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:
Dec. 16, 1980
Filed:
Mar. 01, 1979
Minolta Camera Kabushiki Kaisha, Osaka, JP;
Abstract
An electrophotographic copying method is carried out by the use of a developing material consisting of a magnetic toner of a volume resistivity within the range of 10.sup.10 to 10.sup.14 .OMEGA..multidot.cm and a non-magnetic and electrically insulating toner. During the development of an electrostatic latent image on a photoconductive support member into a toner image by means of a magnetic brush developing process, particles of both of the magnetic and non-magnetic toners are caused to deposit on an image area of the electrostatic latent image and particles of only the magnetic toner are caused to deposit on a non-image area of the electrostatic latent image. The toner image so developed is subsequently transferred from the photoconductive support member to a sheet of final support material and then fixed.