Image exposing apparatus having a beam scanner

Details Image exposing apparatus having a beam scanner Image exposing apparatus having a beam scanner

2007-07-03

2007-07-03

Pham, Hai (Department: 2861)

Incremental printing of symbolic information

Light or beam marking apparatus or processes

Scan of light

C347S246000

Reexamination Certificate

active

10323415

ABSTRACT:
An image exposing apparatus forms an image on photosensitive material by the technique of exposing and forming an image through direct modulation of a semiconductor laser device. The exposing apparatus includes a beam scanning unit for scanning a beam emitted from a semiconductor laser device to photosensitive material, a laser driving unit for driving the semiconductor laser device, the laser driving unit being operable to vary its driving current to the semiconductor laser device in accordance with a received image signal, and a laser output controller operable to measure current-beam output characteristics of the semiconductor laser device over a predetermined current range and then set a correlation between the image signal for the laser driving unit and the driving current for the semiconductor laser device, based on the measurement information.

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