JPH0585635A - Sheet hopper for printing device - Google Patents

Sheet hopper for printing device

Info

Publication number
JPH0585635A
JPH0585635A JP3248963A JP24896391A JPH0585635A JP H0585635 A JPH0585635 A JP H0585635A JP 3248963 A JP3248963 A JP 3248963A JP 24896391 A JP24896391 A JP 24896391A JP H0585635 A JPH0585635 A JP H0585635A
Authority
JP
Japan
Prior art keywords
sheet
paper
hopper
opening
sheets
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.)
Withdrawn
Application number
JP3248963A
Other languages
Japanese (ja)
Inventor
Yoshio Akimoto
吉雄 秋元
Isao Miki
勲 三木
Noriyuki Okamoto
則之 岡本
Yasuhiro Tanabe
泰博 田辺
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fujitsu Ltd
Original Assignee
Fujitsu Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP3248963A priority Critical patent/JPH0585635A/en
Publication of JPH0585635A publication Critical patent/JPH0585635A/en
Withdrawn legal-status Critical Current

Links

Landscapes

  • Sheets, Magazines, And Separation Thereof (AREA)
  • Paper Feeding For Electrophotography (AREA)

Abstract

PURPOSE:To reduce a double feed generation rate for a sheet hopper for a printing device such as 811 electrophotographic image forming device. CONSTITUTION:For a sheet hopper for a printing device for charging a paper sheet P from an aperture 12 of a casing 11 having the aperture part 12 at an upper surface in a perpendicular direction to a sheet surface, a sheet separation member 2 is protruded at an inner side surface upper part of the aperture part 12 to be directed to the inside of the aperture part 12, where concretely, a plate member 2b or a roller 2b rotatably supported in the sheet P charging direction is provided, for example, for the sheet separation member.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【産業上の利用分野】本発明は、例えば電子写真式画像
形成装置等の印刷装置の用紙ホッパに関するものであ
る。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a paper hopper for a printing apparatus such as an electrophotographic image forming apparatus.

【0002】[0002]

【従来の技術】図5は電子写真式印刷装置の用紙搬送経
路を示す概略図であり、図6はその要部拡大図である。
2. Description of the Related Art FIG. 5 is a schematic view showing a sheet conveying path of an electrophotographic printing apparatus, and FIG. 6 is an enlarged view of a main part thereof.

【0003】この電子写真式印刷装置での用紙搬送経路
は以下の通りである。すなわち、印刷用紙として使用さ
れる枚葉紙Pは、機体20内に収容された用紙ホッパ5
0内に予め積層状態で載置されており、所定圧で表面に
圧着されたピックローラ60によってこの用紙ホッパ5
0から1枚ずつ繰り出される。この後、枚葉紙Pはレジ
ストローラ61によって転写(印刷)タイミングを合わ
されながら転写(印刷)位置63に搬送され、現像装置
62によって感光体ドラム64の表面に形成されたトナ
ー画像が該枚葉紙Pの所期の位置に転写される。そして
該枚葉紙Pに形成されたトナー画像は、定着ローラ67
で加熱定着された後、所定間隔おきに配置された搬送ロ
ーラ68でスタッカ69に搬送される。
The sheet conveying path in this electrophotographic printer is as follows. That is, the sheet P used as the printing sheet is the sheet hopper 5 stored in the machine body 20.
The paper hopper 5 is placed in the stack 0 in advance in the stack 0, and is picked up by the pick roller 60 that is pressed against the surface with a predetermined pressure.
It is played one by one from 0. After that, the sheet P is conveyed to the transfer (printing) position 63 while the transfer (printing) timing is adjusted by the registration roller 61, and the toner image formed on the surface of the photosensitive drum 64 by the developing device 62 is transferred to the sheet. It is transferred to the desired position on the paper P. The toner image formed on the sheet P is fixed on the fixing roller 67.
After being heated and fixed by, the sheet is conveyed to the stacker 69 by the conveying rollers 68 arranged at predetermined intervals.

【0004】ところで上記用紙ホッパ50は、図6に示
すように、上向きに開口した有底の函体11内の一側部
に設けた2枚のガイド板12aと側壁12bで囲まれる
開口部12を備えるとともに、印刷が進むにつれて減っ
ていく枚葉紙Pに対するピックローラ60の当接圧を一
定に保つために上方に付勢された給紙テーブル13を内
底部に収容している。上記ガイド板12aは種々の用紙
幅の枚葉紙Pに対応できるように該枚葉紙Pの幅方向に
移動自在にその基端部を給紙テーブル13に付設してい
る。
As shown in FIG. 6, the paper hopper 50 has an opening 12 surrounded by a side wall 12b and two guide plates 12a provided on one side of a box 11 having a bottom which opens upward. In addition, the paper feed table 13 biased upward in order to keep the contact pressure of the pick roller 60 against the sheet P, which decreases as the printing progresses, is housed in the inner bottom portion. The guide plate 12a is attached to the paper feed table 13 at its base end so as to be movable in the width direction of the sheet P so that the sheet P having various sheet widths can be accommodated.

【0005】このような用紙ホッパ50に枚葉紙Pを補
充する手順としては、まずピックローラ60を支承して
いるフレーム65を所定手段によって上方向に移動さ
せ、レール15上に沿って移動可能に機体20内に収容
されている用紙ホッパ50を手前に引き出した後、装入
口12へ包装を解いた所定枚数の枚葉紙Pを紙面に垂直
な方向に装入するようにしている。
As a procedure for replenishing the sheet P to the sheet hopper 50, first, the frame 65 supporting the pick roller 60 is moved upward by a predetermined means so that it can be moved along the rail 15. First, after pulling out the paper hopper 50 accommodated in the machine body 20 to the front, a predetermined number of unwrapped sheets P are loaded into the loading port 12 in a direction perpendicular to the paper surface.

【0006】上記枚葉紙Pは大きな原紙を多数枚重ねて
カッターで所定サイズに裁断されるところから、包装を
解いた直後の枚葉紙Pの端面は、図7に示すように、例
えば下方向に突出したバリBが形成されている場合が多
い。従って、包装を解いた直後の枚葉紙Pをそのまま用
紙ホッパ50に装入した場合には、印刷時に用紙ホッパ
50より繰り出される際に、上記バリBで枚葉紙P相互
が密着しているところから上記ピックローラ60によっ
て枚葉紙P相互の分離が完全に行われないで、複数枚の
枚葉紙Pが一度に転写(印刷)位置にまで搬送される、
いわゆる用紙重送が発生する恐れがある。
Since the large number of large sheets of the above-mentioned sheet P are piled up and cut into a predetermined size by a cutter, the end surface of the sheet P immediately after unpacking is, for example, as shown in FIG. In many cases, a burr B protruding in the direction is formed. Therefore, when the sheet P immediately after unpacking is loaded into the sheet hopper 50 as it is, the sheets P are in close contact with each other at the burr B when being fed out from the sheet hopper 50 during printing. However, the sheets P are not completely separated from each other by the pick roller 60, and a plurality of sheets P are conveyed to the transfer (printing) position at one time.
So-called double feeding of paper may occur.

【0007】このために上記枚葉紙Pの装入に先立っ
て、例えば該枚葉紙Pの束の直立した状態で両端を掴
み、斜め方向にずらせながら固い平面に軽く落とす等の
「さばき作業」を行うことがマニュアル化されている。
For this purpose, prior to the loading of the above-mentioned sheet P, for example, a "scattering work" is performed in which a bundle of the sheet P is grasped at both ends in an upright state and is slanted in a slanting direction and lightly dropped on a solid plane. It is manualized to do.

【0008】[0008]

【発明が解決しようとする課題】しかしながら、上記
「さばき作業」を伴う用紙ホッパへの用紙補充にかかる
手間は、ユーザにとって相当の負担となり、場合によっ
ては上記「さばき作業」を全く行わないで装置を稼働さ
せるケースもあり、上記用紙重送が頻発する例も報告さ
れている。
However, the trouble of replenishing the paper in the paper hopper accompanied with the above-mentioned "scattering work" is a considerable burden to the user, and in some cases, the apparatus without performing the "scattering work" at all. In some cases, the above-mentioned double feeding of paper is frequently reported.

【0009】特に昨今の印刷装置の印刷処理速度の向上
により、例えば上記のような電子写真式印刷装置におい
ても用紙ホッパ50の用紙容量が従来の250枚程度か
ら500〜1000枚程度のものが普及しており、この
ような印刷装置では上記の傾向がさらに顕著である。
In particular, due to the recent improvement in the printing speed of the printing apparatus, for example, in the electrophotographic printing apparatus as described above, the paper capacity of the paper hopper 50 has increased from the conventional 250 sheets to 500 to 1000 sheets. Therefore, the above tendency is more remarkable in such a printing apparatus.

【0010】このような用紙重送自体は単にスタッカに
印刷済の枚葉紙と白紙が混在するだけで、近年の印刷装
置の改良により重大な故障に到るケースは稀であるもの
の、印刷装置に対するユーザの信頼性が低下する恐れも
あって極力その発生率を低減することが求められてい
る。このような事情は上記電子写真式印刷装置に限られ
たものでなく、枚葉紙を印刷用紙として使用する、例え
ばオフセット式軽印刷装置や謄写版印刷装置においても
同様である。
In such double feeding of paper itself, only the printed sheets and blank sheets are mixed in the stacker, and although it is rare that a serious failure occurs due to the improvement of the printing apparatus in recent years, the printing apparatus is rare. There is a risk that the reliability of the user may be reduced, and it is required to reduce the occurrence rate as much as possible. Such a situation is not limited to the electrophotographic printing apparatus described above, and the same applies to, for example, an offset type light printing apparatus or a copy printing apparatus that uses a sheet as a printing sheet.

【0011】本発明は上記従来の事情に鑑みて提案され
たものであって、用紙重送の発生率を低減できるように
した印刷装置の用紙ホッパを提供することを目的とする
ものである。
The present invention has been proposed in view of the above conventional circumstances, and it is an object of the present invention to provide a paper hopper of a printing apparatus capable of reducing the occurrence rate of double feed of paper.

【0012】[0012]

【課題を解決するための手段】上記の目的を達成するた
めに、上面に開口部を備えた函体の該開口部より、枚葉
紙を紙面に垂直な方向に装入する印刷装置の用紙ホッパ
において、本発明は以下の手段を提供する。すなわち、
図1もしくは図3に示すように、開口部12の内側面上
部に、用紙分離部材2を該開口部12の内側に向けて突
設する構成とし、該用紙分離部材2としては、例えば板
状片2aもしくは枚葉紙の装入方向に回転自在に軸支さ
れたローラ2bを採用するものである。
In order to achieve the above object, a sheet of a printing device in which a sheet is loaded in a direction perpendicular to the plane of the paper through an opening of a box having an opening on the upper surface thereof. In the hopper, the present invention provides the following means. That is,
As shown in FIG. 1 or FIG. 3, a paper separating member 2 is provided at the upper part of the inner side surface of the opening 12 so as to project toward the inside of the opening 12. The paper separating member 2 may be, for example, a plate-like member. A roller 2b rotatably supported in the loading direction of the piece 2a or the sheet is adopted.

【0013】[0013]

【作用】上記構成における用紙分離部材2は、図2(a)
に示すように、該開口部12の開口面積を枚葉紙Pの紙
面面積よりも狭めているために、枚葉紙Pの束を上方よ
り紙面に垂直な方向に装入する際に該枚葉紙Pの端部と
一旦当接する。そして図2(b) に示すように、自重もし
くは作業者の押圧によって、枚葉紙Pはその弾性で該用
紙分離部材2との接触箇所を支点として中央部が下方に
撓んだ状態で下層から順に1枚ずつ分離されながら落下
する。
The sheet separating member 2 having the above structure is shown in FIG.
Since the opening area of the opening 12 is narrower than the sheet surface area of the sheet P as shown in FIG. 5, when the stack of sheets P is loaded from above in the direction perpendicular to the sheet surface, It once contacts the edge of the sheet P. Then, as shown in FIG. 2 (b), due to its own weight or the pressure of the operator, the sheet P is elastically deformed in the lower layer in a state where the central portion is bent downward with the contact point with the sheet separating member 2 as a fulcrum. It drops while separating one by one in order.

【0014】[0014]

【実施例】以下、本発明に係る実施例を図面に基づき説
明する。図1は本発明の一実施例の構成図であり、図2
はその用紙装入作業の様子を示す説明図であり、図5に
示す構成の電子写真式印刷装置に適用した実施例を示し
ている。
Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram of an embodiment of the present invention.
FIG. 6 is an explanatory view showing a state of the paper loading work, and shows an embodiment applied to the electrophotographic printing apparatus having the configuration shown in FIG.

【0015】図1に示す用紙ホッパ10は、上向きに開
口した有底の函体11内の一側部に設けた2枚のガイド
板12aと側壁12bで囲まれる開口部12を備えると
ともに、内底部には枚葉紙Pとピックローラ60との当
接圧を調整するための上向きに付勢された給紙テーブル
13を収容し、さらに上記ガイド板12aは種々の用紙
幅の枚葉紙Pに対応できるように該枚葉紙Pの幅方向に
移動自在にその基端部を給紙テーブル13に付設してい
る点で図6に示す従来の用紙ホッパ50と共通してい
る。
The paper hopper 10 shown in FIG. 1 is provided with an opening 12 surrounded by two guide plates 12a and side walls 12b provided on one side of a bottomed box 11 having an upward opening. The bottom part accommodates a sheet feeding table 13 biased upward for adjusting the contact pressure between the sheet P and the pick roller 60, and the guide plate 12a further includes the sheet P having various sheet widths. This is common to the conventional paper hopper 50 shown in FIG. 6 in that the base end portion of the paper sheet P is attached to the paper feed table 13 so as to be movable in the width direction of the paper sheet P so as to correspond to the above.

【0016】この実施例においては上記開口部12を構
成するガイド板12aと側壁12bに固定した支え板1
2cの各々の内側面上部に、用紙分離部材として該開口
部12の内側に向けて突設した、例えばアクリル樹脂製
の板状片2aを備えるようにした。この実施例において
板状片2aの幅寸法は20mmで、開口部12の内側に向
う突出寸法を5mmとしている。
In this embodiment, the support plate 1 fixed to the guide plate 12a and the side wall 12b forming the opening 12 is formed.
A plate-like piece 2a made of, for example, an acrylic resin, which is provided as a paper separating member and projects toward the inside of the opening 12, is provided on the upper portion of the inner side surface of each of the 2c. In this embodiment, the plate-shaped piece 2a has a width of 20 mm, and the protrusion of the opening 12 toward the inside is 5 mm.

【0017】このような構成の用紙ホッパ10に、枚葉
紙Pを補充する手順としては、まずピックローラ60を
支承しているフレーム65を所定手段によって上方向に
移動させ、レール15上に沿って移動可能に機体20内
に収容されている用紙ホッパ10を手前に引き出した
後、ガイド板12aに沿って包装を解いた所定枚数の枚
葉紙Pを紙面に垂直な方向に装入する。
As a procedure for replenishing the sheet P to the sheet hopper 10 having such a structure, first, the frame 65 supporting the pick roller 60 is moved upward by a predetermined means, and is moved along the rail 15. After pulling out the paper hopper 10 housed in the machine body 20 so as to be movable, a predetermined number of unwrapped sheets P are loaded along the guide plate 12a in a direction perpendicular to the paper surface.

【0018】この際に、上記板状片2aは、図2(a) に
示すように、該開口部12の開口面積を枚葉紙Pの紙面
面積よりも狭めているために、枚葉紙Pの束を上方より
紙面に垂直な方向に装入する際に該枚葉紙Pの端部と一
旦当接する。そして図2(b)に示すように、自重もしく
は作業者の押圧によって、枚葉紙Pはその弾性で該板状
片2aとの接触箇所を支点として中央部が下方に撓んだ
状態で下層から順に1枚ずつ分離されながら用紙ホッパ
10内に落下する。
At this time, since the plate-shaped piece 2a has the opening area of the opening 12 narrower than the sheet surface area of the sheet P as shown in FIG. When the bundle of P sheets is loaded from above in the direction perpendicular to the paper surface, the sheet bundle P once comes into contact with the end portion of the sheet P. Then, as shown in FIG. 2 (b), the sheet P is elastically deformed by its own weight or the pressure of the operator, and the lower part of the sheet P is bent in the central part with the contact point with the plate-like piece 2 a as a fulcrum. The sheets are dropped one after another into the paper hopper 10 while being separated one by one.

【0019】このようにして枚葉紙Pは、用紙ホッパ1
0に収容される前に、一旦1枚ずつ分離されるので、例
えば包装を解いた時点で枚葉紙P相互が密着した状態に
あったとしても、印刷の開始時には「さばき作業」を経
たのとほぼ同等の状態で用紙ホッパ10内に収容されて
いることになる。
In this way, the sheet P is fed to the sheet hopper 1
Since the sheets are once separated before being accommodated in 0, even if the sheets P are in close contact with each other at the time of unpacking, for example, a "scattering work" is performed at the start of printing. The paper is stored in the paper hopper 10 in a state substantially equivalent to the above.

【0020】従って、この実施例によれば用紙ホッパ1
0に収容された枚葉紙Pは確実にピックローラ60によ
って1枚ずつ繰り出され、印刷時の用紙重送の発生率を
確実に低減することができる。
Therefore, according to this embodiment, the paper hopper 1
The sheets P accommodated in 0 are reliably fed one by one by the pick roller 60, and the occurrence rate of double feeding of sheets during printing can be surely reduced.

【0021】また、図3は上記ガイド板12bを備えた
大型の用紙ホッパでなく、例えば電子写真式複写装置に
挿抜して使用されるようなガイド板を備えない用紙ホッ
パに本発明を適用した実施例の構成を示すものである。
すなわち図示のように、函体11の上面に備えられた開
口部12下方の側壁12bに直接、用紙分離部材2とし
て板状片2aを該開口部12の内側に向けて突設するこ
とにより、上記一実施例と同様の作用をもって枚葉紙P
相互を装入時に分離できて、用紙重送を防止することが
できる。この用紙ホッパにおいても、枚葉紙Pを繰り出
すピックローラとの当接圧を調整するための上向きに付
勢された給紙テーブル13を内底部に収容している。
3 is not a large-sized paper hopper provided with the guide plate 12b, but the present invention is applied to a paper hopper not equipped with a guide plate that is used by being inserted into and removed from an electrophotographic copying machine, for example. 1 illustrates a configuration of an example.
That is, as shown in the drawing, the plate-like piece 2a as the sheet separating member 2 is directly provided on the side wall 12b below the opening 12 provided on the upper surface of the box 11 so as to project toward the inside of the opening 12, The sheet P has the same action as that of the above-described embodiment.
It is possible to separate each other at the time of loading and prevent double feeding of sheets. Also in this paper hopper, the paper feed table 13 biased upward for adjusting the contact pressure with the pick roller for feeding the sheet P is housed in the inner bottom portion.

【0022】さらに図4は、本発明に係る更に他の実施
例の構成図である。この実施例においては、用紙分離部
材として上記図1に示す一実施例の板状片2aに替え
て、枚葉紙Pの装入方向に軸2cによって回転自在に軸
支されたローラ2bを採用しており、その他の構成は上
記図1に示す一実施例と同じである。
Further, FIG. 4 is a configuration diagram of still another embodiment according to the present invention. In this embodiment, instead of the plate-like piece 2a of the embodiment shown in FIG. 1 as the paper separating member, a roller 2b rotatably supported by a shaft 2c in the sheet P loading direction is adopted. The other structure is the same as that of the embodiment shown in FIG.

【0023】この実施例におけるローラ2bも、該開口
部12の開口面積を枚葉紙Pの紙面面積よりも狭めてい
るために、枚葉紙Pは、該ローラ2bとの接触箇所を支
点として下方に撓んだ状態で下層から順に1枚ずつ分離
されながら用紙ホッパ10内に落下し、上記一実施例と
同様、印刷時の用紙重送の発生率を確実に低減すること
ができる。
Also in the roller 2b in this embodiment, since the opening area of the opening 12 is narrower than the sheet surface area of the sheet P, the sheet P uses the contact point with the roller 2b as a fulcrum. In the state of being bent downward, the sheets are dropped into the sheet hopper 10 while being separated one by one from the lower layer one by one, and the occurrence rate of double feeding of sheets at the time of printing can be surely reduced as in the above-described embodiment.

【0024】さらにこのローラ2bを用紙分離部材とし
て用紙ホッパの側壁に直接支承させる等して、図3に示
す電子写真式複写装置に使用される用紙ホッパに適用す
ることが可能である。
Further, the roller 2b can be directly supported on the side wall of the paper hopper as a paper separating member and applied to the paper hopper used in the electrophotographic copying machine shown in FIG.

【0025】尚、上記各実施例では電子写真式印刷装置
もしくは電子写真式複写装置に適用した場合を示した
が、本発明の適用対象はこれに限定されず、例えばオフ
セット式軽印刷装置や謄写版印刷装置等の枚葉紙を印刷
用紙として使用する印刷装置にも適用できる。また用紙
分離部材としては、上記ガイドの上端に設けた板状体や
ローラに限らず、例えば用紙ホッパ10の側壁の一部を
切りこんで開口部12の内側に向けて突出させるように
してもよい。
In each of the above embodiments, the case where the invention is applied to the electrophotographic printing apparatus or the electrophotographic copying apparatus is shown. However, the application target of the present invention is not limited to this, and for example, an offset type light printing apparatus or a copy plate. It can also be applied to a printing device such as a printing device that uses a sheet as a printing sheet. Further, the sheet separating member is not limited to the plate-like member or the roller provided on the upper end of the guide, and for example, a part of the side wall of the sheet hopper 10 may be cut and projected toward the inside of the opening 12. Good.

【0026】[0026]

【発明の効果】以上のように本発明によれば、枚葉紙を
印刷用紙とする印刷装置の用紙ホッパの開口部の内側面
上部に、用紙分離部材を内側に向けて突設することによ
り、枚葉紙の装入と同時に「さばき作業」とほぼ同等の
作用をもって、枚葉紙相互を分離させることができる。
その結果、確実に印刷時の用紙重送の発生率を低減で
き、特に用紙容量の増した大型の用紙ホッパを使用する
印刷装置においてその効果が顕著となる。
As described above, according to the present invention, the paper separating member is provided so as to project inward at the upper portion of the inner side surface of the opening of the paper hopper of the printing apparatus using the sheet as the printing paper. The sheets can be separated from each other at the same time as the loading of the sheets, with an action substantially equivalent to the “scattering work”.
As a result, it is possible to surely reduce the occurrence rate of double feeding of papers at the time of printing, and the effect becomes remarkable especially in a printing apparatus using a large paper hopper with an increased paper capacity.

【図面の簡単な説明】[Brief description of drawings]

【図1】本発明に係る一実施例の構成図である。FIG. 1 is a configuration diagram of an embodiment according to the present invention.

【図2】本発明の原理の説明図である。FIG. 2 is an explanatory diagram of the principle of the present invention.

【図3】本発明に係る他の実施例の構成図である。FIG. 3 is a configuration diagram of another embodiment according to the present invention.

【図4】本発明に係る更に他の実施例の構成図である。FIG. 4 is a configuration diagram of still another embodiment according to the present invention.

【図5】電子写真式印刷装置の用紙搬送経路を示す概念
図である。
FIG. 5 is a conceptual diagram showing a sheet conveyance path of the electrophotographic printing apparatus.

【図6】従来の用紙ホッパの構成図である。FIG. 6 is a configuration diagram of a conventional paper hopper.

【図7】枚葉紙の端面の拡大断面図である。FIG. 7 is an enlarged sectional view of an end face of a sheet.

【符号の説明】[Explanation of symbols]

2 用紙分離部材 2a 板状片 2b ローラ 12 開口部 P 枚葉紙 2 paper separating member 2a plate-like piece 2b roller 12 opening P sheet

───────────────────────────────────────────────────── フロントページの続き (72)発明者 田辺 泰博 神奈川県川崎市中原区上小田中1015番地 富士通株式会社内 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Yasuhiro Tanabe 1015 Kamiodanaka, Nakahara-ku, Kawasaki-shi, Kanagawa Fujitsu Limited

Claims (3)

【特許請求の範囲】[Claims] 【請求項1】 上面に開口部(12)を備えた函体(11)の該
開口部(12)より、枚葉紙(P) を紙面に垂直な方向に装入
する印刷装置の用紙ホッパにおいて、 上記開口部(12)の内側面上部に、用紙分離部材(2) を該
開口部(12)の内側に向けて突設したことを特徴とする印
刷装置の用紙ホッパ。
1. A paper hopper for a printing apparatus for loading a sheet (P) in a direction perpendicular to the surface of the box (11) having an opening (12) on its upper surface. In the paper hopper of the printing apparatus, the paper separating member (2) is provided at the upper part of the inner surface of the opening (12) so as to project toward the inside of the opening (12).
【請求項2】 板状片(2a)を用紙分離部材とした請求項
1に記載の印刷装置の用紙ホッパ。
2. The paper hopper for a printing apparatus according to claim 1, wherein the plate-like piece (2a) is used as a paper separating member.
【請求項3】 上記枚葉紙(P) の装入方向に回転自在に
軸支されたローラ(2b)を用紙分離部材とした請求項1に
記載の印刷装置の用紙ホッパ。
3. The paper hopper for a printing apparatus according to claim 1, wherein the roller (2b) rotatably supported in the loading direction of the sheet (P) is a paper separating member.
JP3248963A 1991-09-27 1991-09-27 Sheet hopper for printing device Withdrawn JPH0585635A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3248963A JPH0585635A (en) 1991-09-27 1991-09-27 Sheet hopper for printing device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3248963A JPH0585635A (en) 1991-09-27 1991-09-27 Sheet hopper for printing device

Publications (1)

Publication Number Publication Date
JPH0585635A true JPH0585635A (en) 1993-04-06

Family

ID=17186004

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3248963A Withdrawn JPH0585635A (en) 1991-09-27 1991-09-27 Sheet hopper for printing device

Country Status (1)

Country Link
JP (1) JPH0585635A (en)

Similar Documents

Publication Publication Date Title
US5967507A (en) Automatic document handler having non-relative motion vacuum corrugating device
JP3337978B2 (en) Paper transport device
GB2279338A (en) Paper transfer device for a laser printer with means for removing jams
JPH0585635A (en) Sheet hopper for printing device
JPH1025039A (en) Paper feeder
JPH10101232A (en) Paper feeding device and picture image forming device
US20230416038A1 (en) Sheet post-processing apparatus and image forming system
JP2638960B2 (en) Image forming device
JP2548406B2 (en) Image forming device
JPH05178483A (en) Automatic paper sheet feeding device
JP2000335768A (en) Paper feeder
JPH08175689A (en) Sheet member feeder and image forming device
JPH0141576B2 (en)
KR200221148Y1 (en) Nonfeeding device for copier paper
JPS59138534A (en) Paper feeder
JP3402119B2 (en) Paper feeder
JPS58172139A (en) Sheet-feeding device
JPH04153150A (en) Image forming device
JPH06100179A (en) Sheet loading device and image forming device using it
JPH02123037A (en) Paper feeder and picture forming device
JPH11130274A (en) Sheet material feeding device and image processing device
JPH08290846A (en) Sheet conveyor device and image forming device
JPH0769467A (en) Paper feeder of image former
JPH09124173A (en) Paper feeder and image forming device provided with same
JPH0367827A (en) Paper feeder

Legal Events

Date Code Title Description
A300 Withdrawal of application because of no request for examination

Free format text: JAPANESE INTERMEDIATE CODE: A300

Effective date: 19981203