Laser beam isolation apparatus of a laser printer

Details Laser beam isolation apparatus of a laser printer Laser beam isolation apparatus of a laser printer

2006-02-21

2006-02-21

Tran, Huan (Department: 2861)

Incremental printing of symbolic information

Light or beam marking apparatus or processes

Scan of light

Reexamination Certificate

active

07002615

ABSTRACT:
A laser beam isolation apparatus of a laser printer includes a blocking portion formed on the laser scanning unit to be moved between a blocking position to block a passing hole of the laser scanning unit and an open position to open the passing hole, a guide portion mounted in the laser scanning unit relative to the blocking portion, guiding the blocking portion to move between the blocking position and the open position, and an operating portion formed on the developer unit. The operating portion is operated to move the blocking portion along the guide portion. During a removal of the developer unit, the blocking portion that blocks a laser beam of a laser diode from being emitted out of the laser scanning unit is moved to the blocking position by its own weight.

REFERENCES:
patent: 5157416 (1992-10-01), Kinoshita et al.
patent: 2001/0021295 (2001-09-01), Yoshida
patent: 2002/0024585 (2002-02-01), Kim et al.
patent: 3-2775 (1991-09-01), None
patent: 6-332083 (1994-02-01), None

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