Heat-fixable dry system toner
AssigneeCanon Kabushiki Kaisha
InventorsHiroshi Fukumoto, Sukejiro Inoue, Masumi Sasakawa, Shinji Doi
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Abstract
A toner, fixable sufficiently at lower temperatures to afford energy saving, particularly suitable for high speed fixing and also good in off-set resistance with a broad applicable temperature range for fixing, is obtained from a heat-fixable dry system toner comprising in a binder resin a non-linearly modified low melting polyester having an acid value of 10 to 60 obtained from components containing (A) an alkyl-substituted dicarboxylic acid and/or an alkyl-substituted diol, (B) a trivalent or more polycarboxylic acid and/or a trivalent or more polyol, (C) a dicarboxylic acid, and (D) an etherated diphenol.
Claims32
A heat-fixable dry system toner powder comprising a colorast and in a binder resin a non-linearly modified low melting polyester having an acid value of 10 to 60 obtained from components containing (A) an alkyl-substituted dicarboxylic acid and/or an alkyl-substituted diol, (B) a trivalent or more polycarboxylic acid and/or a trivalent or more polyol, (C) an aromatic dicarboxylic acid, and (D) an etherated diphenol.
A heat-fixable dry system toner powder comprising a colorant and in a binder resin a non-linearly modified low melting polyester having an acid value of 10 to 60 obtained from components containing (A) 10 to 25 wt. % of an alkyl-substituted dicarboxylic acid and/or an alkyl-substituted diol based on the polyester, (B) a trivalent or more polycarboxylic acid and/or a trivalent or more polyol, (C) 50 mole % of an aromatic dicarboxylic acid in the total acid component, and (D) an etherated diphenol.
A heat-fixable dry system toner powder comprising a colorant and a binder resin, containing a non-linearly modified low melting aromatic polyester having an acid value of 10 to 60 obtained from components containing (A) 30 mole % or less of an alkyl-substituted dicarboxylic acid and/or an alkyl-substituted diol in the acid or alcohol component, (B) 40 mole % or less of a trivalent or more polycarboxylic acid and/or a trivalent or more polyol in the acid or alcohol component, (C) 60 mole % or more of a dicarboxylic acid of phthalic acid type in the dicarboxylic acid component, and (D) an etherated diphenol, and 0.2 to 4 % by weight of an organometallic compound containing a divalent or more metal based on said binder resin.
A dry system toner powder for hot roller fixing, which is a toner using a polyester crosslinked with a polyvalent metal compound as the main binder resin, said toner having the melt-flow characteristics as measured by the flow-tester of a flowing point of 100.degree. to 130.degree. C. and a melt-flow viscosity of 10.sup.4 to 10.sup.6 poise at 110.degree. C.
Dependencies are inferred from the claim text.