The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Date of Patent:
Sep. 02, 1997

Filed:

Aug. 29, 1995
Applicant:
Inventor:

Shigeru Ainai, Kawasaki, JP;

Assignee:

Fujitsu Limited, Kawasaki, JP;

Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04N / ;
U.S. Cl.
CPC ...
358296 ; 358404 ; 395115 ;
Abstract

A page printer has a printing unit for printing an image on a printing sheet based on bit-mapped data supplied from an external unit line by line. The page printer includes at least three buffers for storing bit-mapped data, a selecting system for selecting each of the three buffers as one of an input buffer, an output buffer and a working buffer, the input buffer being used to store bit-mapped data supplied from the external unit, the output buffer being used to supply bit-mapped data to the printing unit, the working buffer being used to process bit-mapped data, and a processing unit for processing the bit-mapped data using one of the three buffers selected as the working buffer.


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