Optical scanning apparatus and an image forming apparatus

Incremental printing of symbolic information – Light or beam marking apparatus or processes – Scan of light

Reexamination Certificate

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C347S263000

Reexamination Certificate

active

06891559

ABSTRACT:
An optical scanning apparatus including a laser diode light source fittingly inserted into a holding member. The holding member is formed of a resin material having a thermal conductivity of 0.7 w/m°K or more and filled with either glass fiber or metal oxide or both, or aluminum. A heat radiating fin projecting radially is formed on an outer circumferential portion of the cylindrical body of the holding member. With this structure, temperature rise due to heat emission from the laser diode can be suppressed and deterioration of the laser diode can be prevented. This structure simply and inexpensively provides stable optical properties to optical scanning and image forming devices.

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