Minolta PagePro 1200 Series Service Manual page 47

Paper Empty Detection
There is a Paper Empty Sensor provided on the upper side of the Multi-purpose Tray. It functions to
detect a paper-empty condition in the Multi-purpose Tray and the Manual Feed Tray.
When there is paper, the actuator is raised and thus the sensor light is blocked.
When paper runs out, the actuator drops into a cutout in the tray, thus unblocking the sensor light.
(2) Second Paper Cassette Unit (option)
Mechanism
• Since a drive motor is not installed in this unit, the drive of M1 is transmitted to the paper take-up
and transport sections in the unit via the Drive Transmission Gear.
• Although the feeding method is the same as the Multi-purpose Tray in the printer, the corner sep-
aration system is employed in this unit as the paper separating method.
• Paper is separated at the corner by the paper separation finger in the paper cassette and the
strength of paper itself (corner separation system). One sheet of paper is fed for each paper take-
up cycle.
• The Paper Take-up Solenoid (SL21) in the unit is controlled by the printer via PWB-A in the unit.
Drive Transmission
Gear
Paper Empty Detection
There is a Paper Empty Sensor provided on the Connecting Board, detecting a paper-empty condi-
tion in the Second Paper Cassette Unit.
When there is paper, the actuator is raised and thus the sensor light is blocked.
When paper runs out, the actuator drops into a cutout in the Paper Lifting Plate, thus unblocking the
sensor light.
PagePro 1200 Series Mechanical / Electrical
Paper Take-up Roller
Paper Take-up Solenoid (SL21)
47
Connecting Board (PWB-
A)
Paper Empty Sensor
(PI2)
Paper
4127s024