Toshiba DP1600 Service Manual page 109

6.5 Printer
Image signals processed on the Main board are processed on the print-control ASIC and the laser drive
board on the same Main board. Then, they are laser-controlled for the write operation.
(1) Setting of effective image area ................ • The top, bottom, left and right margins are set.
(2) Synchronization Clock Generation .......... • HSYNC and the reference clock signal at printer block
block of horizontal synchronizing
signal (HSYNC)
(3) Laser drive block .................................... • ON/OFF control of the semiconductor laser and APC (Auto
1600/2000/2500 IMAGE PROCESSING
synchronized with the signal.
Power Control) control.
6 - 8 December 2000 © TOSHIBA TEC