ELECTROPHOTOGRAPHIC DEVICE

摘要

PROBLEM TO BE SOLVED: To obtain agitation effect faithful to a toner supply amount and effect of complementing developing performance by reducing partial uniformity of printing without spoiling a printing speed. SOLUTION: At least one or more developing rolls having a development width of≥15 inches and at least two or more augers which carry a developer rotate by the same driving system, and a developer consisting of a toner and a carrier is used; and a means of detecting toner density is provided and at least two or more kinds of toner supply amounts in a unit time are provided so that the toner has fixed density. In an electrophotographic device like this, the rotating speed of the driving system is 20 to 40 % faster in toner replenishment for a more toner amount than that in a reference toner supply amount. COPYRIGHT: (C)2004,JPO