Multi-beam scanning apparatus
1. Field of the Invention A multi-beam scanning apparatus has a scanning unit that has a plurality of semiconductor lasers and scans laser beams emitted from the plurality of semiconductor lasers; and a controller that transmits a standard signal associated with a control of the plurality of semicon...
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| Format | Patent |
| Language | English |
| Published |
07.12.2004
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| Online Access | Get full text |
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| Summary: | 1. Field of the Invention
A multi-beam scanning apparatus has a scanning unit that has a plurality of semiconductor lasers and scans laser beams emitted from the plurality of semiconductor lasers; and a controller that transmits a standard signal associated with a control of the plurality of semiconductor lasers to the scanning unit. The controller has a standard signal generator that generates and outputs a sequence of pulse signals as the standard signal. The scanning unit has a plurality of laser drivers, a standard voltage generator, and a standard voltage setter. The standard voltage setter detects each of a plurality of common pulse signal sections of the standard signal in accordance with its signal-wave characteristic, and transmits each value of the plurality of standard voltage sections to a corresponding laser driver in accordance with a detected common pulse signal section. |
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