Browse Prior Art Database

SCREENED TRANSFER ROLL Disclosure Number: IPCOM000023137D
Original Publication Date: 1976-Oct-31
Included in the Prior Art Database: 2004-Mar-27

Publishing Venue

Xerox Disclosure Journal


Transfer roll 10 is electrically biased to effect the trans~ fer of a toner powder image from photoconductive drum 12 to copy sheet 14. Hollow characteris, i,e~, toner powder images devoid of toner particles in the central region thereof, are frequently formed by compactation of toner leading to large adhesion forces at the center of line images and reduction of toner charged lending to a less sufficient transfer, This may be minimized by employing a transfer roll 10 having a plurality of dots or protruber~ ances 16 on the surface thereon. Dot 16 reduces the high compactation forces to reduce toner particle deletion and minimize hollow characters, In lieu of dots, a plurality of spaced raised rigids may be formed on transfer roll 10,