Replenishing an ink transfer sheet

Details Replenishing an ink transfer sheet Replenishing an ink transfer sheet

1990-08-28

1992-07-21

Burr, Edgar S.

Typewriting machines

Including interposed inking device for record-medium

Renovation of used ribbon

400198, 4002024, 400197, 427 141, 427 25, 427141, B41J 2716

Patent

active

051317680

ABSTRACT:
A method and apparatus for replenishing depleted portions of an ink layer of an ink sheet formed with a conductive ink layer disposed on an insulating layer from which ink has been transferred, without unintentionally supplying ink to undepleted portions of the ink layer are provided. Electrically conductive replacement ink is charged and supplied onto an intermediate transfer roller having a dielectric layer disposed on an electrically conductive layer. Charge is supplied to the insulating layer side of the ink sheet and replacement ink on the intermediate roller contacting the ink sheet at depleted regions of the ink sheet is transferred from the intermediate roller to the depleted portions by electrostatic attraction and not to undepleted portions. The method and apparatus are adaptable for multi-color ink sheets and can be employed in connection with a printer or image forming device.

REFERENCES:
patent: 4220699 (1980-09-01), Ishida
patent: 4253775 (1981-01-01), Crooks
patent: 4296176 (1981-10-01), Lennon
patent: 4419024 (1983-12-01), Bowlds
patent: 4421429 (1983-12-01), Graham
patent: 4467332 (1984-08-01), Akutsu
patent: 4606990 (1986-08-01), Yoshikama
patent: 4847110 (1989-07-01), Nakajima
patent: 4877341 (1989-10-01), Cherbuy
patent: 4882593 (1989-11-01), Touma
patent: 4976986 (1990-12-01), Akutsu

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