Apparatus for adjusting the minimum print heat to platen spacing

Typewriting machines – Including adjustment for optimum printing plane

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400 59, 4003543, B41J 1120

Patent

active

049061151

ABSTRACT:
A printer includes a platen (3), a print head (7) and a front carriage guide shaft (4) for supporting the print head and adjustable for selectively varying the print head-to-platen spacing. The guide shaft is mounted to the printer frame by an eccentric (11) and a setting lever (12) secured to the eccentric is selectively movable for adjusting the print head-to-platen spacing. A detent plate (13) is mounted to the printer frame (1, 2) and carries stops (14, 15) for limiting movement of the setting lever and, therefore, the print head-to-platen spacing adjustment. Releaseably engageable lock elements (16) on the detent plate and frame provide relative adjustability and retention of the position of the detent plate on the frame for setting the position of the front limit stop (15) and, thereby, the minimum permitted print head-to-platen spacing obtainable through movement of the setting lever.

REFERENCES:
patent: 4286888 (1981-09-01), Bennett et al.
patent: 4720200 (1988-01-01), Gomoll et al.
patent: 4784503 (1988-11-01), Bettini
"Snap Fastener for Blind Installations"; IBM Technical Disclosure Bulletin; vol. 30, No. 2, pp. 519-520; Jul. 1987.

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