Canon LASER CLASS 730i Service Manual page 60

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5. NEW FUNCTION

5.1 Twin Beam Method (Laser/Scanner System)

Focusing lens

The Laser/Scanner unit is structured with the laser driver, the scanner motor and etc. It is

controlled by the signals input from the ECU board and the SCNT board.

This machine employs the "Twin beam method" which scans two lines simultaneously with two

laser diodes in the Laser/Scanner unit.

These two diodes (LD1, LD2) emit for a single scanning so that two lines are written

simultaneously. Thus, this method enables high-resolution printing without decreasing the print

LASER CLASS 730i/720i/710 Chapter 2: Technical Reference

Scanning mirror

Scanner motor

Figure 2-7 Laser/Scanner Unit

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Cylindrical lens

Laser driver

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