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US 5,629,122 AGranted
Toner for developing electrostatic image and image forming method
AssigneeCanon Kabushiki Kaisha
InventorsHirohide Tanikawa, Shinji Doi, Masaki Uchiyama
Life of this patent
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Abstract
Disclosed is a toner for developing an electrostatic image. The toner comprises a binder resin and a wax, and the value of weight average molecular weight/number average molecular weight (Mw/Mn) of the wax is not more than 1.5.
Claims18
A heat-fixable toner for developing an electrostatic image comprising a binder resin and a wax, wherein said wax is a member selected from the group consisting of (i) a synthetic hydrocarbon synthesized from a synthetic gas comprised of carbon monoxide and hydrogen, and (ii) a synthetic hydrocarbon obtained by hydrogenation thereof;
- said wax having a number average molecular weight (Mn) from 300 to 1,500 and a molecular weight distribution value of weight average molecular weight/number average molecular weight (Mw/Mn) of not more than 1.45 as measured by gel permeation chromatography.
Dependencies are inferred from the claim text.