Laser Driving Pc Board (Ldr Board) - Toshiba e-STUDIO453 Service Manual

7.5 Laser Driving PC Board (LDR board)

Image signals processed on the LGC board are then processed by ASIC for writing control and Laser
driving PC 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 (H-Sync) . ....... • Reference clock signal in the printer section
clock generation section
(3) Laser drive section ............................................. • ON/OFF control of the semiconductive laser
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e-STUDIO350/352/353/450/452/453
IMAGE PROCESSING
synchronized with H-Sync and its signal.
and APC (Auto Power Control).
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