JP2003140445A5 - - Google Patents
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- Publication number
- JP2003140445A5 JP2003140445A5 JP2001339336A JP2001339336A JP2003140445A5 JP 2003140445 A5 JP2003140445 A5 JP 2003140445A5 JP 2001339336 A JP2001339336 A JP 2001339336A JP 2001339336 A JP2001339336 A JP 2001339336A JP 2003140445 A5 JP2003140445 A5 JP 2003140445A5
- Authority
- JP
- Japan
- Prior art keywords
- discharge
- charging member
- charged
- charging
- contact
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Description
微少空隙での放電を利用している接触式帯電装置では、帯電部材が被帯電体面に接触するため、帯電部材の接触面付近での放電の影響が被帯電体に強く作用し、被帯電体の表面を劣化させ削れやすく、特に被帯電体に有機感光体を用いた場合に劣化が顕著に現れ、表層の樹脂が放電の影響によって低分子量下し、表層が削れやすくなってしまう。これらの影響は帯電部材の両端部に発生しやすい。これは接触帯電の場合、放電は有機感光体との接触部分からの僅かに離れた部分で発生するものであるから、帯電部材の両端部以外は、放電部分が帯電部材と感光体とのニップを挟んだ微小空間だけであるが、端部に関しては、それに加えて帯電部材の端部からの放電も加わりドラム周方向から見た場合、放電面積はドラム周方向に対し端部以外の場所に比較して広くなるので、放電時間が他の部分より長くなり有機感光体の劣化、削れが多くなってしまう。 In a contact type charging device utilizing discharge in a minute gap, since the charging member contacts the surface of the body to be charged, the influence of the discharge in the vicinity of the contact surface of the charging member acts strongly on the body to be charged. In particular, when an organic photoreceptor is used as a member to be charged, deterioration appears remarkably, and the resin of the surface layer has a low molecular weight under the influence of electric discharge, and the surface layer is easily scraped. These influences are likely to occur at both ends of the charging member. In this case, in the case of contact charging, discharge occurs at a portion slightly away from the contact portion with the organic photoreceptor, so the discharge portion is the nip between the charging member and the photoreceptor except at both ends of the charging member. For the end, in addition to the discharge from the end of the charging member, the discharge area is at a location other than the end with respect to the drum circumferential direction. since wider than the discharge time degradation of the organophotoreceptor longer than other portions, it becomes much abrasion.
カソード電極３１１１を絶縁するための絶縁材料としては、セラミックス、テフロン（登録商標）、マイカ、ガラス、石英、シリコンゴム、ポリエチレン、ポリプロピレン等の絶縁材が使用できる。 The insulating material for insulating the cathode electrodes 3111, ceramics, Teflon, mica, glass, quartz, silicon rubber, polyethylene, insulating material such as polypropylene can be used.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001339336A JP2003140445A (en) | 2001-11-05 | 2001-11-05 | Charging member and image forming apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001339336A JP2003140445A (en) | 2001-11-05 | 2001-11-05 | Charging member and image forming apparatus |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2003140445A JP2003140445A (en) | 2003-05-14 |
| JP2003140445A5 true JP2003140445A5 (en) | 2005-06-16 |
Family
ID=19153696
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2001339336A Pending JP2003140445A (en) | 2001-11-05 | 2001-11-05 | Charging member and image forming apparatus |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2003140445A (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4725527B2 (en) | 2007-01-29 | 2011-07-13 | 富士ゼロックス株式会社 | Image forming apparatus and image carrier unit |
| JP2009053566A (en) * | 2007-08-29 | 2009-03-12 | Fuji Xerox Co Ltd | Electrifying member and image forming apparatus equipped therewith |
| JP6292889B2 (en) * | 2014-01-10 | 2018-03-14 | キヤノン株式会社 | A charging member, a process cartridge, and an image forming apparatus. |
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2001
- 2001-11-05 JP JP2001339336A patent/JP2003140445A/en active Pending
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