Radiant energy – Photocells; circuits and apparatus – Optical or pre-photocell system
Patent
1989-08-07
1991-04-09
Nelms, David C.
Radiant energy
Photocells; circuits and apparatus
Optical or pre-photocell system
346108, H01J 314
Patent
active
050067052
ABSTRACT:
A scanning apparatus for use in a laser beam printer or the like comprising a control means for varying the spacing between adjoining scanning beams of a plurality of laser beams, which further comprises a plurality of light sources, a means for changing intensity, including on/off states, of the beam from the light sources, and a rotating polygonal mirror for allowing the beams to scan the scanned plane in parallel, and is adapted, in accordance with the value of the pixel density of information to be recorded, such that, in the beam scanning direction, the area exposed to the beam is changed by changing the width of a beam intensity modulating pulse, and in the direction perpendicular to the beam scanning, the number of revolutions of the rotating polygonal mirror is changed.
REFERENCES:
patent: 4644160 (1987-02-01), Arimoto et al.
patent: 4725855 (1988-02-01), Arimoto et al.
patent: 4760407 (1988-07-01), Arimoto et al.
patent: 4841137 (1989-06-01), Mochizuki
Arimoto Akira
Mochizuki Takeshi
Ohshima Minoru
Saito Susumu
Seino Minoru
Hitachi , Ltd.
Hitachi Koki Co,. Ltd.
Nelms David C.
LandOfFree
Light beam scanning apparatus with controller for varying spacin does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Light beam scanning apparatus with controller for varying spacin, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Light beam scanning apparatus with controller for varying spacin will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2036470