Browse Prior Art Database

Original Publication Date: 1982-Aug-31
Included in the Prior Art Database: 2004-Apr-04

Publishing Venue

Xerox Disclosure Journal


In the development of an electrophotographic printing machine, it is frequently, highly desirable to crossmix the two component develcper material. One type of crossmixer employed is a chevron crossmixer. Chevron crossmixers, however, are subject to developer pumping if not perfectly level. If the right end of the baffle supporting the crossmixer is higher than the other end thereof, the cross sectional area presented to the developer material flowing therethrough by the right pointing vanes is increased. This increases the flow of the developer material to the right. Simultaneously, the angle of inclination of the right pointing baf fae is decreased, thereby offering greater impedance to the developer material flowing to the right. The actual amount of impedance to the developer material flow is affected by the angle of the chevron and the baffle upon which the chevrons are mounted. In order to overcome this problem, the chevrons may be replaced with circular obstructions which present the same cross sections and angles to the developer material flowing therethrough even when the support baffle is tilted. A crossmixer comprising a plurality of round obstructions to developer flow does not produce pumping.