Microencapsulated toner for fixing with heat roller

Abstract

Abstract PURPOSE:To improve the fixabilith of a capsulated toner at low temp. and shelf stability by using a resin having a specified glass transition point (Tg) as a resin for the core material, incorporating a colorant into the resin, and using epoxy resin or the like as a resin for the outer walls. CONSTITUTION:A resin having 10-80 deg.C Tg such as polyester resin, polyurethane resin or vinyl resin is used as a resin for a core material. Epoxy resin or the like is used as a hard resin for outer walls. A monomer of the core resin such as styrene or 2-ethylhexyl acrylate and a monomer of the wall resin such as an epoxy compound or diisocyanate are dispersed in a soln. and polymerized by interfacial polymn. or other method. At this time, a colorant is added and incorporated into the core material. Since the core resin having said specified Tg is coated with the wall resin, the resulting capsulated toner is fixed at low temp. and has superior shelf stability.

Inventors

• 👤 Kazumasa Watanabe
• 👤 一雅 渡邉
• 👤 Hiroshi Yamazaki
• 👤 弘 山崎
• 👤 Tatsuro Nagai
• 👤 永井　達郎
• 👤 Toshiaki Tezuka
• 👤 手塚　敏明

Bibliographic Details