Electrical f.multidot..theta. correction system in a laser print

Details Electrical f.multidot..theta. correction system in a laser print Electrical f.multidot..theta. correction system in a laser print

1987-12-30

1989-05-23

Goldberg, E. A.

Recorders

Printing, dotting, or punching marker

Ink transfer support or moving means

350 68, 250332, 250347, G01D 942, G02B 2608, H01L 2500

Patent

active

048334898

ABSTRACT:
In optical scanning system of laser printer, laser lights are scanned at uniform speed on a photosensitive plane through the projection lens which brings focuses on the photosensitive element. The f.multidot..theta. correction technique is required so that the light reflected from the rotating mirror at the angle .theta. formed between the light ray and the light axis may be made incident at a position c constant times as large as the angle .theta. onto the photosensitive drum. The f.multidot..theta. correction is, without constituting and using the known optical system by a plurality of lenses, electrically performed by attaching to the rotating polygon mirror a chopper grooved at intervals, corresponding to the uniform speed correction to generate the pulse signal, thereby obtaining the optimum width of picture line.

REFERENCES:
patent: 4257053 (1981-03-01), Gilbreath
patent: 4306242 (1981-12-01), Jeffery
patent: 4613877 (1986-09-01), Spencer
patent: 4755030 (1988-07-01), Araki

Affiliated with

Also associated with

Rating

Electrical f.multidot..theta. correction system in a laser print does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Electrical f.multidot..theta. correction system in a laser print, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Electrical f.multidot..theta. correction system in a laser print will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1733488