JP2014137452A5 - - Google Patents
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- JP2014137452A5 JP2014137452A5 JP2013005533A JP2013005533A JP2014137452A5 JP 2014137452 A5 JP2014137452 A5 JP 2014137452A5 JP 2013005533 A JP2013005533 A JP 2013005533A JP 2013005533 A JP2013005533 A JP 2013005533A JP 2014137452 A5 JP2014137452 A5 JP 2014137452A5
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- Prior art keywords
- image
- carrier
- developing
- electrostatic charge
- electrostatic
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- 239000000969 carrier Substances 0.000 claims description 15
- 125000000217 alkyl group Chemical group 0.000 claims description 8
- 125000002887 hydroxy group Chemical group [H]O* 0.000 claims description 6
- 125000004435 hydrogen atoms Chemical group [H]* 0.000 claims description 4
- 239000006249 magnetic particle Substances 0.000 claims description 4
- 239000000654 additive Substances 0.000 claims description 2
- 230000000996 additive Effects 0.000 claims description 2
- 239000011248 coating agent Substances 0.000 claims description 2
- 238000000576 coating method Methods 0.000 claims description 2
- 238000000034 method Methods 0.000 claims description 2
- 239000011347 resin Substances 0.000 claims description 2
- 229920005989 resin Polymers 0.000 claims description 2
- 125000000999 tert-butyl group Chemical group [H]C([H])([H])C(*)(C([H])([H])[H])C([H])([H])[H] 0.000 claims description 2
Description
上記目的を達成するため、以下の発明が提供される。
請求項１の発明は、磁性粒子と、前記磁性粒子を被覆し、下記一般式（Ｃ）で表される構造を有する添加剤を含む被覆樹脂層と、を有する静電荷像現像用キャリア。
（式（Ｃ）中、Ｒ１〜Ｒ５のうちいずれか１つはＯＨ基で、他は各々独立して水素原子又はアルキル基であり、かつ、Ｒ６〜Ｒ１０のうちいずれか１つはＯＨ基で、他は各々独立して水素原子又はアルキル基である。）
請求項２の発明は、前記一般式（Ｃ）中、Ｒ１〜Ｒ１０のうちＯＨ基以外の少なくとも１つは前記アルキル基である請求項１に記載の静電荷像現像用キャリア。
請求項３の発明は、前記アルキル基がｔ−ブチル基である請求項１又は請求項２に記載の静電荷像現像用キャリア。
請求項４の発明は、トナーと、請求項１〜請求項３のいずれか一項に記載の静電荷像現像用キャリアと、を含む静電荷像現像剤。
請求項５の発明は、請求項４に記載の静電荷像現像剤を収容し、像保持体に形成された静電潜像を、前記静電荷像現像剤によりトナー像として現像する現像手段を備え、画像形成装置に脱着されるプロセスカートリッジ。
請求項６の発明は、像保持体と、前記像保持体を帯電する帯電手段と、帯電した前記像保持体に静電潜像を形成する静電潜像形成手段と、請求項４に記載の静電荷像現像剤を収容し、前記像保持体に形成された静電潜像を、前記静電荷像現像剤によりトナー像として現像する現像手段と、前記トナー像を被転写体に転写する転写手段と、を備える画像形成装置。
In order to achieve the above object, the following invention is provided.
The invention of claim 1 is a carrier for developing an electrostatic charge image comprising magnetic particles and a coating resin layer that covers the magnetic particles and contains an additive having a structure represented by the following general formula (C).
(In the formula (C), any one of R 1 to R 5 is an OH group, the other is each independently a hydrogen atom or an alkyl group, and any one of R 6 to R 10. Are OH groups, and the others are each independently a hydrogen atom or an alkyl group.)
According to a second aspect of the invention, in the general formula (C), at least one of R 1 to R 10 other than the OH group is the alkyl group. The carrier for developing an electrostatic charge image according to the first aspect.
According to a third aspect of the present invention, there is provided the electrostatic image developing carrier according to the first or second aspect, wherein the alkyl group is a t-butyl group.
Invention of Claim 4 is an electrostatic charge image developer containing a toner and the carrier for electrostatic image development as described in any one of Claims 1-3.
According to a fifth aspect of the present invention, there is provided developing means for accommodating the electrostatic charge image developer according to the fourth aspect and developing the electrostatic latent image formed on the image carrier as a toner image by the electrostatic charge image developer. A process cartridge provided and detachable from the image forming apparatus.
According to a sixth aspect of the present invention, there is provided the image holding member, a charging unit that charges the image holding member, an electrostatic latent image forming unit that forms an electrostatic latent image on the charged image holding member, and the charging unit. And developing means for developing the electrostatic latent image formed on the image carrier as a toner image with the electrostatic charge image developer, and transferring the toner image to the transfer target. An image forming apparatus comprising: a transfer unit;
Claims (6)
前記磁性粒子を被覆し、下記一般式（Ｃ）で表される構造を有する添加剤を含む被覆樹脂層と、
を有する静電荷像現像用キャリア。
（式（Ｃ）中、Ｒ１〜Ｒ５のうちいずれか１つはＯＨ基で、他は各々独立して水素原子又はアルキル基であり、かつ、Ｒ６〜Ｒ１０のうちいずれか１つはＯＨ基で、他は各々独立して水素原子又はアルキル基である。） Magnetic particles,
A coating resin layer that covers the magnetic particles and includes an additive having a structure represented by the following general formula (C);
A carrier for developing an electrostatic charge image .
(In the formula (C), any one of R 1 to R 5 is an OH group, the other is each independently a hydrogen atom or an alkyl group, and any one of R 6 to R 10. Are OH groups, and the others are each independently a hydrogen atom or an alkyl group.)
請求項１〜請求項３のいずれか一項に記載の静電荷像現像用キャリアと、
を含む静電荷像現像剤。 Toner and
The electrostatic charge image developing carrier according to any one of claims 1 to 3,
An electrostatic charge image developer.
画像形成装置に脱着されるプロセスカートリッジ。 A developing means for accommodating the electrostatic charge image developer according to claim 4 and developing the electrostatic latent image formed on the image carrier as a toner image with the electrostatic charge image developer,
A process cartridge that is detachable from the image forming apparatus.
前記像保持体を帯電する帯電手段と、
帯電した前記像保持体に静電潜像を形成する静電潜像形成手段と、
請求項４に記載の静電荷像現像剤を収容し、前記像保持体に形成された静電潜像を、前記静電荷像現像剤によりトナー像として現像する現像手段と、
前記トナー像を被転写体に転写する転写手段と、
を備える画像形成装置。 An image carrier,
Charging means for charging the image carrier;
Electrostatic latent image forming means for forming an electrostatic latent image on the charged image carrier;
Development means for containing the electrostatic charge image developer according to claim 4 and developing the electrostatic latent image formed on the image carrier as a toner image with the electrostatic charge image developer;
Transfer means for transferring the toner image to a transfer object;
An image forming apparatus comprising:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2013005533A JP5949570B2 (en) | 2013-01-16 | 2013-01-16 | Electrostatic image developing carrier, electrostatic image developer, process cartridge, and image forming apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2013005533A JP5949570B2 (en) | 2013-01-16 | 2013-01-16 | Electrostatic image developing carrier, electrostatic image developer, process cartridge, and image forming apparatus |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| JP2014137452A JP2014137452A (en) | 2014-07-28 |
| JP2014137452A5 true JP2014137452A5 (en) | 2015-07-09 |
| JP5949570B2 JP5949570B2 (en) | 2016-07-06 |
Family
ID=51414992
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2013005533A Expired - Fee Related JP5949570B2 (en) | 2013-01-16 | 2013-01-16 | Electrostatic image developing carrier, electrostatic image developer, process cartridge, and image forming apparatus |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP5949570B2 (en) |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS613149A (en) * | 1984-06-15 | 1986-01-09 | Nippon Kayaku Co Ltd | Toner for electrophotography |
| US5238768A (en) * | 1992-06-15 | 1993-08-24 | Xerox Corporation | Toner compositions with sulfone charge enhancing additives |
| JP3414433B2 (en) * | 1993-03-01 | 2003-06-09 | 日本化薬株式会社 | Electrophotographic toner |
| JPH07301958A (en) * | 1994-04-28 | 1995-11-14 | Canon Inc | Electrophotographic carrier, two-component developer using that carrier and production of that carrier |
| JPH08160674A (en) * | 1994-12-06 | 1996-06-21 | Konica Corp | Electrostatic latent image developer and electrostatic latent image carrier |
| JP2001117288A (en) * | 1999-10-20 | 2001-04-27 | Ricoh Co Ltd | Electrophotographic carrier and method of producing the same |
| JP2009300792A (en) * | 2008-06-13 | 2009-12-24 | Sharp Corp | Carrier, two-component developer containing the same, and developing device and image forming apparatus using two-component developer |
| JP2012212020A (en) * | 2011-03-31 | 2012-11-01 | Konica Minolta Business Technologies Inc | Method of manufacturing two-component developer, and two-component developer |
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2013
- 2013-01-16 JP JP2013005533A patent/JP5949570B2/en not_active Expired - Fee Related