JPS6124992Y2 - - Google Patents
Info
- Publication number
- JPS6124992Y2 JPS6124992Y2 JP1978050324U JP5032478U JPS6124992Y2 JP S6124992 Y2 JPS6124992 Y2 JP S6124992Y2 JP 1978050324 U JP1978050324 U JP 1978050324U JP 5032478 U JP5032478 U JP 5032478U JP S6124992 Y2 JPS6124992 Y2 JP S6124992Y2
- Authority
- JP
- Japan
- Prior art keywords
- transfer paper
- suction
- photoreceptor
- corotron
- photosensitive drum
- 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.)
- Expired
Links
- 108091008695 photoreceptors Proteins 0.000 claims description 17
- 238000011144 upstream manufacturing Methods 0.000 claims description 4
- 230000003472 neutralizing effect Effects 0.000 description 18
- 230000000694 effects Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000002411 adverse Effects 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000003313 weakening effect Effects 0.000 description 1
Landscapes
- Separation, Sorting, Adjustment, Or Bending Of Sheets To Be Conveyed (AREA)
Description
【考案の詳細な説明】
本考案は、電子写真複写機の感光体からこれに
沿つて移動してくる転写紙を剥離するための転写
紙剥離装置で、特に吸引ノズルと中和コロトロン
の回動を利用した転写紙剥離装置に関する。[Detailed description of the invention] The present invention is a transfer paper peeling device for peeling transfer paper moving along the photoconductor of an electrophotographic copying machine. The present invention relates to a transfer paper peeling device using a transfer paper peeling device.
従来の吸引式の転写紙剥離装置は、転写後の転
写紙を中和する中和コロトロン及び吸引ノズルか
らなつており、感光体である感光ドラムに静電的
に付着した転写紙の付着力を中和コロトロンで弱
めた後、吸収ノズルで吸着し感光体ドラムから剥
離して次の工程へ搬送するようになつている。 A conventional suction-type transfer paper peeling device consists of a neutralizing corotron and a suction nozzle that neutralize the transfer paper after transfer, and removes the adhesion force of the transfer paper electrostatically attached to the photosensitive drum, which is the photoreceptor. After weakening with a neutralizing corotron, it is adsorbed with an absorption nozzle, peeled off from the photoreceptor drum, and transported to the next process.
上記した従来の装置にあつては、吸引ノズルは
小吸引力で確実に転写紙を吸着できるように感光
ドラムに極めて近接して設けられている。このた
め、剥離直後の転写紙上のトナーが感光ドラムの
影響を受けて画像乱れを起こすという現像が生じ
たり、一度剥離された転写紙が感光ドラムに再び
吸着する現像が生じていた。 In the conventional apparatus described above, the suction nozzle is provided very close to the photosensitive drum so that the transfer paper can be reliably attracted with a small suction force. For this reason, development occurs in which the toner on the transfer paper immediately after peeling is affected by the photosensitive drum and causes image disturbance, or development occurs in which the once peeled transfer paper is adsorbed onto the photosensitive drum again.
これは、中和コロトロンでは転写紙と感光ドラ
ムとの付着力を弱めるだけであり、転写紙とトナ
ーとが分離する程の除電は行なえない（過剰に中
和するとトナーが感光ドラムに逆転移する現象が
生じてしまう）ため、剥離後の転写紙もトナーも
電荷をもつており、これが感光ドラム上に残つて
いる電荷の影響を受けるためである。 This is because the neutralized corotron only weakens the adhesion between the transfer paper and the photosensitive drum, and cannot eliminate the charge to the extent that the transfer paper and toner separate (excessive neutralization causes the toner to transfer back to the photosensitive drum). This is because both the transfer paper and the toner have an electric charge after being peeled off, and this is affected by the electric charge remaining on the photosensitive drum.
この対策として、剥離後直ちに転写紙を感光ド
ラム表面から充分遠ざけるか、剥離用の中和コロ
トロンとは別に、剥離後の転写紙を中和するコロ
トロンを設けることが考えられる。 As a countermeasure for this, it is conceivable to move the transfer paper sufficiently away from the surface of the photosensitive drum immediately after peeling, or to provide a corotron for neutralizing the transfer paper after peeling, separately from a neutralizing corotron for peeling.
上記前者の対策の一例として、吸引部分を感光
ドラムから後退させて分離後の転写紙を感光ドラ
ムから遠ざけるようにした公知の技術（例えば実
開昭53−35034号）があるが、この公知技術では
吸引部分だけが感光ドラムから離間し、中和コロ
トロンは移動しない構成であり、吸引部分が移動
した後においても、中和コロトロンのシールドの
開口壁が感光ドラムの近傍にあるため、この部分
での転写紙を感光ドラムより遠ざかることができ
ず、吸引部分を感光ドラムから後退させて分離後
の転写紙を感光ドラムから遠ざけても感光ドラム
の静電作用がおよぼす画質への悪影響を十分にな
くすことはできなかつた。 As an example of the above-mentioned former measure, there is a known technique (for example, Utility Model Application No. 53-35034) in which the suction portion is retreated from the photosensitive drum to move the separated transfer paper away from the photosensitive drum. In this case, only the suction part is separated from the photosensitive drum, and the neutralizing corotron does not move.Even after the suction part moves, the opening wall of the shield of the neutralizing corotron is close to the photosensitive drum, so this part does not move. The transfer paper cannot be moved away from the photoconductor drum, and even if the suction part is moved back from the photoconductor drum to move the separated transfer paper away from the photoconductor drum, the negative effect on image quality caused by the electrostatic action of the photoconductor drum can be sufficiently eliminated. I couldn't do that.
また後者の場合もスペース、配置上の問題があ
り、対策としては採用し難いものであつた。 In the latter case, there are also problems with space and arrangement, making it difficult to adopt as a countermeasure.
本考案は上記のことにかんがみなされたもの
で、電子写真複写機の感光体表面の転写紙剥離点
近傍における感光体表面に沿う表面を有し、かつ
この表面に感光体表面に対向する吸引孔を設けた
吸引剥離部材と、この吸引剥離部材より転写紙の
走行方向上流側に位置する転写紙剥離用のコロト
ロンを一体状にすると共に、この転写紙剥離用の
コロトロンが感光体と共に移動さる転写紙に対向
している間中放電するようにし、この両部材を、
転写紙先端部を転写紙吸引孔にて吸着した状態で
転写紙の移動方向で、かつ感光体表面より遠ざか
る方向に移動せしめるように構成して、剥離後の
転写紙およびトナーには感光体の静電作用がおよ
ぼす画質への悪影響をなくすことができると共
に、転写紙が感光体へ再吸着されるのが防止する
ことができるようにした転写紙剥離装置を提供し
ようとするものある。 The present invention was developed in view of the above, and includes a surface along the surface of the photoreceptor in the vicinity of the transfer paper peeling point of the photoreceptor surface of an electrophotographic copying machine, and a suction hole facing the surface of the photoreceptor on this surface. A suction peeling member provided with a suction peeling member and a corotron for peeling the transfer paper located upstream of the suction peeling member in the traveling direction of the transfer paper are integrated, and the corotron for peeling the transfer paper moves together with the photoreceptor. Both members are made to discharge while facing the paper, and
The leading edge of the transfer paper is moved in the moving direction of the transfer paper and in the direction away from the surface of the photoconductor while the leading edge of the transfer paper is attracted by the transfer paper suction hole, and the transfer paper and toner after peeling are free from the photoconductor. Some attempts have been made to provide a transfer paper peeling device that can eliminate the adverse effects of electrostatic action on image quality and also prevent the transfer paper from being re-adsorbed onto the photoreceptor.
以下その構成を図面に示した実施例に基づいて
説明する。 The configuration will be explained below based on the embodiment shown in the drawings.
吸引ノズル１は感光ドラム８の表面に沿う下面
を有し、この下面に複数個の吸引孔２が設けてあ
る。そしてこの吸引ノズル１は絶縁体５を介して
支持部材９に固着されている。また支持部材９に
は、感光ドラム８と共に移動される転写紙に対向
している間中放電するようにした中和コロトロン
３が、上記吸引ノズル１より転写紙の移動方向上
流側に位置し、かつ着脱自在にとりつけられてい
る。支持部材９は軸４に回動自在に支持され、図
示しない公知の装置にて所定のタイミングで、上
記吸引ノズル１の下面が感光ドラム８の外周面の
接線方向にわずかな隙間をあけて対向する位置か
ら、搬送ベルト６に対向する位置間にわたつて回
動するようにしてある。なお搬送ベルト６は複数
条有しており、回動した吸引ノズル１はそのベル
ト間に間入される。搬送ベルト６の内側には搬送
用吸引ボツクス７があり、転写紙は吸引されなが
ら搬送ベルト６にて搬送されるようになつてい
る。 The suction nozzle 1 has a lower surface along the surface of the photosensitive drum 8, and a plurality of suction holes 2 are provided on this lower surface. This suction nozzle 1 is fixed to a support member 9 via an insulator 5. Further, on the support member 9, a neutralizing corotron 3 that is configured to discharge electricity while facing the transfer paper that is moved together with the photosensitive drum 8 is located upstream of the suction nozzle 1 in the direction of movement of the transfer paper; And it is detachably attached. The support member 9 is rotatably supported by a shaft 4, and at a predetermined timing by a known device (not shown), the lower surface of the suction nozzle 1 is opposed to the outer peripheral surface of the photosensitive drum 8 with a slight gap in the tangential direction. The conveyor belt 6 is configured to rotate from a position facing the conveyor belt 6 to a position facing the conveyor belt 6. The conveyor belt 6 has a plurality of strips, and the rotated suction nozzle 1 is inserted between the belts. There is a conveyance suction box 7 inside the conveyor belt 6, and the transfer paper is conveyed by the conveyor belt 6 while being attracted.
しかして感光ドラム８に沿つて移動してきた転
写紙は、吸引ノズル１の吸引孔２による吸引力に
て吸引されて感光ドラム８より剥離される。そし
てこれと同時に吸引ノズル１と中和コロトロン３
とが一体的に転写紙の走行方向に回動し、上記感
光ドラム８より剥離された転写紙は搬送ベルト６
に受け渡される。このとき吸引ノズル１と共に中
和コロトロン３も転写紙の走行方向に回動するた
め、感光ドラム８に沿つて移動されてきた転写紙
に対向している間中放電されている中和コロトロ
ン３から、上記吸引ノズル１にて剥離された部分
にも引き続いて放電される。またこのとき、上記
したように、吸引ノズル１より転写紙の走行方向
上流側に位置する中和コロトロン３を吸引ノズル
１と共に転写紙の走行方向に回動することによ
り、中和コロトロン３の転写紙の走行方向下流側
が感光体ドラム８より離間する方向に移動し、こ
の中和コロトロン３の下流側と感光ドラム８との
間の空間が大きくなり、従つて転写紙の中和コロ
トロン３の下流側に対向する部分を吸引ノズル１
および中和コロトロン３の回動によつて感光ドラ
ム８より大きく離間される。これにより、転写紙
およびこの転写紙に転写されたトナーには感光ド
ラム８の静電作用がおよぼす画質への悪影響がな
くなり、また剥離された転写紙が感光ドラムに再
び吸着されることがない。 The transfer paper that has moved along the photosensitive drum 8 is then peeled off from the photosensitive drum 8 by being sucked by the suction force of the suction hole 2 of the suction nozzle 1 . At the same time, suction nozzle 1 and neutralizing corotron 3
The transfer paper is rotated integrally in the running direction of the transfer paper, and the transfer paper peeled off from the photosensitive drum 8 is transferred to the conveyor belt 6.
handed over to. At this time, since the neutralizing corotron 3 also rotates in the traveling direction of the transfer paper along with the suction nozzle 1, the neutralizing corotron 3, which is being discharged while facing the transfer paper that has been moved along the photosensitive drum 8, , the discharge is subsequently applied to the part that has been peeled off by the suction nozzle 1. At this time, as described above, by rotating the neutralizing corotron 3 located upstream of the suction nozzle 1 in the traveling direction of the transfer paper together with the suction nozzle 1, the transfer of the neutralizing corotron 3 is performed. The downstream side of the paper in the running direction moves in a direction away from the photosensitive drum 8, and the space between the downstream side of the neutralizing corotron 3 and the photosensitive drum 8 becomes larger, and therefore the downstream side of the neutralizing corotron 3 of the transfer paper moves in a direction away from the photosensitive drum 8. Suction nozzle 1 on the part facing the side
Due to the rotation of the neutralizing corotron 3, it is separated from the photosensitive drum 8 by a large distance. As a result, the image quality of the transfer paper and the toner transferred to the transfer paper is no longer affected by the electrostatic action of the photosensitive drum 8, and the peeled transfer paper is not attracted to the photosensitive drum again.
なお上記吸引ノズル１の吸引機構はエアタンク
を減圧しておき、転写紙の移動にタイミングを合
わせてバルブを開くとか、エアシリンダによると
か等の公知技術を用いる。また支持部材９の回動
は転写紙の移動にタイミングを合わせて行なうべ
きものであり、そのための機構としてはカム、ソ
レノイド等を用いる。 The suction mechanism of the suction nozzle 1 uses a known technique such as reducing the pressure in an air tank and opening a valve in synchronization with the movement of the transfer paper, or using an air cylinder. Further, the rotation of the support member 9 should be performed in synchronization with the movement of the transfer paper, and a cam, a solenoid, or the like is used as a mechanism for this purpose.
本考案は上記のようになるから、転写紙の感光
体より剥離された部分にも、そのまま中和コロト
ロン３にて放電することができ、また、剥離時に
おける中和コロトロン３の下流側が感光体から離
間して、転写紙のこの部分に対向する部分を中和
コロトロン３に邪魔されることなく感光体に対し
て大きく離間することができることにより、剥離
後の転写紙およびトナーには感光体の静電作用が
およぼす画質への悪影響をなくすことができると
共に、転写紙が感光体へ再吸着されるのが防止さ
れる。 Since the present invention is as described above, the portion of the transfer paper that has been peeled off from the photoreceptor can be directly discharged by the neutralizing corotron 3, and the downstream side of the neutralizing corotron 3 at the time of peeling is the photoreceptor. Since the part of the transfer paper facing this part can be separated from the photoreceptor by a large distance without being disturbed by the neutralizing corotron 3, the transfer paper and toner after peeling are free from the photoreceptor. It is possible to eliminate the adverse effect on image quality caused by electrostatic action, and to prevent the transfer paper from being re-adsorbed onto the photoreceptor.
図面は本考案の実施例の要部を示す断面図であ
る。
１は吸引ノズル、２は吸引孔、８は感光体ドラ
ム。
The drawings are cross-sectional views showing essential parts of an embodiment of the present invention. 1 is a suction nozzle, 2 is a suction hole, and 8 is a photosensitive drum.
Claims (1)
傍における感光体表面に沿う表面を有し、かつこ
の表面に感光体表面に対向する吸引孔を設けた吸
引剥離部材と、この吸引剥離部材より転写紙の走
行方向上流側に位置する転写紙剥離用のコロトロ
ンとを一体状にすると共に、この転写紙剥離用の
コロトロンが感光体と共に移動される転写紙に対
向している間中放電するようにし、この両部材
を、転写紙先端部を転写紙吸引孔にて吸着した状
態で転写紙の移動方向で、かつ感光体表面より遠
ざかる方向に移動せしめるように構成したことを
特徴とする転写紙剥離装置。 A suction peeling member having a surface along the photoreceptor surface in the vicinity of the transfer paper peeling point on the photoreceptor surface of an electrophotographic copying machine, and having a suction hole facing the photoreceptor surface on this surface, and from this suction peeling member. A corotron for separating the transfer paper located on the upstream side in the traveling direction of the transfer paper is integrated with the corotron, and the corotron for separating the transfer paper is configured to discharge while facing the transfer paper that is moved together with the photoreceptor. and the two members are configured to be moved in the moving direction of the transfer paper and in the direction away from the surface of the photoreceptor while the leading edge of the transfer paper is attracted by the transfer paper suction hole. Peeling device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1978050324U JPS6124992Y2 (en) | 1978-04-18 | 1978-04-18 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1978050324U JPS6124992Y2 (en) | 1978-04-18 | 1978-04-18 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS54153942U JPS54153942U (en) | 1979-10-26 |
| JPS6124992Y2 true JPS6124992Y2 (en) | 1986-07-28 |
Family
ID=28937577
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1978050324U Expired JPS6124992Y2 (en) | 1978-04-18 | 1978-04-18 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6124992Y2 (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US689277A (en) * | 1901-03-05 | 1901-12-17 | Harvey L Beck | Split-machine. |
| JPS52145226A (en) * | 1976-05-24 | 1977-12-03 | Xerox Corp | Image copying apparatus of electrostatic type |
| JPS5335034B2 (en) * | 1975-04-14 | 1978-09-25 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5335034U (en) * | 1977-08-25 | 1978-03-28 |
-
1978
- 1978-04-18 JP JP1978050324U patent/JPS6124992Y2/ja not_active Expired
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US689277A (en) * | 1901-03-05 | 1901-12-17 | Harvey L Beck | Split-machine. |
| JPS5335034B2 (en) * | 1975-04-14 | 1978-09-25 | ||
| JPS52145226A (en) * | 1976-05-24 | 1977-12-03 | Xerox Corp | Image copying apparatus of electrostatic type |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS54153942U (en) | 1979-10-26 |
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