JPS59188467A - Paper-pressing mechanism for ink jet printer - Google Patents

Paper-pressing mechanism for ink jet printer

Info

Publication number
JPS59188467A
JPS59188467A JP6411483A JP6411483A JPS59188467A JP S59188467 A JPS59188467 A JP S59188467A JP 6411483 A JP6411483 A JP 6411483A JP 6411483 A JP6411483 A JP 6411483A JP S59188467 A JPS59188467 A JP S59188467A
Authority
JP
Japan
Prior art keywords
paper
rollers
ink jet
ink
roller
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
Application number
JP6411483A
Other languages
Japanese (ja)
Other versions
JPH0520277B2 (en
Inventor
Mitsuaki Maruyama
丸山　三明
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Seiko Epson Corp
Suwa Seikosha KK
Epson Corp
Original Assignee
Seiko Epson Corp
Suwa Seikosha KK
Epson Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Seiko Epson Corp, Suwa Seikosha KK, Epson Corp filed Critical Seiko Epson Corp
Priority to JP6411483A priority Critical patent/JPS59188467A/en
Publication of JPS59188467A publication Critical patent/JPS59188467A/en
Publication of JPH0520277B2 publication Critical patent/JPH0520277B2/ja
Granted legal-status Critical Current

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

Landscapes

  • Handling Of Cut Paper (AREA)
  • Dot-Matrix Printers And Others (AREA)
  • Ink Jet (AREA)

Abstract

PURPOSE:To enable to use an ordinary paper also, by a method wherein a plurality of rollers smaller in diameter than paper press rollers and provided with thin saw tooth form projections on the outside periphery thereof are provided between the paper press rollers, in an ink jet printer. CONSTITUTION:The paper-pressing mechanism provided above a platen 1 comprises a pair of paper press rollers 4 for pressing both ends of a paper 3 which rollers are provided on a shaft 6, and a plurality of rollers 5 which are provided between the rollers 4 and each of which is provided with a plurality of saw tooth form projections on the outside periphery thereof slightly smaller in diameter than the rollers 4. When ink jet printing is conducted, the surface of the paper 3 is wetted, the paper 3 is elongated, and wrinkles are generated, so that the paper 3 once brought into close contact with the platen 1 is levitated. In this case, since a plurality of rollers 5 are provided between a pair of paper press rollers 4, the levitation quantity can be dispersed, and the paper 3 can be prevented from making contact with a nozzle surface of a printing head 7.

Description

【発明の詳細な説明】 （１）　　技術分野 本発明はインクジェットプリンタの紙押え機構に関する
。DETAILED DESCRIPTION OF THE INVENTION (1) Technical Field The present invention relates to a paper holding mechanism for an inkjet printer.

（２）従来技術 インクジェットプリンタに使用されるインクは、噴射ノ
ズル内で目づ捷りを生じないように乾燥しにくく、かつ
紙面に付着した後は速やかに乾燥する、という相反する
特性が必要とされ、この要求を満足させるインクを得る
ことは難しい。従って、従来のインクジェットプリンタ
では、使用する用紙を指定し、内部空隙率の高い吸水性
の紙によって速やかにインクを紙白部に吸収してしまう
方法がとられていた。(2) Conventional technology The ink used in inkjet printers needs contradictory characteristics: it is difficult to dry so as not to cause smearing within the ejection nozzle, and it also dries quickly after adhering to the paper surface. However, it is difficult to obtain ink that satisfies this requirement. Therefore, in conventional inkjet printers, a method has been adopted in which the paper to be used is specified and the ink is quickly absorbed into the paper's white area using water-absorbent paper with a high internal porosity.

この方法によれば、特殊加工の施された指定された紙取
外、例えば普通紙等が使用できず、高価な紙を使用しな
ければならなかった。According to this method, it is not possible to use specified paper that has been specially processed, such as plain paper, and expensive paper must be used.

（３》　　　　目　　　的 本発明は上記の不具合点を解消し、普通紙も使用できる
インクシエンドプリンタヲ提供することにある。(3) Purpose The purpose of the present invention is to solve the above-mentioned problems and provide an ink-end printer that can also use plain paper.

（４）構成 本発明の実施例を図面に従って詳説する。(4) Configuration Embodiments of the present invention will be described in detail with reference to the drawings.

第１図は本発明の紙押え機構を示す概略斜視図で、第２
図は本発明の紙押え機構の作用を示す図で、第６図は本
発明に用いられる鋸歯状突起を有するローラの詳細図で
ある。FIG. 1 is a schematic perspective view showing the paper pressing mechanism of the present invention;
The figure shows the operation of the paper pressing mechanism of the present invention, and FIG. 6 is a detailed view of the roller having serrated projections used in the present invention.

１はプラテンでインクジェット方式の印刷ヘンドアと対
向配置されている。２は紙案内である。Reference numeral 1 denotes a platen, which is placed opposite to an inkjet printing head door. 2 is a paper guide.

記録用紙５はグラテン１に巻きつけらオし、グラテン１
の下方に配された紙送シローラ８とプラテン１の間には
さまれ、プラテン１の矢印Ａ方向の回転に伴って、矢印
Ｂ方向へ送り出される。プラテン１の上方には本発明の
紙押え機構を有し、軸６上に紙６の両端を押える１対の
紙押えローラ４と、この１対の紙押え口１−ラの間に配
され、紙押えローラより外径のわずかに不埒い外周に多
数の鋸歯状突起を肩するローラ５とで構成されている。Recording paper 5 is wrapped around grating 1 and then wrapped around grating 1.
The sheet is sandwiched between the paper feeding roller 8 and the platen 1 arranged below the sheet, and is sent out in the direction of arrow B as the platen 1 rotates in the direction of arrow A. A paper presser mechanism according to the present invention is provided above the platen 1, and is arranged between a pair of paper presser rollers 4 on a shaft 6 that presses both ends of the paper 6, and a pair of paper presser ports 1-2. , and a roller 5 having a large number of sawtooth protrusions on its outer periphery, which is slightly erratic in outer diameter than the paper pressing roller.

５１はローラ５のカバーで、第１図には１個のローラ５
だけカバー５１をかけてあフ、他のローラ５は形状が理
解し易いように外した状態を表わしである。51 is a cover for the roller 5, and one roller 5 is shown in FIG.
Only the cover 51 is attached, and the other rollers 5 are shown removed to make it easier to understand their shapes.

第６図（ａ）、　（ｂ）は前述の鋸歯状突起を有するロ
ーラの詳細を示しており、厚さ０．２藺程度の金属板を
プレス等で打ち抜き鋸歯状突起を有する円板５２を形成
し、両側からフ゛ラスチンク製のカバー５５ではさみ込
んでローラ５を形成する。FIGS. 6(a) and 6(b) show the details of the roller having serrated projections described above, and a disk 52 having serrated projections is formed by punching out a metal plate with a thickness of about 0.2 mm using a press or the like. The roller 5 is formed by sandwiching it between covers 55 made of plastic from both sides.

第２図にもとづき本発明の詳細な説明する。The present invention will be explained in detail based on FIG.

記録用紙３として普通紙を用い、インクシエンド印刷ヘ
ンドアで印刷を行なうと、インクの噴射量に応じて紙面
が濡れた状態となり、紙が伸びしわが生じ、プラテン１
に密着した祇３が浮いた状態となるが、一対の紙押えロ
ーラ４の間に複数個のローラ５を配しているために浮き
上かり量を分散でき、印刷ヘッド７のノズル向に記録用
紙５が接触するのを防ぐ。When plain paper is used as the recording paper 3 and printing is performed with the ink side print door, the paper surface becomes wet depending on the amount of ink ejected, the paper stretches and wrinkles occur, and the platen 1
However, since a plurality of rollers 5 are arranged between a pair of paper pressing rollers 4, the amount of floating can be dispersed, and the paper is printed in the direction of the nozzles of the print head 7. Prevent the paper 5 from coming into contact with each other.

ｍ４図は、本発明者が製造した印刷ヘッドとインクを用
い、第１図に示される紙押え機構でローラ５を５個配し
たものケ用いて、種々の記録紙についてインク噴射全行
な：）だデータを示すものである。各Ｔ−夕の横軸は一
行の記録に対する印字ドツトの密度（以後印字デユーテ
ィと称す）を示し、縦軸はＡ４版サイズの用紙を横長に
用いた時の紙幅全基準とし一行８０桁分の印刷を行なっ
た後の用紙の幅方向への伸び量を示している。また、印
字デユーティ１００チとは、−打金部分にインク噴射を
行なうベタ打ちの状態を表わす。通常、文字印字の場合
、アルフンベントや数字では平均でデユーティ１５チ前
後で１．ＴＩＳ第１水準漢字では平均でデユーティ５０
％前後である。デユーティ１００チのベタ打ちはグラフ
インク等の場合によく用いられる。印刷ヘッドと１ラテ
ンとのギヤツブは約１ＷｒＩｎとする。Figure m4 shows ink jetting for all lines on various types of recording paper using the print head and ink manufactured by the present inventor, and using the paper holding mechanism shown in Figure 1 with five rollers 5: ) indicates data. The horizontal axis of each T-number indicates the density of printing dots for one line of recording (hereinafter referred to as printing duty), and the vertical axis indicates the total paper width when A4 size paper is used horizontally, and the density of one line of 80 digits. It shows the amount of elongation of paper in the width direction after printing. Further, the printing duty of 100 times indicates a state of solid printing in which ink is jetted to the negative part. Normally, in the case of character printing, Alfbento and numbers, the average duty is around 15 inches. The average duty for TIS level 1 kanji is 50.
It is around %. Solid printing with a duty of 100 inches is often used for graph ink and the like. The gearing between the print head and 1 latin is approximately 1 WrIn.

以上の条件のもとて第４図（ａ）〜（ｆ）に示す各種の
紙で実験を行なった結果、（ａ）の如く特殊加工された
専用紙では、デユーティ１００％の印刷を行なっても紙
幅の伸び量は１ｔＭｎ程度に抑えられているのに対し、
（ｆ゛）の普通紙ではデユーティ１００褒の印刷を行な
うと紙の伸び量は５畷程度になってしまう。As a result of conducting experiments on various types of paper shown in Figures 4 (a) to (f) under the above conditions, it was found that 100% duty printing was performed on the specially processed special paper shown in (a). However, while the paper width elongation is suppressed to about 1tMn,
When printing with a duty of 100 on plain paper (f), the amount of paper elongation will be about 5 tatami.

ｍ４図の谷実験データに示される二点鎖線の位　５− 置は、ローラ５を２個備えた場合に印刷ヘッドに記録用
紙が接触しない範囲を示すもので、はぼ１動程度の伸び
量までは紙幅が伸びてもヘッドに記録用紙を触れさせず
にできる。The position of the two-dot chain line shown in the valley experimental data in the m4 diagram indicates the range in which the recording paper does not come into contact with the print head when two rollers 5 are provided, and the amount of elongation is approximately one movement. This can be done without the recording paper touching the head, even if the paper width increases.

第４図（ｆ）の如く普通紙の場合にはデユーティ５０チ
以上の印刷を行なうと、印刷ヘッドと紙のこすれ（接触
）が生じてし１う。そこで、ローラ５を５個に増した結
果、伸び量が２１１ｎ程度捷で伸びても印刷ヘッドと紙
のこすれかなかった。In the case of plain paper as shown in FIG. 4(f), if printing is performed with a duty of 50 pages or more, rubbing (contact) between the print head and the paper will occur. Therefore, as a result of increasing the number of rollers 5 to five, the print head and paper did not rub against each other even if the amount of elongation was approximately 211n during cutting.

（５）効果 以上説明した様に、本発明の紙押え機構はローラ５が円
周上に極く薄い鋸歯状突起が形成されているので、紙が
浮いてこの突起先端に触れても、インクを乾燥しない印
刷面を汚すことがない。(5) Effects As explained above, in the paper holding mechanism of the present invention, the roller 5 has extremely thin serrated protrusions formed on the circumference, so even if the paper floats and touches the tip of the protrusions, the ink will not be absorbed. It will not dry out and will not stain the printed surface.

また、ローラ５はローラ４よシも外径が小さいため、紙
の伸び量が微少の時は紙に触れることがないため、上述
同様に紙面を汚すことがない。Further, since the roller 5 has a smaller outer diameter than the roller 4, it does not touch the paper when the amount of paper elongation is minute, so the paper surface is not stained as described above.

更に、ローラ５はｍ歯状突起を有する薄い金属板を両側
からプラスチック等の押え板で押え込むだけなので、簡
単かつ安価にできる。Furthermore, since the roller 5 simply presses down a thin metal plate having m-toothed protrusions from both sides with press plates made of plastic or the like, it can be done easily and inexpensively.

　６− 本発明の紙押え構造によれば、記録紙を特定することな
く普通紙が利用でき、かつインクやヘッドに制約を与え
ることなく使用できるため、インクジエントグリンタの
利用範囲を拡げることができる。6- According to the paper holding structure of the present invention, plain paper can be used without specifying the recording paper, and it can be used without imposing restrictions on ink or heads, so the range of use of the inkjet printer can be expanded. .

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は本発明の紙押え機構を示す概略斜視図である。 第２図は本発明の詳細な説明するための図である。 第５図は第１図に示すローラ５の詳細図である。 第４図を本発明を用いて各種の紙について行なった実験
のデータである。 以　　　上 手続補正書（自発） 昭和５８年　　特￥１願第６４１１４　　＋３２、発明
の名称 インクジェットプリンタの紙押え機構 ３　補正をする者 事ｆ′１受の関係　長野県諏訪市大和３丁目３番５号出
願人（２３７）エプソン株式会社 東京都渋谷区神宮前２丁目６番８号 −− 手続補正書（方式） ％式％（） １、　明細書第５頁第１２行目の後に以下の文を追加す
る。 「以下に第４図（ａ）〜（ｆ）までのグラフに用いられ
た制録紙金示す。 （ａ）ｌｄ（ンクジェット用の「マッドコート紙」（三
菱製紙）で、（ｂ）　ｍインクジェット用の「Ｍ紙」（
三菱製紙）で、（Ｃ）は普通紙の「Ａ紙」（三菱製紙）
で、（ｄ）　Ｈ普通紙の「Ｂ紙」（三菱製紙）ｒ：、（
ｅ）にインクジェット用の「Ｆ　Ｃ−２紙」（十条製紙
）で、（ｆ）は普通紙の「連続伝票用紙５５′に９紙」
（万代紙性）である。」以上 代理人　最　上　　　務 手続補正書（方式） ％式％ ２、発明の名称 インクジェットプリンタの紙押え機構 ３、補正をする者 １４′１°８′）′Ａ″長野県諏訪市大和Ｓ丁目５番５
号出願”　（２５７）　　エプソン株式会社代表取締役
　中　村　恒　也 ４、代　理　人　　　　　　　　　　　　　　　　　　
（他１名）５　補正命令の日付 、第４図を別紙の如く訂正する。 以上 第４図 −４１６−FIG. 1 is a schematic perspective view showing a paper pressing mechanism of the present invention. FIG. 2 is a diagram for explaining the present invention in detail. FIG. 5 is a detailed view of the roller 5 shown in FIG. 1. FIG. 4 shows data from experiments conducted on various types of paper using the present invention. Written amendment to the above procedures (voluntary) 1981 Patent Application No. 64114 +32, Name of the invention Paper holding mechanism for inkjet printer 3 Person making the amendment F'1 Relation 3-3-5 Yamato, Suwa City, Nagano Prefecture No. Applicant (237) Epson Corporation 2-6-8 Jingumae, Shibuya-ku, Tokyo -- Procedural amendment (method) % formula % () 1. After the 12th line of page 5 of the specification, insert the following sentence: to add. The recording paper used for the graphs in Figures 4 (a) to (f) is shown below. "M paper" for inkjet (
Mitsubishi Paper Mills), and (C) is plain paper "A Paper" (Mitsubishi Paper Mills)
(d) "B paper" (Mitsubishi Paper Mills) of H plain paper r:, (
e) is "FC-2 paper" (Jujo Paper) for inkjet use, and (f) is plain paper "9 sheets on continuous slip paper 55'"
(Bandai paper quality). ” or above Agent Top Procedures Amendment (Method) % Formula % 2. Name of the invention Paper holding mechanism for inkjet printer 3. Person making the amendment 14'1°8')'A'' Yamato S-chome, Suwa City, Nagano Prefecture 5th 5th
(257) Representative Director of Epson Corporation Tsuneya Nakamura 4, Agent
(1 other person) 5. The date of the amendment order and Figure 4 are corrected as shown in the attached sheet. Above is Figure 4-416-

Claims (2)

【特許請求の範囲】[Claims] （１）印刷ヘッドからインク滴を噴射し記録を行なうイ
ンクジェットプリンタに於いて、グラテンに当接し回転
する２個の紙押えローラと、核紙押えｐ−ラの間で同軸
上に配され前記紙押えローラよ、り径が小さく前記プラ
テンと当接しない外周に薄い鋸歯状突起を有するローラ
を複数個備えたことを特徴とするインクシエンドプリン
タの紙押え機構。(1) In an inkjet printer that performs recording by ejecting ink droplets from a print head, two paper presser rollers that rotate in contact with a grating and a core paper presser p-roller are arranged coaxially to hold the paper. A paper holding mechanism for an ink-end printer, comprising a plurality of rollers having a smaller diameter than the holding roller and having thin serrated projections on the outer periphery that do not come into contact with the platen. （２）鋸歯状突起を有するローラを少なくとも５個備え
たことを特徴とする請求 記載のインクシエンドプリンタの紙押え機構。(2) A paper holding mechanism for an ink-side printer according to claim 1, characterized in that the paper holding mechanism is provided with at least five rollers having serrated projections.
JP6411483A 1983-04-12 1983-04-12 Paper-pressing mechanism for ink jet printer Granted JPS59188467A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6411483A JPS59188467A (en) 1983-04-12 1983-04-12 Paper-pressing mechanism for ink jet printer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6411483A JPS59188467A (en) 1983-04-12 1983-04-12 Paper-pressing mechanism for ink jet printer

Related Child Applications (1)

Application Number Title Priority Date Filing Date
JP2096918A Division JP2552192B2 (en) 1990-04-12 1990-04-12 Paper ejection roller in inkjet printer

Publications (2)

Publication Number Publication Date
JPS59188467A true JPS59188467A (en) 1984-10-25
JPH0520277B2 JPH0520277B2 (en) 1993-03-19

Family

ID=13248715

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6411483A Granted JPS59188467A (en) 1983-04-12 1983-04-12 Paper-pressing mechanism for ink jet printer

Country Status (1)

Country Link
JP (1) JPS59188467A (en)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59190544U (en) * 1983-06-03 1984-12-18 日立工機株式会社 Inkjet printer paper holding device
JPS61206676A (en) * 1985-03-12 1986-09-12 Canon Inc Ink jet recorder
JPH0283846U (en) * 1988-12-16 1990-06-28
JPH0541817U (en) * 1991-11-08 1993-06-08 セイコーエプソン株式会社 Printer output mechanism
US5291224A (en) * 1989-10-27 1994-03-01 Canon Kabushiki Kaisha Sheet feeding apparatus using pairs of spur rollers
FR2705057A1 (en) * 1992-09-10 1994-11-18 Seiko Epson Corp Method of discharging sheet of paper in a printer.
EP0736389A2 (en) * 1995-04-07 1996-10-09 Seiko Epson Corporation Ink jet recording method
EP0699537A3 (en) * 1994-09-02 1997-02-19 Canon Kk Ink jet recording apparatus
US5850233A (en) * 1989-09-18 1998-12-15 Canon Kabushiki Kaisha Conveying rotational member for an ink recording apparatus, and ink recording apparatus having the same
US6293669B1 (en) 1999-02-17 2001-09-25 Canon Kabushiki Kaisha Ink jet recording apparatus
EP2021184A1 (en) * 2006-05-26 2009-02-11 Ricoh Company, Ltd Paper conveying apparatus, image forming apparatus and ink-jet recording apparatus

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4534787B2 (en) 2005-02-21 2010-09-01 ブラザー工業株式会社 Image forming apparatus

Cited By (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59190544U (en) * 1983-06-03 1984-12-18 日立工機株式会社 Inkjet printer paper holding device
JPS61206676A (en) * 1985-03-12 1986-09-12 Canon Inc Ink jet recorder
JPH06102386B2 (en) * 1985-03-12 1994-12-14 キヤノン株式会社 Inkjet recording device
JPH0283846U (en) * 1988-12-16 1990-06-28
US5850233A (en) * 1989-09-18 1998-12-15 Canon Kabushiki Kaisha Conveying rotational member for an ink recording apparatus, and ink recording apparatus having the same
US5636929A (en) * 1989-10-27 1997-06-10 Canon Kabushiki Kaisha Sheet feeding apparatus having multiple rotary members and cleaning members
US5291224A (en) * 1989-10-27 1994-03-01 Canon Kabushiki Kaisha Sheet feeding apparatus using pairs of spur rollers
JPH0541817U (en) * 1991-11-08 1993-06-08 セイコーエプソン株式会社 Printer output mechanism
US6027204A (en) * 1992-09-10 2000-02-22 Seiko Epson Corporation Printer including an ink cartridge
US5946016A (en) * 1992-09-10 1999-08-31 Seiko Epson Corp. Printer sheet discharge method
USRE40581E1 (en) * 1992-09-10 2008-11-25 Seiko Epson Corporation Printer including an ink cartridge
US5648807A (en) * 1992-09-10 1997-07-15 Seiko Epson Corporation Ink jet recording apparatus having an antismear sheet deformation discharge system
USRE38926E1 (en) 1992-09-10 2005-12-27 Seiko Epson Corporation Printer including an ink cartridge
US5742316A (en) * 1992-09-10 1998-04-21 Seiko Epson Corporation Actuation mechanism and printer using same
FR2705057A1 (en) * 1992-09-10 1994-11-18 Seiko Epson Corp Method of discharging sheet of paper in a printer.
US5850235A (en) * 1992-09-10 1998-12-15 Seiko Epson Corporation Printer
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