JP2014191079A5 - - Google Patents
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- JP2014191079A5 JP2014191079A5 JP2013064730A JP2013064730A JP2014191079A5 JP 2014191079 A5 JP2014191079 A5 JP 2014191079A5 JP 2013064730 A JP2013064730 A JP 2013064730A JP 2013064730 A JP2013064730 A JP 2013064730A JP 2014191079 A5 JP2014191079 A5 JP 2014191079A5
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- JP
- Japan
- Prior art keywords
- photosensitive member
- electrophotographic photosensitive
- charge transport
- member according
- transport layer
- Prior art date
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- 239000010410 layer Substances 0.000 claims description 15
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 10
- 239000000463 material Substances 0.000 claims description 4
- 239000011164 primary particle Substances 0.000 claims description 4
- 239000011230 binding agent Substances 0.000 claims description 2
- 230000005684 electric field Effects 0.000 claims description 2
- 150000003961 organosilicon compounds Chemical class 0.000 claims description 2
- 239000011347 resin Substances 0.000 claims description 2
- 229920005989 resin Polymers 0.000 claims description 2
- 239000002356 single layer Substances 0.000 claims description 2
- 239000000758 substrate Substances 0.000 claims description 2
- 239000002344 surface layer Substances 0.000 claims description 2
Description
本発明の目的は、下記構成の何れかを採ることによって達成される。
＜１＞導電性基体上に、少なくとも電荷発生層及び電荷輸送層をこの順に有する電子写真感光体において、該電荷輸送層が単層かつ最表面層であり、少なくとも電荷輸送物質、バインダー樹脂、及び平均一次粒子径が0.2〜1μmのシリカ粒子を含有し、該シリカ粒子が
該電荷輸送層全体の3〜30wt%であり、該電荷輸送層の正孔移動度が電界強度2.0×105V/cm、気温21℃において2.0×10-5cm2/V・s以上であることを特徴とする電子写真感光体。
＜２＞前記シリカ粒子の平均一次粒径が0.3〜0.9μmであることを特徴とする＜１＞に記
載の電子写真感光体。
＜３＞前記シリカ粒子が該電荷輸送層全体の5〜15wt%であることを特徴とする＜１＞または＜２＞に記載の電子写真感光体。
＜４＞該シリカ粒子が反応性有機珪素化合物で表面処理されていることを特徴とする＜１＞〜＜３＞のいずれか１つに記載の電子写真感光体。
＜５＞該電荷輸送層の膜厚が10μm以上であることを特徴とする＜１＞〜＜４＞のいずれ
か１つに記載の電子写真感光体。
＜６＞前記電荷輸送物質の電荷分極率αが、α＞１００(Å ３ )であり、双極子モーメントＰが、Ｐ＜１．６０（Ｄ）であることを特徴とする＜１＞〜＜５＞のいずれか１つに記載の電子写真感光体。
＜７＞請求項１〜６のいずれか１つに記載の電子写真感光体を用いた、画像形成装置。
＜８＞請求項１〜６のいずれか１つに記載の電子写真感光体を用いた、画像形成装置用のカートリッジ。
The object of the present invention is achieved by adopting one of the following configurations.
<1> In an electrophotographic photoreceptor having at least a charge generation layer and a charge transport layer in this order on a conductive substrate, the charge transport layer is a single layer and an outermost surface layer, and includes at least a charge transport material, a binder resin, and It contains silica particles having an average primary particle diameter of 0.2 to 1 μm, the silica particles are 3 to 30 wt% of the entire charge transport layer, and the hole mobility of the charge transport layer is an electric field strength of 2.0 × 10 5 V / An electrophotographic photosensitive member characterized by being 2.0 × 10 −5 cm 2 / V · s or more at a temperature of 21 ° C.
<2> The electrophotographic photosensitive member according to <1>, wherein the silica particles have an average primary particle size of 0.3 to 0.9 μm.
<3> The electrophotographic photosensitive member according to <1> or <2>, wherein the silica particles are 5 to 15 wt% of the entire charge transport layer.
<4> The electrophotographic photosensitive member according to any one of <1> to <3>, wherein the silica particles are surface-treated with a reactive organosilicon compound.
<5> The electrophotographic photosensitive member according to any one of <1> to <4>, wherein the charge transport layer has a thickness of 10 μm or more.
<6> The charge polarizability α of the charge transport material is α> 100 (Å 3 ), and the dipole moment P is P <1.60 (D). 5>. The electrophotographic photosensitive member according to any one of 5>.
<7> An image forming apparatus using the electrophotographic photosensitive member according to any one of claims 1 to 6.
<8> A cartridge for an image forming apparatus using the electrophotographic photosensitive member according to any one of claims 1 to 6.
Claims (8)
粒子が該電荷輸送層全体の3〜30wt%であり、該電荷輸送層の正孔移動度が電界強度2.0×105V/cm、気温21℃において2.0×10-5cm2/V・s以上であることを特徴とする電子写真感光
体。 An electrophotographic photosensitive member having at least a charge generation layer and a charge transport layer in this order on a conductive substrate, wherein the charge transport layer is a single layer and an outermost surface layer, wherein the charge transport layer is at least a charge transport material and a binder resin And silica particles having an average primary particle size of 0.2 to 1 μm, the silica particles being 3 to 30 wt% of the entire charge transport layer, and the hole mobility of the charge transport layer is an electric field strength of 2.0 × 10 5. An electrophotographic photosensitive member characterized by being 2.0 × 10 −5 cm 2 / V · s or more at V / cm and an air temperature of 21 ° C.
の電子写真感光体。 2. The electrophotographic photosensitive member according to claim 1, wherein the average primary particle size of the silica particles is 0.3 to 0.9 [mu] m.
に記載の電子写真感光体。 The electrophotographic photosensitive member according to claim 1, wherein the charge transport layer has a thickness of 10 μm or more.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2013064730A JP6107298B2 (en) | 2013-03-26 | 2013-03-26 | Electrophotographic photosensitive member, electrophotographic process cartridge, and image forming apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2013064730A JP6107298B2 (en) | 2013-03-26 | 2013-03-26 | Electrophotographic photosensitive member, electrophotographic process cartridge, and image forming apparatus |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| JP2014191079A JP2014191079A (en) | 2014-10-06 |
| JP2014191079A5 true JP2014191079A5 (en) | 2016-01-14 |
| JP6107298B2 JP6107298B2 (en) | 2017-04-05 |
Family
ID=51837399
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2013064730A Active JP6107298B2 (en) | 2013-03-26 | 2013-03-26 | Electrophotographic photosensitive member, electrophotographic process cartridge, and image forming apparatus |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP6107298B2 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2016138936A (en) * | 2015-01-26 | 2016-08-04 | 三菱化学株式会社 | Electrophotographic photoreceptor, electrophotographic process cartridge, and image forming apparatus |
| JP6471516B2 (en) * | 2015-01-29 | 2019-02-20 | 三菱ケミカル株式会社 | Coating liquid for producing electrophotographic photosensitive member, electrophotographic photosensitive member, and image forming apparatus |
| JP2016218212A (en) * | 2015-05-19 | 2016-12-22 | 三菱化学株式会社 | Electrophotographic photoreceptor, electrophotographic photoreceptor cartridge, and image forming apparatus |
| JP6540898B2 (en) * | 2016-06-30 | 2019-07-10 | 富士電機株式会社 | Electrophotographic photosensitive member and electrophotographic apparatus equipped with the same |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3844258B2 (en) * | 1995-01-25 | 2006-11-08 | コニカミノルタホールディングス株式会社 | Electrophotographic photosensitive member, electrophotographic apparatus and apparatus unit |
| JP2002169312A (en) * | 2000-11-30 | 2002-06-14 | Mitsubishi Chemicals Corp | Electrophotographic photoreceptor, coating liquid for, electric charge transferring layer and method for producing electrophotographic photoreceptor |
| JP2002182409A (en) * | 2000-12-19 | 2002-06-26 | Mitsubishi Chemicals Corp | Electrophotographic photoreceptor, coating liquid for electric charge transferring layer, and method for producing electrophotographic photoreceptor |
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2013
- 2013-03-26 JP JP2013064730A patent/JP6107298B2/en active Active