Radiation imagery chemistry: process – composition – or product th – Electric or magnetic imagery – e.g. – xerography,... – Post imaging process – finishing – or perfecting composition...
Patent
1979-02-26
1982-09-21
Kittle, John E.
Radiation imagery chemistry: process, composition, or product th
Electric or magnetic imagery, e.g., xerography,...
Post imaging process, finishing, or perfecting composition...
430122, 430903, G03G 1309
Patent
active
043507492
ABSTRACT:
A reverse development is performed with application of development bias voltage to a development sleeve at the time of development, and the polarity of the bias voltage is reversed or the bias voltage is reduced to zero at the time of non-development. Furthermore, positive images and negative images can be selectively formed by changing the voltage to be applied to a charge injection electrode, without changing the bias voltage to be applied to the development sleeve.
REFERENCES:
patent: 3262806 (1966-07-01), Gourge
patent: 3674532 (1972-07-01), Morse
patent: 3850662 (1974-11-01), Jahn
patent: 4121931 (1978-10-01), Nelson
Rayford et al., "Reversal Development of Continuous-Tone Xerographic Images P&E" vol. 6, #3, 1955.
Miyakawa Seiichi
Ohnuma Teruyuki
Oyama Hajime
Goodrow John L.
Kittle John E.
Ricoh & Company, Ltd.
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