Ohp Transparencies Detection Control - Konica Minolta magicolor 5550 Service Manual

19. Conveyance section (Registration roller)
19.3.7

OHP transparencies detection control

• To prevent incorrect prints on OHP transparencies, the type of the media being conveyed
is detected by the OHP sensor.
• The OHP detection is made after the loop has been formed in the media before the reg-
istration roller.
• If the output voltage of the OHP sensor is less than a predetermined value, the main
body considers that the media is a type other than OHP transparencies. If the output volt-
age is the predetermined value or more, the main body determines that the media is
OHP transparencie.
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OHP sensor (PS7)
• If the media type setting does not match the results of OHP detection, the main body
suspends the print cycle and displays the message "TRAYX TYPE ERROR" on the
panel.
• The media that has caused type error is fed out of the main body after going through the
2nd transfer and fusing processes. The subsequent sheets of media are subjected to the
following operation.
Media state
Media type error
Yet to be printed
Printed
Subsequent
sheets
Yet to be printed
Printed
80
Registration roller
Prism
Sensor output
LED Remote
Feed operation
Feed
Suspend
Yet to be
fed
Feed
Feed
Fed
Feed
Theory of operation Ver. 1.0 Nov. 2006
Sensor
Print operation
Print
Suspend
Print
Print
Print
Prism
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Exit operation
Exit
Suspend
Exit
Exit
Exit