Thermal compensation of bi-directional alignment in a...

Details Thermal compensation of bi-directional alignment in a... Thermal compensation of bi-directional alignment in a...

2006-08-29

2010-10-19

Luu, Matthew (Department: 2861)

Incremental printing of symbolic information

Light or beam marking apparatus or processes

Scan of light

C347S235000, C347S250000, C359S197100, C359S204100, C359S212100, C359S213100, C359S214100, C359S223100

Reexamination Certificate

active

07817178

ABSTRACT:
Methods and apparatus include improving print quality of a bi-directionally scanning electrophotographic (EP) device, such as a laser printer or copy machine, according to temperature. A moving galvanometer or oscillator reflects a laser beam to create forward and reverse scan lines of a latent image. During use, the actual ambient temperature is obtained and used make corrections to improve print quality, such as by producing the latent image with a signal altered from an image data input signal to help ensure proper alignment of the forward and reverse scan lines.

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