Armstrong, Westerman & Hattori, LLP
Electrophotographic image formation process and apparatus
In a method for forming a color image by using a contact type nonmagnetic one-component developing device, a flat sheet-like blade made of a metal flexible member and having a distal end thereof chamfered is used inside the developing device in combination with a toner having a glass transition point of 55 to 70&deg; C. and a weight average particle diameter of 6.0 to 10.0 &mgr;m, and containing up to 20 number % of particles having particle diameters of 5 &mgr;m or below, as a developer. The developing device is simple in construction, can provide high image quality and can, moreover, provide a highly reliable image formation method.
Fujitsu Limited
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Takashi Yoshimichi Kazuhiko Hachiro Shin-ichi Masae Osamu Masakazu Hiroshi
Yamamoto Katagiri Hamazoe Tosaka Kuramoto Nakamura Uchinokura Kinoshita Yamashita