Toner density control device

Abstract

Abstract PURPOSE:To simplify the operation, and also, to improve the control accuracy by storing a toner concentration value which has been detected by a detecting means, averaging and storing its stored value, and also, controlling the concentration of a developer by using its value as a reference level. CONSTITUTION:In a density setting mode, a toner concentration value which has been detected by a detecting means 30 is inputted to a control means 32 through an A/D converting means 31, and stored in a storage means 34. A control means 32 averages digital signals of a prescribed frequency portion, which have been stored in the means 34, by an averaging means, and stores its result in a nonvolatile memory means. By using its value as a reference level, the concentration of a toner is controlled through a toner replenishing means 35.

Inventors

• 👤 Masayoshi Watanuki
• 👤 綿貫　昌義
• 👤 Toshio Nakahara
• 👤 敏夫 中原
• 👤 Masakazu Nagayama
• 👤 長山　正教
• 👤 Hajime Koyama
• 👤 一 小山

Bibliographic Details