Apparatus for and method of screen printing on boards
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
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Jun 26, 1990
Grant Date -
N/A
app pub date -
Nov 17, 1988
filing date -
Nov 19, 1987
priority date (Note) -
Expired
status (Latency Note)
Importance
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.
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