JPH03293136A - Sheet feed member for ink jet recording device - Google Patents
Sheet feed member for ink jet recording deviceInfo
- Publication number
- JPH03293136A JPH03293136A JP2095482A JP9548290A JPH03293136A JP H03293136 A JPH03293136 A JP H03293136A JP 2095482 A JP2095482 A JP 2095482A JP 9548290 A JP9548290 A JP 9548290A JP H03293136 A JPH03293136 A JP H03293136A
- Authority
- JP
- Japan
- Prior art keywords
- spur
- ink
- recording medium
- printing
- 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.)
- Granted
Links
- 239000007788 liquid Substances 0.000 claims description 10
- 238000007639 printing Methods 0.000 abstract description 43
- 230000002093 peripheral effect Effects 0.000 abstract description 6
- 230000001112 coagulating effect Effects 0.000 abstract 1
- 239000000976 ink Substances 0.000 description 62
- 239000007787 solid Substances 0.000 description 9
- 238000010586 diagram Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 5
- 229920005989 resin Polymers 0.000 description 5
- 239000011347 resin Substances 0.000 description 5
- 238000010186 staining Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 238000009835 boiling Methods 0.000 description 2
- 239000003086 colorant Substances 0.000 description 2
- 230000008602 contraction Effects 0.000 description 2
- -1 polyethylene Polymers 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- BQCIDUSAKPWEOX-UHFFFAOYSA-N 1,1-Difluoroethene Chemical compound FC(F)=C BQCIDUSAKPWEOX-UHFFFAOYSA-N 0.000 description 1
- RGYAVZGBAJFMIZ-UHFFFAOYSA-N 2,3-dimethylhex-2-ene Chemical compound CCCC(C)=C(C)C RGYAVZGBAJFMIZ-UHFFFAOYSA-N 0.000 description 1
- 239000004677 Nylon Substances 0.000 description 1
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- 229930182556 Polyacetal Natural products 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- UUAGAQFQZIEFAH-UHFFFAOYSA-N chlorotrifluoroethylene Chemical group FC(F)=C(F)Cl UUAGAQFQZIEFAH-UHFFFAOYSA-N 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 229920006026 co-polymeric resin Polymers 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229920000840 ethylene tetrafluoroethylene copolymer Polymers 0.000 description 1
- 150000002222 fluorine compounds Chemical class 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- HCDGVLDPFQMKDK-UHFFFAOYSA-N hexafluoropropylene Chemical group FC(F)=C(F)C(F)(F)F HCDGVLDPFQMKDK-UHFFFAOYSA-N 0.000 description 1
- 229920001903 high density polyethylene Polymers 0.000 description 1
- 239000004700 high-density polyethylene Substances 0.000 description 1
- 238000007641 inkjet printing Methods 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 229920002492 poly(sulfone) Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920006324 polyoxymethylene Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000004043 responsiveness Effects 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- BFKJFAAPBSQJPD-UHFFFAOYSA-N tetrafluoroethene Chemical group FC(F)=C(F)F BFKJFAAPBSQJPD-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Ink Jet (AREA)
- Handling Of Cut Paper (AREA)
- Delivering By Means Of Belts And Rollers (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、紙、フィルムなどの記録媒体に記録液を吐出
して記録を行うインクジェット記録装置に用いる記録媒
体の搬送用ローラに関するものである。[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a roller for conveying a recording medium used in an inkjet recording device that performs recording by discharging a recording liquid onto a recording medium such as paper or film. .
従来例１
従来インクジェットプリンターに於いては、記録媒体に
インク液滴を吐出した後に記録媒体の被印字面には何も
当接させないか、印字媒体の記録可能範囲外の部分に拍
車等を当接させるものが多かった。又、ピンフィードタ
イプのものもある。Conventional Example 1 In conventional inkjet printers, after ejecting ink droplets onto a recording medium, nothing is brought into contact with the printing surface of the recording medium, or a spur or the like is applied to a portion of the printing medium outside the recordable range. There were many things I could touch. There is also a pin feed type.
従来例２
被印字面の印字可能範囲内に当接しているタイプのもの
については、普通紙では無く、定着性のよいコート紙等
に代表されるインクジェット専用紙を用いるものか、さ
らにはインクの乾燥を促進させる為の定着器等の熱源を
取り付けるものが普通であった。Conventional Example 2 Regarding the type of paper that is in contact with the printable area of the printing surface, it is not plain paper that is used, but special inkjet paper, such as coated paper with good fixing properties, is used, or inkjet paper is used instead of plain paper. It was common to install a heat source such as a fixing device to accelerate drying.
従来例３
又、印字速度が遅く拍車に到達するまでの時間が充分長
く、その間にインクが乾燥して定着してしまう様なもの
にあっては、通常の環境下では使用できる可能性があっ
たが、この様なタイプのものに於いて拍車は、通常、記
録媒体の被印字面に対してできるだけ接触面積を減らし
て、転写可能な面積を極力減らして印字した線や文字に
当る確率を下げるとともに、拍車にインクが転写されて
しまった場合にも拍車が回転して転写したインクが記録
媒体に再転写して印字面を汚す量が極力少なくなる様に
第１１図や第１３図に示す様な記録媒体に当接する周面
か細く、鋭利にとがった不連続な周面を持った星形の形
状をしているものであった。Conventional Example 3 Furthermore, if the printing speed is slow and it takes a long enough time to reach the spur, and the ink dries and becomes fixed during that time, there is a possibility that it cannot be used under normal circumstances. However, in this type of spur, the contact area with the printing surface of the recording medium is usually reduced as much as possible to reduce the transferable area as much as possible to reduce the probability of hitting the printed line or character. At the same time, if ink is transferred to the spur, the spur rotates and the transferred ink is re-transferred to the recording medium and the amount of staining the printing surface is minimized, as shown in Figures 11 and 13. As shown in the figure, the circumferential surface that contacts the recording medium is thin and star-shaped with sharply discontinuous circumferential surfaces.
従来例４
拍車に代表される被印字後の記録媒体に当接し回転する
紙送り用部材に於いて、その周面が連続的に記録媒体に
当接する形状であることを特徴とするローラを設けるこ
とにより、記録媒体面上のインクを原理的に定着する前
であっても拍車上へ転写させない構成とし、搬送性と拍
車跡の無い印字の両立を可能としたものがある。Conventional Example 4 In a paper feeding member typified by a spur that rotates while contacting the recording medium after printing, a roller is provided whose peripheral surface is shaped to continuously contact the recording medium. As a result, there is a structure in which the ink on the surface of the recording medium is theoretically not transferred onto the spurs even before it is fixed, making it possible to achieve both transportability and printing without spur traces.
基本的には、拍車がインクに接したときは、拍車とイン
ク間での表面の結合力とインクと紙間での結合力とイン
クそのものの凝集力で付着するしないの力のバランスが
決まっており、この力のバランスの特性を利用する形状
を用いることにより拍車が動いたときに、拍車へ付着す
る力の方が常に低くなるようにすることにより拍車への
インクの非転写がはかれる様にしたものである。Basically, when a spur comes into contact with ink, the balance of adhesion forces is determined by the surface bonding force between the spur and ink, the bonding force between the ink and paper, and the cohesive force of the ink itself. By using a shape that takes advantage of this force balance characteristic, when the spur moves, the force attached to the spur is always lower, so that ink is not transferred to the spur. This is what I did.
〔発明が解決しようとしている課題Ｊ
しかしながら、上記従来例に於いては種々の欠点を有し
ていた。[Problem to be Solved by the Invention J] However, the above-mentioned conventional example had various drawbacks.
従来例１の拍車の無いものに於いては、記録装置の排紙
側に於いて、特に高温下等の条件であったり、ロール紙
等の長尺紙を用いたときなどでは排紙した記録媒体の先
端のすべりが悪くなり、流れがスムーズに行かなかった
場合などに於いて、記録媒体にたわみが発生し、もとも
と記録ヘッドと記録媒体間は０．８ｍｍ程度しか無い為
、記録媒体と記録ヘッドが接触を起こし、被印字面を汚
してしまうという確率が非常に高くなってしまった。又
、ひどい場合には記録媒体がはさまり、ジャムを起こし
てしまうことが多々発生してしまった。In the conventional example 1 without spurs, on the paper ejection side of the recording device, especially under high temperature conditions or when using long paper such as roll paper, the ejected record is When the leading edge of the medium is not slippery and the flow does not go smoothly, the recording medium will bend, and since there is originally only about 0.8 mm between the recording head and the recording medium, the recording medium and the recording medium will bend. There is a very high probability that the heads will come into contact and stain the printing surface. In addition, in severe cases, the recording medium often gets caught and jams occur.
又、印字デユーティ−が高いベタ印字やグラフィクス等
の印字を行った場合にもやはり記録媒体がコツクリング
等の変形を起こして、印字面が少し浮き上がる為に、い
っそう記録ヘッド紙間ギャップが狭くなり、排紙が不安
定だと印字面を汚す確率が高くなっていた。In addition, when printing solid print or graphics with a high printing duty, the recording medium will also undergo deformation such as curling, and the printing surface will rise slightly, making the gap between the recording head and the paper even narrower. If paper ejection is unstable, there is a high probability of staining the printed surface.
又、従来例１の記録媒体の両端の記録可能範囲外に拍車
を当接させるタイプのものについては、原理的にまず印
字可能範囲が狭くなってしまう大きな欠点がある。Furthermore, the conventional example 1, in which the spurs are brought into contact with areas outside the recordable range at both ends of the recording medium, has a major drawback in that the printable range is narrowed in principle.
さらに、Ａ３サイズやＡ２サイズ等の大型の装置にあっ
ては、中央部の排紙性が低下する為に、排紙不良を起こ
し、前述の様なトラブルを起こしやすくなる。Furthermore, in large-sized devices such as A3 size and A2 size devices, the paper ejection performance in the center portion deteriorates, resulting in paper ejection failure and the above-mentioned troubles.
又、ユーザー側から見ても紙幅に応じて、いちいち拍車
位置を変更せねばならず、非常に手間がかかると共に、
設定をラフにすると印字範囲に入ってしまい印字面を汚
してしまったりしてしまう欠点があった。Also, from the user's point of view, the spur position must be changed each time depending on the paper width, which is very time-consuming and
If the settings were too rough, it would fall within the printing range and smudge the printing surface.
従来例２のものに於いては、インクジェット専用紙の為
にインクの吸収能力が非常に高く、もともと問題が出に
くいが、高湿化では同様のことが起こる。又、ピンフィ
ードのものでは、ハガキやカット紙、ＯＨＰフィルム等
の多種の記録媒体に対応出来ず今後のニーズに一致しな
くなる。Conventional Example 2 has a very high ink absorption capacity because it is a paper exclusively used for inkjet printing, so problems are not likely to occur in the first place, but the same problem occurs when the humidity is high. Furthermore, the pin-feed type cannot support various types of recording media such as postcards, cut paper, and OHP films, and will not meet future needs.
又、従来例３に於いては、前述従来例１．２の様な欠点
はすべて解消できるが、基本的に印字速度が遅い低速機
にしか応用できないという大きな欠点がある。Furthermore, although Conventional Example 3 can overcome all the drawbacks of Conventional Examples 1 and 2, it has a major drawback in that it can basically only be applied to low-speed machines with slow printing speeds.
又、近年は小型可殻型のラップトツブ型パソコンやワー
プロ等のＯＡ機器が増大しており、その出力装置に於い
ても当然、小型、可搬型のものが求められており、その
大きさは年々小さくなり、特に薄型になっていく傾向強
い。その為に記録ヘッドと拍車の位置が第１Ｏ図に示す
様に非常に近くなり、いくら低速機であっても２秒程度
で印字してから拍車の位置まで被印字面が送られ到達し
てしまう様になってしまってきた。In addition, in recent years, the number of office automation equipment such as small portable laptop computers and word processors has increased, and the output devices for these devices are naturally required to be small and portable, and the size of these devices is increasing year by year. There is a strong tendency for devices to become smaller and, in particular, thinner. For this reason, the positions of the recording head and the spur are very close to each other, as shown in Figure 1O, and even if it is a low-speed machine, it takes about 2 seconds to print and then the printing surface is fed to the spur and reaches the position of the spur. It's starting to feel like I'm putting it away.
その為に、キャラクタ程度の印字でも拍車へのインクの
転写が起こり、いわゆる拍車跡といわれる点線の様な不
連続点のならびの汚れが記録媒体の主送査方向に出てし
まう様になった。ましてや、グラフィックス印字やベタ
印字の様に印字比率が高い印字を行った後では、非常に
目立つものとなり、さらに高湿下で使用した場合には、
はとんど製品としては成り立たないレベルになってしま
った。又、当然紙送りの速い高速機に於いても同様であ
り、さらにカラー機に於いては、前の印字ラインと次の
印字ラインで色が違った場合、拍車に前のラインのイン
クが転写して次のラインのインクと混色を起こし、Ｃ，
Ｍ、Ｙ系のインクではまったく異なる色になってしまっ
たり、黒インクが薄い色の上ににじんでしまい、やはり
ほとんど製品としては成り立たないものになってしまう
。As a result, even when printing characters, ink transfers to the spurs, and so-called spur traces, a series of discontinuous points like dotted lines, appear in the main feeding direction of the recording medium. . Furthermore, it becomes very noticeable after printing with a high printing ratio such as graphics printing or solid printing, and furthermore, when used under high humidity,
It has reached a level where it is no longer viable as a product. Naturally, the same applies to high-speed machines that feed paper quickly, and in color machines, if the color is different between the previous print line and the next print line, the ink from the previous line will be transferred to the spur. This causes color mixing with the next line's ink, resulting in C,
M and Y inks result in completely different colors, and black ink bleeds onto lighter colors, resulting in a product that is almost unusable.
又、従来例４の様な構成にしたものに於いても搬送力や
耐久性ＵＰの為に印字面への当接幅を広くすると、拍車
跡は出ない範囲にあっても１８０ｄｐｉや３００ｄｐ
ｉ以上の高詳細グラフィック対応のものに於いてはハー
フトーン印字が多用される為、定着しにくい高湿下にあ
っては、５０％〜１００％未満の印字ｄｕｔｙ （濃度
）のハーフトーン印字等を行った場合拍車が通った後は
、画像つぶれが目立つほど黒スジ状にハーフトーン部が
なってしまう恐れがあった。しかし、１８０ｄｐ ｉ程
度以下の印字品位の低いものやキャラクタ−やベタ印字
がメインのものではこの様な恐れは実際上は少なかった
。しかし、又、記録媒体上への当接幅がさらに広くなる
と、拍車上へベタ黒部から非印字部へ拍車が通過する境
目でのみ拍車上へインクが１点だけ転写し、次のその点
の当接で１点だけ小さい画像汚れが生じることが従来の
例の中では検討されていなかった。In addition, even with a structure like Conventional Example 4, if the width of contact with the printing surface is widened in order to increase conveyance power and durability, even if the width is within the range where spur marks do not appear, it can be used at 180 dpi or 300 dp.
Since halftone printing is often used for products that support high-detail graphics of i or higher, halftone printing with a printing duty (density) of 50% to less than 100% is difficult in high humidity environments where it is difficult to fix. If this was done, after the spurs passed through, there was a risk that the halftone portion would appear in the form of black streaks, so much so that the image would become conspicuously distorted. However, in practice, this fear was small for low-quality printing of about 180 dpi or less, or for printing mainly characters or solid printing. However, when the contact width on the recording medium becomes wider, only one point of ink is transferred onto the spur only at the boundary where the spur passes from a solid black area to a non-printing area, and then the ink is transferred to the next point. In the conventional examples, it has not been considered that one small spot of image staining occurs due to contact.
よって、上述の様に紙送り系のトラブルと印字面上の拍
車跡のトラブルの両方を同時に解決する手法は今まで存
在しなかった。Therefore, as described above, there has not been a method to solve both the problems of the paper feeding system and the problems of spur marks on the printing surface at the same time.
［課題を解決するための手段］
本発明によれば、拍車に代表される被印字後の記録媒体
に当接し、回転する紙送り用部材に於いて、その周面が
連続的に記録媒体に当接しかつその周面より０．１ｍｍ
内径側での回転軸方向の幅を０．７ｍｍ以下にすること
により、記録媒体面上のインクをベタ黒土はもちろんこ
と、ベタ黒部と非印字部の境い目のインクの拍車上への
転写をもあらゆる媒体上でも防げることを可能としたも
のである。それにより搬送性とまったく拍車跡の出ない
印字の両立を可能としたものである。[Means for Solving the Problems] According to the present invention, in the paper feeding member, which rotates and comes into contact with the recording medium after printing, which is represented by a spur, the circumferential surface of the rotating paper feed member contacts the recording medium continuously. Contact and 0.1mm from the circumferential surface
By setting the width in the direction of the rotation axis on the inner diameter side to 0.7 mm or less, it is possible to transfer the ink on the recording medium surface not only to the solid black soil but also to the spur of the ink at the boundary between the solid black area and the non-printing area. This makes it possible to prevent attacks on any medium. This makes it possible to achieve both transportability and printing without any spur marks.
基本的には、拍車がインクに接したときは、拍車とイン
ク間での表面の結合力とインクと紙間での結合力とイン
クそのものの表面張力による凝集力で付着するしないの
力のバランスが決まっており、この力のバランス特性を
利用する。本発明の様な幅までを規定した形状を用いる
ことにより拍車が動いたときに拍車へ付着する力の方が
いかなる場合にも常に低くなるようにすることにより拍
車へのインクの完全非転写化がはかれることを本発明で
見い出したものである。Basically, when the spur comes into contact with ink, there is a balance between the surface bonding force between the spur and the ink, the bonding force between the ink and the paper, and the cohesive force caused by the surface tension of the ink itself. is determined, and the balance characteristics of this force are used. By using a shape with a defined width as in the present invention, when the spur moves, the force that sticks to the spur is always lower in any case, thereby completely non-transferring ink to the spur. It has been discovered in the present invention that this can be measured.
本発明の回転部材の幅の定義としては、紙等の記録媒体
やこの回転部材に於いても圧力をかけて当接した状態で
は微視的には変形しているものであり、又、先端面がも
とからＲ形状になっているものについても定義が不明確
になるので、当接する周面から０．１ｍｍ内径側での回
転軸を通る断面での幅で定義することとした。The definition of the width of the rotating member of the present invention is that the recording medium such as paper and this rotating member are microscopically deformed when they are brought into contact with each other under pressure. Since the definition is unclear even for those whose surfaces are originally rounded, it was decided to define the width in a cross section passing through the rotation axis 0.1 mm on the inner diameter side from the abutting peripheral surface.
〔実施例］
第１図〜第２図までは本発明の第１の実施例を示し、第
１図は本発明を使用したプリンターの全体の構成を表わ
すものであり、１は記録ヘッドとインクタンクが一体と
なったカートリッジであり、２はカートリッジを乗せて
副送査方向ヘスキャンする為のキャリッジであり、３は
そのキャリッジのガイド軸であり、４はメカのベースの
シャーシを示す。５は搬送用のプラテンローラであり、
６．７はやはり搬送用のローラである。８は本発明の実
施例による拍車であり、第２図及びその側面図である第
３図の形状の拍車を取り付けたものである。９は搬送用
のガイドである。Ｐは記録媒体を示す。また、第８図中
の１０は記録媒体上に吐出されたインクを表わす。第１
０図中の１１は従来例の拍車であり、第１１図及びその
側面図である第１２図の拍車を取り付けた状態を示す。[Example] Figures 1 and 2 show a first example of the present invention. Figure 1 shows the overall configuration of a printer using the present invention, and 1 indicates a recording head and ink. It is a cartridge with an integrated tank, 2 is a carriage on which the cartridge is placed and scanned in the sub-transfer direction, 3 is a guide shaft of the carriage, and 4 is a chassis of the base of the mechanism. 5 is a platen roller for conveyance;
6.7 is also a roller for conveyance. Reference numeral 8 designates a spur according to an embodiment of the present invention, to which a spur having the shape shown in FIG. 2 and FIG. 3, which is a side view thereof, is attached. 9 is a guide for conveyance. P indicates a recording medium. Further, 10 in FIG. 8 represents ink ejected onto the recording medium. 1st
Reference numeral 11 in Fig. 0 is a conventional spur, and the spur shown in Fig. 11 and Fig. 12, which is a side view thereof, is shown attached.
図１３及びその側面図である図１４はその他の従来例を
示し、図１５は従来例での拍車へのインクの転写プロセ
スを示した図である。FIG. 13 and FIG. 14, which is a side view thereof, show another conventional example, and FIG. 15 is a diagram showing the process of transferring ink to the spur in the conventional example.
表１
実施例
表１は本実施例に於ける第２図の形状かつテーパ部の印
字面とのなす角が８０°のもので紙面に対する当接圧な
２０ｇに設定して先端の幅の異なるサンプルを湿度の異
なる環境下でベタ黒のラインを印字直後ホームフィード
を行い拍車跡が出たかどうかのテストである。Table 1 Example Table 1 shows the shape of this example shown in Figure 2, and the angle between the tapered part and the printing surface is 80°, the contact pressure against the paper surface is set to 20g, and the width of the tip is different. In this test, a sample was home-fed immediately after printing a solid black line under different humidity environments to see if spur marks appeared.
・２５°’Ｃ／１０％ＲＨの所がすべてＯＫなのは拍車
の所へくる前にすべて定着してしまっている為、
・撲水性の高い材料例としては、一般に用いられる様な
、フッ素化合物系材料である四フッ化エチレン樹脂、パ
ーフルオロ−アルコキシ樹脂、六フッ化プロピレン共重
合樹脂、四フッ化エチレンーエチレン共重合樹脂、フッ
化ビニリデン樹脂、三フッ化塩化エチレン樹脂や又、高
密度ポリエチレンやポリエチレン、ポリプロピレン、ト
リメチルペンテン、ポリアセタール、ナイロン、ポリサ
ルフオン、フェノールなどのポリマーやそれらのポリマ
ーを表面にコーティングした部材が好ましい。基本的に
は撲水性と耐インク性と摩耗、変形強度を加味して決定
されるものである。・The reason why everything is OK at 25°C/10% RH is because everything has settled before reaching the spur. ・Examples of materials with high anti-water resistance include commonly used fluorine compound-based materials. Materials such as tetrafluoroethylene resin, perfluoro-alkoxy resin, hexafluoropropylene copolymer resin, tetrafluoroethylene-ethylene copolymer resin, vinylidene fluoride resin, trifluorochloroethylene resin, and high-density polyethylene Preferred are polymers such as polyethylene, polypropylene, trimethylpentene, polyacetal, nylon, polysulfone, and phenol, and members whose surfaces are coated with these polymers. Basically, it is determined by considering water resistance, ink resistance, abrasion, and deformation strength.
次に上記構成に於いて動作を説明すると、第１図に於い
てＰで示す記録媒体が第１図に示す様にセットされた後
に１の記録ヘッドを内蔵したカー１
２
トリッレが２のキャリッジの副走査方向への動きにより
Ｐの記録媒体へ１行印字を行う。次に５のプラテンロー
ラが回転することにより記録媒体が主走査方向へ送られ
る。本実施例第１図の様な小型可搬型のタイプの装置に
於いては、前述の様に、印字後すぐに印字部分が８の拍
車の所へ到達する。そのときの様子が第８図に示すもの
である。この状況は拍車が定着していないインクがＰの
記録媒体で静止している状況を示す。Next, to explain the operation in the above configuration, after the recording medium indicated by P in FIG. 1 is set as shown in FIG. One line is printed on the recording medium P by the movement in the sub-scanning direction. Next, platen roller 5 rotates to feed the recording medium in the main scanning direction. In a small and portable type device as shown in FIG. 1 of this embodiment, the printed portion reaches the spur 8 immediately after printing, as described above. The situation at that time is shown in FIG. This situation shows that the ink to which the spur is not fixed is stationary on the recording medium P.
第９図は次に第８図の状態から主走査方向へＰの記録媒
体が進み出し、８の拍車が当接点に於いて相対運動をは
じめた所を示す。第９図に示す様にインクは拍車表面に
拍車とインクの間の付着するエネルギーレベルで付着す
る為に拍車の回転により引きはがされる際に静止状態よ
りも盛り上がった形になる。しか□し、その際の形状は
盛り上がった点を頂点としたすそが広がった形状となる
。そのときの力のバランスを考えると８の拍車の周面の
形状が連続面であり、１０のインクがその８の拍車に対
する付着力に比例して引きずり上げられた所でインク自
体のすそ広がりの山形の盛り上がりを小さくして表面積
を小さくしようとする表面張力による凝集力の方が強く
なり、さらにその１０のインクの下側は大面積にわたっ
てインクとＰの記録媒体の付着力により拘束されている
為に、結果的にＰの記録媒体の方へすべりながら引きず
り降ろされることになる。それにより８の拍車上にはイ
ンクが転写することなく使用することが出来る。もし、
従来の拍車の様に周面の形状に不連続面があったとする
と、上述の力のバランスが−瞬くずれる為にその点イン
クを拍車上に残してしまう訳である。その極端な例が、
今までの従来例の第１５図に示すものである。この場合
は、不連続面であるがゆえに付着したインクを連続的に
下へ引きずり降ろす力が本発明の様に連続的に、かつ山
形のすそ広がりの盛り上がりが小さく個々の当接点に出
来てしまい、さらにほぼ印字面より垂直に持ち上げられ
てしまい、１１の拍車上にあるインク１０−ａとＰの記
録媒体上にある１０−ａのインク間にくびれが生じてし
まい最後にはそのくびれだ部分の膜面積が一番小さくな
ってしまう為に一番そこが弱くなってしまい、１０−ａ
のインクと１０−ｂのインクそれぞれの表面張力による
凝集力で切れてしまうことになる。その為に原理的に１
１の拍車上にインクが転写してしまう。FIG. 9 shows the state in which the recording medium P advances in the main scanning direction from the state shown in FIG. 8, and the spur 8 begins relative movement at the contact point. As shown in FIG. 9, the ink adheres to the surface of the spur at the energy level between the spur and the ink, so when it is peeled off by the rotation of the spur, it becomes more raised than when it is at rest. However, in this case, the shape becomes a shape with a widened base with the raised point as the apex. Considering the balance of forces at that time, the shape of the circumferential surface of the spur 8 is a continuous surface, and when the ink 10 is dragged up in proportion to the adhesion force to the spur 8, the base of the ink itself spreads. The cohesive force due to surface tension, which attempts to reduce the surface area by reducing the prominence of the mountain shape, becomes stronger, and furthermore, the lower side of the 10 inks is restrained over a large area by the adhesive force between the ink and the P recording medium. As a result, it ends up being dragged down toward the recording medium P. Thereby, the ink can be used without being transferred onto the spur 8. if,
If there is a discontinuous surface in the shape of the circumferential surface like in a conventional spur, the balance of the above-mentioned forces will be shifted, and ink will be left on the spur at that point. An extreme example is
A conventional example is shown in FIG. 15. In this case, since it is a discontinuous surface, the force that continuously drags down the attached ink is continuous as in the present invention, and the bulge in the widening of the mountain-shaped hem is small and is generated at each contact point. , furthermore, it is lifted almost perpendicularly from the printing surface, and a constriction is created between the ink 10-a on the spur 11 and the ink 10-a on the recording medium P, and in the end, the constriction is the part. Since the film area of 10-a is the smallest, it is the weakest part.
The ink will be cut due to the cohesive force due to the surface tension of the ink 10-b and the ink 10-b. Therefore, in principle 1
Ink is transferred onto spur 1.
又、周面が連続に当接するものであっても、ベタ黒部の
エツジ部に於いてはインクと拍車の状態が第１６図の様
になり、インクと紙の間の拘束面積が極端に減っていく
為に、前述の力のバランスがこの点でのみくずれ出して
いくことになる。その場合に於いても表１に示す結果の
様に拍車の幅が狭いものにおいては、もともと拍車とイ
ンク側の拍車の幅方向の拘束点が第１９図の状態で非常
に狭い為に記録媒体の進行方向の拘束面積は減少しても
やはり拍車側には転写されないという力学的な関係を本
発明では見い出した。逆に幅が１ｍｍ以上のものにあっ
ては、拍車側の拍車の幅方向の拘束面積の比率が第１８
図のように大きい為に記録媒体とインク側の拘束面積と
拍車とインク側の拘束面積の比が小さく、この点でのイ
ンクが拍車上へ１点転写し、拍車の回転による次の当接
点で記録紙上へ１点再転写してしまう。Furthermore, even if the peripheral surfaces are in continuous contact, the state of the ink and spurs at the edges of solid black areas will be as shown in Figure 16, and the constraint area between the ink and the paper will be extremely reduced. As a result, the aforementioned balance of power begins to collapse at this point. Even in that case, as shown in the results shown in Table 1, when the width of the spur is narrow, the constraint point in the width direction of the spur and the spur on the ink side is originally very narrow in the state shown in Figure 19, so the recording medium In the present invention, we have found a dynamic relationship in which even if the restraint area in the direction of travel is reduced, it is still not transferred to the spur side. Conversely, for those with a width of 1 mm or more, the ratio of the restraint area in the width direction of the spur on the spur side is 18th.
As shown in the figure, since it is large, the ratio of the restraint area between the recording medium and the ink side and the restraint area between the spur and the ink side is small, and the ink at this point is transferred onto the spur at one point, and the next contact point due to the rotation of the spur One point is retransferred onto the recording paper.
〔他の実施例］
第４図、第５図及び第６図、第７図は本発明の他の実施
例を示す。第４図、第５図は先端部の拡大図であり第４
図は角部がＲ形状ものを示す。第５図は当接面も含めて
Ｒ形状相当のものを示す。[Other Embodiments] FIGS. 4, 5, 6, and 7 show other embodiments of the present invention. Figures 4 and 5 are enlarged views of the tip.
The figure shows one with rounded corners. FIG. 5 shows an equivalent to the R shape including the contact surface.
どちらも周面が連続的に紙面に当接し、かつ幅が０．７
ｍｍのものの先端部を示すものであり、この限りにおい
ては、さらに言えば周面ば円でなくても良く多角形でも
長円でも、またベルト状の不定形のものでも良く、要は
当接点近傍に於いてインクとの接触が切れることなく連
続であれば良いことである。In both cases, the peripheral surface is in continuous contact with the paper surface, and the width is 0.7
It shows the tip of a piece of mm, and as far as this goes, the circumferential surface doesn't have to be circular; it can be polygonal, elliptical, or irregularly shaped like a belt, and the point is the contact point. It is good if the contact with the ink is continuous without breaking in the vicinity.
又、画像品位の高いプリントよごれの不可のものにあっ
ては本発明のものが最適であり、多少のよごれを認める
ものであっては、従来例４のものが耐久性などの面から
最適といえる。いずれにせよ従来例１．２．３よりはか
なり良好なレベルな ５
６
示すものである。In addition, for prints with high image quality and no staining, the one of the present invention is most suitable, and for prints with some staining, the conventional example 4 is most suitable from the viewpoint of durability. I can say that. In any case, this is a much better level than Conventional Example 1.2.3.
本発明は、特にインクジェット記録方式の中でもキャノ
ンが提唱しているバブルジェット方式の記録ヘッド、記
録装置に於いて、優れた効果をもたらすものである。The present invention brings about excellent effects particularly in a bubble jet type recording head and recording apparatus, which is proposed by Canon among inkjet recording types.
その代表的な構成や原理については、例えば、米国特許
第４７２３１２９号明細書、同第４７４０７９６号明細
書に開示されている基本的な原理を用いて行うものが好
ましい。この方式は所謂オンデマンド型、コンティニュ
アス型のいずれにも適用可能であるが、特に、オンデマ
ンド型の場合には、液体（インク）が保持されているシ
ートや液路に対応して配置されてい電気熱変換体に、記
録情報に対応していて核沸騰を越える急速な温度上昇を
与える少なくとも一つの駆動信号を印加することによっ
て、電気熱変換体に熱エネルギーを発生せしめ、記録ヘ
ッドの熱作用面に膜沸騰させて、結果的にこの駆動信号
に一対一対応し液体（インク）内の気泡を形成出来るの
で有効である。この気泡の成長、収縮により吐出用開口
を介して液体（インク）を吐出させて、少なくとも一つ
の滴を形成する。この駆動信号をパルス形状とすると、
即時適切に気泡の成長収縮が行われるので、特に応答性
に優れた液体（インク）の吐出が達成でき、より好まし
い。このパルス形状の駆動信号としては、米国特許第４
４６３３５９号明細書、同第４３４５２６２号明細書に
記載されているようなものが適している。尚、上記熱作
用面の温度上昇率に関する発明の米国特許節４３１３１
２４号明細書に記載されている条件を採用すると、更に
優れた記録を行うことができる。As for typical configurations and principles thereof, it is preferable to use the basic principles disclosed in, for example, US Pat. No. 4,723,129 and US Pat. No. 4,740,796. This method can be applied to both the so-called on-demand type and continuous type, but especially in the case of the on-demand type, it is necessary to arrange the liquid (ink) in accordance with the sheet and liquid path that hold it. By applying at least one drive signal to the electrothermal transducer that is not currently being used, the drive signal corresponds to the recorded information and causes a rapid temperature rise exceeding nucleate boiling, thereby causing the electrothermal transducer to generate thermal energy to drive the recording head. This is effective because it causes film boiling on the heat acting surface, resulting in the formation of bubbles in the liquid (ink) in one-to-one correspondence with this drive signal. The growth and contraction of the bubble causes liquid (ink) to be ejected through the ejection opening to form at least one drop. If this drive signal has a pulse shape,
Since the growth and contraction of bubbles is carried out immediately and appropriately, ejection of liquid (ink) with particularly excellent responsiveness can be achieved, which is more preferable. This pulse-shaped drive signal is described in US Pat.
Those described in Japanese Patent No. 463359 and Japanese Patent No. 4345262 are suitable. Incidentally, US Patent Section 43131 of the invention relating to the temperature increase rate of the heat acting surface
If the conditions described in No. 24 are adopted, even better recording can be achieved.
記録ヘッドの構成としては、上述の各明細書に開示され
ているような吐出口、液路、電気熱変換体の組み合わせ
構成（直線状液流路又は直角液流路）の他に熱作用部が
屈曲する領域に配置されている構成を開示する米国特許
第４５５８３３３号明細書、米国特許第４４５９６００
号明細書を用いた構成も本発明に含まれるものである。The configuration of the recording head includes, in addition to the combined configuration of ejection ports, liquid paths, and electrothermal converters (straight liquid flow path or right-angled liquid flow path) as disclosed in the above-mentioned specifications, a heat acting section. US Pat. No. 4,558,333 and US Pat. No. 4,459,600 disclose a configuration in which the
The present invention also includes a configuration using the specification of the above specification.
加えて、複数の電気熱変換体に対して、共通するスリッ
トを電気熱変換体の吐出部とする構成を開示する特開昭
５９年第１２３６７０号公報や熱エネルギーの圧力波を
吸収する開孔な吐出部に対応せる構成を開示する特開昭
５９年第１３８４６１号公報に基づいた構成としても本
発明は有効である。In addition, Japanese Patent Application Laid-open No. 123670 of 1982 discloses a configuration in which a common slit is used as a discharge part for a plurality of electrothermal converters, and a hole that absorbs pressure waves of thermal energy is disclosed. The present invention is also effective as a configuration based on Japanese Patent Application Laid-Open No. 138461 of 1982, which discloses a configuration compatible with a discharge section.
更に、記録装置が記録できる最大記録媒体の幅に対応し
た長さを有するフルラインタイプの記録ヘッドとしては
、上述した明細書に開示されている様な複数記録ヘッド
の組み合わせによって、その長さを満たす構成や一体的
に形成された一個の記録ヘッドとしての構成のいずれで
も良いが、本発明は上述した効果を一層有効に発揮する
ことができる。Furthermore, as a full-line type recording head having a length corresponding to the width of the maximum recording medium that can be recorded by the recording apparatus, the length can be increased by combining multiple recording heads as disclosed in the above-mentioned specification. Either a configuration that satisfies the above requirements or a configuration as a single recording head formed integrally may be used, but the present invention can more effectively exhibit the above-mentioned effects.
又、本発明の記録装置の構成として設けられる。記録ヘ
ッドに対しての回復手段、予備的な補助手段等を付加す
ることは本発明の効果を一層安定できるので好ましいも
のである。これらを具体的に挙げれば、記録ヘッドに対
しての、キャビング手段、クリーニング手段、加圧或は
吸引手段、電気熱変換体或はこれとは別の加熱素子或は
これらの組み合わせによる予備加熱手段、記録とは別の
吐出を行う予備吐出モードを行うことも安定した記録を
行うために有効である。Further, it is provided as a configuration of the recording apparatus of the present invention. It is preferable to add a recovery means, a preliminary auxiliary means, etc. to the recording head, because the effects of the present invention can be further stabilized. Specifically, these include preheating means for the recording head using a caving means, a cleaning means, a pressurizing or suction means, an electrothermal transducer or another heating element, or a combination thereof. It is also effective to perform a preliminary ejection mode in which ejection is performed separately from printing in order to perform stable printing.
更に、記録装置の記録モードとしては黒色等の主流色の
みの記録モードだけではなく、記録ヘッドを一体的に構
成するか複数個の組み合わせによってでもよいが、異な
る色の複色カラー又は、混色によるフルカラーの少なく
とも一つを備えた装置にも本発明は極めて有効である。Furthermore, the recording mode of the recording device is not limited to a recording mode in which only the mainstream color such as black is used; the recording head may be configured integrally or in combination with a plurality of recording heads; The present invention is also extremely effective for devices equipped with at least one full color image.
［発明の効果］
以上説明したように、周面の形状が連続的に印字面に接
する形状であり、かつ周面から０． １ｍｍ内径側の回
転軸方向の幅が０．７ｍｍ以下である紙搬送部材を用い
ることにより、小型・可搬型のプリンターであっても、
又、普通紙に印字比率の高い印字を行っても、又、高温
下等の悪環境ん下であっても拍車跡等の印字汚れをまっ
たく起こさない効果が非常に簡単な原理と構成で可能と
なった。[Effects of the Invention] As explained above, the shape of the circumferential surface is such that it is in continuous contact with the printing surface, and the shape is 0.0 mm from the circumferential surface. By using a paper conveying member with a width of 0.7 mm or less in the direction of the rotation axis on the inner diameter side, even small and portable printers can
In addition, even when printing with a high printing ratio on plain paper, or even in harsh environments such as high temperatures, it is possible to achieve the effect of not causing any print stains such as spur marks etc. with a very simple principle and configuration. It became.
９ ０9 0
第１図は本発明を使用したプリンターの全体の構成説明
図、第２図及びその側面図である第３図は本発明の第１
の実施例の拍車構成説明図、第４図、第５図及び第６図
、第７図は本発明の他の実施例の正面図、側面図の組み
合わせの説明図を示す。第８図は記録媒体上に吐出され
たインク状態を示す図、第９図は拍車表面に付着するイ
ンクのエネルギーレベルを説明するための概略図、第１
０図乃至第１４図は従来拍車例を説明する説明図、第１
５図は従来例での拍車へのインクの転写プロセスを示し
た図、第１６図は黒ベタ部を通過直後の拍車表面に付着
するインクの状態図、第１７図は第１８図の実施例に於
ける拍車表面へのインクの転写の状態を示す図、第１８
図は当接幅が広い場合の拍車を記録媒体の進行方向から
見た図、第１９図は本発明の場合の図である。
８．１１は拍車、１０はインクである。
第１＋図FIG. 1 is an explanatory diagram of the overall configuration of a printer using the present invention, FIG. 2 and a side view thereof FIG.
Fig. 4, Fig. 5, Fig. 6, and Fig. 7 are explanatory drawings of a combination of a front view and a side view of other embodiments of the present invention. FIG. 8 is a diagram showing the state of ink ejected onto a recording medium, FIG. 9 is a schematic diagram for explaining the energy level of ink adhering to the spur surface, and FIG.
Figures 0 to 14 are explanatory diagrams for explaining examples of conventional spurs;
Figure 5 is a diagram showing the ink transfer process to the spur in the conventional example, Figure 16 is a diagram of the state of ink adhering to the spur surface immediately after passing through the black solid area, and Figure 17 is the embodiment of Figure 18. Figure 18 showing the state of ink transfer to the spur surface in
The figure is a view of the spur when the contact width is wide, viewed from the direction in which the recording medium travels, and FIG. 19 is a view of the case of the present invention. 8.11 is a spur, 10 is ink. Figure 1+
Claims (2)
記録装置の記録媒体の搬送系に用いられ、かつ被印字後
の記録媒体面に当接し、回転する搬送用部材で、かつそ
の周面の形状が連続的に記録媒体に当接する形状であり
、周面より０．１ｍｍ内径側での回転軸方向の幅が０．
７ｍｍ以下であることを特徴とするインクジェット記録
装置用搬送系部材。(1) A conveyance member that is used in the conveyance system of a recording medium of an inkjet recording apparatus that performs recording by ejecting ink droplets, and that rotates and comes into contact with the surface of the recording medium after being printed. The shape is such that it comes into continuous contact with the recording medium, and the width in the direction of the rotational axis at the inner diameter side of 0.1 mm from the circumferential surface is 0.1 mm.
A conveyance system member for an inkjet recording device, characterized in that the diameter is 7 mm or less.
用して液滴を形成する記録液を用いて像を形成するバブ
ルジェット方式である請求項（１）記載の記録装置。(2) The recording apparatus according to claim 1, wherein the inkjet recording apparatus is of a bubble jet type that forms an image using a recording liquid that forms droplets using thermal energy.
Priority Applications (8)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9548290A JP2994686B2 (en) | 1990-04-11 | 1990-04-11 | Ink jet recording device |
| AT90310157T ATE178272T1 (en) | 1989-09-18 | 1990-09-17 | ROTATABLE CONVEYING ELEMENT FOR AN INK PRINTING DEVICE |
| DE69033028T DE69033028T2 (en) | 1989-09-18 | 1990-09-17 | Rotatable conveyor element for an ink printing device |
| CA002025547A CA2025547C (en) | 1989-09-18 | 1990-09-17 | Conveying rotational member for an ink recording apparatus, and ink recording apparatus having the same |
| EP90310157A EP0419185B1 (en) | 1989-09-18 | 1990-09-17 | Conveying rotational member for an ink recording apparatus |
| KR1019900014760A KR930011860B1 (en) | 1989-09-18 | 1990-09-18 | Conveying rotational member for an ink-jet recording apparatus and ink-jet recording apparatus with said member |
| AU62636/90A AU651561B2 (en) | 1989-09-18 | 1990-09-18 | Conveying rotational member for an ink recording apparatus, and ink recording apparatus having the same |
| US08/488,461 US5850233A (en) | 1989-09-18 | 1995-06-07 | Conveying rotational member for an ink recording apparatus, and ink recording apparatus having the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9548290A JP2994686B2 (en) | 1990-04-11 | 1990-04-11 | Ink jet recording device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03293136A true JPH03293136A (en) | 1991-12-24 |
| JP2994686B2 JP2994686B2 (en) | 1999-12-27 |
Family
ID=14138835
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9548290A Expired - Fee Related JP2994686B2 (en) | 1989-09-18 | 1990-04-11 | Ink jet recording device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2994686B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8955966B2 (en) | 2013-02-28 | 2015-02-17 | Brother Kogyo Kabushiki Kaisha | Recording apparatus |
| US8955965B2 (en) | 2013-02-28 | 2015-02-17 | Brother Kogyo Kabushiki Kaisha | Recording apparatus |
-
1990
- 1990-04-11 JP JP9548290A patent/JP2994686B2/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8955966B2 (en) | 2013-02-28 | 2015-02-17 | Brother Kogyo Kabushiki Kaisha | Recording apparatus |
| US8955965B2 (en) | 2013-02-28 | 2015-02-17 | Brother Kogyo Kabushiki Kaisha | Recording apparatus |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2994686B2 (en) | 1999-12-27 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |