Incremental printing of symbolic information – Light or beam marking apparatus or processes – Scan of light
Patent
1998-12-23
2000-09-19
Le, N.
Incremental printing of symbolic information
Light or beam marking apparatus or processes
Scan of light
347247, B41J 247
Patent
active
061219940
ABSTRACT:
A light emitting apparatus including a photosensitive member and an exposure device including a light emitting device array made up of a plurality of light emitting devices arranged in a direction of main scan across a moving direction of the photosensitive member and a switching device array made up of a plurality of switching devices arranged and connected to the light emitting devices in one-to-one relation. The switching device array is divided into a plurality of groups, a first group of leads connected in common to first terminals of the switching devices for each of the plural groups of switching devices, a second group of leads connected to second terminals of each of the switching devices, and a third group of leads, each of the third group of leads connected to third terminals of each switching device in a respective group of switching devices. The apparatus further includes a drive device for operating the simultaneous light emitting circuits to apply a first scan signal to the first group of leads, a voltage signal with one polarity to the third group of leads in synch with the first scan signal, and a discharge signal to the second group of leads, thereby causing capacitors to be discharged.
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Koumura Noboru
Kuribayashi Masaki
Mashimo Seiji
Nagase Yukio
Narita Izumi
Canon Kabushiki Kaisha
Le N.
Nguyen Lamson D.
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