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:
Mar. 13, 1979
Filed:
Aug. 17, 1977
Yujiro Ando, Yokohama, JP;
Shunichi Ishihara, Kodaira, JP;
Shuji Murakawa, Yokohama, JP;
Katsunobu Ohara, Kawasaki, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
In an electrophotographic method wherein a photosensitive screen having a multitude of tiny openings and formed by the use of a photoconductive member is used to form a primary electrostatic latent image thereon and a corona ion flow from a corona discharger is modulated by the primary electrostatic latent image to form a secondary electrostatic latent image on an electrically chargeable member, an acceleration field having a voltage Ve applied between the screen and the chargeable member is set to a range which satisfies the relation that (Ve-Vs)/d>500[V/mm], where d is the distance between the screen and the chargeable member, and Vs is the maximum potential of the secondary electrostatic latent image formed on the chargeable member.