JP2994392B2 - Recording device - Google Patents
Recording deviceInfo
- Publication number
- JP2994392B2 JP2994392B2 JP63254208A JP25420888A JP2994392B2 JP 2994392 B2 JP2994392 B2 JP 2994392B2 JP 63254208 A JP63254208 A JP 63254208A JP 25420888 A JP25420888 A JP 25420888A JP 2994392 B2 JP2994392 B2 JP 2994392B2
- Authority
- JP
- Japan
- Prior art keywords
- recording
- guide plate
- recording medium
- recording head
- paper
- 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
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J13/00—Devices or arrangements of selective printing mechanisms, e.g. ink-jet printers or thermal printers, specially adapted for supporting or handling copy material in short lengths, e.g. sheets
- B41J13/02—Rollers
Description
【発明の詳細な説明】 ［産業上の利用分野］ 本発明は、記録ヘッドを用いてシート状の記録媒体に
文字・画像の情報を記録する記録装置に関し、特に記録
媒体を搬送するシート送り機構に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a recording apparatus that records character / image information on a sheet-shaped recording medium using a recording head, and in particular, a sheet feed mechanism that conveys the recording medium. About.
［従来の技術］ 従来のこの種の記録装置では、一般に第３図に示すよ
うに、大径のプラテンローラ７と、このプラテンローラ
７とで記録紙21を挟持して搬送する小径のピンチローラ
81とによりシート送り機構を構成していた。[Prior Art] In a conventional recording apparatus of this type, as shown in FIG. 3, a large-diameter platen roller 7 and a small-diameter pinch roller for nipping and conveying a recording paper 21 with the platen roller 7 are generally used.
81 constituted a sheet feeding mechanism.
［発明が解決しようとする課題］ しかながら、上述のような従来例では、プラテンロー
ラが記録ヘッドに対向する位置に配設されているので、
ワイヤドットプリンタやノズル数の少ないインクジェッ
トプリンタ（液体噴射記録装置）等では良いが、ノズル
数の多いインクジェットプリンタ等ではプラテンローラ
の径を大きくしなければならず、装置が大型化する等の
問題があった。[Problem to be Solved by the Invention] However, in the above-described conventional example, since the platen roller is disposed at a position facing the recording head,
A wire dot printer or an ink jet printer (liquid jet recording device) with a small number of nozzles is good, but an ink jet printer with a large number of nozzles has a problem in that the diameter of the platen roller must be increased, and the device becomes large. there were.
そこで、ノズル数の多いインクジェットプリンタ等で
は、例えば第４図に示すように、紙送りローラ（フリク
ションローラ）７とピンチローラ81の後方に平板状プラ
テン33を記録ヘッド51と対向して配設する配置構成（レ
イアウト）が採用されていた。この場合、後端の印字保
証領域を広くし、後端余白を小さくするためには、紙送
りローラ７の径が小さいほど良い。しかし、その紙送り
ローラ７の径が小さいと、当然記録紙21に対する搬送力
も小さくなるので、精度の良い記録が行なえないという
問題が生ずる。Therefore, in an ink jet printer or the like having a large number of nozzles, for example, as shown in FIG. 4, a flat platen 33 is disposed behind a paper feed roller (friction roller) 7 and a pinch roller 81 so as to face the recording head 51. An arrangement configuration (layout) was employed. In this case, the smaller the diameter of the paper feed roller 7 is, the better in order to increase the print guarantee area at the rear end and reduce the margin at the rear end. However, if the diameter of the paper feed roller 7 is small, the conveying force to the recording paper 21 is naturally small, and there is a problem that accurate recording cannot be performed.
また、記録ヘッド51での記録（印字）の直前まで弾性
部材で形成したガイド板（平板状プラテン）33で記録紙
21を案内しているが、これだけで記録紙21の姿勢を記録
ヘッド51の記録位置で常に適切に保つのは困難であっ
た。特に、インクジェットプリンタの場合は、記録ヘッ
ドのノズルと記録紙間の距離を常に一定に厳密に保守す
る必要があり、記録紙の姿勢が変動してノズルとの距離
が変わると記録特性が変わり、また記録紙の紙粉がノズ
ルに付着する等により、印字品質が劣化するという欠点
があった。A guide plate (flat platen) 33 made of an elastic member immediately before recording (printing) by the recording head 51 is performed by a recording paper.
However, it is difficult to always keep the posture of the recording paper 21 properly at the recording position of the recording head 51. In particular, in the case of an ink-jet printer, it is necessary to always maintain the distance between the nozzles of the recording head and the recording paper strictly and strictly. Further, there is a disadvantage that the printing quality is deteriorated due to the paper powder of the recording paper adhering to the nozzles.
本発明の目的は、上述のような欠点を除去し、シート
状の記録媒体搬送が安定し、記録ヘッドとシート状の記
録媒体間の距離も安定して厳密に保たれ、ひいては高品
位の記録が得られる記録装置を提供することにある。SUMMARY OF THE INVENTION An object of the present invention is to eliminate the above-mentioned drawbacks, stabilize the conveyance of a sheet-shaped recording medium, stably maintain the distance between a recording head and a sheet-shaped recording medium, and thereby achieve high-quality recording. Is to provide a recording device that can obtain the above.
［課題を解決するための手段］ 上記目的を達成するため、本発明の記録装置は、記録
ヘッドに対向する位置において、記録媒体の記録ヘッド
側とは反対側の面を案内する案内板と、前記記録ヘッド
の上流位置に配置され、前記記録媒体が前記案内板の面
に押し付けられるように、記録媒体を前記案内板に向け
て偏向させて給送する紙送りローラとピンチローラとを
有し、前記紙送りローラと前記ピンチローラの接触点は
前記案内板より遠ざかるオフセット位置に設定され、記
録媒体の前記記録ヘッド側の面と接触する前記ピンチロ
ーラは、記録媒体を前記案内板に押し付ける方向に給送
するために、前記記録ヘッド側に傾けて配置されている
ことを特徴とする。[Means for Solving the Problems] In order to achieve the above object, a recording apparatus of the present invention includes a guide plate for guiding a surface of a recording medium opposite to a recording head side at a position facing the recording head; A paper feed roller and a pinch roller are disposed at an upstream position of the recording head and deflect and feed the recording medium toward the guide plate so that the recording medium is pressed against the surface of the guide plate. The contact point between the paper feed roller and the pinch roller is set at an offset position away from the guide plate, and the pinch roller that contacts the surface of the recording medium on the recording head side presses the recording medium against the guide plate. In order to feed the recording paper to the recording head, the recording medium is inclined to the recording head side.
ここで、好ましくは、前記記録ヘッドは、熱エネルギ
ーを利用して形成した記録液の液滴によって前記記録媒
体に記録する手段を備えているとすることができる。Here, preferably, the recording head may include means for recording on the recording medium by droplets of a recording liquid formed using thermal energy.
［作 用］ 本発明は、上記構成により、ピンチローラを記録ヘッ
ド側に傾けて配置することによって、記録媒体を案内板
に押し付ける方向に給送できるように構成しているの
で、記録ヘッドと紙間の距離を厳密に一定に保つことが
でき、記録媒体の送り安定が得られその結果印字品位の
向上が達せられるとともに、キャリッジガイドに相当す
るガイドが不要となるので、装置構成の簡略化が図れ、
かつそのガイドとシート（記録媒体）が擦れ合うことに
よる毛羽立ち、ジャム発生等の不都合が生じない。[Operation] According to the present invention, the recording medium can be fed in a direction of pressing the guide plate against the guide plate by arranging the pinch roller at an angle to the recording head side. The distance between them can be kept strictly constant, the feeding of the recording medium can be stabilized, and as a result the print quality can be improved.In addition, a guide equivalent to a carriage guide is not required, so that the apparatus configuration can be simplified. Plan,
In addition, inconveniences such as fluffing and occurrence of jam due to friction between the guide and the sheet (recording medium) do not occur.
［実施例］ 以下、図面を参照して本発明の実施例を詳細に説明す
る。[Example] Hereinafter, an example of the present invention will be described in detail with reference to the drawings.
第１図は本発明の一実施例のシート送り機構の構成を
示す。本図において、９は記録ヘッド51に対して一定間
隔を有して平行に配置され、記録紙21を一定方向に案内
するガイド板であり、このガイド板９の上流に記録紙21
を記録ヘッド51へ送り込む搬送用の紙送りローラ７と、
記録紙21を紙送りローラ７とにより挟持するピンチロー
ラ81とを配置する。FIG. 1 shows the configuration of a sheet feeding mechanism according to one embodiment of the present invention. In the figure, reference numeral 9 denotes a guide plate which is arranged in parallel with the recording head 51 at a fixed interval and guides the recording paper 21 in a fixed direction.
A paper feed roller 7 for transporting the paper to the recording head 51,
A pinch roller 81 for sandwiching the recording paper 21 with the paper feed roller 7 is arranged.
また、このピンチローラ81は記録紙21の送り方向（ガ
イド板９の延長方向）に対する紙送りローラ７の中心を
通る法線Ｘ−Ｘに対して、所定角度θ゜だけガイド板10
側に偏心して取付け、かつピンチローラ81と紙送りロー
ラ７の接触点の位置をガイト板９から所定距離ｔだけ遠
ざけるように設置する。Further, the pinch roller 81 moves the guide plate 10 by a predetermined angle θ ゜ with respect to a normal X-X passing through the center of the paper feed roller 7 with respect to the feed direction of the recording paper 21 (the extension direction of the guide plate 9).
The pinch roller 81 and the paper feed roller 7 are installed such that the contact point between the pinch roller 81 and the paper feed roller 7 is separated from the guide plate 9 by a predetermined distance t.
以上の構成において、紙送りローラ７の上流側に位置
する図示しない給紙装置から送られた記録紙21は、紙送
りローラ７の周面に沿って上昇し、次にピンチローラ81
によりガイド板９上に押付けられる方向に偏向されて送
り出される。In the above configuration, the recording paper 21 sent from a paper feeding device (not shown) located on the upstream side of the paper feed roller 7 rises along the peripheral surface of the paper feed roller 7, and then moves to the pinch roller 81.
Is deflected in the direction pressed against the guide plate 9 and sent out.
すなわち、ピンチローラ81がガイド板９および記録ヘ
ッド51側に所定角度θ゜傾いて配置されているので、記
録紙21を記録ヘッド51のノズル面に対して平行に送り出
さず、下方向に、ガイド板９に押付ける方向に送り出
す。記録ヘッドは例えば熱エネルギーを利用して形成さ
れた液滴により記録紙に記録を行う。更に、紙送りロー
ラ７とピンチローラ81の接触点をガイド板１に対して所
定距離ｔだけ遠ざける方向にオフセットしているので、
ガイド板９に押付けられた記録紙21はガイド板９により
記録ヘッド51と平行に案内されて搬送される。That is, since the pinch roller 81 is arranged at a predetermined angle θ ゜ on the guide plate 9 and the recording head 51 side, the recording paper 21 is not sent out in parallel with the nozzle surface of the recording head 51, but is guided downward. It is sent out in the direction pressed against the plate 9. The recording head performs recording on the recording paper using, for example, droplets formed using thermal energy. Further, since the contact point between the paper feed roller 7 and the pinch roller 81 is offset in a direction away from the guide plate 1 by a predetermined distance t,
The recording paper 21 pressed against the guide plate 9 is conveyed while being guided by the guide plate 9 in parallel with the recording head 51.
このように、記録紙21はガイド板９に押付けられた状
態で密着して案内され、記録ヘッド51の位置で文字・画
像が記録される。従って、記録紙21の搬送姿勢が安定
し、ガイド板９上の記録紙21と記録ヘッド51の間は常に
平行に一定の距離に厳密に保たれ、また紙粉の記録ヘッ
ド51への付着のおそれもないので、高品位の印字記録が
安定し得られる。As described above, the recording paper 21 is closely contacted and guided while being pressed against the guide plate 9, and characters and images are recorded at the position of the recording head 51. Accordingly, the conveying posture of the recording paper 21 is stabilized, the space between the recording paper 21 on the guide plate 9 and the recording head 51 is always kept strictly in parallel and at a fixed distance, and the adhesion of paper dust to the recording head 51 is prevented. Since there is no fear, high-quality print records can be stably obtained.
なお、図示いていないが、薄い板状の弾性部材で記録
紙21をガイド板９に更に押圧するように構成すれば、記
録紙21の搬送は更に安定する。Although not shown, if the recording paper 21 is further pressed against the guide plate 9 by a thin plate-like elastic member, the conveyance of the recording paper 21 is further stabilized.
第２図は第１図のシート送り機構をインクジェット記
録装置のような記録装置に配設した場合の一例を示す。
第２図に示すように、紙カセットの圧板61上に収納され
た記録紙（カット後）は、紙送りローラ７とピンチロー
ラ81を通って記録ヘッド51に搬送され、熱板11を通って
排紙ローラ12,13により排紙トレイ1010上へ排出され
る。FIG. 2 shows an example in which the sheet feeding mechanism of FIG. 1 is provided in a recording device such as an ink jet recording device.
As shown in FIG. 2, the recording paper (after cutting) stored on the pressure plate 61 of the paper cassette is conveyed to the recording head 51 through the paper feed roller 7 and the pinch roller 81, and passes through the hot plate 11 The paper is discharged onto the paper discharge tray 1010 by the paper discharge rollers 12 and 13.
上述の本発明の実施例では、シート状の記録媒体（記
録紙）を記録ヘッド位置の案内板（ガイド板）上に偏向
させて送るように、シート送りローラ対（紙送りローラ
等）を配設したので、以下のような効果が得られる。In the above-described embodiment of the present invention, a pair of sheet feed rollers (paper feed rollers, etc.) are arranged so that a sheet-shaped recording medium (recording paper) is deflected onto a guide plate (guide plate) at a recording head position and fed. As a result, the following effects can be obtained.
記録媒体の浮きを無くして案内板上に密着させること
ができるので、記録ヘッドに記録媒体が接触することに
よるミスプリントを解消することができる。Since the recording medium can be brought into close contact with the guide plate without lifting, misprinting due to the recording medium coming into contact with the recording head can be eliminated.
大径のシート送りローラに記録媒体を巻付けて搬送す
ることになるので、小径のピンチローラであるにもかか
わらず、十分なフリクションがとれ、正確な記録媒体の
送りが可能となった。Since the recording medium is wound around the large-diameter sheet feed roller and conveyed, sufficient friction can be obtained despite the small-diameter pinch roller, and the recording medium can be fed accurately.
小径のピンチローラの採用が可能となったので、ピン
チローラとシート送りローラを記録ヘッドに更に近づけ
ることができ、記録媒体の後端余白を小さくすることが
できる。Since the use of a small-diameter pinch roller becomes possible, the pinch roller and the sheet feed roller can be brought closer to the recording head, and the trailing margin of the recording medium can be reduced.
これらにより、高品位の記録が安定して得られる。As a result, high-quality recording can be stably obtained.
［発明の効果］ 以上説明したように、本発明によれば、ピンチローラ
を記録ヘッド側に傾けて配置することによって、記録媒
体を案内板に押し付ける方向に給送できるように構成し
ているので、記録ヘッドと紙間の距離を厳密に一定に保
つことができ、記録媒体の送り安定が得られその結果印
字品位の向上が達せられるとともに、キャリッジガイド
に相当するガイドが不要となるので、装置構成の簡略化
が図れ、かつそのガイドとシート（記録媒体）が擦れ合
うことによる毛羽立ち、ジャム発生等の不都合が生じな
いという効果が得られる。[Effects of the Invention] As described above, according to the present invention, the recording medium can be fed in the direction in which the recording medium is pressed against the guide plate by arranging the pinch roller at an angle to the recording head. In addition, the distance between the recording head and the paper can be kept strictly constant, the recording medium can be fed stably, and as a result, the print quality can be improved, and a guide equivalent to a carriage guide is not required. The structure can be simplified, and the guide and the sheet (recording medium) are rubbed against each other.
第１図は本発明の一実施例のシート送り機構の構成を示
す断面図、 第２図は第１図のシート送り機構を記録装置に配設した
一例を示す断面図、 第３図および第４図は従来装置の構成例を示す断面図で
ある。 ７……紙送りローラ（シート送りローラ）、 ９……ガイド板（案内板）、 21……記録紙（シート状の記録媒体）、 51……記録ヘッド、 81……ピンチローラ（シート送りローラ）。FIG. 1 is a cross-sectional view showing a configuration of a sheet feeding mechanism according to an embodiment of the present invention. FIG. 2 is a cross-sectional view showing an example in which the sheet feeding mechanism of FIG. 1 is provided in a recording apparatus. FIG. 4 is a sectional view showing a configuration example of a conventional device. 7: paper feed roller (sheet feed roller), 9: guide plate (guide plate), 21: recording paper (sheet-like recording medium), 51: recording head, 81: pinch roller (sheet feed roller) ).
───────────────────────────────────────────────────── フロントページの続き (72)発明者 井上 博行 東京都大田区下丸子３丁目30番２号 キ ヤノン株式会社内 (56)参考文献 特開 平１−139286（ＪＰ，Ａ) 特開 昭60−21276（ＪＰ，Ａ) 特開 昭63−239073（ＪＰ，Ａ) 実開 昭63−854（ＪＰ，Ｕ) 実開 昭57−6559（ＪＰ，Ｕ) 特公 昭63−84958（ＪＰ，Ｂ２) 米国特許4491854（ＵＳ，Ａ) ────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Hiroyuki Inoue 3-30-2 Shimomaruko, Ota-ku, Tokyo Inside Canon Inc. (56) References JP-A-1-139286 (JP, A) JP-A-60 -21276 (JP, A) JP-A-63-239073 (JP, A) JP-A-63-854 (JP, U) JP-A-57-6559 (JP, U) JP-B-63-84958 (JP, B2) ) US Patent 4,491,854 (US, A)
Claims (2)
媒体の記録ヘッド側とは反対側の面を案内する案内板
と、 前記記録ヘッドの上流位置に配置され、前記記録媒体が
前記案内板の面に押し付けられるように、記録媒体を前
記案内板に向けて偏向させて給送する紙送りローラとピ
ンチローラとを有し、 前記紙送りローラと前記ピンチローラの接触点は前記案
内板より遠ざかるオフセット位置に設定され、 記録媒体の前記記録ヘッド側の面と接触する前記ピンチ
ローラは、記録媒体を前記案内板に押し付ける方向に給
送するために、前記記録ヘッド側に傾けて配置されてい
ることを特徴とする記録装置。A guide plate for guiding a surface of the recording medium opposite to the recording head at a position facing the recording head; and a guide plate disposed at an upstream position of the recording head, wherein the recording medium is provided on the guide plate. A paper feed roller and a pinch roller for deflecting and feeding the recording medium toward the guide plate so as to be pressed against the surface, and a contact point between the paper feed roller and the pinch roller being farther from the guide plate The pinch roller, which is set at an offset position and is in contact with the surface of the recording medium on the recording head side, is arranged inclined to the recording head side in order to feed the recording medium in a direction of pressing the recording medium against the guide plate. A recording device, characterized in that:
て形成した記録液の液滴によって前記記録媒体に記録す
る手段を備えていることを特徴とする請求項１に記載の
記録装置。2. A recording apparatus according to claim 1, wherein said recording head includes means for recording on said recording medium by droplets of a recording liquid formed using thermal energy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63254208A JP2994392B2 (en) | 1988-10-07 | 1988-10-07 | Recording device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63254208A JP2994392B2 (en) | 1988-10-07 | 1988-10-07 | Recording device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0299369A JPH0299369A (en) | 1990-04-11 |
| JP2994392B2 true JP2994392B2 (en) | 1999-12-27 |
Family
ID=17261758
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63254208A Expired - Lifetime JP2994392B2 (en) | 1988-10-07 | 1988-10-07 | Recording device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2994392B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012045846A (en) * | 2010-08-27 | 2012-03-08 | Canon Inc | Inkjet recorder |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2859226B2 (en) * | 1996-11-20 | 1999-02-17 | 新潟日本電気株式会社 | Paper transport device |
| JP3022849B2 (en) | 1998-01-05 | 2000-03-21 | セイコーエプソン株式会社 | Printer |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4491854A (en) | 1982-07-29 | 1985-01-01 | U.S. Philips Corporation | Printer with a guide ruler for flattening a record carrier |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63854U (en) * | 1986-02-03 | 1988-01-06 | ||
| JPS6384958A (en) * | 1986-09-30 | 1988-04-15 | Canon Inc | Sheet feed device |
| US4843338A (en) * | 1987-10-23 | 1989-06-27 | Hewlett-Packard Company | Ink-set printhead-to-paper referencing system |
-
1988
- 1988-10-07 JP JP63254208A patent/JP2994392B2/en not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4491854A (en) | 1982-07-29 | 1985-01-01 | U.S. Philips Corporation | Printer with a guide ruler for flattening a record carrier |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012045846A (en) * | 2010-08-27 | 2012-03-08 | Canon Inc | Inkjet recorder |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0299369A (en) | 1990-04-11 |
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