JPH035196A - Thermosensitive stencil paper - Google Patents

Abstract

PURPOSE:To obtain a negative form plate, in which a boring section and a non-printing section are discriminated distinctly, by coloring either one layer except a porous sheet in layers constituting stencil paper or forming a metallic film. CONSTITUTION:A coloring agent is mixed into at least one layer except a porous sheet in composing layers and the layer is colored. Consequently, when a demarcating section is bored by a thermal head, a negative image, a non- printing section (the color of a fabric) of which is colored, can be shaped easily. A metallic film is formed onto one surface (except the exposed surface of the porous sheet) of at least one layer of the composing layers. Accordingly, when the demarcating section is bored by the thermal head, the non-printing section (the color of the fabric) can be recognized as a colored negative image having a metallic color by reflection by the metallic film. A proper resin such as a polyester group resin is used selectively as an adhesive layer. Polyvinyl chloride, etc. are employed and a single polymer, a copolymer, and these blend are cited as a thermoplastic-resin film layer. A pigment, dyes, etc. are used as the coloring agent. A metal such as Al, Cr, etc. is mounted through an evaporation method as a means through which the metallic film is formed.

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention enables direct printing by a printer using a thermal head such as a wort processor, and can be used for simple printing a typified by a printer for printing (for example, It is installed on the Print Gosoko manufactured by Riso Kagaku Kogyo Co., Ltd. (hereinafter referred to as the F-saving printing machine), and can print about 100 sheets, especially -
The application of ink during multicolor printing with a plate is related to heat-sensitive stencil paper, which has excellent workability.

<Technology from the 45th century><Problems to be solved by the invention> Recently, simple printing of about 100 New Year's cards etc. has been carried out using heat-sensitive stencil paper made of a combination of a porous sheet and a thermoplastic resin film. ing. The following method was used to create the manuscript in this case.

In other words, you can either print out the edited version from a word processor, then use it directly as a manuscript, or you can retake the edited version using RPC and use it as a manuscript, and then place a stencil on top of the original. Then, flash printing was performed from above using a half-flassoche.

Another method is to print out postcards one by one using a word processor. However, such methods have the problem of being troublesome, time-consuming, and expensive.

In response to this, the present inventors have previously proposed an original plate that can be directly printed by a printer using a thermal head such as a saw 1ζ processor. The outline is that it is easy to print by using a piece of regular base paper pasted with reinforcing paper on one side of which the printing area can be cut out, and printing can be done by cutting out the printing area of the reinforcing paper. It is.

However, since the structure of the base paper was the same as before, it was not possible to clearly distinguish between printed and non-printed areas, and it was difficult to arrange the ink when performing simple printing. It was difficult to perform multicolor printing.

That is, in an original plate having a printed portion perforated by a thermal head, the contrast between the printed portion and the non-printed portion cannot be clearly distinguished from each other.

On the other hand, when performing multi-color printing on the negative plate, it is necessary to select inks of different colors corresponding to the printing area before printing and apply them to the original plate in step 7. However, in original plates using conventional heat-sensitive stencil paper, the printed areas cannot be clearly distinguished as mentioned above, so in the printing process, a different color of ink is applied to each printed area on the original plate for better workability and efficiency. It's difficult to include this person.

<Means for solving the problem> In view of the actual situation as described in the present invention υ translation 2, as a result of G'A Ikenjun,
This relates to the base paper for thermal stencils described below.

The invention of claim 1 is a heat-sensitive stencil paper made of a porous sheet and at least an adhesive layer and a thermoplastic resin film layer sequentially provided on one side of the base paper, in which layers other than the porous sheet among the layers constituting the base paper are provided. A heat-sensitive stencil paper, characterized in that any one of the layers is colored, and the invention of claim 2 provides at least an adhesive layer and a thermoplastic resin film layer sequentially on one side of the porous sheet. A base paper for heat-sensitive stencils, characterized in that a metal film is provided on one side of any one of the layers constituting the base paper (excluding the exposed surface of the porous sheet 1-). It is the original paper.

2), if the thermoplastic resin film layer is made of 4) having moldability such as a foam resin or a silicone resin, it is left as is, but if not, a stain prevention layer is separately provided on its surface.

<Function> In the invention of claim 1, at least one of the constituent layers other than the porous sheet is colored by mixing a coloring agent therein, so that when the image area is perforated with a thermal head,
A negative image in which the non-printed area (ground color) is colored can be easily created, the printed area can be easily visualized as a negative image, and the printed area and the non-printed area can be clearly distinguished. .

Incidentally, if the porous sheet I is colored, it is difficult to distinguish between the printed area and the non-printed area, and there is no effect.

The invention of claim 2 is one in which a metal film is provided on one side (excluding the exposed surface of the porous sheet) of one of the constituent layers, and when the printed area is perforated with a thermal head, non-printing occurs. Due to the irregularities caused by the metal film, the printed area can be recognized as a colored negative image with a metallic color, and the printed area can be easily visualized as a negative image, making it easy to distinguish between the printed area and the non-printed area. In this case, it will be easily understood that providing a metal film on the exposed surface of the porous sheet has no effect at all.

According to the present invention, in any of the cases described in 11; It's something you get.

The constituent materials of the heat-sensitive stencil paper used in the present invention will be explained below.

Porous saws are made from natural fibers such as mitsumata, kozo, and manila hemp, and synthetic fibers such as rayon, polyhinyl alcohol, and polyester.
Alternatively, a nonwoven fabric or a woven fabric may be used, but the material is not limited thereto.

As the adhesive layer, an appropriate one such as L1 polyester resin, polyhinyl acetate resin, polyvinyl chloride resin, polyacrylic resin, etc. can be used.

Next, examples of the thermoplastic resin film layer include those below δ.

Polyvinyl chloride, polyhynylidene chloride, polyvinyl acetate, polyvinyl acecool, polystyrene, polycarbonate, polyester, polyamide, cellulose acetate, ethyl cellulose, acrylic resin, fluororesin, silicone resin, etc. can be used as instant polymers or copolymers. Polymers, their Frene I
- Examples include, but are not limited to, things.

Any face known as a colorant? i), dyes, etc. are used.

Further, as the means for providing the metal film, a metal such as AI or Cr may be provided by a vapor deposition method, a metal film may be provided by a plating method, or furthermore, a metal film may be provided by an ion plating method.

When printing with a word processor, a reinforcing paper is pasted on the surface of the porous sheet of the base paper of the present invention so that the area to be printed can be cut out, and an ink-impermeable sheet is further placed on at least one side of the periphery of the reinforcing paper. Kokichi with `` is preferred. In this case, the main 111 strength 11E is stiffness 3 ~] 50 gf-cm (However, JIS P 81.
A flexible reinforcing base material made of paper, plastic film, plastic foam sheet, etc. is used, and it becomes easier to print with a word processor due to dirt.

Examples of ink-impermeable sheets include plastic sheets that are incompatible with ink, such as polyester, fluororesin, silicone resin, vinylidene chloride resin sheets, and paper;
Processed paper, metal foil, woven fabric, etc. are appropriately selected and used.

The present invention will be explained below with reference to the drawings.As seen in the cross-sectional views of Figs. The heat-sensitive stencil paper A is constructed by sequentially providing the prevention layers 4.

In this case, in claim 1, as shown in FIG.
, either the thermoplastic resin film layer 3 or the stick prevention layer 4 provided as necessary is colored. In this case, as means for coloring any of the layers, a coloring agent may be mixed into any of the layers, or a colored layer may be provided adjacent to at least one of the layers. . In the present invention, the means for coloring is not particularly limited, and therefore, "any one layer is colored" includes all configurations based on each of the above-mentioned means.

The figure shows a case where a coloring agent 5 is mixed into the thermoplastic resin film layer 3.

In addition, in claim 2, as shown in FIG. 2, other surfaces of the porous sheet 1 other than the exposed surface, an adhesive layer 2, a thermoplastic resin film layer 3, and an optional stick prevention layer are provided. This can be achieved by providing a metal film on one side of any one of the layers 4. The figure shows a case where a metal film 6 is provided on the surface of the thermoplastic resin film layer 3 on the adhesive layer side.

FIG. 3 is a diagram showing the structure of an original plate made using the base paper of the present invention, in which a frame B (of the reinforcing paper The ink-impermeable sheet C is overlapped and adhered to the frame B.

To specifically explain the steps of plate making and printing using the base paper of the present invention, first, the base paper (reinforced paper) is created using a word processor.
) and use this as a negative image. Thereafter, the printing area of the reinforcing paper is cut out to form a frame as shown in FIG. Next, ink is applied between the ink-impermeable sheet I and the porous sheet, and shadow printing is performed using a simple printing machine.

<Example> Examples will be described below.

Example 1 Liquid A for forming an adhesive layer [-2 parts by weight of polyester resin (Isenspiron Blank BH manufactured by Toyobo Co., Ltd.) were mixed to prepare a Δ liquid.

B liquid for stain prevention layer formation Toray Silicone 5H23K (curing agent)] was mixed to prepare B liquid.

Polyester film (
Using Embred 1.5 pm (manufactured by Unitika),
A coating amount of liquid A is applied to this material at a coating amount of 1.0 g/m, and a polyester fiber mesh sheet 1- (2 (10 mesh)) to form a porous sheet on the coated surface of the liquid A is applied to the coating surface. Next, liquid B was coated on the polyester film as a stick prevention layer at a coating amount of 0.05 g/rn and dried to prepare a base paper for heat-sensitive stencils.

After cutting this heat-sensitive stencil paper into a predetermined size, a flexible reinforcing base material (with a perforated cut hole) made of card paper having a thickness of 180 μm and a stiffness of 23 gf-cm is cut into the heat-sensitive stencil paper. The periphery of the porous sheet of stencil paper was laminated and reinforced.

Next, a 20 μm thick polyester film (ink-impermeable sheet) was superimposed on this reinforcing base +A, and at least its - and - sides were glued and sealed to obtain a heat-sensitive stencil original.

Printing was performed using a word processor using this thermal stencil original. Next, separate the flexible sleeve strength mirror from the cut (perforation) at the boundary with the printing area, expose the printed part of the porous sheet I, and use a simple printing machine (for example, manufactured by Riso Kagaku Kogyo Co., Ltd. Printing was carried out by attaching it to Pudding 1 to Gosoko). At this time, while the entire adhesive layer is colored blue-black, the adhesive layer in the printed area is heated and perforated together with the thermoplastic resin film, so the image can be confirmed as a negative image, and the multi-colored ink is printed in just the right amount. It has become possible to efficiently arrange the prints on the desired printing area. In addition, the results of printing using a simple printing machine were faithful to the original height, and 100 multicolor prints with no clear color streaks or color mixing could be printed.

1 2 Example 2 The blue-black dye was removed from the adhesive layer solution A of Example 1, and 400% dye was added to the surface between the thermoplastic resin film layer and the anti-stick layer.
A base paper for heat-sensitive stencil was prepared in exactly the same manner as in Example 1, except that an aluminum vapor-deposited layer of human thickness was provided.

Next, a heat-sensitive stencil blank was prepared in the same manner as in Example 1, and when printed using a simple printing machine, the perforations were visualized as negative images, and 100 clear prints with no color shift could be obtained.

Example 3 The aluminum vapor deposited layer provided between the thermoplastic resin film layer and the stick prevention layer in Example 2 was omitted, and an aluminum vapor deposited film with a thickness of 400 mm was provided on the surface of the porous sheet side of the adhesive layer. A heat-sensitive stencil paper was prepared in the same manner as in Example 2 except for the above.

Next, a heat-sensitive stencil blank was prepared in the same manner as in Example 1, and printed using a simple printing machine. The perforations were visualized as negative images, and 100 clear prints without color streaks could be obtained.

<Effects of the Invention> According to the present invention, it is possible to obtain a negative plate in which the perforated areas and the non-printed areas are clearly distinguished by the coloring agent of the layer constituting the heat-sensitive stencil paper or the metal film provided on the surface of the layer. As a result, when applying ink, you can apply ink to the appropriate position according to the image area without too much or too little, and when performing multicolor printing with a negative plate, it is especially easy to adjust the color scheme. It is possible to obtain clear printed matter without color shift.

[Brief explanation of drawings]

FIGS. 1 and 2 are sectional views showing an example of a heat-sensitive stencil paper according to the present invention, and FIG. 3 is a perspective view showing an example of a heat-sensitive stencil using the same. 1... Porous sheet 2... Adhesive layer 3... Thermoplastic resin film layer 4... Stick prevention layer 5... Colorant 6... Metal film 1:3 4 A... Heat sensitive Stencil paper B...Frame C...Ink impervious sheet 1-

Claims (1)

[Claims] 1) At least an adhesive layer on one side of the porous sheet,
Heat-sensitive stencil paper 2) in which at least one of the layers constituting the base paper other than the porous sheet is colored in a heat-sensitive stencil paper having thermoplastic resin film layers successively provided. At least an adhesive layer on one side of the porous sheet;
A heat-sensitive stencil paper having thermoplastic resin film layers successively provided thereon, characterized in that a metal film is provided on one side (excluding the exposed surface of the porous sheet) of at least one of the layers constituting the base paper. Base paper for thermal stencil printing