Photocopying – Contact printing – Light boxes
Patent
1988-06-28
1990-06-05
Pendegrass, Joan H.
Photocopying
Contact printing
Light boxes
355235, 355 66, G03G 1504, G03G 2750
Patent
active
049318365
ABSTRACT:
The present invention relates to various improvements in a scanning optical device having a pair of supporting members spaced from each other in a width-wise direction and an optical element assembly mounted reciprocably on the pair of supporting means. According to one aspect of the invention, the optical element assembly includes a supporting frame having optical elements mounted on it and support portions to be supported by the pair of supporting members, and at least one of the support portions is mounted on the supporting frame such that its position can be freely adjusted. According to another aspect of the invention, the optical element assembly is reciprocated by a front and a rear power transmission mechanism, and the front and rear power transmission mechanisms and a common driving source are disposed between a front and a rear upstanding base plate in which the pair of supporting members are provided. According to still another aspect of the invention, the front and rear power transmission mechanisms each include an input wire drum drivingly connected to the common driving source, and a wire for moving the optical element assembly is wrapped around the input wire drum through a plurality of turns. According to a further aspect of the invention, a notch for facilitating provisional wire anchorage is provided, and at the time of wire wrapping, the wire is provisionally anchored at the notch.
REFERENCES:
patent: 4401384 (1983-08-01), Abe
patent: 4862218 (1989-08-01), Tsunoda et al.
Matsushita Tetsuya
Nakakuma Akira
Mita Industrial Co. Ltd.
Pendegrass Joan H.
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