Developing apparatus

Details Developing apparatus Developing apparatus

1984-08-31

1987-06-23

Pianalto, Bernard D.

Coating apparatus

Intercontrol or safety interlock

118651, 118653, B05C 1100

Patent

active

046744410

ABSTRACT:
A developing apparatus is provided with a developing roll for carrying a toner thereon and an elastic blade pressed against the surface of the developing roll to apply the toner thereto. The toner is thus applied to the surface of the developing roll by the elastic blade to form a thin layer of the toner on the surface of the developing roll. The thin layer is opposed to a photosensitive drum at a predetermined space to deposit the toner on an electrostatic latent image in the photosensitive drum. A pressing force changing mechanism is provided for selectively pressing the elastic blade with one of a first and second pressing force. The first pressing force is set to be enough to form the thin layer of the toner on the surface of the developing roll and the second pressing force is set lower than the first pressing force.

REFERENCES:
patent: 3232190 (1966-02-01), Willmott et al.
patent: 3866574 (1975-02-01), Hardennrook et al.
patent: 4232628 (1980-11-01), Shelffo

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