Electrophotographic toner

Details Electrophotographic toner Electrophotographic toner

G - Physics

03

G

96/51

G03G 9/087 (2006.01)

Patent

CA 2023480

Abstract of the Disclosure In an electrophotographic toner, by using as the binder resin a styrene/acrylic resin in which in the gel permeation chromatogram, a high molecular weight peak value appears in a molecular weight region higher than 1 x 105, a low molecular weight peak value appears in a molecular weight region of from 2 x 104 to 500, a minimum value appears halfways between the two peaks and the ratio (V/P) of the area of the valley to the peak area is lower than 0.3, the internal cohesive force of the binder resin for the toner can be prominently improved while maintaining the low-temperature fixing property and offset resistance at high levels, and pulverization of the toner and formation of the spent toner can be prevented during the developing operation and the durability of the toner can be improved.

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