JPH04223936A - Envelope feeder - Google Patents
Envelope feederInfo
- Publication number
- JPH04223936A JPH04223936A JP2405673A JP40567390A JPH04223936A JP H04223936 A JPH04223936 A JP H04223936A JP 2405673 A JP2405673 A JP 2405673A JP 40567390 A JP40567390 A JP 40567390A JP H04223936 A JPH04223936 A JP H04223936A
- Authority
- JP
- Japan
- Prior art keywords
- envelope
- paper
- passing
- paper passing
- transfer
- 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
- 230000015572 biosynthetic process Effects 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 4
- 108091008695 photoreceptors Proteins 0.000 description 3
- 238000000926 separation method Methods 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
Landscapes
- Handling Of Cut Paper (AREA)
- Paper Feeding For Electrophotography (AREA)
- Sheets, Magazines, And Separation Thereof (AREA)
Abstract
Description
【０００１】0001
【産業上の利用分野】本発明は電子写真方式による画像
形成装置における封筒給紙装置に関し、特に封筒のフラ
ップ部によるジャムを低減できる封筒給紙装置に関する
。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an envelope feeding device for an electrophotographic image forming apparatus, and more particularly to an envelope feeding device that can reduce jams caused by envelope flaps.
【０００２】0002
【従来の技術】従来、電子写真プロセスを利用した複写
装置、プリンタ等の画像形成装置が多用されているが、
この画像形成装置は普通紙、ハガキ、封筒等の転写紙を
、図５に示すような所定の給紙カセット１２に装填し、
この給紙カセットから転写紙１３を給紙・搬送するよう
になっている。2. Description of the Related Art Conventionally, image forming apparatuses such as copying machines and printers that utilize electrophotographic processes have been widely used.
This image forming apparatus loads transfer paper such as plain paper, postcards, envelopes, etc. into a predetermined paper feed cassette 12 as shown in FIG.
Transfer paper 13 is fed and conveyed from this paper feed cassette.
【０００３】図４はこの種の従来の画像形成装置の一例
を示す概略構成図である。同図において、画像形成装置
本体１０のピックアップコロ１１によって、給紙装置で
ある給紙カセット１２から給送された転写紙１３は、レ
ジストローラ対１４によってタイミングをとられて感光
体ドラム１５に搬送される。感光体ドラム１５は時計方
向に回転駆動され、その際、帯電装置１６によって表面
を帯電される。そして、光学ユニット１７から照射され
る光によって感光体ドラム１５上に静電潜像が形成され
る。この潜像は現像器１８を通るときトナーによって可
視像化される。この可視像化されたトナー像は、転写チ
ャージャ１９によって感光体ドラム１５に搬送された転
写紙１３に転写される。トナー転写後の転写紙１３は、
分離チャージャ２０によって感光体ドラム１５から分離
され、通紙ガイドである転写ガイド板２１にガイドされ
て搬送ユニット２２に送られる。搬送ユニット２２は転
写紙１３を定着器２３に搬送し、定着器２３によって転
写紙にトナー像を定着させる。そして、定着器２３を通
過した転写紙１３は、排紙ローラ２４によって機外に排
紙される。FIG. 4 is a schematic diagram showing an example of a conventional image forming apparatus of this type. In the figure, a transfer paper 13 is fed by a pickup roller 11 of an image forming apparatus main body 10 from a paper feed cassette 12, which is a paper feed device, and is conveyed to a photoreceptor drum 15 with timing set by a pair of registration rollers 14. be done. The photosensitive drum 15 is rotationally driven in a clockwise direction, and at this time, the surface of the photosensitive drum 15 is charged by a charging device 16 . Then, an electrostatic latent image is formed on the photoreceptor drum 15 by the light emitted from the optical unit 17 . This latent image is made visible by toner as it passes through developer 18. This visualized toner image is transferred onto the transfer paper 13 which is conveyed to the photosensitive drum 15 by the transfer charger 19. The transfer paper 13 after toner transfer is
The sheet is separated from the photoreceptor drum 15 by the separation charger 20, guided by a transfer guide plate 21 serving as a paper passing guide, and sent to the conveyance unit 22. The conveyance unit 22 conveys the transfer paper 13 to the fixing device 23, and the fixing device 23 fixes the toner image on the transfer paper. The transfer paper 13 that has passed through the fixing device 23 is then discharged to the outside of the machine by a paper discharge roller 24.
【０００４】このような従来の画像形成装置にあっては
、普通紙を通紙する場合、転写紙サイズに応じて給紙・
搬送の基準を動かさなくて済むように、転写紙のセンタ
が基準として設定されている。ここで、前記転写ガイド
板２１は図６のように示される。図において、通紙ガイ
ドである転写ガイド板２１は転写チャージャ１９と一体
に構成されており、分離チャージャ２０によるコロナ放
電が通過する空洞部３０が形成されている。通紙基準３
１は転写紙のセンタに設定され、この通紙基準３１に対
して斜めの通紙リブ３２が左右対称に所定の間隔をもっ
て複数形成されている。この通紙リブ３２は、普通紙通
紙に際して紙の耳部が引っ掛からないように、通紙方向
に対して所定の角度をもって取り付けられている。なお
、このようなセンタ基準の給紙カセット１２は、図５に
示すように、転写紙サイズにかかわりなく同一のカセッ
ト幅Ｄに統一されている。[0004] In such a conventional image forming apparatus, when passing plain paper, the paper feed and feeding speed are adjusted according to the size of the transfer paper.
The center of the transfer paper is set as the reference so that there is no need to move the transport reference. Here, the transfer guide plate 21 is shown as shown in FIG. In the figure, a transfer guide plate 21 serving as a paper passing guide is constructed integrally with a transfer charger 19, and has a cavity 30 through which corona discharge from the separation charger 20 passes. Paper passing standard 3
1 is set at the center of the transfer paper, and a plurality of paper passing ribs 32 are formed symmetrically with respect to this paper passing reference 31 at predetermined intervals. The paper passing rib 32 is attached at a predetermined angle with respect to the paper passing direction so that the edges of the paper do not get caught when passing plain paper. Note that, as shown in FIG. 5, such a center-based paper feed cassette 12 has the same cassette width D regardless of the transfer paper size.
【０００５】[0005]
【発明が解決しようとする課題】しかしながら、転写紙
センタを通紙基準とする従来の給紙カセット１２により
封筒３３を給紙すると、通紙基準と平行な封筒端部を中
心に折り曲げられたフラップ部３４の先端部分、特に角
部分が、図７に示すように、前記通紙リブ３２に引っ掛
かりジャムになってしまうという問題があった。すなわ
ち、フラップ部３４は、図４に示すレジストローラ対１
４を通過した直後では閉じ気味であるが、搬送されるに
したがって開き気味になる。通紙リブ３２はフラップ部
３４をあける方向に形成されているため、フラップ部３
４が転写ガイド板２１に搬送された時点で、通紙リブ３
２に引っ掛かってしまう。[Problems to be Solved by the Invention] However, when the envelope 33 is fed by the conventional paper feed cassette 12 in which the transfer paper center is the paper passing reference, the flap is bent around the edge of the envelope parallel to the paper passing reference. As shown in FIG. 7, there is a problem in that the tip portion of the portion 34, particularly the corner portion, gets caught on the paper passing rib 32, resulting in a jam. That is, the flap portion 34 is connected to the registration roller pair 1 shown in FIG.
Immediately after passing through 4, it is a little closed, but as it is conveyed, it is a little open. Since the paper passage rib 32 is formed in the direction that opens the flap part 34, the flap part 3
4 is conveyed to the transfer guide plate 21, the paper passing rib 3
I'm stuck on 2.
【０００６】そこで、本発明は、フラップ部の先端部分
が通紙リブと接触しない位置に封筒を通紙させることに
より、封筒のジャムを減少させる封筒給紙装置を提供す
ることを目的としている。SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide an envelope feeding device that reduces envelope jams by passing envelopes at a position where the tip of the flap does not come into contact with the paper passing rib.
【０００７】[0007]
【課題を解決するための手段】本発明は、上記目的を達
成するために、通紙の基準を転写紙のセンタに設定し、
この通紙基準に対して斜めの通紙リブが左右対称に複数
形成された通紙ガイドを有する画像形成装置に対して封
筒を給紙する封筒給紙装置において、前記通紙基準と平
行な封筒端部を中心に折り曲げられたフラップ部の先端
部分が前記通紙基準の両側に形成された１番目の通紙リ
ブの間を通過するように、封筒の給紙基準を前記通紙基
準からずらして設定したことを特徴とするものである。[Means for Solving the Problems] In order to achieve the above object, the present invention sets the paper passing reference to the center of the transfer paper,
In an envelope feeding device that feeds envelopes to an image forming apparatus having a paper passing guide in which a plurality of paper passing ribs are formed symmetrically with respect to the paper passing reference, an envelope parallel to the paper passing reference is provided. Shifting the paper feeding reference of the envelope from the paper passing reference so that the tip of the flap portion bent around the end portion passes between first paper passing ribs formed on both sides of the paper passing reference. The feature is that it is set as follows.
【０００８】[0008]
【作用】上記構成を有する本発明においては、封筒の給
紙基準を通紙基準からずらし、フラップ部の先端部分が
通紙基準の両側に形成された通紙リブの間を通過するよ
うに給紙する。[Operation] In the present invention having the above configuration, the envelope paper feeding reference is shifted from the paper passing reference, and the envelope is fed so that the tip of the flap part passes between the paper passing ribs formed on both sides of the paper passing reference. Paper.
【０００９】[0009]
【実施例】以下、本発明を実施例に基づいて説明する。
図１は本発明の一実施例に係る封筒給紙装置を示す概略
斜視図である。なお、本実施例において上述例と同一の
構成については、同一符号を付してその具体的な説明を
省略する。EXAMPLES The present invention will be explained below based on examples. FIG. 1 is a schematic perspective view showing an envelope feeding device according to an embodiment of the present invention. In this embodiment, the same components as those in the above-mentioned example are designated by the same reference numerals, and detailed explanation thereof will be omitted.
【００１０】図１において、封筒給紙装置である給紙カ
セット４０は、所定のカセット幅Ｄに形成されたケース
４１内に封筒３３が収納される。封筒３３は、サイドス
トッパ４２、４３、およびエンドストッパ４４により収
納位置が位置決めされている。この収納位置は、フラッ
プ部３４の折り曲げ幅によって適宜最適位置が設定され
る。すなわち、図２に示すように、給紙カセット４０か
ら給紙・搬送された封筒３３のフラップ部３４の先端部
、特に角部分が、通紙基準３１の両側に形成された１番
目の通紙リブ３２ａ、３２ｂの間を通過するように設定
する。このために、封筒３３のカセット収納位置は、封
筒中心である給紙基準４５が通紙基準３１とずれた位置
になるように位置決めされる。この結果、封筒３３が転
写ガイド板２１を通過する際に、図３に示すように、フ
ラップ部３４の先端角部分が通紙リブ３２ａに接触しな
いため、フラップ部３４が開くことはない。In FIG. 1, a paper feed cassette 40, which is an envelope paper feeder, stores envelopes 33 in a case 41 formed to have a predetermined cassette width D. The storage position of the envelope 33 is determined by side stoppers 42, 43 and an end stopper 44. The optimal storage position is appropriately set depending on the bending width of the flap portion 34. That is, as shown in FIG. 2, the leading edge, especially the corner portion, of the flap portion 34 of the envelope 33 fed and conveyed from the paper feed cassette 40 is aligned with the first paper passing point formed on both sides of the paper passing reference 31. It is set to pass between the ribs 32a and 32b. For this reason, the cassette storing position of the envelope 33 is determined so that the paper feeding reference 45, which is the center of the envelope, is shifted from the paper passing reference 31. As a result, when the envelope 33 passes through the transfer guide plate 21, as shown in FIG. 3, the tip corner portion of the flap portion 34 does not come into contact with the paper passing rib 32a, so the flap portion 34 does not open.
【００１１】このように、本実施例においては、封筒３
３のフラップ部３４が開かない位置に封筒３３を搬送す
ることができるので、転写ガイド板２１の通紙リブ３２
に引っ掛からず、良好な封筒通紙性能を得ることができ
る。また、給紙基準４５のずれ量はそれほど大きなもの
とはならないので、図４に示したピックアップコロ１１
等の位置変更なしでも通紙可能であり、普通紙通紙と共
通な部品で通紙が可能である。In this way, in this embodiment, the envelope 3
Since the envelope 33 can be transported to a position where the flap part 34 of No. 3 does not open, the paper passing rib 32 of the transfer guide plate 21
It is possible to obtain good envelope passing performance without getting caught in the envelope. In addition, since the amount of deviation of the paper feeding reference 45 is not so large, the pickup roller 11 shown in FIG.
It is possible to pass paper without changing the position of paper, etc., and it is possible to pass paper using the same parts as those used for passing plain paper.
【００１２】なお、通紙ガイドとして転写ガイド板２１
を例示したが、例えば搬送ガイド板、排出ガイド板等に
対しても、本発明が有効であることは当然のことである
。
また、各種封筒に合わせてサイドストッパ４２、４３、
およびエンドストッパ４４の位置を可変するよう構成し
ても構わない。Note that a transfer guide plate 21 is used as a paper passing guide.
Although the present invention is illustrated as an example, it is a matter of course that the present invention is also effective for, for example, a conveyance guide plate, a discharge guide plate, etc. In addition, side stoppers 42, 43,
Also, the position of the end stopper 44 may be changed.
【００１３】[0013]
【発明の効果】以上説明したように、本発明に係る封筒
給紙装置によれば、フラップ部の先端部分が通紙リブと
接触しない位置に封筒を通紙させることができ、封筒の
ジャムを減少させることができる。As explained above, according to the envelope feeding device according to the present invention, envelopes can be passed to a position where the tip of the flap part does not come into contact with the paper passing rib, thereby preventing envelope jams. can be reduced.
【図１】本発明の一実施例に係る封筒給紙装置を示す概
略斜視図。FIG. 1 is a schematic perspective view showing an envelope feeding device according to an embodiment of the present invention.
【図２】図１の給紙カセットにより給紙された封筒が転
写ガイド板上を通過する際の状態図。FIG. 2 is a state diagram when an envelope fed by the paper feed cassette of FIG. 1 passes over a transfer guide plate.
【図３】図２の拡大平面図。FIG. 3 is an enlarged plan view of FIG. 2;
【図４】従来の画像形成装置の一例を示す概略構成図。FIG. 4 is a schematic configuration diagram showing an example of a conventional image forming apparatus.
【図５】従来の給紙カセットを示す斜視図。FIG. 5 is a perspective view showing a conventional paper feed cassette.
【図６】図１に示す転写ガイド板の拡大斜視図。FIG. 6 is an enlarged perspective view of the transfer guide plate shown in FIG. 1.
【図７】転写ガイド板上を通過する封筒の状態説明図。FIG. 7 is an explanatory diagram of the state of the envelope passing over the transfer guide plate.
３１ 通紙基準
３３ 封筒
３４ フラップ部
４０ 給紙カセット（封筒給紙装置）４５
給紙基準31 Paper passing standard 33 Envelope 34 Flap section 40 Paper feed cassette (envelope paper feed device) 45
Paper feed standards
Claims (1)
、この通紙基準に対して斜めの通紙リブが左右対称に複
数形成された通紙ガイドを有する画像形成装置に対して
封筒を給紙する封筒給紙装置において、前記通紙基準と
平行な封筒端部を中心に折り曲げられたフラップ部の先
端部分が前記通紙基準の両側に形成された１番目の通紙
リブの間を通過するように、封筒の給紙基準を前記通紙
基準からずらして設定したことを特徴とする封筒給紙装
置。Claim 1: The paper passing reference is set at the center of the transfer paper, and an envelope is attached to an image forming apparatus having a paper passing guide in which a plurality of paper passing ribs are formed symmetrically with respect to the paper passing reference. In an envelope feeding device that feeds paper, the tip of a flap bent around an end of the envelope parallel to the paper passing reference is between the first paper passing ribs formed on both sides of the paper passing reference. 1. An envelope feeding device characterized in that a paper feeding reference for the envelope is set to be shifted from the paper passing reference so that the envelope passes through the envelope.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2405673A JPH04223936A (en) | 1990-12-25 | 1990-12-25 | Envelope feeder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2405673A JPH04223936A (en) | 1990-12-25 | 1990-12-25 | Envelope feeder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH04223936A true JPH04223936A (en) | 1992-08-13 |
Family
ID=18515283
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2405673A Pending JPH04223936A (en) | 1990-12-25 | 1990-12-25 | Envelope feeder |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH04223936A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0961180A2 (en) * | 1998-05-29 | 1999-12-01 | Tektronix, Inc. | Envelope transport structure |
| US8657450B2 (en) | 2010-07-21 | 2014-02-25 | Ricoh Company, Ltd. | Projection optical system and image projection device |
| JP2016124690A (en) * | 2015-01-07 | 2016-07-11 | キヤノン株式会社 | Image forming device |
-
1990
- 1990-12-25 JP JP2405673A patent/JPH04223936A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0961180A2 (en) * | 1998-05-29 | 1999-12-01 | Tektronix, Inc. | Envelope transport structure |
| EP0961180A3 (en) * | 1998-05-29 | 2001-06-20 | Xerox Corporation | Envelope transport structure |
| US8657450B2 (en) | 2010-07-21 | 2014-02-25 | Ricoh Company, Ltd. | Projection optical system and image projection device |
| JP2016124690A (en) * | 2015-01-07 | 2016-07-11 | キヤノン株式会社 | Image forming device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US3944212A (en) | Sheet reversing mechanism | |
| US5233400A (en) | Wrinkle preventing registration mechanism | |
| JPH0672641A (en) | Sheet collecting and feeding-out device | |
| JPH04223936A (en) | Envelope feeder | |
| JPH05204264A (en) | Static electrophotographic copying machine | |
| JP2707449B2 (en) | Image forming device | |
| JPH05323814A (en) | Electrophotographic device | |
| US4769670A (en) | Transfer sheet guiding device | |
| JP3317514B2 (en) | Electrophotographic equipment | |
| US6941104B2 (en) | Carrying apparatus and image forming apparatus | |
| JPH05281797A (en) | Process cartridge for image forming device | |
| JPH0228447A (en) | Conveying device for paper of which one side has been run through copying machine | |
| JP2941360B2 (en) | Paper feeder | |
| JP2780213B2 (en) | Image forming device | |
| JP3086393B2 (en) | Copier | |
| JP3815533B2 (en) | Image forming apparatus | |
| JP2763414B2 (en) | Paper feeder and image forming apparatus | |
| JPS61101339A (en) | Sheet receiving/refeeding unit | |
| JP3086394B2 (en) | Copier | |
| JPH08225218A (en) | Image forming device | |
| JPH0466427A (en) | Sheet carrying device | |
| JP2004043083A (en) | Image forming device | |
| JPH04338788A (en) | Transfer material transporting device | |
| JPH0733308A (en) | Curling straightening device and image forming device | |
| JPH01167164A (en) | Sheet uncurler |