Encapsulated toner

Abstract

Abstract PURPOSE:To enhance electrostatic charge controllability by incorporating a copolymer of one of specified N-vinyl compds. and their quaternary ammonium salts, and another vinyl monomer in outer shells coating a core substance, such as PE. CONSTITUTION:Outer shells coating the particles of a core substance, such as PE, contains a copolymer of one of N-vinyl compds. of the formula shown here and their quaternary ammonium salts, and aother vinyl monomer, preferably in 1/9-9/5 monomer ratio. As said N-vinyl compds., N-vinyldimethylamine or N- vinyldiethylamine, etc. are used, and as said vinyl monomer, styrenes are used. When an image using a toner of such a compsn. is transferred, superior fixability is attained with low pressure, and since triboelectrification amt. and image quality change are small, good durability and stable charge controllability can be obtained. In the formula, R1, R2 are each H or 1-10C alkyl, and R3, R4 are each 1-20C alkyl or aryl.

Inventors

• 👤 Toshiaki Nakahara
• 👤 中原　俊章
• 👤 Ichiro Osaki
• 👤 大崎　一郎
• 👤 Naoyuki Ushiyama
• 👤 牛山　尚之

Bibliographic Details