Image exposing apparatus and image exposing method

Details Image exposing apparatus and image exposing method Image exposing apparatus and image exposing method

2005-03-24

2008-12-30

Pham, Hai C (Department: 2861)

Incremental printing of symbolic information

Light or beam marking apparatus or processes

Scan of light

C347S234000

Reexamination Certificate

active

07471309

ABSTRACT:
An image exposing apparatus two-dimensionally scans a printing plate precursor with a light beam modulated based on an image signal to carry out image exposure on the printing plate precursor. The image exposing apparatus includes exposing device for emitting a light beam in a pulsed form with a predetermined pulse repetition period onto the printing plate precursor; branching device for branching at least a part of the light beam emitted from the exposing device; a pulse stretcher for stretching a pulse width of a branch beam branched by the branching device; synchronous signal generator for generating a synchronous signal synchronized with the pulse repetition period of the light beam from the branch beam having the pulse width stretched by the pulse stretcher; and modulating device for modulating the light beam emitted from the exposing device with an image exposure period synchronized with the synchronous signal.

REFERENCES:
patent: 5986688 (1999-11-01), Schaaf
patent: 6275514 (2001-08-01), Katzir et al.
patent: 6784912 (2004-08-01), Beier et al.
patent: 6972268 (2005-12-01), Ehrmann et al.
patent: 2002-523905 (2002-07-01), None

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