JP2006106136A5 - - Google Patents

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JP2006106136A5
JP2006106136A5 JP2004289329A JP2004289329A JP2006106136A5 JP 2006106136 A5 JP2006106136 A5 JP 2006106136A5 JP 2004289329 A JP2004289329 A JP 2004289329A JP 2004289329 A JP2004289329 A JP 2004289329A JP 2006106136 A5 JP2006106136 A5 JP 2006106136A5
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Japan
Prior art keywords
developer
control means
toner
density
toner replenishment
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JP2004289329A
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Japanese (ja)
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JP4617129B2 (en
JP2006106136A (en
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Priority to JP2004289329A priority Critical patent/JP4617129B2/en
Priority claimed from JP2004289329A external-priority patent/JP4617129B2/en
Publication of JP2006106136A publication Critical patent/JP2006106136A/en
Publication of JP2006106136A5 publication Critical patent/JP2006106136A5/ja
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Claims (6)

画像情報信号に基づいて静電潜像が形成される像担持体と、
トナーとキャリアとを含む現像剤を収容し、前記トナーにて前記静電潜像を現像する現像装置と、
前記現像装置にトナーを補給するトナー補給手段と、
前記現像装置内のトナーの濃度を検知する濃度検出手段と、
前記濃度検出手段からの検出信号の値と濃度制御の基準値とに基づいてトナー補給量を決定し、前記トナー補給手段を動作させる第一の現像剤濃度制御手段と、
前記画像情報信号の印字画素数の累計値に基づいてトナー補給量を決定し、前記トナー補給手段を動作させる第二の現像剤濃度制御手段と、
前記第一の現像剤濃度制御手段によって決定されるトナー補給量と前記第二の現像剤濃度制御手段によって決定されるトナー補給量とに基づいて、前記第一の現像剤濃度制御手段における濃度制御の基準値を変更するか否かを決定する決定手段と、
を有することを特徴とする画像形成装置。 An image carrier on which an electrostatic latent image is formed based on an image information signal;
A developing device containing a developer including toner and a carrier, and developing the electrostatic latent image with the toner;
Toner supply means for supplying toner to the developing device;
Density detecting means for detecting the density of toner in the developing device;
First developer concentration control means for determining a toner replenishment amount based on a value of a detection signal from the density detection means and a reference value for density control, and operating the toner replenishment means;
A second developer concentration control means for determining a toner replenishment amount based on a cumulative value of the number of print pixels of the image information signal and operating the toner replenishment means;
Based on the toner replenishment amount determined by the first developer concentration control means and the toner replenishment amount determined by the second developer concentration control means, the density control in the first developer concentration control means. Determining means for determining whether to change the reference value of
An image forming apparatus comprising: 前記決定手段は、前記第一の現像剤濃度制御手段によって決定されるトナー補給量と、前記第二の現像剤濃度制御手段によって決定されるトナー補給量と、を演算し、演算結果に基づいて、前記第一の現像剤濃度制御手段における濃度制御の基準値を変更するか否かを決定することを特徴とする請求項１に記載の画像形成装置。   The determining means calculates a toner replenishment amount determined by the first developer concentration control means and a toner replenishment amount determined by the second developer concentration control means, and based on the calculation result 2. The image forming apparatus according to claim 1, wherein whether or not to change a reference value for density control in the first developer density control means is determined. 画像情報信号に基づいて静電潜像が形成される像担持体と、
トナーとキャリアとを含む現像剤を収容し、前記トナーにて前記静電潜像を現像する現像装置と、
前記現像装置にトナーを補給するトナー補給手段と、
前記現像装置内のトナーの濃度を検知する濃度検出手段と、
前記濃度検出手段からの検出信号の値と濃度制御の基準値とに基づいてトナー補給量を決定し、前記トナー補給手段を動作させる第一の現像剤濃度制御手段と、
前記画像情報信号の印字画素数の累計値に基づいてトナー補給量を決定し、前記トナー補給手段を動作させる第二の現像剤濃度制御手段と、
前記第一の現像剤濃度制御手段によって決定されるトナー補給量と前記第二の現像剤濃度制御手段によって決定されるトナー補給量とに基づいて、前記第一の現像剤濃度制御手段による現像剤濃度制御から、前記第二の現像剤濃度制御手段による現像剤濃度制御に切り替える切替手段と、
を有することを特徴とする画像形成装置。 An image carrier on which an electrostatic latent image is formed based on an image information signal;
A developing device containing a developer including toner and a carrier, and developing the electrostatic latent image with the toner;
Toner supply means for supplying toner to the developing device;
Density detecting means for detecting the density of toner in the developing device;
First developer concentration control means for determining a toner replenishment amount based on a value of a detection signal from the density detection means and a reference value for density control, and operating the toner replenishment means;
A second developer concentration control means for determining a toner replenishment amount based on a cumulative value of the number of print pixels of the image information signal and operating the toner replenishment means;
Based on the toner replenishment amount determined by the first developer concentration control unit and the toner replenishment amount determined by the second developer concentration control unit, the developer by the first developer concentration control unit Switching means for switching from density control to developer density control by the second developer density control means;
An image forming apparatus comprising: 前記切替手段は、前記第一の現像剤濃度制御手段による現像剤濃度制御から前記第二の現像剤濃度制御手段による現像剤濃度制御に切り替える動作を行なった後、前記第一の現像剤濃度制御手段によって決定されたトナー補給量と、第二の現像剤濃度制御手段において決定されたトナー補給量とに基づいて、前記第二の現像剤濃度制御手段による現像剤濃度制御から前記第一の現像剤濃度制御手段による現像剤濃度制御に切り替えることを特徴とする請求項３に記載の画像形成装置。 Said switching means, after performing the operation of switching to the developer density control by said second developer density control means from the developer density control by said first developer density control means, said first developer density control Based on the toner replenishment amount determined by the means and the toner replenishment amount determined by the second developer concentration control means, the first development from the developer concentration control by the second developer concentration control means. The image forming apparatus according to claim 3, wherein the image forming apparatus is switched to developer concentration control by the agent concentration control means. 前記切替手段は、前記第一の現像剤濃度制御手段による現像剤濃度制御から前記第二の現像剤濃度制御手段による現像剤濃度制御に切り替える動作を行なった後、所定の枚数画像形成を行なった時点で、前記第一の現像剤濃度制御手段による現像剤濃度制御に切り替えることを特徴とする請求項３に記載の画像形成装置。 It said switching means, after performing the operation of switching to the developer density control by said second developer density control means from the developer density control by said first developer density control means, performs a predetermined number imaging 4. The image forming apparatus according to claim 3, wherein at the time, switching to developer density control by the first developer density control means is performed. 前記切替手段は、前記第一の現像剤濃度制御手段によって決定されるトナー補給量と、前記第二の現像剤濃度制御手段によって決定されるトナー補給量と、を演算し、演算結果に基づいて、前記第一の現像剤濃度制御手段による現像剤濃度制御から、前記第二の現像剤濃度制御手段による現像剤濃度制御に切り替えることを特徴とする請求項３、４又は５に記載の画像形成装置。   The switching means calculates a toner replenishment amount determined by the first developer concentration control means and a toner replenishment amount determined by the second developer concentration control means, and based on the calculation result 6. The image formation according to claim 3, wherein the developer density control by the first developer density control means is switched to the developer density control by the second developer density control means. apparatus.
JP2004289329A 2004-09-30 2004-09-30 Image forming apparatus Expired - Fee Related JP4617129B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2004289329A JP4617129B2 (en) 2004-09-30 2004-09-30 Image forming apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2004289329A JP4617129B2 (en) 2004-09-30 2004-09-30 Image forming apparatus

Publications (3)

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JP2006106136A JP2006106136A (en) 2006-04-20
JP2006106136A5 true JP2006106136A5 (en) 2007-11-15
JP4617129B2 JP4617129B2 (en) 2011-01-19

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Publication number Priority date Publication date Assignee Title
JP4904982B2 (en) * 2006-08-15 2012-03-28 富士ゼロックス株式会社 Developing device, image forming apparatus, and program.
JP5533811B2 (en) * 2011-07-25 2014-06-25 コニカミノルタ株式会社 Storage method and storage container
JP2014092618A (en) * 2012-11-01 2014-05-19 Ricoh Co Ltd Image forming apparatus and image forming method
JP7124597B2 (en) * 2018-09-25 2022-08-24 富士フイルムビジネスイノベーション株式会社 image forming device

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* Cited by examiner, † Cited by third party
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JP2002278182A (en) * 2001-03-22 2002-09-27 Ricoh Co Ltd Image forming device
JP4473468B2 (en) * 2001-05-11 2010-06-02 株式会社リコー Toner density control system, image forming apparatus
JP3791834B2 (en) * 2001-07-04 2006-06-28 京セラ株式会社 Control method in tandem type image forming apparatus
JP4174283B2 (en) * 2002-10-02 2008-10-29 キヤノン株式会社 Image forming apparatus and control method thereof

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