Browse Prior Art Database

AUTOMATIC DISPENSING CONTROL

IP.com Disclosure Number: IPCOM000024270D
Original Publication Date: 1980-Feb-29
Included in the Prior Art Database: 2004-Apr-02
Document File: 2 page(s) / 43K

Publishing Venue

Xerox Disclosure Journal

Abstract

In automatic copying machines it is desirable to monitor and control the density of the image areas of copies produced. When lower than desired image density exists, additional toner is dispensed to the developer.

This text was extracted from an ASCII text file.
This is the abbreviated version, containing approximately 100% of the total text.

AUTOMATIC DISPENSING CONTROL William Kurrasch

Proposed Classification U.S. CI. 355/3DD Int. CI. G03g 15/00

In automatic copying machines it is desirable to monitor and control the density of the image areas of copies produced. When lower than desired image density exists, additional         toner         is dispensed to the developer.

This         may be         automatically accomplished according to the device illustrated the figure wherein solenoid 1 is actuated when the density is low and additional toner is desired in the developer housing.

In         the         figure, the cam 4         is continuously         rotating when the         copying machine is running.         When the solenoid 1 is actuated, it pulls arm         2 up through spring 5, which, in turn, through spring 6 frees cam follower 3 so that it can swing against cam 4. Cam follower 3 moves back and forth pivoting about axis 8 where a one-way clutch (not shown) intermittently activates the developer dispenser. When the solenoid 1 is deactivated, the lower portion 7 of arm 2 forces the cam follower off the cam surface thereby inactivating the toner dispenser.