Radiation imagery chemistry: process – composition – or product th – Electric or magnetic imagery – e.g. – xerography,... – Post imaging process – finishing – or perfecting composition...
Patent
1990-07-26
1992-08-18
Goodrow, John
Radiation imagery chemistry: process, composition, or product th
Electric or magnetic imagery, e.g., xerography,...
Post imaging process, finishing, or perfecting composition...
430109, G03G 9083
Patent
active
051399148
ABSTRACT:
A developer for developing electrostatic latent images is constituted by a toner, and negatively chargeable spherical resin particles having an average particle size of 0.03-1.0 micron and a volume resistivity of 10.sup.6 -10.sup.12 ohm.cm. The toner may comprise toner particles and hydrophobic inorganic fine powder, which is generally used in a larger amount than the negatively charageable spherical resin particles. The negatively chargeable spherical resin particles function to provide a toner image which is faithful to an electrostatic latent image formed on a photosensitive member while preventing toner-sticking onto the photosensitive member preferably in combination with a contact-charging means for charging the photosensitive member.
REFERENCES:
patent: 3909258 (1975-09-01), Kotz
patent: 4816365 (1989-03-01), Ishikawa
patent: 4837101 (1989-06-01), Gruber et al.
patent: 4891294 (1990-01-01), Noguchi
patent: 4933251 (1990-06-01), Ichimura et al.
Imai Eiichi
Kukimoto Tsutomu
Takiguchi Tsuyoshi
Tomiyama Koichi
Yusa Hiroshi
Canon Kabushiki Kaisha
Goodrow John
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