Conveyance Speed Control; Operation; Registration Roller Control - Konica Minolta magicolor 4690MF Service Manual

Theory of operation Ver. 1.0 May 2008

20.3 Operation

20.3.1

Conveyance speed control

• The Transport motor provides drive for the conveyance section.
• The conveyance speed is variable in two steps and the appropriate one is selected
according to the media type and print mode as detailed below.
Plain media
Thick stock, envelopes, postcards, label, OHP transparencies, glossy paper
20.3.2

Registration roller control

• When the media taken up and fed in by the feed roller reaches the registration roller, a
loop is formed in the media and media conveyance is temporarily stopped. Conveyance
skew is corrected by this loop.
• The registration sensor detects whether or not the media has reached the registration
roller.
• The media fed in is synchronized with the image before media conveyance is restarted.
A. Media detection control
• When the media fed from the feed roller pushes up the actuator of the registration sen-
sor, the sensor is unblocked. With this event occurring, the main body determines that
the media has reached the position before the registration roller.
Registration sensor (PS4)
Media type/print mode
Actuator
20. Conveyance section (Registration roller)
Registration roller
Media (fed from duplex)
Media (from tray 1/2/3)
Conveyance speed
144 mm/s
72 mm/s
A011T2C572AA
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