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:
Jul. 18, 1978
Filed:
Feb. 15, 1977
Nobuo Mochizuki, Matsudo, JP;
Hiromi Demizu, Yokohama, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
An apparatus for developing an electrostatic image on a photosensitive member or on a record member using one-component developer is provided. The developer comprises a magnetic toner or non-magnetic toner having a volumetric resistivity of not less than 10.sup.6 .OMEGA.cm. The apparatus comprises a developing roller at least the surface portion of which is formed of elastic rubber, means for supplying toner to the surface of the developing roller, and means for charging the toner on the developing roller to a given polarity. The developing roller is driven for rotation at a peripheral speed which is equal to or greater than the speed of movement of the image carrying member. Additionally, the apparatus includes levelling means for levelling the toner on the developing roller, charge neutralizing means for eliminating the electric charge from the toner after the developing step, and scraper means for stirring the toner after the developing step. Various modifications and limitations of the means and members mentioned are possible.