JP3285938B2 - Paper feeder - Google Patents
Paper feederInfo
- Publication number
- JP3285938B2 JP3285938B2 JP19554592A JP19554592A JP3285938B2 JP 3285938 B2 JP3285938 B2 JP 3285938B2 JP 19554592 A JP19554592 A JP 19554592A JP 19554592 A JP19554592 A JP 19554592A JP 3285938 B2 JP3285938 B2 JP 3285938B2
- Authority
- JP
- Japan
- Prior art keywords
- cassette
- paper
- paper feed
- sheet feeding
- feed roller
- 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.)
- Expired - Fee Related
Links
Landscapes
- Paper Feeding For Electrophotography (AREA)
- Sheets, Magazines, And Separation Thereof (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、画像形成装置の給紙装
置に係り、特に、多数の用紙を積載し、用紙搬送方向に
直交して機械前面から着脱可能なカセツトを有する給紙
装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a paper feeder for an image forming apparatus, and more particularly to a paper feeder having a cassette on which a large number of sheets are stacked and which can be detached from the front of the machine in a direction perpendicular to the sheet conveying direction. .
【０００２】[0002]
【従来の技術】従来、カセツトから給紙中に何らかの障
害により給紙動作が中断され、給紙コロが下向き状態
（半月コロの場合）で止まつてしまつた場合、詰まつた
用紙を取り除くためにカセツトを機械本体前面に引き出
そうとすると、用紙束に対して給紙コロにより給紙圧が
掛かつているため、給紙コロと底板の間に用紙が挟まれ
たままで引き出されてしまうことになる。2. Description of the Related Art Conventionally, when a paper feed operation is interrupted due to some trouble during paper feed from a cassette and the paper feed roller is stopped in a downward state (in the case of a half moon roller), it is necessary to remove jammed paper. When the cassette is to be pulled out to the front of the machine main body, the paper feed pressure is applied to the sheet bundle by the paper feed roller, so that the paper is pulled out while being sandwiched between the paper feed roller and the bottom plate.
【０００３】[0003]
【発明が解決しようとする課題】従来例のごとく、給紙
コロと底板の間に用紙が挟まれたままカセツトを引き出
すと、用紙が破れて取り除きが困難になつたり、紙片が
機械内に残つてしまう等の不具合が生じ、最悪の場合は
給紙コロやカセツト等の破損につながるという問題があ
つた。As in the prior art, if the cassette is pulled out while the paper is sandwiched between the paper feed roller and the bottom plate, the paper is torn and it becomes difficult to remove the paper, or the paper remains in the machine. In the worst case, there is a problem that paper feed rollers and cassettes are damaged.
【０００４】さらに用紙が吸湿していたり、非常に薄い
用紙では普通にカセツトにセツトしても中央付近が盛り
上がつてしまうことがあり、そのために給紙台や本体ベ
ース等に擦れてしまうことがある。Further, when the paper absorbs moisture or is extremely thin, even when the paper is set in a cassette, the vicinity of the center may be raised, and the paper may be rubbed against the paper feed table or the main body base. There is.
【０００５】本発明は上記従来技術の欠点を解消し、カ
セツト引き出し時の用紙の破れや擦れおよび給紙コロや
カセツトの破損をなくすことができる給紙装置を提供す
ることを目的とする。An object of the present invention is to solve the above-mentioned drawbacks of the prior art and to provide a paper feeder capable of eliminating the tearing and rubbing of the paper when the cassette is pulled out and the breakage of the paper feed roller and the cassette.
【０００６】[0006]
【課題を解決するための手段】上記目的は、多数の用紙
を積載し、用紙搬送方向に直交して機械前面から着脱可
能なカセツトと、用紙を送り出す給紙コロと、カセツト
を収納する給紙台とからなる給紙装置において、カセツ
トの下面の略４隅に脚部を形成すると共に、前記脚部
を、カセツトの着脱方向の前側の脚部と後側の脚部で位
置をずらして配置し、前記各脚部と対向する給紙台の底
面には、カセツトの引き出し方向に向かつて下向きの傾
斜部を有するスロープを前記各脚部に対応して前側と後
側で位置をずらして形成したことにより達成される。SUMMARY OF THE INVENTION It is an object of the present invention to provide a cassette in which a large number of sheets are stacked, and which is detachable from the front of the machine in a direction perpendicular to the sheet conveying direction, a sheet feeding roller for feeding the sheets, and a sheet feeding cassette. in the sheet feeding device comprising a base, to form the leg portion in a substantially four corners of the lower surface of the cassette, said legs
The front and rear legs in the cassette mounting / removal direction.
It arranged staggered location, the Feed Tray bottom facing the respective leg, after the front slope having a downward slope portion One suited to the extraction direction of the cassette to correspond to the respective leg
It is achieved by forming by shifting the position on the side.
【０００７】また、上記において、カセツトの後側面の
一部が本体ベース、もしくは上段の給紙台下面に設けら
れた高さ規制部材によつてガイドされるようにしたこと
により達成される。Further, in the above, it is attained that a part of the rear side surface of the cassette is guided by the height regulating member provided on the main body base or the lower surface of the upper sheet feeding table.
【０００８】[0008]
【０００９】[0009]
【作用】本発明においては、給紙コロが円筒状のもので
ある場合はどのような角度の時でも、また半月状の給紙
コロの場合は下向きの時でも、カセツトの引き出しが１
段下がつて行われるとともに、前側と後側の脚部及びス
ロープが位置をずらしてあるので、カセツトの着脱に際
して、前側のスロープと後側の脚部が干渉することなく
なり、カセツト引き出しに伴う用紙の破れ、擦れ、ある
いは給紙コロ、カセツト自身の破損を防止することがで
きる。また、カセツトの後側面が高さ規制部材によつて
ガイドされることで、カセツト着脱時の上下方向ガタ抑
えることができる。 According to the present invention, the cassette can be pulled out at any angle when the paper feed roller is cylindrical, and downward when the paper feed roller is half-moon-shaped.
Conducted Te stage under month Rutotomoni, the front and rear leg portions and scan
When the cassette is attached or detached, the rope is shifted
The front slope and the rear leg do not interfere
Paper is torn, rubbed,
Paper feed rollers and cassettes themselves.
Wear. In addition, since the rear side surface of the cassette is guided by the height regulating member, the vertical play at the time of attaching and detaching the cassette is suppressed.
Can be obtained.
【００１０】[0010]
【実施例】以下、本発明の実施例を図面に基づいて説明
する。Embodiments of the present invention will be described below with reference to the drawings.
【００１１】図１は実施例に係る給紙装置を複写機本体
の右側から見た断面図、図２は給紙台の底面図、図３は
給紙装置の正面図である。FIG. 1 is a cross-sectional view of a sheet feeding device according to an embodiment viewed from the right side of a copying machine main body, FIG. 2 is a bottom view of a sheet feeding table, and FIG. 3 is a front view of the sheet feeding device.
【００１２】図１において、１は２段に重ねられた給紙
台、２は給紙台１の上に載置された複写機本体、３は給
紙台１に収容されたカセツトであり、このカセツト３
は、用紙補給時、あるいはジヤム処理時には図１におい
て右側（複写機本体２の前側）に引き出され、また通常
の時は左側に移動して給紙台１にセツトされるようにな
つている。In FIG. 1, reference numeral 1 denotes a paper feed tray stacked in two stages, 2 denotes a copying machine main body mounted on the paper feed tray 1, and 3 denotes a cassette accommodated in the paper feed tray 1. This cassette 3
1 is pulled out to the right side (the front side of the copying machine main body 2) in FIG. 1 at the time of paper supply or jam processing, and is normally moved to the left side and set on the paper feed table 1 in normal times.
【００１３】カセツト３にはその着脱方向に対して一直
線上にならないように前２つと後２つの位置をずらして
（図３参照）４隅に脚部（前側の２個を３ａで、また後
側の２個を３ｂで代表して示す）が形成されており、一
方、給紙台１の底面の脚部３ａ，３ｂと対向する位置に
はスロープ４ａ，４ｂ，４ｃ，４ｄが形成されている。
このスロープ４ａ〜４ｄは、カセツト３の引き出し方向
に向かつて下方に傾斜する傾斜部を設けている。スロー
プ４ａ〜４ｄは前述したように、前側と後側で位置をず
らした脚部３ａ，３ｂと対向して形成されているので、
カセツト３の着脱に際して、脚部３ａ，３ｂに対して各
々が干渉しないようになつている。The front 3 and the rear 2 are shifted from the cassette 3 so as not to be in a straight line with respect to the attaching / detaching direction (see FIG. 3). Side is represented by 3b). On the other hand, slopes 4a, 4b, 4c, 4d are formed at positions on the bottom surface of the sheet feed table 1 facing the legs 3a, 3b. I have.
The slopes 4a to 4d are provided with inclined portions which are inclined downward in the direction in which the cassette 3 is pulled out. As described above, since the slopes 4a to 4d are formed to face the legs 3a and 3b whose positions are shifted between the front side and the rear side,
When the cassette 3 is attached or detached, each of them does not interfere with the legs 3a and 3b.
【００１４】即ち、カセツト３を給紙台１に挿入すると
まず脚部３ｂが給紙台１の底面に乗り、挿入するに従つ
て滑る。この時はスロープ４ａ，４ｂの方が外側にある
ため（図２参照）カセツト３は乗り上げない。その後、
脚部３ｂがスロープ４ｃ，４ｄに掛かると、ほぼ同時に
脚部３ａがスロープ４ａ，４ｂに掛かり、カセツト３は
４脚でスロープ４ａ〜４ｄに乗り上げる。最終セツト
時、カセツト３は水平であり、この状態で給紙が行われ
る。That is, when the cassette 3 is inserted into the paper feed table 1, the leg 3b first rides on the bottom surface of the paper feed table 1 and slides as it is inserted. At this time, since the slopes 4a and 4b are outside (see FIG. 2), the cassette 3 does not ride. afterwards,
When the leg 3b is hooked on the slopes 4c and 4d, the leg 3a is hooked on the slopes 4a and 4b almost at the same time, and the cassette 3 rides on the slopes 4a to 4d with four legs. At the time of the final setting, the cassette 3 is horizontal, and sheet feeding is performed in this state.
【００１５】図３に示すように、カセツト３内には加圧
スプリング７によつて上方へ付勢される底板６があり、
その上に用紙が積載される。給紙コロ５は半月状をして
おり、図の状態、即ち半月部を下向きにして待機してい
る。カセツト３の後側面３ｃの一部に形成した突起面３
ｅは上段の給紙台下面の高さ規制部材１ａにガイドさ
れ、カセツト着脱時の上下方向ガタを抑えている。この
高さ規制部材１ａは、給紙台１に一体的に成形すること
も可能である。また、複写機本体２のベース下面に形成
してもよい。As shown in FIG. 3, a bottom plate 6 urged upward by a pressure spring 7 is provided in the cassette 3.
Paper is stacked on it. The paper feed roller 5 has a half-moon shape, and waits in the state shown in the figure, that is, with the half-moon portion facing downward. Projection surface 3 formed on part of rear surface 3c of cassette 3
"e" is guided by the height regulating member 1a on the lower surface of the upper sheet feeding table to suppress vertical play when the cassette is attached and detached. The height regulating member 1a can be formed integrally with the sheet feeding table 1. Further, it may be formed on the lower surface of the base of the copying machine body 2.
【００１６】また、後側板３ｃの先端部の給紙コロ５と
対向する部分は、給紙コロ５が下向きの時、それより上
端縁が低い位置となる給紙コロ逃げ面３ｄとなつてい
る。A portion of the front end of the rear side plate 3c facing the paper feed roller 5 forms a paper feed roller relief surface 3d whose upper edge is lower when the paper feed roller 5 is downward. .
【００１７】このような構成において、給紙中に何らか
の障害で機械が停止してしまい、給紙コロ５が下向きの
状態であつても、カセツト３は引き出されるとスロープ
４ａ〜４ｄを下降するので、用紙は給紙コロ５から離間
される。さらにカセツト３の後側面３ｃは通常は用紙積
載量よりも高くなつているものの、給紙コロ５の付近で
は１段低くなつているので、給紙コロ５が下向きのまま
カセツト３を引き出しても後側面３ｃに給紙コロ５が当
たることがない。In such a configuration, even if the machine stops due to some obstacle during the paper feeding and the paper feed roller 5 is in the downward state, when the cassette 3 is pulled out, the slopes 4a to 4d are lowered. The paper is separated from the paper feed roller 5. Further, although the rear side surface 3c of the cassette 3 is normally higher than the paper stacking amount, it is one step lower near the paper feed roller 5, so that the cassette 3 can be pulled out with the paper feed roller 5 facing down. The feed roller 5 does not hit the rear side surface 3c.
【００１８】なお、給紙コロ５は通常の円筒形コロでも
よく、この場合も、コロ５の下面より上端縁が低い位置
となる給紙コロ逃げ面が形成されていればよい。The feed roller 5 may be an ordinary cylindrical roller. In this case, it is sufficient that the feed roller flank is formed such that the upper end edge is lower than the lower surface of the roller 5.
【００１９】[0019]
【発明の効果】以上説明したように、本発明によれば、
カセツトの下面の略４隅に脚部を形成すると共に、前記
脚部を、カセツトの着脱方向の前側の脚部と後側の脚部
で位置をずらして配置し、各脚部と対向する給紙台の底
面には、カセツトの引き出し方向に向かつて下向きの傾
斜部を有するスロープを各脚部に対応して前側と後側で
位置をずらして形成したため、給紙コロが円筒状のもの
である場合はどのような角度の時でも、また半月状の給
紙コロの場合は下向きの時でも、カセツトの引き出しが
１段下がつて行われるとともに、前側と後側の脚部及び
スロープが位置をずらしてあるので、カセツトの着脱に
際して、前側のスロープと後側の脚部が干渉することな
くなり、カセツト引き出しに伴う用紙の破れ、擦れ、あ
るいは給紙コロ、カセツト自身の破損を防止することが
できる。また、カセツトの後側面が高さ規制部材によつ
てガイドされることで、カセツト着脱時の上下方向ガタ
抑えることができる。 As described above, according to the present invention,
Legs are formed at approximately four corners of the lower surface of the cassette, and
Connect the legs to the front and rear legs in the cassette attachment / detachment direction.
The paper feed tray at the bottom of the paper feed tray facing each leg.
The surface must be tilted downward in the cassette
Slope with slopes at the front and rear corresponding to each leg
The cassette is drawn out of position, so that the cassette can be pulled out one step at any angle when the paper feed roller is cylindrical, or downward when the paper feed roller is half-moon shaped. One taking place Rutotomoni, the legs of the front and rear and
Since the slope is shifted, the cassette can be attached and detached.
In this case, the front slope and the rear leg
Paper, tearing, rubbing,
Or to prevent damage to the paper feed roller and cassette itself.
it can. Further, the side surface after the cassette is cowpea the height regulating member
It is guided Te in the vertical direction play during cassette detachable
Can be suppressed.
【図１】本発明の実施例に係る給紙装置を複写機本体の
左側から見た断面図である。FIG. 1 is a cross-sectional view of a sheet feeding device according to an embodiment of the present invention as viewed from a left side of a copying machine main body.
【図２】本発明の実施例に係る給紙装置の底面図であ
る。FIG. 2 is a bottom view of the sheet feeding device according to the embodiment of the present invention.
【図３】本発明の実施例に係る給紙装置の正面図であ
る。FIG. 3 is a front view of the sheet feeding device according to the embodiment of the present invention.
１ 給紙台 １ａ 高さ規制部材 ３ カセツト ３ａ，３ｂ 脚部 ３ｃ 後側面 ３ｄ 給紙コロ逃げ面 ３ｅ 突起面 ４ａ，４ｂ，４ｃ，４ｄ スロープ ５ 給紙コロ DESCRIPTION OF SYMBOLS 1 Paper feed stand 1a Height regulating member 3 Cassette 3a, 3b Leg 3c Rear side 3d Paper feed roller relief surface 3e Projection surface 4a, 4b, 4c, 4d Slope 5 Paper feed roller
Claims (2)
交して機械前面から着脱可能なカセツトと、用紙を送り
出す給紙コロと、カセツトを収納する給紙台とからなる
給紙装置において、 カセツトの下面の略４隅に脚部を形成すると共に、前記
脚部を、カセツトの着脱方向の前側の脚部と後側の脚部
で位置をずらして配置し、 前記各 脚部と対向する給紙台の底面には、カセツトの引
き出し方向に向かつて下向きの傾斜部を有するスロープ
を前記各脚部に対応して前側と後側で位置をずらして形
成したことを特徴とする給紙装置。1. A paper feeder comprising a cassette on which a large number of papers are stacked and which is detachable from the front of the machine in a direction perpendicular to the paper transport direction, a paper feed roller for feeding the papers, and a paper feed table for storing the cassettes. Forming legs at approximately four corners of the lower surface of the cassette,
Connect the legs to the front and rear legs in the cassette attachment / detachment direction.
In shifting the position placed, the Feed Tray bottom facing the respective leg, front and rear slopes having a downward inclined part One suited to the extraction direction of the cassette to correspond to the respective leg A sheet feeding device formed by shifting the position of the sheet feeding device.
面の一部が本体ベース、もしくは上段の給紙台下面に設
けられた高さ規制部材によつてガイドされるようにした
ことを特徴とする給紙装置。2. The device according to claim 1, wherein a part of the rear side surface of the cassette is guided by a height regulating member provided on a main body base or a lower surface of an upper sheet feeding table. Paper feeder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19554592A JP3285938B2 (en) | 1992-07-22 | 1992-07-22 | Paper feeder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19554592A JP3285938B2 (en) | 1992-07-22 | 1992-07-22 | Paper feeder |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0640581A JPH0640581A (en) | 1994-02-15 |
| JP3285938B2 true JP3285938B2 (en) | 2002-05-27 |
Family
ID=16342886
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19554592A Expired - Fee Related JP3285938B2 (en) | 1992-07-22 | 1992-07-22 | Paper feeder |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3285938B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4622894B2 (en) * | 2006-03-10 | 2011-02-02 | 船井電機株式会社 | Image forming apparatus and paper tray |
-
1992
- 1992-07-22 JP JP19554592A patent/JP3285938B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0640581A (en) | 1994-02-15 |
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|---|---|---|---|
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