Laser printer capable of changing a pixel density

Details Laser printer capable of changing a pixel density Laser printer capable of changing a pixel density

1988-03-28

1989-10-03

Goldberg, E. A.

Recorders

Printing, dotting, or punching marker

Ink transfer support or moving means

358298, 358456, G01D 942, H04H 140, H04H 121

Patent

active

048720259

ABSTRACT:
When a data control portion receives a request for change of a pixel density, a cycle used as a reference cycle for detecting abnormality in a laser beam is changed corresponding to the pixel density. While a rotating speed of a polygon mirror for changing the density of picture element is not constant, emission of the laser beam is forbidden and detection as to abnormality in the laser beam is not effected. A mark for detection of an image density is formed on a photoreceptor where the laser beam is scanned, and outside an area where the image is to be formed. The formation of the detection mark is forbidden while the pixel density is being changed. On the other hand, when the detection mark is being formed, output of an instruction for changing the pixel density is deferred. In addition, emission of the laser beam is forbidden while the pixel density is being changed.

REFERENCES:
patent: 4239372 (1980-12-01), Iwai
patent: 4272182 (1981-06-01), Abe et al.
patent: 4416535 (1983-11-01), Totori
patent: 4734715 (1988-03-01), Shiraishi

Affiliated with

Also associated with

Rating

Laser printer capable of changing a pixel density does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Laser printer capable of changing a pixel density, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Laser printer capable of changing a pixel density will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-667117