Patent ID: 6447970
Filing Date: 2002-09-10
Classification: G03G

Abstract:
A toner containing at least a binder resin, a colorant, a wax, and an organic aluminum compound, wherein the toner has a contact angle to water of 105 to 130 degrees andi) said binder resin has an acid value of 1 to 40 mgKOH/g, ii) said binder resin contains 2 to 50% by weight of a tetrahydrofuran (THF)-insoluble matter based on the binder resin, iii) the tetrahydrofuran-soluble matter of said binder resin has the main peak in the molecular weight range of from 2,000 to 30,000 in a chromatogram by gel permeation chromatography (GPC), and iv) said organic aluminum compound is an aluminum complex compound and/or an aluminum complex salt having three coordinated molecules of a substituted or unsubstituted benzilic acid represented by the following chemical formula (1) â€ƒwherein R1 and R2, which may be identical or different, are each a substituent selected from the group consisting of linear or branched alkyl groups, alkenyl groups, alkoxy groups, halogen atoms, nitro groups, cyano groups, amino groups, carboxyl groups, and hydroxyl groups; and, m and n are each an integer of 0 to 5.