JPH07268797A - Printed matter increased in printability and writability and its production - Google Patents

Abstract

PURPOSE:To obtain a printed matter that can prevent the characters written or the seals put on the base surface of the printed matter or on the printed surface from being made illegible or rubbed out due to press contact or rubbing with hands or the like. CONSTITUTION:The base material having hydrophobic surfaces such as coated paper 2 or synthetic resin sheet is printed on its surface and the printed surface is irradiated with laser beams on the prescribed areas 7 to scrape off a depth from a few microns to several tens microns to form the modified surface area 8 whereby the sealing area 9 or writing area 9' is provided. Shaving with laser beams increases the surface area of the base surface and the stamp ink or water-born ink rapidly penetrates into the surface layer to promote penetration and drying of these inks whereby the setting properties of the written characters or the seal marks are improved.

Description

Detailed Description of the Invention

[0001]

The present invention relates to art paper, coated paper,
Alternatively, it relates to a printed material such as a synthetic resin sheet on which the surface of the substrate is printed by gravure, flexo, screen, process, etc., more specifically, a non-water-absorbing substrate surface of the printed material or a substrate at a predetermined position on the printed surface. The present invention relates to a printed matter in which a stamped portion or a writing portion is formed with a surface-modified portion obtained by scraping off the surface layer portion by laser irradiation, and the sealability of a stamp, an imprint with a water-based ink, or the setability of writing characters is improved.

[0002]

2. Description of the Related Art Conventionally, art paper, coated paper,
Or a surface layer portion of a non-water-absorbent substrate surface or a printing surface such as a synthetic resin sheet, a marking portion or a writing portion formed by scraping off by laser irradiation is formed, a marking, or an imprint formed by writing, Alternatively, no technique has been disclosed that improves the setability of the written characters.

[0003]

For art paper and coated paper, a base paper similar to fine paper is coated with a pigment such as kaolin or barium sulfate mixed with an adhesive such as casein or starch, and dried. After that, it is glossed with a super calendar, has excellent smoothness of the paper surface, high whiteness,
Since the ink surface having excellent glossiness can be obtained, the demand for these art papers and coated papers has been rapidly increasing with the recent advancement of commercial printing and the improvement of printing machine performance. However, since such art paper and coated paper generally have a dense surface in which the fibers of the paper are closed, the gravure,
Printing with solvent-volatile ink such as flexo, screen, process, etc. does not cause any problems in ink setting properties, but if these paper surfaces are stamped with a seal, stamped with water-based ink, or written, the water-based solvent will not Since it has low volatility and does not penetrate into paper quickly, imprint,
Alternatively, the setability of the written characters deteriorates, and it takes a considerable amount of time to receive them on the paper surface.If the hand or other part touches and rubs the imprint or the written characters within a short time after imprinting or writing, the imprint will be imprinted. Or, the written characters may become unreadable or disappear.

Further, in recent years, printed materials made of a base material other than paper, such as synthetic resin sheets, have been rapidly increasing in number due to the diversification of functions of forms and the spread of plastic cards. However, since the ink does not penetrate into the base material at all, when it is stamped with a stamp, a water-based ink is used for marking or writing, the settability is further deteriorated.

Therefore, according to the present invention, in a printed material having an art paper, a coated paper, a synthetic resin sheet or the like as a base material, when the base material surface or the printing surface is imprinted or written, a red ink or a water-based ink of a seal is used. It is an object of the present invention to provide a printed matter in which an imprint formed with a mark or a written character does not become unreadable or disappear even when it is rubbed against a hand or other part.

[0006]

In order to achieve the above object, the present invention provides a printed matter obtained by printing on a non-water-absorbent substrate surface such as art paper, coated paper, or synthetic resin sheet. The non-water-absorbent substrate surface or the substrate surface layer portion at a predetermined portion of the printed surface is scraped off by laser irradiation to provide a printed matter in which a marking portion or a writing portion is formed.

The laser beam device of the present invention mainly uses a laser generating device for an inert gas such as helium, nitrogen or argon, and more preferably a carbon dioxide gas laser beam generating device. In addition, the configuration of the device is such that the laser generator is a cylinder filled with a gas such as carbon dioxide gas, a gas circulation device for introducing the gas filled in the cylinder into the laser resonator body, and an electrode in the laser resonator body. It is composed of a high-voltage power supply for applying a high voltage to the. Then, the short pulsed light obtained from the laser beam extracted by this laser generator passes through a plurality of external optical system reflecting mirrors, a beam compressor and a condenser lens, and is directed to the substrate surface or the printed surface of the printed matter located at the processing head. Guided, the surface layer of the substrate, the depth number ~
The surface-modified portion is formed by shaving in the range of several tens of microns.

The marking portion or the writing portion in the present invention may be formed on the printed surface of the base material even if it is already printed, or on the non-printed base material surface. However, it is not particularly limited.

[0009]

[Function] By increasing the surface area of the base material surface layer portion of the irradiated portion by scraping off the base material surface of the printed matter or the base material surface layer of the printed surface by laser irradiation, a seal imprint is formed when imprinted or written. Since the red ink of the stamp or the water-based ink quickly penetrates into the surface layer of the base material to accelerate permeation drying, the imprintability or the settability of the written characters can be improved.

[0010]

The present invention will be described in more detail below with reference to the preferred embodiments. 1 and 2 show a product catalog 1 which is an embodiment of the present invention. The product catalog 1 of this embodiment is
It consists of the base material 3 of the coated paper 2, the base material 3 is provided with a perforation line 4, and the product catalog section 5 and the application form section 6 are formed in a divided manner. Then, the substrate surface 7 is printed with a title, design, background, description, etc. 8, and carbon dioxide, carbon monoxide are provided at predetermined locations on the substrate surface 7 of the application section 6. A surface obtained by irradiating a laser beam having a wavelength of 10.6 μm from a laser irradiation device (Zymark 7000 / EDM) using a mixed gas of helium, helium and nitrogen, and shaving the surface layer of the base material within a depth of 5 to 10 microns. The stamped portion 9 and the writing portion 9'consisting of the reforming portion 8 are formed.

Although the above embodiment is a case of a product catalog, a synthetic resin sheet may be used instead of the coated paper 2 to form a plastic card such as a membership card,
In this case, a writing process in which a surface modified portion is formed in the signature field may be performed.

[0012]

INDUSTRIAL APPLICABILITY In the present invention, a laser is applied to a non-water-absorbent substrate surface of a printed matter made of art paper, coated paper, a synthetic resin sheet or the like or a predetermined portion of the printed surface to irradiate the substrate. A marking part or a writing part can be formed by scraping off the surface layer part of, and the marking part or the writing part is marked,
Alternatively, when written, the seal imprint, or the vermilion of the seal that constitutes the written character, or the water-based ink quickly penetrates into the base material, and permeation drying is promoted, so the imprintability or the settability of the written character is improved. Even if the imprint or the written character is touched and rubbed by the hand or other parts, it is not illegible or lost.

[Brief description of drawings]

FIG. 1 is a plan view of a surface of a product catalog according to an embodiment of the present invention.

FIG. 2 is a cross-sectional view taken along the line AA of FIG.

[Explanation of symbols]

 1 ... Product Catalog 2 ... Coated Paper 3 ... Substrate 4 ... Cut Line 5 ... Product Catalog 6 ... Application Form 7 ... Substrate Surface 8 ... Surface Modification 9 ... Marking 9 '... Writing

Claims (2)

[Claims] 1. A printed matter obtained by printing on a non-water-absorbent substrate surface such as art paper, coated paper, or a synthetic resin sheet, wherein the non-water-absorbent substrate surface or a substrate at a predetermined position on the printed surface. A printed material having a surface-modified portion formed by scraping off a material surface layer portion. 2. A base material surface of a printed material formed by printing on a non-water-absorbent base material surface such as art paper, coated paper, or a synthetic resin sheet, or a base material surface layer portion at a predetermined portion of the printed surface is scraped off by laser irradiation. A method for producing a printed matter, comprising the step of forming a surface-modified portion by using