Epson EPL-N1200 Service Manual - Page 63

Paper Feeding from the Lower Paper Cassette, Drum Charge, 1.1.2 Drum Charge

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Operating Principles EPL-N1200 Service Manual Lower Paper Cassette A maximum of 500 sheets can be loaded in the optional 500-sheet lower paper cassette. The paper size, however, must be a size that the casette is capable of handling. (The lower paper cassette unit can hold letter or A4 paper.) The driving force for paper feeding and transport is from the transmission gear. All electrical controls are performed on the printer side through the coupling connector. Paper Take-Up Rollers Transport Rollers Paper Take-Up Clutch Paper Empty Sensor Lever Lower Paper Cassette (up to two units) Transmission Gears to 2nd Lower Paper Cassette Paper Take-Up Solenoid Connector to 2nd Lower Paper Cassette Figure 2-4. Paper Feeding from the Lower Paper Cassette 2.1.1.2 Drum Charge Drum charge is the process of charging the PC drum with static electricity before laser exposure. This printer uses a brush charge method, rather than the corona charge method, to charge the drum. In the brush charge method, there is no generation of ozone as a result of corona discharge. This method also allows the drum to be charged at a low voltage, because a direct electric load is applied to the PC drum. Figure 2-5. Drum Charge 2-4 Rev. A

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Lower Paper Cassette
A maximum of 500 sheets can be loaded in the optional 500-sheet lower paper cassette. The paper
size, however, must be a size that the casette is capable of handling. (The lower paper cassette unit
can hold letter or A4 paper.)
The driving force for paper feeding and transport is from the transmission gear.
All electrical
controls are performed on the printer side through the coupling connector.
2.1.1.2 Drum Charge
Drum charge is the process of charging the PC drum with static electricity before laser exposure.
This printer uses a brush charge method, rather than the corona charge method, to charge the
drum. In the brush charge method, there is no generation of ozone as a result of corona discharge.
This method also allows the drum to be charged at a low voltage, because a direct electric load is
applied to the PC drum.
Lower Paper Cassette
(up to two units)
Connector to 2nd Lower Paper Cassette
Paper Take-Up Solenoid
Transmission Gears
to 2nd Lower Paper Cassette
Paper Take-Up Clutch
Transport Rollers
Paper Take-Up Rollers
Paper Empty
Sensor Lever
Figure 2-4.
Paper Feeding from the Lower Paper Cassette
Figure 2-5. Drum Charge
Operating Principles
EPL-N1200 Service Manual
2-4
Rev. A