JPH02204229A - Paper feed device - Google Patents
Paper feed deviceInfo
- Publication number
- JPH02204229A JPH02204229A JP1026031A JP2603189A JPH02204229A JP H02204229 A JPH02204229 A JP H02204229A JP 1026031 A JP1026031 A JP 1026031A JP 2603189 A JP2603189 A JP 2603189A JP H02204229 A JPH02204229 A JP H02204229A
- Authority
- JP
- Japan
- Prior art keywords
- paper
- manual
- feed
- paper feed
- paper sheet
- 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
- 230000002265 prevention Effects 0.000 claims abstract description 12
- 210000003127 knee Anatomy 0.000 abstract 1
- 238000000034 method Methods 0.000 description 5
- 210000000078 claw Anatomy 0.000 description 3
- 238000005452 bending Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 230000004323 axial length Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229920006267 polyester film Polymers 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、複写機、プリンタ等の画像形成装置本体に用
紙を供給する給紙装置ｊこ関するものであ〔従来の技術
〕
従来、前記給紙装置として、自動給紙と手差し給紙が可
能なものが提供されており、例えば下記する２つの方式
がある。DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a paper feeding device that supplies paper to the main body of an image forming apparatus such as a copying machine or a printer. Paper feeding devices that are capable of automatic paper feeding and manual paper feeding are available, and there are, for example, the following two methods.
まず第１の方式は、２つの給紙部、すなわち自動給紙部
と手差し給紙部を別個に設け、これらを独立に駆動させ
るものである。The first method is to separately provide two paper feed sections, namely an automatic paper feed section and a manual paper feed section, and drive these sections independently.
第２の方式は、手差しガイドと、手差しガイド部材と、
前記手差しガイドの開閉に基づいて、自動給紙機構の給
紙ローラとこれに圧接されている収容用紙との間に前記
手差しガイドを進退させる機構とを備え、手差しガイド
の開閉作業だけで自動給紙又は手差し給紙を選択的に行
えるようにしたものである。The second method includes a manual guide, a manual guide member,
Based on the opening and closing of the manual feed guide, the manual feed guide is provided with a mechanism that moves the manual feed guide forward and backward between the paper feed roller of the automatic paper feed mechanism and the stored paper that is in pressure contact with the paper feed roller, and the automatic feed guide can be automatically fed simply by opening and closing the manual feed guide. This allows you to selectively feed paper or manual paper.
しかしながら、第１の方式は装置自体が大型化する。ま
た、それぞれの給紙部を個々に駆動系に連結しなければ
ならず、構成が複雑になるという問題点がある。However, in the first method, the device itself becomes large. Furthermore, each paper feeding section must be individually connected to the drive system, which results in a complicated configuration.
また、第２の方式は、装置全体がコンパクトになるもの
の、手差しガイド部材を給紙ローラと収容用紙との間に
正確にしかも無理なく進入させる必要から、手差しガイ
ドを進退させる機構が非常に複雑になるという問題点が
ある。In addition, although the second method makes the entire device more compact, the mechanism for advancing and retracting the manual feed guide is very complicated because the manual feed guide member needs to be inserted accurately and effortlessly between the paper feed roller and the stored paper. There is a problem with becoming.
本発明は前記問題点を解決するためになされたしので、
一実施例を示す第１〜６図を参照して説明すると、給紙
装置を、
＋４給紙ローラ（１３）と、
ｉｉ、該給紙ローラ（１３）に収容用紙（４）の上面を
押し付ける用紙圧接手段（２２，２６）と、ｉｉｉ 、
前記給紙ローラ（１３）に圧接して収容用紙（４）の重
送を阻止する重送阻止手段（１６）、ｉｖ、前記用紙圧
接手段（２２，２６）と重送阻止手段（１６）との圧接
状態を解除する解除手段（３８等）と、
Ｖ１手差しガイド（３１）と、
ｖｌ、少なくとも前記給紙ローラ（１３）の両側部に位
置する弾性部（３７，３７）を有し、前記手差しガイド
（３１）に沿って装入される手差し用紙を、前記給紙ロ
ーラ（１３）の回転基づいて該給紙ローラ（Ｉ３）と萌
記弾性部（３７゜３７）とで挾持しながら搬送力する搬
送部材（３５）と、
で給紙装置を構成したしのである。The present invention was made to solve the above problems, and therefore,
To explain with reference to FIGS. 1 to 6 showing one embodiment, the paper feeding device includes a +4 paper feeding roller (13), and ii. pressing the upper surface of the stored paper (4) against the paper feeding roller (13). paper pressure contact means (22, 26); iii;
a double feeding prevention means (16) that presses against the paper feed roller (13) to prevent double feeding of the stored sheets (4), iv, the paper pressure contact means (22, 26) and the double feeding prevention means (16); a release means (38, etc.) for releasing the pressure contact state of the V1 manual feed guide (31); and a V1 manual feed guide (31); The manual feed paper loaded along the manual feed guide (31) is conveyed while being held between the paper feed roller (I3) and the elastic portion (37° 37) based on the rotation of the paper feed roller (13). A paper feeding device is constituted by a conveyance member (35) that applies force, and the following.
前記構成を備えた給紙装置では、収容用紙（４）は、そ
の上面が用紙圧接手段（２２，２６）によって給紙ロー
ラ（１３）に圧接され、該給紙ローラ（１３）の回転に
基づいて給紙されるとともに、重送阻止手段（１６）に
よって最上紙だけが本体（りに供給される。In the paper feed device having the above configuration, the upper surface of the stored paper (4) is pressed against the paper feed roller (13) by the paper pressure contact means (22, 26), and the paper feed roller (13) is rotated based on the rotation of the paper feed roller (13). At the same time, only the uppermost sheet is fed to the main body by the double feeding prevention means (16).
一方、解除手段（３８等）を操作すると、用紙圧接手段
（２２，２６）と重送阻止手段（１６）が解除される。On the other hand, when the release means (38, etc.) is operated, the paper pressure contact means (22, 26) and the double feeding prevention means (16) are released.
すなわち、供給ローラ（Ｉ３）に対する収容用紙（４）
の圧接と、重送阻止手段（１６）の圧接が解除される。That is, the storage paper (4) relative to the supply roller (I3)
The pressure contact between the two and the pressure contact between the double feeding prevention means (16) are released.
この状態で手差しガイド（３１）に沿って手差し用紙を
装入すると、この手差し用紙は給紙ローラ（１３）の回
転に基づいて、該給紙ローラ（１３）と弾性部（３７，
３７）とで、手差し用紙自身の腰の強さに基づいて挾持
されながら搬送され、本体（１）の中に供給される。In this state, when manually feeding paper is inserted along the manual feeding guide (31), this manual feeding paper is moved between the paper feeding roller (13) and the elastic part (37,
37), the manual paper is conveyed while being held while being held based on its own stiffness, and is fed into the main body (1).
以下、前記構成を有する本発明にかかる給紙装置を具体
化した一実施例について、添付図面を参照して説明する
。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the paper feeding device according to the present invention having the above configuration will be described below with reference to the accompanying drawings.
第１．２図において、複写機、プリンタ等の本体（１）
の給紙部（１１）には、駆動系に駆動連結された軸（１
２）が配置され、この軸（１２）に軸方向の長さが約数
ｃｍの給紙ローラ（Ｉ３）が設けである。In Figure 1.2, the main body (1) of a copying machine, printer, etc.
The paper feed section (11) includes a shaft (1) that is drive-coupled to a drive system.
2), and a paper feed roller (I3) having an axial length of about several cm is provided on this shaft (12).
給紙ローラ（１３）の下には、上部にさばき部材（１６
）、下部にアーム（１７）を有するさばき台（１４）が
、軸（１５）に回動可能に支持され、図示しない付勢手
段によって矢印す方向に付勢され、前記さばき部材（１
６）が給紙ローラ（１３）に圧接させである。Below the paper feed roller (13), there is a separating member (16) at the top.
), a screening table (14) having an arm (17) at the bottom is rotatably supported on a shaft (15), is urged in the direction of the arrow by a biasing means (not shown), and is
6) is brought into pressure contact with the paper feed roller (13).
給紙カセット（２）は、トレイ（２１）の上に押上板（
２２）、サイド規制板（２９，２９）を備えている（第
３図参照）。前記押上板（２２）は、前部を両側に拡幅
して全体として略Ｔ字状に形成してあり、後端部が軸（
２３）を介してトレイ（２１）に回動可能に支持され、
先端の爪部（２４）がトレイ（２１）の前壁に設けた上
下方向のスリット（２５）を介して曲刃に突出し、ばね
（２６）で上方に付勢されている。また、押上板（２２
）の前部拡幅部の両側には三角形状のガイド部（２７，
２７）（一方は図示口゛ず）が設けてあり、その頂上部
に凹み（２８）が形成しである。サイド規制板（２９，
２９）は、押上板（２２）の後部両側に配置されており
、それらの間隔は調整可能としである。The paper feed cassette (2) has a push-up plate (
22) and side regulating plates (29, 29) (see Fig. 3). The push-up plate (22) has a front part widened on both sides to form an approximately T-shape as a whole, and a rear end part of the push-up plate (22) has a shaft (
is rotatably supported on the tray (21) via a
A claw portion (24) at the tip protrudes into the curved blade through a vertical slit (25) provided in the front wall of the tray (21), and is urged upward by a spring (26). In addition, a push-up plate (22
) have triangular guide parts (27,
27) (one of which has no opening shown) is provided, and a recess (28) is formed at the top of the opening. Side regulation plate (29,
29) are arranged on both sides of the rear of the push-up plate (22), and the interval therebetween is adjustable.
前記給紙カセット（２）は、トレイ（２１）に用紙（４
）を載置し、前部を本体（１）の給紙部（１１）に差し
込んで装着される。この状態で、ばね（２６）によって
上方に付勢された用紙（４）の先端部上面が、給紙ロー
ラ（１３）の下面に圧接される。また、押上Ｆｉ、（２
２）の先端爪部（２４）は、アーム（１７）の下端に設
けたフランジ（１８）の上に位置される。The paper feed cassette (2) stores paper (4) in the tray (21).
) and insert the front part into the paper feed section (11) of the main body (1). In this state, the upper surface of the leading end of the paper (4), which is urged upward by the spring (26), is pressed against the lower surface of the paper feed roller (13). Also, Oshiage Fi, (2
The tip claw portion (24) of 2) is located on the flange (18) provided at the lower end of the arm (17).
手差し給紙部（３）は、第３〜５図に示すように、手差
しガイド（３１）、手差しカバー（３８）を備えている
。手差しガイド（３１）は板材の両端を折り曲げて脚ｆ
ｉｔ（（３２，３２）を形成したもので、トレイ（２Ｉ
）の前部に配置され、前記脚部（３２，３２）がトレイ
（２Ｉ）の両側壁上に位置さけである。手差しガイド（
３ｉ）の先端部にはポリエステルフィルム又は金属薄板
からなく弾性ガイド（３５）が設けてあり、その先端中
央部を切除して凹所（３６）及びその両側に位置する弾
性片（３７，３７）が形成され、給紙カセット（２）を
給紙部（１１）に装着した状態で、前記弾性ガイド（３
５）の凹所（３６）に給紙ローラ（１３）が位置するよ
うにしである。As shown in FIGS. 3 to 5, the manual paper feed section (3) includes a manual feed guide (31) and a manual feed cover (38). The manual feed guide (31) is made by bending both ends of the plate material and attaching the legs f.
it ((32, 32), and tray (2I
), and the legs (32, 32) are positioned on both side walls of the tray (2I). Manual feed guide (
3i) is provided with an elastic guide (35) not made of polyester film or thin metal plate, and the central part of the tip is cut off to form a recess (36) and elastic pieces (37, 37) located on both sides thereof. is formed, and when the paper feed cassette (2) is attached to the paper feed section (11), the elastic guide (3
The paper feed roller (13) is positioned in the recess (36) of 5).
また、手差しガイド（３１）には長平方向に溝（３３，
３３）が形成され、゛それぞれにサイド規制板（３４，
３４）が移動可能に設けである。In addition, the manual feed guide (31) has grooves (33,
33) are formed, and side regulating plates (34, 33) are formed respectively.
34) is movably provided.
手差しカバー（３８）は、板材の両端を折り曲げて脚部
を形成し、その内側にそれぞれ係合片（４０，４０）が
設けてあり、前記手差しガイド（３１）を覆うように配
置され、軸（３９，３９）を介して前記手差しガイド（
３１）に支持され、第１．３図に示すように、手差しガ
イド（３１）の上面を開閉できるようにしである。The manual feed cover (38) has legs formed by bending both ends of a plate material, and engagement pieces (40, 40) are provided on the inside of the legs.The manual feed cover (38) is arranged to cover the manual feed guide (31), and has legs. (39, 39) through the manual feed guide (
31), and as shown in Fig. 1.3, the upper surface of the manual feed guide (31) can be opened and closed.
以上の構成からなる給紙装置では、給紙カセット（２）
に載置された用紙（４）は、第２図に示すように、ばね
（２６）の付勢力によって給紙ローラ（１３）に圧接さ
れ、該給紙ローラ（１３）の矢印ａ方向の回転に基づい
て前方に搬送される。そして、給紙ローラ（１３）とさ
ばき部材（１６）との間で、これらの摩擦係数の差に基
づくさばき効果によって最上紙から一枚づつ本体（１）
の中に供給され、同時に用紙の重送が防止される。In the paper feed device with the above configuration, the paper feed cassette (2)
As shown in FIG. 2, the paper (4) placed on the paper is pressed against the paper feed roller (13) by the biasing force of the spring (26), and the paper feed roller (13) rotates in the direction of arrow a. is transported forward based on the Then, between the paper feed roller (13) and the separating member (16), the paper is separated one by one from the topmost paper to the main body (1) by the separating effect based on the difference in friction coefficient between them.
At the same time, double feeding of paper is prevented.
手差し給紙を行う場合、第３．４図に示すように、手差
しカバー（３８）を矢印Ｃ方向に回転して、手差しガイ
ド（３１）の上面を開放する。このとき、手差しカバー
（３８）の回転にしたがって、これに設けた係合片（４
０，４０）が押上板（２２）の両側に位置するガイド部
（２７）の上端斜面部をＩＨ動じつつこれを押圧し、押
上板（２２）を下方に回転する。その結果、用紙（４）
が降下して給紙ローラ（１３）への圧接が解除される。When manually feeding paper, as shown in FIG. 3.4, rotate the manual feed cover (38) in the direction of arrow C to open the upper surface of the manual feed guide (31). At this time, as the manual feed cover (38) rotates, the engaging piece (4) provided on the manual feed cover (38) rotates.
0, 40) press the upper end slope portions of the guide portions (27) located on both sides of the push-up plate (22) while moving the IH, thereby rotating the push-up plate (22) downward. As a result, paper (4)
is lowered and the pressure contact with the paper feed roller (13) is released.
また、押上板（２２）の降下によって、その先端爪部（
２４）がアーム（１７）のフランジ（１８）を押し下げ
、さばき部材（１６）を給紙ローラ（１３）から離間す
る。なお、係合片（４０，４０）の先端がガイド部（２
７，２７）の凹み（２８）と保合すると、押上板（２７
）が降下した状態が安定的に保持される。Also, as the push-up plate (22) descends, its tip claw (
24) pushes down the flange (18) of the arm (17) and separates the separating member (16) from the paper feed roller (13). Note that the tips of the engagement pieces (40, 40) are connected to the guide portion (2).
7, 27), the push-up plate (27)
) is stably maintained in the lowered state.
この状態で、手差しガイド（３Ｉ）に沿って一点鎖線で
示す方向から手差し用紙を装入すると、その手差し用紙
を検出することにより給紙ローラ（１３）が矢印ａ方向
に回転する。In this state, when a manual sheet is inserted along the manual feed guide (3I) from the direction shown by the dashed line, the paper feed roller (13) rotates in the direction of arrow a upon detection of the manual sheet.
そして、装入された手差し用紙の先端が回転中の給紙ロ
ーラ（１３）に触れると手差し用紙に搬送力が付与され
、第６図に示すように、手差し用紙はその腰の強さによ
って給紙ローラ（１３）と弾性片（３７，３７）とで挾
持されながら本体（＋）内に供給される。このとき、給
紙ローラ（１３）は給紙カセット（２）内の用紙（４）
とは非接触としであるので、手差し用紙と共に用紙（４
）が重送されることはない。When the leading edge of the loaded manual paper comes in contact with the rotating paper feed roller (13), a conveying force is applied to the manual paper, and as shown in Figure 6, the manual paper is fed by its stiffness. The paper is fed into the main body (+) while being held between the paper roller (13) and the elastic pieces (37, 37). At this time, the paper feed roller (13) picks up the paper (4) in the paper feed cassette (2).
Since this is a non-contact type, paper (4
) will not be sent in duplicate.
また、手差しカバー（３８）を第２図の状態に閉じれば
、係合片（４０）とガイド部（２７）との係合が解除さ
れ、押」二枚（２２）が上昇し、用紙（４）の先端上面
が給紙ローラ（１３）に圧接され、給紙カセット（２）
からの給紙が可能になる。Furthermore, when the manual feed cover (38) is closed in the state shown in FIG. 4) is pressed against the paper feed roller (13), and the paper feed cassette (2)
It becomes possible to feed paper from
なお、本実施例においては、手差し給紙部（３）のカバ
ー（３８）の開閉により、自動給紙と手差し給紙の切換
を行なったが、手差し給紙部（３）のガイド自体を本体
側に対して開閉自在として給紙の切換を行なっても良い
。In this embodiment, automatic paper feeding and manual paper feeding were switched by opening and closing the cover (38) of the manual paper feeding section (3), but the guide itself of the manual paper feeding section (3) The paper feed may be switched by being able to open and close from the side.
以上の説明で明らかなように、本発明にかかる給紙装置
によれば、給紙部は一つでよいので、全体に小型化する
ことができる。As is clear from the above description, according to the paper feeding device according to the present invention, only one paper feeding section is required, so that the overall size can be reduced.
また、用紙圧接手段と重送阻止手段の解除手段を操作す
るだけで手差し給紙と自動給紙に切り換えられるので、
構成が簡単・容易になるとともに、手差し給紙状態で収
容用紙が自動給紙されることはないので、誤動作がない
。In addition, you can switch between manual paper feeding and automatic paper feeding by simply operating the paper pressure contact means and the release means of the double feeding prevention means.
The configuration is simple and easy, and since the stored paper is not automatically fed in the manual paper feeding state, there is no possibility of malfunction.
第１，３図は給紙装置の斜視図、第２，４図は給紙装置
の断面図、第５図は給紙装置の一部斜視図、第６図は手
差し用紙の搬送状態を示す斜視図である。
Ｉ・・・本体、２・・・給紙カセット、３・・・手差し
給紙部、４・・・用紙、１１・・・給紙部、１３・・・
給紙ローラ、１４・・・さばき台、Ｉ５・・・さばき部
材、２１・・・トレイ、２２・・・押上板、３１・・・
手差しガイド、３５・・・弾性部材、３６・・・凹所、
３７・・・弾性片、３８・・・手差しカバー、４０・・
・係合部。
特許出願人 ミノルタカメラ株式会社
代理人 弁理士 前出 葆 ばかＩ名
第５図Figures 1 and 3 are perspective views of the paper feeder, Figures 2 and 4 are sectional views of the paper feeder, Figure 5 is a partial perspective view of the paper feeder, and Figure 6 shows the conveyance state of manual paper. FIG. I...Main unit, 2...Paper feed cassette, 3...Manual paper feed section, 4...Paper, 11...Paper feed section, 13...
Paper feed roller, 14... Sorting table, I5... Sorting member, 21... Tray, 22... Push-up plate, 31...
manual feed guide, 35... elastic member, 36... recess,
37...Elastic piece, 38...Manual feed cover, 40...
・Engagement part. Patent Applicant Minolta Camera Co., Ltd. Agent Patent Attorney Ishiboshi Ika I Name Figure 5
Claims (1)
押し付ける用紙圧接手段と、前記給紙ローラに圧接して
収容用紙の重送を阻止する重送阻止手段と、前記用紙圧
接手段と重送阻止手段の圧接状態を解除する解除手段と
、手差しガイドと、少なくとも前記給紙ローラの両側部
に位置する弾性部を有し、前記手差しガイドに沿って装
入される手差し用紙を、前記給紙ローラの回転に基づい
て該給紙ローラと前記弾性部とで挾持しながら搬送する
搬送部材と、からなることを特徴とする給紙装置。(1) A paper feed roller, a paper pressure contact unit that presses the upper surface of the stored paper against the paper feed roller, a double feed prevention unit that presses against the paper feed roller to prevent double feeding of the stored paper, and the paper pressure contact unit and a release means for releasing the pressure contact state of the double feeding prevention means, a manual feed guide, and elastic portions located at least on both sides of the paper feed roller, the manual feed sheet being loaded along the manual feed guide, A paper feeding device comprising: a conveying member that conveys the paper while being held between the paper feeding roller and the elastic portion based on the rotation of the paper feeding roller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1026031A JPH02204229A (en) | 1989-02-02 | 1989-02-02 | Paper feed device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1026031A JPH02204229A (en) | 1989-02-02 | 1989-02-02 | Paper feed device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02204229A true JPH02204229A (en) | 1990-08-14 |
Family
ID=12182337
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1026031A Pending JPH02204229A (en) | 1989-02-02 | 1989-02-02 | Paper feed device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02204229A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103101780A (en) * | 2011-11-11 | 2013-05-15 | 京瓷办公信息系统株式会社 | Sheet feeding device and image forming apparatus |
-
1989
- 1989-02-02 JP JP1026031A patent/JPH02204229A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103101780A (en) * | 2011-11-11 | 2013-05-15 | 京瓷办公信息系统株式会社 | Sheet feeding device and image forming apparatus |
| JP2013103783A (en) * | 2011-11-11 | 2013-05-30 | Kyocera Document Solutions Inc | Sheet feeder and image forming apparatus having the same |
| EP2592029A3 (en) * | 2011-11-11 | 2014-07-23 | Kyocera Document Solutions Inc. | Sheet feeding device and image forming apparatus including the same |
| CN103101780B (en) * | 2011-11-11 | 2016-03-30 | 京瓷办公信息系统株式会社 | Paper feed and image processing system |
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