Photocopying – Projection printing and copying cameras – Focus or magnification control
Patent
1985-01-14
1986-01-14
Wintercorn, Richard A.
Photocopying
Projection printing and copying cameras
Focus or magnification control
355 8, G03B 2734, G03B 2740, G03B 2770
Patent
active
045642885
ABSTRACT:
An electrostatic recording apparatus such as an electrophotographic copying machine includes a mobile light source being able to move reciprocatively and exposing an original copy at its forward going motion. Reflected light from the original copy exposed by the light source produces an image on a photosensitive drum through an image-forming lens, and an electrostatic latent image is formed on the photosensitive drum. This electrostatic latent image is developed with a toner to form a visible image, and the toner image is transferred onto a paper fed from a paper feeding part. Papers of different sizes can be fed from the paper feeding part, and in response to this paper size, data such as moving speed and moving distance of the light source are read from the ROM, being given to a motor controller. As a function of the paper size, different returning speed data are set in advance, and accordingly, the light source can return at a speed responding to the paper size. Furthermore, since the light source forms an image of different magnification from that of the original copy, it is moved at a different speed. When a different magnification is set, a moving speed data of the light source responding to its magnification is read from the ROM. Accordingly, the moving speed of the light source can be varied also in response to the magnification.
REFERENCES:
patent: 4336995 (1982-06-01), Durbin et al.
patent: 4362382 (1982-12-01), Simpson
patent: 4377337 (1983-03-01), Beck
patent: 4436416 (1984-03-01), Negoro et al.
Izawa Takahal
Kikkawa Shinichi
Miyazaki Yoshifumi
Moriki Etsuzo
Nonoue Torahiko
Sanyo Electric Co,. Ltd.
Wintercorn Richard A.
LandOfFree
Electrostatic recording apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Electrostatic recording apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Electrostatic recording apparatus will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-428451