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JP2012237875A Active / In Force JP ⏱️ 4.5 years remaining

Image forming apparatus

Assignee: Ricoh Co Ltd
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Filing: 2011-05-12
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Granted: —
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Expires: 2031-05-12
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Abstract

Abstract Translated from Japanese 【課題】高品質の画像を安定して形成することができる画像形成装置を提供する。 【解決手段】 プリンタ制御装置2090のCPU101は、所定のタイミング毎に、補正情報取得処理を行い、該補正情報取得処理において、ステーション毎に、第1濃度変動測定用パターンを照明したときの光学センサの出力信号とドラムホームポジションセンサの出力信号とに基づいて、制御用現像バイアス信号を求め、第2濃度変動測定用パターンを照明したときの光学センサの出力信号とドラムホームポジションセンサの出力信号とに基づいて、制御用光量補正パターンを求める。そして、CPU101は、画像形成が行われる際に、ステーション毎に、制御用現像バイアス信号に基づいて現像バイアスを制御し、制御用光量補正パターンに基づいて光源の発光パワーを制御する。 【選択図】図5 An image forming apparatus capable of stably forming a high-quality image is provided. A CPU 101 of a printer control apparatus 2090 performs correction information acquisition processing at every predetermined timing, and an optical sensor when a first density variation measurement pattern is illuminated for each station in the correction information acquisition processing. The development bias signal for control is obtained based on the output signal and the output signal of the drum home position sensor, and the output signal of the optical sensor and the output signal of the drum home position sensor when the second density fluctuation measurement pattern is illuminated are obtained. Based on the above, a control light amount correction pattern is obtained. Then, when image formation is performed, the CPU 101 controls the development bias based on the control development bias signal for each station, and controls the light emission power of the light source based on the control light amount correction pattern. [Selection] Figure 5

Inventors

  • 👤 Muneo Iwata
  • 👤 宗朗 岩田
  • 👤 Masaaki Ishida
  • 👤 雅章 石田
  • 👤 Kazuhiro Akatsu
  • 👤 和宏 赤津
  • 👤 Junji Omori
  • 👤 淳史 大森
  • 👤 Isato Fujita
  • 👤 勇人 藤田

Bibliographic Details

Application Number —
Jurisdiction JP
Data Source google_patents
Last Synchronized 2026-11-03 11:52
CPC Classifications
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References Cited (Backward Citations)

JPH05333685A Cited
JP2006011171A Cited
JP2006284670A Cited
JP2007163534A Cited
JP2009210697A Cited

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