LASER CLASS 730i/720i/710 Chapter 2: Technical Reference
2-20
Figure 2-8 Twin beam method
The ECU board sends the laser control (CNT0, CNT1, CNT2) signals to the laser driver in the
Laser/Scanner unit. Meanwhile, the SCNT board sends the VIDEO (nVDATA1, VDATA1,
nVDATA2, VDATA2) signals to the laser driver via the ECU board.
According to these signals, the laser driver performs laser diode emission.
The two laser beams pass through the collimator and cylindrical lenses and strikes the scanning
mirror, which is rotating at a constant speed. The laser beams reflected off the scanning mirror
focus on the photosensitive drum after passing through the focusing lens and reflective mirror.
The scanning mirror rotates at a constant speed so that the laser beams scan across the
photosensitive drum at a constant speed. This forms a latent image on the photosensitive drum
surface.
LD1 scanning line
LD2 scanning line
Paper feed direction
Imaging area
1st scanning
2nd scanning
3rd scanning
4th scanning
Summary of Contents for LASER CLASS 730i
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Page 10: ...Chapter 1 General Description manuals4you com manuals4you com...
Page 41: ...Chapter 2 Technical Reference...
Page 62: ...Chapter 3 Assembly and Disassembly manuals4you com manuals4you com...
Page 83: ...Chapter 4 Maintenance and Service...
Page 208: ...Chapter 5 Appendix manuals4you com manuals4you com...
Page 239: ...LASER CLASS 730i 720i 710 Chapter 5 Appendix 5 31 Figure 5 32 Handset Installation 2...
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Page 345: ...2 31 LASER CLASS 730i 720i 710 2 PARTS LAYOUT PARTS LIST FIGURE 16 DOCUMENT TRAY ASS Y 1...
Page 379: ...2 65 LASER CLASS 730i 720i 710 2 PARTS LAYOUT PARTS LIST FIGURE 33 NCU BOARD ASS Y T1 T51...
Page 381: ...2 67 LASER CLASS 730i 720i 710 2 PARTS LAYOUT PARTS LIST FIGURE 34 ECU BOARD ASS Y 2 1 IC901...
Page 383: ...2 69 LASER CLASS 730i 720i 710 2 PARTS LAYOUT PARTS LIST FIGURE 35 EPU BOARD ASS Y 4 2 3 1 4...
Page 409: ...2 95 LASER CLASS 730i 720i 710 2 PARTS LAYOUT PARTS LIST FIGURE 48 PCL UNIT 3 2 4 5 IC2 1...
Page 415: ...3 1 3 1 3 TOOL LASER CLASS 730i 720i 710 3 TOOL FIGURE 51 TOOLS T2 T1 T3...
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