JP2014081608A5 - - Google Patents
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- JP2014081608A5 JP2014081608A5 JP2013095311A JP2013095311A JP2014081608A5 JP 2014081608 A5 JP2014081608 A5 JP 2014081608A5 JP 2013095311 A JP2013095311 A JP 2013095311A JP 2013095311 A JP2013095311 A JP 2013095311A JP 2014081608 A5 JP2014081608 A5 JP 2014081608A5
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- Prior art keywords
- image
- toner
- forming
- electric field
- nip
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- 239000000969 carrier Substances 0.000 claims 16
- 230000005684 electric field Effects 0.000 claims 16
- 238000000034 method Methods 0.000 claims 2
- 230000002093 peripheral Effects 0.000 claims 1
Claims (6)
前記転写電界として、トナーに対して像担持体側からニップ形成部材側に向かう静電気力を付与する電界と、トナーに対してニップ形成部材側から像担持体側に向かう静電気力を付与する電界とを交互に出現させる交番電界からなるものを形成するように前記転写電界形成手段を構成し、
且つ、前記像担持体の表面のうち、少なくとも、前記転写ニップに進入する前の領域であって、且つ前記トナー像を構成する有色トナーを付着させない領域、に対して透明トナー層を形成する透明トナー層形成手段を設けたことを特徴とする画像形成装置。 An image carrier, a toner image forming unit that forms a toner image made of colored toner on the surface of the image carrier, a nip forming member that forms a transfer nip in contact with the image carrier, and the image carrier. A transfer electric field forming means for forming a transfer electric field between the nip forming member and an image forming apparatus for transferring a toner image on the image carrier to a recording sheet sandwiched in the transfer nip;
As the transfer electric field, an electric field that applies an electrostatic force toward the toner from the image carrier side to the nip forming member side and an electric field that applies an electrostatic force toward the toner from the nip forming member side toward the image carrier side are alternated. The transfer electric field forming means is configured to form an alternating electric field that appears in
In addition, a transparent toner layer is formed on at least a region of the surface of the image carrier before entering the transfer nip and a region to which the colored toner constituting the toner image is not attached. An image forming apparatus comprising a toner layer forming unit.
ディーティ比の異なる非正弦波状の出力特性を有する交流バイアスと、直流バイアスとをそれぞれ前記転写ニップの近傍に導くことで前記転写ニップに前記交番電界を形成するように前記転写電界形成手段を構成したことを特徴とする画像形成装置。 The image forming apparatus according to claim 1.
The transfer electric field forming means is configured to form the alternating electric field in the transfer nip by introducing an AC bias having non-sinusoidal output characteristics with different duty ratios and a DC bias in the vicinity of the transfer nip. An image forming apparatus.
前記像担持体における有色トナー像を付着させない領域のうち、有色トナー像の周囲領域だけに前記透明トナー層を形成する処理を実施するように、前記透明トナー層形成手段を構成したことを特徴とする画像形成装置。 The image forming apparatus according to claim 1 or 2,
The transparent toner layer forming means is configured to perform the process of forming the transparent toner layer only on the peripheral area of the color toner image among the areas where the color toner image is not adhered on the image carrier. Image forming apparatus.
使用される記録シートの種類情報を取得する情報取得手段を設け、前記情報取得手段による取得結果に基づいて、前記透明トナー層を形成するか否か決定する処理を実施するように、前記透明トナー層形成手段を構成したことを特徴とする画像形成装置。 The image forming apparatus according to any one of claims 1 to 3,
Information obtaining means for obtaining information about the type of recording sheet used is provided, on the basis of the obtained result by the information acquiring means, to perform the process of determining whether to form the transparent toner layer, the transparent toner An image forming apparatus comprising layer forming means.
前記情報取得手段として、前記転写ニップに送り込まれる前の記録シートの表面凹凸性を検知する表面凹凸性検知手段を用いたことを特徴とする画像形成装置。 The image forming apparatus according to claim 4.
An image forming apparatus using surface irregularity detecting means for detecting the surface irregularity of the recording sheet before being fed into the transfer nip as the information acquisition means.
前記転写電界形成工程にて、前記転写電界として、トナーに対して像担持体側からニップ形成部材側に向かう静電気力を付与する電界と、トナーに対してニップ形成部材側から像担持体側に向かう静電気力を付与する電界とを交互に出現させる交番電界からなるものを形成し、
且つ、前記像担持体の表面のうち、少なくとも、前記転写ニップに進入する前の領域であって、且つ前記トナー像を構成する有色トナーを付着させない領域に対して透明トナー層を形成する透明トナー層形成工程を実施することを特徴とする画像形成方法。 A toner image forming step of forming a toner image made of colored toner on the surface of the image carrier, a nip forming step of forming a transfer nip by bringing a nip forming member into contact with the image carrier, the image carrier and the A recording sheet formed by performing a transfer electric field forming step for forming a transfer electric field between the nip forming member and a transfer step for transferring a toner image on the image carrier to a recording sheet sandwiched in the transfer nip. In an image forming method for forming an image on
In the transfer electric field forming step, as the transfer electric field, an electric field that applies an electrostatic force to the toner from the image carrier side to the nip forming member side, and an electrostatic force to the toner from the nip forming member side to the image carrier side. Form an alternating electric field that alternately appears with an electric field that imparts force,
Further, a transparent toner that forms a transparent toner layer on at least a region of the surface of the image carrier before entering the transfer nip and to which no colored toner constituting the toner image is attached. An image forming method comprising performing a layer forming step.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2013095311A JP6160908B2 (en) | 2012-09-28 | 2013-04-30 | Image forming apparatus and image forming method |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2012217586 | 2012-09-28 | ||
JP2012217586 | 2012-09-28 | ||
JP2013095311A JP6160908B2 (en) | 2012-09-28 | 2013-04-30 | Image forming apparatus and image forming method |
Publications (3)
Publication Number | Publication Date |
---|---|
JP2014081608A JP2014081608A (en) | 2014-05-08 |
JP2014081608A5 true JP2014081608A5 (en) | 2017-01-12 |
JP6160908B2 JP6160908B2 (en) | 2017-07-12 |
Family
ID=50785808
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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JP2013095311A Expired - Fee Related JP6160908B2 (en) | 2012-09-28 | 2013-04-30 | Image forming apparatus and image forming method |
Country Status (1)
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JP (1) | JP6160908B2 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10073386B2 (en) | 2016-04-14 | 2018-09-11 | Ricoh Company, Ltd. | Image forming apparatus |
JP6888249B2 (en) * | 2016-06-29 | 2021-06-16 | コニカミノルタ株式会社 | Image forming device, conductive member life determination method and conductive member life determination program |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
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JP4789534B2 (en) * | 2005-07-29 | 2011-10-12 | キヤノン株式会社 | Image forming apparatus |
JP2012027076A (en) * | 2010-07-20 | 2012-02-09 | Konica Minolta Business Technologies Inc | Image forming apparatus |
JP5659699B2 (en) * | 2010-11-01 | 2015-01-28 | 株式会社リコー | Image forming apparatus |
JP5811434B2 (en) * | 2010-12-10 | 2015-11-11 | 株式会社リコー | Potential difference condition determination method and image forming apparatus |
JP2012185481A (en) * | 2011-02-18 | 2012-09-27 | Ricoh Co Ltd | Image forming apparatus, image forming method, and image forming system |
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2013
- 2013-04-30 JP JP2013095311A patent/JP6160908B2/en not_active Expired - Fee Related
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