Ricoh M178-21, Руководство по обслуживанию на месте

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Overview
Paper Path
1 Paper Tray 7 Hot Roller
2 Paper feed Roller 8 Pressure Roller
3 Paper Transport Rollers 9 Exit Sensor
4 Registration Sensor 10 Paper Exit Rollers
5 Drum 11 Output Tray
6 Image Transfer Roller
When paper passes through the machine:
• Paper (up to 50 sheets) is loaded in the paper tray (1). The paper feed roller (2), driven by the
main motor and engaged by the bypass solenoid, starts to rotate while a cam on the paper
transport roller (3) (also driven by the main motor) raises the bottom plate of the tray against the
paper feed roller above. This pressure and the rotation of the paper feed roller, feeds the sheet of
paper from the tray.
• The paper feeds between the nip of the paper transport rollers.
• The registration sensor (4) detects the leading edge of the paper. This triggers the laser unit above
which writes the image onto the drum. The registration sensor will trigger an error if the leading and
trailing edge of the paper does not pass within the prescribed time. (The timing is different,
depending on the lengths of different paper sizes.)
• The paper passes through the nip of the drum (5) and transfer roller (6). The image transfer roller
pulls the toner image from the drum onto the paper.
• The toner image is fused onto the paper when it passes through the nip of the hot roller (7) and
pressure roller (8).
1. Product Information
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