JPS6049352A - Image forming device - Google Patents
Image forming deviceInfo
- Publication number
- JPS6049352A JPS6049352A JP58157549A JP15754983A JPS6049352A JP S6049352 A JPS6049352 A JP S6049352A JP 58157549 A JP58157549 A JP 58157549A JP 15754983 A JP15754983 A JP 15754983A JP S6049352 A JPS6049352 A JP S6049352A
- Authority
- JP
- Japan
- Prior art keywords
- water
- photosensitive body
- corona
- photoreceptor
- roller
- 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
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 54
- 238000004140 cleaning Methods 0.000 claims abstract description 9
- 108091008695 photoreceptors Proteins 0.000 claims description 37
- 230000015572 biosynthetic process Effects 0.000 abstract description 3
- 238000003825 pressing Methods 0.000 abstract description 2
- 238000007790 scraping Methods 0.000 abstract description 2
- 238000007786 electrostatic charging Methods 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 238000010438 heat treatment Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000002411 adverse Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 3
- 230000008030 elimination Effects 0.000 description 2
- 238000003379 elimination reaction Methods 0.000 description 2
- 239000012528 membrane Substances 0.000 description 2
- 238000005498 polishing Methods 0.000 description 2
- 239000004065 semiconductor Substances 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 1
- 239000003082 abrasive agent Substances 0.000 description 1
- 229910021417 amorphous silicon Inorganic materials 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000000593 degrading effect Effects 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 239000004745 nonwoven fabric Substances 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000002940 repellent Effects 0.000 description 1
- 239000005871 repellent Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G21/00—Arrangements not provided for by groups G03G13/00 - G03G19/00, e.g. cleaning, elimination of residual charge
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G2221/00—Processes not provided for by group G03G2215/00, e.g. cleaning or residual charge elimination
- G03G2221/0026—Cleaning of foreign matter, e.g. paper powder, from imaging member
- G03G2221/0031—Type of foreign matter
- G03G2221/0042—Paper powder and other dry foreign matter
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G2221/00—Processes not provided for by group G03G2215/00, e.g. cleaning or residual charge elimination
- G03G2221/0026—Cleaning of foreign matter, e.g. paper powder, from imaging member
- G03G2221/0047—Type of cleaning device
- G03G2221/0063—Cleaning device for foreign matter separate from residual toner cleaning device
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G2221/00—Processes not provided for by group G03G2215/00, e.g. cleaning or residual charge elimination
- G03G2221/0026—Cleaning of foreign matter, e.g. paper powder, from imaging member
- G03G2221/0068—Cleaning mechanism
- G03G2221/0084—Liquid
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Control Or Security For Electrophotography (AREA)
Abstract
Description
【発明の詳細な説明】 本発明は画像形成装置９％に感光体表面に帯電。[Detailed description of the invention] In the present invention, the surface of the photoreceptor is charged in 9% of the image forming apparatus.
除電および転写をするためにコロナ放電を施す画像形成
装置に関する。The present invention relates to an image forming apparatus that applies corona discharge for static elimination and transfer.
この種の画像形成装置はコロナ放電によって空気中の分
子が変化し、窒素酸化物等の物質を生成する場合がある
。これらのコロナ生成物は機外に放出されないだめに感
光体表面上に付着、積層し。In this type of image forming apparatus, molecules in the air change due to corona discharge, and substances such as nitrogen oxides may be generated. These corona products adhere and accumulate on the surface of the photoreceptor to prevent them from being released outside the machine.
高湿環境下において上記生成物が水蒸気の影響をうけて
イオン化し、感光体表面の抵抗が下がり該感光体表面に
形成される画像をボケさせてしまう等の悪影響をおよほ
すことがある。従来、上記のコロナ生成物の除去は現像
剤に各種の研磨材を混入して感光体表面を研磨すること
で行なっているが、感光体表面は少量ずつ磨耗して該感
光体表面に形成される画質がしだいに悪くなるという欠
点があり、感光体の寿命を縮めていた。In a high-humidity environment, the above-mentioned products are ionized under the influence of water vapor, which may cause adverse effects such as lowering the resistance of the photoreceptor surface and blurring the image formed on the photoreceptor surface. Conventionally, the above-mentioned corona products have been removed by mixing various abrasives into the developer and polishing the surface of the photoreceptor. The disadvantage was that the image quality gradually deteriorated, which shortened the life of the photoreceptor.
また、コロナ生成物が吸湿することで画像のボケを生じ
ることから、ドラム状感光体を固定する軸にヒーターを
挿入したり、感光体内面に面状発熱体を設ける等して感
光体を加熱乾燥していた。In addition, since corona products absorb moisture and cause blurring of the image, it is necessary to heat the photoreceptor by inserting a heater into the shaft that fixes the drum-shaped photoreceptor, or by installing a planar heating element on the inner surface of the photoreceptor. It was dry.
このために感光体内部の半導体である／光導電層の抵抗
値が減少し１画像に悪影響をおよほすことがある。さら
に、感光体内面から加熱して表面温度を上昇させるため
９表面が所定の温度に上昇するまでに長い時間を要する
こととなるので、複写スイッチとは別に電源コンセント
に連動してヒーター回路を閉路するように構成し、複写
使用時外の夜間でも通電の必要があった。As a result, the resistance value of the semiconductor/photoconductive layer inside the photoreceptor decreases, which may adversely affect one image. Furthermore, since the surface temperature is increased by heating from the inside of the photoconductor, it takes a long time for the surface to reach a predetermined temperature, so the heater circuit is closed in conjunction with the power outlet separately from the copy switch. It was necessary to turn on electricity even at night when copying was not in use.
本発明は上記の欠点を除去し、コロナ生成物を効率よく
除去することを目的とする。つまり、コロナ生成物は水
溶性であり水拭きで容易に除去可能なものである。The present invention aims to eliminate the above-mentioned drawbacks and efficiently remove corona products. That is, corona products are water-soluble and can be easily removed by wiping with water.
また、水拭きを用いてこれを除去する場合、常時行う必
袂はなく、コピー終了後の後回転時のみでも良く、かつ
、コロナ生成物を含んだ水の回収も非常に容易である。Further, when removing the corona products using a wet wipe, it is not necessary to do it all the time, but it can be done only during post-rotation after copying is completed, and it is very easy to recover water containing corona products.
これによって感光体表面を研磨することなくかつヒータ
ー等による感光体内部の半導体特性の低下を伴なわずに
コロナ生成物の影響を除去することが可能になった。This makes it possible to remove the influence of corona products without polishing the surface of the photoreceptor and without degrading the semiconductor characteristics inside the photoreceptor due to a heater or the like.
以下２本発明の一実施例を図面について説明する。第１
図は本発明画像形成装置の概略構成を示すもので、１は
軸１ａによって矢示方向へ回転自在に支持された９周面
にアモルファスシリコン等の光導電層を有するドラム状
の電子写真感光体であって、その周囲には帯電用直流コ
ロナ放電器２゜画像投影光学系１０．現像器６．転写用
コロナ放電器４．クリーニング器５．除電用交流コロナ
放電器６等の画像形成プロセス機器が順次配置されてい
る。７は感光体表面に水を塗布する水塗布ローラで、多
孔質あるいは連続多孔質の弾性ゴムローラ例えばＰＶＡ
系多孔質体、ウレタン系多孔質体またはそれに準するも
のであればよい。この水塗布ローラには同材質の水含有
部材７ａから水の供給を受けている。８は感光体表面か
ら水を除去する水除去用ロー２で、このローラ表面の水
はローラに圧接した水掻き取シ部材８ａ（例えばローラ
と同材質）によって除去する。Two embodiments of the present invention will be described below with reference to the drawings. 1st
The figure shows a schematic configuration of the image forming apparatus of the present invention, in which 1 is a drum-shaped electrophotographic photoreceptor having a photoconductive layer such as amorphous silicon on its 9 circumferential surfaces, supported rotatably in the direction of the arrow by a shaft 1a. Around it are a DC corona discharger for charging 2 degrees and an image projection optical system 10. Developing device6. Corona discharger for transfer4. Cleaning device 5. Image forming process equipment, such as an AC corona discharger 6 for static elimination, is sequentially arranged. 7 is a water application roller that applies water to the surface of the photoreceptor, and is a porous or continuous porous elastic rubber roller such as PVA.
Any material such as a porous body, a porous urethane body, or a similar material may be used. This water application roller is supplied with water from a water containing member 7a made of the same material. Reference numeral 8 denotes a water removing row 2 for removing water from the surface of the photoreceptor, and the water on the surface of this roller is removed by a water scraping member 8a (for example, made of the same material as the roller) pressed against the roller.
上記構成の画像形成装置において９画像形成動作終了後
に全てのコロナ放電器をオフとし、感光体１を後回転さ
せ、この後回転と同時に水塗布ローラ７を不図示の駆動
手段によって感光体表面に圧接させる。これにより、感
光体表面は水で覆われ、この水にコロナ生成物が溶は込
む仁とになる。In the image forming apparatus having the above configuration, after completing nine image forming operations, all the corona dischargers are turned off, the photoreceptor 1 is rotated afterward, and at the same time as the subsequent rotation, the water application roller 7 is applied to the surface of the photoreceptor by a driving means (not shown). Apply pressure. As a result, the surface of the photoreceptor is covered with water, and the corona products dissolve into this water.
次に上記の水が渇く前に水除去ローラ８を不図示の駆動
手段によって感光体表面に圧接させて該水を拭き取るこ
とにより、感光体表面に付着したコロナ生成物を９０夕
（以上除去することができ９画像形成に対する悪影響を
確実に除去することができる。Next, before the water dries up, the water removal roller 8 is brought into pressure contact with the surface of the photoreceptor by an unillustrated driving means to wipe off the water, thereby removing corona products adhering to the surface of the photoreceptor for 90 days or more. Therefore, it is possible to reliably eliminate any adverse effects on image formation.
上記水塗布用ロー２７および水除去ローラ８の配置位置
は第１図に示すようにクリーニング器５の入口側の他、
出口側でもよい。また、第２図に示すように水塗布ロー
ラ７をクリーニング器５の入口側に水除去ローラ８を該
クリーニング器の出口側に配置させてもよく、この場合
、コロナ生成物の除去効果は増大する。The water application roller 27 and the water removal roller 8 are arranged at the entrance side of the cleaning device 5, as shown in FIG.
It may be on the exit side. Furthermore, as shown in FIG. 2, the water application roller 7 may be placed on the inlet side of the cleaning device 5, and the water removal roller 8 may be placed on the exit side of the cleaning device.In this case, the effect of removing corona products is increased. do.
上記のように水によりコロナ生成物が除去される感光体
表面は撥水性であればよい。また、使用する水は装置使
用温度と同温度の他、４０℃程度に加熱したものを使用
した場合、コロナ生成物の溶解度が上り、除去効果が増
大する。The surface of the photoreceptor from which corona products are removed by water as described above only needs to be water repellent. In addition, if the water used is heated to about 40°C, in addition to the same temperature as the operating temperature of the apparatus, the solubility of the corona products increases and the removal effect increases.
水除去ロー２８を不織布等で作成し１巻取υ方式を採用
した場合、感光体表面上の他の付着物も除去することが
可能である。When the water removal row 28 is made of nonwoven fabric or the like and a one-winding method is adopted, it is possible to remove other deposits on the surface of the photoreceptor.
また、水塗布及び水除去の行程は感光体１の後回転時の
みでなく、クリーニング行程終了直後でも同様の効果が
得られる。水除去ローラ８は水塗布ローラ７と同一の材
料を用いる他第６図に示すように水除去ローラ８と感光
体表面の間に半透膜９を用いることで効率よく水を取り
除くことができる。この時、用いる半透膜９は感光体方
向から水除去ローラ方向に水およびそれに含まれるイオ
ンを透過し反対方向は不透過なものであり、Ｐｌ系フィ
ルムおよび２分子膜を有するフィルムであればよい。Further, the same effect can be obtained not only during the post-rotation of the photoreceptor 1 but also immediately after the cleaning process is performed during the water application and water removal processes. The water removal roller 8 is made of the same material as the water application roller 7, and as shown in FIG. 6, a semi-permeable membrane 9 is used between the water removal roller 8 and the surface of the photoconductor to efficiently remove water. . At this time, the semi-permeable membrane 9 used is one that transmits water and ions contained therein from the direction of the photoconductor toward the water removal roller, but is impermeable in the opposite direction. good.
以上詳述したように本発明によれば、感光体表面を水で
洗浄するので該感光体表面から水溶性コロナ生成物の略
全てを確実に除去できる。オた。As detailed above, according to the present invention, since the surface of the photoreceptor is washed with water, substantially all of the water-soluble corona products can be reliably removed from the surface of the photoreceptor. Ota.
感光体表面を研磨する必要がないため、感光体の寿命を
縮めることがない。感光体表面から洗浄水を除去する水
除去部材を巻取ｐ式圧することによシ該感光体表面に付
着した塵埃等も除去できる。Since there is no need to polish the surface of the photoreceptor, the life of the photoreceptor is not shortened. Dust and the like adhering to the surface of the photoreceptor can also be removed by winding up and applying pressure to the water removal member that removes cleaning water from the surface of the photoreceptor.
従って、感光体表面には吸湿すべき物質がなくなるため
、従来のように感光体の回転軸にヒータを入れたり該感
光体内に面状発熱体を組込れて加熱乾燥する必要がなく
なり、加熱に伴なう前記従来の不都合も防止でき９画像
ボケ、画像ムラのない高品質の画像形成ができる等の効
果が得られる。Therefore, there is no substance on the surface of the photoreceptor that should absorb moisture, so there is no need to install a heater on the rotation shaft of the photoreceptor or incorporate a planar heating element inside the photoreceptor for heating and drying. It is possible to prevent the above-mentioned conventional problems associated with image blurring and to form high-quality images without image unevenness.
第１図は本発明画像形成装置の実施例を示す概略構成図
、第２図は他の実施例を示す要部図、第６図は感光体表
面の水除去説明図である。
１は感光体、７は水塗布ローラ、８は水除去口笛１図
メ
臣
第２図
第３図
トノＯ
ト・FIG. 1 is a schematic configuration diagram showing an embodiment of the image forming apparatus of the present invention, FIG. 2 is a main part diagram showing another embodiment, and FIG. 6 is an explanatory diagram of water removal from the surface of a photoreceptor. 1 is a photoreceptor, 7 is a water application roller, and 8 is a water removal whistle.
Claims (1)
コロナ放電を施す画像形成装置において。 前記感光体表面を水で清掃して該感光体表面に前記コロ
ナ放電によって生成されたコロナ生成物を除去する水清
掃手段を備えたことを特徴とする画像形成装置。(1) In an image forming apparatus that applies corona discharge to charge/discharge and transfer the surface of a photoreceptor. An image forming apparatus comprising: a water cleaning means for cleaning the surface of the photoreceptor with water to remove corona products generated on the surface of the photoreceptor by the corona discharge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58157549A JPS6049352A (en) | 1983-08-29 | 1983-08-29 | Image forming device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58157549A JPS6049352A (en) | 1983-08-29 | 1983-08-29 | Image forming device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6049352A true JPS6049352A (en) | 1985-03-18 |
Family
ID=15652106
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP58157549A Pending JPS6049352A (en) | 1983-08-29 | 1983-08-29 | Image forming device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6049352A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1220056A1 (en) * | 2000-12-28 | 2002-07-03 | Ricoh Company, Ltd. | Device for removing image disfiguring substances and image forming apparatus using the same |
| JP2006145941A (en) * | 2004-11-22 | 2006-06-08 | Kyocera Mita Corp | Cleaning member for scorotron charger |
-
1983
- 1983-08-29 JP JP58157549A patent/JPS6049352A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1220056A1 (en) * | 2000-12-28 | 2002-07-03 | Ricoh Company, Ltd. | Device for removing image disfiguring substances and image forming apparatus using the same |
| US6853822B2 (en) | 2000-12-28 | 2005-02-08 | Ricoh Company, Ltd. | Device for removing image disfiguring substances and image forming apparatus using the same |
| JP2006145941A (en) * | 2004-11-22 | 2006-06-08 | Kyocera Mita Corp | Cleaning member for scorotron charger |
| JP4630648B2 (en) * | 2004-11-22 | 2011-02-09 | 京セラミタ株式会社 | Scorotron charger cleaning material |
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