Recorders – Printing – dotting – or punching marker – Ink transfer support or moving means
Patent
1989-03-20
1990-08-21
Reinhart, Mark J.
Recorders
Printing, dotting, or punching marker
Ink transfer support or moving means
358296, G01D 1514
Patent
active
049510657
ABSTRACT:
In a period varying beam recorder comprising a light source for emitting a light beam carrying picture information and an optical deflector for deflecting the light beam in a plane, wherein the light beam is directed to a photosensitive material or member to conduct primary scanning, and the light beam is deflected in the plane at least over an effective scanning width necessary for the primary scanning of the photosensitive material or member, photodetectors are disposed outside opposite ends of the effective scanning width for detecting the light beam for determining a scanning time over the effective scanning width, and an image processing circuit is provided for controlledly producing a picture element sync signal and for carrying picture information on the light beam in accordance with the sync signal, whereby the picture element sync signal has a variable period and the period of the picture element sync signal is controlled on the basis of the scanning time such that the exposure timing of each picture element is optimized.
REFERENCES:
patent: 4586057 (1986-04-01), Schoon
patent: 4587531 (1986-05-01), Dangler
patent: 4620200 (1986-10-01), Fukai
patent: 4698692 (1987-10-01), Fry et al.
Fuji Photo Film Co. , Ltd.
Reinhart Mark J.
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