Surface deviation compensation for a beam scanning system

Details Surface deviation compensation for a beam scanning system Surface deviation compensation for a beam scanning system

1984-01-23

1986-04-29

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

358293, H01J 314

Patent

active

045859388

ABSTRACT:
The image formed by a laser flying spot scanner on a photosensitive medium is subject to error in size and/or position because of deviation of the photosensitive surface from a nominal position. The deviation will occur if the substrate carrying the photosensitive surface does not have a uniform thickness. In a scanning system having a code mask that produces reference signals for controlling timing of writing beam modulation, compensation for the error is provided by maintaining a fixed distance between the code mask and the surface of the medium. The code mask floats freely upon the medium surface to move up and down with height variations of the surface as the medium passes under the code member and under the writing beam. Alternatively, the platen that supports the photosensitive medium is allowed to float and is continuously urged upwardly against spacing or position sensing devices to maintain the medium surface at a fixed distance from the mask.

REFERENCES:
patent: 4447723 (1984-05-01), Neumann
patent: 4523093 (1985-06-01), Neumann

Affiliated with

Also associated with

Rating

Surface deviation compensation for a beam scanning system does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Surface deviation compensation for a beam scanning system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Surface deviation compensation for a beam scanning system will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-142718