JPS6296230A - Paper feeder in image recording device - Google Patents
Paper feeder in image recording deviceInfo
- Publication number
- JPS6296230A JPS6296230A JP60236595A JP23659585A JPS6296230A JP S6296230 A JPS6296230 A JP S6296230A JP 60236595 A JP60236595 A JP 60236595A JP 23659585 A JP23659585 A JP 23659585A JP S6296230 A JPS6296230 A JP S6296230A
- Authority
- JP
- Japan
- Prior art keywords
- cam
- cassette case
- state
- check
- mounting plate
- 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
Links
Landscapes
- Paper Feeding For Electrophotography (AREA)
- Sheets, Magazines, And Separation Thereof (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、静電写真複写機やファクシミリ等の画像記録
装置における給紙装置、詳しくは、カセットケース内の
記録祇乗載仮を給紙手段側に向けて持上げ付勢する乗載
板持上具を、前記給紙手段側に持上げる第１状態とカセ
ットケースの挿抜を許容する第２状態とに揺動させるよ
うにした給紙装置に関するものである。[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a paper feeding device in an image recording device such as an electrostatic photocopier or a facsimile machine, and more specifically, to a paper feeding device for feeding a recording medium in a cassette case. The present invention relates to a paper feeding device in which a loading plate lifting tool that lifts and biases toward the paper feeding device is swung between a first state in which it is lifted toward the paper feeding device and a second state in which it allows insertion and removal of a cassette case. It is something.
上記乗載板持上具をカセットケースの挿抜に連動させて
前記第１状態と第２状態とに切換えさせる機構として、
例えば、特開昭６０−４８８４４号公報に示されるもの
や、あるいは、第２１図に示される構成のもの等が実施
されている。As a mechanism for switching the mounting plate lifting tool between the first state and the second state in conjunction with insertion and removal of the cassette case,
For example, the structure shown in Japanese Unexamined Patent Publication No. 60-48844 or the structure shown in FIG. 21 has been implemented.
このものは、第１状ＧＸと第２状態Ｙとに揺動切換え自
在の乗載板持上具５を装置本体側に設けると共に、該乗
載板持上具５を揺動操作するためのカムフォロワ９を当
該持上具５に連設する一方、前記カセットケース１の挿
抜に伴う前記カムフォロワ９との相対当接によって前記
乗載板持上具５を前記第１状態Ｘと第２状態Ｙとに切換
える状態切換えカムＣ１を前記カセットケース１に設け
たものであって、カセットケース底板と乗載板との間に
スプリングを介装すると共に、記録紙の浮上がり防止爪
を設けるカセットケースを用いる場合に比べて、スプリ
ングや爪が無いことから記録紙補充の取り扱いが容易で
あり、その上、カセットケース１の挿抜に連動して乗載
板持上具５が所定の状態χ、Ｙに切換えられるもので、
操作性の面で優れるものである。This device is provided with a mounting board lifting tool 5 that can swing freely between a first state GX and a second state Y on the device main body side, and a cam follower 9 for swinging the mounting board lifting tool 5. is connected to the lifting tool 5, and the board lifting tool 5 is switched between the first state X and the second state Y by relative contact with the cam follower 9 when the cassette case 1 is inserted and removed. When using a cassette case in which the state switching cam C1 is provided in the cassette case 1, a spring is interposed between the cassette case bottom plate and the mounting plate, and a claw is provided to prevent the recording paper from rising. In comparison, since there are no springs or claws, it is easier to replenish the recording paper, and in addition, the loading plate lifting tool 5 can be switched to the predetermined states χ and Y in conjunction with the insertion and removal of the cassette case 1. ,
It is excellent in terms of operability.
ところで、カセットケース１の挿入時における前記乗載
板持上具５の前記第２状ＦｂｉＹから第１状ａＸへの切
換わりに際して、当該乗載板持上具５は状態切換えカム
Ｃｚに追従して被動されるカムフォロワ９の動きに連動
して順次的に第１状ＧＸに移行されるものであり、従っ
て、カムフォロワ９が状態切換えカムに追従して被動さ
れ始めると、これに伴って乗載板持上具５も第１状ＤＸ
に移行し始めるもので、カセットケース１に収容されて
いる記録紙ａの最上位部のものの前端が給紙手段７の給
紙作用位置Ｔに到達する前に、当該最上位部の記録紙ａ
の前端が前記給紙作用位置Ｔよりも上方に持上げられて
しまうことがあり、特に記録紙ａの収容量が多いときに
顕著であり、このため、カセットケース１の挿入に伴っ
て記録紙ａが給紙手段７に当接して、記録紙ａの前端が
押しつぶされたり、収容記録紙ａの前端が不揃いになっ
たりし、記録不良や紙詰まりの原因になることが多々あ
ったのである。By the way, when the mounting plate lifting tool 5 is switched from the second state FbiY to the first state aX when inserting the cassette case 1, the mounting board lifting tool 5 is driven by following the state switching cam Cz. Therefore, when the cam follower 9 starts to be driven following the state switching cam, the mounting plate is lifted accordingly. Tool 5 is also in the first state DX
Before the front end of the uppermost recording paper a stored in the cassette case 1 reaches the paper feeding action position T of the paper feeding means 7, the uppermost recording paper a
The front end of the cassette case 1 may be lifted above the paper feeding position T, which is particularly noticeable when there is a large amount of recording paper a stored therein. When the recording paper a comes into contact with the paper feeding means 7, the front edge of the recording paper a is crushed or the front edge of the stored recording paper a becomes uneven, which often causes recording defects and paper jams.
本発明は、上記の実情に鑑みて案出されたものであって
、カセットケースの挿抜に連動して自動的に前記乗載板
持上具を所定の状態に切換えさせる構成そのものを生か
しながら、簡単な改良によって上記欠点を解消せんこと
を目的としている。The present invention has been devised in view of the above-mentioned circumstances, and utilizes the structure itself in which the loading plate lifting device is automatically switched to a predetermined state in conjunction with the insertion and removal of the cassette case, and is simple. The aim is to eliminate the above drawbacks through further improvements.
上記目的を達成するために本発明は、カセットケース内
の記録紙乗載板を給紙手段側に向けて持上げ付勢する乗
載板持上具を、前記給紙手段側に持上げる第１状態とカ
セットケースの挿抜を許容する第２状態とに揺動切換え
自在に装置本体側に設けると共に、咳乗載板持上具を揺
動操作するためのカムフォロワを当該持上具に連設する
一方、前記カセットケースの挿抜に伴う前記カムフォロ
ワとの相対当接によって前記乗載板持上具を第１状態と
第２状態とに切換える状態切換えカムを前記カセ−／
ｌ・ケースに設けた画像記録装置における給紙装置にお
いて、前記カセットケースの挿入時においてカムフォロ
ワの前記状態切換えカム側への移行を牽制する機構を設
けると共に、前記カセットケース内の最上位部の記録紙
前端が前記給紙手段の給紙作用位置に到達し且つカセッ
トケース装填部−ヘー）カセットケースの装填完了まで
の間において、前記牽制機構によるカムフォロワの前記
状態切換えカム側への移行牽制を解除させるように構成
した点に特徴がある。In order to achieve the above object, the present invention provides a first state in which a mounting plate lifting tool for lifting and biasing a recording paper mounting plate in a cassette case toward the paper feeding means side is lifted toward the paper feeding means side. and a second state that allows the insertion and removal of the cassette case, and a cam follower for swinging the cough mounting plate lifting tool is connected to the lifting tool; A state switching cam that switches the mounting plate lifting tool between a first state and a second state by relative contact with the cam follower when the cassette case is inserted or removed is connected to the cassette/cassette case.
l. In the paper feeding device of the image recording device provided in the case, a mechanism is provided to check the movement of the cam follower to the state switching cam side when the cassette case is inserted, and a mechanism is provided to prevent the cam follower from shifting to the state switching cam side when the cassette case is inserted, and the recording of the uppermost part in the cassette case is provided. Until the front end of the paper reaches the paper feeding action position of the paper feeding means and the loading of the cassette case is completed at the cassette case loading section, the check mechanism releases the check on the cam follower from shifting to the state switching cam side. It is distinctive in that it is configured to allow
以下、本発明の実施例を図面に基づいて説明すると、第
１図は画像記録装置における給紙装置を示し、第２図は
その分解図を示すものであって、図において、１はカセ
ットケース装填部２に対して挿抜自在のカセットケース
で、合成樹脂製の箱状ケース本体３の内部に、ケース挿
入方向上流側を支点にして上下方向に揺動自在の記録紙
乗載板４が設けられている。Hereinafter, embodiments of the present invention will be described based on the drawings. Fig. 1 shows a paper feeding device in an image recording device, and Fig. 2 shows an exploded view thereof. In the figure, 1 indicates a cassette case. This is a cassette case that can be inserted into and removed from the loading section 2, and a recording paper mounting plate 4 that can swing vertically with the upstream side of the case insertion direction as a fulcrum is provided inside a box-shaped case body 3 made of synthetic resin. It is being
５はカセットケース挿抜方向（第１図において左右方向
）に直交する方向（紙面において鉛直方向）の水平の横
軸６まわりで揺動自在の乗載板持上具で、前記ケース本
体３の底板３ａに形成した開口Ｂを通して前記記録紙乗
載板４を給紙手段（ローラを示すが、ベルト構成のもの
等に変更可能である。）７側に持上げる第１状態Ｘと、
前記カセットケース１の挿抜を許容する第２状ＭＹとに
、夫々揺動切損え自在に装置本体側に設けられ、かつ、
前記横軸６の端部に連設のアーム１７と装置本体側の部
材すとにわたって、該乗載板持上具５を第１状Ｂｘ側に
付勢する一例がスプリングの付勢手段１２を設けである
。Reference numeral 5 denotes a mounting plate lifting tool that is swingable around a horizontal horizontal axis 6 in a direction (vertical direction in the paper) perpendicular to the cassette case insertion/extraction direction (left-right direction in FIG. A first state
A second shape MY that allows the insertion and removal of the cassette case 1 is provided on the apparatus main body side so as to be able to swing freely and cut, and
One example of biasing the mounting plate lifting tool 5 toward the first shape Bx is to provide a spring biasing means 12 across the arm 17 connected to the end of the horizontal shaft 6 and the member on the apparatus main body side. It is.
９．９は前記横軸６の両端に連設されたカムフォロワで
、前記横軸６に固着のアーム１０と、該アーム１０の遊
端に枢着のローラ１１とから成る。A cam follower 9.9 is connected to both ends of the horizontal shaft 6, and is composed of an arm 10 fixed to the horizontal shaft 6 and a roller 11 pivotally attached to the free end of the arm 10.
１３、１３は前記ケース本体３の左右の側板３ｂ、 ３
ｂに一体連設されたカム部材で、カセットケース１の挿
入操作時（第１図にカセットケース挿入方向を矢符Ｅで
示す。）に前記カムフォロワ９のローラ１１に相対当接
して前記乗載板持上具５を第２状態Ｙに切換える第１カ
ムＣ１と、カセットケース１の抜出し時に前記ローラ１
１に相対当接して乗載板持上具５を第２状ＭＹに切換え
る第２カムＣｔ、及び、前記乗載板持上具５の第２状態
Ｙを維持する第３カムＣ１が形成されている。13, 13 are left and right side plates 3b, 3 of the case body 3;
When the cassette case 1 is inserted into the cassette case 1 (the direction of insertion of the cassette case is indicated by arrow E in FIG. 1), the cam member is integrally connected to the cam member b, and when the cassette case 1 is inserted (in FIG. A first cam C1 that switches the plate holding tool 5 to the second state Y, and a first cam C1 that switches the plate holding tool 5 to the second state Y, and a
1, and a third cam C1 that maintains the second state Y of the board lifting tool 5 is formed. .
１４は前記カセットケース１の挿入時において前記カム
フォロワ９のローラ１１が前記第３カムＣ１から第２カ
ムＣ２に移行することを牽制する牽制部材で、前記第３
カムＣ５に凹入部１５を形成すると共に、咳凹入部１５
に対してそれの前記第２カムＣ２側に、カセットケース
挿抜方向に直交する方向の水平横軸１６を介して該牽制
部材１４を枢着し、もって第３図に示すように、自重垂
下の状態（仮想線図示する。）にある前記牽制部材１４
を、カセットケース挿入時における前記ローラ１１との
相対当接によって第２カムＣ２側に回動させる（反時計
方向に回動させる）ようにすると共に、該牽制部材１４
の下面が前記第３カムＣ１のカム面と路面−になる牽制
作用状ＬｉＤにおいて、それ以上に牽制部材１４が回動
することを凹入部上面Ｓで阻止させるようにしである。Reference numeral 14 denotes a restraining member that restrains the roller 11 of the cam follower 9 from shifting from the third cam C1 to the second cam C2 when the cassette case 1 is inserted;
A recessed part 15 is formed in the cam C5, and a cough recessed part 15 is formed in the cam C5.
The check member 14 is pivotally attached to the second cam C2 side of the second cam C2 via a horizontal horizontal shaft 16 extending perpendicularly to the direction of insertion and removal of the cassette case, thereby preventing the drooping of its own weight, as shown in FIG. The check member 14 in the state (shown in phantom line)
is rotated toward the second cam C2 (rotated counterclockwise) by relative contact with the roller 11 when inserting the cassette case, and the restraining member 14
In the restraining member LiD whose lower surface is opposite to the cam surface of the third cam C1 and the road surface, the upper surface S of the recessed portion prevents the restraining member 14 from rotating any further.
而して、第４図に示すように、当該牽制部材１４に対す
る前記ローラ１１の当接が解除された時点で始めて該ロ
ーラ１１が第２カムＣ２側に移行し、これに伴って前記
乗載板持上具５が第３図に示す第２状態Ｙから乗載板持
上げの第１状ｕＸに移行すると共に、前記牽制部材１４
が時計方向に回動し、初期の自重垂下の状態に戻ること
になる。As shown in FIG. 4, the roller 11 moves to the second cam C2 side only when the roller 11 is released from contact with the restraining member 14, and as a result, the mounting As the board lifting tool 5 moves from the second state Y shown in FIG. 3 to the first state uX for lifting the board, the restraining member 14
rotates clockwise, returning to the initial state of hanging under its own weight.
さて、前記牽制部材１４によるカムフォロワ９の第２カ
ム０２側への移行牽制の解除タイミングであるが、これ
は、前記カセットケースｌ内の最上位部の記録紙ａの前
端が前記給紙手段７による給紙作用位置Ｔに到達し且つ
カセットケース装填部２へのカセットケースの装填完了
までの間に牽制解除が行われるように設定するものであ
り、これによって、前記カセットケースｌの挿入時に該
カセットケース１内の記録紙ａの前端が給紙手段７に当
接する事態を確実に無くすことができ、延いては、記録
紙ａの前端の押しつぶれによる記録不良や紙詰まりのト
ラブルを効果的に回避できる。Now, the timing for releasing the restraint on the movement of the cam follower 9 toward the second cam 02 by the restraining member 14 is that the front end of the uppermost recording paper a in the cassette case l is The check is set so that the check is released before the sheet feeding action position T is reached and the loading of the cassette case into the cassette case loading section 2 is completed. It is possible to reliably eliminate the situation where the front end of the recording paper a in the cassette case 1 comes into contact with the paper feeding means 7, which in turn effectively prevents troubles such as poor recording and paper jams caused by the crushing of the front end of the recording paper a. can be avoided.
そして第５図に示すように、前記カセットケース１を抜
出す（抜出し方向を第１図に矢符Ｆで示す。）と、その
抜出しに伴ってローラ１１に相対当接する前記第２カム
Ｃ２の作用で、前記第１状ＢＸにある乗載板持上具５が
順次第２状ＢＹ側に切換えらると共に、更なるカセット
ケース１の抜出しによって前記ローラ１１が相対的に前
記牽制部材１４を凹入部１５内に押し込むもので、該牽
制部材１４に何らの影響を受けることなく、前記カセッ
トケース１に当接するカムフォロワ９のローラ１１が前
記乗載板持上具５の第１状６ｘを維持することになる。As shown in FIG. 5, when the cassette case 1 is extracted (the direction of extraction is indicated by an arrow F in FIG. 1), the second cam C2 comes into relative contact with the roller 11. As a result, the board lifting tool 5 in the first state BX is sequentially switched to the second state BY side, and as the cassette case 1 is further removed, the roller 11 relatively dents the restraining member 14. The roller 11 of the cam follower 9 that comes into contact with the cassette case 1 maintains the first shape 6x of the mounting plate lifting tool 5 without being influenced by the restraining member 14 by being pushed into the entrance part 15. become.
即ち、前記第２カムＣ２は、カセットケース１の挿入時
における前記カムフォロワローラ１１との相対当接によ
って前記乗載板持上具５を第１状６ｘに切換える機能を
有し、かつ、カセットケース１の抜出し時には前記乗載
板持上具５を第２状態Ｙに切換える機能を有するもので
、当該第２カムＣ２は乗載板持上具５の状態切換え用の
カムである。That is, the second cam C2 has a function of switching the mounting plate lifting tool 5 to the first state 6x by relative contact with the cam follower roller 11 when the cassette case 1 is inserted, and The second cam C2 is a cam for switching the state of the board lifting tool 5 when the mounting board lifting tool 5 is removed.
そして、前記牽制部材１４とこれの回動を阻止する凹入
部上面Ｓとによって、カセットケース１の挿入時におい
て少なくとも前記最上位部の記録紙前端が前記給紙作用
位置Ｔに到達するまでの間、前記カムフォロワ９のロー
ラ１１が上記状態切換え用の第２カムＣ２側に移行する
ことを牽制する牽制機構Ａを構成しているのである。The restraining member 14 and the recessed upper surface S that prevents rotation thereof are used at least until the front end of the uppermost recording paper reaches the paper feeding position T when the cassette case 1 is inserted. , constitutes a restraining mechanism A that restrains the roller 11 of the cam follower 9 from moving toward the second cam C2 for state switching.
尚、前記カムフォロワ９のローラ１１は、咳ローラ１１
が凹入部１５の形成部位に移行した状態において、ロー
ラＩＸの一部が第３カムＣ３に当接するように構成して
あって、該ローラ１１が凹入部１５に落ち込むことによ
る乗載板持上具５の不安定な動きを生しさせないように
しである。Note that the roller 11 of the cam follower 9 is a cough roller 11.
When the roller IX moves to the formation site of the recessed part 15, a part of the roller IX is configured to abut the third cam C3. This is to prevent unstable movement of 5.
〔第１別実施例〕
第６図に牽制機構へにおける牽制部材１４の第１別実施
例を示す。このものは、自由状態において牽制部材１４
を牽制作用状態りに維持するように、該牽制部材１４の
枢支軸部にツル巻きスプリング等の付勢具１８を設け、
該牽制部材１４を反時計方向に付勢すると共に、該牽制
作用状１１Ｄにおける遊端上方を傾斜面１４ａに面取り
加工したもので、カセットケースｌの抜出し時のローラ
１１による牽制部材１４の回動開始をスムースに行わせ
られると共に、カセットケース１の抜出し状態において
牽制部材１４をケース底板３ａの下面から突出させない
ようにして、該カセットケース１の格納に際して牽制部
材１４が邪魔にならないようにした点に特徴がある。[First Alternative Embodiment] Fig. 6 shows a first alternative embodiment of the check member 14 in the check mechanism. This thing has a check member 14 in a free state.
A biasing device 18 such as a helical spring is provided on the pivot shaft of the restraining member 14 so as to maintain the restraining member 14 in the restraining state.
The check member 14 is biased in the counterclockwise direction, and the upper free end of the check member 11D is chamfered to form an inclined surface 14a, which prevents rotation of the check member 14 by the roller 11 when the cassette case l is extracted. The start can be performed smoothly, and the check member 14 is prevented from protruding from the lower surface of the case bottom plate 3a when the cassette case 1 is extracted, so that the check member 14 does not get in the way when the cassette case 1 is stored. There are characteristics.
〔第２別実施例〕
第７図に牽制機構へにおける牽制部材１４の第２別実施
例を示す。このものは、牽制部材１４を扇形状（三角形
状やＬ字状等であっても良い。）にして、当該牽制部材
１４の上方部をケース側板３ｂの上部に横軸１６で枢着
すると共に、第３カムＣ１のカム面と牽制部材１４の牽
制作用面Ｓｌとが面一になる状態を、自重力によるケー
ス側板部分Ｓｔとの当接によって自己保持させるように
したもので、当８亥ケース側板部分Ｓ！と牽制部材１４
とによって牽制機構Ａを構成してあり、かかる構成のも
のも、上記第１別実施例のものと同様に、牽制部材１４
をケース底板３ａの下面から突出させないようにした点
に特徴がある。[Second Alternative Embodiment] Fig. 7 shows a second alternative embodiment of the check member 14 in the check mechanism. In this case, the check member 14 is formed into a fan shape (triangular shape, L-shape, etc.), and the upper part of the check member 14 is pivotally connected to the upper part of the case side plate 3b by a horizontal shaft 16. , the state in which the cam surface of the third cam C1 and the restraining surface Sl of the restraining member 14 are flush with each other is self-maintained by contact with the case side plate portion St due to its own gravity. Case side plate part S! and check member 14
The check mechanism A is configured by the check member 14, and the check mechanism A with this structure also includes the check member 14 as in the first alternative embodiment.
It is distinctive in that it does not protrude from the lower surface of the case bottom plate 3a.
〔第３別実施例〕
第８図乃至第１３図に乗載板持上具５の状態切換え機構
の別実施例を示す。かかる構成においては、カムフォロ
ワ９とカム部材１３の構成が次の点で異なるものである
。[Third Alternative Embodiment] Figs. 8 to 13 show another embodiment of the state switching mechanism of the mounting plate lifting tool 5. In this configuration, the configurations of the cam follower 9 and the cam member 13 differ in the following points.
即ち、前記カムフォロワ９は、横軸６に対して軸芯方向
にのみ所定量だけスライド自在にボス部材２５を設ける
と共に、当該ボス部材２５に対して半径方向に延びるア
ーム１０を固着し、かつ、該アーム１０の遊端にローラ
１１を枢着すると共に、前記ボス部材２５を横軸６の端
部に向けて付勢する一例がコイルスプリングの付勢手段
１日を、前記横軸６に付設の受座１９と前記ボス部材２
５との間に介在させて成る。That is, the cam follower 9 is provided with a boss member 25 that is slidable by a predetermined amount only in the axial direction with respect to the horizontal shaft 6, and has an arm 10 that extends in the radial direction fixed to the boss member 25, and One example of pivoting the roller 11 to the free end of the arm 10 and urging the boss member 25 toward the end of the horizontal shaft 6 is to attach a coil spring biasing means to the horizontal shaft 6. catch seat 19 and the boss member 2
5.
一方、前記カム部材１３は、カセットケース１の挿入操
作時に前記カムフォロワ９のローラ１１に相対当接して
前記乗載板持上具５を第２状ＢＹに切換える第１カムＣ
Ｉと、該第１カムＣ１に連なって前記乗載板持上具５の
第２状ＧＹを保持する第３カムＣ３と、カセットケース
１の抜出し時に前記ローラ１１に相対当接して乗載板持
上具５を第２状ＢＹに切換える第２カムＣ２、及び、前
記付勢手段１２による付勢力を基にして前記ローラ１１
を第３カムＣ１側から第２カム０２側に移行させる第４
カムＣ６と、前記第２カムＣ２に連なって前記乗載板持
上具５の第２状Ｂｙを維持する平滑カムＣ１を形成して
成る。On the other hand, the cam member 13 has a first cam C that comes into relative contact with the roller 11 of the cam follower 9 and switches the mounting plate lifting tool 5 to the second state BY when the cassette case 1 is inserted.
I, a third cam C3 connected to the first cam C1 and holding the second shape GY of the mounting plate lifting tool 5, and a third cam C3 that is connected to the first cam C1 and holds the second shape GY of the mounting plate lifting tool 5, and a third cam C3 that relatively contacts the roller 11 and lifts the mounting plate when the cassette case 1 is extracted. A second cam C2 that switches the tool 5 to the second state BY, and the roller 11 based on the urging force of the urging means 12.
The fourth cam C1 side moves from the third cam C1 side to the second cam 02 side.
A cam C6 and a smooth cam C1 that is continuous with the second cam C2 and maintains the second shape By of the board lifting tool 5 are formed.
詳しくは、前記第１及び第３カムＣＩ＋ ｃ３に対して
前記第２カムＣ２と平滑カムＣ６とをケース側板３ｂ側
（カセットケース１の内側）に位置させる状態で、これ
らのカムＣ，，Ｃ３、Ｃｚ、 Ｃｓを前記乗載板持上具
５の揺動軸芯方向で位置を異ならせて形成して、前記カ
セットケースｌの挿入時の第３カムｃ３におけるカムフ
ォロワ９のローラ１１の相対移動終端ｐを、カセットケ
ース１の抜出し時の第２カムＣ２におけるカムフォロワ
９の相対移動路＠ｑよりもカセットケース１の挿入方向
上流側（第９図において右側）に位置させるようにしで
ある。Specifically, in a state where the second cam C2 and the smooth cam C6 are located on the case side plate 3b side (inside the cassette case 1) with respect to the first and third cams CI+c3, these cams C, C3 . p is positioned upstream in the insertion direction of the cassette case 1 (on the right side in FIG. 9) from the relative movement path @q of the cam follower 9 in the second cam C2 when the cassette case 1 is extracted.
そして、前記カムフォロワ９のローラ１１が前記相対移
動終端ｐを通過した時点で、前記乗載板持上具５を持上
げる付勢手段１２を基にして且つ前記付勢機構１８に抗
して、前記カムフォロワ９のローラ１１を第３カム０３
側から第２カムＣ２側に移行させるように第４カムＣ４
を形成すると共に、前記カセットケース１抜出し時に相
対的に第２カムＣ２及び平滑カムＣ３に案内されるロー
ラ１１が付勢手段１８によって第３及び第１カムＣ，、
Ｃ，側に移行されることを防止すべく、前記平滑カムＣ
３の側部に隆状部ｄを形成しである。Then, when the roller 11 of the cam follower 9 passes the relative movement end point p, based on the biasing means 12 for lifting the mounting plate lifting tool 5 and against the biasing mechanism 18, the The roller 11 of the cam follower 9 is connected to the third cam 03
the fourth cam C4 so as to move from the side to the second cam C2 side.
At the same time, when the cassette case 1 is extracted, the roller 11 that is relatively guided by the second cam C2 and the smooth cam C3 is moved by the biasing means 18 to the third and first cams C, .
In order to prevent the smooth cam C from being moved to the C side,
A raised portion d is formed on the side of the portion 3.
前記カセットケース１の挿入時の第３カムＣ１における
ローラ１１の相対移動終端ｐは、前記カセットケース１
内の最上位部の記録紙ａの前端が前記給紙手段７による
給紙作用位置Ｔに到達し且つカセットケース装填部２へ
のカセットケースの装填完了までの範囲内で、前記ロー
ラ１１が第４カムＣ４に案内されるように設定されるも
のであり、即ち上記範囲では、前記ローラ１１が状態切
換え用の第２カムＣ２側に移行されないように、第３カ
ムＣ３と付勢手段１８とによって牽制機構Ａを構成して
いるのである。The relative movement end point p of the roller 11 in the third cam C1 when the cassette case 1 is inserted is
Within the range from when the front end of the uppermost recording paper a reaches the paper feeding action position T by the paper feeding means 7 and until the loading of the cassette case into the cassette case loading section 2 is completed, the roller 11 is In other words, in the above range, the third cam C3 and the urging means 18 are set so as to be guided by the fourth cam C4, so that the roller 11 is not moved toward the second cam C2 for state switching. This constitutes the check mechanism A.
而して、第１１図及び第１２図に示すように、カセット
ケース１の挿入に伴って前記ローラ１１が第１カ五〇、
によって押し下げられて、それまで無負荷の第１状Ｂｘ
にある乗載板持上具５が順次的に第２状ｇＹに切換えら
れると共に、続いて平滑の第３カムＣ１によって第２状
ＢＹが保持され、そして前記最上位部の記録紙ａの先端
が給紙作用位置Ｔを通過して後に、前記乗載板持上具５
が第４カムＣ４によって一挙に第１状態Ｘ側へと移行さ
れ、収容記録紙ａが給紙手段７に押圧されるようになっ
ているもので、これによって、前３己カセツトケース１
の挿入時に該カセットケース１内の前端が給紙手段７に
当接する事態を確実に無くすことができる。As shown in FIGS. 11 and 12, as the cassette case 1 is inserted, the roller 11 moves to the first position,
The previously unloaded first state Bx is pushed down by
The board lifting tool 5 located at After passing through the paper feeding action position T, the mounting plate lifting tool 5
is shifted all at once to the first state
It is possible to reliably prevent the front end of the cassette case 1 from coming into contact with the sheet feeding means 7 when the cassette case 1 is inserted.
そして、第１３図に示すように、前記ローラ１１が第２
カムＣ２側に移行したカセットケース装填後において該
前記カセットケース１を抜出すと、その抜出しに伴って
ローラ１１に相対当接する前記第２カムＣ２の作用で、
前記第１状態Ｘにある乗載板持上具５が順次第２状ｔｃ
、Ｙ側に切換えられると共に、前記ローラ１１が前記相
対移動終端ｑを過ぎて平滑の第５カムＣ２部分に到達し
た時点で乗載板持上具５が完全に第２状態Ｙに切換えら
れ、かつ、続くカセットケース１の抜出しによって前記
ローラ１２がカムＣ１から外れると、それまで第２状Ｈ
Ｙに保持されていた乗載板持上具５が第１状態Ｘ（ただ
し、カセットケース１が存在しないので、実質的に乗載
板持上具５を持上げ付勢するだけの状態である。）に切
換えられるようになっている。Then, as shown in FIG. 13, the roller 11 is moved to the second
When the cassette case 1 is pulled out after loading the cassette case that has moved to the cam C2 side, the second cam C2 comes into relative contact with the roller 11 as the cassette case 1 is pulled out.
The board lifting tool 5 in the first state X gradually changes to the second state tc.
, at the same time as the roller 11 passes the relative movement end q and reaches the smooth fifth cam C2 portion, the mounting plate lifting tool 5 is completely switched to the second state Y, and , When the roller 12 comes off the cam C1 due to the subsequent extraction of the cassette case 1, the second state H remains until then.
The mounting board lifting tool 5 held at Y is in the first state It is possible to switch.
尚、第１カムＣＩに連ねて平滑の第３カムＣ１を連設し
て、カムフォロワ９が相対移動終端ｐに達するまでの間
に該平滑の第３カムＣｔによって乗載板持上具５を第２
状Ｂｙに保持させるようにしたが、該平滑の第３カムＣ
１を省略して、傾斜カム部分のみによって第１カムＣ１
を構成するも良い。A third smooth cam C1 is provided in series with the first cam CI, and the third smooth cam Ct moves the mounting plate lifting tool 5 to the third cam C1 until the cam follower 9 reaches the end p of relative movement. 2
The smooth third cam C
1 is omitted and the first cam C1 is formed by only the inclined cam portion.
It is also good to configure.
〔第４別実施例〕
第１４図に牽制機構Ａにおけるカムフォロワ９の別実施
例を示す。このものは、横軸６に直交する軸２０を介し
てカムフォロワ９のアーム１０をボス部材２５に枢着し
て、該アーム１０を横軸６の軸芯方向に揺動自在に構成
すると共に、該アーム遊端のローラ１１を第２カムＣ２
側から第１カムＣ１側（紙面において軸２０まわりで時
計方向側）に移行さ廿る付勢手段１８を揺動軸部に設け
たものである。[Fourth Other Embodiment] FIG. 14 shows another embodiment of the cam follower 9 in the check mechanism A. In this device, an arm 10 of a cam follower 9 is pivotally connected to a boss member 25 via a shaft 20 perpendicular to the horizontal shaft 6, and the arm 10 is configured to be swingable in the axial direction of the horizontal shaft 6. The roller 11 at the free end of the arm is moved by the second cam C2.
A biasing means 18 that moves from the side to the first cam C1 side (clockwise around the shaft 20 in the paper) is provided on the swing shaft.
〔第５別実施例〕
第１５図乃至第２０図に乗載板持上具５の状態切換え機
構の別実施例を示す、このものは、カセットケース装填
部２に対してカセットケース１を所定通りにセットする
までの間、前記カセットケースｌの抜出し状態を含めて
、乗載板持上具５を第２状ＭＹに保持させる点に特徴が
ある。[Fifth Alternative Embodiment] Figs. 15 to 20 show another embodiment of the state switching mechanism of the mounting plate lifting tool 5. The cassette case 1 is characterized in that the mounting plate lifting tool 5 is held in the second state MY until the cassette case 1 is set.
即ち、一方のカムフォロワ９に隣接させる状態で牽制ア
ーム２１を横軸６に固着すると共に、該牽制アーム２１
の先端に上方から係合して乗載板持上具５を第２状態Ｙ
に保持する牽制フック２２を、前記横軸６に平行なる軸
２３まわりで１２動自在にカセットケース装填部２に枢
着し、かつ、咳牽制フック２２を係合方向（時計方向）
に付勢する一例がスプリングの付勢手段２４をフック装
着部に設ける一方、カセットケース１の挿脱に伴ってカ
ムフォロワ９のローラ１１に相対当接して前記乗載板持
上具５を第１状態Ｘと第２状態Ｙとに切換える状態切換
え用のカムＣ２と、前記乗載板持上具５の第２状ＢＹを
保持する平滑カムＣ６とを、前記カセットケース１に連
設のカム部材１３に形成すると共に、前記カセットケー
ス１の挿入時に前記牽制アーム２１に対する牽制フック
２２の係合を解除する保合解除部Ｃを、一方のカム部材
１３に設けたものである。That is, the check arm 21 is fixed to the horizontal shaft 6 in a state adjacent to one of the cam followers 9, and the check arm 21
from above to move the board lifting tool 5 into the second state Y.
The cough restraint hook 22 is pivoted to the cassette case loading section 2 so as to be movable around an axis 23 parallel to the horizontal axis 6, and the cough restraint hook 22 is moved in the engaging direction (clockwise).
In one example, a spring biasing means 24 is provided in the hook attachment part, and when the cassette case 1 is inserted or removed, it comes into relative contact with the roller 11 of the cam follower 9, and the mounting plate lifting tool 5 is brought into the first state. A state switching cam C2 for switching between X and a second state Y, and a smooth cam C6 for holding the second state BY of the mounting plate lifting tool 5 are connected to the cam member 13 connected to the cassette case 1. At the same time, one cam member 13 is provided with an engagement release portion C that releases the engagement of the restraining hook 22 with the restraining arm 21 when the cassette case 1 is inserted.
そして、カセットケース１内の最上位部の記録紙前端が
前記給紙手段７の給紙作用位置Ｔに到達し且つカセット
ケース装填部２へのカセットケース１の装填完了までの
間に、前記係合解除部Ｃが前記牽制フック２２の係合を
解除するように設定してあり、一方、第１７図に示すよ
うに、前記係合解除部Ｃが前記牽制フック２２の保合を
解除する以前において、前記両カムＣ２，Ｃ６の境界ｒ
がカムフォロワ９のローラ１１を通過するように、両カ
ムＣ２゜Ｃ６の形状を設定しである。Then, the front end of the uppermost recording paper in the cassette case 1 reaches the paper feeding action position T of the paper feeding means 7 and the loading of the cassette case 1 into the cassette case loading section 2 is completed. The engagement release portion C is set to release the engagement of the check hook 22, and on the other hand, as shown in FIG. 17, before the engagement release portion C releases the engagement of the check hook 22, , the boundary r between the two cams C2 and C6
The shapes of both cams C2 and C6 are set so that the cams pass through the roller 11 of the cam follower 9.
而して、前記係合解除部Ｃが牽制フック２２の係合を解
除するまでの間、前記牽制アーム２１と牽制フック２２
とによる牽制機構Ａが前記ローラ１１の前記状態切換え
カムＣ２側への移行を牽制して、前記乗ｉ３！板持上具
５の第２状ＢＹを保持すると共に、第１８図に示すよう
に、前記牽制が解除された時点でローラ１１が状態切換
えカム０２側に移行して、前記乗載板持上具５が一挙に
第１状態Ｘ側に切換えられる。Thus, until the engagement release portion C releases the engagement of the check hook 22, the check arm 21 and the check hook 22
The restraining mechanism A restrains the movement of the roller 11 to the state switching cam C2 side, and the riding i3! While holding the second state BY of the board lifting tool 5, as shown in FIG. are switched to the first state X side all at once.
そして、第１９図に示すように、カセットケース１の抜
出しに伴って前記ローラ１１が状態切換えカムＣ２に相
対当接し、これによるカムフォロワ９の回動に伴って乗
載板持上具５が順次第２状態Ｙ側に切換えられると共に
、更なるカセットケース１の抜出しによって、前記カム
フォロワ９の回動に同期する牽制アーム２１が、前記付
勢手段２４に抗して前記牽制フック２２を反係止方向（
反時計方向）に回動し、かつ、牽制アーム２１の先端部
２１ａが牽制フック２２の係止部２２ａを通過した時点
で、第２０図に示すように、当該牽制フック２２の係止
部２２ａが牽制アーム２１の先端部２１ａに再保合して
乗載板持上具５の第２状［Ｙが保持されるようになって
いる。As shown in FIG. 19, as the cassette case 1 is removed, the roller 11 comes into relative contact with the state switching cam C2, and as the cam follower 9 rotates, the mounting plate lifting tool 5 is sequentially moved. When the cassette case 1 is further removed, the check arm 21, which is synchronized with the rotation of the cam follower 9, moves the check hook 22 in the anti-locking direction against the biasing means 24. (
counterclockwise) and when the distal end 21a of the check arm 21 passes the locking part 22a of the check hook 22, as shown in FIG. is reattached to the distal end portion 21a of the check arm 21, so that the second state [Y] of the board lifting tool 5 is held.
尚、前記牽制フック２２に対する牽制アーム２１の再係
合がスムースに行われるように、牽制アーム２１の先端
下縁を湾曲カム面Ｓ、に形成し、更に、牽制アーム２１
ならびに牽制フック２２を滑りの良い合成樹脂材で作製
しである。In order to smoothly re-engage the check arm 21 with the check hook 22, the lower edge of the tip of the check arm 21 is formed into a curved cam surface S.
In addition, the check hook 22 is made of a synthetic resin material with good slippage.
以上説明したように本発明の画像記録装置における給紙
装置は、カセットケース挿入時においてカムフォロワが
前記状態切換えカム側に移行すること、即ち、乗載板持
上具が第１状態に切換わることを牽制する機構を設ける
と共！＝、前記カセットケース内の最上位部の記録紙前
端チく前記給紙手段の給紙作用位置に到達し且つカセッ
トケース装填部へのカセットケースの装填完了までの間
において、前記牽制機構によるカムフォロワの前記状態
切換えカムイリ１（への移行牽制を解除させるように構
成したので、カセットケースに収容の最上位部の記録紙
前端が給紙手段に当接する事態を確実に防止でき、延い
ては、記録紙前端の押しつぶれによる記録不良や紙詰ま
りのトラブルを効果的に回避できるに至、ったのである
。As explained above, the paper feeding device in the image recording apparatus of the present invention allows the cam follower to move to the state switching cam side when the cassette case is inserted, that is, the mounting plate lifting tool to switch to the first state. We will set up a mechanism to check it! =, the cam follower by the check mechanism is activated between the time when the front end of the recording paper at the uppermost part in the cassette case reaches the paper feeding action position of the paper feeding means and until the loading of the cassette case into the cassette case loading section is completed. Since the state switching Kamuyri 1 is configured to release the transition check, it is possible to reliably prevent the front end of the uppermost recording paper stored in the cassette case from coming into contact with the paper feeding means, and as a result, This makes it possible to effectively avoid problems such as poor recording and paper jams caused by the front edge of the recording paper being crushed.
図面は本発明の実施例を示し、第１図は画像記録装置に
おける給紙装置の断面図、第２図は給紙手段の分解斜視
図、第３図乃至第５図は乗載板持上具の状態切換え説明
図、第６図及び第７図は夫々カムフォロワの別実施例の
詳細図である。第８図は別実施例の給紙手段を示す分解
斜視図であり、第９図はその切換え機構のカム部材の詳
細図、第１０図はカムフォロワの詳細図、第１１図乃至
第１３図は乗載板持上具の状態切換え説明図であって、
第１４図はカムフォロワの別実施例を示す詳細図である
。第１５図は更に別実施例の給紙手段の断面図、第１６
図はその分解斜視図であり、第１７図乃至第２０図は乗
載板持上具の状態切換え説明図である。そして第２１図
は従来の乗載板持上具の状態切換え説明図である。
１・・・カセットケース、２・・・カセットケース装填
部、４・・・記録紙乗載板、５・・・乗載板持上具、７
・・・給紙手段、９・・・カムフォロワ、Ａ・・・牽制
機構、Ｔ・・・給紙作用位置、Ｘ・・・第１状態、Ｙ・
・・第２状態、Ｃｚ・・・状態切換えカム。The drawings show embodiments of the present invention; FIG. 1 is a sectional view of a paper feeding device in an image recording apparatus, FIG. 2 is an exploded perspective view of a paper feeding means, and FIGS. 3 to 5 are a mounting plate lifting tool. FIGS. 6 and 7 are detailed views of other embodiments of the cam follower. FIG. 8 is an exploded perspective view showing the paper feeding means of another embodiment, FIG. 9 is a detailed view of the cam member of the switching mechanism, FIG. 10 is a detailed view of the cam follower, and FIGS. 11 to 13 are It is an explanatory diagram of state switching of the board lifting tool,
FIG. 14 is a detailed diagram showing another embodiment of the cam follower. FIG. 15 is a cross-sectional view of a sheet feeding means according to another embodiment, and FIG.
The figure is an exploded perspective view thereof, and FIGS. 17 to 20 are explanatory diagrams for changing the state of the mounting board lifting tool. FIG. 21 is an explanatory diagram of state switching of the conventional board lifting device. DESCRIPTION OF SYMBOLS 1... Cassette case, 2... Cassette case loading part, 4... Recording paper mounting plate, 5... Mounting plate lifting tool, 7
... Paper feeding means, 9... Cam follower, A... Checking mechanism, T... Paper feeding action position, X... First state, Y...
...Second state, Cz...state switching cam.
Claims (1)
持上げ付勢する乗載板持上具を、前記給紙手段側に持上
げる第１状態とカセットケースの挿抜を許容する第２状
態とに揺動切換え自在に装置本体側に設けると共に、該
乗載板持上具を揺動操作するためのカムフォロワを当該
持上具に連設する一方、前記カセットケースの挿抜に伴
う前記カムフォロワとの相対当接によって前記乗載板持
上具を第１状態と第２状態とに切換える状態切換えカム
を前記カセットケースに設けた画像記録装置における給
紙装置であって、前記カセットケースの挿入時において
カムフォロワの前記状態切換えカム側への移行を牽制す
る機構を設けると共に、前記カセットケース内の最上位
部の記録紙前端が前記給紙手段の給紙作用位置に到達し
且つカセットケース装填部へのカセットケースの装填完
了までの間において、前記牽制機構によるカムフォロワ
の前記状態切換えカム側への移行牽制を解除させるよう
に構成してあることを特徴とする画像記録装置における
給紙装置。A first state in which the mounting plate lifting tool lifts and urges the recording paper mounting plate in the cassette case toward the paper feeding means side, and a second state in which it allows insertion and removal of the cassette case. A cam follower for swinging the loading plate lifting tool is provided on the main body side of the device so as to be able to freely switch the swing between the two. A paper feeding device for an image recording apparatus in which the cassette case is provided with a state switching cam that switches the mounting plate lifting tool between a first state and a second state by relative contact, and the cam follower is provided in the cassette case when the cassette case is inserted. A mechanism is provided to check the transition of the recording paper to the state switching cam side, and the front end of the uppermost recording paper in the cassette case reaches the paper feeding operation position of the paper feeding means and the cassette is inserted into the cassette case loading section. A sheet feeding device in an image recording apparatus, characterized in that the sheet feeding device in an image recording apparatus is configured to release the check mechanism from shifting the cam follower to the state switching cam side until the loading of the case is completed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60236595A JPH0764445B2 (en) | 1985-10-22 | 1985-10-22 | Paper feeding device in image recording device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60236595A JPH0764445B2 (en) | 1985-10-22 | 1985-10-22 | Paper feeding device in image recording device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6296230A true JPS6296230A (en) | 1987-05-02 |
| JPH0764445B2 JPH0764445B2 (en) | 1995-07-12 |
Family
ID=17002970
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60236595A Expired - Fee Related JPH0764445B2 (en) | 1985-10-22 | 1985-10-22 | Paper feeding device in image recording device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0764445B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02231324A (en) * | 1989-03-03 | 1990-09-13 | Fuji Xerox Co Ltd | Paper supply device for image forming device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57166236A (en) * | 1981-03-31 | 1982-10-13 | Matsushita Electric Ind Co Ltd | Mounting device of feed paper cassette for copying machine |
| JPS59133541U (en) * | 1983-02-25 | 1984-09-06 | ミノルタ株式会社 | Paper cassette attachment/detachment device |
| JPS6072427U (en) * | 1983-10-24 | 1985-05-22 | ミノルタ株式会社 | Cassette paper feeder |
| JPS6093048A (en) * | 1983-09-20 | 1985-05-24 | ジヤド，インコーポレイテツド | Paper charger for printer |
| JPS60132844A (en) * | 1983-12-19 | 1985-07-15 | Matsushita Electric Ind Co Ltd | Cassette-type sheet feeder |
-
1985
- 1985-10-22 JP JP60236595A patent/JPH0764445B2/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57166236A (en) * | 1981-03-31 | 1982-10-13 | Matsushita Electric Ind Co Ltd | Mounting device of feed paper cassette for copying machine |
| JPS59133541U (en) * | 1983-02-25 | 1984-09-06 | ミノルタ株式会社 | Paper cassette attachment/detachment device |
| JPS6093048A (en) * | 1983-09-20 | 1985-05-24 | ジヤド，インコーポレイテツド | Paper charger for printer |
| JPS6072427U (en) * | 1983-10-24 | 1985-05-22 | ミノルタ株式会社 | Cassette paper feeder |
| JPS60132844A (en) * | 1983-12-19 | 1985-07-15 | Matsushita Electric Ind Co Ltd | Cassette-type sheet feeder |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02231324A (en) * | 1989-03-03 | 1990-09-13 | Fuji Xerox Co Ltd | Paper supply device for image forming device |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0764445B2 (en) | 1995-07-12 |
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| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |