JPH025651B2 - - Google Patents
Info
- Publication number
- JPH025651B2 JPH025651B2 JP59005940A JP594084A JPH025651B2 JP H025651 B2 JPH025651 B2 JP H025651B2 JP 59005940 A JP59005940 A JP 59005940A JP 594084 A JP594084 A JP 594084A JP H025651 B2 JPH025651 B2 JP H025651B2
- Authority
- JP
- Japan
- Prior art keywords
- roller
- double
- friction
- periphery
- coefficient
- 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 - Lifetime
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
- B65H3/00—Separating articles from piles
- B65H3/46—Supplementary devices or measures to assist separation or prevent double feed
- B65H3/52—Friction retainers acting on under or rear side of article being separated
- B65H3/5246—Driven retainers, i.e. the motion thereof being provided by a dedicated drive
- B65H3/5253—Driven retainers, i.e. the motion thereof being provided by a dedicated drive the retainers positioned under articles separated from the top of the pile
- B65H3/5261—Retainers of the roller type, e.g. rollers
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Sheets, Magazines, And Separation Thereof (AREA)
Description
【発明の詳細な説明】
本発明は、光学文字読取装、光学マーク読取装
置等に使用される帳票二枚送り防止機構に関す
る。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a double-sheet feed prevention mechanism used in optical character reading devices, optical mark reading devices, and the like.
従来の二枚送り防止機構を示す、第１図、第２
図および第３図において、帳票送り出しローラ１
は、周囲摩擦係数の高い物質（斜線部）でできて
おり、外部から矢印ａ方向に回転させられてい
る。帳票二枚送り防止ローラ２は、周囲摩擦係数
の低い物質（点々部）でできており、スプリング
６により、支点５を有するレバー４を介して帳票
送り出しローラ１に押しつけられており、外部か
ら矢印ｂ方向に回転させられている。スプリング
６は、一端はレバー４に接続され、他端はスタツ
ド７に接続されている。 Figures 1 and 2 show the conventional double-sheet feed prevention mechanism.
In the figure and FIG. 3, the form feed roller 1
is made of a material with a high peripheral friction coefficient (shaded area), and is rotated from the outside in the direction of arrow a. The double-sheet feed prevention roller 2 is made of a material with a low peripheral friction coefficient (dotted parts), and is pressed against the form feed roller 1 by a spring 6 via a lever 4 having a fulcrum 5. It is rotated in direction b. The spring 6 is connected to the lever 4 at one end and to the stud 7 at the other end.
第１図でガイド８に沿つて印ｃ方向から送られ
てくる二枚重つた帳票３，３′は、次のような原
理によつて二枚送り防止が行なわれる。 In FIG. 1, double-sheeted forms 3 and 3' fed along guide 8 from the direction of mark c are prevented from being fed double-sheeted based on the following principle.
帳票送り出しローラ１と帳票３との摩擦係数を
μ、帳票二枚送り防止ローラ２と帳票３′との摩
擦係数をμ2、帳票３と帳票３′との摩擦係数をμ3
とすると、一般に、μ1＞μ2＞μ3であるため、ガイ
ド８に沿つて、矢印ｃ方向から送られてきた帳票
３，３′は、帳票送り出しローラ１と、二枚送り
防止ローラ２との接点に達すると、帳票３は、帳
票送り出しローラ１によつて、第２図に示すよう
になお一層矢印ｃ方向に送られる。下側の帳票
３′は、μ2＞μ3のため、矢印ｃ方向に送られずに、
二枚送り防止ローラ２の手前で逆方向におしもど
され、二枚送り防止が行なわれる。 The friction coefficient between the form feed roller 1 and the form 3 is μ, the friction coefficient between the double sheet feeding prevention roller 2 and the form 3' is μ 2 , and the friction coefficient between the form 3 and the form 3' is μ 3
Then, in general, μ 1 > μ 2 > μ 3 , so the documents 3 and 3' sent from the direction of arrow c along the guide 8 are transferred to the document feed roller 1 and the double-sheet feed prevention roller 2. When the document 3 reaches the contact point with the document feed roller 1, the document 3 is further fed in the direction of the arrow c as shown in FIG. 2 by the document feed roller 1. Since μ 2 >μ 3 , the lower form 3' is not sent in the direction of arrow c.
It is returned in the opposite direction before the double-sheet feed prevention roller 2, and double-sheet feed prevention is performed.
しかし、二枚送り防止ローラ２の表面は、使用
してくるにしたがつて、紙粉や、鉛筆等の汚れが
ついて、次第にμ2の値が低下し、μ2とμ3とが等し
く、または、μ2＞μ3となることがある。このよう
になると、第３図に示すように、二枚目の帳票
３′が二枚送り防止ローラ２により、矢印ｃ方向
とは逆方向におしもどされずに、二枚同時に送ら
れてしまうという欠点があつた。 However, as the double-feed prevention roller 2 is used, the surface gets dirty with paper powder, pencils, etc., and the value of μ 2 gradually decreases, and μ 2 and μ 3 become equal. Alternatively, μ 2 > μ 3 may be satisfied. In this case, as shown in Fig. 3, the second sheet 3' is not returned by the double-sheet feeding prevention roller 2 in the direction opposite to the direction of arrow c, but is sent two sheets at the same time. There was a drawback.
従つて本発明の目的は、安定した二枚送り防止
機能を果す、帳票二枚送り防止機構を提供するこ
とにある。 SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a mechanism for preventing double sheet feeding, which performs a stable double sheet feeding prevention function.
本発明によれば、帳票二枚送り防止ローラを低
摩擦係数の物質が外周に設けられた第一のローラ
部と、第一のローラ部よりも大きな直径を有し高
摩擦係数の物質が外周に設けられた第二のローラ
部とで構成したことを特徴とする帳票二枚送り出
し防止機構が得られる。 According to the present invention, the double-sheet feed prevention roller includes a first roller portion having a material with a low friction coefficient on the outer periphery, and a material having a larger diameter than the first roller portion and having a high friction coefficient on the outer periphery. A mechanism for preventing two sheets from being sent out is obtained.
次に本発明の一実施例を示す図面を参照して本
発明を詳細に説明する。第４図〜第７図におい
て、帳票送り出しローラ１′は、従来の帳票送り
出しローラ１と同様に周囲が摩擦係数の高い物質
（斜線部）でできており、外部から矢印ａ方向に
回転させられている。 Next, the present invention will be described in detail with reference to the drawings showing one embodiment of the present invention. 4 to 7, the form feed roller 1', like the conventional form feed roller 1, is made of a material with a high friction coefficient (shaded area) around its periphery, and is rotated from the outside in the direction of arrow a. ing.
帳票二枚送り防止ローラ２′は、周囲が摩擦係
数の低い物質でできているローラ部１０１（点々
部）と、周囲が高い摩擦係数を有する物質（斜線
部）で形成され、ローラ部１０１の直径より、若
干大きい直径を有するローラ部１０２（斜線部）
とでできている。ローラ部１０１の周囲だけが、
スプリング６により、支点５を有するレバー４を
介して、帳票送り出しローラ１′に押しつけられ
ており、矢印ｂ方向に外部から回転させられてい
る。 The double-sheet feed prevention roller 2' is formed of a roller portion 101 (dotted portions) whose periphery is made of a material with a low coefficient of friction, and a material whose periphery is made of a material with a high friction coefficient (shaded portions). Roller portion 102 (hatched portion) having a diameter slightly larger than the diameter
It is made of. Only the area around the roller part 101 is
A spring 6 presses against the form feed roller 1' via a lever 4 having a fulcrum 5, and rotates it from the outside in the direction of arrow b.
ガイド８に沿つて、矢印ｃ方向に送られてきた
二枚重つた帳票は、下側の帳票３′が初めに高摩
擦係数を有するローラ部１０２の周囲に接し、第
６図に示すように押し止められる。 The double stacked form sent along the guide 8 in the direction of the arrow c, the lower form 3' first comes into contact with the periphery of the roller section 102 having a high coefficient of friction, as shown in FIG. be held back.
上側の帳票３は、そのまま矢印ｃ方向に送ら
れ、ローラ１′とローラ２′とが接している位置ｄ
に達し、ローラ１′とローラ２′のローラ部１０１
とにより、積極的に矢印ｃ方向に送られる。 The upper form 3 is sent as it is in the direction of arrow c and reaches position d where roller 1' and roller 2' are in contact.
reaches the roller portion 101 of roller 1' and roller 2'.
As a result, it is actively sent in the direction of arrow c.
このとき、ローラ２′のローラ部１０２は、単
独で相対するローラがないので、第７図に示すよ
うに帳票３に若干の変形を与えるだけで、積極的
な戻し力を作用させることはできない。 At this time, since the roller portion 102 of the roller 2' is independent and has no opposing roller, it only slightly deforms the form 3 as shown in FIG. 7, and cannot apply any positive return force. .
以上のようにローラ２′は高摩擦係数を有する
ローラ部１０２があるため、ローラ部１０１が、
紙粉や、えんぴつ等の汚れで摩擦係数が変化し
て、充分な戻し力を与えることができなくても、
ローラ部１０２は安定した、帳票二枚送り防止が
できる。 As mentioned above, since the roller 2' has the roller part 102 having a high coefficient of friction, the roller part 101 is
Even if the coefficient of friction changes due to paper dust, pencil stains, etc., and it is not possible to provide sufficient return force,
The roller section 102 can stably prevent double sheet feeding.
本発明は以上説明したように、ローラ２′にロ
ーラ部１０２を設けることにより、帳票の二枚送
り防止を安定させることができる。 As explained above, in the present invention, by providing the roller portion 102 on the roller 2', it is possible to stably prevent double sheet feeding of the form.
第１図、第２図および第３図は従来の帳票二枚
送り出し防止機構の一例を示す、概略図であり、
第１図は、帳票の二枚送りを防止する前の状態、
第２図は、帳票の二枚送り防止している状態、第
３図は、帳票の二枚送り防止できなかつた状態を
示す。第４図、第５図、第６図および第７図は、
本発明の一実施例の概略図であり、第４図は帳票
の二枚送り防止する前の状態を示す図、第５図は
第４図のＡ−Ａ断面図、第６図は帳票の二枚送り
防止している状態を示す図、第７図は第６図のＢ
−Ｂ断面図である。
１，１′……帳票送り出しローラ、２，２′……
帳票二枚送り出し防止ローラ、３，３′……帳票、
４……レバー、５……支点、６……スプリング、
７……スタツド、８……ガイド、１０１……低マ
サツ係数ローラ部（ローラ部イ）、１０２……高
マサツ係数ローラ部（ローラ部ロ）。
FIG. 1, FIG. 2, and FIG. 3 are schematic diagrams showing an example of a conventional mechanism for preventing two sheets from being sent out.
Figure 1 shows the state before double-sheet feeding of forms is prevented.
FIG. 2 shows a state where double-sheet feeding of a form is prevented, and FIG. 3 shows a state where double-sheet feeding of a form cannot be prevented. Figures 4, 5, 6 and 7 are
FIG. 4 is a diagram showing a state before double sheet feeding of a form is prevented; FIG. 5 is a sectional view taken along line A-A in FIG. 4; and FIG. A diagram showing the state in which double-sheet feeding is prevented, Figure 7 is B of Figure 6.
-B sectional view. 1, 1'... Form sending roller, 2, 2'...
Roller to prevent two sheets from being sent out, 3, 3'... form,
4... Lever, 5... Fulcrum, 6... Spring,
7... Stud, 8... Guide, 101... Low stiffness coefficient roller part (roller part A), 102... High stiffness coefficient roller part (roller part B).
Claims (1)
帳票送り出しローラと、前記帳票送り出しローラ
と対向し外周に低摩擦係数を有する物質が設けら
れた第一のローラ部と外周に高摩擦係数を有する
物質が設けられかつ前記第一のローラ部の直径よ
り大きい直径を有する第二のローラ部とを有する
二枚送り防止ローラとを具備し、前記第一のロー
ラ部の周囲だけが前記帳票送り出しローラの周囲
に押圧されて前記帳票送り出しローラと同方向に
回転させられることにより、帳票に搬送方向と逆
方向の戻し力を与えることを特徴とする帳票二枚
送り出し防止機構。1. A form delivery roller provided with a material having a high coefficient of friction on its outer periphery, a first roller portion facing the form delivery roller and provided with a material having a low coefficient of friction on its outer periphery, and having a high coefficient of friction on its outer periphery. and a second roller section provided with a substance and having a diameter larger than the diameter of the first roller section, and only the periphery of the first roller section is covered with the form feed roller. A mechanism for preventing double-sheet sending out of a form, characterized in that it applies a return force to the form in a direction opposite to the conveyance direction by being pressed around the periphery of the form-feeding roller and rotated in the same direction as the form sending-out roller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP594084A JPS60153353A (en) | 1984-01-17 | 1984-01-17 | Business-form double-feed preventing mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP594084A JPS60153353A (en) | 1984-01-17 | 1984-01-17 | Business-form double-feed preventing mechanism |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60153353A JPS60153353A (en) | 1985-08-12 |
| JPH025651B2 true JPH025651B2 (en) | 1990-02-05 |
Family
ID=11624897
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP594084A Granted JPS60153353A (en) | 1984-01-17 | 1984-01-17 | Business-form double-feed preventing mechanism |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60153353A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111573336A (en) * | 2017-09-28 | 2020-08-25 | 精工爱普生株式会社 | image reading device |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6216148A (en) * | 1985-07-13 | 1987-01-24 | Canon Inc | Liquid jet recording head |
| JPS6216150A (en) * | 1985-07-13 | 1987-01-24 | Canon Inc | liquid jet recording head |
| JP2011057431A (en) * | 2009-09-14 | 2011-03-24 | Toshiba Corp | Paper feeder |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS584539U (en) * | 1981-07-02 | 1983-01-12 | 東芝テック株式会社 | Sheet feeding device in sheet processing machine |
| JPS58187540U (en) * | 1982-06-08 | 1983-12-13 | 株式会社リコー | Paper double feed prevention device |
-
1984
- 1984-01-17 JP JP594084A patent/JPS60153353A/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111573336A (en) * | 2017-09-28 | 2020-08-25 | 精工爱普生株式会社 | image reading device |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS60153353A (en) | 1985-08-12 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |