Photocopying – Projection printing and copying cameras – Combined with or convertible to a contact printer
Patent
1982-07-30
1985-05-07
Grimley, A. T.
Photocopying
Projection printing and copying cameras
Combined with or convertible to a contact printer
355 27, 118647, 118659, G03G 1510
Patent
active
045154635
ABSTRACT:
A toner flow control system for liquid toner within camera/processor apparatus includes the disposition of a development electrode portion (30) and the electrophotographic film (14) within planes inclined with respect to a horizontal plane at an angle of between 30.degree. and 60.degree.. The film (14) and electrode (30) define a toner flow channel (32) therebetween which is also therefore inclined with respect to the horizontal plane at the same angle, whereby the flow of the liquid toner (36) through the channel (32) is able to be controlled and uniformly distributed over the electrode (30) and film (14). In addition, gravity discharge (46) of the toner (36) from the channel (32) is able to be accomplished without the need for special sealing devices to confine the toner within the toner cell. The controlled flow of the toner within the channel (32) eliminates the need for substantial negative pressure or vacuum suction systems normally employed in conjunction with vertically oriented toner channels.
REFERENCES:
patent: 3839071 (1974-10-01), Borelli
patent: 4141647 (1979-02-01), Lempke et al.
patent: 4383019 (1983-05-01), Simm
Grimley A. T.
Pendegrass J.
Photon Chroma, Inc.
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