JP2019211768A5 - - Google Patents
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- JP2019211768A5 JP2019211768A5 JP2019095308A JP2019095308A JP2019211768A5 JP 2019211768 A5 JP2019211768 A5 JP 2019211768A5 JP 2019095308 A JP2019095308 A JP 2019095308A JP 2019095308 A JP2019095308 A JP 2019095308A JP 2019211768 A5 JP2019211768 A5 JP 2019211768A5
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- electrophotographic photosensitive
- toner
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- 239000002344 surface layer Substances 0.000 claims description 31
- 238000004140 cleaning Methods 0.000 claims description 15
- 238000000034 method Methods 0.000 claims description 14
- 229920001558 organosilicon polymer Polymers 0.000 claims description 12
- 239000011230 binding agent Substances 0.000 claims description 5
- 239000011159 matrix material Substances 0.000 claims description 5
- 239000011347 resin Substances 0.000 claims description 5
- 229920005989 resin Polymers 0.000 claims description 5
- 239000003086 colorant Substances 0.000 claims description 4
- 230000005489 elastic deformation Effects 0.000 claims description 3
- 125000004432 carbon atom Chemical group C* 0.000 claims 2
- 238000013518 transcription Methods 0.000 claims 2
- 230000035897 transcription Effects 0.000 claims 2
- 125000001183 hydrocarbyl group Chemical group 0.000 claims 1
- 125000004435 hydrogen atom Chemical group [H]* 0.000 claims 1
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 claims 1
- 238000005498 polishing Methods 0.000 description 6
- 239000000463 material Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 238000007788 roughening Methods 0.000 description 2
- 238000010408 sweeping Methods 0.000 description 2
- 239000006061 abrasive grain Substances 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
Description
上記の目的は以下の本発明によって達成される。即ち、本発明の一態様に係るプロセスカートリッジおよび電子写真装置は、電子写真感光体と、
該電子写真感光体に当接し、該電子写真感光体を帯電する帯電手段と、トナーを収容し、かつ該電子写真感光体上に形成された静電潜像を該トナーにより現像してトナー画像を形成するための現像手段と、クリーニングブレードを有し、かつ該電子写真感光体に該クリーニングブレードを当接させて該電子写真感光体上の該トナーを除去するためのクリーニング手段と、を有するプロセスカートリッジであって、該トナーが、着色剤および結着樹脂を含有するトナー母体と、有機ケイ素重合体を含有する表層と、を有し、該トナー母体に対する該有機ケイ素重合体の固着率が、８５．０％以上９９．０％以下であり、該電子写真感光体が、支持体および表面層を有し、該電子写真感光体の表面層のユニバーサル硬さ値（ＨＵ）が、２１０Ｎ／ｍｍ
２ 以上２５０Ｎ／ｍｍ
２ 以下であり、該電子写真感光体の表面層の弾性変形率（Ｗｅ）が、３７％以上５２％以下である、ことを特徴とする。
また、本発明の一態様に係る電子写真装置は、記載のプロセスカートリッジと、露光手段と、転写手段と、を有する、ことを特徴とする。
また、本発明の一態様に係る電子写真装置は、電子写真感光体と、露光手段と、該電子写真感光体に当接し、該電子写真感光体を帯電する帯電手段と、トナーを収容し、かつ該電子写真感光体上に形成された静電潜像を該トナーにより現像してトナー画像を形成するための現像手段と、転写手段と、クリーニングブレードを有し、かつ該電子写真感光体に該クリーニングブレードを当接させて該電子写真感光体上の該トナーを除去するためのクリーニング手段と、を有する電子写真装置であって、該トナーが、着色剤および結着樹脂を含有するトナー母体と、有機ケイ素重合体を含有する表層と、を有し、該トナー母体に対する該有機ケイ素重合体の固着率が、８５．０％以上９９．０％以下であり、該電子写真感光体が、支持体および表面層を有し、該電子写真感光体の表面層のユニバーサル硬さ値（ＨＵ）が、２１０Ｎ／ｍｍ
２
以上２５０Ｎ／ｍｍ
２
以下であり、該電子写真感光体の表面層の弾性変形率（Ｗｅ）が、３７％以上５２％以下である、ことを特徴とする。
The above object is achieved by the following invention. That is, the process cartridge and the electrophotographic apparatus according to one aspect of the present invention include an electrophotographic photosensitive member.
A toner image obtained by developing an electrostatic latent image formed on the electrophotographic photosensitive member by using the toner, and accommodating a charging means for contacting the electrophotographic photosensitive member and charging the electrophotographic photosensitive member and toner. It has a developing means for forming the toner, and a cleaning means for bringing the cleaning blade into contact with the electrophotographic photosensitive member and removing the toner on the electrophotographic photosensitive member. In a process cartridge, the toner has a toner base containing a colorant and a binder resin and a surface layer containing an organic silicon polymer, and the adhesion rate of the organic silicon polymer to the toner base is high. , 85.0% or more and 99.0% or less, the electrophotographic photosensitive member has a support and a surface layer, and the universal hardness value (HU) of the surface layer of the electrophotographic photosensitive member is 210 N. It is characterized in that it is / mm 2 or more and 250 N / mm 2 or less, and the elastic deformation rate (We) of the surface layer of the electrophotographic photosensitive member is 37% or more and 52% or less.
Further, the electrophotographic apparatus according to one aspect of the present invention is characterized by having the above-mentioned process cartridge, an exposure means, and a transfer means.
Further, the electrophotographic apparatus according to one aspect of the present invention accommodates an electrophotographic photosensitive member, an exposure means, a charging means that comes into contact with the electrophotographic photosensitive member and charges the electrophotographic photosensitive member, and toner. The electrophotographic photosensitive member has a developing means for developing an electrostatic latent image formed on the electrophotographic photosensitive member with the toner to form a toner image, a transfer means, and a cleaning blade, and the electrophotographic photosensitive member has a cleaning blade. An electrophotographic apparatus having a cleaning means for abutting the cleaning blade to remove the toner on the electrophotographic photosensitive member, wherein the toner contains a colorant and a binder resin. And a surface layer containing an organic silicon polymer, and the adhesion rate of the organic silicon polymer to the toner matrix is 85.0% or more and 99.0% or less, and the electrophotographic photosensitive member is: It has a support and a surface layer, and the universal hardness value (HU) of the surface layer of the electrophotographic photosensitive member is 210 N / mm 2 or more and 250 N / mm 2 or less, and the elasticity of the surface layer of the electrophotographic photosensitive member is It is characterized in that the deformation rate (We) is 37% or more and 52% or less.
電子写真感光体の表面層のＲａが、０．０１０μｍ以上０．０４５μｍ以下であり、電子写真感光体の表面層のＳｍが、０．００５ｍｍ以上０．０６０ｍｍ以下の範囲内の形状を有することが好ましい。ここでＲａは周方向に掃引して測定した算術平均粗さ、Ｓｍは周方向に掃引して測定した平均間隔である。さらに、電子写真感光体の表面層のＲａは、０．０１０μｍ以上０．０３０μｍ以下、電子写真感光体の表面層のＳｍは、０．００５ｍｍ以上０．０６０ｍｍ以下の範囲内の形状を有することがより好ましい。表面層が上記範囲内の粗さを有することで、クリーニング特性を十分に確保した上で、クリーニングブレードと電子写真感光体の表面の接触面積を低減することが可能となる。そのため、微量の有機ケイ素重合体の脱離した部分が持続的に付着でき、低トルク化の観点でより高い効果を得ることができる。電子写真感光体の表面層の粗さは上記範囲を満たせば高い効果が得られるが、電子写真感光体の周面の母線方向が溝形状を有することがより好ましい。表面層の粗面化手段の一例として、研磨シートを用いた研磨が挙げられる。研磨シートとは、シート基材上に研磨砥粒が結着樹脂中に分散された層を設けてなるシート状の研磨部材のことである。研磨シートと表面層表面に押し当て、シートを送ることで表面層の粗面化を、溝形状を有するように施すことができる。詳しい粗面化方法については後述する。
The Ra of the surface layer of the electrophotographic photosensitive member is 0.010 μm or more and 0.045 μm or less , and the Sm of the surface layer of the electrophotographic photosensitive member has a shape within the range of 0.005 mm or more and 0.060 mm or less. preferable. Here, Ra is the arithmetic mean roughness measured by sweeping in the circumferential direction, and Sm is the average interval measured by sweeping in the circumferential direction. Further, Ra of the surface layer of the electrophotographic photosensitive member may have a shape within the range of 0.010 μm or more and 0.030 μm or less, and Sm of the surface layer of the electrophotographic photosensitive member may have a shape within the range of 0.005 mm or more and 0.060 mm or less. More preferred. When the surface layer has a roughness within the above range, it is possible to reduce the contact area between the cleaning blade and the surface of the electrophotographic photosensitive member while sufficiently ensuring the cleaning characteristics. Therefore, a trace amount of the desorbed portion of the organosilicon polymer can be continuously adhered, and a higher effect can be obtained from the viewpoint of reducing torque. If the roughness of the surface layer of the electrophotographic photosensitive member satisfies the above range, a high effect can be obtained, but it is more preferable that the peripheral surface of the electrophotographic photosensitive member has a groove shape in the generatrix direction. As an example of the means for roughening the surface layer, polishing using a polishing sheet can be mentioned. The polishing sheet is a sheet-shaped polishing member provided with a layer in which polishing abrasive grains are dispersed in a binder resin on a sheet base material. By pressing the polishing sheet against the surface of the surface layer and feeding the sheet, the surface layer can be roughened so as to have a groove shape. The detailed roughening method will be described later.
図１に、電子写真感光体を備えたプロセスカートリッジを有する電子写真装置の概略構成の一例を示す。
電子写真感光体１は円筒状の電子写真感光体であり、軸２を中心に矢印方向に所定の周速度で回転駆動される。電子写真感光体１の表面は、帯電手段３により、正または負の所定電位に帯電される。帯電された電子写真感光体１の表面には、露光手段（不図示）から露光光４が照射され、目的の画像情報に対応した静電潜像が形成される。電子写真感光体１の表面に形成された静電潜像は、現像手段５内に収容されたトナーで現像され、電子写真感光体１の表面にはトナー像が形成される。電子写真感光体１の表面に形成されたトナー像は、転写手段６により、転写材７に転写される。トナー像が転写された転写材７は、定着手段８へ搬送され、トナー像の定着処理を受け、電子写真装置の外へプリントアウトされる。電子写真装置は、転写後の電子写真感光体１の表面に残ったトナーなどの付着物を除去するための、クリーニング手段９を有していてもよい。電子写真装置は、電子写真感光体１の表面を、前露光手段（不図示）からの前露光光１０により除電処理する除電機構を有していてもよい。また、本発明の一態様に係るプロセスカートリッジ１１を電子写真装置本体に着脱するために、レールなどの案内手段１２を設けてもよい。
FIG. 1 shows an example of a schematic configuration of an electrophotographic apparatus having a process cartridge including an electrophotographic photosensitive member.
The electrophotographic photosensitive member 1 is a cylindrical electrophotographic photosensitive member, and is rotationally driven at a predetermined peripheral speed in the direction of an arrow about a shaft 2. The surface of the electrophotographic photosensitive member 1 is charged to a predetermined positive or negative potential by the charging means 3. The surface of the charged electrophotographic photosensitive member 1 is irradiated with exposure light 4 from an exposure means (not shown), and an electrostatic latent image corresponding to the target image information is formed. The electrostatic latent image formed on the surface of the electrophotographic photosensitive member 1 is developed with the toner contained in the developing means 5, and the toner image is formed on the surface of the electrophotographic photosensitive member 1. The toner image formed on the surface of the electrophotographic photosensitive member 1 is transferred to the transfer material 7 by the transfer means 6. The transfer material 7 to which the toner image is transferred is conveyed to the fixing means 8, undergoes the fixing process of the toner image, and is printed out of the electrophotographic apparatus. The electrophotographic apparatus may have a cleaning means 9 for removing deposits such as toner remaining on the surface of the electrophotographic photosensitive member 1 after transfer. The electrophotographic apparatus may have a static elimination mechanism for statically eliminating the surface of the electrophotographic photosensitive member 1 with the preexposure light 10 from the preexposure means (not shown). Further, in order to attach / detach the process cartridge 11 according to one aspect of the present invention to / from the main body of the electrophotographic apparatus, a guide means 12 such as a rail may be provided.
Claims (7)
該電子写真感光体に当接し、該電子写真感光体を帯電する帯電手段と、
トナーを収容し、かつ該電子写真感光体上に形成された静電潜像を該トナーにより現像してトナー画像を形成するための現像手段と、
クリーニングブレードを有し、かつ該電子写真感光体に該クリーニングブレードを当接させて該電子写真感光体上の該トナーを除去するためのクリーニング手段と、
を有するプロセスカートリッジであって、
該トナーが、
着色剤および結着樹脂を含有するトナー母体と、
有機ケイ素重合体を含有する表層と、
を有し、
該トナー母体に対する該有機ケイ素重合体の固着率が、８５．０％以上９９．０％以下であり、
該電子写真感光体が、支持体および表面層を有し、
該電子写真感光体の表面層のユニバーサル硬さ値（ＨＵ）が、２１０Ｎ／ｍｍ ２ 以上２５０Ｎ／ｍｍ ２ 以下であり、
該電子写真感光体の表面層の弾性変形率（Ｗｅ）が、３７％以上５２％以下である、
ことを特徴とするプロセスカートリッジ。 Electrophotographic photosensitive member and
A charging means that abuts on the electrophotographic photosensitive member and charges the electrophotographic photosensitive member,
A developing means for accommodating toner and developing an electrostatic latent image formed on the electrophotographic photosensitive member with the toner to form a toner image.
A cleaning means having a cleaning blade and for removing the toner on the electrophotographic photosensitive member by bringing the cleaning blade into contact with the electrophotographic photosensitive member.
Is a process cartridge with
The toner is
A toner matrix containing a colorant and a binder resin,
A surface layer containing an organosilicon polymer and
Have,
The adhesion rate of the organosilicon polymer to the toner matrix is 85.0% or more and 99.0% or less.
The electrophotographic photosensitive member has a support and a surface layer, and the electrophotographic photosensitive member has a support and a surface layer.
The universal hardness value (HU) of the surface layer of the electrophotographic photosensitive member is 210 N / mm 2 or more and 250 N / mm 2 or less.
The elastic deformation rate (We) of the surface layer of the electrophotographic photosensitive member is 37% or more and 52% or less .
A process cartridge that features that.
請求項１に記載のプロセスカートリッジ。 The surface layer of the electrophotographic photosensitive member has a structure represented by the following formula (A-1) and a structure represented by the following formula (A-2).
The process cartridge according to claim 1.
Ｒ １ －ＳｉＯ ３／２ 式（Ｂ）
（式（Ｂ）中、Ｒ １ は、炭素数１以上６以下の炭化水素基を示す。）
前記トナー中の前記有機ケイ素重合体の含有量が、０．５質量％以上５．０質量％以下であり、
前記有機ケイ素重合体が、前記表層で凸形状を形成し、
該凸形状の凸高さが、４０ｎｍ以上１００ｎｍ以下である、
請求項１または２に記載のプロセスカートリッジ。 The organosilicon polymer has a partial structure represented by the following formula (B) and has a partial structure.
R1 - SiO 3/2 type (B)
(In the formula (B), R 1 represents a hydrocarbon group having 1 or more carbon atoms and 6 or less carbon atoms.)
The content of the organosilicon polymer in the toner is 0.5% by mass or more and 5.0% by mass or less.
The organosilicon polymer forms a convex shape on the surface layer,
The convex height of the convex shape is 40 nm or more and 100 nm or less.
The process cartridge according to claim 1 or 2.
前記電子写真感光体の表面層のＳｍが、０．００５ｍｍ以上０．０６０ｍｍ以下である、
請求項１～３のいずれか１項に記載のプロセスカートリッジ。 The Ra of the surface layer of the electrophotographic photosensitive member is 0.010 μm or more and 0.045 μm or less .
The Sm of the surface layer of the electrophotographic photosensitive member is 0.005 mm or more and 0.060 mm or less .
The process cartridge according to any one of claims 1 to 3.
露光手段と、
転写手段と、
を有する、ことを特徴とする電子写真装置。 The process cartridge according to any one of claims 1 to 5.
Exposure means and
Transcription means and
An electrophotographic apparatus characterized by having.
露光手段と、 Exposure means and
該電子写真感光体に当接し、該電子写真感光体を帯電する帯電手段と、 A charging means that abuts on the electrophotographic photosensitive member and charges the electrophotographic photosensitive member,
トナーを収容し、かつ該電子写真感光体上に形成された静電潜像を該トナーにより現像してトナー画像を形成するための現像手段と、 A developing means for accommodating toner and developing an electrostatic latent image formed on the electrophotographic photosensitive member with the toner to form a toner image.
転写手段と、 Transcription means and
クリーニングブレードを有し、かつ該電子写真感光体に該クリーニングブレードを当接させて該電子写真感光体上の該トナーを除去するためのクリーニング手段と、 A cleaning means having a cleaning blade and for removing the toner on the electrophotographic photosensitive member by bringing the cleaning blade into contact with the electrophotographic photosensitive member.
を有する電子写真装置であって、An electrophotographic device that has
該トナーが、 The toner is
着色剤および結着樹脂を含有するトナー母体と、 A toner matrix containing a colorant and a binder resin,
有機ケイ素重合体を含有する表層と、 A surface layer containing an organosilicon polymer and
を有し、Have,
該トナー母体に対する該有機ケイ素重合体の固着率が、８５．０％以上９９．０％以下であり、 The adhesion rate of the organosilicon polymer to the toner matrix is 85.0% or more and 99.0% or less.
該電子写真感光体が、支持体および表面層を有し、 The electrophotographic photosensitive member has a support and a surface layer, and has a support and a surface layer.
該電子写真感光体の表面層のユニバーサル硬さ値（ＨＵ）が、２１０Ｎ／ｍｍ The universal hardness value (HU) of the surface layer of the electrophotographic photosensitive member is 210 N / mm. ２2 以上２５０Ｎ／ｍｍMore than 250 N / mm ２2 以下であり、Is below
該電子写真感光体の表面層の弾性変形率（Ｗｅ）が、３７％以上５２％以下である、 The elastic deformation rate (We) of the surface layer of the electrophotographic photosensitive member is 37% or more and 52% or less.
ことを特徴とする電子写真装置。An electrophotographic device characterized by that.
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| US16/423,381 US10747130B2 (en) | 2018-05-31 | 2019-05-28 | Process cartridge and electrophotographic apparatus |
| EP19177170.8A EP3575876B1 (en) | 2018-05-31 | 2019-05-29 | Process cartridge and electrophotographic apparatus |
| CN201910470009.1A CN110554583B (en) | 2018-05-31 | 2019-05-31 | Process cartridge and electrophotographic apparatus |
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| JP6849379B2 (en) | 2016-10-13 | 2021-03-24 | キヤノン株式会社 | Manufacturing method of toner particles |
| JP6627723B2 (en) | 2016-11-09 | 2020-01-08 | 京セラドキュメントソリューションズ株式会社 | Electrophotographic photosensitive member and image forming apparatus having the same |
| JP7094781B2 (en) | 2018-05-31 | 2022-07-04 | キヤノン株式会社 | Process cartridge |
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2019
- 2019-05-21 JP JP2019095308A patent/JP7261086B2/en active Active
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