e-STUDIO281c/351c/451c © 2005 - 2008 TOSHIBA TEC CORPORATION All rights reserved
LASER OPTICAL UNIT
8 - 10
8.6 Laser Driving PC Board (LDR)
Image signals processed on the LGC board are processed by ASIC for writing control and LDR board.
The signal is then laser controlled and written on the drum.
1) Setting of effective image area
- Top, bottom, left and right margins
2) Horizontal synchronization signal (HSYNC) clock generation section
- Reference clock signal in the printer section synchronized with HSYNC and its signal.
3) Laser drive section
- ON/OFF control of the semiconductive laser and APC (Auto Power Control).
APC : Adjusts disparity of the laser intensity caused by temperature
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