Heat exhaust duct for image forming apparatus operable in a vert

Details Heat exhaust duct for image forming apparatus operable in a vert Heat exhaust duct for image forming apparatus operable in a vert

1994-08-17

1996-04-30

Ramirez, Nestor R.

Photocopying

Contact printing

Light boxes

355215, 355282, G03G 2100

Patent

active

055129757

ABSTRACT:
Disclosed is an image forming apparatus for forming a toner image on a sheet both in a horizonal installation and in a vertical installation of the apparatus. The image forming apparatus is designed so that an air flow from a thermal fixing unit exerts no influence on an image forming operation of a photosensitive body and a temperature detection operation of the thermal fixing unit even when installed horizontally or vertically. This image forming apparatus therefore includes an exhaust duct for guiding a gas of an interior of the thermal fixing unit in an upper oblique direction from the thermal fixing unit to exhaust the interior of the thermal fixing unit. The air flow from the thermal fixing unit does not therefore influence an image formation on the photosensitive body even when the apparatus is installed horizontally or vertically.

REFERENCES:
patent: 4248520 (1981-02-01), Kurita et al.
patent: 4571056 (1986-02-01), Tani et al.
patent: 5164778 (1992-11-01), Tanabe et al.
patent: 5325158 (1994-06-01), Guelfo et al.
patent: 5457517 (1995-10-01), Katakabe et al.

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