SCAVENGELESS DEVELOPMENT WITH ELECTRICALLY REGENERATED DONOR BELT
Original Publication Date: 1995-Aug-31
Included in the Prior Art Database: 2004-Apr-07
Xerox Disclosure Journal
Well known in the development of electrostatic latent images in xerographic printers are the use of scavengeless development processes, for example, those described in US-A-4,868,600 to Hays et al., issued Sep. 19, 1989, US-A- 5,010,367 to Hays, issued Apr. 23, 1991, US-A-5,128,723 to Bolte et al, issued Jul. 7, 1992, US-A-5,144,371 to Hays, issued Sep. 1, 1992. Generally, AC biased wires or electrodes positioned over the toner covered donor element causes the charged toner particles to "jump" therefrom, forming a powder cloud in the development zone. In scavengeless type development systems employing a donor belt and AC biased electrodes located behind the belt, for instance, those described by Schmidlin in US-A-5,276,466, issued Jan. 4,1994, there exists a problem of residual charge remaining on the conductive donor belt following development. To correct this problem, it is proposed that an insulating belt be employed with a conductive roll maintained at ground potential to contact the insulating donor belt as the last step of the development process in order to deplete any residual charge thereon.