JPS6211684A - Method for recording multicolor image - Google Patents

Abstract

PURPOSE:To provide a compact recording method for obtaining a multicolor image, by alternately applying three kinds of heats having different temps. and lights having eight kinds of wavelengths to a support, which has a layer having a coupler compound and a basic substance uniformly dispersed therein to which three kinds of microcapsules containing diazonium compounds were applied, three times. CONSTITUTION:A multicolor image recording sheet is formed by a method wherein a coupler compound and a basic compound are uniformly dispersed in a heat-meltable substance 4 to be applied to a support 2 and a uniform mixture comprising microcapsules 7 including diazonium compounds forming colors of cyan, magenta and yellow is applied to the formed layer. When this multicolor image recording sheet is heated to temp. T1 and subsequently irradiated with light having a wavelength lambda1, a cyan color is developed and, when heated to temp. T2 and irradiated with light having wavelength lambda2, a magenta color is developed and, when heated to temp. T3 and irradiated with light having a wavelength lambda3, a yellow color is developed and a multicolor image of cyan, magenta and yellow is formed.

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to a multicolor image recording method, and particularly to a multicolor image recording method that can obtain a multicolor image through a simple process.

In recent years, there has been remarkable progress in increasing the number of colors and increasing the speed of various color printers and color printers for industrial and office use.As a multicolor image recording method compatible with this, it is possible to record multicolor images using a simple process. A method that can obtain the following is desired.

(Summary of the Invention) The present invention uses a diazonium compound that reacts with light and decomposes as cyan, magenta, and yellow pigments to microcapsule them, and further develops a coupler compound that develops color by reacting the capsules with the diazonium compound. t-m
By applying heat at 8 different temperatures and light at 88 different wavelengths to this sheet alternately 8 times, a multicolor image can be obtained in a simple process. This is what I did.

(Prior Art) Conventionally, methods for forming multicolor images such as various color hard copies and color printers include inkjet, thermal transfer, and l! Recording methods such as photocopy and electrostatic recording are known, but inkjet has a major problem of clogging, and other recording methods repeatedly record eight primary color signals from a CRT etc. to create multicolor images. I was getting .

[Problem that the invention seeks to solve]

However, as mentioned above, conventional recording methods are prone to clogging, two-color misalignment due to the need to repeatedly record the signals of the three primary colors, difficulty in increasing the recording speed, and the complexity of the recording device mechanism. There were drawbacks such as:

Therefore, the present invention is designed to solve these drawbacks of the conventional technology.
The object of the present invention is to provide a compact and novel multicolor image recording method that allows multicolor images to be obtained by a simple table process using heat and light.

Means for Solving Problem C] In order to solve the above problems, the present invention microencapsulates a photodegradable diazonium compound that develops colors of cyan, magenta, and yellow.

Furthermore, this capsule is made into a sheet that is uniformly coated on a layer coated with a coupler compound that reacts with a diazonium compound to form a color, and this sheet is alternately exposed to heat at eight different temperatures and light at eight different wavelengths. A multicolor image is obtained by a simple table process by viewing the image eight times.

Below, nine aspects of the present invention will be explained in detail.

The diazonium compound of the present invention that develops each color of diazide, magenta, and yellow is, for example, λ.

, meaning, it reacts to light with a wavelength of λS, decomposes, and ceases to produce color. In addition, this microcapsule can be heated at different temperatures for each color, for example, #Tl eTa eTa (Tl
<Tm <Te Hatake) When the temperature exceeds Tm, the membrane melts and functions like a kind of valve to form a capsule that releases the same content. When a temperature of 1 is applied to the capsule sheet, a cyan diazonium compound is released and reacts with the coupler compound to develop a cyan color. Next, when irradiating light with a wavelength of λ oboro, the result is T.

A cyan diazonium compound that is not heated to this temperature decomposes and no longer develops color. Do the same.

When irradiated with light at a temperature of T and a wavelength of λ, a magenta color develops. When irradiated with light having a temperature of T1 and a wavelength of λ, a yellow color develops and a multicolor image is formed. The diazonium compounds used in the present invention include P-siacy N-ethyl, N-normal probyl aniline chloride zinc chloride double salt, rose-diazo N-ethyl zinc chloride double salt, N-hydroxyethyl meta-toluidine chloride zinc chloride There are double salts, para-diazo-N-tarypulticyclodiscyclolide zinc chloride double salts, and the like.

As a coupler compound, it is a pyrazolone derivative.

β-diketonic acid derivatives, oxydiphenyl derivatives, phenol, resorcinol, furotoglucine, α-naphthol, β-naphthol, dihydroxyna 7 talenoxina 7
Examples include tokuic acid derivatives. Examples of basic substances include pyrazole derivatives-pyrimidine derivatives, indole derivatives, morpholine derivatives, imidazole derivatives, and guanidine derivatives.

These include pyridine derivatives and hydrazine derivatives.

In addition, heat-melting substances include waxes such as paraffin wax, montan wax, carnauba wax,
Examples include polyethylene wax and propylene wax.

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

FIG. 1 is a schematic diagram of a multicolor image recording sheet of the present invention,
A coupler compound and a basic substance are uniformly dispersed and coated in a heat-melting substance on a support.

Furthermore, microcapsules containing diazonium compounds that develop colors of cyan, FF zenta, and yellow are uniformly mixed and coated on top of this.

Figure 2 is a schematic diagram showing a multicolor side image being recorded using the multicolor image recording sheet shown in Figure 1.When heated to a temperature of e''l and then irradiated with light of a single wavelength, A cyan color is obtained, and then, when heated to a temperature of T and irradiated with light of wavelength λ, a magenta color is obtained and a cyan and magenta image is formed.Further heated to a temperature of t, When irradiated with light having a wavelength of λ, a yellow color is obtained, and a multicolor image of cyan, magenta, and yellow is formed.

FIG. 8 is a schematic diagram of an embodiment of an apparatus for recording a multicolor image using the multicolor image recording sheet shown in FIG.
A laser beam is used as a means of heating to the temperature of a Tg @ Tl.

FIG. 4 shows an embodiment of a multicolor image recording apparatus similar to that shown in FIG. 8, in which a thermal head is used as a means for heating the device to a temperature of pTl, mT, and tTl.

(Effects of the Invention) As described above, the present invention microcapsules a diazonium compound, which is a photodegradable dye, and further coats the capsules on a layer coated with a coupler compound that develops color by reacting with the diazonium compound. By using a specially engineered sheet, a multicolor image can be obtained through a simple process of alternating temperature and light eight times, resulting in a high recording speed and the ability to make the device more compact. Pictures can be provided.

[Brief explanation of the drawing]

Figure 1 shows a multicolor image recording sheet (1) of the present invention, and Figure 2 is a schematic diagram showing a multicolor image being recorded using the sheet shown in Figure 1. FIGS. 8 and 4 show an apparatus for recording a multicolor image using C) 1 of FIG. 1. 10. Multicolor image recording sheet 20. Support 860 Coloring layer 40. Thermofusible substance 60. Coupler compound 68. Basic substance 7, Microcapsule 80. Pinch roller - 9*m Laser beam 1t10s to temperature TH
sT, #trll,
, Tl 11 120. Light source 136 with wavelength λ. Light source 14z/F λ, 1 150. Support stand 160. Pinch roller 170, pinch roller 1811@Thermal head 19** to temperature of TH
Tl l 120,, Tg #
#21゜, platen roller 22, I Otsu 0. 〃 24°, wavelength λ, light source 5°l λ, I a0. 〃 λ1 〃 270. Pinch roller - Applicant: Seiko Electronics Industries Co., Ltd. Figure 2-11

Claims (3)

[Claims] (1) Three types of microcapsules each containing a diazonium compound that develops cyan, magenta, and yellow colors as a core substance are uniformly coated on a layer in which a coupler compound and a basic substance are uniformly dispersed. A multicolor image recording method comprising forming a multicolor image by alternately applying heat at three different temperatures and light at eight different wavelengths three times to a prepared support. (2) A multicolor image recording method according to claim 1, characterized in that the diazonium compound decomposes in response to light of different wavelengths for each color of cyan, magenta, and yellow. (3) The multicolor image recording method according to claim 1, wherein the microcapsules release their contents at different temperatures for each color of cyan, magenta, and yellow.