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:
Apr. 29, 1986
Filed:
Nov. 17, 1983
Yozo Matsuura, Machida, JP;
Richo Co., Ltd., Tokyo, JP;
Abstract
A collected toner conveying device of an electrostatic recording apparatus for receiving a toner remaining on a latent image carrier after a toner image is printed on a transfer-printing sheet and discharging the toner to outside. The collected toner conveying device includes a toner receiver of a semicircular cross section in its lower portion which extends in a direction perpendicular to the direction of travel of the latent image carrier for receiving the toner removed from the latent image carrier by a cleaning member, and a screw conveyor provided with spiral fins mounted on a shaft of the screw conveyor with no gap therebetween and located along the entire length of the screw conveyor to discharge the toner introduced into the toner receiver to outside. The screw conveyor has its velocity of rotation, the radius of the spiral fins and the pitch of the spiral fins set in such a manner that when the velocity at which the toner is collected to the toner receiver, the radius of the spiral fins, the number of revolutions of the screw conveyor and the pitch of the spiral fins are denoted by v (cm.sup.3 /minute), r (cm), N (RPM.) and P (cm) respectively, the following relation holds.