Patent ID: 6346356
Filing Date: 2002-02-12
Classification: G03G

Abstract:
A toner comprising: toner particles containing at least a binder resin, a colorant, a wax component and an oxycarboxylic acid or its sodium, potassium, ammonium or aliphatic ammonium salt,wherein a weight of oxycarboxylic acid or its sodium, potassium ammonium or aliphatic ammonium salt extracted with methanol from 1 g of the toner is represented by A (mg) and a weight of oxycarboxylic acid or its sodium, potassium, ammonium or aliphatic ammonium salt extracted with an aqueous 0.1 mol/liter sodium hydroxide solution from 1 g of the toner is represented by B (mg), the toner satisfies: 1.05&lE;A/B&lE;3.00, â€ƒand 0.10&lE;B&lE;3.50 and said oxycarboxylic acid or said salt thereof is selected from the groups consisting of compounds represented by the following Formulas (1) and (2): wherein (A) is selected from the group consisting of the following formulas (I) to (IX); wherein R1 represents a hydrogen atom, or at least one substituent selected from the group consisting of an alkyl group having 1 to 18 carbon atoms, an alkenyl group having 2 to 18 carbon atoms, an aralkyl group, an alkoxyl group, a halogen atom, a nitro group, a cyano group, an amino group, a carboxyl group and a hydroxyl group; wherein R2 represents a hydrogen atom, or at least one substituent selected from the group consisting of an alkyl group having 1 to 18 carbon atoms, an alkoxyl group having 1 to 18 carbon atoms, a halogen atom and a nitro group; wherein R3 represents a hydrogen atom, an alkyl group having 1 to 22 carbon atoms or an alkenyl group having 2 to 22 carbon atoms; and X1 represents a hydrogen atom, a sodium atom, a potassium atom, an ammonium group or an aliphatic ammonium group, wherein X2 represents a hydrogen atom, a sodium atom, a potassium atom, an ammonium group or an aliphatic ammonium group; R4 represents an alkyl group having 1 to 22 carbon atoms, an alkenyl group having 2 to 22 carbon atoms or an aryl group; and R5 represents a hydrogen atom, an alkyl group having 1 to 22 carbon atoms, an alkenyl group having 2 to 22 carbon atoms, an aryl group or an alkoxyl group.