Photocopying – Projection printing and copying cameras – Combined with or convertible to a contact printer
Patent
1978-11-30
1980-07-08
Braun, Fred L.
Photocopying
Projection printing and copying cameras
Combined with or convertible to a contact printer
1525651, G03G 2100
Patent
active
042114845
ABSTRACT:
A drum cleaning blade for a image transfer type of copying machine which has a rotatable drum provided thereon with a photo-sensitive cylindrical layer in which an electrostatic latent image of an original to be copied is produced and developed by a toner powder. The blade comprises a main sheet-like center portion having a straight lower edge and a pair of side portions from which triangular projections extend forwardly, respectively. The inner edges of the triangular projections are slanted outwardly.
The side portions in which the triangular projections are formed are separated from the main portion through cuts.
The lower edge as well as the slanted inner edges of the triangular projections are caused to bear on the outer cylindrical surface of the drum thereby to scrape off the toner particles remaining as deposited on the drum surface after the transfer processing of the toner image to a transfer sheet. The inner slanted edges of the triangular projections serve to prevent the toner particles as scraped off from being scattered laterally outwardly from the drum.
REFERENCES:
patent: 3927936 (1975-12-01), Komori et al.
patent: 4056315 (1977-11-01), Ariyama et al.
Iwai Fumio
Koiso Jun-ichi
Kokiso Masakazu
Ogino Tamio
Braun Fred L.
Konishiroku Photo Industry Co,., Ltd.
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