Multi-beam image forming apparatus configured to perform...

Details Multi-beam image forming apparatus configured to perform... Multi-beam image forming apparatus configured to perform...

2009-02-12

2010-11-23

Pham, Hai C (Department: 2861)

Incremental printing of symbolic information

Light or beam marking apparatus or processes

Scan of light

C347S246000

Reexamination Certificate

active

07839427

ABSTRACT:
A multi-beam image forming apparatus is disclosed in which a semiconductor laser array including plural semiconductor laser elements serves as an optical beam generation unit. The apparatus includes a printing ratio counting unit that counts printing ratios of the semiconductor laser elements in plural printing areas divided in a scanning direction based on image data transmitted from a host unit; and a light amount control unit that controls emission light amounts of the semiconductor laser elements based on a result from the printing ratio counting unit. The light amount control unit calculates droop correction values corresponding to the printing areas from the printing ratios of the semiconductor laser elements based on the printing ratios in the printing areas counted by the printing ratio counting unit so as to correct the light amounts of the semiconductor laser elements.

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