Chapter 77-73F-7-913. Full-color one-sheet printPVREQ signal (image demanding signal) for each color is produces based on A-surface ITB home position detection signal (I_TOP1A). The image is formed basedon this PVREQ signal.F-7-924. Full-Color 2-Sheet Continuous Printing (2-image printing) (See after-mentioned note)PVREQ signal (image demanding signal) for each color is produced based on the A-surface ITB home position detection signal (I_TOP1A) and the B-surface ITBhome position detection signal (I_TOP1B). The image is formed at constant speed based on this PVREQ signal.The image is formed in order based on I_TOP1A for the first surface, I_TOP1B for the second surface.F-7-932-image printing is the print with image forming by 2 surfaces on the ITB. 2-image printing is available for up to LTR size (sub scanning direction) that is equivalentto the interval between two home position detection signals.5. Monocolor Continuous PrintingThe image forming position on the ITB is arbitrary because the monocolor printing has single color. The DC controller does not perform the ITB home positiondetection at monocolor printing.After determining the home position by the timer inside the DC controller, PVREQ signal (image demanding signal) is produced. The image is formed based onthis PVREQ signal.F-7-94Related Error CodeE070 (ITB HP detection fault error)xx=01: ITB home position sensor B, xx=02: ITB home position sensor A, only at ITB 1/1 speed, XX=00: No discrimination00xx: When ITB HP is not detected after the specified period of time passed, there is an error of ITB home position detection sensorStart key ONONPRINTINTRPVREQLaser(image formation)A-surfaceB-surfaceL L Y Y M M C CI_TOP1AI_TOP1BI_TOP2AI_TOP2BI_TOP3AI_TOP3BI_TOP4AI_TOP4BBk BkI_TOP5AI_TOP5BHome positiondetection signal(PS1 or PS2 output)Start key ONONPRINTINTRPVREQLaser(image formation)A-surfaceB-surfaceHome positiondetection signalY M C BkI_TOP1A I_TOP2A I_TOP3A I_TOP4A(PS1 or PS2 output)Start key ONONPRINTINTRPVREQLaser(image formation)A-surfaceB-surfaceY Y M M C C Bk BkI_TOP1AI_TOP1BI_TOP2AI_TOP2BI_TOP3AI_TOP3BI_TOP4AI_TOP4BHome positiondetection signal(PS1 or PS2 output)Start key ONONPRINTINTRPVREQLaser (image formation)Home position detectionsignalL or BkI_TOP1ADC controller inside timer
