Patent Number: 6,440,630

Title: Toner and image forming method

Abstract: A toner image forming method by developing an electrostatic latent image ona photoreceptor to form a toner image employing a developer comprisingtoner, transferring the toner image onto an image forming material, andfixing the transferred toner image employing a fixing unit, is disclosed.The fixing unit is comprised of a heating roller and a pressure rollerwhich is brought into contact with said heating roller, the heating rolleris constituted of a cylinder having an interior diameter of from 10 to 70mm and a wall thickness of from 0.1 to 2 mm comprised of a metal or ametal alloy, and a heating member being incorporated in the interior, asurface of the cylinder being covered with a fluorine resin at a thicknessof from 10 to 500 .mu.m, the pressure roller is constituted of a metalcylinder whose surface is covered with an elastic material having an Askerhardness C of less than 80 degrees at a thickness of 0.1 30 mm, and thetoner is comprised of a binder resin, a colorant, and a releasing agent,and is obtained by salting out/fusing resin particles comprising releasingagents in binding resins and colorant particles.

Inventors: Isobe; Kazuya (Hachioji, JP), Kobayashi; Yoshiaki (Hachioji, JP), Nishimori; Yoshiki (Hachioji, JP), Shirose; Meizo (Hachioji, JP), Yamazaki; Hiroshi (Hachioji, JP)


International Classification: G03G 13/00 (20060101); G03G 13/20 (20060101); G03G 9/08 (20060101); G03G 15/20 (20060101); G03G 013/20 ()

Expiration Date: 08/27/2014