Compositions – Electrolytes for electrical devices
Patent
1977-05-20
1978-09-05
Goolkasian, John T.
Compositions
Electrolytes for electrical devices
427 18, 252 6253, 252 6254, 428403, 428407, G03G 914, G03G 908
Patent
active
041118235
ABSTRACT:
The present invention provides a dry developing powder prepared by mixing (A) a magnetic powder having a mean grain size of 10-30.mu. and which consists essentially of wax or thermoplastic resin and pulverized magnetic substance, with (B) a powder having a mean grain size of 5-20.mu. and which consists essentially of thermoplastic resin. The powder (B) may also contain pulverized magnetic substance in an amount less than that of powder (A). Powder (B) may also contain a dye as polarity-controlling agent. Fillers such as calcium carbonate, magnesium oxide talc and magnesium silicate may be incorporated into either powder to control bridging phenomena. Use of these developing powder facilitates pressure fixing as well as thermal fixing, and particularly provides an image having excellent continuous gradation.
REFERENCES:
patent: 3060051 (1962-10-01), Johnson et al.
patent: 3287150 (1966-11-01), Lehmann
patent: 3349703 (1967-10-01), Varron et al.
patent: 3627682 (1971-12-01), Hall et al.
patent: 3698005 (1972-10-01), Nacci et al.
patent: 3895125 (1975-07-01), Tsuchiya et al.
Inaba Norihiko
Kobayashi Kazuo
Suzuki Akira
Tanaka Motoharu
Yuyama Hisao
Goolkasian John T.
Ricoh Co. Ltd.
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