Image forming apparatus

Details Image forming apparatus Image forming apparatus

2000-02-08

2000-09-19

Brase, Sandra

Incremental printing of symbolic information

Electric marking apparatus or processes

Electrostatic

358448, B41J 2385, G03G 1304

Patent

active

061219827

ABSTRACT:
An image forming apparatus converts image data with recording density of 600 dpi which have been created in a host computer so that recording density in a vertical scanning direction is 300 dpi and recording density in a horizontal scanning direction is 1200 dpi, and outputs the converted image data to an optical system of a printer engine synchronizing with a clock frequency which is four times a normal clock frequency so as to form an image. As a result, the recording density in the horizontal scanning direction is not converted so as to be equal to the recording density in the vertical scanning direction in a conventional way, but is converted so as to have higher resolution. Therefore, an image with more improved printing quality than a conventional one can be formed by using a laser printer which can be arranged at a comparatively low price.

REFERENCES:
patent: 5231519 (1993-07-01), Koike
patent: 5321432 (1994-06-01), Ishikawa et al.
patent: 5327256 (1994-07-01), Kang et al.
patent: 5327524 (1994-07-01), Ng
patent: 5333039 (1994-07-01), Sagara
patent: 5337258 (1994-08-01), Dennis
patent: 5408338 (1995-04-01), Koike
patent: 5486927 (1996-01-01), Koizumi et al.

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