Control Of Loop Formed Before 2Nd Transfer - Konica Minolta magicolor 5550 Service Manual

Theory of operation Ver. 1.0 Nov. 2006
B. Registration roller clutch control
• In synchronization with the leading edge of the image [the sub scan print start signal (/
TOD) of the controller] after the leading edge of the media has reached the registration
roller and a loop has been formed in the media, the registration roller clutch is energized
to start turning the registration roller.
• After the lapse of a predetermined period of time after the registration sensor has been
deactivated by the media, the registration roller clutch is de-energized to stop the regis-
tration roller.
Registration sensor (PS4)
Registration roller clutch (CL2)
Sub scan print start signal (/TOD)
19.3.4

Control of loop formed before 2nd transfer

• A loop is formed in the media by the difference between the 2nd transfer roller media
conveyance speed (1.000) and the registration roller media conveyance speed (1.006).
• The loop formed in the media absorbs effect from the registration roller side, thus pre-
venting it from being transferred to the 2nd transfer section.
19. Conveyance section (Registration roller)
2nd transfer roller
Registration roller
4138to2101c0
Media
A011T2E069DA
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