JPH10218390A - Paper feeding device - Google Patents

Paper feeding device

Info

Publication number
JPH10218390A
JPH10218390A JP3303897A JP3303897A JPH10218390A JP H10218390 A JPH10218390 A JP H10218390A JP 3303897 A JP3303897 A JP 3303897A JP 3303897 A JP3303897 A JP 3303897A JP H10218390 A JPH10218390 A JP H10218390A
Authority
JP
Japan
Prior art keywords
transfer
sheet
paper
storage unit
unit
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP3303897A
Other languages
Japanese (ja)
Inventor
哲 ▲あら▼明
Satoru Araaki
Original Assignee
Ricoh Co Ltd
株式会社リコー
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 Ricoh Co Ltd, 株式会社リコー filed Critical Ricoh Co Ltd
Priority to JP3303897A priority Critical patent/JPH10218390A/en
Publication of JPH10218390A publication Critical patent/JPH10218390A/en
Granted legal-status Critical Current

Links

Abstract

PROBLEM TO BE SOLVED: To prevent breakage of a transfer mechanism even when an overload occurs during transfer of paper sheets due to a defective setting of paper sheets, in a paper feeding device called tandem type. SOLUTION: When a transfer motor to drive a transfer fence 13 to transfer paper sheets P2 from a second paper sheet containing part 2 to a first paper containing part 1 is energized with a current corresponding to a load exceeding a rated load, the current is automatically cut, the movement of a transfer fence 13 is stopped, and a transfer mechanism 7 is prevented from breakage. During suspension of the transfer, a massage to promote that paper sheets to a second paper sheet containing part 2 are to be correctly set is outputted to the operation part of a duplicator.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION
【0001】[0001]
【発明の属する技術分野】本発明は、複写機、プリンタ
等の画像形成装置に用いられる給紙装置に関し、特に2
つの用紙収容部を並列に配置したタンデムタイプと称さ
れ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 used for an image forming apparatus such as a copying machine, a printer, and the like.
The present invention relates to a tandem type paper feed device in which two paper storage units are arranged in parallel.
【0002】[0002]
【従来の技術及び発明が解決しようとする課題】この種
の給紙装置は、例えば特開平6−340342号公報に
開示されるように、互いに併設された給紙装置及び予備
位置に用紙を積載し、給紙用紙がなくなると予備用紙を
移送するようにし、大量の用紙の円滑な移送を可能にす
るというものがある。
2. Description of the Related Art A paper feeder of this type is, for example, as disclosed in Japanese Patent Laid-Open Publication No. 6-340342, in which a paper feeder is provided adjacent to a paper feeder and a paper is loaded at a preliminary position. However, there is a method in which a spare sheet is transported when paper is exhausted, and a large amount of sheets can be smoothly transported.
【0003】ところが、このような大容量のタンデムタ
イプの給紙装置では、予備側の用紙収容部の用紙を給紙
側の用紙収容部に一括移送するのに要する駆動力が大き
いので、モータのワット数が大きく、当然モータの拘束
トルクも大きくなる。このため、用紙を正しくセットし
ないと通常より大きな負荷が掛かり、ベルト歯飛び、ベ
ルト切れ等の問題が発生しやすく、この点の改善が求め
られていた。
However, in such a large-capacity tandem-type paper feeder, the driving force required to collectively transfer the paper in the spare paper storage unit to the paper storage unit on the paper supply side is large. The wattage is large, and naturally the restraining torque of the motor is also large. For this reason, if the paper is not set correctly, a larger load is applied than usual, and problems such as belt tooth skipping and belt breakage are likely to occur.
【0004】本発明は、このような従来の問題点に鑑み
てなしたもので、ユーザーが過って用紙をセットしても
移送機構が破損することを防止でき、また、用紙を再セ
ットする際の操作性が悪くならない給紙装置を提供する
ことを目的とする。
[0004] The present invention has been made in view of such a conventional problem, and it is possible to prevent the transport mechanism from being damaged even if the user sets the paper by mistake, and to reset the paper. It is an object of the present invention to provide a sheet feeding device that does not deteriorate operability at the time.
【0005】[0005]
【課題を解決するための手段】本発明の給紙装置のうち
請求項1に係るものは、上記目的を達成するために、複
数枚の用紙を積載する第1用紙収容部と、該第1用紙収
容部の用紙を1枚ずつ給紙する給紙手段と、上記第1用
紙収容部の横方向に並列配置した第2用紙収容部と、該
第2用紙収容部の用紙を上記第1用紙収容部へ一括して
移送する移送手段と、上記第2用紙収容部の用紙の有無
を検知する検知手段とを備える給紙装置において、上記
移送手段の駆動部の電流値を検出する検出手段を有し、
上記第2用紙収容部からの上記第1用紙収容部への用紙
移送中に過電流が流れたことを検知した場合に上記用紙
の移送を中止可能としてなることを特徴とする。
According to a first aspect of the present invention, there is provided a sheet feeding device comprising: a first sheet storing portion for stacking a plurality of sheets; Paper feeding means for feeding the sheets of the paper storage unit one by one; a second paper storage unit arranged side by side in the lateral direction of the first paper storage unit; In a sheet feeding device including a transfer unit that transfers the sheet to the storage unit at a time and a detection unit that detects the presence or absence of a sheet in the second sheet storage unit, a detection unit that detects a current value of a driving unit of the transfer unit is provided. Have
The transfer of the paper can be stopped when an overcurrent is detected during the transfer of the paper from the second paper storage to the first paper storage.
【0006】同請求項2に係るものは、上記過電流が流
れたことを検知した場合に、上記第2用紙収容部へ用紙
を正しくセットするように促すメッセージを出す手段を
有することを特徴とする。
According to a second aspect of the present invention, the apparatus further comprises means for issuing a message prompting the user to correctly set sheets in the second sheet storage section when the overcurrent is detected. I do.
【0007】同請求項3に係るものは、上記移送手段が
移送部材と該移送部材のホームポジションの検知手段を
含み、上記移送手段による上記用紙の上記第1用紙収容
部への用紙移送を中止した場合に、上記移送部材をホー
ムポジションまで移動可能としてなることを特徴とす
る。
According to a third aspect of the present invention, the transfer means includes a transfer member and means for detecting a home position of the transfer member, and stops the transfer of the sheet to the first sheet storage portion by the transfer means. In this case, the transfer member can be moved to a home position.
【0008】[0008]
【発明の実施の形態】以下本発明の実施の形態を図面を
参照して説明する。図1は、本発明に係る給紙装置の一
実施形態の断面図、図2は同斜視図、図3は第2用紙収
容部の一括移送機構の斜視図、図4図は第1用紙収容部
の昇降機構の斜視図である。
Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a cross-sectional view of an embodiment of a paper feeding device according to the present invention, FIG. 2 is a perspective view of the same, FIG. 3 is a perspective view of a batch transfer mechanism of a second paper storage unit, and FIG. It is a perspective view of a lifting mechanism of a part.
【0009】この実施形態の給紙装置は、給紙側の第1
用紙収容部1と、予備側の第2用紙収容部2と、第1用
紙収容部1の底板3上の積載用紙P1の最上紙に接して
一枚ずつ給紙する給紙手段4と、第1用紙収容部1の底
板3を昇降させる昇降機構5と、第2用紙収容部2を構
成する底板6上の積載用紙P2を一括して第1用紙収容
部1の底板3上に移送する移送機構7と、第2用紙収容
部2の積載用紙P2の有無を検知する紙有無検知手段1
1とを有する。
The paper feeder according to this embodiment has a first paper feed side.
A sheet storage unit 1, a second sheet storage unit 2 on the spare side, a sheet feeding unit 4 that feeds one sheet at a time in contact with the uppermost sheet of the stacked sheets P <b> 1 on the bottom plate 3 of the first sheet storage unit 1, A lifting mechanism 5 for raising and lowering the bottom plate 3 of the one sheet storage unit 1 and a transfer for transferring the stacked sheets P2 on the bottom plate 6 constituting the second sheet storage unit 2 onto the bottom plate 3 of the first sheet storage unit 1 at a time. Mechanism 7 and paper presence / absence detecting means 1 for detecting the presence / absence of loaded paper P2 in second paper storage unit 2
And 1.
【0010】昇降機構5は、図4によく示されるよう
に、第1用紙収容部1の底板3をワイヤ8によって吊
り、上昇モータ9により適切な給紙位置まで上昇させ、
給紙手段4により一枚ずつ図示せぬ作像部へ給紙可能と
するものである。上昇モータ9は、底板3上に積載され
ている用紙P1の最上面が給紙位置を保つように徐々に
底板3を上昇させ、連続給紙できるように制御される。
そして第1用紙収容部1の用紙P1がなくなると、上昇
モータ9は下限検知センサ10が検知するまで底板3を
下降させる。底板3の下降終了後、第2用紙収容部2に
設けられている紙有無検知センサ11が用紙P2を検知
すると、移送モータ12が回転し、移送フェンス13が
第2用紙収容部2に積載されている用紙を第1用紙収容
部1の底板3上へ一括で移送する。
As shown in FIG. 4, the lifting mechanism 5 suspends the bottom plate 3 of the first paper storage unit 1 with a wire 8 and raises the bottom plate 3 to an appropriate paper feeding position by a lifting motor 9.
The sheet feeding means 4 enables sheet feeding one by one to an image forming unit (not shown). The lifting motor 9 is controlled so as to raise the bottom plate 3 gradually so that the uppermost surface of the sheets P1 stacked on the bottom plate 3 maintains the sheet feeding position, and to continuously feed the sheets.
When the sheet P1 in the first sheet storage unit 1 runs out, the lifting motor 9 lowers the bottom plate 3 until the lower limit detection sensor 10 detects the sheet. After the lowering of the bottom plate 3, when the paper presence / absence detection sensor 11 provided in the second paper storage unit 2 detects the paper P <b> 2, the transport motor 12 rotates, and the transport fence 13 is loaded on the second paper storage unit 2. Are transported in a lump onto the bottom plate 3 of the first paper storage unit 1.
【0011】ここで、例えば、開封直後の用紙束(近年
では500枚で1パックが一般的となっている。)を第
2用紙収容部2に積載する場合は問題ないが、用紙の端
部がきれいにそろっていない裏紙を積載すると、第2用
紙収容部2のサイドフェンス14と用紙の抵抗が大きく
なり、移送機構7に掛かる負荷も大きくなる。そこで本
実施形態の給紙装置では、移送モータ12に規定の負荷
を超える負荷に対応する電流が流れると、自動的に電流
がカットされ、移送フェンス13の移動を停止させて用
紙の移送を中止し、移送機構7が破損しないようにして
ある。また移送が中止されると、ユーザーがそれを認識
できるように、適宜の手段により第2用紙収容部2への
用紙のセットを正しく行うように促すためのメッセージ
を複写機等の操作部に出すようにしている。メッセージ
を操作部に出す手段としては種々の手段を採用できるの
で、ここでは説明を省略する。
Here, for example, there is no problem when the sheet bundle immediately after opening (in recent years, one pack of 500 sheets is generally used) is loaded in the second sheet accommodating section 2, but there is no problem. When the back paper is not properly arranged, the resistance between the side fence 14 of the second paper storage unit 2 and the paper increases, and the load on the transfer mechanism 7 also increases. Therefore, in the sheet feeding device of the present embodiment, when a current corresponding to a load exceeding the specified load flows through the transfer motor 12, the current is automatically cut, the movement of the transfer fence 13 is stopped, and the transfer of the sheet is stopped. However, the transfer mechanism 7 is not damaged. When the transfer is stopped, a message for prompting the user to correctly set the paper in the second paper storage unit 2 by an appropriate means is issued to an operation unit such as a copying machine so that the user can recognize the transfer. Like that. Since various means can be adopted as a means for sending a message to the operation unit, the description is omitted here.
【0012】また移送中に徐々に負荷が大きくなって移
送が中止される場合も考えられ、この場合には移送フェ
ンス13が移送途中の位置で止まっている状態となる。
このままでは、ユーザーが用紙の再セットをする際、第
1用紙収容部1と第2用紙収容部2の両方ともに用紙を
積載できないので操作性が悪くなる。これを防ぐため
に、上述のセットを促すメッセージを出す前に、移送フ
ェンス13をホーム位置(本実施形態では図1で示す左
端位置まで移動させるようにしている。
It is also conceivable that the load gradually increases during the transfer and the transfer is stopped. In this case, the transfer fence 13 is stopped at a position during the transfer.
In this state, when the user resets the sheets, the sheets cannot be loaded in both the first sheet storage section 1 and the second sheet storage section 2, so that the operability is deteriorated. To prevent this, the transfer fence 13 is moved to the home position (in the present embodiment, to the left end position shown in FIG. 1) before the message prompting the above-described setting is issued.
【0013】なお図示及び詳細な説明は省略するが、上
述の動作の制御にはマイクロコンピュータ等を利用した
制御を採用できることは勿論である。
Although illustration and detailed description are omitted, it goes without saying that control using a microcomputer or the like can be employed for controlling the above operation.
【0014】[0014]
【発明の効果】請求項1の給紙装置は、以上説明してき
たように、複数枚の用紙を積載する第1用紙収容部とそ
の横方向に並列配置した第2用紙収容部とを有するいわ
ゆるタンデムタイプの給紙装置において、第2用紙収容
部の用紙を第1用紙収容部へ一括して移送する移送手段
の駆動部に流れる負荷電流を検出しているので、ユーザ
ーが過った用紙のセットをしても移送機構が破損しない
ようにできるという効果がある。
As described above, the sheet feeding device according to the first aspect has a so-called first sheet storing portion for stacking a plurality of sheets and a second sheet storing portion arranged in a lateral direction in parallel with the first sheet storing portion. In the tandem type sheet feeding device, since the load current flowing to the driving unit of the transfer unit that transfers the sheets in the second sheet storage unit to the first sheet storage unit at a time is detected, the user can use There is an effect that the transfer mechanism can be prevented from being damaged even if the setting is performed.
【0015】請求項2の給紙装置は、第2用紙収容部か
ら第1用紙収容部への用紙移送中に過電流が流れた場合
に、第2用紙収容部へ用紙を正しくセットするように促
すメッセージを出すようにしたので、上記共通の効果に
加え、ユーザーが用紙のセット不良であることを認識し
やすく、むやみにサービスマンを呼んだりすることをな
くし得るという効果がある。
According to a second aspect of the present invention, when an overcurrent flows during the transfer of a sheet from the second sheet storage section to the first sheet storage section, the sheet is correctly set in the second sheet storage section. Since the message for prompting is issued, in addition to the above-described common effects, there is an effect that the user can easily recognize that the paper is set improperly and it is not necessary to call a serviceman unnecessarily.
【0016】請求項3の給紙装置は、負荷電流を検出し
て移送手段による用紙移送を中止した場合に、移送部材
をホームポジションまで移動させて戻すことができるの
で、上記共通の効果に加え、ユーザーが用紙を再セット
する時の操作性が低下しないという効果がある。
In the paper feeder according to the third aspect, when the load current is detected and the paper transport by the transport means is stopped, the transport member can be moved back to the home position and returned. This has the effect that the operability when the user resets the paper does not deteriorate.
【図面の簡単な説明】[Brief description of the drawings]
【図1】本発明に係る給紙装置の一実施形態の断面図で
ある。
FIG. 1 is a cross-sectional view of an embodiment of a sheet feeding device according to the present invention.
【図2】同斜視図である。FIG. 2 is a perspective view of the same.
【図3】第2用紙収容部の一括移送機構の斜視図であ
る。
FIG. 3 is a perspective view of a batch transfer mechanism of a second sheet storage unit.
【図4】第1用紙収容部の昇降機構の斜視図である。FIG. 4 is a perspective view of an elevating mechanism of a first sheet storage unit.
【符号の説明】[Explanation of symbols]
1 第1用紙収容部 2 第2用紙収容部 3 第1用紙収容部底板 4 給紙手段 5 昇降機構 6 第2用紙収容部底板 7 移送機構 8 ワイヤ 9 上昇モータ 10 下限検知センサ 11 紙有無検知センサ 12 移送モータ 13 移送フェンス 14 サイドフェンス P1 第1用紙収容部に積載した用紙 P2 第2用紙収容部に積載した用紙 DESCRIPTION OF SYMBOLS 1 1st paper storage part 2 2nd paper storage part 3 1st paper storage part bottom plate 4 paper feeding means 5 elevating mechanism 6 2nd paper storage part bottom plate 7 transfer mechanism 8 wire 9 raising motor 10 lower limit detection sensor 11 paper presence / absence detection sensor 12 transfer motor 13 transfer fence 14 side fence P1 paper loaded in the first paper storage P2 paper loaded in the second paper storage

Claims (3)

    【特許請求の範囲】[Claims]
  1. 【請求項1】 複数枚の用紙を積載する第1用紙収容部
    と、該第1用紙収容部の用紙を1枚ずつ給紙する給紙手
    段と、上記第1用紙収容部の横方向に並列配置した第2
    用紙収容部と、該第2用紙収容部の用紙を上記第1用紙
    収容部へ一括して移送する移送手段と、上記第2用紙収
    容部の用紙の有無を検知する検知手段とを備える給紙装
    置において、上記移送手段の駆動部の電流値を検出する
    検出手段を有し、上記第2用紙収容部からの上記第1用
    紙収容部への用紙移送中に過電流が流れたことを検知し
    た場合に上記用紙の移送を中止可能としてなることを特
    徴とする給紙装置。
    A first sheet storage unit for stacking a plurality of sheets, a sheet feeding unit for feeding the sheets in the first sheet storage unit one by one, and a side-by-side parallel arrangement of the first sheet storage unit; 2nd placed
    A sheet supply unit including a sheet storage unit, a transfer unit that collectively transfers the sheets of the second sheet storage unit to the first sheet storage unit, and a detection unit that detects the presence or absence of a sheet in the second sheet storage unit The apparatus has a detecting unit for detecting a current value of a driving unit of the transfer unit, and detects that an overcurrent has flowed during transfer of the sheet from the second sheet storage unit to the first sheet storage unit. A sheet feeding device capable of stopping the transfer of the sheet in a case.
  2. 【請求項2】 上記過電流が流れたことを検知した場合
    に、上記第2用紙収容部へ用紙を正しくセットするよう
    に促すメッセージを出す手段を有することを特徴とする
    請求項1の給紙装置。
    2. The sheet feeder according to claim 1, further comprising means for issuing a message prompting the user to correctly set the sheet in the second sheet storage portion when the overcurrent is detected. apparatus.
  3. 【請求項3】 上記移送手段が移送部材と該移送部材の
    ホームポジションの検知手段を含み、上記移送手段によ
    る上記用紙の上記第1用紙収容部への用紙移送を中止し
    た場合に、上記移送部材をホームポジションまで移動可
    能としてなることを特徴とする請求項1また2の給紙装
    置。
    3. The transfer member, wherein the transfer means includes a transfer member and a home position detecting means for detecting the home position of the transfer member, and when the transfer of the sheet by the transfer means to the first sheet storage portion is stopped. 3. The sheet feeding device according to claim 1, wherein the sheet feeding device is movable to a home position.
JP3303897A 1997-01-30 1997-01-30 Paper feeding device Granted JPH10218390A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3303897A JPH10218390A (en) 1997-01-30 1997-01-30 Paper feeding device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3303897A JPH10218390A (en) 1997-01-30 1997-01-30 Paper feeding device

Publications (1)

Publication Number Publication Date
JPH10218390A true JPH10218390A (en) 1998-08-18

Family

ID=12375630

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3303897A Granted JPH10218390A (en) 1997-01-30 1997-01-30 Paper feeding device

Country Status (1)

Country Link
JP (1) JPH10218390A (en)

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