Photocopying – Including fiber optics
Patent
1983-12-12
1985-12-31
Braun, Fred L.
Photocopying
Including fiber optics
355 55, G03G 1504, G03B 2734
Patent
active
045617589
ABSTRACT:
A copying machine includes: a rotatable photoconductive drum and an optical assembly, having optical elements, for optically scanning a paper document, and forming an optical image corresponding to an optical document image on a photoconductive drum surface. The optical assembly includes: a lens; a first mirror section for introducing the image to the lens; and a second mirror section for introducing an optical image from the lens onto the drum. The position of the first mirror section relative to that of the second mirror section varies under mass production conditions although the relative positional relationship is preset in accordance with the inherent focal length of the lens. A focus adjusting device having DIP switches which are manually operated by an operator slightly moves the lens, the first mirror section and/or the second mirror section so as to eliminate positional errors in the optical assembly in accordance with the electrical data generated by the DIP switches, thereby compensating the out-of-focus state of the optical image on the drum surface.
REFERENCES:
patent: 3946222 (1976-03-01), Swanberg
patent: 4268165 (1981-05-01), Bradmon
patent: 4332461 (1982-06-01), Cail et al.
Nawata Yoshiaki
Oushiden Hideshi
Braun Fred L.
Tokyo Shibaura Denki Kabushiki Kaisha
LandOfFree
Copying apparatus with focus-adjusting mechanism does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Copying apparatus with focus-adjusting mechanism, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Copying apparatus with focus-adjusting mechanism will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1021884