Develop QC 2235 Plus Service Manual page 101

QC 2235plus Theory of Operation Ver.1.0 Mar. 2004
15.3.2 OHP detection
• To prevent failed copies of OHP transparencies, whether or not the paper type fed
through is a piece of OHP transparencies is detected using the OHP Sensor.
• OHP detection is made after a loop has been formed in the paper at the Synchronizing
Roller. If the paper type setting made using the Paper Type Setting Dial does not match
the results of OHP detection, the machine stops copying and gives a paper misfeed
warning display.
Position on Paper Type
Setting Dial or paper type
set from control panel
OHP
Other than OHP
Paper Type Setting Dial
Results of OHP Sensor
(PC27) Detection
Other than OHP
OHP
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2-71
Synchronizing Roller section
Operation
Determines that there is mismatch of paper
type, bringing all mechanisms to an immedi-
ate stop.
Gives a warning message that there is mis-
match of paper type on the display.
Synchronizing Roller
OHP Sensor (PC27)
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