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8 media size error detection control, 8 size error detection control -92 – Konica Minolta 5430 DL 5440 DL 5450 User Manual

Page 129

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Conveyance Section

Main Unit Theory of Operation

2-92

II Comp

osition

/O

p

eration

15.3.8

Media size error detection control

• To prevent incorrect printed pages, the size of the media being conveyed is detected

using the Synchronizing Roller Sensor (PC4) and Lower Feeder Paper Feed Sensor
(PC3 PF: option).

• The length of the media is detected based on the value calculated using the period of

time that begins when the sensor is activated and ends when it is deactivated for each
media source.

• For the Lower Feeder Unit, even if the Lower Feeder Paper Feed Sensor (PC3 PF) does

not detect a media size error, the downstream Synchronizing Roller Sensor (PC4) makes
an error check again.

• If there is a mismatch between the media size setting and the results of media size

detection, the machine suspends the print cycle and displays the message “SIZE/TYPE
ERROR (magicolor 5430 DL/5440 DL)” or “PAPER ERROR (magicolor 5450)” on the
panel.

• The media that has caused size error is fed out of the machine after going through the

2nd transfer and fusing processes.

• The subsequent sheets of media are subjected to the following operation.

Media state

Feed operation

Print operation

Exit operation

Media

Print

Feed

“TYPE ERROR” media

Feed

Print

Exit

Subsequent

sheets

Yet to be printed

Yet to be

fed

Suspend

Suspend

Suspend

Printed

Feed

Print

Exit

Yet to be printed

Fed

Feed

Print

Exit

Printed

Feed

Print

Exit

Media source

Media length detection sensor

Starting point

Ending point

Tray 1

Synchronizing Roller Sensor (PC4)

Synchronizing
Roller Clutch (CL2)
energized

PC4 deactivated

Lower Feeder Unit
(Tray 2)

Lower Feeder Paper Feed Sensor
(PC3 PF: Tray 2)

PC3 PF activated

PC3 PF deacti-
vated

Synchronizing Roller Sensor (PC4)

CL2 energized

PC4 deactivated

Lower Feeder Unit
(Tray 3)

Lower Feeder Paper Feed Sensor
(PC3 PF: Tray 3)

PC3 PF activated

PC3 PF deacti-
vated

Lower Feeder Paper Feed Sensor
(PC3 PF: Tray 2)

PC3 PF activated

PC3 PF deacti-
vated

Synchronizing Roller Sensor (PC4)

CL2 energized

PC4 deactivated

Duplex Unit

No media length is detected.

Media state

Feed operation

Print operation

Exit operation

Media

Print

Feed

Size error media

Feed

Print

Exit

Subsequent

sheets

Yet to be printed

Yet to be

fed

Suspend

Suspend

Suspend

Printed

Feed

Print

Exit

Yet to be printed

Fed

Feed

Print

Exit

Printed

Feed

Print

Exit

5430DL_5440DL_5450_TO_PDF.book 92 ページ 2005年4月12日 火曜日 午後4時49分