JPS62255330A - Sheet feed device - Google Patents
Sheet feed deviceInfo
- Publication number
- JPS62255330A JPS62255330A JP9569586A JP9569586A JPS62255330A JP S62255330 A JPS62255330 A JP S62255330A JP 9569586 A JP9569586 A JP 9569586A JP 9569586 A JP9569586 A JP 9569586A JP S62255330 A JPS62255330 A JP S62255330A
- Authority
- JP
- Japan
- Prior art keywords
- paper feed
- paper
- sheet feed
- sheet
- paper feeding
- 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.)
- Granted
Links
- 230000003028 elevating effect Effects 0.000 claims abstract description 6
- 230000003247 decreasing effect Effects 0.000 abstract 1
- 238000001514 detection method Methods 0.000 description 10
- 230000000903 blocking effect Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000007664 blowing Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
Landscapes
- Sheets, Magazines, And Separation Thereof (AREA)
Abstract
Description
【発明の詳細な説明】
［産業上の利用分野］
本発明はプリンタ、複写機等の多数のシート紙を使用す
る装置又は機械に使用される給紙装置に関し、特には、
幾つかのサイズのシート紙を積載する複数の給紙台を上
下に多段に配置して有する給紙装置に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a paper feeding device used in devices or machines that use a large number of sheets of paper, such as printers and copying machines, and in particular,
The present invention relates to a paper feeding device having a plurality of paper feeding trays arranged vertically in multiple stages on which sheets of paper of several sizes are stacked.
［従来の技術］
プリンタ、複写機等の画像再生装置の分野においては、
その利用範囲の拡大に伴い多種サイズの画像再生が要求
され、その結果、複数の異なるサイズのシート紙を適宜
にプリンタ内に供給する為の有効な給紙装置を備えるこ
とが必要とされている。[Prior Art] In the field of image reproduction devices such as printers and copying machines,
With the expansion of the range of use, image reproduction of various sizes is required, and as a result, it is necessary to have an effective paper feeding device to appropriately feed sheets of paper of multiple different sizes into the printer. .
代表的な給紙装置としては、所望の紙サイズのカセット
を手操作により適宜交換可能としたカセット型装置、又
は予め予測される多数のサイズのシート紙を収容し、適
宜機械的に所望サイズのシート紙を選択する給紙台を装
置が知られる。前者は、給紙装置の機械的構成を筒便に
し得るという利点を有する反面、多量の紙（例えば５０
０枚）の収納は難しく、更にカセット着脱作業が煩雑で
あり、又紙サイズがＡ１又はＡＯ等の大型サイズの場合
、不向ぎであるという問題を残す。それ故、多足プリン
１〜及び大型サイズのプリントを１１％するプリンタに
おいては、主として後者が使用されている。後者におい
ては紙サイズの選択はプリンタ操作パネル上のスイッチ
操作によりワンタッチで行なえ使用上簡便であるという
利点を有する。Typical paper feeding devices include a cassette-type device in which a cassette of a desired paper size can be changed manually as appropriate, or a cassette-type device that accommodates sheet paper of a large number of predicted sizes and mechanically feeds the desired size as appropriate. Devices are known that have paper feed trays for selecting sheets of paper. The former has the advantage that the mechanical structure of the paper feeding device can be simplified, but on the other hand, it can handle a large amount of paper (for example, 50
It is difficult to store 0 sheets), the work of attaching and detaching the cassette is complicated, and it is not suitable for large paper sizes such as A1 or AO. Therefore, the latter is mainly used in printers that print 1 to 11% of multi-legged prints and large-sized prints. The latter has the advantage that the paper size can be selected with one touch by operating a switch on the printer operation panel, making it easy to use.
従来、この種の装置として例えば特開昭５７−１９５０
４９丹又は特開昭５９−２１２８５８４公報に開示され
るように、異なる紙サイズ用の複数の給紙台をその前端
部が上下方向にほぼ一直線に整列するように保持部材上
に多段に配列させ、該保持部材を適宜に昇降することに
より所望の給紙台を給紙部入口に位置させ、次いで当該
給紙台を略水平方向に移り」シて給紙部内に配置する構
成が知られる。Conventionally, as this type of device, for example, Japanese Patent Application Laid-Open No. 57-1950
As disclosed in Japanese Patent Application Laid-Open No. 59-2128584, a plurality of paper feed trays for different paper sizes are arranged in multiple stages on a holding member so that their front ends are aligned substantially in a straight line in the vertical direction. A configuration is known in which a desired paper feed tray is positioned at the entrance of the paper feed section by appropriately raising and lowering the holding member, and then the paper feed tray is moved in a substantially horizontal direction and placed within the paper feed section.
［発明が解決しようとする問題点］
しかしながら上記した従来装置においては、給紙台上の
シート紙を給紙部内に配置された吸気筒又は給紙ローラ
等の紙送り手段に対してその作用位置に押し上げる為の
押上げ装置を給紙部下方又は給紙台自体に別個に備える
ものであり、その結果、給紙装置の全体構成を簡易化し
得ｔ【いという問題点を有する。又、全ての給紙台先端
を整列して収容するた構成である為にＡＯ等の大型サイ
ズのシート紙を積載する給紙台の後端は後方に突出し、
この為、給紙装置自体に多大のスペースを必要とする。[Problems to be Solved by the Invention] However, in the above-mentioned conventional device, the sheet paper on the paper feed tray is placed in a position where it acts relative to a paper feed means such as a suction cylinder or a paper feed roller disposed in the paper feed section. A push-up device for pushing up the paper feeder is separately provided below the paper feeder or on the paper feeder itself, and as a result, there is a problem in that the overall structure of the paper feeder cannot be simplified. In addition, since the tips of all the paper feed trays are arranged and housed, the rear end of the paper feed tray, which is used to load large-sized sheets such as AO, protrudes rearward.
Therefore, the paper feeding device itself requires a large amount of space.
本発明は上記したような従来の給紙装置の問題点に鑑み
て成されたもので、所望の給紙台を適宜に紙送り手段の
作用位置に供給し得る、給紙装置を簡単且つコンパクト
な形で提供することを目的とする。The present invention has been made in view of the problems of conventional paper feeding devices as described above, and is a simple and compact paper feeding device that can appropriately feed a desired paper feeding tray to the operating position of the paper feeding means. The purpose is to provide it in a form that
Ｆ問題点を解決するための手段］
この為、本発明による給紙装置は、紙送り手段を右する
給紙部と、シート紙を積載した給紙台を略水平方向に移
動可能に１つ上下方向に多段に収納する保持部材と、前
記保持部材を給紙部側部において上下方向に移動させる
昇降装置と、給紙部入口に位置する給紙台を略水平方向
に引き出し当該給紙台を前記紙送り手段の下方に案内Ｊ
る引き出し装置とを有する給紙装置において、前記保持
部材は最下位の給紙台を予め引き出し位置に保持して収
納すると共に、前記給紙部は前記紙送り手段の下方に前
記最下位の給紙台を上下動し得る空間を有し、ざらに前
記最下位の給紙台の選択時に前記引き出し動作を省略す
る制御手段を右することを特徴とする
［作 用１
上記した構成により、選択された給紙台は、最下位の給
紙台を除く給紙台については、第１ステツプとして給紙
部入口に位置され、第２ステツプとして給紙部内に引き
出され、第３ステツプとして紙送り手段の作用位置に自
動的に位置するように移動され、又、最下位の給紙台に
ついては１ステツプで紙送り手段の作用位置に位置する
ように移動する。Means for Solving Problem F] For this reason, the paper feeding device according to the present invention has a paper feeding section on the right side of the paper feeding means and a paper feeding tray on which sheet paper is loaded, which are movable in a substantially horizontal direction. A holding member that is stored in multiple stages in the vertical direction, a lifting device that moves the holding member in the vertical direction on the side of the paper feed unit, and a paper feed stand located at the entrance of the paper feed unit that is pulled out in a substantially horizontal direction. is guided below the paper feeding means J.
In the paper feeding device, the holding member holds and stores the lowest paper feeding tray in advance in a pulled out position, and the paper feeding unit is arranged below the paper feeding means to store the lowest paper feeding tray. It is characterized by having a space in which the paper table can be moved up and down, and having a control means for omitting the drawing operation when selecting the lowest sheet feeding table. The paper feed trays other than the lowest one are placed at the entrance of the paper feed section in the first step, are pulled out into the paper feed section in the second step, and are pulled out into the paper feed section in the third step. It is automatically moved to the operating position of the paper feeding means, and the lowest paper feed tray is moved in one step to the operating position of the paper feeding means.
［実施例］ 次に、図示した本発明の詳細な説明する。[Example] The illustrated invention will now be described in detail.
第１図は本発明による給紙装置の一例を示し、この例で
は給紙装置１は、プリンタ本体２に対して分離可能なユ
ニット式となっており、プリンタ本体との連結時には適
当な制御手段によりプリンタ本体２の動作と関連してそ
の動作を制御される。FIG. 1 shows an example of a paper feeding device according to the present invention. In this example, the paper feeding device 1 is of a unit type that can be separated from the printer main body 2, and when connected to the printer main body, an appropriate control means is used. The operation is controlled in relation to the operation of the printer main body 2.
給紙装置１は、幾つかのサイズのシート紙を積載した複
数の給紙台Ｃ１、Ｃ２、Ｃ３，０４をほぼ等間隔で上下
に多段に収納した給紙台保持部材３を有する。保持部材
゛３は第１図でみて左右方向が開放した箱枠形状よりな
り、その側板３ａ（一方のみ図示）の外面の両端部近く
は給紙装置の側板１ａに固定された上下に延びるスライ
ドレール装置４により支持され、それにより保持部材３
全体が上下方向に移動し得る。The paper feeder 1 has a paper feed tray holding member 3 in which a plurality of paper feed trays C1, C2, C3, 04 loaded with sheet paper of several sizes are housed in multiple stages vertically at approximately equal intervals. The holding member 3 is in the shape of a box frame that is open in the left and right directions as seen in FIG. supported by a rail device 4, whereby the holding member 3
The whole can move up and down.
一方、この移動を実行する為に、昇降装＠２０として給
紙装置の側板１ａの内面に、四方に離間して位置するス
ブＯケツ１へ５．６，７，８．並びにスプロケット８に
隣接して位装置するスプロケット９が夫々回転自在に配
置されており、これらスプロケット５，６．９．７，８
．をその順に巡って無端チェーン１０が張架されている
。このチェーン１０はその適所１１において保持部材３
の側板３ａに固定されており、チェーンの移動に伴って
保持部材３を上下方向に移動させる。尚、スプロケット
５乃至９及びチェーン１０は保持部材３の他方の側にお
いても同様の構成で配置されている。図に示すようにス
プロケット５は別のチェーン１２を介して駆動スプロケ
ット１３に連結されており、駆動スプロケット１３は適
当な減速装置を介して正逆転モータ（図示なし）の駆動
輪に連結されている。正逆転モータはプリンタ本体の操
作パネル上の給紙台選択スイッチからの信号に基づさ、
後述する制御手段により正逆いずれかの方向に作動し、
保持部材３を冒降して、所望の給紙台を給紙部５０の側
部（以下給紙部入口という）５１に配置する。On the other hand, in order to carry out this movement, the sub-butts 1 are placed on the inner surface of the side plate 1a of the paper feeder as a lift @ 20, and are spaced apart from each other in all directions. Also, sprockets 9 are arranged adjacent to the sprockets 8 so as to be freely rotatable, and these sprockets 5, 6, 9, 7, 8
．． An endless chain 10 is strung around the ends in that order. This chain 10 has a holding member 3 in its proper position 11.
The holding member 3 is fixed to the side plate 3a of the chain, and moves the holding member 3 in the vertical direction as the chain moves. Incidentally, the sprockets 5 to 9 and the chain 10 are arranged in a similar configuration on the other side of the holding member 3. As shown in the figure, the sprocket 5 is connected to a drive sprocket 13 via another chain 12, and the drive sprocket 13 is connected to a drive wheel of a forward/reverse motor (not shown) via a suitable reduction gear. . The forward/reverse motor operates based on the signal from the paper feed tray selection switch on the printer's operation panel.
It operates in either forward or reverse direction by the control means described later,
The holding member 3 is lowered and a desired paper feed tray is placed on the side portion 51 of the paper feed section 50 (hereinafter referred to as the paper feed section entrance).
各給紙台の上下方向位置を検知する為に、保持部材３の
一方の側板３ａの外面に、第２図に示すように、上下方
向に平行して延びる三列の突条１４．１５．１６が形成
されており１、一方、給紙装置の側板１ａの対向する部
分に前記突条１４．１５．１６がその遮光路内に貫入し
得るようにフォトインタラプタ装置１７．１８．１９が
配置されている。フォトインタラプタ装置は対応する突
条が遮光路内に位置するか否かに応じて所定の信号を後
述の制御装置に送信する。突条１４．１５゜１６は上下
方向に一部を重複した状態で段違いに配置されており、
これら突条がいずれのフォトインタラプタ装置の遮光路
内に位置しているかの組合わせにより、選択した給紙台
がどの位置にあるかを検知し得る。例えば給紙部人口５
１を位置基準として説明づると、フォトインタラプタ装
置１７及び１９が突条１４．１６により遮光されている
場合には、最上位の給紙台Ｃ１が給紙部人口５１に位置
し、次いで保持部材３が上昇し、フォトインタラプタ装
置１７のみが遮光状態となる時、給紙台Ｃ１は給紙部の
紙送り手段の作用位置にある。In order to detect the vertical position of each paper feed tray, three rows of protrusions 14, 15, 14, 15, 14, 15, 15, 15, 15, 15, 15, 14, 15, 15, 15, 15, 15, 14, 15, 14, 15, 15, 15, 14, 14, 34, 44, 44, 44, 44, 34, 34, 34, 44, 3, 3, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, , , , , , , , , , & 34 ridges 14 . On the other hand, photointerrupter devices 17, 18, and 19 are arranged on opposing portions of the side plate 1a of the paper feeder so that the protrusions 14, 15, and 16 can penetrate into their light-shielding paths. has been done. The photointerrupter device transmits a predetermined signal to a control device, which will be described later, depending on whether the corresponding protrusion is located within the light-blocking path. The protrusions 14.15°16 are arranged at different levels with some parts overlapping in the vertical direction,
The position of the selected paper feed table can be detected by determining which photo-interrupter device's light-blocking path these protrusions are located in. For example, paper feed section population 5
1 as a positional reference. When the photointerrupter devices 17 and 19 are shielded from light by the protrusions 14.16, the uppermost paper feed tray C1 is located at the paper feed section population 51, and then the holding member 3 is raised and only the photointerrupter device 17 is in a light-shielded state, the paper feed table C1 is at the operating position of the paper feeding means of the paper feed section.
同様にして、フォトインタラプタ装置１７及び１８が遮
光されている場合には第２の給紙台Ｃ２が、又、フォト
インタラプタ装置１８及び１９が遮光されている場合に
は第３の給紙台Ｃ３がそれぞれれ給紙部人口５１に位置
し、いずれのフォトインタラプタ装置も開放されている
場合には最下位の給紙台Ｃ４が給紙部入口に位置りる。Similarly, when the photo-interrupter devices 17 and 18 are shielded from light, the second paper feed tray C2 is used, and when the photo-interrupter devices 18 and 19 are shielded from light, the third paper feed tray C3 is used. are respectively located at the paper feed section population 51, and when both photointerrupter devices are open, the lowest paper feed tray C4 is located at the paper feed section entrance.
このような検知に基づき、選択された給紙台が給紙部入
口に位置するように保持部材の昇降が行なわれる。Based on such detection, the holding member is moved up and down so that the selected paper feed tray is located at the entrance of the paper feed section.
各給紙台Ｃ１〜Ｃ４は保持部材の側板３ａ間に多段に設
けられた支持板２１の各々の上面を滑動可能に配置され
、その水平方向（第１図でみて左右方向）の移動は側板
３ａの内面に取付けられた水平方向に延在する案内体（
図示なし）により案内され、給紙台Ｃ１〜Ｃ３について
は前記した保持部材の左右方向の開放部を介して左右い
ずれの方向にも引き出づことができ、又、給紙台Ｃ４に
ついては右方向にのみ引き出すことができる。尚、給紙
台Ｃ（７）！ｔｉ１１面には？Ｓ２数のコ０２２が支持
板２１上を滑動可能に配置され、前記引き出しを容易と
している。Each of the paper feed trays C1 to C4 is arranged so as to be able to slide on the upper surface of each support plate 21 provided in multiple stages between the side plates 3a of the holding member, and its movement in the horizontal direction (left and right direction as seen in FIG. 1) is controlled by the side plates 3a. A horizontally extending guide body attached to the inner surface of 3a (
(not shown), and the paper feed trays C1 to C3 can be pulled out in either the left or right direction through the left-right opening portion of the holding member described above, and the paper feed tray C4 can be pulled out to the right. It can only be pulled out in one direction. In addition, paper feed stand C (7)! On page 11 of ti? A number of S2 pieces 022 are arranged so as to be slidable on the support plate 21 to facilitate the pulling out.
第３図を参照として、給紙台Ｃ１〜Ｃ３について説明す
ると、給紙台Ｃはその一方の側面に横方向に突設したビ
ン部材２３を有しており、給紙台Ｃを保持部材３に収納
する動作に伴って、ビン部材２３が給紙台案内部材２４
の掛止装置２５により掛は止められ、給紙台が所定位置
に収納される。Referring to FIG. 3, the paper feed trays C1 to C3 will be explained. The paper feed tray C has a bin member 23 projecting laterally on one side thereof, and the paper feed tray C is held by a holding member 23. As the bin member 23 is stored in the paper feed tray guide member 24
The latch is stopped by the latch device 25, and the paper feed table is stored in a predetermined position.
案内部材２４は保持部材３に対して水平方向に移動可能
に支持された横アーム２６を有し、横アーム２６の後端
側に前記掛止装置２５が配設され、その前端側には断面
口字状の縦アーム２７が、その開放部２８が給紙台の引
き出し方向に対して横方向外側に向くように固定されて
いる。案内部材２４は縦アーム２７の一側が支持板２１
の前端部に当接することにより第１図でみて右方への移
動が阻止され、また縦アーム２７の他側は、給紙装置の
側板１ａの内面に上下方向に延在して突設された短幅の
阻止部材２９と当接することにより第１図でみて左方へ
の移動が阻止されている。、阻止部材２９は第１図に示
すように、給紙部人口５１において案内部材２４及び給
紙台Ｃを通すに十分な筒器にわたって開放しており、こ
れにより、給紙台が給紙部人口５１に位置する時にのみ
当該案内部材２４及び給紙台を第１図でみて左方に引き
出すことができる。給紙台Ｃ１〜Ｃ３に関するそれぞれ
の案内部材２４は給紙台が保持部材３内に収納されてい
る状態において、その縦アーム２７が上下方向に整列し
て各開放部２８が連続した通路を形成するように位置し
ている。The guide member 24 has a horizontal arm 26 that is supported movably in the horizontal direction with respect to the holding member 3, and the above-mentioned latching device 25 is disposed on the rear end side of the horizontal arm 26, and a cross section is provided on the front end side. A vertical arm 27 in the shape of an opening is fixed such that its open portion 28 faces outward in the lateral direction with respect to the direction in which the paper feed table is pulled out. The guide member 24 has one side of the vertical arm 27 connected to the support plate 21.
The vertical arm 27 is prevented from moving rightward as seen in FIG. By coming into contact with the short blocking member 29, movement to the left as seen in FIG. 1 is prevented. As shown in FIG. 1, the blocking member 29 is opened over a cylinder enough to pass the guide member 24 and the paper feed tray C at the paper feed section 51, so that the paper feed tray is opened in the paper feed section. Only when located at the population 51, the guide member 24 and paper feed stand can be pulled out to the left as seen in FIG. When the paper feed trays C1 to C3 are housed in the holding member 3, the vertical arms 27 of the guide members 24 for the paper feed trays C1 to C3 are aligned in the vertical direction, and the openings 28 form continuous passages. It's located like that.
前記通路内を移動可能に引き出し用ローラ３１が配設さ
れている。引き出し用ローラ３１は、一端を給紙装置の
側板１ａに枢着したアーム３２の自由端に回転自在に設
けられており、図示のように、縦アーム２７の開放部内
に外側より突出し、その周面が縦アーム２７の内側面と
転接づるように配設されている。アーム３２の中央部に
は、一端が回転円盤３３の外周部近くに枢着されたクラ
ンクアーム３４の他端が枢着されており、クランクアー
ム３４は円盤３３の回転に従ってアーム３２を枢動し、
これにより引き出し用ローラ３１が案内部人口５１に位
置する案内部材２４及びその給紙台を引き出し、当該給
紙台の前端側を拾紙部５０内に位置させる。A pull-out roller 31 is disposed so as to be movable within the passage. The pull-out roller 31 is rotatably provided at the free end of an arm 32, one end of which is pivotally connected to the side plate 1a of the paper feeding device. The surface is arranged so as to be in contact with the inner surface of the vertical arm 27. A crank arm 34, one end of which is pivoted near the outer periphery of a rotary disc 33, is pivotally connected to the center of the arm 32, and the crank arm 34 pivots the arm 32 in accordance with the rotation of the disc 33. ,
As a result, the pull-out roller 31 pulls out the guide member 24 and its paper feed tray located in the guide portion 51, and positions the front end side of the paper feed tray in the paper pick-up portion 50.
給紙台の引き出しを検知する為に、円盤３３の外周囲が
通過可能に、給紙装置の固定部にフォトインタラプタ装
置３５が配置され、一方、円盤３３のアーム３４の枢点
を中心に１８０°対面する位置に２つの切り欠き部３６
．３７が形成されており、切り欠き部３６がフォトイン
タラプタ装置３５に位置する時に給紙台が所定の給紙部
内に位置したことを検知し、又、切り欠き部３７がフォ
トインタラプタ装置３５に位置する時に給紙台が給紙部
入口に位置したことを検知する。この検知信号は後述す
る制御装置に送られる。尚、符号３９は円盤駆動用のモ
ータである。In order to detect the withdrawal of the paper feed table, a photo interrupter device 35 is arranged at the fixed part of the paper feed device so that the outer periphery of the disk 33 can pass through, °Two cutouts 36 at facing positions
．． 37 is formed, and when the notch 36 is located in the photo-interrupter device 35, it is detected that the paper feed table is located in a predetermined paper feed section, and the notch 37 is located in the photo-interrupter device 35. When this happens, it is detected that the paper feed tray is located at the entrance of the paper feed section. This detection signal is sent to a control device described later. Incidentally, the reference numeral 39 is a motor for driving the disk.
引き出された給紙台は、給紙部の紙送り装置の作用位置
よりも下方に位置しく以下、引き出し位置という）、次
いで、昇降装置２０の作動により、作用位置に上昇され
る。The drawn-out paper feed tray is located below the working position of the paper feeding device of the paper feeding section (hereinafter referred to as the drawn-out position), and is then raised to the working position by the operation of the lifting device 20.
一方、最下位の給紙台Ｃ４について述べると、給紙台Ｃ
４には通常最大サイズのシート紙が積載され、第１図に
示すようにそれが保持部材３内に収納された状態におい
て、その先端部は、他の給紙台Ｃ１〜Ｃ３の先端よりも
前方に位置し、給紙台０１〜Ｃ３を引き出した位置とほ
ぼ同じ位置に位置する。従って、給紙台Ｃ４が選択され
た場合には給紙台は直接に給紙部の紙送り手段の作用位
置に上昇され、前記した給紙台の引き出し動作は省略さ
れる。On the other hand, regarding the lowest paper feed tray C4, the paper feed tray C4 is
4 is normally loaded with the largest size sheet paper, and when it is housed in the holding member 3 as shown in FIG. It is located at the front, and is located at approximately the same position where the paper feed trays 01 to C3 are pulled out. Therefore, when the paper feed tray C4 is selected, the paper feed tray is directly raised to the operating position of the paper feeding means of the paper feed section, and the above-described operation of pulling out the paper feed tray is omitted.
第４図を参照として給紙部５０について説明すると、給
紙部５０は、その上部位置に紙送り手段として吸気筒５
２を備え、吸気筒５２の下方は保持部材３より引き出さ
れたｖｉ紙台０１〜Ｃ４を上下方向に移動可能に空間を
形成している。The paper feeding section 50 will be described with reference to FIG.
2, and a space is formed below the intake cylinder 52 in which the VI paper stands 01 to C4 pulled out from the holding member 3 can be moved in the vertical direction.
吸気筒５２はその後部壁５３に上下に延びる案内スリー
ブ５４を固定して有し、案内スリーブ５４内には、下端
にローラ５５を回転自在に支持した軸５６が上下に移動
し得るように案内されている。The intake cylinder 52 has a guide sleeve 54 fixed to its rear wall 53 and extending vertically, and within the guide sleeve 54 is a shaft 56 that rotatably supports a roller 55 at its lower end and is guided so that it can move up and down. has been done.
ローラ５５は給紙台Ｃ上の最上位シート紙に当接して軸
５６を給紙台の上下移動に応動させるようになっている
。軸５６の上端は吸気筒５２の後部壁５３に取付けられ
たフォトインタラプタ装置５７の遮光路内に下方から貫
入し得るようになっており、給紙台Ｃが吸気筒５２の作
用位置に達した時に軸５６の上端がフォトインタラプタ
装置５７の遮光路内に位置して遮光動作をし、この遮光
により生じる信号を給紙台の後述の制御装置に送って給
紙台の上方への移動を停止するようになっている。The roller 55 comes into contact with the uppermost sheet paper on the paper feed tray C, and causes the shaft 56 to respond to the vertical movement of the paper feed tray. The upper end of the shaft 56 is configured to penetrate from below into the light-blocking path of a photointerrupter device 57 attached to the rear wall 53 of the intake cylinder 52, and when the paper feed table C reaches the operating position of the intake cylinder 52. At times, the upper end of the shaft 56 is positioned within the light-blocking path of the photo-interrupter device 57 to perform a light-blocking operation, and a signal generated by this light-blocking is sent to a later-described control device for the paper feed table to stop upward movement of the paper feed table. It is supposed to be done.
吸気筒５２は、その下端部に後部壁５３、前部壁５８、
底部壁５９及び傾斜壁６１から画成される吸気室６２を
有しており、傾斜壁６１は横方向に延びる吸気用間口６
３が形成されている。吸気室６２内には外周にゴムリン
グを被着した給紙ローラ６４がその外周面の一部を開口
６３から外方に突出するように配置されており、袖６５
を介して適当な回転駆動装置に連結されて、第１図でみ
て反時計方向へ所定の速度で回転されるようになってい
る。The intake cylinder 52 has a rear wall 53, a front wall 58, and a lower end thereof.
It has an intake chamber 62 defined by a bottom wall 59 and an inclined wall 61, and the inclined wall 61 has an intake opening 6 extending laterally.
3 is formed. A paper feed roller 64 whose outer circumference is covered with a rubber ring is arranged in the intake chamber 62 so that a part of its outer circumferential surface protrudes outward from the opening 63 .
It is connected to a suitable rotary drive device via a screwdriver so that it can be rotated at a predetermined speed in a counterclockwise direction as viewed in FIG.
吸気筒５２は吸気室６２の上部に弁室６６を形成してお
り、弁室６６はその内部に回転弁部材６７を装着して有
し、吸気室内の空気の流れを遮断し得るようになってい
る。吸気筒５２の上方は送風機等の適当な負圧発生装置
６８（第１図に図示）に連結されており、吸気室６２を
大気圧力より低い圧力に維持するようになっている。こ
れにより、給紙台が吸気筒の作用位置にある時に、給紙
台上の最上位シート紙が開口６３の吸気により吸気筒５
２に吸引され、次いでローラ６４が回転して最上位シー
ト紙を送りローラ６９に給送する。尚、第１図において
符号７１は空気吹付装置であり、空気をシート紙の表面
とほぼ平行に吹付けて最上位シート紙を次位以下のシー
ト紙から分離するように作用する。The intake cylinder 52 forms a valve chamber 66 in the upper part of the intake chamber 62, and the valve chamber 66 has a rotary valve member 67 mounted therein, so that the flow of air within the intake chamber can be blocked. ing. The upper portion of the intake cylinder 52 is connected to a suitable negative pressure generating device 68 (shown in FIG. 1), such as a blower, to maintain the intake chamber 62 at a pressure lower than atmospheric pressure. As a result, when the paper feed tray is in the suction cylinder working position, the uppermost sheet paper on the paper feed tray is moved to the suction tube 5 by the intake air from the opening 63.
2 and then roller 64 rotates to feed the top sheet of paper to feed roller 69. In FIG. 1, reference numeral 71 denotes an air blowing device, which blows air substantially parallel to the surface of the sheet of paper to separate the uppermost sheet from the following sheets.
次に第５図及び第６図を参照として、給紙台の移動の制
御について説明する。斯かる制御は例えば第５図の制御
回路８０によって行なわれ、該制御回路８０は、制御プ
ログラムを内蔵する固定記憶装置（ＲＯＭ）８１、Ｒｏ
Ｍ８１に内蔵された制御プログラムに従って情報処理を
行なう中央処理装置（ＣＰＵ）８２、演算結果及びデー
タを一時的に記憶する等速呼比し記憶装置（ＲＡＭ）８
３、各スイッチ及び検知手段からの信号の為の入力イン
ターフェース回路８４及び出力インターフェース回路８
５を有する。Next, with reference to FIGS. 5 and 6, control of movement of the paper feed table will be described. Such control is performed, for example, by a control circuit 80 shown in FIG.
A central processing unit (CPU) 82 that processes information according to a control program built into the M81, and a constant speed call ratio memory (RAM) 8 that temporarily stores calculation results and data.
3. Input interface circuit 84 and output interface circuit 8 for signals from each switch and detection means
5.
第１図は第２の給紙台Ｃ２が吸気筒５２の作用位置にあ
る状態を示ずが、この状態において、第３の給紙台Ｃ３
を選択する場合を仮定する。プリンタ本体の操作パネル
上の給紙台選択スイッチ８６により給紙台Ｃ３を選択づ
゛ると、その信号８７はは入力インターフェース回路８
４を介してＣＰＵ８２に入力される。この信号に基づき
、給紙台Ｃ３が給紙部入口に位置すべきデ・−夕が読み
出される。一方、ＣＰＵ８２には入力インターフェース
回路８４を介して、給紙台の位置検知手段、即ち、フォ
トインタラプタ装置１７．１８．１９から給紙台Ｃ３の
現在位置を示ず信号８８が人力され、ＣＰＵ８２はこれ
ら信号８７．８８を比較して、該信号が異なる給紙台位
置を示ず場合には、Ｗ降装置２０を作動して給紙台Ｃ２
を吸気筒５２の作用位置より降下させて引き出し位置に
位置させ、次いで、引き出し装置のモータ３９を作動し
て給紙台Ｃ２を給紙部入口に返却する。一方、ＣＰＵ８
２は選択した給紙台Ｃ３が現状の給紙台Ｃ２の上方にあ
るか否かを判断して、これに応じて再びｌ装置２０を正
逆いずれかの方向に作動しくこの場合保持部材３を上昇
するように作動し）、給紙台位置検知手段１７．１８．
１９からの信号が、給紙台Ｃ３が給紙部入口に達したこ
とを検知するまで保持部材３を上昇する。給紙台Ｃ３が
給紙部入口に位置した後、引き出し装置のモータ３９が
作動して、給紙台Ｃ３を給紙部の引き出し位置に引き出
し、この時、円盤３６の切り欠き部３７がフォトインタ
ラプタ装置３５に位置して、装置３５からモータ３９の
停止信号がＣＰｔＪに発せられ、モータが消勢して引き
出しが完了する。次いで、再び昇降装置２０が作動され
て、給紙台Ｃ３の最上位シート紙が紙送り手段のローラ
５５及びその軸５４を押し上げてフォトインタラプタ装
置５７を遮光動作させるまで、保持部材を上昇し、遮光
動作時、即ち、給紙箱Ｃ３が吸気ｎ５２の作用位置に位
置した時に昇降装置２０を消勢する。次いで弁部材６７
が解放し且つ給紙ローラ６４が回転して所望の給紙を行
なう。給紙にｆｒい給紙台上のシート紙が減少して軸５
４がフォトインタラプタ装置５７の遮光路から外れると
、再び昇降装置が作動して給紙台を上昇し、最上位シー
ｌ−紙のレベルを吸気筒の作用位置に維持する。Although FIG. 1 does not show the state in which the second paper feed tray C2 is in the operating position of the suction cylinder 52, in this state, the third paper feed tray C3
Assume that you select . When paper feed tray C3 is selected using the paper feed tray selection switch 86 on the operation panel of the printer body, the signal 87 is sent to the input interface circuit 8.
4 to the CPU 82. Based on this signal, the date at which the paper feed tray C3 should be located at the entrance of the paper feed section is read out. On the other hand, a signal 88 indicating the current position of the paper feed tray C3 is inputted to the CPU 82 from the paper feed tray position detection means, that is, the photointerrupter device 17, 18, 19, via the input interface circuit 84, and the CPU 82 These signals 87 and 88 are compared, and if the signals do not indicate a different paper feed tray position, the W unloading device 20 is activated and the paper feed tray C2 is
is lowered from the operating position of the suction pipe 52 to the pull-out position, and then the motor 39 of the pull-out device is activated to return the paper feed table C2 to the paper feed section entrance. On the other hand, CPU8
2 determines whether or not the selected paper feed tray C3 is above the current paper feed tray C2, and accordingly operates the device 20 again in either the forward or reverse direction. In this case, the holding member 3 ), and the paper feed tray position detection means 17.18.
A signal from 19 causes the holding member 3 to rise until it is detected that the paper feed table C3 has reached the paper feed section entrance. After the paper feed tray C3 is located at the entrance of the paper feed section, the motor 39 of the pull-out device is activated to pull out the paper feed tray C3 to the pull-out position of the paper feed section. Located at the interrupter device 35, a stop signal for the motor 39 is issued from the device 35 to the CPtJ, and the motor is deenergized to complete the withdrawal. Next, the elevating device 20 is operated again to raise the holding member until the uppermost sheet of paper on the paper feed table C3 pushes up the roller 55 of the paper feeding means and its shaft 54, causing the photointerrupter device 57 to operate in a light-shielding operation, During the light shielding operation, that is, when the paper feed box C3 is located at the position where the intake air n52 acts, the elevating device 20 is deenergized. Then the valve member 67
is released and the paper feed roller 64 rotates to feed the desired paper. The number of sheets of paper on the paper feed tray decreases and the shaft 5
4 is out of the light-blocking path of the photointerrupter device 57, the lifting device is operated again to raise the paper feed platform and maintain the level of the top sheet L-paper in the working position of the suction cylinder.
上記給紙台の動作は給紙台Ｃ１〜Ｃ３のいずれに対して
も同様に行なわれる。The operation of the paper feed trays described above is performed in the same manner for all of the paper feed trays C1 to C3.
一方、最下位の給紙台Ｃ４が選択されｌζ場合し二は、
吸気部に位置する給紙台Ｃ２を前記のように給紙部入口
に返却したのち、昇降装置２０を作動して給紙台Ｃ４の
最上位シート紙が給紙部のローラ及び軸を移動しフォト
インタラプタ装置５７を作動するまで保持部材３を上シ
フする。On the other hand, if the lowest paper feed tray C4 is selected, then
After returning the paper feed tray C2 located in the suction section to the paper feed section entrance as described above, the lifting device 20 is operated to move the topmost sheet of paper on the paper feed tray C4 through the rollers and shafts of the paper feed section. The holding member 3 is shifted upward until the photointerrupter device 57 is activated.
上記した例では、紙送り手段として吸気筒を用いたが、
給紙ローラ等、他の送り手段であっても良い。又、給紙
台位置検知手段１７．１８．１つ引き出し検知手段３５
、給紙部検知手段５７としてフォトインタラプタ装置を
用いたがマイクロスッチ等の機械的検知手段であっても
良い。In the above example, the suction tube was used as the paper feeding means, but
Other feeding means such as a paper feed roller may also be used. Also, paper feed tray position detection means 17, 18. one drawer detection means 35
Although a photo-interrupter device is used as the sheet feeding unit detection means 57, mechanical detection means such as a micro switch may also be used.
［発明の効果］
以上説明した構成により、本発明は、最下位の給紙台に
ついては予め引き出し位置にある為に、従来のごとき引
き出し動作を省略でき、又、当該給紙台に最大サイズの
シート紙を積載することにより、給紙台収容の為のスペ
ースを最小とすることができ、従来の給紙装置に比して
コンパクトにし得る。[Effects of the Invention] With the configuration described above, the present invention allows the lowest paper feed tray to be placed in the pull-out position in advance, so that the conventional pull-out operation can be omitted. By stacking sheets of paper, the space for accommodating the paper feed tray can be minimized, and the paper feed device can be made more compact than conventional paper feed devices.
第１図は本発明による給紙装置の一例の縦断面図、第２
図は第１図の装置の給紙台位置検知手段を示す側面図、
第３図は第１図の装置の引き出し装置の一例を示す斜視
図、第４図は第１図の給紙部の縦断面図、第５図は給紙
台の動作のちり御回路を示づ゛ブロック図、第６図は第
５図の制御回路における処理手順を示すフローチャート
である。
１・・・給紙装置、 ３・・・保持部材、２０・・
・昇降装置、 ２４・・・給紙台案内部材、５０・・
・給紙部、 ５１・・・給紙部入口、８０・・・制
御手段。
第２図
■
第 ５ 図
第 ３ 図FIG. 1 is a longitudinal sectional view of an example of a paper feeding device according to the present invention, and FIG.
The figure is a side view showing the paper feed tray position detection means of the apparatus shown in FIG.
FIG. 3 is a perspective view showing an example of the drawer device of the device shown in FIG. 1, FIG. 4 is a vertical cross-sectional view of the paper feeding section of FIG. 1, and FIG. 5 shows a dust control circuit for the operation of the paper feeding tray. FIG. 6 is a flowchart showing the processing procedure in the control circuit of FIG. 5. 1... Paper feeding device, 3... Holding member, 20...
- Lifting device, 24...Paper feed tray guide member, 50...
- Paper feeding section, 51... Paper feeding section entrance, 80... Control means. Figure 2 ■ Figure 5 Figure 3
Claims (1)
台を略水平方向に移動可能に且つ上下方向に多段に収納
する保持部材と、前記保持部材を給紙部側部において上
下方向に移動させる昇降装置と、給紙部入口に位置する
給紙台を略水平方向に引き出し当該給紙台を前記紙送り
手段の下方に案内する引き出し装置とを有する給紙装置
において、前記保持部材は最下位の給紙台を予め引き出
し位置に保持して収納すると共に、前記給紙部は前記紙
送り手段の下方に前記最下位の給紙台を上下動し得る空
間を有し、さらに前記最下位の給紙台の選択時に前記引
き出し動作を省略する制御手段を有することを特徴とす
る給紙装置。a paper feed unit having a paper feed unit; a holding member that is movable in a substantially horizontal direction and stores a paper feed tray loaded with sheet paper in multiple stages in the vertical direction; In the paper feeding device, the paper feeding device has an elevating device that moves the paper feeding unit to the paper feeding unit, and a pull-out device that pulls out a paper feeding platform located at an entrance of the paper feeding section in a substantially horizontal direction and guides the paper feeding platform below the paper feeding means. The lowermost paper feed tray is held and stored in advance at a pulled-out position, and the paper feed section has a space below the paper feeding means in which the lowest paper feed tray can be moved up and down, and furthermore, the A paper feeding device comprising a control means for omitting the pulling operation when selecting the lowest paper feeding tray.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9569586A JPS62255330A (en) | 1986-04-24 | 1986-04-24 | Sheet feed device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9569586A JPS62255330A (en) | 1986-04-24 | 1986-04-24 | Sheet feed device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62255330A true JPS62255330A (en) | 1987-11-07 |
| JPH0517136B2 JPH0517136B2 (en) | 1993-03-08 |
Family
ID=14144631
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9569586A Granted JPS62255330A (en) | 1986-04-24 | 1986-04-24 | Sheet feed device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62255330A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006130349A2 (en) * | 2005-06-01 | 2006-12-07 | Hewlett-Packard Development Company, L.P. | Automatic, lockable and engageable/disengageable media tray |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57195049A (en) * | 1981-05-26 | 1982-11-30 | Konishiroku Photo Ind Co Ltd | Cassette replacing device |
| JPS59133144A (en) * | 1982-09-21 | 1984-07-31 | ゼロツクス・コ−ポレ−シヨン | Sheet feeder |
-
1986
- 1986-04-24 JP JP9569586A patent/JPS62255330A/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57195049A (en) * | 1981-05-26 | 1982-11-30 | Konishiroku Photo Ind Co Ltd | Cassette replacing device |
| JPS59133144A (en) * | 1982-09-21 | 1984-07-31 | ゼロツクス・コ−ポレ−シヨン | Sheet feeder |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006130349A2 (en) * | 2005-06-01 | 2006-12-07 | Hewlett-Packard Development Company, L.P. | Automatic, lockable and engageable/disengageable media tray |
| WO2006130349A3 (en) * | 2005-06-01 | 2007-02-01 | Hewlett Packard Development Co | Automatic, lockable and engageable/disengageable media tray |
| US7540491B2 (en) | 2005-06-01 | 2009-06-02 | Hewlett-Packard Development Company, L.P. | Automatic, lockable, engageable and disengageable media tray |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0517136B2 (en) | 1993-03-08 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |