JPS6184286A - Transfer mask sheet - Google Patents

Abstract

PURPOSE:To ensure favorable transferrability and enable printing with high quality, by adding a specified amount of a specified substance to a surface roughening layer of a sheet. CONSTITUTION:A surface roughening layer and a vapor-deposited metallic layer 303 are sequentially provided on a base 305 to produce the transfer mask sheet 302, in which stannic oxide is incorporated in the surface roughening layer in an amount of 30-80wt% based on the total weight of solid components. For example, a surface roughening layer having a thickness of about 10mum is provided on a polyester film having a thickness of 25mum by using a pigment having an average particle diameter of 0.5-0.8mum. Further, a vapor-deposited aluminum layer 303 having a thickness of 500Angstrom is provided thereon by vacuum deposition to produce the transfer mask sheet 302.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a recording paper used in a recording device that converts electrical signals into visible images and records them.

2. Description of the Prior Art Structures and Their Problems In recent years, with the development of office automation, various terminals have been required. Among these, recording devices that convert electrical signals into visible images, so-called printers, are in great demand, but there are few that are satisfactory in terms of performance. Among various recording devices, discharge breakdown recording devices are generally widely used because they are excellent in high speed and record preservation.

The discharge breakdown recording device is a discharge breakdown recording paper consisting of a vapor deposited aluminum layer, a black layer, and a base paper layer.The vapor deposited aluminum layer of the discharge breakdown recording paper is grounded, and an electrode to which a voltage is applied is brought into contact with this vapor deposited hot layer, and the contact portion is heated or discharge breakdown occurs. The vapor-deposited aluminum is removed and the underlying black layer is exposed for printing. Therefore, in order to write well, use a wire (as shown in Figure 1d).
A write electrode is made to expose the electrode needle (11) and ensure contact. 12 is a fixed part of Vi, and 13 is a lead. If the electrode needles are not exposed (protruded) as shown in Figure 1, the area around the electrode needles 14 will be destroyed, the dust generated during recording will be twisted, and the insulation between the electrode needles will be damaged, resulting in poor quality. I can't write.

Therefore, it was necessary to make the electrode needle protrude and to make it strong, so it was necessary to use something thick and hard. Therefore, it was not possible to increase the resolution.

In order to solve this problem, an electrode head in which the electrode needle is fixed with a sintered body of hexagonal boron nitride has been proposed. When this electrode head was used to print on electrical discharge rupture paper whose roughened layer contained carbon, high quality printing was continuously obtained. However, when printing was performed on a plastic sheet (hereinafter referred to as a transfer mask sheet) which did not contain carbon in the roughened layer and had good light transmittance as a support, it was difficult to obtain good printing. This is thought to be due to differences in the surface smoothness of the paper and plastic supports, the permeability of the binder, and the presence or absence of carbon in the roughened layer, but conventional transfer mask sheets have a high resolution. This seems to be due to the lack of appropriate support for printing images.

FIG. 2 shows a cross-sectional view of the transfer mask sheet.

202 is an aluminum vapor deposition layer, 203 is a roughened layer,
204 is a support.

When high-resolution printing is realized on this transfer mask sheet by electric discharge, copying using a flash becomes possible, as shown in FIG. In FIG. 3, 301 is an image receiving paper, 3o2 is a transfer mask sheet, 306 is a heat-melting ink sheet, 30 is a support for the ink sheet, 308 is a heat-melting ink, 309 is a Flash 301 is ink after transfer.

Here, as with conventional discharge recording paper, holes are first made in the aluminum vapor deposited layer 303 of the transfer mask sheet by electric discharge from electrode needles, and then the thermofusible ink is heated and melted by a flash of light passing through the holes. The receiver is transferred onto paper 301.

However, a transfer mask sheet with good print quality has not been obtained.

OBJECTS OF THE INVENTION An object of the present invention is to provide a transfer mask sheet that has good transferability and enables high-quality printing.

Structure of the Invention The transfer mask sheet of the present invention is a transfer mask sheet in which a roughened layer and a metal vapor deposited layer are sequentially provided on a support, and stannic oxide is added to the roughened layer in a solid content of 3 to 80%. wt
%, and as a result, a transfer mask sheet that enables high-quality printing and has good transferability can be obtained. Further, even better transfer can be obtained by using paper or a plastic sheet with good heat resistance and light transmittance as the support.

Description of Examples Examples of the present invention will be described below with reference to comparative examples.

Example 1 A dispersion having the formulation shown in Table 1 was applied to a polyester film with a thickness of 26 μm to form a roughened layer with a thickness of about 10 μm. A pigment having an average particle size of 0.5 to 0.8 μm was used. there was. Furthermore, an aluminum vapor deposition layer having a thickness of 600 layers was provided thereon by a vacuum evaporation method to produce a transfer mask sheet.

An electrode head with a resolution of 10 lines/20 pins and a recording needle fixed with a sintered body of hexagonal boron nitride was used on the transfer mask sheet shown in Margin Table 1 below, and a recording voltage of 40V1.6rrL/sec was applied.
Discharge breakdown recording was performed under the recording conditions of a speed of , and a transferable mask sheet was obtained.

The resulting transfer mask sheet was layered with a hot-melt ink sheet (melting point 68°C) manufactured by Fuji Kagaku Paper Industries Co., Ltd., and then copy paper was layered on the ink side of the hot-melt ink sheet, ) was transferred onto copy paper using the Canon flash light of FX-180, and the results shown in Table 2 were obtained.

Table-2 Yellow 1...Microscope observation ◎Dots are clear.

〇Some parts are missing be.

Irregular X-dot shape.

■2...Evaluation of 5 character pattern after continuous printing of 41 black solid A-sheets ◎ Characters are clear.

○Even if it's blurry at first.

Recovered quickly.

×I can't write due to short circuit.

■3... Strength of transfer energy 0 Weak ○ Normal × Strong As is clear from the results in Table 2, the composition containing 60 wt% of the solid content of stannic oxide has less dot breakage. The continuous printability was also good, and the characters obtained after transfer were clear. On the other hand, in the comparative example, the dot shape was irregular, molten aluminum adhered to the tip of the electrode head, solidified and became a scanning line, and many scratches were generated on the aluminum surface.
2 was comparatively better than 1, or the dots appeared blurry, and there were also problems with continuous printing. The reason why the dot shape of 1-3° and 1-4 is particularly bad is because the recording electrode needle is
This is thought to be due to the fact that after the aluminum evaporated film is destroyed by discharge, it touches the highly insulating river surface layer and the current is abruptly cut off, resulting in large spark noise, generating unnecessary energy, and making it difficult to cut the dots.

Example 2 The same study as in Example 1 was conducted by changing the content of stannic oxide. Table 3 shows the studied compositions. The stannic oxide used had an average particle size of 0.8 μm.

A dispersion having the formulation shown in Table 3 was applied to a 26 μm thick polyester film to a thickness of 10 μm, and 500A aluminum was vapor-deposited to obtain a mask transfer sheet.

Printing was performed using the same electrode head and recording conditions as in Example 1.
It was transcribed and evaluated. Table 4 shows the results.

Table-4 Stannic oxide or 2-1 with a solid content of 20 wt% is
The shape of the dots became irregular and omissions due to discharge errors occurred, and the stannic oxide was 90 wt% of the solid content.
Sample No. 6 also had a weak adhesive strength with the polyester film, and molten aluminum adhered to the tip of the recording needle, resulting in a marked decrease in continuous printing performance. Therefore, the content of stannic oxide is more preferably 30 to 80 wt% of the solid content.
0~e.

In the above example, the support was a polyester film, but the support is not limited to polyester, and any sheet with good light transmittance may be used. ,anything is fine.

Effects of the Invention As is clear from the above explanation, the present invention has the advantage of adding stannic oxide to the roughening layer of a transfer mask sheet in which a roughening layer and a metal vapor deposition layer are sequentially provided on a support. 3Q~80wt
%, it is possible to obtain excellent printing quality and transferability. Due to this effect, high-resolution characters and figures can be easily copied.

Furthermore, if a sheet having heat resistance and good light transmittance is used as the support, it is possible to obtain a high-quality transfer and to make a large number of copies.

[Brief explanation of drawings]

Figure 1a is a perspective view of a conventional electrode head;
FIG. 2 is a perspective view of the electrode head used in the present invention, FIG. 2 is a sectional view of the transfer mask sheet of the present invention, and FIG. 3 is a diagram showing the transfer method of the present invention. 101.104...electrode, 1o2...fixing part, 103...lead, 201.302...
...Transfer mask sheet, 202,3os...Atsubenium vapor deposition layer, 204,305...Support, 306...Thermofusible ink sheet, 3o7...
... Support for ink sheet, 308 ... Heat-melting ink, 3o9 ... Flash, 310 ...
... Ink after transfer, 301 ... Image receiving paper. Name of agent: Patent attorney Toshio Nakao and 1 other person No. 1
Figure 2 Figure 3

Claims (2)

[Claims] (1) A transfer mask sheet in which a roughened layer and a metal vapor deposition layer are sequentially provided on a support, and the roughened layer contains 30 to 80 wt% of stannic oxide in solid content. Transfer mask sheet. (2) The transfer mask sheet according to claim 1, wherein the support is a heat-resistant, light-transmitting paper or a plastic sheet.