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US 8,913,942 B2Granted
Formation process for glossy surface
AssigneeKonica Minolta, Inc.
InventorsGo Yamaguchi, Akihiro Honya, Sadaaki Sakamoto
Life of this patent
Estimating the term…
Abstract
A formation process of a glossy surface, without unevenness of gloss in a image on a print surface, nor toner offset or release failure over a long time period, is provided, where a surface of a belt member is composed of a resin containing structural units derived from a specific urethane (meth)acrylate (A), a specific polyfunctional monomer (B), and a fluorine-modified acrylate (C) and has the contact angle with respect to water of 85 to 110°, and the melting energy ΔH of a wax in a clear toner is 2 to 20 J/g.
Claims7
A formation process of a glossy surface comprising:
- a step for heating an image carrier to which a clear toner is supplied;
- a step for adhering closely the image carrier to a belt member by the intermediary of the clear toner molten in the above step;
- a step for cooling the image carrier in a state being closely adhered to the belt member;
- and
- a step for releasing the image carrier with the clear toner solidified by the cooling from the belt member;
- wherein a surface of the belt member is composed of a cured resin comprising;
- (a) a structural unit derived from a urethane (meth)acrylate (A) having 3 or more (meth)acryloyloxy groups in a molecule;
- (b) a structural unit derived from a polyfunctional monomer (B) having 3 or more (meth)acryloyloxy groups in a molecule but no urethane bond;
- and
- (c) a structural unit derived from a fluorine-modified acrylate(C);
- and
- wherein the contact angle of the surface of the belt member with respect to pure water is 85 to 110°;
- the clear toner comprises a toner particle comprising a binder resin and a wax;
- and
- the melting energy ΔH determined from a melting peak area obtained from an endothermic peak of the wax obtained by a DSC measurement of the clear toner is 2 to 20 J/g.
12 more elements
Dependencies are inferred from the claim text.