Photocopying – Contact printing – Light boxes
Patent
1992-11-30
1995-02-14
Fuller, Benjamin R.
Photocopying
Contact printing
Light boxes
219216, 355 28, 355 30, G03G 2100
Patent
active
053900065
ABSTRACT:
An image forming apparatus having improved air flow and/or handling of toner or other debris between a fixing device and an image carrier. In accordance with one aspect of the invention, the completeness and effectiveness of an air exhaust system of an image forming apparatus is improved by utilizing a flow improvement board which is located between the image carrier and the fixing device. The flow improvement board can be mounted upon the fixing device and extends downwardly beyond the fixing device. The flow improvement board provides a more regular flow of air toward the exhaust device thereby improving the effectiveness and completeness of the exhaustion of air. In addition, in accordance with another aspect of the invention, a magnet can be provided upon the board or associated with the fixing device, with the magnet including a plurality of poles which alternately extend along the widthwise direction of the mixing device. The magnet removes floating toner, and is oriented for most effective results with the flow produced by the flow improvement board.
REFERENCES:
patent: 3357325 (1967-12-01), Eichorn et al.
patent: 4571056 (1986-02-01), Tani et al.
patent: 4693588 (1987-09-01), Yarbrough et al.
patent: 4974033 (1990-11-01), Yamada et al.
patent: 5121168 (1992-06-01), Aoki et al.
patent: 5210576 (1993-05-01), Haneda et al.
Kasahara Rikio
Okamoto Keiji
Wakabayashi Tomio
Barlow John
Fuller Benjamin R.
Ricoh & Company, Ltd.
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