JP2803301B2 - Paper stack mechanism - Google Patents
Paper stack mechanismInfo
- Publication number
- JP2803301B2 JP2803301B2 JP2067869A JP6786990A JP2803301B2 JP 2803301 B2 JP2803301 B2 JP 2803301B2 JP 2067869 A JP2067869 A JP 2067869A JP 6786990 A JP6786990 A JP 6786990A JP 2803301 B2 JP2803301 B2 JP 2803301B2
- Authority
- JP
- Japan
- Prior art keywords
- sheet
- paper
- paddle
- attached
- driven pulley
- 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 - Fee Related
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2404/00—Parts for transporting or guiding the handled material
- B65H2404/10—Rollers
- B65H2404/11—Details of cross-section or profile
- B65H2404/111—Details of cross-section or profile shape
- B65H2404/1114—Paddle wheel
Landscapes
- Paper Feeding For Electrophotography (AREA)
- Pile Receivers (AREA)
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明は用紙スタック機構、さらに詳細には、感光体
上に形成さらた静電潜像を転写器によってカットシート
に転写した後、このカットシートを用紙排出部でスタッ
クする電子写真装置用々紙スタック機構に関する。Description: BACKGROUND OF THE INVENTION The present invention relates to a paper stack mechanism, and more particularly, to a method in which an electrostatic latent image formed on a photoreceptor is transferred to a cut sheet by a transfer device and then cut. The present invention relates to a sheet stack mechanism for an electrophotographic apparatus that stacks sheets at a sheet discharge unit.
本発明の説明に先立ち、従来形用紙スタック機構の概
略構成を第5図にもとづいて説明すると、同図におい
て、1は用紙搬送用パドル、6はパドル1を固定的に取
り付けた駆動軸、10は用紙受け台、11は受け台10にスタ
ックされた用紙(カットシート)を示している。Prior to the description of the present invention, the schematic structure of a conventional paper stack mechanism will be described with reference to FIG. 5. In FIG. 5, reference numeral 1 denotes a paper transport paddle, 6 denotes a drive shaft to which the paddle 1 is fixedly mounted, 10 Denotes a sheet tray, and 11 denotes sheets (cut sheets) stacked on the tray 10.
従来形用紙スタック機構の概略構成は以上のごときで
あるが、従来にあっては、既述のごとく、複数の用紙搬
送用パドル1が駆動軸6に固定的に取り付けられている
ため、印刷密度および印刷位置により、受け台10上でス
タックされた用紙11の堆積高さが不均一な場合には、複
数の用紙搬送用パドル1の内、用紙11に接触しないも
の、あるいは接触過上のものが生じ、安定した用紙搬送
力が得られず、その結果として、用紙の不揃い、あるい
は紙づまりを生じる不具合があった。The schematic configuration of the conventional paper stack mechanism is as described above. However, in the related art, as described above, since the plurality of paper transport paddles 1 are fixedly attached to the drive shaft 6, the print density is low. If the stacking height of the sheets 11 stacked on the receiving table 10 is not uniform due to the printing position, and among the plurality of sheet transport paddles 1, those that do not touch the sheet 11 or those that are over-contacted And a stable paper conveyance force cannot be obtained, and as a result, there has been a problem that the paper is irregular or the paper is jammed.
本発明の目的は、前記した従来技術の欠点をなくし、
印刷密度および印刷位置により用紙の堆積高さが不均一
な場合であっても、その用紙搬送力を常に一定に保ち、
用紙の不揃いや紙づまりをなくすことのできる用紙スタ
ック機構を提供することにある。An object of the present invention is to eliminate the above-mentioned disadvantages of the prior art,
Even if the stacking height of the paper is not uniform due to the printing density and printing position, always keep the paper transport force constant,
An object of the present invention is to provide a sheet stacking mechanism capable of eliminating irregularity of sheets and paper jam.
前記目的は、感光体上に形成された静電潜像を転写器
によってカットシートに転写した後、このカットシート
を用紙排出部でスタックする電子写真記録装置用々紙ス
タック機構において、前記用紙スタック機構を、電動機
に連動する駆動軸に取り付けられた複数の駆動プーリ
と、前記駆動プーリとベルトで連結されかつ、上下方向
に揺動可能に取り付けられた従動プーリと、前記従動プ
ーリに取り付けられた用紙搬送用パドルと、同じく従動
プーリに取り付けられかつ、前記パドルの用紙搬送力を
一定に保持するレベリングディスクとにより構成するこ
とによって達成される。The object is to provide a sheet stacking mechanism for an electrophotographic recording apparatus in which an electrostatic latent image formed on a photoreceptor is transferred to a cut sheet by a transfer device, and the cut sheet is stacked at a sheet discharge unit. A mechanism, a plurality of drive pulleys attached to a drive shaft linked to the electric motor, a driven pulley connected to the drive pulley by a belt, and attached to be able to swing up and down, and attached to the driven pulley. This is achieved by a paper transport paddle and a leveling disk that is also attached to a driven pulley and that keeps the paper transport force of the paddle constant.
しかして、前記構成よりなる本発明によれば、用紙搬
送用パドルを揺動可能にしたことにより、受け台上で用
紙の堆積高さが不均一であっても、前記用紙搬送用パド
ルは常に用紙と接触し、加えて、従動プーリには、前記
パドルの用紙搬送力を一定に保持するレベリングディス
クを取り付けることにより、パドルの用紙接触量を一定
に保つことができる。However, according to the present invention having the above-described configuration, the sheet transport paddle is made to be swingable, so that the sheet transport paddle is always kept even if the pile height of the sheets on the receiving table is not uniform. By contacting the driven pulley with a leveling disk that keeps the paper transport force of the paddle constant, the amount of paper contact of the paddle can be kept constant.
以下、本発明を、第1図〜第3図の一実施例にもとづ
いて説明すると、第1図は本発明に係る用紙スタック機
構の全体構成を示す斜視図、第2図は第1図に符号13で
示すレベリングディスクと用紙11との位置関係を示す側
面図、第3図は第1図および第2図に符号1で示す用紙
搬送用パドルの用紙接触量と用紙搬送力、および用紙間
の摩擦抵抗を説明するための拡大図である。Hereinafter, the present invention will be described with reference to one embodiment of FIGS. 1 to 3. FIG. 1 is a perspective view showing the overall configuration of a sheet stacking mechanism according to the present invention, and FIG. FIG. 3 is a side view showing the positional relationship between the leveling disc 13 and the sheet 11 indicated by reference numeral 13; FIG. 3 is a sheet contacting amount and sheet conveying force of the sheet conveying paddle indicated by reference numeral 1 in FIGS. 1 and 2; FIG. 4 is an enlarged view for explaining the frictional resistance of FIG.
また、第4図は用紙接触量と用紙搬送力との関係を示
す特性線図である。FIG. 4 is a characteristic diagram showing the relationship between the paper contact amount and the paper conveyance force.
第1図において、用紙搬送用パドル1は、従動軸2に
取り付けられており、従動プーリ3、丸ベルト4、およ
び駆動プーリ5を介して駆動軸6と連結している。また
駆動軸6は、プーリ7、およびベルト8を介して電動機
9に取り付けられている。したがって、電動機9の回転
は、駆動軸6、駆動プーリ5、従動プーリ4を介して用
紙搬送用パドル1に伝達される。印刷されて受け台10上
に排出された用紙(カットシート)11は、用紙搬送用パ
ドル1により搬送され、フロントガイド12に突き当たっ
て受け台10上で静止する。In FIG. 1, a paper transport paddle 1 is attached to a driven shaft 2 and is connected to a driving shaft 6 via a driven pulley 3, a round belt 4, and a driving pulley 5. The drive shaft 6 is attached to a motor 9 via a pulley 7 and a belt 8. Therefore, the rotation of the electric motor 9 is transmitted to the sheet transport paddle 1 via the drive shaft 6, the drive pulley 5, and the driven pulley 4. The paper (cut sheet) 11 printed and discharged onto the receiving table 10 is conveyed by the paper conveying paddle 1, abuts against the front guide 12, and stops on the receiving table 10.
また、第2図に明示するように、従動軸2には、用紙
搬送用パドル1の搬送力を一定に保持するレベリングデ
ィスク13が取り付けられており、このレベリングディス
ク13は、後述するバネ15により、常に用紙11上に接触し
ている。さらに、第3図に示す用紙搬送用パドル1の用
紙接触量lと用紙搬送力Fとは、第4図に示すような関
係にある。As shown in FIG. 2, the driven shaft 2 is provided with a leveling disk 13 for maintaining a constant conveying force of the sheet conveying paddle 1, and the leveling disk 13 is fixed by a spring 15 described later. , Is always in contact with the paper 11. Further, the paper contact amount 1 of the paper transport paddle 1 shown in FIG. 3 and the paper transport force F have a relationship as shown in FIG.
第4図中、斜線領域より小さい領域は、用紙搬送力F
<f(第3図に示す用紙摩擦抵抗)となって、用紙搬送
力Fが不足となり、他方、第4図の斜線領域より大きい
領域は、前記用紙搬送力Fと用紙摩擦抵抗fとがF>f
となって、用紙搬送力Fが過剰となり、用紙11が用紙搬
送用パンドル1とフロントガイド12との間で屈曲するた
め、前記用紙搬送力Fを適切な大きさに保持するには、
レベリングディスク13の径を規定して用紙搬送用パドル
1の用紙接触量lを斜線領域内に設定すればよい。In FIG. 4, the area smaller than the hatched area is the sheet conveyance force F.
<F (paper frictional resistance shown in FIG. 3), and the paper transporting force F becomes insufficient. On the other hand, in an area larger than the hatched area in FIG. > F
Then, the sheet conveying force F becomes excessive, and the sheet 11 bends between the sheet conveying pandle 1 and the front guide 12, so that the sheet conveying force F is held at an appropriate size.
The diameter of the leveling disk 13 may be specified and the paper contact amount 1 of the paper transport paddle 1 may be set within the shaded area.
第1図および第2図に戻って、用紙搬送用パドル1
は、従動プーリ4、連結プレート14、および駆動プーリ
5を介して、駆動軸6の軸心を中心に揺動可能に取り付
けられている。また、第2図において、連結プレート14
は、バネ15によって釣り下げられており、このバネ15
は、用紙11の厚みに応じて連結プレート14を上下に傾動
させ、レベリングディスク13を常に用紙11上に接触させ
ている。Returning to FIG. 1 and FIG.
Is mounted to be swingable about the axis of the drive shaft 6 via the driven pulley 4, the connecting plate 14, and the drive pulley 5. Also, in FIG.
Is suspended by the spring 15 and this spring 15
In the first embodiment, the connection plate 14 is tilted up and down according to the thickness of the sheet 11 so that the leveling disc 13 is always in contact with the sheet 11.
本発明は以上のごときであり、図示実施例の説明から
も明らかなように、本発明によれば、用紙搬送用パドル
1を揺動可能にしたことにより、受け台10上で用紙11の
堆積高さが不均一であっても、前記用紙搬送用パドル1
に常に用紙11と接触し、加えて、従動プーリ3には、前
記パドル1の用紙搬送力を一定に保持するレベリングデ
ィスク13が取り付けられており、パドルの用紙接触量を
一定に保つことができる。The present invention is as described above. As is clear from the description of the illustrated embodiment, according to the present invention, the sheet transport paddle 1 is made to be swingable, so that the sheet 11 is deposited on the receiving table 10. Even if the height is uneven, the paper transport paddle 1
In addition, the driven pulley 3 is provided with a leveling disk 13 for keeping the paper transport force of the paddle 1 constant, so that the amount of paper contact of the paddle can be kept constant. .
以上、要するに、本発明によれば、印刷密度および印
刷位置により用紙11の堆積高さが不均一な場合であって
も、その用紙搬送力を常に一定に保ち、用紙11の不揃い
や紙づまりをなくすことができる。In summary, according to the present invention, even when the stacking height of the paper 11 is not uniform due to the printing density and the printing position, the paper conveying force is always kept constant, and irregularity of the paper 11 and paper jam are eliminated. be able to.
第1図は〜第3図は本発明に係る電子写真装置用用紙ス
タックの一実施例を示し、第1図はその全体構成を示す
斜視図、第2図は第1図に符号13で示すレベリングディ
スクと用紙11との位置関係を示す側面図、第3図は第1
図および第2図に符号1で示す用紙搬送用パドルの用紙
接触量と用紙搬送力、および用紙間の摩擦抵抗を説明す
るための拡大図、第4図は用紙接触量と用紙搬送力との
関係を示す特性線図、第5図は従来形用紙スタッカ機構
における用紙搬送用パドル1と用紙11との取合いを示す
概略正面図である。 1は用紙搬送用パドル、2は従動軸、3は従動プーリ、
4は丸ベルト、5は駆動プーリ、6は駆動軸、9は電動
機、10は受け台、11は用紙(カットシート)、13はレベ
リングディスク、14は連結プレート。FIGS. 1 to 3 show an embodiment of a paper stack for an electrophotographic apparatus according to the present invention, FIG. 1 is a perspective view showing the overall configuration, and FIG. 2 is shown by reference numeral 13 in FIG. FIG. 3 is a side view showing the positional relationship between the leveling disk and the sheet 11, and FIG.
2 and FIG. 2 are enlarged views for explaining the sheet contact amount and the sheet conveying force of the sheet conveying paddle denoted by reference numeral 1 and the frictional resistance between the sheets. FIG. 4 is a graph showing the relationship between the sheet contact amount and the sheet conveying force. FIG. 5 is a schematic front view showing the relationship between the paper transport paddle 1 and the paper 11 in the conventional paper stacker mechanism. 1 is a paper transport paddle, 2 is a driven shaft, 3 is a driven pulley,
4 is a round belt, 5 is a drive pulley, 6 is a drive shaft, 9 is an electric motor, 10 is a pedestal, 11 is a sheet (cut sheet), 13 is a leveling disk, and 14 is a connection plate.
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 実開 昭64−14767(JP,U) 実開 平1−58560(JP,U) (58)調査した分野(Int.Cl.6,DB名) B65H 31/36 B65H 9/00──────────────────────────────────────────────────続 き Continuation of the front page (56) References Japanese Utility Model Sho 64-14767 (JP, U) Japanese Utility Model Utility Model Hei 1-58560 (JP, U) (58) Fields surveyed (Int. Cl. 6 , DB name) B65H 31/36 B65H 9/00
Claims (1)
よってカットシートに転写した後、このカットシートを
用紙排出部でスタックする電子写真装置用々紙スタック
機構において、電動機に連動する駆動軸に取り付けられ
た複数の駆動プーリと、前記駆動プーリとベルトで連結
されかつ、上下方向に揺動可能に取り付けられた従動プ
ーリと、前記従動プーリに取り付けられた用紙搬送用パ
ドルと、同じく従動プーリに取り付けられかつ、前記パ
ドル用紙搬送力を一定に保持するレベリングディスクと
からなることを特徴とする用紙スタック機構。An electrophotographic apparatus stackable mechanism for transferring an electrostatic latent image formed on a photoreceptor to a cut sheet by a transfer device and stacking the cut sheet at a sheet discharge section, interlocking with an electric motor. A plurality of drive pulleys attached to the drive shaft to be driven, a driven pulley connected to the drive pulley by a belt, and attached to be swingable in the vertical direction, and a paper transport paddle attached to the driven pulley, And a leveling disk attached to the driven pulley and holding the paddle sheet conveying force constant.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2067869A JP2803301B2 (en) | 1990-03-16 | 1990-03-16 | Paper stack mechanism |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2067869A JP2803301B2 (en) | 1990-03-16 | 1990-03-16 | Paper stack mechanism |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH03267265A JPH03267265A (en) | 1991-11-28 |
JP2803301B2 true JP2803301B2 (en) | 1998-09-24 |
Family
ID=13357366
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2067869A Expired - Fee Related JP2803301B2 (en) | 1990-03-16 | 1990-03-16 | Paper stack mechanism |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP2803301B2 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP5716405B2 (en) * | 2011-01-11 | 2015-05-13 | コニカミノルタ株式会社 | Sheet processing device |
-
1990
- 1990-03-16 JP JP2067869A patent/JP2803301B2/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
JPH03267265A (en) | 1991-11-28 |
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