Browse Prior Art Database

Reverse Development Two-Cycle Process for Printer

IP.com Disclosure Number: IPCOM000058681D
Original Publication Date: 1988-Dec-01
Included in the Prior Art Database: 2005-Feb-15

Publishing Venue

IBM

Related People

Authors:
Rohrer, CE [+details]

Abstract

This article describes a machine configuration for an electrophotographic (EP) printer which combines the reverse development process with the two-cycle process so that there is no need to switch coronas on and off as is necessary in the two-cycle copier process. Additionally, there is no need for a back-charge corona or any other device to neutralize the effect of the charge corona on the residual toner. Fig. 1 shows a first machine configuration of the invention. Charge corona 100 lays down a negative charge in the first cycle (development cycle) of the dual-cycle process onto photoconductor (PC) 101. PC 101 rotates in direction A and is exposed at exposure station 102 discharging the PC in those areas which are desired to develop.