JPH0952636A - Paper feeding device for printer - Google Patents
Paper feeding device for printerInfo
- Publication number
- JPH0952636A JPH0952636A JP20970295A JP20970295A JPH0952636A JP H0952636 A JPH0952636 A JP H0952636A JP 20970295 A JP20970295 A JP 20970295A JP 20970295 A JP20970295 A JP 20970295A JP H0952636 A JPH0952636 A JP H0952636A
- Authority
- JP
- Japan
- Prior art keywords
- paper
- hopper
- feed roller
- paper feed
- sheet
- 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
- Handling Of Cut Paper (AREA)
- Sheets, Magazines, And Separation Thereof (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明はプリンタの給紙装置
に関し、特にホッパーに積載された用紙を給紙（ピッ
ク）ローラにより１枚ずつ安定して給紙できるようにし
たプリンタの給紙装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a paper feeding device for a printer, and more particularly to a paper feeding device for a printer that can stably feed paper stacked in a hopper one by one by a paper feeding (pick) roller. .
【０００２】[0002]
【従来の技術】プリンタのホッパー上に積載された多数
枚の記録用紙は、ホッパーの上部に設けられた給紙ロー
ラにより最上部の用紙から１枚ずつ給紙される。このと
き、２枚目以降の用紙が１枚目の用紙につれて前進する
のを防止するために、通常、給紙ローラに対向して分離
パッドが設けられ、２枚目の用紙が１枚目の用紙と共
に、給紙ローラと分離パッドとの間を進もうとする際に
分離パッドの摩擦力により２枚目の用紙がそれ以上進む
のを阻止される。最上部にある１枚目の用紙は２枚目の
用紙と分離されて引き続き給紙ローラによって送られ
る。2. Description of the Related Art A large number of recording sheets stacked on a hopper of a printer are fed one by one from the uppermost sheet by a sheet feeding roller provided on the upper part of the hopper. At this time, in order to prevent the second and subsequent sheets of paper from advancing along with the first sheet of paper, a separation pad is usually provided facing the sheet feed roller, and the second sheet of paper is the first sheet of paper. The frictional force of the separation pad prevents the second sheet from advancing further when the paper is trying to advance between the paper feed roller and the separation pad. The first sheet at the top is separated from the second sheet and is continuously fed by the sheet feed roller.
【０００３】１枚目の用紙が給紙ローラから送りローラ
に受け継がれ、印字部によって当該用紙についての印字
動作が行なわれる。印字動作が完了して、次の用紙につ
いて印字指令があると、給紙ローラが再度回転して、同
様の給紙作用を行う。このような動作を繰り返し所要枚
数の印紙が行われる。The first sheet of paper is passed from the paper feed roller to the feed roller, and the printing operation is performed on the paper by the printing unit. When the printing operation is completed and there is a print command for the next paper, the paper feed roller rotates again and the same paper feeding operation is performed. This operation is repeated to print the required number of sheets.
【０００４】[0004]
【発明が解決しようとする課題】このように、プリンタ
のホッパーに積載された多数枚の記録用紙は、最上部の
用紙から順次給紙ローラにより１枚ずつ給紙される。し
かしながら、最初の用紙が給紙ローラにより送られ印字
部へ向けて送られた時点から、給紙ローラによる次の用
紙の移動が開始されるまでの間、次の用紙は常時給紙ロ
ーラと分離パッドとの間に少し噛み込んでいる状態にあ
ることから、次の用紙について連続して印字動作が行わ
れる場合は問題ないが、一連の用紙についての作業が終
了した後、他のサイズの用紙に換える場合などにおい
て、ホッパーをプリンタから取り出す際において、給紙
ローラと分離パッドとの間に噛み込んでいる用紙を取り
出しにくいという問題がある。As described above, a large number of recording sheets stacked in the hopper of the printer are sequentially fed one by one from the uppermost sheet by the sheet feeding roller. However, from the time when the first paper is sent by the paper feed roller toward the printing unit until the next paper starts moving by the paper feed roller, the next paper is always separated from the paper feed roller. There is no problem when printing is continuously performed on the next paper because it is a bit bit between the pad and the pad, but after the work on a series of paper is completed, other size paper When the hopper is taken out from the printer, the problem is that it is difficult to take out the paper that is caught between the paper feed roller and the separation pad.
【０００５】そこで、本発明では、給紙ローラと分離パ
ッドとの間に噛み込んだ用紙を容易に取り出し得るよう
にし、用紙換え等を円滑に行い得るようにしたプリンタ
の給紙装置を提供することを目的とする。Therefore, the present invention provides a paper feeding device for a printer in which a paper caught between a paper feeding roller and a separation pad can be easily taken out so that the paper can be changed smoothly. The purpose is to
【０００６】[0006]
【課題を解決するための手段】請求項１によると、多数
枚の記録用紙を積載可能なホッパーと、該ホッパー上の
最上部の用紙の一部分に接触可能な給紙ローラと、該給
紙ローラに対向して設けられた分離パッドとを含み、給
紙ローラが正回転することにより前記用紙が給紙ローラ
と分離パッドとの間を通過して給紙されると共に、２枚
目以降の用紙が分離パッドにより拘束されるように構成
されたプリンタの給紙装置において、任意の用紙につい
ての印字動作の終了後一定時間経過後に次の用紙につい
ての印字指令がない場合、前記給紙ローラを所定量逆回
転させることを特徴とするプリンタの給紙装置が提供さ
れる。According to a first aspect of the present invention, a hopper capable of stacking a large number of recording sheets, a sheet feeding roller capable of contacting a part of the uppermost sheet on the hopper, and the sheet feeding roller. And a separation pad provided so as to face each other, and the paper feed roller rotates in the forward direction to feed the paper while passing between the paper feed roller and the separation pad, and the second and subsequent papers. In a paper feeding device of a printer configured to be constrained by a separation pad, if there is no print command for the next paper after a lapse of a certain time after the printing operation for any paper is finished, Provided is a paper feeding device of a printer, which is rotated by a fixed amount in the reverse direction.
【０００７】したがって、給紙ローラと分離パッドとの
間に少し噛み込まれていた次の用紙は給紙ローラの逆回
転によって分離パッドから離されてホッパー内へ引き戻
され、ホッパーをプリンタから取り出す場合に、用紙は
もはや給紙ローラと分離パッドとの間に噛み込まれてい
ることはないので、ホッパーを容易に取り外すことがで
きる。また、ホッパーを交換することなく、そのまま次
の印字動作を開始する場合においても、給紙を円滑に行
うことが出来る。Therefore, when the next sheet that has been bitten between the paper feed roller and the separation pad is separated from the separation pad by the reverse rotation of the paper feed roller and pulled back into the hopper, the hopper is taken out from the printer. Moreover, since the paper is no longer caught between the paper feed roller and the separation pad, the hopper can be easily removed. Further, even when the next printing operation is started without changing the hopper, the paper can be fed smoothly.
【０００８】請求項２によると、多数枚の記録用紙を積
載可能なホッパーと、該ホッパー上の最上部の用紙の前
端部上面に接触するように配置された給紙ローラとを含
み、給紙ローラが回転することにより前記最上部の用紙
が前方へ給紙されるように構成されたプリンタの給紙装
置において、前記ホッパーの用紙搭載領域の前端両側部
分に深さを調節可能な窪み部を設け、ホッパーに積載さ
れた用紙が略均一に給紙ローラに当接するように構成し
たことを特徴とするプリンタの給紙装置が提供される。According to a second aspect of the present invention, there is provided a paper hopper including a hopper capable of stacking a large number of recording paper sheets, and a paper feed roller arranged so as to come into contact with the upper surface of the front end portion of the uppermost paper sheet on the hopper. In a paper feeding device of a printer configured such that the uppermost paper is fed forward by rotating a roller, a depth-adjustable recess is provided at both front end portions of the paper loading area of the hopper. Provided is a paper feeding device for a printer, wherein the paper loaded in the hopper is configured to abut the paper feeding roller substantially uniformly.
【０００９】媒体によっては、左右で厚みの異なるもの
があるが、ホッパー上の用紙の左右端部に窪み部を設け
たので給紙ローラに当接する用紙前端部は、その中央部
と両側部とで給紙ローラに対する接触圧力が均一とな
り、円滑な給紙が行われ、用紙のスキュー等が防止され
る。この場合において、前記窪み部の内部に弾発性を有
するフラップを設け、ホッパーに積載された用紙の量に
応じてフラップの高さを自動的に変化させるように構成
してもよい。この場合、用紙の量に応じてフラップの高
さ、即ちホッパー底部の高さが自動的に調整され、用紙
の量に関係なく常時一定の圧力で用紙が給紙ローラに当
接することとなる。Depending on the medium, the right and left have different thicknesses, but since the recesses are provided at the left and right ends of the paper on the hopper, the front end of the paper that abuts the paper feed roller has a central portion and both side portions. As a result, the contact pressure with respect to the sheet feeding roller becomes uniform, smooth sheet feeding is performed, and sheet skew is prevented. In this case, a flap having elasticity may be provided inside the recess, and the height of the flap may be automatically changed according to the amount of sheets stacked in the hopper. In this case, the height of the flap, that is, the height of the bottom of the hopper is automatically adjusted according to the amount of paper, and the paper always contacts the paper feed roller with a constant pressure regardless of the amount of paper.
【００１０】[0010]
【発明の実施の形態】以下、添付図面を参照して本発明
の実施例について詳細に説明する。図１は本発明の給紙
装置を用いたプリンタの主要構成をブロック図であり、
図２は同プリンタの概略側面図である。図１において、
ＣＰＵは中央処理ユニットであり、このプリンタの各部
の動作を制御するものである。BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. FIG. 1 is a block diagram showing the main configuration of a printer using the paper feeding device of the present invention.
FIG. 2 is a schematic side view of the printer. In FIG.
The CPU is a central processing unit and controls the operation of each part of the printer.
【００１１】ホッパー１（図２）は多数枚の記録用紙２
を積み重ねて搭載可能で、先端部が上下に移動可能にな
っている。ホッパー１の上昇位置において、ホッパー１
の先端側上部に設けられた給紙（ピック）ローラ３は最
上部の用紙に接触する。トップセンサはホッパー１の上
昇によって用紙が給紙ローラの位置まで来たことを検出
するものである。分離パッド４は、２枚目以降の用紙が
１枚目の用紙につれて前進するのを防止するために、給
紙ローラ３に対向して設けられている。分離パッド４の
下流側には給紙センサ５が設けられ、用紙２の先端を検
出する。給紙制御部には、他に、ホッパーモータ兼給紙
モータ、切替ソレノイド等が設けられる。The hopper 1 (FIG. 2) has a large number of recording papers 2.
Can be stacked and mounted, and the tip can be moved up and down. In the raised position of the hopper 1, the hopper 1
The paper feed (pick) roller 3 provided on the upper side of the leading end of the sheet comes into contact with the uppermost sheet. The top sensor detects that the paper has reached the position of the paper feed roller due to the rise of the hopper 1. The separation pad 4 is provided so as to face the paper feed roller 3 in order to prevent the second and subsequent sheets of paper from advancing along with the first sheet of paper. A paper feed sensor 5 is provided on the downstream side of the separation pad 4 to detect the leading edge of the paper 2. In addition, the paper feed control unit is provided with a hopper motor / paper feed motor, a switching solenoid, and the like.
【００１２】改行制御部には、用紙搬送及び改行ローラ
駆動用（ＬＦ）モータ６がある。印字制御部には、キャ
リッジ（ＣＲ）モータがあり、印字ヘッド７を搭載した
キャリッジをプラテン（図示せず）に沿って用紙に対し
て左右に移動させる。ヘッドギャップ（ＨＧ）制御部
は、ヘッドギャップ調整用カム又はギア駆動用モータに
よって印字ヘッド７とプラテンとのギャップを調整す
る。読取センサ兼用紙センサ８は保持ヘッド７と共にキ
ャリッジに設けられる。The line feed control unit includes a sheet feeding and line feed roller driving (LF) motor 6. The print control unit has a carriage (CR) motor, and moves the carriage having the print head 7 left and right with respect to the paper along a platen (not shown). The head gap (HG) control unit adjusts the gap between the print head 7 and the platen by a head gap adjusting cam or a gear driving motor. The reading sensor / paper sensor 8 is provided on the carriage together with the holding head 7.
【００１３】図３は本発明による給紙装置の制御を示す
フローチャートである。まず、印字命令があると、ホッ
パー１が上昇する。トップセンサによってホッパーの上
昇位置を検出した時、ホッパーの上昇が停止する。この
時点で、ホッパー１内の最上位置の用紙２はその先端部
が給紙ローラ３に接触する。次に、給紙ローラ３が正回
転し、給紙が開始される。用紙２は給紙ローラ３と分離
パッド４との間を通過する。給紙センサ５によって、用
紙２の先端が検出されると、引続き給紙ローラ３によっ
て用紙２を搬送ローラ６の位置まで送る。給紙ローラ３
の正回転後、一定時間が経過しても、用紙が検出されな
いときは用紙なしと判断し、ホッパー１を下限位置まで
下降させる。FIG. 3 is a flow chart showing the control of the sheet feeding device according to the present invention. First, when there is a print command, the hopper 1 moves up. When the top sensor detects the rising position of the hopper, the rising of the hopper stops. At this point, the leading edge of the uppermost sheet 2 in the hopper 1 contacts the sheet feeding roller 3. Next, the paper feed roller 3 rotates in the forward direction, and paper feed is started. The paper 2 passes between the paper feed roller 3 and the separation pad 4. When the paper feed sensor 5 detects the leading edge of the paper 2, the paper feed roller 3 continues to feed the paper 2 to the position of the transport roller 6. Paper feed roller 3
After the normal rotation of No., if no paper is detected within a certain period of time, it is determined that there is no paper, and the hopper 1 is lowered to the lower limit position.
【００１４】給紙センサ５によって用紙２の先端が検出
された後、所定時間後には用紙２は搬送ローラ６の位置
に達していて、この時点で搬送ローラ５が正回転する。
そしてホッパー１を一定量下降させる。用紙センサ８が
用紙２の先端を検出し、この時点で用紙後端が給紙ロー
ラ３から外れているか否かを判断し、外れている場合
は、給紙（ピック）モータを停止し、搬送ローラ６によ
り用紙を印字位置まで搬送し（即ち、改行し）、印刷を
開始する。外れていない場合は、用紙が１枚目の場合、
用紙長さの検出のために給紙ローラ３を間欠的に駆動す
る。なお、給紙ローラ３の駆動を停止する際は、例えば
図４に示すように、給紙ローラ３と給紙（ピック）モー
タ１１との連結を断ち、用紙のバック負荷を軽減させ
る。なお、図４において、３は給紙ローラ、１１は給紙
モータ、１２は給紙ローラの軸に取付けたギア、１３は
給紙モータの軸に取付けたギアで、これらのギア１２、
１３間の中間ギア１４、１４’を図示の矢印Ｐのように
移動させることで、給紙ローラ３と給紙モータ１１との
間を連結又は遮断することができる。After the leading edge of the paper 2 is detected by the paper feed sensor 5, the paper 2 reaches the position of the carry roller 6 after a predetermined time, and the carry roller 5 rotates forward at this time.
Then, the hopper 1 is lowered by a certain amount. The sheet sensor 8 detects the leading edge of the sheet 2, and at this time, it is determined whether or not the trailing edge of the sheet has deviated from the sheet feeding roller 3. If deviated, the sheet feeding (pick) motor is stopped and the sheet is conveyed. The sheet is conveyed to the print position by the roller 6 (that is, line feed is started), and printing is started. If it does not come off, if the first sheet of paper,
The paper feed roller 3 is driven intermittently to detect the paper length. When the driving of the paper feed roller 3 is stopped, the connection between the paper feed roller 3 and the paper feed (pick) motor 11 is cut off to reduce the back load of the paper, as shown in FIG. 4, for example. In FIG. 4, 3 is a paper feed roller, 11 is a paper feed motor, 12 is a gear attached to the shaft of the paper feed roller, and 13 is a gear attached to the shaft of the paper feed motor.
By moving the intermediate gears 14 and 14 ′ between 13 as shown by an arrow P in the drawing, the paper feed roller 3 and the paper feed motor 11 can be connected or disconnected.
【００１５】当該用紙について印字が終了すると、用紙
が排出される。このような動作が所要枚数（頁数）につ
いて連続して行われ、全枚数（頁数）について印刷が完
了すると、一定時間（例えば５秒間）内に次の印刷命令
がない場合は、給紙ローラ３を所定量逆方向の回転させ
る。この所定量とは、給紙ローラ３と分離パッド４との
間にかみこまれた次の用紙が外れて、ホッパー１内へ戻
るに十分な回転量とする。When the printing of the paper is completed, the paper is ejected. When such an operation is continuously performed for the required number of pages (number of pages) and printing is completed for all the number of pages (number of pages), if there is no next print command within a certain time (for example, 5 seconds), the paper feed is performed. The roller 3 is rotated in the opposite direction by a predetermined amount. The predetermined amount is a rotation amount sufficient for the next sheet caught between the sheet feed roller 3 and the separation pad 4 to come off and return into the hopper 1.
【００１６】図５にホッパー１及び給紙ローラ３を動作
を示す。（ａ）は給紙直後に次の用紙２が給紙ローラ３
と分離パッド４との間にかみこまれた状態、（ｂ）はホ
ッパー１を下降させ且つ給紙ローラ３を逆回転させた状
態を示す。（ｃ）は給紙ローラ３の逆回転により、給紙
ローラ３と分離パッド４との間にかみこまれていた用紙
２がホッパー１上に戻された状態を示す。なお、図５
（ａ）に示すように、給紙位置において、ホッパー１の
角度は最上位置の用紙２がホッパー上又は用紙上を前方
へ滑り出し、かつ図５（ｂ）に示すように、用紙２が戻
るときは整然と用紙スタックされるような最適な角度
（やや前方に向けて下方に傾斜させた角度）とするのが
好適である。FIG. 5 shows the operation of the hopper 1 and the paper feed roller 3. In (a), the next sheet 2 is fed by the sheet feeding roller 3 immediately after feeding.
And (b) shows a state in which the hopper 1 is lowered and the paper feed roller 3 is rotated in the reverse direction. (C) shows a state in which the paper 2 which has been caught between the paper feed roller 3 and the separation pad 4 is returned to the hopper 1 by the reverse rotation of the paper feed roller 3. Note that FIG.
As shown in (a), at the paper feeding position, the angle of the hopper 1 is such that when the uppermost sheet 2 slides forward on the hopper or on the sheet, and as shown in FIG. 5 (b), the sheet 2 returns. Is preferably an optimal angle (an angle slightly inclined downward toward the front) so that the sheets are stacked in an orderly manner.
【００１７】このように、本発明によると、最初の用紙
２が給紙ローラ３により送られてから、印字動作が終了
して、次の用紙２の移動が開始されるまでの間、次の用
紙２は常時給紙ローラ３と分離パッド４との間に噛み込
んでいるが、一連の用紙についての印刷作業が終了した
後は、給紙ローラ３が逆回転して、給紙ローラ３と分離
パッド４との間に噛み合っていた用紙がホッパー１内へ
戻されるので、ホッパー１をプリンタから取り出す場合
においても、すべての用紙をホッパーとともに容易に取
り外すことができる。As described above, according to the present invention, after the first paper 2 is fed by the paper feed roller 3, the printing operation is completed and the movement of the next paper 2 is started. Although the paper 2 is always caught between the paper feed roller 3 and the separation pad 4, the paper feed roller 3 rotates in the reverse direction after the printing operation for a series of paper is completed, Since the paper meshed with the separation pad 4 is returned into the hopper 1, all the paper can be easily removed together with the hopper even when the hopper 1 is taken out from the printer.
【００１８】図６はホッパー部の機能を示す原理図であ
り、図７〜図９はホッパーの各実施例である。一般に用
紙２に変形等があり、積載された用紙の左右で厚みが異
なると、給紙ローラ３が用紙２に片当りしてしまいピッ
クミス、即ち給紙不良を起こしスキュー等の原因となる
ことがあるが、本発明では、図６に示すように、積載さ
れた用紙の分厚い部分、即ちホッパー１の用紙搭載領域
の前端の左右両側に窪み部２０を設けることで、用紙２
の厚みを逃がし、用紙２に対して給紙ローラ３を均一に
接触させて安定して給紙を行うことができるようにし
た。FIG. 6 is a principle view showing the function of the hopper portion, and FIGS. 7 to 9 show each embodiment of the hopper. In general, when the paper 2 is deformed and the thickness of the stacked papers is different between the left and right, the paper feed roller 3 is partially contacted with the paper 2 and a pick mistake, that is, a paper feed failure is caused, which may cause skew. However, according to the present invention, as shown in FIG. 6, by providing the recessed portions 20 on the thick portion of the stacked sheets, that is, on the left and right sides of the front end of the sheet mounting area of the hopper 1, the sheet 2
The thickness of the sheet is released, and the sheet feeding roller 3 is brought into uniform contact with the sheet 2 so that the sheet can be stably fed.
【００１９】図７の実施例では、窪み部２０の内部に弾
発性を有するフラップ２１を設け、ホッパー１に積載さ
れた用紙の量が多い（即ち重い）時は、フラップ２１に
かかる荷重が大きく、フラップ２１をより大きく下方へ
変形させて、窪みの量を大きくし、用紙の積載量が少な
い時は、フラップ２１にかかる荷重が少なく、フラップ
２１の下方への変形を小さく窪みの量を小さくした。こ
れにより、用紙の積載量に関係なく、常時給紙ローラ３
を用紙２に均一に接触させることができる。In the embodiment shown in FIG. 7, a flap 21 having elasticity is provided inside the recess 20. When the amount of paper loaded on the hopper 1 is large (that is, heavy), the load applied to the flap 21 is large. Larger, the flap 21 is further deformed downward to increase the amount of the depression, and when the load of paper is small, the load applied to the flap 21 is small, and the downward deformation of the flap 21 is reduced to reduce the amount of the depression. I made it smaller. As a result, the continuous paper feed roller 3 is irrespective of the amount of paper loaded.
Can be uniformly contacted with the paper 2.
【００２０】図８及び図９の実施例では、ホッパー１の
左右両側に設けた窪み部２０にフラップ２１を設けると
共に、用紙の厚みが均一な場合、Ａの位置に、図示のよ
うな断面略Ｕ字形の部材２２を配置し、用紙２の落ち込
みを防ぎ、左右で厚みが異なる場合はこの部材２２をＢ
の位置へスライド（図８）させ、又は回動（図９の斜
線）させ、又は取り外す（図９）等の方法により用紙２
の厚みを逃がす構造とする。このような構造により、積
載された用紙の厚みの差に関わらず給紙ローラ３を用紙
２に対して均一に設定することができる。In the embodiment shown in FIGS. 8 and 9, flaps 21 are provided in the recesses 20 provided on both the left and right sides of the hopper 1, and when the thickness of the paper is uniform, the cross section shown in the figure is omitted at the position A. A U-shaped member 22 is arranged to prevent the paper 2 from falling, and when the left and right sides have different thicknesses, this member 22 is
Paper 2 by sliding (FIG. 8), rotating (shaded in FIG. 9), or removing (FIG. 9).
It has a structure that allows the thickness of the With such a structure, the paper feed roller 3 can be set uniformly on the paper 2 regardless of the difference in the thickness of the stacked paper.
【００２１】以上、添付図面を参照して本発明の実施例
について詳細に説明したが、本発明は上記の実施例に限
定されるものではなく、本発明の精神ないし範囲内にお
いて種々の形態、変形、修正等が可能であることに留意
すべきである。The embodiments of the present invention have been described above in detail with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments, and various embodiments within the spirit and scope of the present invention, It should be noted that variations, modifications, etc. are possible.
【００２２】[0022]
【発明の効果】このように、本発明によると、一連の用
紙についての印刷作業が終了した後は、給紙ローラが逆
回転して、給紙ローラと分離パッドとの間に噛み合って
いた用紙がホッパー１内へ戻されるので、ホッパーをプ
リンタから取り出す場合においても、すべての用紙をホ
ッパーとともに容易に取り外すことができ、給紙を安定
させることが出来る。また、給紙される用紙の厚みに変
化があっても安定して給紙させることが出来る。As described above, according to the present invention, after the printing operation for a series of papers is completed, the paper feed roller rotates in the reverse direction, and the papers meshed between the paper feed roller and the separation pad. Since the paper is returned to the inside of the hopper 1, all the paper can be easily removed together with the hopper even when the hopper is taken out from the printer, and the paper feeding can be stabilized. Further, even if the thickness of the fed paper is changed, the paper can be fed stably.
【図１】本発明の給紙装置を用いたプリンタの主要構成
をブロック図で示す。FIG. 1 is a block diagram showing the main configuration of a printer using a paper feeding device of the present invention.
【図２】本発明の給紙装置の概略側面図である。FIG. 2 is a schematic side view of the paper feeding device of the present invention.
【図３】本発明による給紙装置の制御を示すフローチャ
ートである。FIG. 3 is a flowchart showing control of a paper feeding device according to the present invention.
【図４】給紙ローラの動力を遮断する機構の斜視図であ
る。FIG. 4 is a perspective view of a mechanism that shuts off power of a sheet feeding roller.
【図５】本発明の給紙装置の給紙ローラを動作を説明す
る図である。FIG. 5 is a diagram for explaining the operation of the sheet feeding roller of the sheet feeding device of the present invention.
【図６】ホッパー部の機能を示す原理図である。FIG. 6 is a principle view showing a function of a hopper unit.
【図７】ホッパーの一実施例を示す。FIG. 7 shows an example of a hopper.
【図８】ホッパーの他の実施例を示す。FIG. 8 shows another embodiment of the hopper.
【図９】ホッパーの更に他の実施例を示す。FIG. 9 shows yet another embodiment of the hopper.
１…ホッパー ２…用紙 ３…給紙ローラ ４…分離パッド ５…給紙センサ ６…搬送ローラ ７…印字ヘッド ８…読取兼用紙センサ １１…給紙モータ １２、１３、１４…ギア ２０…窪み ２１…フラップ DESCRIPTION OF SYMBOLS 1 ... Hopper 2 ... Paper 3 ... Paper feeding roller 4 ... Separation pad 5 ... Paper feeding sensor 6 ... Conveying roller 7 ... Print head 8 ... Read / paper sensor 11 ... Paper feeding motor 12, 13, 14 ... Gear 20 ... Recess 21 …flap
Claims (3)
と、該ホッパー上の最上部の用紙の一部分に接触可能な
給紙ローラと、該給紙ローラに対向して設けられた分離
パッドとを含み、給紙ローラが正回転することにより前
記用紙が給紙ローラと分離パッドとの間を通過して給紙
されると共に、２枚目以降の用紙が分離パッドにより拘
束されるように構成されたプリンタの給紙装置におい
て、任意の用紙についての印字動作の終了後一定時間経
過後に次の用紙についての印字指令がない場合、前記給
紙ローラを所定量逆回転させることを特徴とするプリン
タの給紙装置。1. A hopper capable of stacking a large number of recording sheets, a sheet feeding roller capable of contacting a part of the uppermost sheet on the hopper, and a separation pad provided so as to face the sheet feeding roller. When the paper feed roller rotates normally, the paper passes between the paper feed roller and the separation pad to be fed, and the second and subsequent papers are restrained by the separation pad. In the paper feeding device of the printer, the paper feeding roller is reversely rotated by a predetermined amount when there is no print command for the next paper after a lapse of a certain time after the printing operation for an arbitrary paper is completed. Paper feeder.
と、該ホッパー上の最上部の用紙の前端部上面に接触す
るように配置された給紙ローラとを含み、給紙ローラが
回転することにより前記最上部の用紙が前方へ給紙され
るように構成されたプリンタの給紙装置において、前記
ホッパーの用紙搭載領域の前端用紙厚が左右で異なる媒
体を積載したときに高くなる部分に深さを調節可能な窪
み部を設け、ホッパーに積載された用紙が略均一に給紙
ローラに当接するように構成したことを特徴とするプリ
ンタの給紙装置。2. A hopper capable of stacking a large number of recording papers, and a paper feed roller arranged so as to come into contact with the upper surface of the front end of the uppermost paper on the hopper, and the paper feed roller rotates. As a result, in the paper feeding device of the printer configured to feed the uppermost paper to the front side, the paper loading area of the hopper has a front end paper thickness that increases when a different medium is loaded on the left and right sides. A paper feeding device for a printer, characterized in that a depth adjustable recess is provided so that the paper loaded in the hopper abuts the paper feeding roller substantially uniformly.
ップを設け、ホッパーに積載された用紙の量に応じてフ
ラップの高さを自動的に変化させるように構成したこと
を特徴とするプリンタの給紙装置。3. A flap having elasticity is provided inside the recess, and the height of the flap is automatically changed according to the amount of sheets stacked in the hopper. Paper feeder for the printer.
Priority Applications (20)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20970295A JP3192932B2 (en) | 1995-08-17 | 1995-08-17 | Printer paper feeder |
| US08/647,894 US5713674A (en) | 1994-10-06 | 1995-10-06 | Paper feed method and apparatus for a printer |
| CN95191148A CN1058661C (en) | 1994-10-06 | 1995-10-06 | Paper feed method and apparatus for printers |
| PCT/JP1995/002060 WO1996011111A1 (en) | 1994-10-06 | 1995-10-06 | Paper feed method and apparatus for printers |
| DE19581389T DE19581389T1 (en) | 1994-10-06 | 1995-10-06 | Paper feed method and apparatus for a printer |
| US09/016,331 US5848847A (en) | 1994-10-06 | 1998-01-30 | Paper feed method and apparatus for a printer |
| US09/016,341 US5993085A (en) | 1994-10-06 | 1998-01-30 | Paper feed method and apparatus for a printer |
| US09/016,327 US6089564A (en) | 1994-10-06 | 1998-01-30 | Paper feed method and apparatus for a printer |
| US09/016,292 US5882129A (en) | 1994-10-06 | 1998-01-30 | Paper feed method and apparatus for a printer |
| US09/016,640 US5846007A (en) | 1994-10-06 | 1998-01-30 | Paper feed method and apparatus for a printer |
| US09/016,330 US5915862A (en) | 1994-10-06 | 1998-01-30 | Paper feed method and apparatus for a printer using a main body flap and movable insulating and guide cover |
| US09/016,639 US6022015A (en) | 1994-10-06 | 1998-01-30 | Paper feed method and apparatus for a printer |
| CN00101613.XA CN1272429A (en) | 1994-10-06 | 2000-01-20 | Paper supply mechanism for printer |
| CN00101614.8A CN1124938C (en) | 1994-10-06 | 2000-01-20 | Print gap adjustment mechanism for printing machine |
| CN00101617.2A CN1124939C (en) | 1994-10-06 | 2000-01-20 | Print gap adjustment mechanism for printing machine |
| CN00101618.0A CN1268440A (en) | 1994-10-06 | 2000-01-20 | Mechaism for adjusting parallel of printing head |
| CN00101619.9A CN1268443A (en) | 1994-10-06 | 2000-01-20 | Printing machine having sound-deadening mechanism |
| CN00101616.4A CN1268438A (en) | 1994-10-06 | 2000-01-20 | Paper feeder for printing machine |
| CN00101615.6A CN1268439A (en) | 1994-10-06 | 2000-01-20 | Mechanism and method for feeding paper for printing machine |
| US09/549,554 US6224051B1 (en) | 1994-10-06 | 2000-04-14 | Paper feed method and apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20970295A JP3192932B2 (en) | 1995-08-17 | 1995-08-17 | Printer paper feeder |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0952636A true JPH0952636A (en) | 1997-02-25 |
| JP3192932B2 JP3192932B2 (en) | 2001-07-30 |
Family
ID=16577227
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP20970295A Expired - Fee Related JP3192932B2 (en) | 1994-10-06 | 1995-08-17 | Printer paper feeder |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3192932B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003095450A (en) * | 2001-09-26 | 2003-04-03 | Oki Electric Ind Co Ltd | Medium feeding device |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10850348B2 (en) | 2017-07-28 | 2020-12-01 | Dana Canada Corporation | Device and method for alignment of parts for laser welding |
| CN111094888B (en) | 2017-07-28 | 2021-12-10 | 达纳加拿大公司 | Ultra-thin heat exchanger for thermal management |
-
1995
- 1995-08-17 JP JP20970295A patent/JP3192932B2/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003095450A (en) * | 2001-09-26 | 2003-04-03 | Oki Electric Ind Co Ltd | Medium feeding device |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3192932B2 (en) | 2001-07-30 |
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