Photocopying – Projection printing and copying cameras – Combined with or convertible to a contact printer
Patent
1985-11-05
1987-02-10
Prescott, A. C.
Photocopying
Projection printing and copying cameras
Combined with or convertible to a contact printer
355 3DD, 355 14D, 355 3TR, 355 3CH, 355 14CH, 250324, G03G 1508
Patent
active
046419551
ABSTRACT:
A recording apparatus for use with a copier, a printer or the like which utilizes an ion projection recording system for recording images on plain papers. Toner is carried by toner transport means and charged to a first polarity, while a transfer member is fed by feeding means to make contact with or come close to the toner layer on the transport means. Ion generating means is located at the opposite side to the charged toner layer with respect to the transfer member and generates ions having a second polarity which is opposite to the polarity of the toner or having both a polarity common to that of the toner and a second polarity opposite to the same. The streams of ions are controlled pixel by pixel by ion stream control means responsive to image data which should be recorded, so that the toner particles are selectively deposited on the transfer member by Coulomb's force which acts between the ions and the charged toner.
REFERENCES:
patent: 4341457 (1982-07-01), Nakahata et al.
patent: 4402591 (1983-09-01), Nakahata
patent: 4411512 (1983-10-01), Springer
patent: 4482240 (1984-11-01), Kuge et al.
patent: 4575216 (1986-03-01), Hebert et al.
Prescott A. C.
Ricoh & Company, Ltd.
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