Developing device

Details Developing device Developing device

1988-09-01

1989-11-28

Moses, R. L.

Coating apparatus

With means to apply electrical and/or radiant energy to work...

With electromagnetic and/or electrostatic removal of...

118644, 355259, G03G 1508

Patent

active

048830178

ABSTRACT:
A developing device adjoins a rotatably arranged electrostatic latent image support member, and is internally provided with a rotatably disposed developing roller confronting the electrostatic latent image support member, a cylindrically formed flexible filmy member having a peripheral length being slightly longer than that of the developing roller and loosely mounted around it, a first member for biasing the filmy member against the developing roller to form the slack of the filmy member at a location confronting the electrostatic latent image support member, and a second member for forming a toner layer on an external surface of the filmy member. Wherein, the filmy member has dimensions and a physical property which are satisfied with following equations; 0.05.ltoreq.E.multidot.t.sup.3 .ltoreq.10, 2.5.ltoreq.R.ltoreq.50, wherein, E, t and R are, respectively, a modulus of longitudinal elasticity, a thickness and a radius of the filmy member.

REFERENCES:
patent: 3945723 (1976-03-01), Cook et al.
patent: 4564285 (1986-01-01), Yasuda et al.

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