Image forming apparatus for simultaneous transfer and fixing of

Details Image forming apparatus for simultaneous transfer and fixing of Image forming apparatus for simultaneous transfer and fixing of

1998-01-09

1999-03-30

Lee, S.

Electrophotography

Image formation

Transfer

G03G 1516, G03G 1520

Patent

active

058900446

ABSTRACT:
An image forming apparatus such as a printer and a copying machine, employs a simultaneous transfer and fixing method to obtain a highly lustrous image of high image quality, free of uneven lusterand disordered pixels over the entire density area. Assuming the outside diameter of the convex side roll to be R (mm), the hardness of hardness test of durometer type A and the thickness of the surface layer of the concave side roll to be HR (degree) and dR (mm) respectively, the hardness of hardness test of durometer type A and the thickness of the surface layer of the toner image carrier in contact with the recording medium to be Hb (degree) and db (.mu.m) respectively, and the nip width to be N (mm), the material and thickness of each surface layer for these two rolls and the intermediate transfer belt are selected so as to satisfy the following relationship:

REFERENCES:
patent: 2990278 (1961-06-01), Carlson
patent: 5629761 (1997-05-01), Theodoulou et al.

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