Photocopying – Contact printing – Light boxes
Patent
1988-05-16
1990-08-28
Braun, Fred L.
Photocopying
Contact printing
Light boxes
354317, G03G 1510
Patent
active
049529803
ABSTRACT:
A processing head for use in an electrophotographic apparatus which is designed to bring successive frames of an elongated photosensitive material to a developing section. In the developing section a developing agent is supplied to develop the images on the successive frames. A small amount of this developing agent leaks out of the developing section through minute gaps between the structure of the developing mask and the photosensitive material. To remove this developer leakage a guide groove area is provided to substantially surround the developing mask. This groove area has an exhaust opening which opens to the external environment surrounding the processing head. Pressurized air is supplied to this guide groove area to blow the leakage developer out of the groove and out through the portion which is open to the external environment.
REFERENCES:
patent: 3027821 (1962-04-01), Wright
patent: 3196832 (1965-07-01), Zin
patent: 3936854 (1976-02-01), Smith
patent: 4591543 (1986-05-01), Outsuka et al.
patent: 4600291 (1986-07-01), Ohtsuka et al.
patent: 4622915 (1986-11-01), Ohtsuka et al.
patent: 4623240 (1986-11-01), Kimura et al.
patent: 4727393 (1988-02-01), Ohtsuka et al.
Sato Yosimitu
Yamana Keiichi
Yoda Akira
Braun Fred L.
Fuji Photo Film Co. , Ltd.
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