JPS5957241A - Composite contact automatic type screen (raster) - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a sliding autotype printing screen (:) star), including black and white and color 11! II Printing points or individual elements that scan the image (picture)
) F) Regarding M construction.

Composite contact automatic tie screen (raster)
(combined contact autotype
e 5clean-raster) is used in the printing industry for offset printing and 111! ! An image (picture) is created by combining individual strokes.
Vertical print
g) It is used to obtain reproductions in letterpress printing. The known types of autotype rasters in practice operate with elliptical, circular strokes, zigzag, and mostly rectangular strokes. Special autotype rasters with different patterns and structures were also used to imitate reeds and textiles. Autotype rasters can be positive and negative, depending on the number of points per meter, 25, 40,
48°54.60,70,80. It is classified as a raster that is waiting for more warehouses. Similarly, recently, 4! Twin autotype rasters with adjacent points of different sizes were created to improve the transfer of the maximum amount of information from the W original. Rectangular pictures arranged in the shape of a chess board #i! Classic type autotype 2 with wo
Star is used raw. In this type of autoquiz raster, the lines are the densest in the center.
), and the density decreases toward the surrounding boundaries.

In the application of the autotype raster described above, the shape of the drawing line can be seen on the drawing. If details are to be better distinguished, an autotype raster with a density of greater than 54 points per ω should be used;
In addition to requiring high-quality printing paper with a smooth surface,
There are 2 and 9 drawbacks of clogging. If an autotype printer with 0 points or more per crn is used, the contrast will decrease and printing will become complicated.

It is an object of the present invention to provide a composite contact autotie graster which substantially eliminates all of the above-mentioned drawbacks. And the present invention converts 5% sharp (5harp) circular points into non-sharp latent images (notsharp 1).
The method consists in forming a rectangular type screen on the foil by photolithography to expose the brightest position of the attendee picture.

Referring to the accompanying drawings, the shape of the points of a rectangular autotie raster is shown for comparison in ThA and in a composite autotie raster tH according to the invention. C indicates the boundary between light and dark surfaces. If you apply Autotype 2 Star DLR to this, it will be 1! J product Ea-obtained. F shows the entire boundary between the aged light and dark surfaces, and when this is scanned with a composite autotype 2 star Gt-, a reproduction H is obtained.

Composite contact autotype printing screen (:) star) gives better representation of line sharpness (5harpness), the interface of the reproduced image is more perfect, has higher peripheral sharpness and more beautiful design. .

It increases contrast and quality even when printing on inferior quality materials in color 2 and black and white printing. Higher order colors can be applied during the printing process. Composite contact autotigescreens (raster) can be commonly applied to offset and letterpress reproduction techniques. This is particularly advantageous for electronic scanning devices. The printing point has a considerable influence on the gigantographic method for advertisements, posters, etc. *
(effective. The quality of the images (pictures) in newspapers and periodicals is substantially improved by the application of the 11-contact autotype raster.

[Brief explanation of drawings]

FIG. 1 is a diagram illustrating the application of conventional and inventive autotyler screens. A, B...point shape, C, F...original IJ, D, G...auto type raster, E, H...sampled product. Patent applicant Craf Opal, Narodny Bodnik Patent agent Patent attorney Tomo Ikuki Patent attorney Kazuyuki Nishidate Patent attorney Tetsuji Koga Patent attorney Akira Yamaguchi Engraving of drawing (Dream 1 with no change in content Ju-G Procedural amendment (method) % formula % 1. Indication of the incident 1982 Patent Application No. 21748 2. Name of the invention Composite contact autotype screen (raster) 3
, Relationship with the case of the person making the amendment Name of patent applicant Graf Opal, Narodni Podninok 4, Agent 5 Date of amendment order May 31, 1981 (Date of dispatch) 6. Drawings subject to amendment 7. Drawings of contents of amendment engraving (no changes in content) 8. Engraving drawing of attached documents 1 copy

Claims (1)

[Claims] 1.5% sharp circular point gold non-sharp urafushi image (n
ot 5harp 1tent picture)
to be exposed to the brightest position of
sed) A composite contact automatic tie screen formed into a rectangular type mesh metal foil using a photo printing method.