Stock material or miscellaneous articles – Structurally defined web or sheet – Discontinuous or differential coating – impregnation or bond
Reexamination Certificate
2002-06-21
2004-11-16
Shewareged, B. (Department: 1774)
Stock material or miscellaneous articles
Structurally defined web or sheet
Discontinuous or differential coating, impregnation or bond
C428S195100, C428S338000, C427S121000, C430S124300
Reexamination Certificate
active
06818283
ABSTRACT:
BACKGROUND OF THE INVENTION
The present invention relates to an image-receiving sheet for electrophotography. In particular, the present invention relates to a high-quality image-receiving sheet for electrophotography, which is particularly used for machines for an electrophotographic process such as copying machines, printers and facsimiles, for example, color copying machines, to provide photo-images having high quality and gloss.
The offset printing technique is mainly employed in general commercial printing and high-quality printing methods. For the offset printing, coated papers such as art papers are used, because these papers have a very smooth surface and accordingly have merits such as an excellent ink transition, a high image reproducibility, a high image gloss and a good color reproducibility.
However, the coating layer of the coated paper containing a large amount of a pigment has a high hygroscopicity. Therefore, when the coated paper per se is used as the image-receiving sheet for electrophotography, water vapor in the coated paper expands when the image is fixed by heating and, as a result, blisters (expansions in the coated layer) are formed to cause rough or coarse image and to make the formation of a fine image like a photograph impossible. Another problem of the ordinary coated papers is that when an image information such as a face or scenery is to be output as a photograph, the gloss is not enough. Under these circumstances, the coated papers have rarely been used as the image-receiving sheets for electrophotography.
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Murai Ashita
Nakamura Yoshisada
Fuji Photo Film Co. , Ltd.
Shewareged B.
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