Model K-C3.5L
21
Ricoh Co. Ltd.
http://www.ricoh.com/
Slide 21
Copy Process
Development
Laser exposure
Drum charge
Cleaning
Image transfer
Paper separation
More on the Copy Process
The photoconductor unit (PCU) contains the drum, development roller, and
charge roller.
A charge roller gives the drum a negative charge.
The laser beam writes a latent image on the drum, switching on to discharge the
drum when writing black parts of the image. Toner is attracted to these
discharged parts of the drum.
The transfer roller applies a positive current to the reverse side of the paper (the
size of the current depends on the resolution and the paper size). This pulls the
toner off the drum and onto the paper.
The electrostatic pull from the transfer roller separates the paper from the drum.
There is also a discharge plate, which is grounded.
The quenching lamp removes residual charge from the drum.
The ID sensor and TD sensor are used for toner supply control.
Summary of Contents for K-C3.5L
Page 122: ...Model K C3 5L 122 Ricoh Co Ltd http www ricoh com Slide 122 ADF DF2000 No additional notes...
Page 130: ...Model K C3 5L 130 Ricoh Co Ltd http www ricoh com Slide 130 ARDF DF2010 No additional notes...
Page 193: ...Model K C3 5L 193 Ricoh Co Ltd http www ricoh com Slide 193 End of Course...