Developer compositions comprising two incompatible resins...

Details Developer compositions comprising two incompatible resins... Developer compositions comprising two incompatible resins...

G - Physics

03

G

96/229, 96/52

G03G 9/10 (2006.01) G03G 9/087 (2006.01)

Patent

CA 1183033

ABSTRACT OF THE DISCLOSURE A developer composition is disclosed which is characterized by containing two binding resinous materials (A) and (B). The material (A) is a resinous material having a polar functional group and a glass transition temperature below 0°C. The material (B) is a resinous material having a glass transition temperature higher than 40°C. The material (B) is incompatible with the material (A). Material (B) has a polar functional group capable of interacting with the polar functional group of material (A). The developer may also contain a fine magnetic powder in an amount of 20 to 80% by weight based on the total weight of the developer composition. The developer composition can be used to form clear images which remain clear even after repeated opera- tion within a copying device. Furthermore, the images formed are securely fixed and can not be wipped off or removed easily.

403032

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