JP2758051B2 - Image printer - Google Patents
Image printerInfo
- Publication number
- JP2758051B2 JP2758051B2 JP1341544A JP34154489A JP2758051B2 JP 2758051 B2 JP2758051 B2 JP 2758051B2 JP 1341544 A JP1341544 A JP 1341544A JP 34154489 A JP34154489 A JP 34154489A JP 2758051 B2 JP2758051 B2 JP 2758051B2
- Authority
- JP
- Japan
- Prior art keywords
- recording paper
- paper
- guide portion
- roller
- end surface
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Landscapes
- Handling Of Cut Paper (AREA)
- Sheets, Magazines, And Separation Thereof (AREA)
Description
【発明の詳細な説明】 産業上の利用分野 本発明は、自動給紙機構を備えた画像プリンタに関す
るものである。Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an image printer having an automatic paper feed mechanism.
従来の技術 近年、画像プリンタにおいては、サーマルヘッドを有
する画像プリンタに特有な厚手の特殊なコーティングを
施した環境条件によってカールしやすいPETベースなど
の記録紙を連続かつ自動的に装置内の記録部に供給する
ために自動給紙機構を有するものが見られるようになっ
てきた。2. Description of the Related Art In recent years, in image printers, a recording sheet such as a PET base, which is easily curled due to environmental conditions with a thick special coating peculiar to an image printer having a thermal head, is automatically and continuously recorded in a recording unit. In order to supply paper to the paper, those having an automatic paper feed mechanism have come to be seen.
以下図面を参照しながら、従来の画像プリンタの例に
ついて説明する。第３図は従来の画像プリンタの断面図
を示す。第３図において、装置本体14にはサーマルヘッ
ド１、プラテン２、インクシート３からなる記録部が設
けられ、その給紙方向上流側に、給紙後記録15を駆動す
るキャプスタン４とピンチローラ５が設けられ、さらに
その給紙方向上流側に、給紙と排紙の切換えをする切換
ガイド６とさらにその上流側にセパレートローラ７とピ
ックアップローラ８が回転可能に設けられ、このピック
アップローラ８とセパレートローラ７間にわたって搬送
ベルト９が張架されている。さらに、セパレートローラ
７に対応する位置にリバースローラ10が設けられ、この
リバースローラ10はトルクリミッタを同軸上に有して回
転可能であり、装置本体14に回動可能に取り付けられた
リバースローラ保持アングル11に保持されて、セパレー
トローラ７の側で搬送ベルト９に付して当接可能に構成
されている。また、ガイド板12はセパレートローラ７と
記録部のプラテン２に至る間に設けられ、給紙後の記録
紙15を案内する、枚葉状の記録紙15を収納する記録紙カ
セット16は装置本体14のガイド部13に着脱自在に取付け
られる。紙押圧板17は一端を中心に回動可能に設けら
れ、この紙押圧板17の上に記録紙カセット16に収納され
た記録紙15が積載され、押上レバー18が紙押圧板17を一
端を中心に回動して押上げたときに、記録紙15は搬送ベ
ルト９に押圧される。Hereinafter, an example of a conventional image printer will be described with reference to the drawings. FIG. 3 shows a sectional view of a conventional image printer. In FIG. 3, a recording unit including a thermal head 1, a platen 2, and an ink sheet 3 is provided in an apparatus main body 14, and a capstan 4 and a pinch roller for driving a post-feeding recording 15 are provided on the upstream side in the paper feeding direction. Further, a switching guide 6 for switching between paper feeding and paper discharging is provided on the upstream side in the paper feeding direction, and a separate roller 7 and a pickup roller 8 are further rotatably provided on the upstream side thereof. A transport belt 9 is stretched between the roller and the separate roller 7. Further, a reverse roller 10 is provided at a position corresponding to the separate roller 7. The reverse roller 10 has a torque limiter coaxially and is rotatable, and a reverse roller holding rotatably attached to the apparatus body 14. It is held by the angle 11, and is configured to be able to abut on the transport belt 9 on the side of the separate roller 7. The guide plate 12 is provided between the separate roller 7 and the platen 2 of the recording unit. The guide plate 12 guides the recording paper 15 after the paper is fed. Is detachably attached to the guide portion 13 of the main body. The paper pressing plate 17 is provided so as to be rotatable around one end, and the recording paper 15 stored in the recording paper cassette 16 is stacked on the paper pressing plate 17, and the lifting lever 18 holds the paper pressing plate 17 at one end. The recording paper 15 is pressed against the conveyor belt 9 when the recording paper 15 is pivoted up and pushed up.
このように構成された従来の画像プリンタについて、
以下その動作を説明する。まず、記録紙15を複数枚収納
した記録紙カセット16が装置本体14のガイド部13に沿っ
て所定の位置に挿入保持される。給紙の際には、押上レ
バー18が上方に回動し、紙押圧板17を一端を支点として
回動させて他端を押上げ、紙押圧板17上に積載した記録
紙15を搬送ベルト９に押圧する。次に、ピックアップロ
ーラ８またはセパレートローラ７が回転することにより
搬送ベルト９は給紙方向に駆動され、記録紙15は１枚ま
たは数枚が搬送されることになる。For the conventional image printer configured as described above,
The operation will be described below. First, a recording paper cassette 16 containing a plurality of recording papers 15 is inserted and held at a predetermined position along a guide portion 13 of the apparatus main body 14. When feeding the paper, the lifting lever 18 is rotated upward, the paper pressing plate 17 is rotated about one end as a fulcrum, and the other end is pushed up, and the recording paper 15 stacked on the paper pressing plate 17 is conveyed by the transport belt. Press 9 Next, as the pickup roller 8 or the separate roller 7 rotates, the transport belt 9 is driven in the paper feeding direction, and one or several recording papers 15 are transported.
一方、給紙の際には、セパレートローラ７に対し離間
していたリバースローラ10がリバースローラ保持アング
ル11によって記録紙15を押圧する方向へ回動し、搬送ベ
ルト９を押圧する。ここで、リバースローラ10は同軸上
にトルクリミッタを備えて給紙方向に対して逆回転可能
であり、１枚の記録紙15ならばそのまま記録紙15を搬送
し、２枚以上ならば２枚目以降はさばいて逆送させる役
目を有している。搬送された１枚の記録紙15はガイド板
12と切換えガイド６にガイドされ、キャプスタン４とピ
ンチローラー５の間を通過して給紙動作の完了となる。
以後はキャプスタン４とピンチローラ５の押圧回転で搬
送され、同時に押上レバー18とリバースローラ10は降下
する。On the other hand, at the time of paper feeding, the reverse roller 10 that has been separated from the separate roller 7 rotates in the direction of pressing the recording paper 15 by the reverse roller holding angle 11 and presses the transport belt 9. Here, the reverse roller 10 is provided with a torque limiter on the same axis and can be rotated in the reverse direction in the paper feeding direction. If one recording paper 15 is used, the recording paper 15 is conveyed as it is. It has the role of judge and reverse feed after the eyes. One transported recording paper 15 is a guide plate
The sheet feeding operation is completed by being guided between the capstan 4 and the pinch roller 5 by being guided by the switching guide 6 and 12.
Thereafter, the paper is conveyed by the pressing and rotating of the capstan 4 and the pinch roller 5, and at the same time, the lifting lever 18 and the reverse roller 10 descend.
このとき、搬送ベルト９により搬送され、リバースロ
ーラ10によりさばかれた記録紙15は、第４図に示すよう
に、記録紙カセット16の給紙方向下流側の記録紙当接部
端面16aに乗り上げることがある。この状態で１枚目に
搬送される記録紙15aと記録紙当接部端面11aに乗り上げ
た記録紙15bが接触すると、静電気による密着力が発生
し、そのまま装置本体14の内部まで取り込まれる重送が
起きていた。これを防ぐために、従来は、搬送ベルト９
と記録紙当接部端面16aの間に、記録紙15の10数枚分の
厚みに相当する隙間を設けていた。At this time, the recording paper 15 conveyed by the conveyance belt 9 and separated by the reverse roller 10 rides on the recording paper contact portion end face 16a on the downstream side in the paper feeding direction of the recording paper cassette 16, as shown in FIG. Sometimes. In this state, when the recording paper 15a conveyed to the first sheet comes into contact with the recording paper 15b riding on the recording paper abutting end face 11a, an adhesion force due to static electricity is generated, and the multi-feed is taken into the apparatus body 14 as it is. Was up. In order to prevent this, conventionally, the conveying belt 9
A gap corresponding to the thickness of ten or more recording papers 15 was provided between the recording paper 15 and the recording paper contact end face 16a.
発明が解決しようとする課題 しかしながら上記のような構成では、搬送ベルト９と
記録紙カセット16の給紙方向下流側の記録紙当接部端面
16aの間に記録紙15の10数枚分の隙間を設けているの
で、給紙の際には、第５図に示すように、リバースロー
ラ10まで全隙間分の記録紙15が突入することがある。10
数枚の記録紙15が一度に突入すると、リバースローラ10
の回転は止められ、スティック動作を誘発し、異音を発
生したり、数枚まとめて重送されるといった問題を有し
ていた。SUMMARY OF THE INVENTION However, in the above-described configuration, the end surface of the recording paper contact portion on the downstream side in the paper feeding direction of the transport belt 9 and the recording paper cassette 16 is used.
Since a gap of ten or more sheets of recording paper 15 is provided between 16a, at the time of paper feeding, as shown in FIG. There is. Ten
When several sheets of recording paper 15 enter at once, the reverse roller 10
Has been stopped, causing stick motion, generating abnormal noise, and several sheets are fed together.
本発明は上記問題を解決するもので、記録紙カセット
の給紙方向下流側のコーナー部に臨み、記録紙の上面、
下面、側端面、前端面をそれぞれ案内するガイド部を有
し記録紙の押圧動作に連動して回動するように設けら
れ、上面ガイド部と側端面ガイド部のなす角度を鈍角に
構成するとともに、上面ガイド部と前端面ガイド部が形
成する隙間を少なくとも記録紙の厚さ５枚以内とするゲ
ート部材を設けた構成にすることによって、カールによ
る引っかかりによる給紙不能や、静電気密着による重
送、多数枚突入による異音の発生を防止する信頼性の高
い画像プリンタを提供することを目的とするものであ
る。The present invention solves the above-described problem, and faces the downstream corner of the recording paper cassette in the paper feeding direction, and the upper surface of the recording paper,
It has guide portions for guiding the lower surface, the side end surface, and the front end surface, and is provided so as to rotate in conjunction with the pressing operation of the recording paper, and the angle formed between the upper surface guide portion and the side end surface guide portion is made obtuse. By providing a gate member having a gap formed by the upper surface guide portion and the front end surface guide portion of at least 5 sheets of recording paper, paper cannot be fed due to curling, or double feed due to electrostatic adhesion. It is another object of the present invention to provide a highly reliable image printer which prevents generation of abnormal noise due to the entry of a large number of sheets.
課題を解決するための手段 上記課題を解決するために本発明の画像プリンタは、
枚葉状の厚手の記録紙を収納する記録紙カセットと、前
記記録紙カセットの上方位置に設けられて、収納された
前記記録紙が接触したときに前記記録紙を搬送する搬送
ベルトまたはローラと、前記記録紙カセットの下方から
前記記録紙を前記搬送ベルトまたはローラに押圧せしめ
る紙押圧板と、前記搬送ベルトまたはローラの給紙方向
下流側に設けられて、前記搬送ベルトまたはローラに押
圧可能であり、押圧時に前記記録紙の２枚目以降をさば
くように構成されたリバースローラと、前記記録紙カセ
ットの給紙方向下流側の片側コーナーに臨み、前記記録
紙の給紙方向下流側の片側コーナー上面、下面、側端
面、前端面にそれぞれ案内するガイド部を有し、前記紙
押圧板による押圧動作に連動して前記記録紙カセットの
底面に設けた軸を支軸として回動するように設け且つ、
前記上面ガイド部と前記側端面ガイド部のなす角度を前
記記録紙の側端面から中心に向けて鈍角に構成するとと
もに、前記上面ガイド部と前記前端面ガイド部が形成す
る間隙の最小部を少なくとも前記記録紙の厚さ５枚以内
に構成し且つ前記記録紙の側端面から中心に向けて前記
間隙が漸増的に広がるように構成したゲート部材を設け
た構成にしたものである。Means for Solving the Problems To solve the above problems, the image printer of the present invention is
A recording paper cassette for storing sheet-like thick recording paper, and a transport belt or roller provided at a position above the recording paper cassette and transporting the recording paper when the stored recording paper comes in contact with the recording paper cassette, A paper pressing plate for pressing the recording paper against the transport belt or roller from below the recording paper cassette; and a paper pressing plate provided downstream of the transport belt or roller in the paper feeding direction, and capable of pressing against the transport belt or roller. A reverse roller configured to separate the second and subsequent sheets of the recording paper when pressed; and a one-side corner facing the downstream side of the recording sheet cassette in the sheet feeding direction and facing one side corner of the recording sheet cassette. It has guide portions for guiding the upper surface, the lower surface, the side end surface, and the front end surface, respectively, and supports a shaft provided on the bottom surface of the recording paper cassette in conjunction with the pressing operation by the paper pressing plate. And it provided so as to rotate,
The angle formed by the upper surface guide portion and the side end surface guide portion is configured to be an obtuse angle from the side end surface of the recording paper toward the center, and a minimum portion of a gap formed by the upper surface guide portion and the front end surface guide portion is at least. Preferably, a gate member is provided within a thickness of the recording paper of 5 sheets or less and the gap is gradually increased from a side end surface of the recording paper toward the center.
作用 上記した構成により、記録紙が搬送ベルトまたはロー
ラに押圧状態のときに、ゲート部材は記録紙を案内しな
がら積層した記録紙により持ち上げられる。このとき、
上部の記録紙は複数枚がまとまって搬送されようとする
が、ゲート部材の上部ガイド部と前端面ガイド部とで形
成される間隙によって通過可能枚数が決定され、所定の
枚数以上の記録紙は前端面ガイド部に止められる。した
がってリバースローラ部には10数枚の記録紙がまとまっ
て突っ込むことはなくなり、２枚目以降の記録紙は確実
にさばかれて最上部の１枚だけが搬送され、異音や重送
の発生を防止できることとなる。また、厚手のカールし
た記録紙を給紙する場合、記録紙が横方向に凸にカール
してしまうと、記録紙が厚手なためカールの補正が両サ
イドの部分ではなされず、ゲート部材の間隙に引っかか
り、給紙不能を起こしてしまうことがあるが、記録紙の
上面と側端面を案内するガイド部のなす角度を鈍角に設
け、間隙が記録紙の端面から中心へ向かう程広がって行
くという構成をとっているため、カールの影響を受け
ず、記録紙の引っかかりによる給紙不能を防止できるこ
ととなる。Operation According to the above configuration, when the recording paper is pressed against the transport belt or the roller, the gate member is lifted by the laminated recording paper while guiding the recording paper. At this time,
Although a plurality of sheets of recording paper on the upper side tend to be conveyed together, the number of sheets that can pass is determined by the gap formed by the upper guide portion and the front end surface guide portion of the gate member. Stopped by the front end guide. Therefore, a dozen or more sheets of recording paper do not collectly rush into the reverse roller, and the second and subsequent sheets are reliably separated and only the top sheet is conveyed, causing abnormal noise and double feed. Can be prevented. Also, when feeding thick curled recording paper, if the recording paper curls convexly in the horizontal direction, the curl is not corrected on both sides because the recording paper is thick, and the gap between the gate members May cause paper feed failure.However, the angle between the upper surface of the recording paper and the guide portion that guides the side end surface is provided at an obtuse angle, and the gap is widened from the end surface of the recording paper toward the center. Since the configuration is adopted, it is possible to prevent the sheet from being unable to be fed due to the catch of the recording sheet without being affected by the curl.
実施例 以下本発明の一実施例を図面に基づいて説明する。An embodiment of the present invention will be described below with reference to the drawings.
第１図は本発明の一実施例の画像プリンタの構成を示
す断面図、第２図は同画像プリンタの要部を示す斜視図
である。第１図および第２図において、従来例と同じ番
号のものは同一部品を示すので、その詳細な説明は省略
する。20はゲート部材であり、記録紙カセット16の給紙
方向下流側端部の片側コーナー部に臨み、記録紙15の最
上段上面を案内する上面ガイド部20aと、記録紙15の側
端面を案内する側端面ガイド部20bと、記録紙15の給紙
方向下流側の前端面を案内する前端面ガイド部20cと、
記録紙15の最下段の下面を案内する下面ガイド部20dを
有し、紙押圧板17による記録紙15の押圧動作に連動する
ように軸21を中心に回動自在に記録紙カセット16に設け
られ、かつ上面ガイド部20aと側端面ガイド部20bのなす
角度は鈍角θをなすように構成され、さらに、上面ガイ
ド部20aと前端面ガイド部20cの間に形成される間隙は記
録紙15のたとえば厚さ３枚分となるように構成されてい
る。FIG. 1 is a cross-sectional view showing the configuration of an image printer according to an embodiment of the present invention, and FIG. 2 is a perspective view showing a main part of the image printer. In FIGS. 1 and 2, those having the same numbers as those of the conventional example indicate the same parts, and thus detailed description thereof will be omitted. Reference numeral 20 denotes a gate member, which faces one corner at the downstream end of the recording paper cassette 16 in the paper feeding direction and guides the upper end guide surface 20a of the recording paper 15 and the side end surface of the recording paper 15 A side end surface guide portion 20b, and a front end surface guide portion 20c for guiding a front end surface of the recording paper 15 on the downstream side in the paper feeding direction.
It has a lower surface guide portion 20d for guiding the lower surface of the lowermost stage of the recording paper 15, and is provided on the recording paper cassette 16 so as to be rotatable about an axis 21 so as to interlock with the pressing operation of the recording paper 15 by the paper pressing plate 17. And the angle formed between the upper surface guide portion 20a and the side end surface guide portion 20b is configured to form an obtuse angle θ, and the gap formed between the upper surface guide portion 20a and the front end surface guide portion 20c is For example, it is configured to have a thickness of three sheets.
このように構成された本実施例の画像プリンタについ
て以下その動作について説明する。まず、記録紙15を複
数枚収納した記録紙カセット16が装置本体14のガイド部
13に沿って所定の位置に挿入保持される。給紙の際に押
上レバー18が上方に回動し、紙押圧板17を一端を支点と
して回動させて他端を押上げ、紙押圧板17上に積載した
記録紙15を搬送ベルト９に押圧する。ゲート部材20は記
録紙カセット16の給紙方向下流側端部の片側コーナー部
に記録紙15を案内しながら回動するように設けられてい
るので、積層した記録紙15に持ち上げられる。同時にセ
パレートローラ７が回転し、搬送ベルト９を給紙方向に
駆動するが、記録紙15が複数枚搬送されそうになって
も、ゲート部材20の上部ガイド部20aと前端面ガイド部2
0cとで形成される間隙によって通過可能枚数が決定され
ているので、所定の枚数以下、たとえば３枚以下の記録
紙15だけが搬送される。ここで、記録紙15の通過可能枚
数の設定を１枚としたいところだが、実際には記録紙15
のカールがある場合、前端面ガイド部20cに引っかかり
給紙不能になることがあるため、最大５枚以下を目指し
てガイド部間の間隙を設定している。また、ゲート部材
20の上面ガイド部20aと側端面ガイド部20bのなす角度θ
は鈍角をなすように構成されているので、記録紙15の中
心に向かうほど間隙が広がるように設定されたことにな
り、記録紙15がカールしていても給紙不能になりにく
い。The operation of the thus configured image printer of this embodiment will be described below. First, a recording paper cassette 16 containing a plurality of recording papers 15 is inserted into a guide section of the apparatus body 14.
It is inserted and held at a predetermined position along 13. When the paper is fed, the lifting lever 18 rotates upward, the paper pressing plate 17 is rotated about one end as a fulcrum, and the other end is raised, and the recording paper 15 stacked on the paper pressing plate 17 is transferred to the transport belt 9. Press. Since the gate member 20 is provided at one corner of the downstream end of the recording paper cassette 16 in the paper feeding direction while rotating while guiding the recording paper 15, the gate member 20 is lifted by the stacked recording paper 15. At the same time, the separation roller 7 rotates to drive the conveyance belt 9 in the paper feeding direction. However, even if the recording paper 15 is about to be conveyed, the upper guide portion 20a and the front end guide portion 2
Since the number of sheets that can pass through is determined by the gap formed by 0c, only a predetermined number of recording papers 15 or less, for example, three or less, are conveyed. Here, it is desired to set the number of sheets that can pass through the recording paper 15 to one.
If there is a curl, the sheet may not be able to be fed by being caught by the front end surface guide portion 20c. Therefore, the gap between the guide portions is set so as to aim at a maximum of 5 sheets or less. Also, gate members
The angle θ between the upper surface guide portion 20a and the side end surface guide portion 20b of FIG.
Are formed so as to form an obtuse angle, so that the gap is set to be widened toward the center of the recording paper 15, so that even if the recording paper 15 is curled, it becomes difficult to supply paper.
一方、セパレートローラ７に対し離間していたリバー
スローラ10がリバースローラ保持アングル11の記録紙押
圧方向への回動によって搬送ベルト９を押圧する。ここ
でリバースローラ10はトルクリミッタを備え、給紙方向
に対して逆回転することより、１枚の記録紙15ならばそ
のまま記録紙15を搬送し、２枚以上ならば２枚目以降は
さばいて逆送させ、１枚の記録紙のみを搬送する。On the other hand, the reverse roller 10 separated from the separate roller 7 presses the transport belt 9 by the rotation of the reverse roller holding angle 11 in the recording paper pressing direction. Here, the reverse roller 10 is provided with a torque limiter and rotates in the reverse direction with respect to the paper feeding direction, so that the recording paper 15 is conveyed as it is for one recording paper 15 and the second and subsequent papers are separated for two or more papers. And feed only one sheet of recording paper.
搬送された１枚の記録紙15はガイド板12と切換えガイ
ド６にガイドされキャプスタン４とピンチローラ５の間
を通過して給紙動作の完了となる。以後はキャプスタン
４とピンチローラ５の押圧回転で搬送され、同時に押上
レバー18とリバースローラ10は降下する。また押上レバ
ー18の降下により紙押圧板17と記録紙15を案内している
ゲート部材20も給紙前の状態に戻る。One transported recording sheet 15 is guided by the guide plate 12 and the switching guide 6, passes between the capstan 4 and the pinch roller 5, and the sheet feeding operation is completed. Thereafter, the paper is conveyed by the pressing and rotating of the capstan 4 and the pinch roller 5, and at the same time, the lifting lever 18 and the reverse roller 10 descend. In addition, the gate member 20 that guides the paper pressing plate 17 and the recording paper 15 returns to the state before paper feeding by the lowering of the lifting lever 18.
このとき、搬送ベルト９により搬送され、リバースロ
ーラ10によりさばかれた記録紙15は、記録紙カセット16
の給紙方向下流側の記録紙当接部端面16aに乗り上げる
ことがあるが、搬送ベルト９と記録紙当接部端面16aの
間に、記録紙15の10数枚分の厚みに相当する隙間を設け
ているので、１枚目に搬送される記録紙15aと記録紙当
接部端面16aに乗り上げた記録紙15bが接触しなくなり、
重送を防ぐことが出来る。At this time, the recording paper 15 transported by the transport belt 9 and separated by the reverse roller 10 is transferred to the recording paper cassette 16.
There may be a case where the recording paper abuts on the end face 16a of the recording paper abutting portion on the downstream side in the paper feeding direction. Is provided, the recording paper 15a conveyed to the first sheet and the recording paper 15b riding on the recording paper contact portion end face 16a are not in contact with each other,
Double feed can be prevented.
なお、本実施例では、２軸間に搬送ベルトを張架して
いるが、搬送手段として搬送ローラ２本を用いてもよ
い。In this embodiment, the transport belt is stretched between the two shafts, but two transport rollers may be used as the transport means.
発明の効果 以上のように本発明によれば、記録紙カセットの給紙
方向下流側端部のコーナー部に臨み、記録紙の上面、下
面、側端面、前端面をそれぞれ案内するガイド部を有し
記録紙の押圧動作に連動して回動するように設けられ、
上面ガイド部と側端面ガイド部のなす角度を鈍角に構成
するとともに、上面ガイド部と前端面ガイド部が形成す
る間隙を少なくとも記録紙の厚さ５枚以内とするゲート
部材を設けることによって、確実に１枚目の記録紙のみ
を搬送でき、給紙不能になったり異音が発生したりせ
ず、また、重送を防止でき、品位と信頼性を飛躍的に高
めるという優れた効果を得ることができる。Effect of the Invention As described above, according to the present invention, there is provided a guide portion which faces the corner at the downstream end in the paper feeding direction of the recording paper cassette and guides the upper surface, lower surface, side end surface, and front end surface of the recording paper. It is provided so as to rotate in conjunction with the pressing operation of the recording paper,
By providing an obtuse angle between the upper surface guide portion and the side end surface guide portion, and providing a gate member having a gap formed by the upper surface guide portion and the front end surface guide portion to be at least five sheets of recording paper or less, Can transport only the first sheet of recording paper, prevent the paper from being unable to be fed or generate abnormal noise, prevent double feeding, and achieve the excellent effect of dramatically improving the quality and reliability. be able to.
第１図は本発明の一実施例の画像プリンタの断面図、第
２図は同画像プリンタの要部斜視図、第３図は従来の画
像プリンタの断面図、第４図および第５図はそれぞれ同
従来の画像プリンタの要部断面図である。 ２……プラテン、４……キャプスタン、５……ピンチロ
ーラ、７……セパレートローラ、８……ピックアップロ
ーラ、９……搬送ベルト、10……リバースローラ、11…
…リバースローラ支持アングル、15……記録紙、16……
記録紙カセット、17……紙押圧板、20……ゲート部材、
20a……上面ガイド部、20b……側端面ガイド部、20c…
…前端面ガイド部、20d……下面ガイド部。FIG. 1 is a sectional view of an image printer according to an embodiment of the present invention, FIG. 2 is a perspective view of a main part of the image printer, FIG. 3 is a sectional view of a conventional image printer, and FIGS. It is a principal part sectional view of the same conventional image printer. 2 ... Platen, 4 ... Capstan, 5 ... Pinch roller, 7 ... Separate roller, 8 ... Pickup roller, 9 ... Conveyer belt, 10 ... Reverse roller, 11 ...
… Reverse roller support angle, 15… Recording paper, 16…
Recording paper cassette, 17: paper pressing plate, 20: gate member,
20a: Top guide, 20b: Side end guide, 20c
... front end guide, 20d ... bottom guide.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 外村 哲也 大阪府門真市大字門真1006番地 松下電 器産業株式会社内 (56)参考文献 特開 昭59−163244（ＪＰ，Ａ) 実開 平１−78636（ＪＰ，Ｕ) 実公 昭50−4336（ＪＰ，Ｙ１) (58)調査した分野(Int.Cl.6，ＤＢ名) B65H 3/56────────────────────────────────────────────────── ─── Continuing from the front page (72) Inventor Tetsuya Tomura 1006 Kazuma Kadoma, Kadoma City, Osaka Inside Matsushita Electric Industrial Co., Ltd. (56) References JP-A-59-163244 (JP, A) -78636 (JP, U) Jikken 50-4336 (JP, Y1) (58) Fields investigated (Int. Cl. 6 , DB name) B65H 3/56
Claims (1)
セットと、前記記録紙カセットの上方位置に設けられ
て、収納された前記記録紙が接触したときに前記記録紙
を搬送する搬送ベルトまたはローラと、前記記録紙カセ
ットの下方から前記記録紙を前記搬送ベルトまたはロー
ラに押圧せしめる紙押圧板と、前記搬送ベルトまたはロ
ーラの給紙方向下流側に設けられて、前記搬送ベルトま
たはローラに押圧可能であり、押圧時に前記記録紙の２
枚目以降をさばくように構成されたリバースローラと、
前記記録紙カセットの給紙方向下流側の片側コーナーに
臨み、前記記録紙の給紙方向下流側の片側コーナー上
面、下面、側端面、前端面をそれぞれ案内するガイド部
を有し、前記紙押圧板による押圧動作に連動して前記記
録紙カセットの底面に設けた軸を支軸として回動するよ
うに設け且つ、前記上面ガイド部と前記側端面ガイド部
のなす角度を前記記録紙の側端面から中心に向けて鈍角
に構成するとともに、前記上面ガイド部と前記前端面ガ
イド部が形成する間隙の最小部を少なくとも前記記録紙
の厚さ５枚以内に構成し且つ前記記録紙の側端面から中
心に向けて前記間隙が漸増的に広がるように構成したゲ
ート部材とを設けた画像プリンタ。1. A recording paper cassette which stores thick sheet-like recording paper, and a conveyance which is provided above the recording paper cassette and conveys the recording paper when the stored recording paper comes into contact with the recording paper cassette. A belt or roller, a paper pressing plate for pressing the recording paper against the transport belt or roller from below the recording paper cassette, and a transport belt or roller provided downstream of the transport belt or roller in the paper feeding direction. At the time of pressing.
A reverse roller configured to process the subsequent sheets,
A guide portion that faces one corner on the downstream side in the paper feeding direction of the recording paper cassette and guides an upper surface, a lower surface, a side end surface, and a front end surface of the one corner on the downstream side in the paper feeding direction of the recording paper; The recording paper cassette is provided so as to rotate around a shaft provided on the bottom surface of the recording paper cassette in conjunction with a pressing operation by a plate, and an angle formed between the upper surface guide portion and the side end surface guide portion is a side end surface of the recording paper. And an obtuse angle toward the center, and a minimum portion of a gap formed by the upper surface guide portion and the front end surface guide portion is configured to be at least within a thickness of five sheets of the recording paper and from a side end surface of the recording paper. An image printer provided with a gate member configured such that the gap gradually increases toward the center.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1341544A JP2758051B2 (en) | 1989-12-27 | 1989-12-27 | Image printer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1341544A JP2758051B2 (en) | 1989-12-27 | 1989-12-27 | Image printer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03200648A JPH03200648A (en) | 1991-09-02 |
| JP2758051B2 true JP2758051B2 (en) | 1998-05-25 |
Family
ID=18346894
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1341544A Expired - Lifetime JP2758051B2 (en) | 1989-12-27 | 1989-12-27 | Image printer |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2758051B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5648807A (en) | 1992-09-10 | 1997-07-15 | Seiko Epson Corporation | Ink jet recording apparatus having an antismear sheet deformation discharge system |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS504336U (en) * | 1973-05-09 | 1975-01-17 | ||
| JPS59163244A (en) * | 1983-03-07 | 1984-09-14 | Minolta Camera Co Ltd | Automatic paper feeding device |
| JPS59198230A (en) * | 1984-03-22 | 1984-11-10 | Sharp Corp | Cassette for feeding sheets |
| JPH07110101B2 (en) * | 1986-01-27 | 1995-11-22 | 三菱電機株式会社 | Circuit and circuit breaker control device |
-
1989
- 1989-12-27 JP JP1341544A patent/JP2758051B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH03200648A (en) | 1991-09-02 |
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