JP4391309B2 - Envelope feeder - Google Patents

Envelope feeder Download PDF

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JP4391309B2
JP4391309B2 JP2004137419A JP2004137419A JP4391309B2 JP 4391309 B2 JP4391309 B2 JP 4391309B2 JP 2004137419 A JP2004137419 A JP 2004137419A JP 2004137419 A JP2004137419 A JP 2004137419A JP 4391309 B2 JP4391309 B2 JP 4391309B2
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envelope
conveying
restraining
guide
air
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JP2005320084A (en
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正裕 小倉
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デュプロ精工株式会社
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本発明は、孔版印刷機、複写機あるいはプリンタ等に用いられる封筒給紙装置に関し、特に、封筒を積載し、エア吸着式搬送機構で吸着して、印刷部等に給紙搬送する封筒給紙装置に関する。   The present invention relates to an envelope feeding device used in a stencil printing machine, a copier, a printer, or the like, and more particularly, envelope feeding that stacks envelopes, sucks them by an air adsorption type transport mechanism, and feeds them to a printing unit or the like. Relates to the device.
図13は従来の封筒給紙装置を示しており(特許文献1)、昇降自在な封筒給紙台101上に、前下がり傾斜状に搬送ベルト機構102を配置し、該搬送ベルト機構102に吸引ファン103が設けてある。搬送ベルト機構102の搬送方向と直交する幅方向両側にはサイドガイド104が配置されている。搬送ベルト機構102の前端部には、最下位の封筒を次位(上隣)の封筒から分離するための分離パッド110が配置され、また、積載封筒Paの前端部の上面には錘111が当接している。   FIG. 13 shows a conventional envelope feeding device (Patent Document 1). A conveyor belt mechanism 102 is disposed on an envelope feeding table 101 that can be moved up and down in a slanting front-down manner, and is sucked into the conveyor belt mechanism 102. A fan 103 is provided. Side guides 104 are arranged on both sides in the width direction orthogonal to the conveyance direction of the conveyance belt mechanism 102. A separation pad 110 for separating the lowest envelope from the next (upper adjacent) envelope is disposed at the front end of the transport belt mechanism 102, and a weight 111 is provided on the upper surface of the front end of the loading envelope Pa. It is in contact.
図13の封筒給紙装置では、搬送ベルト機構102の載置面105に封筒Paを積載し、吸引ファン103により最下位の封筒を載置面105に吸着し、搬送ベルト機構102を駆動することにより、前記吸着された最下位の封筒を前方に搬送し、分離パッド110により次位の封筒と分離しつつ、前方へ供給するようになっている。
特開2001−162917号公報。
In the envelope feeding device of FIG. 13, the envelope Pa is stacked on the placement surface 105 of the transport belt mechanism 102, the lowest envelope is adsorbed to the placement surface 105 by the suction fan 103, and the transport belt mechanism 102 is driven. Thus, the sucked lowest envelope is conveyed forward, and is fed forward while being separated from the next envelope by the separation pad 110.
JP 2001-162917 A.
図7は印刷媒体である洋式封筒を示しており、長辺側に折り畳み状のフラップ85を有している。このような洋式封筒Paの表面を印刷する場合には、フラップ85を折り畳んだ状態で、封筒表面を図13の載置面105側に向け、ベルト搬送機構102に積載することになる。   FIG. 7 shows a Western-style envelope, which is a printing medium, and has a folded flap 85 on the long side. When printing the surface of such a Western-style envelope Pa, the envelope surface is loaded on the belt conveyance mechanism 102 with the flap 85 folded, with the surface of the envelope facing the placement surface 105 in FIG.
ところが封筒Paは、フラップ85が少し開いた状態で積載されるため、フラップ側の嵩が増え、フラップ側が高くなるように左右に傾斜した状態となる。この左右の傾斜を修正して封筒の平面性を保つため、図13の装置では、前記錘105で積載封筒Paの前端部を下方に加圧しているが、封筒Paの搬送方向中間部及び後部は解放状態となっているので、封筒後部では、左右に傾斜した状態で残る。したがって、最下位封筒が搬送される場合に、開き状態のフラップ85は、加圧状態の前端部にゆくにしたがい次位の封筒に強くこすれ、フラップ85にしわが寄り、分離パッド110の隙間に詰まり、あるいは分離パッド110の端縁に当接し、給紙が停止することがある。   However, since the envelope Pa is stacked with the flap 85 slightly opened, the flap side is increased in volume, and the envelope Pa is inclined left and right so that the flap side becomes higher. In order to maintain the flatness of the envelope by correcting the left and right inclination, the front end of the stacked envelope Pa is pressed downward by the weight 105 in the apparatus of FIG. Since it is in a released state, it remains tilted left and right at the rear of the envelope. Therefore, when the lowermost envelope is conveyed, the flap 85 in the open state is rubbed strongly against the next envelope as it goes to the front end portion in the pressurized state, the flap 85 is wrinkled, and the gap between the separation pads 110 is clogged. Alternatively, the sheet feeding may stop due to contact with the edge of the separation pad 110.
本発明は、積載した封筒をエア吸着式搬送ベルト機構で吸着し、給紙する封筒給紙装置において、給紙される封筒の状態を、積載封筒全体が平面状かつ水平状になるように維持し、フラップのしわ、封筒の詰まり又は給紙ミスを防止できるようにすることである。   According to the present invention, in an envelope feeding apparatus that sucks and feeds a loaded envelope by an air adsorption type transport belt mechanism, the state of the fed envelope is maintained so that the entire loaded envelope is flat and horizontal. In addition, it is possible to prevent flap wrinkles, envelope clogging, or paper feeding errors.
上記課題を解決するため、本願発明は、印刷媒体として封筒を積載すると共に略水平姿勢に配置された昇降可能な給紙台(21)と、封筒搬送方向と直交する幅方向両側に配置される積載封筒側端規制用の側端ガイド(22)と、積載封筒の封筒搬送方向の後端規制用の後端ガイド(27)と、を備えた封筒給紙装置において、給紙台(21)の封筒搬送方向の前部の上方に配置されて積載封筒の最上位封筒を略水平な搬送下面(56a)にエア吸着して搬送するエア吸着式搬送ベルト機構(25)と、前記エア吸着式搬送ベルト機構(25)よりも搬送方向の後方側であって、封筒幅方向両側端部に配置されると共に、略水平な抑止面(23b)を有し前後方向に延びる一対の抑止部材(23)と、前記給紙台(21)を略水平姿勢で昇降させる昇降機構と、前記昇降機構の駆動を制御する制御装置(47)と、を備え、前記抑止部材(23)の抑止面(23b)は、エア吸着式搬送ベルト機構(25)の搬送下面(56a)と同じ高さに位置し、前記制御装置(47)は、前記給紙台(21)上の最上位封筒がエア吸着式搬送ベルト機構(25)の搬送下面(56a)及び抑止部材(23)の抑止面(23b)に当接した後も、給紙台(21)を所定量上昇させ、エア吸着式搬送ベルト機構(25)の搬送下面(56a)及び抑止部材(23)の抑止面(23b)と、給紙台(21)の間で、積載封筒全体が平面状かつ水平状に上下方向から圧縮されるように、昇降機構を制御することを特徴としている。 In order to solve the above-mentioned problems, the present invention is arranged on both sides in the width direction perpendicular to the envelope conveying direction, with the envelope as a print medium stacked and a vertically movable sheet feeding table (21) arranged in a horizontal posture. In an envelope feeding device comprising a side guide (22) for restricting the loading envelope side end and a rear end guide (27) for restricting the trailing end of the loaded envelope in the envelope conveying direction, the sheet feeding table (21) An air adsorbing type conveyor belt mechanism (25) disposed above the front portion in the envelope conveying direction and adsorbing and conveying the uppermost envelope of the stacking envelope to a substantially horizontal lower conveying surface (56a), and the air adsorbing type A pair of restraining members (23 ) which are disposed at both ends of the envelope width direction at the rear side in the transport direction from the transport belt mechanism (25) and have a substantially horizontal restraining surface (23b) and extend in the front-rear direction. ), An elevating mechanism that elevates and lowers the paper feed table (21) in a substantially horizontal posture, and a control device (47) that controls driving of the elevating mechanism And the restraining surface (23b) of the restraining member (23) is located at the same height as the transport lower surface (56a) of the air adsorption transport belt mechanism (25), and the control device (47) Even after the uppermost envelope on the sheet feeding table (21) abuts the conveyance lower surface (56a) of the air adsorption type conveying belt mechanism (25) and the deterring surface (23b) of the deterring member (23), the sheet feeding table (21) is raised by a predetermined amount , and a stacking envelope is formed between the conveyance lower surface (56a) of the air adsorption type conveyance belt mechanism (25) and the deterrent surface (23b) of the deterring member (23) and the paper feed table (21). The elevating mechanism is controlled so that the whole is compressed in a flat and horizontal manner from the up and down direction .
(1)積載封筒が水平姿勢に維持されるように、積載封筒の上側のエア吸着式搬送機構の搬送下面及び抑止部材の抑止面と、積載封筒の下側の給紙台の間で、積載封筒全体を上下方向から保持するようにし、そして、最上位封筒を搬送下面に吸着して、給紙するようにしているので、最上位封筒を、捌き用隙間に詰まらせたり、捌き用板等に衝突させたりすることなく給紙でき、円滑な給紙を維持することができる。   (1) Loading is performed between the lower conveyance surface of the air adsorption type conveyance mechanism on the upper side of the loading envelope and the deterring surface of the deterring member, and the sheet feeding table below the loading envelope so that the loading envelope is maintained in a horizontal posture. The entire envelope is held from above and below, and the uppermost envelope is attracted to the lower surface of the transport and fed so that the uppermost envelope can be clogged in the separation gap, The paper can be fed without colliding with the printer, and smooth paper feeding can be maintained.
(2)最上位封筒の上面を搬送ベルトの搬送下面で押さえると共にエア吸着し、搬送するので、積載封筒を上下から挟圧する圧力は、積載封筒の積載量の減少に応じて、給紙台の昇降により一定に保持できる。したがって、圧力過多によるフラップのしわの発生や、それによる詰まり等も防ぐことができる。   (2) Since the upper surface of the uppermost envelope is pressed by the lower conveyance surface of the conveyor belt and is adsorbed and conveyed, the pressure for clamping the stacking envelope from above and below depends on the decrease in the loading amount of the stacking envelope. It can be kept constant by moving up and down. Therefore, it is possible to prevent occurrence of flap wrinkles due to excessive pressure, clogging due to the occurrence of flaps, and the like.
(3)最上位封筒の少なくとも幅方向両端部を抑止するようにしていると、最上位封筒の水平姿勢を維持しながらも、封筒と抑止面との間の摩擦を少なくでき、円滑な封筒給紙作用を維持できる。   (3) If at least both ends in the width direction of the uppermost envelope are restrained, friction between the envelope and the restraining surface can be reduced while maintaining the horizontal posture of the uppermost envelope, and smooth envelope feeding Paper action can be maintained.
図1〜図11は本発明の実施の形態であって、本発明に係る封筒給紙装置を孔版印刷機に備えた例を示しており、説明の都合上、図1中に記載してあるように、封筒搬送方向(矢印F)の上流側を「後側」、封筒搬送方向Fの下流側を「前側」と称し、また、封筒搬送方向と直交する封筒幅方向を「左右方向」として、以下説明する。   1 to 11 show an embodiment of the present invention, which shows an example in which an envelope feeding device according to the present invention is provided in a stencil printing machine, which is shown in FIG. 1 for convenience of explanation. Thus, the upstream side of the envelope transport direction (arrow F) is referred to as “rear side”, the downstream side of the envelope transport direction F is referred to as “front side”, and the envelope width direction orthogonal to the envelope transport direction is referred to as “left-right direction”. This will be described below.
[孔版印刷機の全体構造]
図1は透視して示す孔版印刷機の概略側面図であり、印刷機本体1には、後端部に給紙装置2が設けられ、前端部に紙受台19が設けられている。
[Overall structure of stencil printing machine]
FIG. 1 is a schematic side view of a stencil printing machine shown in perspective, and the printing machine main body 1 is provided with a paper feeding device 2 at the rear end portion and a paper tray 19 at the front end portion.
印刷機本体1内には、前後方向の概ね中間部に画像形成ユニット5が設けられ、画像形成ユニット5の上部後側には製版装置6が設けられ、画像形成ユニット5の上部前側には排版装置7が設けられ、画像形成ユニット5の画像形成部の前側には排紙装置3が設けられている。   In the printing machine main body 1, an image forming unit 5 is provided at an approximately middle portion in the front-rear direction, a plate making device 6 is provided at the upper rear side of the image forming unit 5, and a plate discharge is provided at the upper front side of the image forming unit 5. A device 7 is provided, and a paper discharge device 3 is provided on the front side of the image forming unit of the image forming unit 5.
画像形成ユニット5は、上下に対向配置された印刷用版胴10と押圧ローラ11等から構成されており、印刷用版胴10の内周面にはインクローラ12が配置され、前記製版装置6で製版された孔版原紙Nが版胴10に装着されるようになっている。   The image forming unit 5 is composed of a printing plate cylinder 10 and a pressing roller 11 which are arranged opposite to each other in the vertical direction. An ink roller 12 is arranged on the inner peripheral surface of the printing plate cylinder 10. The stencil sheet N made in step 1 is attached to the plate cylinder 10.
製版装置6はサーマルヘッド9で孔版原紙Nを製版し、画像形成ユニット5の版胴10に装着するようになっている。   The plate making apparatus 6 makes a stencil sheet N with a thermal head 9 and attaches it to the plate cylinder 10 of the image forming unit 5.
排版装置7は前記版胴10に装着された使用済みの孔版原紙Nを取り外し、排版ロール13として巻き取るようになっている。   The plate discharging device 7 removes the used stencil sheet N mounted on the plate cylinder 10 and winds it up as a plate discharging roll 13.
画像形成ユニット5の後部近傍には、上下一対のタイミングローラ15が配置されており、前記版胴10の駆動と同期して適宜タイミングで回転し、封筒Paを画像形成ユニット5へ送り込むようになっている。   A pair of upper and lower timing rollers 15 are disposed in the vicinity of the rear portion of the image forming unit 5, and rotate at an appropriate timing in synchronization with the drive of the plate cylinder 10 to feed the envelope Pa into the image forming unit 5. ing.
排紙装置3は、搬送ベルト16とエア吸引機構17からなり、搬送ベルト16の搬送上面に印刷後の封筒Paを吸着し、紙受台19へ排出するようになっている。   The paper discharge device 3 includes a conveyance belt 16 and an air suction mechanism 17, and adsorbs the printed envelope Pa on the conveyance upper surface of the conveyance belt 16 and discharges the envelope Pa to the paper tray 19.
[封筒給紙装置全体構造]
封筒給紙装置2は、封筒専用ではなく、普通紙及び厚紙の給紙にも利用できるものであり、略水平姿勢に配置された昇降可能な給紙台21と、該給紙台21の左右両側(封筒幅方向両側端)に配置された一対の側端ガイド22と、給紙台21の前部上方に配置されたエア吸着式搬送ベルト機構25と、給紙台21の後部に配置された封筒後端規制用の後端ガイド27と、給紙台21の前端に隣接するように立設された前端ガイド28と、該前端ガイド28の上端前方部に配置されたエア吹出し機構30と、給紙台21の上方に配置された複数の上限位置センサー31,32と、エア吸着式搬送ベルト機構25よりも後方に配置されると共に側端ガイド22の上端に取り付けられた抑止部材23等を備えている。
[Envelope feeder overall structure]
The envelope feeder 2 is not dedicated to envelopes but can also be used for feeding plain paper and thick paper. The envelope feeder 2 can be moved up and down arranged in a substantially horizontal posture, A pair of side end guides 22 disposed on both sides (both ends in the envelope width direction), an air adsorption type transport belt mechanism 25 disposed above the front portion of the paper feed table 21, and a rear portion of the paper feed table 21. A rear end guide 27 for restricting the rear end of the envelope, a front end guide 28 erected so as to be adjacent to the front end of the paper feed table 21, and an air blowing mechanism 30 disposed at the front end of the front end guide 28. , A plurality of upper limit position sensors 31 and 32 disposed above the sheet feed table 21, a restraining member 23 disposed at the rear of the air adsorption type transport belt mechanism 25 and attached to the upper end of the side end guide 22, etc. It has.
[給紙台の昇降機構]
図3は給紙台21の昇降機構を示しており、給紙台21の左右両側方に配置された側板29に略垂直なガイド孔33及びガイドレール34が形成されており、給紙台21の左右両側端には前記ガイド孔33を貫通するガイド軸35が設けられると共に該ガイド軸35にガイドローラ36が支持されている。
[Feeding mechanism of paper feed stand]
FIG. 3 shows an elevating mechanism of the paper feed table 21. Guide holes 33 and guide rails 34 that are substantially perpendicular to the side plates 29 arranged on the left and right sides of the paper feed table 21 are formed. Guide shafts 35 penetrating through the guide holes 33 are provided at both left and right ends of the guide shafts, and guide rollers 36 are supported on the guide shafts 35.
ガイド軸35の先端部は昇降部材37に支持されている。昇降部材37に連結された駆動チェーン38は、上方に延び、ターンスプロケット40を介して下方に折り返し、下方の駆動スプロケット41に係合し、さらに上方に折り返して、コイルばね42に連結している。該コイルばね42は上方に延び、側板に設けられたブラケット43に係合している。前記駆動スプロケット41はピニオンギヤ機構45を介して駆動モータ46に連動連結している。すなわち、駆動モータ46により駆動スプロケット41を矢印B1方向に回転することにより、コイルばね42に援助されながら駆動チェーン38を矢印B2方向に移動し、昇降部材37を介して給紙台21を上昇するようになっており、コントローラ(制御装置)47により給紙台21を上昇位置(仮想線)で停止できるようになっている。駆動モータ46はコントローラ47を介して前記上限センサー31,32及び印刷スタートスイッチ〔又は昇降用スイッチ)48に接続しており、給紙台21が下降位置の場合は、印刷スタートスイッチ48を押すことにより上昇させることができると共に、選択した上限センサー31,32による封筒接触の検出及び封筒離脱の検出にしたがって、自動的に停止及び上昇するように制御される。詳しい制御は後述する。   The distal end portion of the guide shaft 35 is supported by the elevating member 37. The drive chain 38 connected to the elevating member 37 extends upward, is folded downward via the turn sprocket 40, is engaged with the lower drive sprocket 41, is further folded upward, and is coupled to the coil spring 42. . The coil spring 42 extends upward and engages with a bracket 43 provided on the side plate. The drive sprocket 41 is linked to a drive motor 46 through a pinion gear mechanism 45. That is, the drive sprocket 41 is rotated in the direction of arrow B 1 by the drive motor 46, so that the drive chain 38 is moved in the direction of arrow B 2 while being assisted by the coil spring 42, and the paper feed table 21 is raised via the elevating member 37. Thus, the controller (control device) 47 can stop the paper feed table 21 at the raised position (virtual line). The drive motor 46 is connected to the upper limit sensors 31 and 32 and the print start switch (or elevation switch) 48 via the controller 47. When the paper feed base 21 is in the lowered position, the print start switch 48 is pushed. And is controlled to automatically stop and rise according to the detection of the envelope contact and the detection of the separation of the envelope by the selected upper limit sensors 31 and 32. Detailed control will be described later.
[後端ガイド]
図1の後端ガイド27は略垂直姿勢に形成されると共に下端に支持台部27aが形成されており、該支持台部27aにはたとえば磁石が内蔵あるいは貼着され、給紙台21上の所望の前後方向位置に固定できるようになっている。
[Rear edge guide]
The rear end guide 27 in FIG. 1 is formed in a substantially vertical posture, and a support base portion 27a is formed at the lower end. For example, a magnet is built in or attached to the support base portion 27a. It can be fixed at a desired longitudinal position.
[側端ガイド]
図4は側端ガイド22の斜視図であり、側端ガイド22は、前後方向に間隔を置いて立設された複数の柱部材50と、各柱部材50の上下端部をそれぞれ連結する梁部材51から構成されており、各柱部材50は、給紙台21に形成された複数の溝53内をそれぞれ上下方向に貫通すると共に、溝53を左右方向に移動できるようになっている。側端ガイド22を左右に駆動するための駆動機構は特に図示しないが、給紙台21の封筒幅方向の中央基準線O1に対して、両側端ガイド22を左右対称に移動するようになっている。すなわち、中央振分式で積載封筒幅を設定できるようになっている。
[Side end guide]
FIG. 4 is a perspective view of the side end guide 22. The side end guide 22 is a beam that connects a plurality of column members 50 erected at intervals in the front-rear direction and the upper and lower ends of each column member 50. Each column member 50 includes a plurality of grooves 53 formed in the sheet feed table 21 in the vertical direction, and can move in the horizontal direction in the grooves 53. A drive mechanism for driving the side end guides 22 to the left and right is not particularly illustrated, but the side end guides 22 are moved symmetrically with respect to the center reference line O1 in the envelope width direction of the paper feed table 21. Yes. That is, the stacking envelope width can be set by the central distribution method.
[エア吸着式搬送ベルト機構]
図1において、前記エア吸着式搬送ベルト機構25は、前後の回転ローラ55と、両回転ローラ55間に巻き掛けられた搬送ベルト56と、搬送ベルト56内に配置された吸引ボックス57等を備えており、吸引ボックス57は吸引ファン58に接続している。
[Air adsorption type conveyor belt mechanism]
In FIG. 1, the air adsorbing transport belt mechanism 25 includes front and rear rotating rollers 55, a transport belt 56 wound around the both rotating rollers 55, a suction box 57 disposed in the transport belt 56, and the like. The suction box 57 is connected to a suction fan 58.
図2はエア吸着式搬送ベルト機構25の平面図であり、搬送ベルト56は左右方向に間隔を置いて複数本配置されており、搬送ベルト56全体の搬送幅W1は、最大サイズの用紙幅(封筒幅)W2、すなわち側端ガイド22の最大幅W2よりも広く設定されている。各搬送ベルト56には多数のエア通過開口59が形成され、吸引ボックス57の下面には多数のエア吸引スリット60が形成され、該エア吸引スリット60及び前記開口59を介して吸引されるエアにより、図9のように搬送ベルト56の搬送下面56aに最上位封筒Pa1を吸着し、前方に搬送するようになっている。   FIG. 2 is a plan view of the air adsorption type conveying belt mechanism 25. A plurality of conveying belts 56 are arranged at intervals in the left-right direction, and the conveying width W1 of the entire conveying belt 56 is the maximum sheet width ( Envelope width) W2, that is, wider than the maximum width W2 of the side end guide 22 is set. A large number of air passage openings 59 are formed in each conveyor belt 56, and a large number of air suction slits 60 are formed on the lower surface of the suction box 57. Air is sucked through the air suction slit 60 and the openings 59. As shown in FIG. 9, the uppermost envelope Pa1 is adsorbed to the lower conveyance surface 56a of the conveyance belt 56 and conveyed forward.
[エア吹出し機構]
図1において、エア吹出し機構30は、積載封筒Paの上端部前方に配置されたエア吹出しボックス61と、該エア吹出しボックス61にエアホース62等を介して接続するブロア63等から構成されており、積載封筒Paの上端部の前端に向けて後向きにエアを吹き出すようになっている。エア吹出し機構30の直後に配置されている前端ガイド28は、図4に示すように上端部28aにエア吹出しボックス61からのエアが後方に通過するように、複数の切欠き28bが形成されている。また、前端ガイド28の上端部28aが捌き部として機能するように、図1に示すように、上端部28aの上端は搬送下面56aに対して所定の捌き隙間Dを置いて対向している。
[Air blowing mechanism]
In FIG. 1, the air blowing mechanism 30 includes an air blowing box 61 disposed in front of the upper end of the loading envelope Pa, a blower 63 connected to the air blowing box 61 via an air hose 62, and the like. Air is blown backward toward the front end of the upper end portion of the loading envelope Pa. As shown in FIG. 4, the front end guide 28 disposed immediately after the air blowing mechanism 30 has a plurality of notches 28 b formed in the upper end portion 28 a so that air from the air blowing box 61 passes rearward. Yes. Further, as shown in FIG. 1, the upper end of the upper end portion 28a is opposed to the conveying lower surface 56a with a predetermined separation gap D so that the upper end portion 28a of the front end guide 28 functions as a separation portion.
[抑止部材]
図4において、左右の側端ガイド22の上端には、前後方向に延びる支持台66がそれぞれ固着されており、各支持台66の封筒配置側、すなわち中央基準線O1側の端壁66aに、それぞれ上下方向位置調節可能に抑止部材23が取り付けられている。各抑止部材23はステンレス又はアルミ等の金属でできており、垂直姿勢の本体部23aの下端が、中央基準線O1側に水平に折り曲げられており、該折曲げ部分の下面が、用紙の左右両端部を上方から抑止する抑止面23bとなっている。
[Deterrence member]
In FIG. 4, a support base 66 extending in the front-rear direction is fixed to the upper ends of the left and right side end guides 22, respectively, on the envelope arrangement side of each support base 66, that is, on the end wall 66a on the center reference line O1 side. A restraining member 23 is attached so that the vertical position can be adjusted. Each restraining member 23 is made of a metal such as stainless steel or aluminum, and the lower end of the main body portion 23a in a vertical posture is horizontally bent toward the center reference line O1, and the lower surface of the bent portion is the left and right sides of the sheet. It is a deterrent surface 23b that deters both ends from above.
図5は、抑止部材23の分解斜視図であり、支持台66の前記端壁66aには、前後方向に一定間隔を置いて1対の筒状ガイドピン64が固着されており、各ガイドピン64が固着されている前記端壁66aの裏面側には、ガイドピン64と同一軸芯上にナット68がそれぞれ溶着されている。一方、抑止部材23の本体部23aには、前記ガイドピン64に対応する位置に、前下がり傾斜状のガイド長孔71が形成されている。各ガイド長孔71をガイドピン64に嵌合し、抜止めワッシャ72に挿通したボルト73を、ガイドピン64内に挿通すると共に端壁66aを貫通させ、ナット68に螺着することにより、抑止部材23を支持台66に対し、ガイド長孔長さ方向移動可能、かつ脱落不能に保持している。   FIG. 5 is an exploded perspective view of the restraining member 23, and a pair of cylindrical guide pins 64 are fixed to the end wall 66 a of the support base 66 at regular intervals in the front-rear direction. Nuts 68 are welded on the same axis as the guide pins 64 on the back side of the end wall 66a to which the 64 is fixed. On the other hand, the main body portion 23 a of the restraining member 23 is formed with a guide long hole 71 having a downwardly inclined shape at a position corresponding to the guide pin 64. The guide elongated holes 71 are fitted into the guide pins 64, and the bolts 73 inserted into the retaining washers 72 are inserted into the guide pins 64, penetrate the end walls 66a, and are screwed into the nuts 68 to suppress the bolts 73. The member 23 is held with respect to the support base 66 so as to be movable in the length direction of the guide slot and not to fall off.
抑止部材23を3つの上下方向位置(高さ)に選択的に固定するために、デテントボール74と、高さの異なる第1、第2及び第3の位置決め孔75a、75b、75cと、ボール押さ板(板ばね)76等からなるデテント機構を備えている。前記3つの位置決め孔75a、75b,75cは、前記ガイド長孔71と平行に前下がり状に配列されている。デテントボール74は本体部23aに形成されたボール挿入孔77に挿入され、押さえ板76の一端部により支持台66側へ弾性的に押さえ付けられ、3つの位置きめ孔75a,75b、75cに選択的に係合するようになっている。勿論、ボール挿入孔77の内径はボール74が左右方向に移動可能となる大きさであり、一方、位置決め孔75a、75b、75cの径は、ボール74の径よりも小径となっている。   In order to selectively fix the restraining member 23 at three vertical positions (heights), the detent ball 74, the first, second and third positioning holes 75a, 75b and 75c having different heights, the ball A detent mechanism including a pressing plate (plate spring) 76 and the like is provided. The three positioning holes 75a, 75b, and 75c are arranged in a front-down manner in parallel with the guide elongated hole 71. The detent ball 74 is inserted into a ball insertion hole 77 formed in the main body portion 23a, and is elastically pressed to the support base 66 side by one end portion of the pressing plate 76, and is selected from the three positioning holes 75a, 75b, and 75c. Engaging. Of course, the inner diameter of the ball insertion hole 77 is such that the ball 74 can move in the left-right direction, while the diameters of the positioning holes 75a, 75b, and 75c are smaller than the diameter of the ball 74.
図6は図5の最も低い第1の位置きめ孔75aを通る面で切断した縦断面図である。図6の状態のように、最も低い第1の位置きめ孔75aにボール74を係合させた場合には、下端の抑止面23bの上下方向位置L1は搬送下面56aよりも低くなり、中間の第2の位置決め孔75bにボール74を係合させた場合には、下端抑止面23bの上下方向位置L2は搬送下面56aと同じ高さになり、最も高い第3の位置決め孔75cにボール74を係合させた場合には、下端抑止面23bの上下方向位置L3は、搬送下面56aよりも高くなるように構成されている。   FIG. 6 is a longitudinal sectional view taken along a plane passing through the lowest first positioning hole 75a in FIG. When the ball 74 is engaged with the lowest first position hole 75a as in the state of FIG. 6, the vertical position L1 of the lower end restraining surface 23b is lower than the conveying lower surface 56a, When the ball 74 is engaged with the second positioning hole 75b, the vertical position L2 of the lower end restraining surface 23b becomes the same height as the conveyance lower surface 56a, and the ball 74 is inserted into the highest third positioning hole 75c. When engaged, the vertical position L3 of the lower end restraining surface 23b is configured to be higher than the conveying lower surface 56a.
本実施の形態では、第1の位置きめ孔75aに対応する下端抑止面23bの位置L1を普通用紙の抑止位置とし、最も高い第3の位置きめ孔75cに対応する下端抑止面23bの位置L3を退避位置とし、そして、中間の第2の位置決め孔75bに対応する下端抑止面23bの位置L2を、洋式封筒の抑止位置として利用する。   In the present embodiment, the position L1 of the lower end restraining surface 23b corresponding to the first position chamfering hole 75a is set as the normal sheet inhibiting position, and the position L3 of the lower end inhibiting surface 23b corresponding to the highest third position chamfering hole 75c. And the position L2 of the lower end restraining surface 23b corresponding to the intermediate second positioning hole 75b is used as the restraining position of the Western envelope.
[上限センサー]
図8において、前側の第1の上限センサー31はエア吸着式搬送ベルト機構25の搬送経路内に配置されており、積載封筒Paの前半部高さを検出し、後側の第2の上限センサー32は抑止部材23の前後方向抑止範囲内に配置され、積載封筒Paの後半部の高さを検出する。いずれの上限センサー31,32も前述のようにコントローラ47に接続し、最上位封筒Pa1に一定圧で接触することにより、封筒検知信号をコントローラ47に入力する。コントローラ47は、上限センサー31,32の封筒検知から一定時間経過(遅延)した後、給紙台21の上昇運動を停止するように構成されている。すなわち、検知時点から所定量だけ給紙台21を上昇させた後、給紙台21を停止するように構成されている。
[Upper limit sensor]
In FIG. 8, the first upper limit sensor 31 on the front side is disposed in the conveyance path of the air adsorption type conveyance belt mechanism 25, detects the height of the front half of the stacking envelope Pa, and the second upper limit sensor on the rear side. 32 is arranged in the front-rear direction restraint range of the restraining member 23 and detects the height of the latter half of the stacking envelope Pa. Both the upper limit sensors 31 and 32 are connected to the controller 47 as described above, and contact the uppermost envelope Pa1 with a constant pressure to input an envelope detection signal to the controller 47. The controller 47 is configured to stop the ascending motion of the paper feed table 21 after a predetermined time has elapsed (delayed) from the envelope detection of the upper limit sensors 31 and 32. That is, the sheet feeding table 21 is stopped after being raised by a predetermined amount from the detection time point.
[洋式封筒]
たとえば図7は前述のように印刷媒体として使用される洋式封筒Paであり、長辺に少し開いた状態のフラップ85を有しており、表面(フラップ85を折り畳む側と反対側)を上側にして積載され、長手方向に搬送される。
[Western envelope]
For example, FIG. 7 shows a Western-style envelope Pa used as a printing medium as described above, and has a flap 85 that is slightly opened on the long side, with the surface (the side opposite to the side where the flap 85 is folded) facing upward. And then transported in the longitudinal direction.
[洋式封筒の給紙印刷作業]
図8及び図9は、洋式封筒の表面を印刷する場合の作業工程を示しており、また、図10及び図11は、前記図8及び図9の工程に対応する背面図である。
[Feeding and printing for Western-style envelopes]
8 and 9 show work steps when printing the surface of a Western-style envelope, and FIGS. 10 and 11 are rear views corresponding to the steps of FIGS.
(1)給紙印刷前の各種設定
図8において、抑止部材23は、抑止面23bが搬送下面56aと同じ洋式封筒用抑止位置L2にくるように上下方向の位置が設定されている。上限センサーとしては後側の第2の上限センサー32を利用している。図9のように、給紙台21の上昇停止時の積載封筒Paの高さH1が、搬送下面56aと同じ位置L2となるように上限センサー32の検知位置を設定しているが、上限センサー32による封筒検知時から一定時間経過した後、給紙台21を停止させるようになっていることにより、給紙台21の上昇停止時、積載封筒Paは、上側の抑止面23b及び搬送下面56aと、下側の給紙台21の間で、上下方向に一定量だけ圧縮した状態で保持されるようになっている。エア吹出し機構30は利用しない。
(1) Various settings before paper feed printing In FIG. 8, the restraining member 23 is set in the vertical direction so that the restraining surface 23b is at the same western envelope restraining position L2 as the transport lower surface 56a. As the upper limit sensor, the second upper limit sensor 32 on the rear side is used. As shown in FIG. 9, the detection position of the upper limit sensor 32 is set so that the height H1 of the stacking envelope Pa when the ascent of the paper feed base 21 is stopped is the same position L2 as the lower conveyance surface 56a. After a certain period of time has elapsed from the time when the envelope is detected by 32, the sheet feed table 21 is stopped. Thus, when the sheet feed table 21 is lifted and stopped, the stacking envelope Pa has the upper restraining surface 23b and the conveyance lower surface 56a. And the lower sheet feed table 21 are held in a state compressed by a certain amount in the vertical direction. The air blowing mechanism 30 is not used.
(2)洋式封筒の積載及び上昇
給紙前、図8のように下降位置の給紙台21に、たとえば表面を上に向けた多数の洋式封筒Paを積載する。図10は積載時の背面図であり、各洋式封筒Paは、フラップ85が斜め下方に少し開いた状態で積載されるため、フラップ側の嵩が増え、フラップ側が高くなるように傾斜した状態となり、上方の洋式封筒Paにゆくに従い、前記左右の傾斜は大きくなっている。封筒積載後、図8の印刷スタートボタン48を押すことにより、給紙台21を上昇させる。なお、エア吹出し機構30は作動していない。
(2) Loading and lifting of Western envelopes Before feeding, a large number of Western envelopes Pa, for example, with the surface facing up, are stacked on the sheet feed table 21 in the lowered position as shown in FIG. FIG. 10 is a rear view at the time of loading, and each Western-style envelope Pa is loaded in a state where the flap 85 is slightly opened downward in the oblique direction, so that the flap side increases in volume and the flap side becomes inclined so that the flap side becomes higher. The left and right inclinations increase as the western envelope Pa moves upward. After the envelope is loaded, the paper feed base 21 is raised by pressing the print start button 48 in FIG. Note that the air blowing mechanism 30 is not operating.
(3)給紙台の停止
図9において、第2の上限センサー32により最上位封筒Pa1を検知した後、一定時間遅れて給紙台21は停止する。すなわち、最上位封筒Pa1が搬送下面56a及び抑止面23bに当接した後も給紙台21は所定量上昇するので、積載封筒Paは上下方向に圧縮され、それによりフラップ85が洋式封筒Paの裏面に略接触する程度まで閉じられると共に、最上位の封筒Pa1は、後方から見て傾斜姿勢から水平姿勢に変化する。また、図9のように、抑止面23bと搬送下面56aは同一高さL2に維持されているので、側方から見た場合でも最上位の洋式封筒Pa1は水平姿勢に保たれている。すなわち、最上位の洋式封筒Pa1は、フラップ85が封筒本体から殆ど下方に張り出すことなく、封筒本体と略同じ平面内に折り畳まれた状態となると共に、封筒全体が搬送下面56aに沿った水平状態に維持される。
(3) Stop of the paper feed tray In FIG. 9, after the uppermost envelope Pa1 is detected by the second upper limit sensor 32, the paper feed stand 21 stops with a certain delay. That is, even after the uppermost envelope Pa1 comes into contact with the lower conveyance surface 56a and the restraining surface 23b, the sheet feeding table 21 is raised by a predetermined amount, so that the stacking envelope Pa is compressed in the vertical direction, so that the flap 85 is The uppermost envelope Pa <b> 1 is changed from an inclined posture to a horizontal posture as viewed from the rear, while being closed to the extent that it substantially contacts the back surface. Further, as shown in FIG. 9, since the restraining surface 23b and the transport lower surface 56a are maintained at the same height L2, even when viewed from the side, the uppermost Western envelope Pa1 is maintained in a horizontal posture. That is, the uppermost Western-style envelope Pa1 is in a state in which the flap 85 is folded almost in the same plane as the envelope main body without projecting almost downward from the envelope main body, and the entire envelope is horizontal along the conveyance lower surface 56a. Maintained in a state.
(4)吸着、搬送
図9の状態において、エア吸着式搬送ベルト機構25を駆動することにより、水平な最上位封筒Pa1を搬送下面56aに吸着し、搬送ベルト56により前方に搬送する。最上位封筒Pa1は、前記のように突出部のない平板状で、しかも水平姿勢に維持されて前方に送り出されるので、捌き用隙間Dに詰まったり、衝突したりすることなく、円滑に前方に送り出される。
(4) Adsorption and conveyance In the state of FIG. 9, the air adsorption type conveyance belt mechanism 25 is driven to adsorb the horizontal uppermost envelope Pa <b> 1 to the conveyance lower surface 56 a and convey it forward by the conveyance belt 56. As described above, the uppermost envelope Pa1 has a flat plate shape without a protruding portion, and is maintained in a horizontal posture and is fed forward, so that it can be smoothly forwarded without clogging or colliding with the separation gap D. Sent out.
(5)印刷
図1において、タイミングローラ15に送り込まれた最上位封筒Pa1は、版胴10と押圧ローラ11の間の画像形成部に所定タイミングで送り込まれ、印刷される。
(5) Printing In FIG. 1, the uppermost envelope Pa1 sent to the timing roller 15 is sent to the image forming section between the plate cylinder 10 and the pressing roller 11 at a predetermined timing and printed.
(6)排紙
印刷後の封筒Pa1は、排紙機構3を経て紙受台19に排出される。
(6) Paper discharge The envelope Pa1 after printing is discharged to the paper tray 19 through the paper discharge mechanism 3.
(7)給紙台の昇降制御
図9において、印刷作業が進み、積載封筒Paの高さH1が搬送下面56aよりも低くなって第2の上限センサー32から離れると、コントローラ47からの指令により給紙台21が上昇し、そして再度上限センサー32が洋式封筒Paを検知すると、一定時間遅れて給紙台21を停止させる。印刷作業中は、前記第2の上限センサー32の検知による給紙台21の昇降停止動作が繰り返され、所定枚数の洋式封筒Paが印刷される。
(7) Elevating Control of Paper Feeding Table In FIG. 9, when the printing operation proceeds and the height H1 of the stacked envelope Pa becomes lower than the conveyance lower surface 56a and moves away from the second upper limit sensor 32, a command from the controller 47 When the paper feed base 21 is raised and the upper limit sensor 32 detects the Western envelope Pa again, the paper feed base 21 is stopped after a certain delay. During the printing operation, the raising / lowering stopping operation of the paper feed tray 21 by the detection of the second upper limit sensor 32 is repeated, and a predetermined number of Western-style envelopes Pa are printed.
[和式封筒の印刷]
封筒給紙装置2は、図12に示すような短辺にフラップ86を有する和式封筒Pcにも利用される。和式封筒Pcを積載する場合には、たとえば図12のようにフラップ86を封筒本体から延長する方向に全開状態とし、そして、フラップ86が搬送方向の後端位置にくるように積載する。このようにフラップ86を後端に位置させることにより、前記洋式封筒Paと比べて前方からのエアを封筒内に取り込んで膨らむ恐れが無いので、エア吹出し機構30も利用し、前方からエアを供給することにより、捌き作用を促進する。和式封筒Pcを積載した場合には、フラップ86とは反対側の糊付け済み折返部87が重なることにより、該糊付け済み折返部87が嵩張り、搬送方向Fの上流側が前上がりに傾斜することが考えられるので、図1の前側の第1の上限センサー31を利用するのが好ましい。
[Japanese envelope printing]
The envelope feeder 2 is also used for a Japanese envelope Pc having a flap 86 on the short side as shown in FIG. When stacking the Japanese envelope Pc, for example, as shown in FIG. 12, the flap 86 is fully opened in the direction extending from the envelope body, and the flap 86 is stacked so as to be at the rear end position in the conveying direction. By positioning the flap 86 at the rear end in this way, there is no risk of air from the front being taken into the envelope and swelling compared to the Western envelope Pa, so the air blowing mechanism 30 is also used to supply air from the front. To promote the whispering effect. When the Japanese envelope Pc is loaded, the glued folded part 87 on the side opposite to the flap 86 is overlapped, so that the glued folded part 87 is bulky and the upstream side in the transport direction F is inclined upward. Therefore, it is preferable to use the first upper limit sensor 31 on the front side in FIG.
[発明のその他の実施の形態]
(1)前記各実施の形態は、孔版印刷機の給紙装置に適用した例であるが、勿論、その他の装置、たとえば、デジタル複写機、シートカッター、イメージリーダ等の給紙装置に適用することも可能である。
[Other Embodiments of the Invention]
(1) Each of the above embodiments is an example applied to a paper feeding device of a stencil printing machine, but of course, it is applicable to other devices such as a paper feeding device such as a digital copying machine, a sheet cutter, and an image reader. It is also possible.
(2)上限センサーは、用紙(封筒)の種類に応じて第1、第2のいずれの上限センサーを選択することが可能である。   (2) The upper limit sensor can select either the first or second upper limit sensor according to the type of paper (envelope).
(3)第1及び第2の上限センサー31、32の両方を同時に用いて封筒Paの水平を検出するようにすることもできる。これによると、両上限センサー31、32が封筒検出時は封筒が水平状態であると判断することができる。   (3) It is possible to detect the level of the envelope Pa by using both the first and second upper limit sensors 31 and 32 simultaneously. According to this, when the upper limit sensors 31 and 32 detect the envelope, it can be determined that the envelope is in a horizontal state.
本発明に係る給紙装置を備えた孔版印刷機の概略側面図である。1 is a schematic side view of a stencil printing machine provided with a paper feeding device according to the present invention. 図1の給紙装置の平面図である。FIG. 2 is a plan view of the sheet feeding device in FIG. 1. 図1の給紙台の昇降機構の側面図である。It is a side view of the raising / lowering mechanism of the paper feed stand of FIG. 図1の給紙装置の斜視図である。FIG. 2 is a perspective view of the paper feeding device in FIG. 1. 図1の抑止部材の分解拡大斜視図である。It is a disassembled expansion perspective view of the suppression member of FIG. 図5の抑止部材の縦断面図である。It is a longitudinal cross-sectional view of the suppression member of FIG. 洋式封筒の斜視図である。It is a perspective view of a Western-style envelope. 洋式封筒を給紙する場合の準備工程を示す給紙装置の側面図である。It is a side view of the paper feeder which shows the preparation process in the case of feeding a Western-style envelope. 洋式封筒の給紙直前の工程を示す給紙装置の側面図である。It is a side view of the paper feeder which shows the process just before paper feed of a Western-style envelope. 図8の準備工程に対応する給紙装置の後面図である。FIG. 9 is a rear view of the paper feeding device corresponding to the preparation process of FIG. 8. 図9の給紙直前の工程に対応する給紙装置の後面図である。FIG. 10 is a rear view of the sheet feeding device corresponding to the process immediately before sheet feeding in FIG. 9. 和式封筒の斜視図である。It is a perspective view of a Japanese-style envelope. 従来の給紙装置の側面図である。It is a side view of the conventional paper feeder.
符号の説明Explanation of symbols
1 印刷機本体
2 封筒給紙装置
22 側端ガイド
23 抑止部材
23b 抑止面
25 エア吸着式搬送ベルト機構
27 後端ガイド
28 前端ガイド
31 第1の上限センサー
32 第2の上限センサー
47 コントローラ
56 搬送ベルト
56a 搬送下面
57 吸引ボックス
61 エア吹出しボックス
P 用紙
Pa 洋式封筒
Pb 厚紙
DESCRIPTION OF SYMBOLS 1 Printer main body 2 Envelope paper feeder 22 Side edge guide 23 Suppression member 23b Suppression surface 25 Air adsorption type conveyance belt mechanism 27 Rear end guide 28 Front end guide 31 First upper limit sensor 32 Second upper limit sensor 47 Controller 56 Conveyance belt 56a Conveying lower surface 57 Suction box 61 Air blowing box P Paper Pa Western envelope Pb Thick paper

Claims (1)

  1. 印刷媒体として封筒を積載すると共に略水平姿勢に配置された昇降可能な給紙台(21)と、封筒搬送方向と直交する幅方向両側に配置される積載封筒側端規制用の側端ガイド(22)と、積載封筒の封筒搬送方向の後端規制用の後端ガイド(27)と、を備えた封筒給紙装置において、
    給紙台(21)の封筒搬送方向の前部の上方に配置されて積載封筒の最上位封筒を略水平な搬送下面(56a)にエア吸着して搬送するエア吸着式搬送ベルト機構(25)と、
    前記エア吸着式搬送ベルト機構(25)よりも搬送方向の後方側であって、封筒幅方向両側端部に配置されると共に、略水平な抑止面(23b)を有し前後方向に延びる一対の抑止部材(23)と、
    前記給紙台(21)を略水平姿勢で昇降させる昇降機構と、
    前記昇降機構の駆動を制御する制御装置(47)と、を備え、
    前記抑止部材(23)の抑止面(23b)は、エア吸着式搬送ベルト機構(25)の搬送下面(56a)と同じ高さに位置し、
    前記制御装置(47)は、前記給紙台(21)上の最上位封筒がエア吸着式搬送ベルト機構(25)の搬送下面(56a)及び抑止部材(23)の抑止面(23b)に当接した後も、給紙台(21)を所定量上昇させ、エア吸着式搬送ベルト機構(25)の搬送下面(56a)及び抑止部材(23)の抑止面(23b)と、給紙台(21)の間で、積載封筒全体が平面状かつ水平状に上下方向から圧縮されるように、昇降機構を制御する、ことを特徴とする封筒給紙装置。
    A sheet feeding table (21) capable of moving up and down and arranged in a substantially horizontal posture as a printing medium and a side guide for stacking envelope side edges arranged on both sides in the width direction orthogonal to the envelope conveying direction ( 22) and a rear end guide (27) for restricting the rear end in the envelope transport direction of the loaded envelope,
    An air adsorbing type conveyor belt mechanism (25) that is arranged above the front part of the sheet feeding table (21) in the envelope conveying direction and adsorbs the uppermost envelope of the stacking envelope by air adsorption to the substantially horizontal lower conveying surface (56a ). When,
    A pair of air suction type conveying belt mechanisms (25) at the rear side in the conveying direction and disposed at both end portions in the envelope width direction and having a substantially horizontal restraining surface (23b) and extending in the front-rear direction. A deterrent member (23);
    An elevating mechanism for elevating and lowering the paper feed table (21) in a substantially horizontal posture;
    A control device (47) for controlling the drive of the lifting mechanism,
    The restraining surface (23b) of the restraining member (23) is located at the same height as the transport lower surface (56a) of the air adsorption transport belt mechanism (25),
    In the control device (47), the uppermost envelope on the paper feed tray (21) contacts the lower conveying surface (56a) of the air adsorption type conveying belt mechanism (25) and the deterring surface (23b) of the deterring member (23). Even after the contact, the sheet feeding table (21) is raised by a predetermined amount , the conveying lower surface (56a) of the air adsorption type conveying belt mechanism (25), the deterring surface (23b) of the deterring member (23), and the sheet feeding table ( 21) The envelope feeding device , wherein the elevating mechanism is controlled so that the entire stacked envelope is compressed from above and below in a flat and horizontal manner .
JP2004137419A 2004-05-06 2004-05-06 Envelope feeder Active JP4391309B2 (en)

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Publication number Priority date Publication date Assignee Title
JP5565266B2 (en) * 2010-10-25 2014-08-06 コニカミノルタ株式会社 Paper feeding device and image forming apparatus
US8152155B1 (en) * 2011-03-07 2012-04-10 Xerox Corporation Envelope feed apparatus
EP2769946B1 (en) 2013-02-20 2016-02-17 Ricoh Company, Ltd. Apparatus for supporting a media stack in a media feeding device
JP6790765B2 (en) 2016-11-30 2020-11-25 コニカミノルタ株式会社 Paper feed device and paper feed unit

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