Ricoh JP5000 Service Manual page 74

DRUM
Drum Rotation Speed during Idling
Whether the machine is in Quality Start mode or not, the drum idling roller is
always used for the trial print (the print to complete the master making), and for the
first and second prints. If a low temperature condition is detected, the drum idling
roller is also used for the third print.
The drum rotation speed varies during this mode as shown in the table below. In all
cases, the drum idling roller returns to home position when drum rotation speed
reaches 75 rpm.
- Change of drum rotation speed (rpm) with temperature -
Temperature
Print
Normal or
16
High
Idling
(above 15
Roller On
°C)
Low
16
(below 15
Idling
°C)
Roller On
NOTE: These figures apply to the highest printing speed (speed 5, which is at 120
rpm).
Trial
1st Print
30 60
Idling Idling
Roller On Roller On
16 30
Idling Idling
Roller On Roller On
2nd
3rd Print 4th Print
Print
75
Idling
90
Roller
Returned
75
60
Idling
Idling
Roller
Roller On
Returned
2-46
1 July, 1998
5th 6th 7th
Print Print Print
105 120 120
90 105 120