Radiation imagery chemistry: process – composition – or product th – Electric or magnetic imagery – e.g. – xerography,... – Post imaging process – finishing – or perfecting composition...
Patent
1997-03-21
1998-05-19
Duda, Kathleen
Radiation imagery chemistry: process, composition, or product th
Electric or magnetic imagery, e.g., xerography,...
Post imaging process, finishing, or perfecting composition...
430109, G03G 1314
Patent
active
057534004
ABSTRACT:
In a method for repeatedly using an image holding member such as a sheet of paper, toner for an electronic photograph is constructed such that a maximum value of viscoelasticity of the toner shown by tan .delta. is equal to or smaller than 3 in the range of a heating temperature when the toner is heated and fixed to the image holding member. Such toner has sufficient elastic or cohesive force. Accordingly, when the toner is heated and fixed to the paper sheet, no excessive adhesive force is caused to such an extent that paper fibers of the paper sheet eat into the toner attached to the paper sheet. Accordingly, after an aqueous solution including a surfactant is supplied to the paper sheet by a liquid supplying unit, the toner is softened by heat from heating rollers so that the toner is attached to a surface of an offset belt. When the toner attached to the surface of the offset belt is separated from the paper sheet, the toner can be completely removed from the paper sheet without damaging paper fibers on a surface of the paper sheet.
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Ando Kazuhiro
Asaba Youichi
Kimura Yoshiyuki
Kuramoto Shin-ichi
Miyashita Yoshiaki
Duda Kathleen
Ricoh & Company, Ltd.
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