U.S. patents available from 1976 to present.
U.S. patent applications available from 2005 to present.

Laser beam scanner apparatus

Patent 4612555 Issued on September 16, 1986. Estimated Expiration Date: Icon_subject July 5, 2004. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Patent References

3787107

Apparatus and method for correcting imperfection in a polygon used for laser scanning
Patent #: 4214157
Issued on: 07/22/1980
Inventor: Check, Jr. ,   et al.

Laser recording system
Patent #: 4306242
Issued on: 12/15/1981
Inventor: Jeffery

Laser recorder reproducing a picture having half-tones of high accuracy
Patent #: 4384297
Issued on: 05/17/1983
Inventor: Ohara ,   et al.

Multilevel image printing device
Patent #: 4434431
Issued on: 02/28/1984
Inventor: Ohkubo ,   et al.

Mirror structure Patent #: 4482209
Issued on: 11/13/1984
Inventor: Grewal ,   et al.

Inventors

Assignee

Application

No. 06/627891 filed on 07/05/1984

US Classes:

347/247, Driving circuitry347/132, Beam generator driving means347/134, Optical elements interposed between record receiver and beam generator347/260, Having deflector358/302Photographic

Examiners

Primary: Goldberg, E. A.
Assistant: Peco, Linda M.

Attorney, Agent or Firm

International Classes

H04N 1/401 (20060101)
G06K 15/12 (20060101)

Foreign Application Priority Data

1983-07-08 JP

Abstract

In a laser beam scanner apparatus for scanning the surface of a photosensitive drum or a document to be read by deflecting a laser beam emitted from a laser diode with a deflector, there is provided a drive current control circuit for controlling the magnitude of drive current of said laser diode on the basis of a beam deflection angle of said deflector.

Other References

  • Jenkins et al, Fundamentals of Optics, 3rd Edition McGraw-Hill, pp. 520-521, 1957
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