Coating apparatus – With heat exchange – drying – or non-coating gas or vapor... – With solid heat exchange means contacting work
Patent
1974-12-20
1976-04-06
Stein, Mervin
Coating apparatus
With heat exchange, drying, or non-coating gas or vapor...
With solid heat exchange means contacting work
432 60, 427 22, G03G 1520
Patent
active
039482154
ABSTRACT:
A toner image formed on a support sheet by toner particles adhering to selected areas of the sheet is fused either by simply disposing the sheet in with a heating surface, or by additionally pressing the sheet. After the toner image particles are fused, the sheet is cooled while maintaining its image bearing side in contact with the surface previously used for heating, so that the toner particles solidify and the toner image is stiffened. The sheet is then separated from the surface with which it was previously in contact. In the course of heating, some toner particles of the image may temporarily adhere to the heating surface, but in the course of the cooling step, these toner particles develop a stronger adhesion to the remainder of the image and to the sheet. Thus, after the cooling step, no toner particles remain on the surface contacted by the sheet, and the so-called "offset phenomenon" does not occur.
REFERENCES:
patent: 3637976 (1972-01-01), Ohta et al.
patent: 3666247 (1972-05-01), Banks
patent: 3667742 (1972-06-01), Kamola
patent: 3716018 (1973-02-01), Ohta et al.
patent: 3811821 (1974-05-01), Ariyama et al.
patent: 3811828 (1974-05-01), Ohta et al.
Ricoh Co. Ltd.
Salser Douglas
Stein Mervin
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