JPH0517661U - Fixing unit - Google Patents
Fixing unitInfo
- Publication number
- JPH0517661U JPH0517661U JP6330791U JP6330791U JPH0517661U JP H0517661 U JPH0517661 U JP H0517661U JP 6330791 U JP6330791 U JP 6330791U JP 6330791 U JP6330791 U JP 6330791U JP H0517661 U JPH0517661 U JP H0517661U
- Authority
- JP
- Japan
- Prior art keywords
- heat roller
- fixing unit
- sheet
- photosensitive drum
- paper
- 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
Landscapes
- Fixing For Electrophotography (AREA)
- Paper Feeding For Electrophotography (AREA)
- Delivering By Means Of Belts And Rollers (AREA)
- Feeding Of Articles By Means Other Than Belts Or Rollers (AREA)
Abstract
(57)【要約】
【目的】 電子写真記録装置の定着ユニットの構造に関
し、転写の信頼性向上を目的とする。
【構成】 像担持体のトナー像を転写した用紙をヒート
ロ−ラに圧接して熱定着する定着ユニットに於いて、像
担持体の面とヒートロ−ラの面とを結ぶ平面からヒート
ロ−ラ側に突出して用紙をヒートロ−ラに案内する突起
部を備えて構成する。
(57) [Abstract] [Purpose] With respect to the structure of a fixing unit of an electrophotographic recording apparatus, an object thereof is to improve transfer reliability. In a fixing unit in which a sheet on which a toner image on an image carrier is transferred is pressed against a heat roller to be heat-fixed, a heat roller side from a plane connecting a surface of the image carrier and the surface of the heat roller. It is configured to have a protrusion that protrudes to guide the sheet to the heat roller.
Description
【０００１】[0001]
本考案は電子写真記録装置の定着ユニットの構造に関する。 近来、オフイスオ−トメ−ション（ＯＡ：Office Automation)の拡大に伴って 普通紙が使用出来、印字品質も高い出力装置が使用されるようになって来た。 The present invention relates to the structure of a fixing unit of an electrophotographic recording device. Recently, with the expansion of office automation (OA), plain paper can be used, and output devices with high printing quality have come to be used.
【０００２】 この為電子写真記録方法を用いた複写機やファクシミリ装置が実現している。 これらの装置に於いては、用紙に転写したトナー像を高品質で定着出来ること が重要である。Therefore, a copying machine and a facsimile machine using the electrophotographic recording method have been realized. In these devices, it is important that the toner image transferred onto the paper can be fixed with high quality.
【０００３】[0003]
図２の概要図に示す如く本考案が適用される電子写真記録装置は、光に感応し て導電性が変化する感光層を表面に備えた像担持体である感光ドラム１と、感光 ドラム１の表面との電位差でトナーをドラム表面に付着させる現像器２と、感光 ドラム１の表面を均一に帯電させる帯電器３と、レーザー光の走査に依って感光 ドラム１上の帯電量を変化させて静電潜像を形成する光学系４と、感光ドラム１ 上のトナー像を用紙５に転写する転写器６と、用紙５に転写されたトナー像を加 熱定着するハロゲンランプ等を備えた定着ユニット７等を備えて構成される。 As shown in the schematic view of FIG. 2, the electrophotographic recording apparatus to which the present invention is applied includes a photosensitive drum 1 which is an image bearing member having a photosensitive layer on the surface of which the conductivity changes in response to light, and the photosensitive drum 1. Developing device 2 for adhering toner to the drum surface due to the potential difference from the surface of the photosensitive drum 1, charger 3 for uniformly charging the surface of the photosensitive drum 1, and changing the charge amount on the photosensitive drum 1 by scanning the laser beam. An optical system 4 for forming an electrostatic latent image on the photosensitive drum 1, a transfer device 6 for transferring the toner image on the photosensitive drum 1 to the paper 5, and a halogen lamp for heating and fixing the toner image transferred on the paper 5. The fixing unit 7 and the like are provided.
【０００４】 定着ユニット７は、図３の側面図に示す如くヒートロ−ラ８と、ヒートロ−ラ ８に用紙５を圧接する加圧ローラ９とを備え、保守上の要求からヒートロ−ラ８ と加圧ローラ９は分離可能となっている。The fixing unit 7 includes a heat roller 8 and a pressure roller 9 for pressing the paper 5 against the heat roller 8 as shown in the side view of FIG. The pressure roller 9 is separable.
【０００５】 即ち、ヒートロ−ラ８は固定フレーム10に、加圧ローラ９は上部フレーム11に 回転自在に取付けられ、上部フレーム11は支点12を中心に矢印Ａ方向に回動可能 となっている。That is, the heat roller 8 is rotatably attached to the fixed frame 10 and the pressure roller 9 is rotatably attached to the upper frame 11, and the upper frame 11 is rotatable about the fulcrum 12 in the arrow A direction. .
【０００６】 転写器６で感光ドラム１のトナー像を転写された用紙５は、感光ドラム１の面 とヒートロ−ラ８の面とを結ぶ平面上を移動し、加圧ローラ９で加圧されてヒー トロ−ラ８に圧接し、ヒートロ−ラ８で加熱されてトナー像は用紙５に定着され る。The sheet 5 to which the toner image on the photosensitive drum 1 has been transferred by the transfer device 6 moves on a plane connecting the surface of the photosensitive drum 1 and the surface of the heat roller 8, and is pressed by the pressure roller 9. Is pressed against the heater 8 and heated by the heat roller 8 to fix the toner image on the sheet 5.
【０００７】[0007]
上記の如くトナー像が転写された用紙は、感光ドラムの面とヒートロ−ラの面 とを結ぶ平面上を移動するようになっているが、移動は必ずしもこの面を通ると は限らず、用紙の先端が加圧ローラに当たると加圧ローラ表面のゴムとの摩擦に 依って用紙が正常に送られず転写部で転写に乱れが生じたり、用紙と感光ドラム の密着性が悪くなって転写抜けが発生すると言う問題点があった。 The sheet on which the toner image has been transferred as described above moves on a plane connecting the surface of the photosensitive drum and the surface of the heat roller, but the movement does not always pass through this surface, and the sheet does not necessarily move. If the tip of the paper hits the pressure roller, the paper will not be fed normally due to the friction with the rubber on the surface of the pressure roller, and the transfer will be disturbed at the transfer part, or the adhesion between the paper and the photosensitive drum will deteriorate and the transfer omission will occur. There was a problem that occurred.
【０００８】 本考案は、転写の信頼性向上を目的とするものである。The present invention aims to improve the reliability of transfer.
【０００９】[0009]
本考案に於いては、図１の側面図に示す如く像担持体１の面とヒートロ−ラ８ の面とを結ぶ平面からヒートロ−ラ側に突出して用紙５をヒートロ−ラ８に案内 する突起部13を備えたものである。 In the present invention, as shown in the side view of FIG. 1, the sheet 5 is guided to the heat roller 8 by protruding from the plane connecting the surface of the image carrier 1 and the surface of the heat roller 8 to the heat roller side. The projection 13 is provided.
【００１０】[0010]
感光ドラムを離れた用紙は、突起部に押圧されてヒートロ−ラ方向に案内され る為、最初に加圧ローラに当接することは無くなる。 Since the paper that has left the photosensitive drum is pressed by the protrusion and guided in the heat roller direction, it does not contact the pressure roller first.
【００１１】[0011]
本考案に於いては、図１の側面図に示す如く感光ドラム１の面とヒートロ−ラ ８の面とを結ぶ平面からヒートロ−ラ側に突出して用紙５をヒートロ−ラ８に案 内する突起部13を備えたものである。 In the present invention, as shown in the side view of FIG. 1, the paper 5 is projected into the heat roller 8 by protruding from the plane connecting the surface of the photosensitive drum 1 and the surface of the heat roller 8 to the heat roller side. The projection 13 is provided.
【００１２】 突起部13は上部フレーム11の用紙挿入口に例えばＬ字状に設けられる。 このようにすることで、感光ドラム１を離れた用紙５は、図示の如く突起部13 に押圧されてヒートロ−ラ８の方向に案内される。The protrusion 13 is provided in the paper insertion opening of the upper frame 11 in, for example, an L shape. By doing so, the sheet 5 that has left the photosensitive drum 1 is pressed by the protrusion 13 and guided in the direction of the heat roller 8 as shown in the figure.
【００１３】 この為、用紙５が最初に加圧ローラ９に当接することは無くなり、従来技術の 如き転写乱れや転写抜けが防止出来るようになった。For this reason, the sheet 5 does not come into contact with the pressure roller 9 first, and it is possible to prevent the transfer disturbance and the transfer omission as in the prior art.
【００１４】[0014]
本考案に依って用紙は確実に定着ローラに移送されることになり、転写部に於 ける転写乱れや転写抜けが防止されるようになる等、産業上に多大の効果を奏す る。 According to the present invention, the sheet is reliably transferred to the fixing roller, and the transfer disorder and the transfer omission in the transfer section can be prevented, which is a great industrial effect.
【図１】 本考案の定着ユニットの側面図、FIG. 1 is a side view of a fixing unit of the present invention,
【図２】 本考案が適用される電子写真記録装置の概要
図、FIG. 2 is a schematic view of an electrophotographic recording device to which the present invention is applied,
【図３】 従来の定着ユニットの側面図、FIG. 3 is a side view of a conventional fixing unit,
１ 像担持体（感光ドラム）、 ５ 用紙、 ６ 転写器、 ８ ヒートロ−ラ、 ９ 加圧ローラ、 10 固定フレーム、 11 上部フレーム、 13 突起部、 1 image carrier (photosensitive drum), 5 paper, 6 transfer device, 8 heat roller, 9 pressure roller, 10 fixed frame, 11 upper frame, 13 protrusion,
Claims (1)
(5) をヒートロ−ラ(8) に圧接して熱定着する定着ユニ
ットに於いて、 前記像担持体(1) の面と前記ヒートロ−ラ(8) の面とを
結ぶ平面からヒートロ−ラ側に突出して前記用紙(5) を
該ヒートロ−ラ(8) に案内する突起部(13)を備えたこと
を特徴とする定着ユニット。1. A sheet on which a toner image on an image carrier (1) is transferred.
In a fixing unit that heat-fixes (5) to a heat roller (8) by pressure, from the plane connecting the surface of the image carrier (1) and the surface of the heat roller (8), A fixing unit comprising a protrusion (13) protruding to the side to guide the sheet (5) to the heat roller (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6330791U JPH0517661U (en) | 1991-08-12 | 1991-08-12 | Fixing unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6330791U JPH0517661U (en) | 1991-08-12 | 1991-08-12 | Fixing unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0517661U true JPH0517661U (en) | 1993-03-05 |
Family
ID=13225506
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6330791U Pending JPH0517661U (en) | 1991-08-12 | 1991-08-12 | Fixing unit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0517661U (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6029772A (en) * | 1983-07-29 | 1985-02-15 | Hitachi Ltd | Conveying and fixing device for sheet paper |
-
1991
- 1991-08-12 JP JP6330791U patent/JPH0517661U/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6029772A (en) * | 1983-07-29 | 1985-02-15 | Hitachi Ltd | Conveying and fixing device for sheet paper |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP0395887B1 (en) | Conveying rotatable member and conveying apparatus | |
| US4755849A (en) | Fixing device for an image reproducing apparatus | |
| US5303016A (en) | Image fixing device for image forming apparatus including means for locally heating inner wall of fixing means at location corresponding to nip | |
| JPS641027B2 (en) | ||
| US4689471A (en) | Heat and pressure fuser for fixing toner images to copy substrates | |
| US20180246447A1 (en) | Fixing device | |
| US6198902B1 (en) | Electrostatographic reproduction machine including a dual function fusing belt deskewing and heating assembly | |
| JPS61156178A (en) | Thermal pressurizaton fixing apparatus | |
| US9983527B2 (en) | Fixing device | |
| US4339194A (en) | Cold pressure fusing apparatus | |
| JPH03294884A (en) | Skew prevention structure for electrophotographic printer | |
| JPH0517661U (en) | Fixing unit | |
| JP5390178B2 (en) | Electrophotographic apparatus having a web fixing device | |
| US6263181B1 (en) | Electrostatographic reproduction machine including a dual function fusing belt deskewing and oiling assembly | |
| JPH0641257Y2 (en) | Development device | |
| US7787814B2 (en) | Edge wear reducing pressure roller and an electrostatographic reproduction machine having same | |
| JP3356248B2 (en) | Image forming device | |
| JP2978367B2 (en) | Transfer device | |
| JP2535025Y2 (en) | Recording paper transport device | |
| JPH0455330Y2 (en) | ||
| JPS603197B2 (en) | Oil metering blade assembly | |
| US20060093417A1 (en) | Fixing device | |
| JPH11305611A (en) | Image forming device | |
| JP2550806Y2 (en) | Fixing device for image forming device | |
| JP2564748Y2 (en) | Fixing unit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A02 | Decision of refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A02 Effective date: 19970930 |