Panasonic UB-5335 / UB-5835 (serv.man2) Service Manual ▷ View online
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6.3.
Printing Mechanism
6.3.1.
Paper Feed
After copying operation starts, a little later from the start of screen copy, printing operation starts. First, the Printer Motor is rotated
in the direction of the arrow (1) to connect the Change Gear to the Pick-up Gear Block. Doing so enables the Pick-up Roller to feed
the paper at the Paper Cover to the printing section.
in the direction of the arrow (1) to connect the Change Gear to the Pick-up Gear Block. Doing so enables the Pick-up Roller to feed
the paper at the Paper Cover to the printing section.
The Cork Rubber is allocated at the opposite side of the Pick-up Roller to separate multiple sheets of paper set at the Paper Cover.
Only one sheet of paper is fed from many sheets of paper that are set, using the principle that the frictional force between the Cork
Rubber and the paper is greater than that between the sheets of paper.
Only one sheet of paper is fed from many sheets of paper that are set, using the principle that the frictional force between the Cork
Rubber and the paper is greater than that between the sheets of paper.
(1)
Pick-up Roller
Pick-up Gear Block
Change Gear
Printer Motor
Pick-up Gear Block
Cork Rubber
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6.3.2.
Printing
When the Top Sensor detects the leading edge of the sheet of paper fed by the Pick-up Roller and the leading edge is sent to the
Platen Roller, the rotation direction of the Printer Motor changes to the direction of arrow (2) (reverse rotation).
By this operation, the Change Gear switches to the Transfer Gear Block, and the paper is output to the Output Port while printing
between the Thermal Transfer Film and the Platen Roller.
Platen Roller, the rotation direction of the Printer Motor changes to the direction of arrow (2) (reverse rotation).
By this operation, the Change Gear switches to the Transfer Gear Block, and the paper is output to the Output Port while printing
between the Thermal Transfer Film and the Platen Roller.
Transfer Gear Block
Transfer Gear Block
Platen Roller
Thermal Transfer Film
(2)
Change Gear
Thermal Transfer Film
Output Port
Input Port
Paper Cover
Hopper
Top Sensor
Printer Motor
Paper Sensor
Pick-up Roller
Note: Bold line: Paper path route
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6.4.
Sensors
6.4.1.
Screen Home Position
The Panaboard recognizes the screen default (home) position by detecting the Home Marker (Black) attached to the lower part of
the Screen (Film) with the Home Sensor.
the Screen (Film) with the Home Sensor.
6.4.2.
Door Sensor
The Door Sensor includes the photo-interrupter, and detects open or closed state of the Printer Door. The state changes depending
on whether the Claw of the Main Paper Path blocks the Door Sensor.
on whether the Claw of the Main Paper Path blocks the Door Sensor.
Note:
When the Printer Door is closed, the Door Sensor normally turns off.
DOOR SENSOR Board
Door Sensor
Claw(of the Main Paper Path)
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6.4.3.
Paper Sensor
The Paper Sensor includes the photo-interrupter, and detects whether or not a sheet of paper is set on the Paper Cover.
When the sheet of paper is set, the Actuator for the Paper Sensor is opened and the blocking of the light is released.
When the sheet of paper is set, the Actuator for the Paper Sensor is opened and the blocking of the light is released.
Note:
When there is a sheet of paper, the Paper Sensor normally turns on.
Paper Sensor
Actuator
Actuator
Paper Sensor
Paper
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