Incremental printing of symbolic information – Light or beam marking apparatus or processes – Scan of light
Patent
1996-03-21
1998-10-06
Reinhart, Mark J.
Incremental printing of symbolic information
Light or beam marking apparatus or processes
Scan of light
347232, B41J 247
Patent
active
058185062
ABSTRACT:
The present invention provides an optical exposer unit having a large space for containing black toner, and a color image forming apparatus comprising the optical exposer unit. In an optical exposer unit, first and second laser beams, which are reflected on the respective reflection surfaces of a polygonal mirror unit and passed in a direction farther from a photosensitive drum than an optical axis of an optical system including first to third image-forming lenses, are reflected on second mirrors, and mutually crossed each other so as to be guided to the photosensitive drum corresponding to third mirrors. Thereby, a sufficient space is provided to the surroundings of a black image forming section. Therefore, the space for containing black toner can be largely ensured as compared with the space for containing the other color toner.
REFERENCES:
patent: 4107701 (1978-08-01), Sprague et al.
patent: 4578688 (1986-03-01), Okuno
patent: 5179462 (1993-01-01), Kageyama et al.
patent: 5181137 (1993-01-01), Koide
patent: 5276463 (1994-01-01), Andrews
patent: 5552863 (1996-09-01), Genovese
Shiraishi Takashi
Yamaguchi Masao
Kabushiki Kaisha Toshiba
Reinhart Mark J.
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