Coating processes – Measuring – testing – or indicating – Thickness or uniformity of thickness determined
Patent
1981-06-18
1984-01-10
Pianalto, Bernard D.
Coating processes
Measuring, testing, or indicating
Thickness or uniformity of thickness determined
118657, 118658, B05D 104
Patent
active
044253737
ABSTRACT:
A method and an apparatus for developing images, wherein a moving latent image holding member is opposed to a developer carrying member with a space gap between them at a developing section in an amount greater than the thickness of a developer layer coated on the surface of the developer carrying member, and an alternating electric field is applied across the latent image holding member and the developer carrying member to cause the developer to reciprocatingly move between the developer carrying member and an image portion as well as a non-image portion on the latent image holding member at least at the closest region to the latent image holding member and the developer carrying member, thereby causing the surface of the developer layer carried on the developer carrying member to move in substantially the same direction and at substantially the same speed as the latent image surface at the developing section.
REFERENCES:
patent: 4102305 (1978-07-01), Schwarz
Hosono Nagao
Kanbe Junichiro
Nakamura Shunji
Takahashi Tohru
Tamura Yasuyuki
Canon Kabushiki Kaisha
Pianalto Bernard D.
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