Pre-pretransfer treatment to increase transfer latitude in tri-l

Details Pre-pretransfer treatment to increase transfer latitude in tri-l Pre-pretransfer treatment to increase transfer latitude in tri-l

1994-01-10

1994-09-27

Moses, R. L.

Photocopying

Contact printing

Light boxes

430126, G03G 1516

Patent

active

053511131

ABSTRACT:
Pre pretransfer treatment for multiple toner toner images increases the operating latitude for pretransfer/transfer. In one embodiment of the invention, a pre pretransfer corona device is used to drive the tribos of two multiple toner images toward each other prior to pretransfer. A single constant current corona discharge device is used in this embodiment. Subsequent pretransfer treatment serves to reduce the delta tribo between the two images thereby providing an operating latitude of 3 micro coul/g.

REFERENCES:
patent: 3444369 (1969-05-01), Malinaric
patent: 3784300 (1974-01-01), Hudson et al.
patent: 4078929 (1978-03-01), Gundlach
patent: 4205322 (1980-05-01), Tsuzuki et al.
patent: 4506971 (1985-03-01), Buell et al.
patent: 5038177 (1991-08-01), Parker et al.
patent: 5119140 (1992-06-01), Berkes et al.
patent: 5241358 (1993-08-01), Germain
patent: 5260752 (1993-11-01), Fuma et al.

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