Electrophotographic wet-type image fixing unit for use with copy

Photocopying – Contact printing – Light boxes

Patent

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Details

355256, 355284, G03G 1520

Patent

active

050992899

ABSTRACT:
An image fixing unit for use in a wet-type electrophotographic copying machine capable of forming a latent electrostatic image on a photoconductor element, developing said latent electrostatic image to a visible toner image and transferring said visible toner image to a transfer sheet, including (a) a first image-fixing section for heating directly an unfixed toner image formed on a transfer sheet by a developer which includes a toner and a carrier liquid, thereby fixing the toner image to the transfer sheet, the transfer sheet having a carrier liquid absorbing capacity A or B with respect to the carrier liquid, where A>B; (b) a second image-fixing heating section for minimizing the content of the carrier liquid in the developer by which the toner image is formed, thereby fixing the toner image to the transfer sheet by application of heat thereto; and (c) a switching device for selectively making operable at least one of the first image-fixing heating section or the second image-fixing heating section, depending upon the carrier liquid absorbing capacity of the transfer sheet.

REFERENCES:
patent: 4791447 (1988-12-01), Jacobs

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