus that forms an image on any recording medium using a photosensitive microcapsule toner and a color developer toner. .

[Prior Art] Conventionally, a copying device has been proposed that records an image by applying a photosensitive microcapsule toner containing a primary color body and a developer toner that reacts with the primary color body to develop color onto an arbitrary recording medium. ing.

[Problems to be Solved by the Invention] However, in the conventional copying apparatus, when developing the photosensitive microcapsule toner (hereinafter referred to as capsule toner) on the developer toner that is first developed on the photoreceptor, It is difficult to superimpose images on the same image, and there is a problem in that accurate superimposition requires a complicated apparatus and increases costs.

Further, when transferring the capsule toner and the developer toner onto the recording medium, there is a problem in that the two toners shift, resulting in image deterioration.

The present invention has been made to solve the above-mentioned problems, and is characterized by using a heat-melting color developer toner and depositing a photosensitive capsule toner on the heated color developer toner. The object of the present invention is to provide an image forming apparatus that has a simple mechanism and can produce high-quality images.

[Means for Solving the Problems] In order to achieve this object, the image forming apparatus of the present invention includes a heat-fusible color developer toner that reacts with a primary color body to form a color, and a recording medium that uses the color developer toner. a transfer means for transferring onto the
a heating means for heating the developer toner after being transferred onto a recording medium; an adhesion means for depositing a photosensitive microcapsule toner containing a primary color substance onto the developer toner heated by the heating means; and a recording medium. and means for developing the medium.

[Function] In the image forming apparatus of the present invention having the above configuration,
An image is formed using the developer toner, and the developer toner image is transferred onto the recording medium. Then, the capsule toner is attached to the area where the color developer toner becomes sticky after being heated by the heating means.

Thereafter, exposure and pressure development is performed to form an image.

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

FIG. 1 is a sectional view schematically showing an image forming apparatus of the present invention. Inside the image forming apparatus 1, there is a first exposure system 2 for exposing a reflected image of a document 21 onto a photoreceptor drum 31, which will be described later.
, a first developing system 3 for developing the electrostatic latent image on the photoreceptor drum 31 with a developer toner 32 containing a thermoplastic resin, and depositing a capsule toner 33 on the developer toner 32;
A conveyance system 4 that conveys an arbitrary recording medium 41, a second exposure system 5 that exposes a reflected image of the original 21 onto the recording medium 41 coated with capsule toner 33 and developer toner 32, and a latent image recorded. a second developing system 6 for developing the recording medium 41 carrying the capsule toner 33 and the developer toner 32;
and a document table drive system 7 for slit scanning the document 21.

The first exposure system 2 includes a light source 22 for irradiating light onto the original 21, a slit 23 for performing slit line exposure, and a lens 24 for forming and exposing a reflected image of the original 21 onto the photoreceptor drum 31.

The first development system 3 includes a photoreceptor drum 31 that records an electrostatic latent image by exposure, and a color developer toner developer that develops the electrostatic latent image on the photoreceptor drum 31 along the rotational direction of the photoreceptor drum 31. 34, a transfer corotron 35 for transferring the developer toner 32 on the photoreceptor drum 31 onto the recording medium 41, a static elimination lamp 36, a charging corotron 37, an adhesive to the developer toner 32 transferred onto the recording medium 41; It consists of a heater 38 for imparting color to the toner, and three capsule toner developers for attaching the capsule toner 33 onto the heated color developer toner 32.

The transport system 4 includes a cassette 4 that supplies an arbitrary recording medium 41.
2. Consists of a conveyance roller 43 that conveys the recording medium 41.

The second exposure system 5 includes a light source 51 that irradiates light onto the original 21, a slit 52 for performing line exposure, and a slit 52 that focuses a reflected image of the original 21 onto a photosensitive microcapsule 33 coated on an arbitrary recording medium 41. Lens 53 for image exposure, original 21
It consists of a mirror 54 that changes the optical path for the purpose of correcting the positional deviation between the recording medium 41 and the recording medium 41.

The second developing system 6 includes a developing device 61 that develops an arbitrary recording medium 41 carrying exposed photosensitive microcapsule toner 33 and color developer toner 32, and a developing device 61 that develops an arbitrary recording medium 41 carrying the exposed photosensitive microcapsule toner 33 and color developer toner 32, and a developing device 61 that develops an image on the developed arbitrary recording medium 41. It consists of a heat fixing device 62 for fixing and a paper discharge tray 63.

The document table drive system 7 includes a document table 71, a drive wire 72 fixed to the document table, a drive pulley 73, and a drive motor 74.

Next, the operation of the image forming apparatus of this embodiment will be explained with reference to FIG.

First, light is irradiated onto the original 21 through the slit 23 by the light source 22 of the first exposure system. The reflected image of the document is exposed onto the charged photosensitive drum 31 by the lens 24, thereby forming an electrostatic latent image. This electrostatic latent image is developed with a developer toner 32 supplied from a developer toner developer 34. The color developer toner 32 contains a thermoplastic resin such as polystyrene, styrene-acrylic copolymer, or polyester, and has the property of becoming sticky when heated. The photoreceptor drum 31 rotates in synchronization with the movement of the document platen 71, and an electrostatic latent image of the document 21 is developed on the photoreceptor drum 31. At the same time, the conveyance roller 43 is rotated in synchronization with the rotation of the photoreceptor drum 31. The developer toner image on the photosensitive drum 31 is transferred by the transfer corotron 44 onto the recording medium 41 fed from the paper feed cassette 42 . After the transfer, the photosensitive drum 31 is neutralized by a static eliminating lamp 36 and charged by a charging corotron 37 in preparation for exposure of the next document. The recording medium 41 to which the color developer toner 32 has been transferred is
The developer toner 32 is transported by a transport roller 43 and heated by a heater 38 set at a predetermined temperature that makes the developer toner 32 sticky. Capsule toner 33 is adhered by capsule toner developer 39 onto developer toner 32 which has been heated by heater 38 and has become sticky.

Next, the recording medium 41 to which the developer toner 32 and the capsule toner 33 are attached is conveyed to the second exposure system 5 by a conveyance roller 43, and enters the process of exposing the capsule toner 33 to form a latent image.

In the first developing system 3, the document table 71 moves in synchronization with the capsule toner developing device 39 depositing the capsule toner 33 on the recording medium 41, and the light source 51 of the second exposure system 5 21 secondary exposure is started. Light is irradiated onto the original 21 from the light source 51 through the slit 52 . The reflected image of the original is imaged by a lens 53 on an arbitrary recording medium 41 carrying a toner image via a mirror 54.
Secondary exposure is performed. At this time, the movement of the document table 71 and the movement of the arbitrary recording medium 41 are synchronized. The mirror 54 functions to correct the exposure position so that the position of the image on the original 21 matches the position of the toner image corresponding to the original image on any recording medium 41. The trend of secondary exposed photosensitive microcapsule toner 33 has already been reported in Japanese Patent Application Laid-Open No. 58-887.
A latent image is formed by exposure, although it will not be described in detail since it is described in Japanese Patent No. 39. After the secondary exposure, the arbitrary recording medium 41 carrying the toner image on which the latent image is formed is exposed to the second
It is transported to the developing system 6. The developing device 61 uses a pressure roller in this embodiment, and the arbitrary recording medium 41 is
While the book passes between opposing pressure rollers, the photosensitive microcapsule toner 33 on any recording medium 41 is pressurized and destroyed, and depending on the degree of exposure, primary color bodies are released from the microcapsule toner 33 and a color developer is released. It reacts with the toner 32 to develop color, and recording is performed on an arbitrary recording medium 41.

Thereafter, any recording medium 41 on which recording has been performed is fixed by a thermal fixing device 62 and discharged onto a paper discharge tray 63, thereby completing the entire recording process.

[Effects of the Invention] As is clear from the above detailed description, according to the present invention, an image can be formed on any recording medium, and the capsule toner and the developer toner are not misaligned. The effect is that high-quality images can be obtained with a simple configuration.

[Brief explanation of drawings]

The drawing is a sectional view schematically showing an image forming apparatus of the present invention. In the figure, 32 is a developer toner, 33 is a photosensitive microcapsule toner, 35 is a transfer corotron, 38 is a heater, and 39 is a capsule toner developer.

Claims (1)

[Claims] 1. A transfer means for transferring a heat-fusible color developer toner that reacts with a primary color body to form a color onto a recording medium based on image information; and a heating means for heating the color developer toner after being transferred onto the recording medium. An image forming method comprising: an adhering means for adhering a photosensitive microcapsule toner containing a primary color substance onto the developer toner heated by the heating means; and a means for developing the recording medium. Device.