Radiation imagery chemistry: process – composition – or product th – Electric or magnetic imagery – e.g. – xerography,... – Radiation-sensitive composition or product
Patent
1988-04-28
1989-10-31
Welsh, J. David
Radiation imagery chemistry: process, composition, or product th
Electric or magnetic imagery, e.g., xerography,...
Radiation-sensitive composition or product
430109, 430904, 430124, G03G 1320
Patent
active
048777048
ABSTRACT:
Toner for developing an electrostatic latent image comprising (a) a polyester resin of a non-linear copolymer having, as its side chain, an aliphatic hydrocarbon group containing therein 3 to 22 carbon atoms, said copolymer being obtained from polymerization of an etherified bisphenol monomer, a di-carboxilic acid monomer, and a polyhydric alcohol of tri-hydric or more and/or a monomer component containing a polycarboxylic acid monomer of tricarboxylic acid or more carboxylic or more, and at least one compound selected from the group consisting of (b) an alkylene-bis-aliphatic acid amide compound represented by the general formula; ##STR1## wherein R.sub.1 and R.sub.2 are independently selected from saturated or unsaturated aliphatic hydrocarbon groups having not less than 10 carbon atoms, R.sub.3 and R.sub.4 are independently selected from a hydrogen atom and a group represented by --OCR.sub.5 wherein R.sub.5 is a saturated or unsaturated hydrocarbon group and n is a positive integer and (c) a wax containing not less than 20% by weight of ester component, the needle penetration degree of wax being not more than 4.
REFERENCES:
patent: 2297691 (1942-10-01), Carlson
patent: 3510338 (1970-05-01), Varron
patent: 3590000 (1971-06-01), Palermiti et al.
patent: 3951835 (1976-04-01), Tomomo et al.
patent: 4099968 (1978-07-01), Scouten et al.
Akimoto Kunio
Shirose Meizo
Takagiwa Hiroyuki
Takahashi Jiro
Uchida Masafumi
Konishiroku Photo Industry Co,., Ltd.
Welsh J. David
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