Coating processes – Electrical product produced – Integrated circuit – printed circuit – or circuit board
Patent
1988-11-17
1990-06-26
Lawrence, Evan
Coating processes
Electrical product produced
Integrated circuit, printed circuit, or circuit board
101123, 101129, 118406, 427210, 427282, B05D 512, B05D 132, B05C 320
Patent
active
049370979
ABSTRACT:
A screen printing apparatus and method for forming printed wiring on a board. The apparatus comprises a holder for holding the board upright in posiiton, and a printing device arranged vertically for at least one surface of the board as held in position by the holder, the printing device including a spatula-like squeegee, a screen, a first scraper in the form of a spatula for scraping ink from the front surface of the screen remote from the board and a second scraper in the form of a spatula for scraping ink from the rear surface of the screen adjacent the board, the first scraper and the second scraper being mechanically drivable at the same time to scrape the screen with the first scraper positioned below or above or at the same level as the second scraper, the squeegee being mechanically drivable for squeegeeing ink on the front surface of the screen after the first and second scrapers scrape the screen.
REFERENCES:
patent: 4275655 (1981-06-01), Artaud et al.
patent: 4509455 (1985-04-01), Shirataki
patent: 4599248 (1986-07-01), Shirataki
Lapedes, D. N. (ed.), "McGraw-Hill Dictionary of Scientific and Technical Terms," New York, McGraw-Hill Book Company, 1976, p. 1341.
Ichinose Shiro
Katsuuma Kunio
Ohta Hideo
Segawa Kazuo
Lawrence Evan
Satosen Co., Ltd.
Toshin Kogyo Co. Ltd.
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