Print device having a recording matrix switching device

Details Print device having a recording matrix switching device Print device having a recording matrix switching device

1995-02-22

1997-07-08

Frahm, Eric

Facsimile and static presentation processing

Facsimile

Recording apparatus

358298, 358457, 358488, H04N 104, H04N 140

Patent

active

056467397

ABSTRACT:
In a print device using a systematic dither method, a sheet direction is identified by a sheet printing direction identifying unit. If the direction is identified as a lateral direction, threshold values of a recording matrix are rotated by 90 degrees by a threshold value altering unit. A binary image is reproduced from halftone image data on the basis of the recording matrix by the systematic dither method.

REFERENCES:
patent: 4933720 (1990-06-01), Takano et al.
patent: 5228118 (1993-07-01), Sasaki
patent: 5313257 (1994-05-01), Kashima et al.
patent: 5508810 (1996-04-01), Sato

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