Method for controlling replenishment of toner for developing device

Abstract

Abstract PURPOSE:To optimally control the replenishment of toner by integrating on/off pulse signals which change corresponding to the change of toner concentration and starting or stopping the driving of a toner replenishing mechanism when the integrated value reaches a reference integrated value. CONSTITUTION:The toner replenished from a toner replenishing roller 7 is stirred and mixed and, at the same time, a detection output is outputted every rotation from a toner concentration sensor 10 side every time a stirring member 8 turns to a specified rotating position with the signal of an angle position detection sensor 21. After the ON pulse signal oscillated every time the toner concentration in a developer container 1 is equal to or under(above) the optimum reference value reaches a certain integrated value or a certain pulse width, a toner replenishing action is started and continued until the OFF pulse signal reaches a certain integrated value or a certain pulse width. Thus, the replenishment of the toner can be smoothly and optimally controlled.

Inventors

• 👤 Susumu Kikuchi
• 👤 進 菊地
• 👤 Tomomi Andou
• 👤 朋実 安東

Bibliographic Details