The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 01, 1996
Filed:
Apr. 11, 1995
Yasuhito Yuasa, Hirakata, JP;
Noriaki Hirota, Suita, JP;
Akinori Toyoda, Katano, JP;
Hideki Tatematsu, Ashiya, JP;
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Abstract
Magnetic toner used for electrophotographic development includes additives such as inorganic fine particles, having a particular particle diameter and specific surface area, and hydrophobic silica having a particular specific surface area and surface treatment, so that the magnetic toner can provide images of high quality without generating photoconductor filming. The magnetic toner is applied to the electrophotographic method including the developing step of forming electrostatic latent images on a photoconductor containing a stationary magnet, magnetically attracting the magnetic toner to the surface of the photoconductor in a toner sump, and collecting toner at a non-image section by an electrode roller; the transferring step of transferring the toner to transfer paper; the cleaning step of removing residual magnetic toner left on the photoconductor in the transferring step; and the recycling step of recycling the residual magnetic toner.