Browse Prior Art Database

AUTOMATIC DISPENSING CONTROL

IP.com Disclosure Number: IPCOM000024328D
Original Publication Date: 1980-Apr-30
Included in the Prior Art Database: 2004-Apr-02
Document File: 2 page(s) / 53K

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 and dispense additional toner to the developer when the image density falls below a selected level. The density of the images normally produced in a copy cycle may be obtained with the apparatus shown in the figure and from this measurement the dispensing of additional toner controlled. In the figure when solenoid 1 is activated, it pulls connecting linkage 2 rotating the connecting rod 3 counterclockwise and placing density patch 4 in the optical path of the copying machine thereby masking an area of the imaging surface so that it is developed. The patch 4 only masks a small area of the imaging surface adjacent to the normal copying area and the density of this developed out portion is measured. From this patch the density is electrically measured within the machine and the dispensing of additional toner to the developer is controlled.

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EROX DISCLOSURE JOURNAL

AUTOMATIC DISPENSING CONTROL Proposed William Kurrasch Classification

U.S. C1. 355/3DD

Int. C1. G03g 15/00

In automatic copying machines it is desirable to monitor and control the density of the image areas of copies produced and dispense additional toner to the developer when the image density falls below a selected level. The density of the images normally produced in a copy cycle may be obtained with the apparatus shown in the figure and from this measurement the dispensing of additional toner controlled. In the figure when solenoid 1 is activated, it pulls connecting linkage 2 rotating the connecting rod 3 counterclockwise and placing density patch 4 in the optical path of the copying machine thereby masking an area of the imaging surface so that it is developed. The patch 4 only masks a small area of the imaging surface adjacent to the normal copying area and the density of this developed out portion is measured. From this patch the density is electrically measured within the machine and the dispensing of additional toner to the developer is controlled.

Volume 5 Number 2 March/April 1980 199

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  XEROX DISCLOSURE JOURNAL Volume 5 Number 2 March/April 1980

[This page contains 1 picture or other non-text object]