JPH04345438A - Recording device - Google Patents
Recording deviceInfo
- Publication number
- JPH04345438A JPH04345438A JP12039091A JP12039091A JPH04345438A JP H04345438 A JPH04345438 A JP H04345438A JP 12039091 A JP12039091 A JP 12039091A JP 12039091 A JP12039091 A JP 12039091A JP H04345438 A JPH04345438 A JP H04345438A
- Authority
- JP
- Japan
- Prior art keywords
- roller
- recording paper
- paper
- paper feed
- recording
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract description 4
- 229910052742 iron Inorganic materials 0.000 abstract description 2
- 239000000463 material Substances 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 4
- 239000004033 plastic Substances 0.000 description 4
- 230000007423 decrease Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000004907 flux Effects 0.000 description 2
- 230000005415 magnetization Effects 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000012840 feeding operation Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 230000037303 wrinkles Effects 0.000 description 1
Landscapes
- Delivering By Means Of Belts And Rollers (AREA)
- Handling Of Cut Paper (AREA)
- Handling Of Continuous Sheets Of Paper (AREA)
- Controlling Sheets Or Webs (AREA)
Abstract
Description
【0001】0001
【産業上の利用分野】本発明は、記録紙を搬送して、像
形成を行う記録装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a recording apparatus that conveys recording paper and forms an image.
【0002】0002
【従来の技術】従来の記録装置においては、モータ等の
駆動源によって、記録紙搬送のためのローラを回転させ
、このローラに圧接させた押圧ローラによって、摩擦力
を発生させ、記録紙を搬送させていた。この押圧ローラ
の圧接はバネによって行っていた。(例えば特開公平
2ー99356号公報)2. Description of the Related Art In conventional recording apparatuses, a drive source such as a motor rotates a roller for conveying the recording paper, and a pressure roller that is in pressure contact with this roller generates frictional force to convey the recording paper. I was letting it happen. This pressure contact of the pressure roller was performed by a spring. (For example,
2-99356)
【0003】0003
【発明が解決しようとする課題】しかしながら、上記の
ようなバネを用いた押圧ローラを備えた装置では記録紙
搬送不良が生ずると回復動作が容易でなかった。However, in an apparatus equipped with a pressing roller using a spring as described above, it is not easy to recover from the occurrence of recording paper conveyance failure.
【0004】すなわち、記録紙搬送不良は多くの場合、
記録紙の蛇行や、記録紙のしわ発生を伴う。記録紙蛇行
が発生すると、特定の方向に偏向された記録紙は紙幅方
向の規制手段によって行き場を失い折れ曲がる。このよ
うな状況が発生すると、記録紙は紙送りローラと押圧ロ
ーラの間で圧接されているため、狭い範囲に押し込めら
れて除去が困難になる。さらに状態が悪化すると記録紙
が破れ除去が特に難しくなる。[0004] In other words, recording paper conveyance defects often occur due to
Accompanied by meandering of the recording paper and wrinkles of the recording paper. When recording paper meandering occurs, the recording paper that has been deflected in a specific direction loses its place and bends due to the regulating means in the paper width direction. When such a situation occurs, since the recording paper is pressed between the paper feed roller and the pressure roller, it is forced into a narrow area and becomes difficult to remove. If the condition worsens, the recording paper may tear and removal becomes particularly difficult.
【0005】本発明はこの問題点を解決しようとするも
ので、記録紙搬送不良の際に、紙搬送部のローラ当接部
からの記録紙の除去が容易な記録装置を提供することで
ある。The present invention aims to solve this problem, and it is an object of the present invention to provide a recording apparatus in which the recording paper can be easily removed from the roller contact portion of the paper conveyance section in the event of recording paper conveyance failure. .
【0006】[0006]
【課題を解決するための手段】本発明の記録装置は、回
転することによって、記録媒体の搬送を行う紙送りロー
ラと、記録媒体を介在させてこの紙送りローラに当接し
、回転可能に支承された押圧ローラとを備え、上記紙送
りローラ、上記押圧ローラの少なくとも一方は、磁石を
内包し、両者は磁気吸引力により相互に吸引される如く
構成されている。[Means for Solving the Problems] The recording device of the present invention includes a paper feed roller that conveys a recording medium by rotating, and a rotatably supported support that contacts the paper feed roller with the recording medium interposed. At least one of the paper feed roller and the pressure roller includes a magnet, and the two are configured to be attracted to each other by magnetic attraction force.
【0007】[0007]
【実施例】以下図面に基づき本発明の実施例を説明する
。DESCRIPTION OF THE PREFERRED EMBODIMENTS Examples of the present invention will be described below with reference to the drawings.
【0008】図1は本発明の一実施例を示すインクジェ
ット記録装置の構成を示す斜視図である。インクジェッ
トヘッド1は、ガイド軸4、ガイド板5によって案内さ
れつつ記録紙6上を走査する。走査はインクジェットヘ
ッド走査モータ3によって駆動される走査機構2で行わ
れる。記録紙6は紙送りローラ7に巻き回され、第1の
押圧ローラ8、第2の押圧ローラ9によって、押圧され
ている。記録紙6は上記の押圧力により摩擦力を受けて
、紙搬送ローラ7のAで示す回転により、Bの方向に搬
送される。紙送りローラ7はローラ駆動モータ12によ
り駆動される。紙搬送部の動作を監視するため第1のセ
ンサー10、第2のセンサー11が設けられ、記録紙の
有無を検出する。すなわち、記録紙の有無による光反射
率の差により、記録紙の有無を検出し電気信号を出力す
る。FIG. 1 is a perspective view showing the structure of an inkjet recording apparatus according to an embodiment of the present invention. The inkjet head 1 scans over the recording paper 6 while being guided by a guide shaft 4 and a guide plate 5. Scanning is performed by a scanning mechanism 2 driven by an inkjet head scanning motor 3. The recording paper 6 is wound around a paper feed roller 7 and is pressed by a first pressure roller 8 and a second pressure roller 9. The recording paper 6 is subjected to frictional force due to the above-mentioned pressing force, and is conveyed in the direction of B by the rotation of the paper conveyance roller 7 as indicated by A. The paper feed roller 7 is driven by a roller drive motor 12. A first sensor 10 and a second sensor 11 are provided to monitor the operation of the paper transport section, and detect the presence or absence of recording paper. That is, the presence or absence of recording paper is detected based on the difference in light reflectance depending on the presence or absence of recording paper, and an electrical signal is output.
【0009】紙送りローラ7は、鉄材からなる磁性を有
する磁性素管20の周囲にゴムからなる弾性層21を被
覆したものである。[0009] The paper feed roller 7 is constructed by covering a magnetic tube 20 made of iron with an elastic layer 21 made of rubber.
【0010】第1、第2の押圧ローラ8、9はさらに詳
細を同図中に示すように、軸31の周囲に永久磁石32
を有し、ガイド部33により、案内されており、回転可
能、紙送りローラ7に向けて移動可能であり、常時紙送
りローラ7に向けて吸引力を受けて当接する。永久磁石
32は磁化軸が軸31の方向に一致するように着磁され
ている。The first and second pressing rollers 8 and 9 are equipped with a permanent magnet 32 around a shaft 31, as shown in more detail in the figure.
It is guided by a guide portion 33, is rotatable and movable toward the paper feed roller 7, and is always in contact with the paper feed roller 7 under suction force. The permanent magnet 32 is magnetized so that its magnetization axis coincides with the direction of the axis 31.
【0011】インクジェットヘッド1は紙送り方向に配
置された複数のノズルを有し、記録紙6上を幅方向に走
査しながら選択的にインクを吐出し画像を形成する。The inkjet head 1 has a plurality of nozzles arranged in the paper feeding direction, and selectively discharges ink to form an image while scanning the recording paper 6 in the width direction.
【0012】次に動作を説明する。Next, the operation will be explained.
【0013】記録紙は手差し動作によって、紙送りロー
ラ7と第1の押圧ローラ8との当接部に送り込まれて待
機する。印字動作に同期して図2のように紙搬送動作が
行われる。すなわち「記録紙供給信号」により、紙送り
ローラ7が回転し、所定時間後に第1のセンサー10、
第2のセンサー11に記録紙6の先頭が到達する。さら
に所定時間後記録紙6の後端は第1のセンサー10、第
2のセンサー11を通過する。これに伴いセンサの出力
は「紙無し」「紙有り」「紙無し」のように順次変化す
る。記録装置の制御部ではこれらの状態を監視し、所定
時間径過後に正常な出力変化の検出されない場合紙搬送
不良と判断して、動作を停止する。By manual feeding, the recording paper is fed into the abutment area between the paper feed roller 7 and the first pressure roller 8 and is put on standby. A paper conveyance operation is performed as shown in FIG. 2 in synchronization with the printing operation. That is, the paper feed roller 7 rotates in response to the "recording paper supply signal", and after a predetermined time, the first sensor 10,
The leading edge of the recording paper 6 reaches the second sensor 11 . Further, after a predetermined period of time, the rear end of the recording paper 6 passes through the first sensor 10 and the second sensor 11. Accordingly, the output of the sensor changes sequentially such as "no paper", "paper present", and "no paper". The control unit of the recording apparatus monitors these conditions, and if a normal change in output is not detected after a predetermined period of time has elapsed, it determines that there is a paper conveyance failure and stops the operation.
【0014】本実施例の押圧ローラ7の構成によれば紙
送り不良が生じた場合の回復処理が容易に行われる。こ
れを図3を用いて説明する。図中には紙送りローラ7、
これに当接する押圧ローラ8との軸間距離をxとし、押
圧力のxによる変化を示している。従来技術の構成によ
り、押圧ローラ8をバネ41によって押圧する場合の押
圧力は破線Cで示すようにxとともに増加する。一方本
実施例の構成では、押圧ローラ8が紙送りローラから離
れるにしたがって、永久磁石32からの漏洩磁束が減少
するために、図中に実線Dで示すようにxとともに減少
する。このため記録紙6が搬送中に経路内で詰まった場
合記録紙6によって押圧ローラ8が遠ざかるにしたがっ
て押圧力が減少する。従って、記録紙が強固に挟み込ま
れたり除去するのに困難な状態になることが無い。また
押圧ローラが軸両端にバネで押される場合、移動距離を
大きくとることができないが、本実施例の構成では、押
圧ローラ8はガイド部33で移動可能にガイドされてお
り、紙送りローラ7との軸間距離の可動範囲を大きくと
ることができる。このため、記録紙が大きく折れ曲がっ
た場合でも、押圧ローラ8は大きく後退して記録紙を圧
迫することが無い。また記録紙の除去動作も容易に行え
る。さらに組立に際してもバネの取り付け等が不要で組
立が容易であるという効果も有する。第2の実施例を図
4に示す。本図には押圧ローラ8の構成のみ示す。軸3
1の周囲に、円板状永久磁石32、磁性材からなるヨー
ク板42を積層して一体化したものである。磁気効率が
高く有効に磁石のエネルギーを利用することができ、強
力な押圧力を得ることができる。動作その他は先の実施
例と同様であり説明は省略する。According to the configuration of the pressing roller 7 of this embodiment, recovery processing can be easily performed when a paper feeding failure occurs. This will be explained using FIG. 3. In the figure, paper feed roller 7,
The distance between the axes of the pressing roller 8 that comes into contact with this is defined as x, and the change in pressing force due to x is shown. With the configuration of the prior art, the pressing force when the pressing roller 8 is pressed by the spring 41 increases with x as shown by the broken line C. On the other hand, in the configuration of this embodiment, as the pressure roller 8 moves away from the paper feed roller, the leakage magnetic flux from the permanent magnet 32 decreases, so that it decreases with x as shown by the solid line D in the figure. Therefore, if the recording paper 6 becomes jammed in the path during conveyance, the pressing force decreases as the recording paper 6 moves away from the pressure roller 8. Therefore, there is no possibility that the recording paper will be tightly pinched or that it will be difficult to remove it. Further, when the pressure roller is pushed by springs at both ends of the shaft, it is not possible to move a large distance, but in the configuration of this embodiment, the pressure roller 8 is movably guided by the guide section 33, and the paper feed roller 7 The range of movement of the distance between the axes can be widened. Therefore, even if the recording paper is bent significantly, the pressing roller 8 will not move back significantly and press the recording paper. Also, the operation of removing the recording paper can be easily performed. Furthermore, it also has the advantage that it is easy to assemble since there is no need to attach springs or the like. A second embodiment is shown in FIG. In this figure, only the configuration of the pressure roller 8 is shown. Axis 3
1, a disk-shaped permanent magnet 32 and a yoke plate 42 made of a magnetic material are laminated and integrated. It has high magnetic efficiency and can effectively utilize the energy of the magnet, making it possible to obtain a strong pressing force. The operation and other operations are the same as those in the previous embodiment, and the explanation will be omitted.
【0015】第3の実施例を図5に示す。押圧ローラ8
の構成のみ示す。軸31の周囲に、円筒状の永久磁石3
2を一体化して構成されている。永久磁石にゴム磁石を
用いることによって、当接ニップを大きくとり記録紙と
紙送りローラの接触面積を大きくして安定した紙送り性
能を得ることができる。A third embodiment is shown in FIG. Press roller 8
Only the configuration is shown. A cylindrical permanent magnet 3 is placed around the shaft 31.
It is constructed by integrating 2. By using a rubber magnet as the permanent magnet, it is possible to increase the contact nip and increase the contact area between the recording paper and the paper feed roller, thereby achieving stable paper feed performance.
【0016】第4の実施例を図6、図7に示す。軸71
と板状永久磁石75が一体化されている。低摩擦のプラ
スチックブッシュ72とプラスチックパイプ73が一体
化され軸71を支持する構成である。永久磁石75は着
磁方向がEで示す板厚方向に一致している。永久磁石7
5の磁極からの磁束によって紙送りローラ7との間に吸
引力を生じ、プラスチックブッシュ72を介してパイプ
73を押圧する。パイプ73は紙送りローラ7と同一速
度で回転し、永久磁石75と軸71は回転しない。プラ
スチックブッシュ72の外周面が軸71と摺動する。永
久磁石75は常に磁極面を紙送りローラ7の方向に向け
て静止している。第6の実施例を図8に示す。本図はワ
イヤドットプリンタの場合であって、ヘッド1が紙面の
厚さ方向に走査し、記録紙6上に記録する。記録紙6は
プラテン81に支持され、図示しない駆動源により駆動
される第1、第2の紙送りローラ82、83と第1、第
2の押圧ローラ84、85により矢印Fの方向に搬送さ
れる。第1、第2の紙送りローラ82、83は金属軸の
周囲に摩擦係数の高い弾性体を配した物であり、高い摩
擦力により紙送り力を発生する。第1、第2の押圧ロー
ラ84、85としては第1ないし第5の実施例に示した
構成の押圧ローラを用いることができる。紙詰まりの回
復復旧動作に際して、第1、第2の押圧ローラ84、8
5を大きく後退させた場合でも、押圧ローラ84、85
は本実施例の構成では、重力の作用で当接位置まで移動
するため、押圧ローラの可動範囲を大きく設定すること
ができる。またバネで押圧軸両端部を加圧する構成と違
って、押圧ローラ自体が高い曲げ剛性を持つ必要がない
。従って、細径の押圧ローラを用いることができヘッド
1と近接して押圧ローラ84、85を設けることができ
る。そのため、記録紙の余白部分を小さくし、記録紙の
前端、後端の近くまで印字でき記録紙面を有効に利用で
きるという効果を有する。A fourth embodiment is shown in FIGS. 6 and 7. axis 71
and a plate-shaped permanent magnet 75 are integrated. A low-friction plastic bush 72 and a plastic pipe 73 are integrated to support the shaft 71. The magnetization direction of the permanent magnet 75 coincides with the plate thickness direction indicated by E. Permanent magnet 7
The magnetic flux from the magnetic poles 5 generates an attractive force with the paper feed roller 7, and presses the pipe 73 through the plastic bush 72. The pipe 73 rotates at the same speed as the paper feed roller 7, and the permanent magnet 75 and shaft 71 do not rotate. The outer peripheral surface of the plastic bush 72 slides on the shaft 71. The permanent magnet 75 is always stationary with its magnetic pole face facing the paper feed roller 7. A sixth embodiment is shown in FIG. This figure shows the case of a wire dot printer, in which the head 1 scans in the thickness direction of the paper surface and records on the recording paper 6. The recording paper 6 is supported by a platen 81 and is conveyed in the direction of arrow F by first and second paper feed rollers 82 and 83 and first and second pressure rollers 84 and 85, which are driven by a drive source (not shown). Ru. The first and second paper feed rollers 82 and 83 are made by disposing an elastic body with a high coefficient of friction around a metal shaft, and generate a paper feed force due to the high frictional force. As the first and second pressure rollers 84 and 85, pressure rollers having the configurations shown in the first to fifth embodiments can be used. During the paper jam recovery operation, the first and second pressure rollers 84, 8
Even when the pressure rollers 84 and 85 are moved back a lot, the pressure rollers 84 and 85
In the configuration of this embodiment, since the pressure roller moves to the contact position by the action of gravity, the movable range of the pressure roller can be set to be large. Also, unlike the configuration in which both ends of the pressing shaft are pressed by a spring, the pressing roller itself does not need to have high bending rigidity. Therefore, a pressure roller with a small diameter can be used, and the pressure rollers 84 and 85 can be provided close to the head 1. Therefore, it is possible to reduce the margin area of the recording paper and print close to the front and rear edges of the recording paper, thereby effectively utilizing the recording paper surface.
【0017】[0017]
【発明の効果】本発明の記録装置は、押圧ローラ、紙送
りローラは少なくとも一方に磁石を内蔵し、磁性体を内
蔵し、両者の間の磁気力で記録紙を押圧するごとく構成
されている。このため、両ローラ間に作用する吸引力は
距離とともに減少する特性を有し、紙送り動作不良時に
、記録紙を強固に挟み込むことがなく、また挟み込まれ
た記録紙の除去も容易であるという効果を有する。また
両ローラ間で直接給引力が生ずるため、外部から力を加
える必要がない。そのため細い径の押圧ローラを用いる
ことができヘッドに近接して配置することにより、記録
紙上に余白部を少なく印字できるという効果も有する。
さらに組立が容易であるという効果も有する。[Effects of the Invention] In the recording device of the present invention, at least one of the pressing roller and the paper feed roller has a built-in magnet and a magnetic body, and the recording paper is pressed by the magnetic force between them. . For this reason, the suction force that acts between both rollers has the characteristic of decreasing with distance, so that the recording paper will not be tightly pinched when the paper feed malfunctions, and it is easy to remove the jammed recording paper. have an effect. In addition, since a suction force is generated directly between both rollers, there is no need to apply external force. Therefore, it is possible to use a pressure roller with a small diameter, and by arranging it close to the head, there is also the effect that printing can be performed with less blank space on the recording paper. Furthermore, it also has the advantage of being easy to assemble.
【図1】本発明の第1実施例の記録装置の構成を示す斜
視図である。FIG. 1 is a perspective view showing the configuration of a recording apparatus according to a first embodiment of the present invention.
【図2】本発明の記録装置の紙送り動作を示す、ブロッ
ク図である。FIG. 2 is a block diagram showing a paper feeding operation of the recording apparatus of the present invention.
【図3】本発明の記録装置の紙送りローラと押圧ローラ
押圧力とローラ間距離の関係を示す図である。FIG. 3 is a diagram showing the relationship between the paper feed roller, the pressure roller pressing force, and the distance between the rollers of the recording apparatus of the present invention.
【図4】本発明の第2実施例を示す押圧ローラの構成を
示す図である。FIG. 4 is a diagram showing the configuration of a pressure roller showing a second embodiment of the present invention.
【図5】本発明の第3実施例を示す押圧ローラの構成を
示す図である。FIG. 5 is a diagram showing the configuration of a pressure roller showing a third embodiment of the present invention.
【図6】本発明の第4実施例を示す押圧ローラの構成を
示す斜視図である。FIG. 6 is a perspective view showing the configuration of a pressing roller according to a fourth embodiment of the present invention.
【図7】本発明の第4実施例を示す押圧ローラの構成を
示す斜断面図である。FIG. 7 is a perspective cross-sectional view showing the configuration of a pressing roller according to a fourth embodiment of the present invention.
【図8】本発明の第5実施例の記録装置の構成を示す断
面図である。FIG. 8 is a sectional view showing the configuration of a recording apparatus according to a fifth embodiment of the present invention.
7、82、83 紙送りローラ8、9、84
、85 押圧ローラ
31、71 軸7, 82, 83 Paper feed roller 8, 9, 84
, 85 press roller 31, 71 shaft
Claims (1)
送を行う紙送りローラと、記録媒体を介在させてこの紙
送りローラに当接し、回転可能に支承された押圧ローラ
とを備え、上記紙送りローラ、上記押圧ローラの少なく
とも一方は、磁石を内包し、両者は磁気吸引力により相
互に吸引される如く構成されたことを特徴とする記録装
置。1. A paper feed roller that rotates to convey a recording medium, and a pressure roller that is rotatably supported and abuts on the paper feed roller with the recording medium interposed therebetween; A recording apparatus characterized in that at least one of the roller and the pressure roller includes a magnet, and the two are configured to be attracted to each other by magnetic attraction force.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12039091A JPH04345438A (en) | 1991-05-24 | 1991-05-24 | Recording device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12039091A JPH04345438A (en) | 1991-05-24 | 1991-05-24 | Recording device |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH04345438A true JPH04345438A (en) | 1992-12-01 |
Family
ID=14785024
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP12039091A Pending JPH04345438A (en) | 1991-05-24 | 1991-05-24 | Recording device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH04345438A (en) |
-
1991
- 1991-05-24 JP JP12039091A patent/JPH04345438A/en active Pending
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