Printing screen and method of making same

Details Printing screen and method of making same Printing screen and method of making same

1981-08-11

1983-07-19

Kittle, John E.

Radiation imagery chemistry: process, composition, or product th

Radiation modifying product or process of making

Screen other than for cathode-ray tube

350322, 430 7, 430321, 430394, 430396, 430952, 430307, 430310, G03F 500, G03C 500

Patent

active

043944248

ABSTRACT:
A printing plate is made in accordance with a particular method and is used in a printing process wherein it is effective to produce a substantially continuous tone printing effect. A negative screen having an overall pattern defined by rows of closely spaced substantially square-shaped areas is exposed two times on an image carrier. An image screen pattern is developed on the image carrier wherein each of the two exposures of the overall pattern on the negative screen is effected at an angle of 30.degree. with respect to each other. A unique printing screen pattern is obtained which is then used for printing a reproduced image.

REFERENCES:
patent: 2206054 (1940-07-01), Sease
patent: 2798428 (1957-07-01), Tollenaar
patent: 3581660 (1971-06-01), Rapoport et al.
patent: 3664843 (1972-05-01), Fontijn
patent: 3737321 (1973-06-01), Torr et al.
patent: 3912510 (1975-10-01), Marks
patent: 4188225 (1980-02-01), Liu
patent: 4283471 (1981-08-01), Sportelli

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