Light scanning device

Details Light scanning device Light scanning device

2005-09-13

2009-06-23

Tran, Huan H (Department: 2861)

Incremental printing of symbolic information

Light or beam marking apparatus or processes

Scan of light

Reexamination Certificate

active

07551195

ABSTRACT:
A light scanning device capable of scanning a light beam on a photosensitive surface includes a light receiving system configured to receive the light beam and output a light receiving signal and a synchronizing signal generating system configured to generate a synchronizing signal with which light scanning is synchronized. The synchronizing signal generating system includes a first bias superimposing system configured to superimpose a first bias signal onto the light receiving signals to generate a first light receiving signal, a second bias superimposing system configured to superimpose a second bias signal with a different level from that of the first bias signal onto the light receiving signals to generate a second light receiving signal, a waveform shaping system configured to shape the waveform of the second light receiving signal, and a comparing system configured to compare the first light receiving signal with the second light receiving signal to output the synchronizing signal.

REFERENCES:
patent: 6259466 (2001-07-01), Oomura et al.
patent: 6844892 (2005-01-01), Lima et al.
patent: 6937376 (2005-08-01), Takakubo
patent: 11-160636 (1999-06-01), None
English Language Abstract of JP 11-160636.
U.S. Appl. No. 11/217,481 to Kasai, filed Sep. 2, 2005.
U.S. Appl. No. 11/211,639 to Kasai, filed Aug. 26, 2005.

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