Developing sleeve for electrophotography and process for image formation
AssigneeFuji Xerox Co., Ltd.
InventorsMasayuki Takei, Yuichi Yashiki, Hideyuki Akagi, Naoki Ohta, Yasushi Sakata, Junichi Tomonaga
Life of this patent
Estimating the term…
Abstract
A developing sleeve for electrophotography is disclosed which has a coating film comprising electroconductive and preferably lubricating particles dispersed in an acrylic resin in which the content of components having a molecular weight lower than 500 is not higher than 3% by weight. The developing sleeve is effective in preventing development ghosts while preventing toner dusting during transfer from becoming worse and has a small environmental dependence of developing properties.
Claims12
A developing sleeve for electrophotography comprising a sleeve substrate having provided thereon a coating film including particles dispersed in an acrylic resin containing beads of at least one of a melamine resin and a guanamine resin, wherein the acrylic resin comprises a component having a molecular weight of 500 or lower in an amount of 3.5% by weight or lower.
A process for image formation which comprises the steps of:
- forming an electrostatic latent image on an electrostatic-latent-image holder;
- developing the latent image with a developer on a developer holder to form a developed toner image;
- and
- transferring the developed toner image to a receiving material,
- wherein the developer holder is a developing sleeve comprising a sleeve substrate having provided thereon a coating film including particles dispersed in an acrylic resin containing beads of at least one of a melamine resin and a guanamine resin, wherein the acrylic resin comprises a component having a molecular weight of 500 or lower in an amount of 3.5% by weight or lower.
Dependencies are inferred from the claim text.