JPS636552A - Color image recorder - Google Patents

Abstract

PURPOSE:To record a highly precise color image at a high speed by attaching a microcapsule which develops different colors by responding to light beams of specific wavelengths to a carrying means, and projecting a toner image being on a photosensitive plate, onto its carrying means. CONSTITUTION:A photosensitive plate 14 is scanned by a laser light 24 which is modulated by an image signal, and subsequently, brought to a toner development 19, and a toner image is formed with regard to each of three colors. Thereafter, the photosensitive plate 14 is moved to a projecting position. Subsequently, the toner image of each color of the photosensitive plate 14 is projected onto a dielectric belt 1 by a projection lens 13, etc. To its dielectric belt 1, a microcapsule 3a of a different color, which responds to a light beam of a specific wavelength is allowed to adhere by a capsule supplying device 3. Next, a latent image is formed by projecting the toner image of each color to the microcapsule 3a on the dielectric belt 1, and sent to a developing device 7. By this device, a color image is formed by developing a receiver sheet 4 to which a developer is applied. Accordingly, since the toner image is projected to a carrying means to which the microcapsule is allowed to adhere, the color image can be obtained in a short time.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a color image recording device that prints a color image on paper.

[Summary of the invention]

The present invention projects a toner image formed on a photosensitive plate in accordance with an image signal onto a conveyance means to which microcapsules of a plurality of different colors are attached, and the coloring fourth degree changes in response to light of a specific wavelength. By doing so, high-definition color images can be obtained at high speed.

[Conventional technology]

Conventionally, inkjet,
Color printers using methods such as thermal transfer are widely known.

[Problem that the invention seeks to solve]

However, in these types of printers, l
Since recording is performed line by line or several lines sequentially, it takes a considerable amount of time to record on the entire surface of the paper, which is a problem that becomes particularly noticeable when the pixel density is increased.

[Means for solving problems]

The present invention aims to solve these problems and provide a new color image recording device that can print high-definition color images at high speed. Toner image forming means such as a laser beam scanning unit and an electrophotographic processing unit for creating an image, and microcapsules encapsulating color formers of different colors and a sensitive substance that immobilizes the color formers by being sensitive to light of a specific wavelength. , a conveying means for conveying the microcapsules, a projection means for projecting the toner image onto the conveying means, and a developing means for destroying the microcapsules and causing the coloring material to develop color.

(Operation) A thin film of microcapsules is formed by depositing photosensitive microcapsules on a conveying means in the form of a belt or drum.Also, toner image forming means such as a laser beam scanning unit and an electrophotographic process unit Charging, laser light exposure, toner development, etc. are performed on the microcapsules, and toner is selectively deposited on the photoreceptor according to an image signal to form a toner image. For example, the microcapsules develop colors of cyan, magenta, and yellow. In the case of three types of toner images, three types of toner images are formed on the photoconductor according to the color separation image signals of cyan, magenta, and yellow.Then, the toner images on the photoconductor are transferred to a light source and a projection lens. The toner image is projected onto the thin film-like microcapsules on the conveying means by a projection means such as the above.At this time, when a toner image formed according to a cyan image is projected, it is projected by light having a wavelength to which the cyan coloring microcapsules are sensitive. Since magenta coloring microcapsules and yellow coloring microcapsules are not sensitive to light at the wavelength to which cyan coloring microcapsules are sensitive, when projecting a toner image formed according to a zero-order magenta image signal that is not affected,
Projection is performed using light at a wavelength to which the magenta coloring microcapsules are sensitive. The same applies to yellow. By sequentially projecting the three projected images onto the same position of the thin film microcapsules formed on the conveying means, the curing of the three colored microcapsules is controlled. The image shows a cured capsule,
Formed as a latent image consisting of uncured capsules. Thereafter, by destroying the FINi-like microcapsules on a sheet containing a developer, the coloring material flowing out from the uncured microcapsules develops color, and a color image is formed on the sheet.

〔Example〕

Embodiments of the present invention will be described below based on the drawings.

FIG. 1 is a cross-sectional view of an apparatus showing an embodiment of the present invention. In the figure, reference numeral 1 is a belt made of a dielectric material, which is guided by guide rollers 8 and 30 to carry the developing device 7 and the capsule feeding device 3. It is structured in a circular loop. 3 is a capsule feeding device, as shown in FIG.
z, az, and a different wavelength λ1 for each color precursor.
λ2. It contains microcapsules in which a sensitive composition (s), bt, b, which changes its viscosity and immobilizes a coloring precursor by being sensitive to light of λ, is surrounded by a thin film C of gelatin or the like. 4 is a receiver sheet, and as shown in FIG. 4, the surface of the sheet F is coated with a developer E that develops color by reacting with a coloring precursor al+"!+a3. 1 side is configured to face the developer layer and be pressurized at the position of the developing device 7. 14 is a photosensitive plate, which is made by laminating a photoreceptor such as selenium on a substrate; The photosensitive plate 1 is movably guided by a guide rail 16 via a support member 15, and is moved to a second position by a drive mechanism (not shown).
4 along the moving path of the toner developer 19. Charger 20.
Static elimination lamp 21. An electrophotographic unit consisting of a cleaning blade 22 is provided. Further, a semiconductor laser 27 for scanning laser light in a direction perpendicular to the moving direction of the photosensitive plate 14. Polygon mirror 26. Fθ lens 25
．． A laser beam scanning unit consisting of a mirror 23 is provided. Further, a projection lens 13 . Half mirror 17, condenser lens 1
2. Filter 9. A lamp 10° concave mirror 11 is provided.

The printing operation will be explained below.

The dielectric belt l is connected to a corona charger 28 provided on the path.
is uniformly charged. The charged dielectric belt 1 then enters the capsule feeding device. Therefore, dielectric belt 1
Microcapsules adhere to the surface due to electrostatic force. The adhered excess microcapsules are scraped off by a doctor blade provided close to the dielectric belt l-1, and a thin film of microcapsules is formed on the dielectric belt.

The angry light Fi 14 is uniformly charged by a charger 820 while moving along the guide rail 6, then subjected to scanning exposure of a laser beam modulated by an image signal, developed with toner by a toner developer 19, and then applied to a photosensitive plate 14. A toner image is formed thereon. As shown in FIG. 2, three toner images, a toner image for cyan exposure, a toner image for magenta exposure, and a toner image for yellow exposure, are formed on the photosensitive plate 14 according to the three color separation signals of cyan, magenta, and yellow. It is formed.

Thereafter, the photosensitive plate 14 is blown with air by an air nozzle 18 to evaporate the solvent deposited during toner development and dry it. Thereafter, the photosensitive plate 14 moves to the projection position of the projection lens 13 and remains stationary, and first the cyan exposure toner image 14c is
Sensitive composition bI0 of cyan coloring microcapsule A1
) is projected onto the dielectric bell () 1 to which the microcapsules are attached by light having a sensitive wavelength λ. The wavelength of the projection light is selected by replacing a filter provided in the middle of the optical path. The microcapsules A1 are hardened in the areas on the dielectric belt 1 that are exposed to the light of wavelength λ1, and no color develops even during subsequent development, and a cyan latent consisting of hardened and unhardened capsules is left on the dielectric belt 1. 0 where the image is formed
Next, the magenta exposure toner image 14d is projected onto the dielectric belt 1 by light of the sensitive wavelength λ□ of the sensitive composition b2 of the magenta coloring microcapsules A, thereby forming a magenta latent image. The same applies to yellow. cyan,
Magenta.

By sequentially projecting three yellow projection images onto the same position on the dielectric belt 1, a color image is formed on the dielectric belt 1 as a latent image consisting of cured capsules and uncured capsules. Further, the photoreceptor 14 is cleaned by the cleaning blade 22, the electric charge is removed by the static elimination lamp 21, and the photoreceptor 14 returns to its initial state. The dielectric belt 1, on which a latent image has been formed by being exposed three times in a stationary state, is sent to a developing device 7. The developing device 7 presses the dielectric belt 1 and the receiver sheet 4 by sandwiching them between two rollers 7a and 7b. Among the microcapsules on the dielectric belt 1, the microcapsules that are not sensitive to light and have not been cured are destroyed by pressure, and the coloring precursor inside the capsules is discharged to the receiver sheet 4, and the microcapsules exit the developing device 7. Microcapsules remaining on the surface of the dielectric belt 1 are removed by a cleaning blade 29, and the receiver sheet 4 is heated by a heat roller 6, so that the coloring precursor al+ seeped onto the receiver sheet 4.
a2. The reaction between a and the developer E rapidly progresses to produce a color corresponding to the image signal, and a color pattern corresponding to the input signal is printed. The electrophotographic process and laser beam scanning unit for forming a toner image in this embodiment can be constructed from conventionally known ones. In addition, by changing the magnification of the projection lens, it is easy to reduce the image to 1 equal magnification or to enlarge it. Further, in this embodiment, the 18-light plate moves along a guide rail, but the same effect can be achieved even if the photoreceptor is formed into a belt and circulates.

【Effect of the invention〕

As explained above, according to the present invention, since printing can be performed simultaneously over the entire surface of a sheet, a color image can be output in an extremely short period of time.

[Brief explanation of drawings]

FIG. 1 is a sectional view of an apparatus showing one embodiment of the present invention, and FIG.
Figures (a) and (b) are a plan view and a sectional view showing a photosensitive plate used in the above device. FIG. 3 is a schematic diagram showing a microcapsule. FIG. 4 is a sectional view showing the receiver sheet. l... Dielectric belt 4... Receiver sheet 7... Developing device 13... Projection lens 14...
Applicant for photosensitive plates and above Seiko Electronic Industries Co., Ltd. Agent Patent attorney Tsutomu Mogami (and 1 other person) -** Ir
J-t,, t-r*t*i Ko C21 Figure 1 Kokai 1 indication ■ Chikumazu Figure 2 (A) Ikemitsu version Lt-4' striking surface diagram Figure 2 (B)

Claims (1)

[Claims] Microcapsules enclosing color formers of different colors and a sensitive substance that immobilizes the color formers in response to light of a specific wavelength, a transport means for attaching the microcapsules to the surface and transporting them, and toner toner on the photoreceptor according to image signals. A color image recording device comprising a toner image forming means for forming an image, a projection means for projecting the toner image onto the conveying means, and a developing means for destroying the microcapsules and causing the coloring material to develop color.