JPH05116772A - Paper sheet feed cassette - Google Patents
Paper sheet feed cassetteInfo
- Publication number
- JPH05116772A JPH05116772A JP3277559A JP27755991A JPH05116772A JP H05116772 A JPH05116772 A JP H05116772A JP 3277559 A JP3277559 A JP 3277559A JP 27755991 A JP27755991 A JP 27755991A JP H05116772 A JPH05116772 A JP H05116772A
- Authority
- JP
- Japan
- Prior art keywords
- bottom plate
- paper
- cassette
- paper sheet
- take
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Paper Feeding For Electrophotography (AREA)
- Sheets, Magazines, And Separation Thereof (AREA)
Abstract
Description
【0001】[0001]
【産業上の利用分野】この発明は、複写機、プリンタ、
ファクシミリ等の給紙カセットに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a copying machine, a printer,
The present invention relates to a paper feed cassette such as a facsimile.
【0002】[0002]
【従来の技術】従来前記のような給紙カセットとして、
多数の用紙を収納し、取出ローラによって用紙を順次1
枚ずつ取出すようになっているカセット本体を具え、こ
のカセット本体は該本体内に上下方向に揺動可能に配設
されて用紙を積載する底板と、この底板の下面側に配設
されて用紙を取出ローラに圧接させるように底板を押上
げる押上部材とを有するものが使用されており、底板は
支点を中心として揺動するようになっている。そしてそ
の支点は、カセット本体の底面に設けられているが、こ
のようなものにおいては、底板の上昇に伴って底板の先
端とカセット本体との間の隙間が大きくなり、例えばカ
セット本体の用紙取出側にコーナー爪を設けて1枚毎に
取出すようにしたものにおいては、コーナー爪と用紙の
先端との間の隙間が底板の上昇位置によって異なり、用
紙のコーナー爪からの抜け具合が不安定となって、用紙
の不送りを生じ易くなるというような問題がある。2. Description of the Related Art Conventionally, as a paper feed cassette as described above,
Stores a large number of paper sheets, and sequentially takes them out with the take-out roller.
The cassette main body is configured to take out sheets one by one, and the cassette main body is provided in the main body so as to be swingable in the vertical direction and has a bottom plate for loading sheets, and a bottom plate side of the bottom plate. A push-up member that pushes up the bottom plate so as to press the take-out roller against the take-out roller is used, and the bottom plate swings around a fulcrum. The fulcrum is provided on the bottom surface of the cassette body.However, in such a case, as the bottom plate rises, the gap between the tip of the bottom plate and the cassette body becomes larger. In the case where the corner claws are provided on the side to take out the sheets one by one, the gap between the corner claws and the leading edge of the paper differs depending on the rising position of the bottom plate, and the state of the paper coming out from the corner claw becomes unstable. As a result, there is a problem in that the paper may be easily fed.
【0003】[0003]
【発明が解決しようとする課題】そこでこのような問題
を解消するために、底板の支点をカセット本体の側面に
設けて、支点の高さを高くしたものがあり、このような
ものは底板の上昇時と下降時とで先端の隙間がほぼ均一
となって、前記のような問題を解消することはできた
が、底板の支点部が用紙の側面を規制するサイドガイド
部材より外側となるため、サイドガイド部材に底板の逃
げを設けなければならず、用紙の側面のガイドが不完全
になり、また全体の組立てが著しく困難である等の問題
がある。In order to solve such a problem, there is a fulcrum of the bottom plate provided on the side surface of the cassette body to increase the height of the fulcrum. Although the gaps at the leading edge were almost uniform during the ascending and descending, the above problems could be solved, but the fulcrum of the bottom plate is outside the side guide member that regulates the side surface of the paper. However, there is a problem that the side guide member must be provided with a clearance for the bottom plate, the guide on the side surface of the paper is incomplete, and the whole assembly is extremely difficult.
【0004】そこでこの発明の目的は、前記のような従
来の給紙カセットのもつ問題を解消し、用紙の不送りを
生ずることなく安定した給紙を行い、用紙側面を完全に
ガイドし、また全体の組立てが容易な給紙カセットを提
供するにある。SUMMARY OF THE INVENTION Therefore, an object of the present invention is to solve the above-mentioned problems of the conventional paper feeding cassette, to stably feed the paper without causing the paper not to be fed, to completely guide the side surface of the paper, and An object of the present invention is to provide a paper feed cassette that is easy to assemble as a whole.
【0005】[0005]
【課題を解決するための手段】この発明は前記のような
目的を達成するために、請求項1の発明は、多数の用紙
を収納し、取出ローラによって用紙を順次1枚ずつ取出
すようになっているカセット本体を具え、このカセット
本体は該本体内に上下方向に揺動可能に配設されて用紙
を積載する底板と、この底板の下面側に配設されて、用
紙を取出ローラに圧接させるように底板を押上げる押上
部材とを有する給紙カセットにおいて、カセット本体の
用紙取出側の側壁に上下方向に延びるガイド溝を設ける
とともに、底板の用紙取出側の端部に前記ガイド溝に嵌
合する突起部を設けたことを特徴とするものである。請
求項2の発明は、請求項1の給紙カセットにおいて、押
上部材の底板と当接してこれを押上げる位置が、底板の
重心位置より用紙取出側に偏倚しているものである。SUMMARY OF THE INVENTION In order to achieve the above-mentioned object, the invention of claim 1 stores a large number of sheets and sequentially takes out the sheets one by one by a take-out roller. A cassette main body, which is provided in the main body so as to be swingable in the vertical direction and stacks sheets, and a bottom plate which is disposed on the lower surface side of the bottom plate and is pressed against the take-out roller. In a paper feed cassette having a push-up member that pushes up the bottom plate so that the guide plate extends vertically in the side wall of the cassette body on the paper ejection side, and the guide groove is fitted to the end of the bottom plate on the paper ejection side. It is characterized in that a protrusion is formed to match with the protrusion. According to a second aspect of the present invention, in the sheet feeding cassette according to the first aspect, the position where the bottom plate of the push-up member comes into contact with and pushes up the bottom plate is deviated from the center of gravity of the bottom plate toward the paper ejection side.
【0006】[0006]
【作用】前記のようなこの発明において、請求項1の発
明においては、カセット本体内に多数の用紙を収納して
底板上に積載し、押上部材で底板を押上げながら取出ロ
ーラによって用紙を順次1枚ずつ取出すこととなるが、
その際底板の用紙取出側の端部の突起部がカセット本体
のガイド溝に案内されて、その先端がカセット本体の前
壁と平行なまま昇降し、その最上昇時と最下降時におけ
る底板の先端とコーナー爪との間の隙間はほぼ同一とな
る。そして請求項2の発明においては、押上部材の押上
位置が、底板の重心の位置より用紙取出側に偏倚してい
るので、底板の押上部材より後部は自重によって下降し
て浮き上がることがない。In the present invention as described above, in the first aspect of the invention, a large number of sheets are stored in the cassette body and stacked on the bottom plate, and the sheets are sequentially picked up by the take-out roller while the bottom plate is being pushed up by the push-up member. You will have to take out one by one,
At that time, the projection at the end on the paper ejection side of the bottom plate is guided by the guide groove of the cassette body, and its tip moves up and down while being parallel to the front wall of the cassette body. The gap between the tip and the corner claw is almost the same. Further, in the invention of claim 2, since the pushing-up position of the pushing-up member is deviated to the sheet take-out side from the position of the center of gravity of the bottom plate, the rear portion of the pushing-up member of the bottom plate does not descend and float by its own weight.
【0007】[0007]
【実施例】図面に示す実施例において、1はカセット本
体を示し、このカセット本体1は、多数の用紙を収納
し、取出ローラ2によって用紙を順次1枚ずつ取出すよ
うになっており、このカセット本体1は該本体内に上下
方向に揺動可能に配設されて用紙を積載する底板3と、
この底板3の下面側に配設されて用紙を取出ローラ2に
圧接させるように底板3を押上げるばねからなる押上部
材4とを有している。カセット本体1には、用紙の左右
位置及び後端位置を規制する1対のサイドフェンス6及
びエンドフェンス7,用紙先端のコーナーを規制するコ
ーナー爪9が設けられており、両フェンス6,7は、カ
セット本体1内に積載される用紙のサイズに合わせて、
位置が変更するように移動可能となっていて、用紙をセ
ットした後その両側面及び後端面に軽く当接して位置規
制をするようになっており、コーナー爪9は取出ローラ
2によって用紙が取出される際、最上位の用紙を2枚目
以降の用紙から分離するものであって、サイドフェンス
6に揺動可能に設けられている。さらにカセット本体1
の側壁8の用紙取出側に上下方向に延びるガイド溝11を
設けるとともに、底板3の用紙取出側の端部にガイド溝
11に嵌合する突起部12を設けている。そして押上部材4
の底板3と当接してこれを押上げる位置が、図2に示す
ように底板3の重心Gの位置より用紙取出側に偏倚して
いる。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In the embodiment shown in the drawings, reference numeral 1 denotes a cassette body, and this cassette body 1 accommodates a large number of sheets, and a take-out roller 2 takes out the sheets one by one. The main body 1 is provided in the main body so as to be vertically swingable, and has a bottom plate 3 on which sheets are stacked,
The bottom plate 3 has a push-up member 4 which is arranged on the lower surface side and which is a spring for pushing up the bottom plate 3 so as to press the sheet against the take-out roller 2. The cassette body 1 is provided with a pair of side fences 6 and an end fence 7 that regulate the left and right positions and the trailing edge position of the sheet, and a corner claw 9 that regulates the corner of the leading edge of the sheet. , According to the size of the paper loaded in the cassette body 1,
It is movable so that the position can be changed, and after the paper is set, it is lightly contacted with both side surfaces and the rear end surface to regulate the position, and the corner claw 9 takes out the paper by the take-out roller 2. In this case, the uppermost sheet is separated from the second and subsequent sheets, and is swingably provided on the side fence 6. Furthermore, the cassette body 1
A guide groove 11 extending in the up-down direction is provided on the side of the side wall 8 of the sheet for taking out the paper, and a guide groove is provided at the end of the bottom plate 3 on the side for taking the paper.
Protrusions 12 that fit into 11 are provided. And push-up member 4
As shown in FIG. 2, the position where the bottom plate 3 comes into contact with and pushes up the bottom plate 3 is deviated from the position of the center of gravity G of the bottom plate 3 toward the paper ejection side.
【0008】前記のようなものにおいて、カセット本体
1内に多数の用紙を収納して底板3上に積載し、押上部
材4で底板3を押上げながら取出ローラ2によって用紙
を順次1枚ずつ取出すこととなるが、その際底板3の用
紙取出側の端部の突起部12がガイド溝11に案内されて、
その先端がカセット本体1の前壁5と平行なまま昇降
し、その最上昇時と最下降時における底板3の先端とコ
ーナー爪9との間の隙間はほぼ同一となるようになって
いる。そして押上部材4の押上位置が、底板3の重心G
の位置より用紙取出側に偏倚しているので、底板3の押
上部材4より後部は自重によって図2において、矢印に
示すように下降して浮き上がることがなく、このため底
板3の上下動のための特別の支点や、カセット本体1へ
の固定手段等を必要とすることなく、底板3をカセット
本体1内の所定位置に落し込むだけでセットすることが
できる。この実施例では、押上部材4としてばねを使用
しているが、これに限るものではなく、カセット本体1
に上下に揺動可能に設けた加圧レバーによって押上げる
ようにしたものであってもよい。In the above-mentioned apparatus, a large number of sheets are stored in the cassette body 1 and stacked on the bottom plate 3, and the sheets are sequentially taken out one by one by the take-out roller 2 while the bottom plate 3 is being pushed up by the push-up member 4. At that time, the projection 12 at the end of the bottom plate 3 on the paper ejection side is guided by the guide groove 11,
The tip end moves up and down while being parallel to the front wall 5 of the cassette body 1, and the gap between the tip end of the bottom plate 3 and the corner claw 9 at the time of the highest rise and the lowest fall is substantially the same. The push-up position of the push-up member 4 is the center of gravity G of the bottom plate 3.
Since it is biased to the sheet ejection side from the position of, the rear portion of the bottom plate 3 from the push-up member 4 does not descend and float as shown by the arrow in FIG. 2 due to its own weight, and therefore the bottom plate 3 moves up and down. It is possible to set by simply dropping the bottom plate 3 into a predetermined position in the cassette body 1 without requiring a special fulcrum, a fixing means to the cassette body 1, or the like. In this embodiment, a spring is used as the push-up member 4, but the present invention is not limited to this, and the cassette body 1
Alternatively, it may be pushed up by a pressure lever provided so as to be vertically swingable.
【0009】[0009]
【発明の効果】この発明は前記のようであって、請求項
1の発明は、多数の用紙を収納し、取出ローラによって
用紙を順次1枚ずつ取出すようになっているカセット本
体内に上下方向に揺動可能に底板を配設するとともに、
この底板の下面側に底板を押上げる押上部材を配設し、
カセット本体の用紙取出側の側壁に上下方向に延びるガ
イド溝を設けるとともに、底板の用紙取出側の端部に前
記ガイド溝に嵌合する突起部を設け、底板の昇降時に底
板の端部の突起部がカセット本体のガイド溝に案内され
て、その先端がカセット本体の前壁と平行に昇降し、そ
の最上昇時と最下降時における底板の先端とコーナー爪
との間の隙間はほぼ同一となるので、常に安定した給紙
が行われて用紙の不送りを生ずることがなく、用紙側面
を完全にガイドすることができるという効果がある。請
求項2の発明は、請求項1の給紙カセットにおいて、押
上部材の底板と当接してこれを押上げる位置が、底板の
重心位置より用紙取出側に偏倚していて、底板の昇降時
に押上部材より後部は自重によって下降して浮き上がる
ことがないので、請求項1の発明と同様の効果をもつの
に加えて、底板の昇降のための特別の支点や、カセット
本体への固定手段等を必要とすることなく、底板をカセ
ット本体内の所定位置に落し込むだけでセットすること
ができて、全体の組立てが容易であるという効果があ
る。The present invention is as described above. According to the invention of claim 1, a large number of sheets are accommodated, and the sheets are sequentially taken out one by one by a take-out roller. The bottom plate is swingably mounted on the
A push-up member that pushes up the bottom plate is arranged on the lower surface side of the bottom plate,
A guide groove extending vertically is provided on the side wall of the cassette body on the paper ejection side, and a protrusion that fits into the guide groove is provided on the edge of the bottom plate on the paper ejection side. The part is guided by the guide groove of the cassette body, the tip moves up and down in parallel with the front wall of the cassette body, and the gap between the tip of the bottom plate and the corner claw at the time of the highest rise and the lowest fall is almost the same. Therefore, there is an effect that a stable paper feeding is always carried out, the paper does not fail to be fed, and the side surface of the paper can be completely guided. According to a second aspect of the present invention, in the sheet feeding cassette according to the first aspect, the position where the bottom plate of the push-up member comes into contact with and pushes up the bias plate is deviated from the center of gravity of the bottom plate toward the paper ejection side, and the push-up member is pushed up and down when the bottom plate is moved up and down. Since the rear part of the member does not descend and float due to its own weight, in addition to the same effect as the invention of claim 1, a special fulcrum for raising and lowering the bottom plate, a fixing means to the cassette body, etc. are provided. There is an effect that the bottom plate can be set by dropping it into a predetermined position in the cassette body without needing it, and the whole assembly is easy.
【図1】この発明の実施例の斜面図である。FIG. 1 is a perspective view of an embodiment of the present invention.
【図2】同上の線2-2による断面図である。FIG. 2 is a sectional view taken along line 2-2 of the above.
【図3】同上の平面図である。FIG. 3 is a plan view of the above.
1 カセット本体 2 取出ローラ 3 底板 4 押上部材 5 前壁 6 サイドフェンス 7 エンドフェンス 8 側壁 9 コーナー爪 11 ガイド溝 12 突起部 1 cassette body 2 take-out roller 3 bottom plate 4 push-up member 5 front wall 6 side fence 7 end fence 8 side wall 9 corner claw 11 guide groove 12 protrusion
Claims (2)
て用紙を順次1枚ずつ取出すようになっているカセット
本体を具え、このカセット本体は該本体内に上下方向に
揺動可能に配設されて用紙を積載する底板と、この底板
の下面側に配設されて用紙を取出ローラに圧接させるよ
うに底板を押上げる押上部材とを有する給紙カセットに
おいて、カセット本体の用紙取出側の側壁に上下方向に
延びるガイド溝を設けるとともに、底板の用紙取出側の
端部に前記ガイド溝に嵌合する突起部を設けたことを特
徴とする給紙カセット。1. A cassette main body for accommodating a large number of paper sheets and sequentially taking out the paper sheets one by one by a take-out roller, the cassette main body being arranged in the main body so as to be vertically swingable. In a paper feed cassette having a bottom plate for loading sheets and a push-up member that is disposed on the lower surface side of the bottom plate and pushes up the bottom plate so that the sheets are pressed against the take-out roller, a side wall of the cassette body on the paper take-out side is provided. A paper feed cassette, characterized in that a guide groove extending in the vertical direction is provided, and a projection portion that fits into the guide groove is provided at an end portion of the bottom plate on the paper ejection side.
る位置が、底板の重心位置より用紙取出側に偏倚してい
る請求項1の給紙カセット。2. The paper feed cassette according to claim 1, wherein a position where the bottom plate of the push-up member comes into contact with and pushes up the bottom plate is deviated from the position of the center of gravity of the bottom plate toward the paper ejection side.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3277559A JPH05116772A (en) | 1991-10-24 | 1991-10-24 | Paper sheet feed cassette |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3277559A JPH05116772A (en) | 1991-10-24 | 1991-10-24 | Paper sheet feed cassette |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH05116772A true JPH05116772A (en) | 1993-05-14 |
Family
ID=17585212
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP3277559A Pending JPH05116772A (en) | 1991-10-24 | 1991-10-24 | Paper sheet feed cassette |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH05116772A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7165766B2 (en) | 2003-10-17 | 2007-01-23 | Brother Kogyo Kabushiki Kaisha | Sheet feeding cassette and image forming apparatus |
-
1991
- 1991-10-24 JP JP3277559A patent/JPH05116772A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7165766B2 (en) | 2003-10-17 | 2007-01-23 | Brother Kogyo Kabushiki Kaisha | Sheet feeding cassette and image forming apparatus |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US3919972A (en) | Automatic cut sheet feeding unit | |
KR100226091B1 (en) | Manual sheet feeding device | |
JP3116448B2 (en) | Paper cassette | |
US4765605A (en) | Paper cassette tray with front edge positioning cams | |
US5328167A (en) | Sheet feed apparatus | |
JPH0234852B2 (en) | ||
US4277059A (en) | Sheet feeder for typewriters | |
US7347415B2 (en) | Paper feeding apparatus of image forming apparatus | |
JPH05116772A (en) | Paper sheet feed cassette | |
JPH107262A (en) | Paper feeder | |
JPH06247568A (en) | Sheet loading device and image recording device | |
JPH1053340A (en) | Sheet feeder cassette | |
JPS6216895B2 (en) | ||
JPH0444509Y2 (en) | ||
JP4189097B2 (en) | Paper cassette | |
JP3860987B2 (en) | Sheet feeding device | |
JPS597306Y2 (en) | Automatic paper feed paper storage cassette | |
JP2002068503A (en) | Paper sheet feeding device, and recording device provided with same device | |
JP3041087B2 (en) | Transfer paper storage device | |
JP3321504B2 (en) | Paper feeder | |
JPH08259023A (en) | Paper sheet separating mechanism | |
JP2580495B2 (en) | Paper feeder | |
JP3449149B2 (en) | Paper feeder | |
JP3680191B2 (en) | Paper feeder | |
JPH05270666A (en) | Paper feed cassette |