JPH0585647A - Manual insertion paper feeder - Google Patents
Manual insertion paper feederInfo
- Publication number
- JPH0585647A JPH0585647A JP3276737A JP27673791A JPH0585647A JP H0585647 A JPH0585647 A JP H0585647A JP 3276737 A JP3276737 A JP 3276737A JP 27673791 A JP27673791 A JP 27673791A JP H0585647 A JPH0585647 A JP H0585647A
- Authority
- JP
- Japan
- Prior art keywords
- roller
- manual
- manual feed
- sheet
- guide
- 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
- Handling Of Cut Paper (AREA)
- Paper Feeding For Electrophotography (AREA)
- Manual Feeding Of Sheets (AREA)
- Sheets, Magazines, And Separation Thereof (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】この発明は、例えばレ−ザプリン
タ・複写機・ファクシミリなどの電子写真装置等に用い
られる手差し給紙装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a manual sheet feeder used for an electrophotographic apparatus such as a laser printer, a copying machine and a facsimile.
【０００２】[0002]
【従来の技術】この種の手差し給紙装置は、シ−トサイ
ズが大きい場合のために手差しトレイを大きくすると邪
魔になり、反対に手差しトレイを小さくするとシ−トが
落下しやすくなる。そこで、これらのことを勘案して、
従来は手差しトレイをある程度の大きさにしていた。し
かし、それでもシ−トを押し込まないとシ−トが落下し
たり、手差しロ−ラへの食い込みが悪く不送りが発生し
たりした。そこで、特開昭６１−２３５３２９号のよう
に、手差し検知センサを設けて手差しシ−トが手差しト
レイ上にセットされたことを検知したとき手差しロ−ラ
を一定時間駆動して手差しシ−トをこの手差しロ−ラで
保持し、確実に給紙するようにしたものがあった。2. Description of the Related Art In this type of manual sheet feeding device, if the sheet size is large, increasing the size of the manual feeding tray will be an obstacle, and if the size of the manual feeding tray is reduced, the sheet will easily fall. So, considering these things,
Conventionally, the manual feed tray has been sized to some extent. However, even if the sheet was not pushed in, the sheet dropped, or the sheet did not bite into the manual feed roller badly, and a feed failure occurred. Therefore, as disclosed in Japanese Patent Laid-Open No. 61-235329, when a manual feed detection sensor is provided and it is detected that the manual feed sheet is set on the manual feed tray, the manual feed roller is driven for a predetermined time to manually feed the sheet. In some cases, the paper was held by this manual feed roller so that the paper could be reliably fed.
【０００３】[0003]
【発明が解決しようとする課題】ところが、上記の手差
し装置は、手差しロ−ラを一定時間駆動するためのクラ
ッチや駆動モ−タ等の駆動手段及びこれらの制御手段な
どが必要であった。そのため、装置が大型となるととも
に、コストが上昇するという問題点があった。However, the above-mentioned manual feed device requires a driving means such as a clutch and a drive motor for driving the manual feed roller for a certain period of time, and a control means for these. Therefore, there is a problem that the device becomes large and the cost increases.
【０００４】そこで、この発明の目的は、シ−トの不送
りを発生することなく、装置を小型で低コストとするこ
とにある。SUMMARY OF THE INVENTION Therefore, an object of the present invention is to reduce the size of the apparatus and reduce the cost without causing the sheet not to be fed.
【０００５】[0005]
【課題を解決するための手段】そのため、請求項１に記
載の手差し給紙装置は、例えば以下の図示実施例のよう
に、駆動ロ−ラ２４ａと、その駆動ロ−ラ２４ａに押し
当てる従動ロ−ラ２４ｂと、その従動ロ−ラ２４ｂの従
動ロ−ラ軸２４ｄを中心として揺動する手差しガイド３
９と、その手差しガイド３９で手差しロ−ラ軸４１ａを
中心として回転自在に支持するとともに、前記従動ロ−
ラ２４ｂからの回転は伝達されるが、その従動ロ−ラ２
４ｂへは回転を伝達しない手差しロ−ラ４１と、前記手
差しガイド３９をバネ付勢してその手差しロ−ラ４１が
押し当てられ、前記手差しガイド３９との間で手差しシ
−トを案内する搬送ガイド３６とで構成してなる、こと
を特徴とする。Therefore, the manual sheet feeder according to the first aspect of the present invention, for example, as shown in the following embodiment, has a driving roller 24a and a driven roller 24a which is pressed against the driving roller 24a. The roller 24b and the manual feed guide 3 which swings around the driven roller shaft 24d of the driven roller 24b.
9 and a manual feed guide 39 rotatably support the manual feed roller shaft 41a as a center, and the driven roller
The rotation from the rotor 24b is transmitted, but the driven roller 2
The manual feed roller 41 that does not transmit rotation to 4b and the manual feed guide 39 are urged by a spring to push the manual feed roller 41, and guide the manual feed sheet with the manual feed guide 39. It is characterized in that it is configured with the transport guide 36.
【０００６】また、請求項２に記載のこの発明は、例え
ば以下の図示実施例のように、請求項１に記載の手差し
給紙装置１９において、前記手差しロ−ラ４１と前記搬
送ガイド３６間に挿入したシ−トを突き当てるストッパ
４３と、そのストッパ４３を退避位置へと移動して前記
シ−トの突き当てを解除するソレノイド４５とを備えて
なる、ことを特徴とする。Further, according to a second aspect of the present invention, for example, as in the following illustrated embodiment, in the manual sheet feeding device 19 according to the first aspect, between the manual feeding roller 41 and the conveyance guide 36. And a solenoid 45 for moving the stopper 43 to a retracted position to release the abutment of the sheet.
【０００７】また、請求項３に記載のこの発明は、例え
ば以下の図示実施例のように、請求項１に記載の手差し
給紙装置１９において、前記従動ロ−ラ軸２４ｄに固定
する従動ロ−ラ歯車４０と、その従動ロ−ラ歯車４０と
噛み合い、側面に駆動突起４９ａを有する第一中間歯車
４９と、その第一中間歯車４９を回転自在に支持する中
間車軸４８と、前記手差しロ−ラ軸４１ａに固定する手
差しロ−ラ歯車４２と、その手差しロ−ラ歯車４２と噛
み合い、側面に前記駆動突起４９ａと回転に伴い係合す
る従動突起５０ａを有し、前記中間車軸４８上で回転自
在に支持する第二中間歯車５０とを備え、前記手差しロ
−ラ４１が前記従動ロ−ラ２４ｂからの回転は伝達され
るが、その従動ロ−ラ２４ｂへは回転を伝達しない構成
としてなる、ことを特徴とする。Further, according to a third aspect of the present invention, a driven roller fixed to the driven roller shaft 24d in the manual sheet feeding device 19 according to the first aspect of the invention, for example, as shown in the following embodiment. -A gear 40, a first intermediate gear 49 that meshes with the driven roller gear 40 and has a drive protrusion 49a on its side surface, an intermediate axle 48 that rotatably supports the first intermediate gear 49, and the manual feed roller. -A manual roller roller gear 42 fixed to the rotary shaft 41a and a driven projection 50a which meshes with the manual roller roller gear 42 and engages with the drive projection 49a along with rotation on the side surface. And a second intermediate gear 50 that is rotatably supported by the manual feed roller 41b. The manual feed roller 41 transmits the rotation from the driven roller 24b, but does not transmit the rotation to the driven roller 24b. To become And it features.
【０００８】[0008]
【作用】そして、請求項１に記載の発明では、従動ロ−
ラ２４ｂへは回転を伝達せずに手差しロ−ラ４１を回転
して手差しシ−トを搬送ガイド３６と手差しガイド３９
とで案内して差し込み、手差しロ−ラ４１と搬送ガイド
３６間に保持させる。In the invention described in claim 1, the driven roller is
The manual feed roller 41 is rotated without transmitting the rotation to the la 24b to transfer the manual feed sheet to the transport guide 36 and the manual feed guide 39.
It is guided and inserted by and is held between the manual feed roller 41 and the conveyance guide 36.
【０００９】また、請求項２に記載の発明では、手差し
ロ−ラ４１と搬送ガイド３６間に挿入した手差しシ−ト
をストッパ４３に突き当てて止め、ソレノイド４５によ
ってその突き当てを解除して手差しシ−トを給紙する。According to the second aspect of the invention, the manual sheet inserted between the manual roller 41 and the transport guide 36 is abutted against the stopper 43 and stopped, and the solenoid 45 releases the abutment. Feed the bypass sheet.
【００１０】また、請求項３に記載の発明では、従動ロ
−ラ４１の回転により従動ロ−ラ歯車４０が第一中間歯
車４９を回転し、第一中間歯車４９が側面の駆動突起４
９ａを第二中間歯車５０側面の従動突起５０ａと係合し
て第二中間歯車５０を従動回転し、手差しロ−ラ歯車４
２を回転させて、手差しロ−ラ４１を回転する。また、
第二中間歯車５０の側面の従動突起５０ａが第一中間歯
車４９側面の駆動突起４９ａと係合するまで手差しロ−
ラ４１を回転して手差しシ−トを手差しロ−ラ４１と搬
送ガイド３６間に送り込んで保持させる。According to the third aspect of the present invention, the driven roller gear 40 rotates the first intermediate gear 49 by the rotation of the driven roller 41, and the first intermediate gear 49 causes the side surface of the drive protrusion 4 to rotate.
9a is engaged with the driven protrusion 50a on the side surface of the second intermediate gear 50 to rotate the second intermediate gear 50, and the manual feed roller gear 4
2 is rotated to rotate the manual feed roller 41. Also,
The driven protrusion 50a on the side surface of the second intermediate gear 50 is manually inserted until it engages with the driving protrusion 49a on the side surface of the first intermediate gear 49.
By rotating the roller 41, the manual sheet is sent between the manual roller 41 and the transport guide 36 and held.
【００１１】[0011]
【実施例】以下、図面を参照しつつ、この発明の実施例
について説明する。Embodiments of the present invention will be described below with reference to the drawings.
【００１２】図７は、この発明の一実施例である手差し
給紙装置を備えるレーザプリンタの内部機構を示す全体
構成概略図である。図中符号１０で示すものは、プリン
タ本体である。そのプリンタ本体１０内には、ほぼ中央
にベルト状の感光体１１を設ける。その感光体１１の周
りには、図中矢印で示す駆動方向に順に、帯電器１２、
現像器１３、転写器１４、クリーニング器１５を配置す
る。そして、帯電器１２およびクリーニング器１５の下
側に光書込み器１６を配置する。また、その光書込み器
１６の下側に、シートをセットした給紙カセット１８を
着脱自在に取り付ける。さらに、プリンタ本体１０の図
中右の正面側には、その上部寄りに、この発明による手
差し給紙装置１９を設ける。このプリンタ本体１０の上
側には、第１排紙スタック部２０を設ける。図中左の背
面側には、第２排紙スタック部２１を設ける。そして、
第２の排紙スタック部２１には、排紙トレイ２２を着脱
自在に取り付ける。FIG. 7 is a schematic diagram showing the entire internal structure of a laser printer including a manual sheet feeder according to an embodiment of the present invention. Reference numeral 10 in the drawing denotes the printer body. In the printer body 10, a belt-shaped photoconductor 11 is provided at the substantially center. Around the photosensitive member 11, a charger 12,
A developing device 13, a transfer device 14, and a cleaning device 15 are arranged. Then, the optical writer 16 is arranged below the charger 12 and the cleaner 15. Further, below the optical writer 16, a sheet feeding cassette 18 in which sheets are set is detachably attached. Further, on the front side on the right side of the printer body 10 in the figure, a manual sheet feeding device 19 according to the present invention is provided near the upper part thereof. A first paper discharge stack section 20 is provided on the upper side of the printer body 10. A second sheet discharge stack section 21 is provided on the left rear side in the figure. And
A discharge tray 22 is detachably attached to the second discharge stack unit 21.
【００１３】しかして、手差し給紙装置１９からまた
は、給紙ローラ２３を駆動して給紙カセット１８からシ
ートを送り出し、搬送ロ−ラ２４で矢印Ａ方向に搬送す
る。そして、そのシ−トをタイミングをとってレジスト
ローラ２５によって感光体１１の上側へと送り込む。感
光体１１は、矢示するごとく反時計方向に駆動し、その
際、帯電器１２によって表面を一様に帯電し、光書込み
器１６からのレーザ光を照射して感光体１１上に静電潜
像を形成する。この潜像は、現像器１３を通るときトナ
ーによって可視像化する。そして、この可視像は、感光
体１１の上側に搬送したシ−トの下面に転写器１４によ
り転写する。転写後、シ−トを定着器２６に搬送し、転
写画像を定着する。Then, the sheet is fed from the sheet feeding cassette 18 by driving the sheet feeding device 23 or the sheet feeding roller 23, and the sheet is conveyed by the conveying roller 24 in the arrow A direction. Then, the sheet is sent to the upper side of the photoconductor 11 by the registration roller 25 at a timing. The photoconductor 11 is driven counterclockwise as shown by the arrow, and at that time, the surface thereof is uniformly charged by the charger 12, and the laser beam from the optical writer 16 is irradiated to electrostatically charge the photoconductor 11. Form a latent image. This latent image is visualized by toner as it passes through the developing device 13. Then, this visible image is transferred by the transfer device 14 to the lower surface of the sheet conveyed to the upper side of the photoconductor 11. After the transfer, the sheet is conveyed to the fixing device 26 to fix the transferred image.
【００１４】画像定着後、シ−トを定着器２６から排紙
ローラ２７で送り出し、さらに搬送ガイド２８で上方に
案内して反転し、排紙ローラ２９によって矢印Ｂ方向に
排出して第１排紙スタック部２０上に順次スタックす
る。また、シ−トが封筒やＯＨＰシート等の場合には、
切換ガイド３０で排紙方向を切り換えて排紙ローラ２７
でそのまま矢印Ｃ方向に送り出し、第２排紙スタック部
２１上に順次スタックする。一方、可視像転写後の感光
体１１は、その表面をクリーニング器１５でクリーニン
グする。After the image is fixed, the sheet is sent out from the fixing device 26 by the paper discharge roller 27, is guided upward by the conveyance guide 28 and is inverted, and is discharged in the direction of the arrow B by the paper discharge roller 29 to be first discharged. The sheets are sequentially stacked on the paper stack unit 20. If the sheet is an envelope or OHP sheet,
The discharge guide 27 is used to switch the discharge direction to discharge the discharge roller 27.
Then, the sheet is sent as it is in the direction of the arrow C, and is sequentially stacked on the second discharged sheet stack portion 21. On the other hand, the surface of the photoconductor 11 after the transfer of the visible image is cleaned by the cleaning device 15.
【００１５】ところで、手差し給紙装置１９は、以下の
ように構成する。即ち、図１に示すように、プリンタ本
体１０に正面側へ突出する給紙トレイ３５を設け、プリ
ンタ本体１０内には、搬送ガイド３６を搬送ロ−ラ２４
と排紙トレイ３５間にわたって設ける。また、搬送ロ−
ラ２４は、上側の従動ロ−ラ２４ｂと下側の駆動ロ−ラ
２４ａとからなっている。そして、図２に示すように、
駆動ロ−ラ２４ａの軸２４ｃをプリンタ本体１０の両側
板１０ａ間に支持し、その一端に駆動歯車３１を設け
る。そして、従動ロ−ラ２４ｂの軸２４ｄを支持する軸
受３７とプリンタ本体１０との間に圧接バネ３８を設
け、従動ロ−ラ２４ｂを駆動ロ−ラ２４ａに押し当て
る。By the way, the manual sheet feeder 19 is constructed as follows. That is, as shown in FIG. 1, the printer body 10 is provided with a paper feed tray 35 protruding to the front side, and a conveyance guide 36 is provided in the printer body 10 with a conveyance guide 36.
And the discharge tray 35. In addition, the transport roll
The roller 24 is composed of an upper driven roller 24b and a lower driving roller 24a. Then, as shown in FIG.
A shaft 24c of the drive roller 24a is supported between both side plates 10a of the printer body 10, and a drive gear 31 is provided at one end thereof. Then, a pressure contact spring 38 is provided between the bearing 37 that supports the shaft 24d of the driven roller 24b and the printer body 10, and the driven roller 24b is pressed against the drive roller 24a.
【００１６】そして、図３にも示すように、従動ロ−ラ
２４ｂの軸２４ｄを手差しガイド３９の立ち上げた両側
板３９ａに挿通し、手差しガイド３９を軸２４ｄを中心
として揺動自在に設け、そのガイド面を搬送ガイド３６
に沿わせる。また、軸２４ｄに従動ロ−ラ歯車４０を固
定する。手差しガイド３９に給紙トレイ３５側から切り
込んだ切り欠き部３９ｂを設け、その切り欠き部３９ｂ
内には、手差しガイド３９の両側板３９ａ間に軸４１ａ
で回動自在に支持した手差しロ−ラ４１を設ける。そし
て、図１に示すように、捻じりコイルバネ４２を従動ロ
−ラ２４ｂの軸２４ｄに設け、その一端をレ−ザプリン
タの外装ケ−ス１０ａの下面に設けたブラケット１０ｂ
で、他端を手差しガイド３９の上面に当てて手差しガイ
ド３９の給紙トレイ３５側を搬送ガイド３６側に向けて
付勢し、手差しロ−ラ４１を搬送ガイド３６の面に圧接
する。また、手差しロ−ラ４１の軸４１ａに手差しロ−
ラ歯車４２を固定する。As shown in FIG. 3, the shaft 24d of the driven roller 24b is inserted through both side plates 39a of the manual feed guide 39 which is raised, and the manual feed guide 39 is swingably provided around the shaft 24d. , The guide surface of the conveyance guide 36
Follow. Further, the driven roller gear 40 is fixed to the shaft 24d. The manual feed guide 39 is provided with a cutout portion 39b cut from the paper feed tray 35 side, and the cutout portion 39b is provided.
There is a shaft 41a between both side plates 39a of the manual feed guide 39.
A manual feed roller 41 rotatably supported by is provided. As shown in FIG. 1, a torsion coil spring 42 is provided on the shaft 24d of the driven roller 24b, and one end of the bracket 10b is provided on the lower surface of the exterior case 10a of the laser printer.
Then, the other end is brought into contact with the upper surface of the manual feed guide 39 to urge the paper feed tray 35 side of the manual feed guide 39 toward the transport guide 36 side, and the manual feed roller 41 is pressed against the surface of the transport guide 36. In addition, the shaft 41a of the manual feed roller 41 is manually attached to the shaft.
The gear 42 is fixed.
【００１７】また、搬送ガイド３６の下側にストッパ４
３をその給紙トレイ３５側を支軸４４で揺動自在に支持
し、搬送ロ−ラ２４側の両側部を上方に曲げて爪部４３
ａを形成する。そして、支軸４４と爪部４３ａとの中間
を下側からソレノイド４５で支持し、爪部４３ａを搬送
ガイド３６の窓３６ａ及び手差しガイド３９の切り欠き
部３９ｂを通して手差しガイド３９の上面から突出させ
て出没自在に支持するとともに、支軸４４に捻じりコイ
ルバネ４６を設けて一端をストッパ４３の下面に、他端
を外装ケ−ス１０ａの内面に押し当てて爪部４３ａ側を
上方へ付勢する。また、搬送ガイド３６の下側に搬送ガ
イド３６面上に起立するシ−ト検知センサ４７を起伏自
在に設ける。Further, the stopper 4 is provided below the transport guide 36.
3, the paper feed tray 35 side is swingably supported by a support shaft 44, and both side portions on the transport roller 24 side are bent upward to form a claw portion 43.
a is formed. Then, the middle of the support shaft 44 and the claw portion 43a is supported from below by a solenoid 45, and the claw portion 43a is projected from the upper surface of the manual feed guide 39 through the window 36a of the transport guide 36 and the cutout portion 39b of the manual feed guide 39. The support shaft 44 is provided with a torsion coil spring 46, one end of which is pressed against the lower surface of the stopper 43 and the other end of which is pressed against the inner surface of the exterior case 10a to urge the claw portion 43a side upward. To do. In addition, a sheet detection sensor 47 that stands upright on the surface of the transport guide 36 is provided below the transport guide 36 so that it can be raised and lowered.
【００１８】更に、図３に示すように、手差しガイド３
９の一方の側板３９ａに中間車軸４８を設ける。そし
て、図４、図５にも示すように、その中間車軸４８上に
従動ロ−ラ歯車４０と噛み合い、側面に、図６に示すよ
うな駆動突起４９ａを有する第一中間歯車４９を回転自
在に支持し、また、手差しロ−ラ歯車４２と噛み合い、
第一中間歯車４９と同様に側面に従動突起５０ａを有す
る第二中間歯車５０を回転自在に支持する。Further, as shown in FIG. 3, the manual feed guide 3
An intermediate axle 48 is provided on one side plate 39a of the nine. Then, as shown in FIGS. 4 and 5, the first intermediate gear 49, which meshes with the driven roller gear 40 on the intermediate axle 48 and has a drive protrusion 49a as shown in FIG. , And also meshes with the manual roller gear 42,
Similarly to the first intermediate gear 49, the second intermediate gear 50 having the driven protrusion 50a on the side surface is rotatably supported.
【００１９】そして、給紙トレイ３５からそのサイドガ
イド３５ａで両側をガイドして手差しシ−トを搬送ガイ
ド３６上で手差しロ−ラ４１まで送り込むと、検知セン
サ４７が倒れて手差しシ−トが送り込まれたことを検知
して、プリンタ本体１０の制御部に信号を送る。更に、
手差しシ−トを手差しロ−ラ４１と搬送ガイド３６間に
差し込むと、差し込みに連れて手差しロ−ラ４１が回転
し、手差しロ−ラ４１と同軸の手差しロ−ラ歯車４２が
これと噛み合う第二中間歯車５０を回転し、その従動突
起５０ａが第一中間歯車４９の駆動突起４９ａと突き当
たって係合するまでの略１回転を、従動ロ−ラ歯車４０
へは回転を伝達しないで自由に回転する。そして、手差
しシ−トがストッパ４３の爪部４３ａに係合するまで差
し込まれて手差しシ−トが搬送ガイド３６と手差しロ−
ラ４１間に保持される。Then, when the manual feed sheet is guided from the paper feed tray 35 by the side guides 35a on both sides and fed to the manual feed roller 41 on the transport guide 36, the detection sensor 47 falls and the manual feed sheet is released. When it is detected that it has been sent, a signal is sent to the control unit of the printer body 10. Furthermore,
When the manual feed sheet is inserted between the manual feed roller 41 and the conveyance guide 36, the manual feed roller 41 rotates as it is inserted, and the manual feed roller gear 42 coaxial with the manual feed roller 41 meshes with the manual feed roller 41. The driven roller gear 40 is rotated about one rotation until the driven projection 50a of the second intermediate gear 50 is rotated and the driven projection 50a abuts and engages with the drive projection 49a of the first intermediate gear 49.
It rotates freely without transmitting rotation to. Then, the manual feed sheet is inserted until it engages with the claw portion 43a of the stopper 43, and the manual feed sheet is inserted into the transport guide 36 and the manual feed roll.
It is held between LA 41.
【００２０】そこで、プリント信号を受けると、ソレノ
イド４５が作動してストッパ４３を捻じりコイルバネ４
６の付勢力に抗して引き下げ、爪部４３ａを搬送ガイド
より引き込むとともに、駆動ロ−ラ２４ａの軸２４ｃが
駆動歯車３１に図示しない駆動モ−タから回転を伝達さ
れて回転する。そして、従動ロ−ラ２４ｂが駆動ロ−ラ
２４ａと連れ廻りし、従動ロ−ラ２４ｂと同軸の従動ロ
−ラ歯車４０が回転してこれと噛み合う第一中間歯車４
９が回転し、その駆動突起４９ａが従動突起５０ａと係
合して第一中間歯車４９とともに第二中間歯車５０が回
転する。更に、第二中間歯車５０が、これと噛み合う手
差しロ−ラ歯車４２を回転して手差しロ−ラ４１が回転
する。そして、手差しロ−ラ４１と搬送ガイド３６間で
保持されている手差しシ−トが手差しロ−ラ４１により
搬送ロ−ラ２４へ搬送される。Then, when the print signal is received, the solenoid 45 is actuated to twist the stopper 43 and twist the coil spring 4.
6, the claw portion 43a is pulled in from the conveyance guide, and the shaft 24c of the drive roller 24a is rotated by the rotation of the drive gear 31 from a drive motor (not shown). Then, the driven roller 24b rotates together with the drive roller 24a, and the driven roller gear 40 coaxial with the driven roller 24b rotates and meshes with the first intermediate gear 4.
9 rotates, the drive protrusion 49a engages with the driven protrusion 50a, and the second intermediate gear 50 rotates together with the first intermediate gear 49. Further, the second intermediate gear 50 rotates the manual feed roller gear 42 meshing with the second intermediate gear 50, and the manual feed roller 41 rotates. Then, the manual feed sheet held between the manual feed roller 41 and the transport guide 36 is transported by the manual feed roller 41 to the transport roller 24.
【００２１】[0021]
【発明の効果】従って、請求項１に記載の発明によれ
ば、従動ロ−ラへは回転を伝達せずに手差しロ−ラを回
転して手差しシ−トを搬送ガイドと手差しガイドとで案
内して差し込み、手差しロ−ラと搬送ガイド間に保持さ
せるので、手差しロ−ラを回転させたり、停止させたり
するための用としてクラッチや駆動モ−タ等の駆動手段
及びこれらの制御手段などを設ける必要がなく、且つシ
−トの不送りを生ずることなく、装置を小型で低コスト
とすることができる。Therefore, according to the first aspect of the present invention, the manual feed roller is rotated without transmitting the rotation to the driven roller, and the manual feed sheet is operated by the transport guide and the manual feed guide. Since the guide roller is guided and inserted and held between the manual feed roller and the conveyance guide, drive means such as a clutch and a drive motor and their control means for rotating or stopping the manual feed roller. It is possible to reduce the size and cost of the apparatus without needing to provide the above, and without causing the sheet not to be fed.
【００２２】また、請求項２に記載の発明によれば、手
差しロ−ラと搬送ガイド間に挿入した手差しシ−トをス
トッパに突き当て、ソレノイドによってその突き当てを
解除して手差しシ−トを給紙するので、手差しシ−トの
差し込みを一定の長さとすることができる。そのため、
手差しシ−トの差し込み程度を考慮する必要がなく、手
差し操作が容易にできる。According to the second aspect of the present invention, the manual feed sheet inserted between the manual feed roller and the transport guide is abutted against the stopper, and the abutment is released by the solenoid to release the manual feed sheet. Since the paper is fed, the insertion of the manual feed sheet can be made constant. for that reason,
There is no need to consider the insertion degree of the manual feed sheet, and the manual feed operation can be facilitated.
【００２３】また、請求項３に記載の発明によれば、第
二中間歯車の側面の従動突起が第一中間歯車側面の駆動
突起と係合するまで手差しロ−ラを回転して手差しシ−
トを手差しロ−ラと搬送ガイド間に送り込んで保持させ
ることができ、従動ロ−ラの回転により従動ロ−ラ歯車
が第一中間歯車を回転し、第一中間歯車が側面の駆動突
起を第二中間歯車側面の従動突起と係合して第二中間歯
車を従動回転し、手差しロ−ラ歯車を回転させて、手差
しロ−ラを回転するので、手差しシ−トを搬送すること
ができ、クラッチなどを使用する必要がない。According to the invention of claim 3, the manual feed roller is rotated until the driven projection on the side surface of the second intermediate gear engages with the drive projection on the side surface of the first intermediate gear.
Can be fed between the manual feed roller and the conveyance guide and held, the driven roller gear rotates the first intermediate gear by the rotation of the driven roller, and the first intermediate gear causes the drive projection on the side surface to rotate. Since the second intermediate gear is driven to rotate by engaging with the driven protrusion on the side surface of the second intermediate gear and the manual feed roller gear is rotated to rotate the manual feed roller, the manual feed sheet can be conveyed. Yes, you don't have to use a clutch.
【図１】この発明の一実施例である手差し給紙装置の概
略構成を示す断面図である。FIG. 1 is a cross-sectional view showing a schematic configuration of a manual sheet feeding device according to an embodiment of the present invention.
【図２】その搬送ロ−ラ部分の概略構成図である。FIG. 2 is a schematic configuration diagram of a transport roller portion thereof.
【図３】その手差し給紙装置の要部を示す斜視図であ
る。FIG. 3 is a perspective view showing a main part of the manual paper feeding device.
【図４】その搬送ロ−ラの従動ロ−ラから手差しロ−ラ
への回転伝達を示す歯車列構成を示す正面図である。FIG. 4 is a front view showing a gear train configuration showing rotation transmission from a driven roller of the transport roller to a manual insertion roller.
【図５】その側面図である。FIG. 5 is a side view thereof.
【図６】その第一中間歯車の斜視図である。FIG. 6 is a perspective view of the first intermediate gear.
【図７】その手差し給紙装置を備えるレ−ザプリンタの
全体概略構成図である。FIG. 7 is an overall schematic configuration diagram of a laser printer including the manual paper feeding device.
１９ 手差し給紙装置 ２４ａ 駆動ロ−ラ ２４ｂ 従動ロ−ラ ２４ｄ 従動ロ−ラ軸 ３６ 搬送ガイド ３９ 手差しガイド ４０ 従動ロ−ラ歯車 ４１ 手差しロ−ラ ４１ａ 手差しロ−ラ軸 ４２ 手差しロ−ラ歯車 ４３ ストッパ ４５ ソレノイド ４８ 中間車軸 ４９ 第一中間歯車 ４９ａ 駆動突起 ５０ 第二中間歯車 ５０ａ 従動突起 19 Manual Paper Feeding Device 24a Drive Roller 24b Driven Roller 24d Driven Roller Shaft 36 Transport Guide 39 Manual Feed Guide 40 Driven Roller Gear 41 Manual Feed Roller 41a Manual Feed Roller Shaft 42 Manual Feed Roller Gear 43 Stopper 45 Solenoid 48 Intermediate Axle 49 First Intermediate Gear 49a Drive Protrusion 50 Second Intermediate Gear 50a Driven Protrusion
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.5 識別記号 庁内整理番号 ＦＩ 技術表示箇所 Ｇ０３Ｇ 15/00 １０９ 7369−2Ｈ ─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. 5 Identification code Office reference number FI technical display location G03G 15/00 109 7369-2H
Claims (3)
差しガイドと、 その手差しガイドで手差しロ−ラ軸を中心として回転自
在に支持するとともに、前記従動ロ−ラからの回転は伝
達されるが、その従動ロ−ラへは回転を伝達しない手差
しロ−ラと、 前記手差しガイドをバネ付勢してその手差しロ−ラが押
し当てられ、前記手差しガイドとの間で手差しシ−トを
案内する搬送ガイドと、 で構成してなる、手差し給紙装置。1. A drive roller, a driven roller that is pressed against the drive roller, a manual feed guide that swings about a driven roller shaft of the driven roll, and a manual feed guide. The manual feed roller is rotatably supported about a manual feed roller shaft, and the rotation from the driven roller is transmitted, but the rotation is not transmitted to the driven roller, and the manual feed guide is provided. A manual paper feeding device, comprising: a conveyance guide, which is biased by a spring and pressed against the manual paper feeding roller, and guides the manual paper feeding sheet to and from the manual paper feeding guide.
挿入したシ−トを突き当てるストッパと、そのストッパ
を退避位置へと移動して前記シ−トの突き当てを解除す
るソレノイドとを備えてなる、請求項１に記載の手差し
給紙装置。2. A stopper for abutting a sheet inserted between the manual feed roller and the conveyance guide, and a solenoid for moving the stopper to a retracted position to release the abutment of the sheet. The manual sheet feeder according to claim 1, which is provided.
歯車と、 その従動ロ−ラ歯車と噛み合い、側面に駆動突起を有す
る第一中間歯車と、 その第一中間歯車を回転自在に支持する中間車軸と、 前記手差しロ−ラ軸に固定する手差しロ−ラ歯車と、 その手差しロ−ラ歯車と噛み合い、側面に前記駆動突起
と回転に伴い係合する従動突起を有し、前記中間車軸上
で回転自在に支持する第二中間歯車とを備え、 前記手差しロ−ラが前記従動ロ−ラからの回転は伝達さ
れるが、その従動ロ−ラへは回転を伝達しない構成とし
てなる、請求項１に記載の手差し給紙装置。3. A driven roller gear fixed to the driven roller shaft, a first intermediate gear meshing with the driven roller gear and having a drive projection on a side surface thereof, and the first intermediate gear being rotatable. An intermediate axle that is supported by, a manual-roller gear that is fixed to the manual-roller shaft, and a driven protrusion that meshes with the manual-roller gear and that engages the drive protrusion with rotation on the side surface, A second intermediate gear rotatably supported on the intermediate axle, wherein the manual feed roller transmits rotation from the driven roller but does not transmit rotation to the driven roller. The manual sheet feeder according to claim 1, wherein
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3276737A JPH0585647A (en) | 1991-09-27 | 1991-09-27 | Manual insertion paper feeder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3276737A JPH0585647A (en) | 1991-09-27 | 1991-09-27 | Manual insertion paper feeder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0585647A true JPH0585647A (en) | 1993-04-06 |
Family
ID=17573646
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3276737A Pending JPH0585647A (en) | 1991-09-27 | 1991-09-27 | Manual insertion paper feeder |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0585647A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010076895A (en) * | 2008-09-26 | 2010-04-08 | Brother Ind Ltd | Image forming apparatus |
| US9399359B2 (en) | 2014-11-04 | 2016-07-26 | Ricoh Company, Ltd. | Image forming apparatus including switching member |
| CN109203718A (en) * | 2017-07-07 | 2019-01-15 | Zih公司 | Media units redirector component for media processing device |
-
1991
- 1991-09-27 JP JP3276737A patent/JPH0585647A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010076895A (en) * | 2008-09-26 | 2010-04-08 | Brother Ind Ltd | Image forming apparatus |
| US9399359B2 (en) | 2014-11-04 | 2016-07-26 | Ricoh Company, Ltd. | Image forming apparatus including switching member |
| CN109203718A (en) * | 2017-07-07 | 2019-01-15 | Zih公司 | Media units redirector component for media processing device |
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