| Revision A |
2.1.1 General Description of Each Section
Paper Feed Section
Paper is fed from either the MP Tray or Cassette 1 (universal cassette). When the printer receives a print command, the paper
The timing roller front sensor (PC2) detects the fed paper and the paper is fed to the timing roller for printing.
<Optional cassettes>
When optional cassette
NOTE:The optional cassettes are the same as the Cassette 1
(universal cassette).
Print Head Unit (Exposure Section)
The laser diode in the print head unit emits a laser beam corresponding to the print data. The laser beam falls on the rotating heptagonal polygon mirror to produce a scanning beam, producing an electrostatic latent image on the surface of the PC drum in the
imaging cartridge.
Imaging Cartridge
The imaging cartridge consists of the charging section and development section. The moving parts of the imaging cartridge are driven by the I/C drive motor (M1). In the development section, toner is fed to the electrostatic latent image formed on the surface of the
PC drum to produce a visible toner image on the PC drum.
Transfer Section
The transfer section transfers the toner image on the surface of the PC drum onto the paper.
Fusing Section
Using a heated roller, the fusing section permanently fixes the toner image onto the paper. The fusing temperature is controlled by using a heat sensitive element (thermistor) attached to the upper fusing roller.
Paper Exit Section
The paper which has passed the fusing section is ejected to the top of the printer with the paper exit roller. The paper exit sensor (PC3) senses the ejection of the paper.
When the optional duplex unit are installed:
For duplex printing, the trailing edge of the printed paper is drawn inside the duplex unit by the switch back motor in the duplex unit. Then, the paper is fed to the manual unit by the transport motor in the duplex unit and waits for the 2nd print command.
Operating Principles | Printer Mechanism Operating Principles | 52 |
