JP3020965B2 - Ink jet recording device - Google Patents
Ink jet recording deviceInfo
- Publication number
- JP3020965B2 JP3020965B2 JP1241048A JP24104889A JP3020965B2 JP 3020965 B2 JP3020965 B2 JP 3020965B2 JP 1241048 A JP1241048 A JP 1241048A JP 24104889 A JP24104889 A JP 24104889A JP 3020965 B2 JP3020965 B2 JP 3020965B2
- Authority
- JP
- Japan
- Prior art keywords
- recording medium
- spur
- ink
- peripheral surface
- outer peripheral
- 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 - Fee Related
Links
Landscapes
- Ink Jet (AREA)
- Handling Of Cut Paper (AREA)
- Delivering By Means Of Belts And Rollers (AREA)
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明は、紙、フィルム等の記録媒体にインク液滴を
吐出して該記録媒体に記録を行うインクジェット記録装
置に関し、特に、記録媒体の搬送案内する回転可能な拍
車に関する。Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an ink jet recording apparatus that performs recording on a recording medium such as paper or film by discharging ink droplets on the recording medium. The present invention relates to a rotatable spur for guiding conveyance.
〔従来の技術〕 従来例１ 従来インクジエツ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、ピンフイード
タイプのものもある。[Prior art] Conventional example 1 In a conventional ink jet printer, after an ink droplet is ejected on a recording medium, nothing is brought into contact with a printing surface of the recording medium, In many cases, spurs and other parts were brought into contact with the parts. 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エツ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 For the type in contact with the printable area of the surface to be printed, not a plain paper but a paper dedicated to ink jet typified by a coated paper having a good fixing property,
Further, a heat source such as a fixing device for accelerating the drying of the ink is usually provided.
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が
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 Also, if the printing speed is slow and the time required to reach the spur is sufficiently long, and the ink dries and is fixed during that time, there is a possibility that it can be used in a normal environment. However, spurs of this type are usually
Reduce the contact area as much as possible with the printing surface of the recording medium, reduce the transferable area as much as possible to reduce the probability of hitting the printed lines and characters, and if the ink is transferred to the spur, The peripheral surface in contact with the recording medium as shown in FIGS. 11 and 13 is thin and sharp, so that the amount of the ink transferred by rotation and re-transferred to the recording medium and stains the printing surface is minimized. It had a star shape with a discontinuous circumference.
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。However, the conventional example described above has various disadvantages.
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、特に高湿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、ジヤムを起こして
しまうことが多々発生してしまった。In the case of the conventional example 1 having no spur, the paper was discharged on the paper discharge side of the recording apparatus particularly under high humidity conditions or when long paper such as roll paper was used. In the case where the slip at the tip of the recording medium becomes worse and the flow does not go smoothly, the recording medium will bend, and originally there is only about 0.8 mm between the recording head and the recording medium.
The probability that the recording medium comes into contact with the recording head and stains the surface to be printed has become extremely high. or,
In a severe case, the recording medium is stuck, which often causes a jam.
又、印字デユーテイーが高いベタ印字やグラフイクス
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ヤツプが狭くなり、排紙が不
安定だと印字面を汚す確率が高くなっていた。Also, when printing such as solid printing or graphics with high printing duty, the recording medium also causes deformation such as cockling and the printing surface rises slightly,
If the gap between the recording heads is further reduced, and the ejection is unstable, the probability of soiling the printing surface increases.
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。Further, the conventional example 1 in which the spurs abut outside the recordable range at both ends of the recording medium has a major drawback in that the printable range is first 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。Further, in a large-size device such as an A3 size or an A2 size, the paper discharge property at the center is reduced, so that a paper discharge failure occurs and the above-described troubles are easily caused.
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 according to the paper width, which is extremely troublesome, and if the setting is rough, it will enter the printing range and stain the printing surface. There was a disadvantage.
従来例２のものに於いては、インクジエツト専用紙の
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
イードのものでは、ハガキやカツト紙、OHPフイルム等
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。In the case of the conventional example 2, the ink absorbing capacity is very high because of the ink jet dedicated paper, and it is unlikely that a problem is originally caused. In addition, the pin feeder cannot cope with various types of recording media such as postcards, cut sheets, 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。Further, in the conventional example 3, all the drawbacks as in the above-mentioned conventional examples 1 and 2 can be solved, but there is a major drawback that it can be basically applied only to a low-speed machine having a low printing speed.
又、近年は小型可搬型のラツプトツプ型パソコンやワ
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が
強い。その為に記録ヘツドと拍車の位置が第10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 recent years, OA equipment such as small portable laptop computers and word processors has been increasing, and naturally, small and portable types of output devices have been demanded. In particular, there is a strong tendency to become thinner. Therefore, the position of the recording head and the spur are very close as shown in Fig. 10, and even if it is a low-speed machine, the printing surface is sent to the spur position after printing in about 2 seconds and reaches. It has become like putting it.
その為に、キヤ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、グラフイツクス印字やベ
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、ほ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, ink transfer to the spur occurs even in printing of about the character, so that discontinuous points such as dotted lines and so-called spur marks appear in the main scanning direction of the recording medium. . Furthermore, after printing with a high printing ratio such as graphics printing and solid printing, it became very noticeable, and when used under high humidity, it became a level that could not be realized as a product . In addition, naturally, the same applies to a high-speed machine with a fast paper feed.In a color machine, if the color differs between the previous print line and the next print line, the ink of the previous line is transferred to the spur. To mix with the next line of ink,
With CMY-based inks, the color will be completely different, or the black ink will bleed over a lighter color, making it almost unusable as a product.
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 been no method for simultaneously solving both the trouble of the paper feeding system and the trouble of the spur mark on the printing surface.
かかる目的を達成するために、本発明は、インク液滴
を記録媒体へ吐出して該記録媒体に記録を行うインクジ
ェット記録装置において、前記記録媒体を搬送する記録
媒体搬送路と、前記記録媒体搬送路にある前記記録媒体
に吐出された前記インク液滴と接触可能な位置に配さ
れ、前記記録媒体に対して連続して点接触しつつ当該記
録媒体の搬送案内をするための環状連続外周面を備え、
該環状連続外周面の側端と前記記録媒体とのなす角が45
°以上且つ水に対する接触角が60°以上の撥水性を備え
る回転可能な拍車と、を有し、前記拍車の環状連続外周
面は、前記記録媒体と点接触して回転する際に、前記記
録媒体と前記インク液滴との付着力及び前記インク液滴
の表面張力による凝集力により、当該環状連続外周面へ
の前記インク液滴の転写を防止する構成を採用した。In order to achieve the above object, the present invention provides an ink jet recording apparatus that discharges ink droplets onto a recording medium and performs recording on the recording medium. An annular continuous outer peripheral surface that is arranged at a position where it can come into contact with the ink droplets ejected on the recording medium in a path, and guides the conveyance of the recording medium while making continuous point contact with the recording medium; With
The angle between the side end of the annular continuous outer peripheral surface and the recording medium is 45
And a rotatable spur having a water repellency having a contact angle to water of 60 ° or more, wherein the annular continuous outer peripheral surface of the spur rotates in point contact with the recording medium, and A configuration is employed in which the transfer of the ink droplets to the annular continuous outer peripheral surface is prevented by the adhesive force between the medium and the ink droplets and the cohesive force due to the surface tension of the ink droplets.
本発明に係るこの構成により、以下のことが見出され
た。即ち、拍車とインク液滴との間での表面の結合力
と、インク液滴と記録媒体との間での結合力と、インク
そのものの凝集力と、で「付着するあるいは付着しな
い」の力のバランスがあり、記録媒体に対して連続して
点接触する環状連続外周面の側端と記録媒体とのなす角
が45°以上且つ水に対する接触角が60°以上の撥水性を
備える回転可能な拍車がインク液滴と接触した場合は、
この力のバランスの特性を利用することによって、拍車
が動く際の該拍車へのインク付着力が常に低くなるよう
にすることができ、拍車へのインク液滴の非転写を図る
ことができる。With this configuration according to the present invention, the following has been found. That is, the "adhering or non-adhering" force due to the surface bonding force between the spur and the ink droplet, the bonding force between the ink droplet and the recording medium, and the cohesive force of the ink itself. Rotating with water repellency, the angle between the side edge of the annular continuous outer peripheral surface that makes continuous point contact with the recording medium and the recording medium is 45 ° or more and the contact angle with water is 60 ° or more If a spur comes into contact with an ink drop,
By utilizing the characteristic of this force balance, it is possible to always reduce the ink adhesion force to the spur when the spur moves, and to achieve non-transfer of ink droplets to the spur.
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は記録ヘツドとインクタンクが一体
となったカートリツジであり、２はカートリツジを乗せ
て副送査方向ヘスキヤンする為のキヤリツジであり、３
はそのキヤリツジのガイド軸であり、４はメカのベース
のシヤーシを示す。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図より明らかなようなそろばん玉形状の拍車を取り
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10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。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。1 to 2 show a first embodiment of the present invention,
FIG. 1 shows the overall configuration of a printer using the present invention. Reference numeral 1 denotes a cartridge in which a recording head and an ink tank are integrated, and 2 denotes a cartridge for mounting the cartridge and scanning in the sub-scanning direction. Carriage, 3
Is a guide shaft of the carriage, and 4 is a mechanical base chassis. Reference numeral 5 denotes a platen roller for conveyance, and reference numerals 6 and 7 also denote rollers for conveyance. Reference numeral 8 denotes a spur according to the embodiment of the present invention, to which an abacus ball-shaped spur as apparent from FIG. 2 and a side view thereof is attached. 9 is a guide for conveyance. P indicates a recording medium. In addition, reference numeral 10 in FIG. 8 denotes the ink ejected on the recording medium. Reference numeral 11 in FIG. 10 denotes a conventional spur, and shows a state where the spur shown in FIG. 11 and its side view, FIG. 12, are attached. FIG. 13 and FIG. 14 which is a side view thereof show another conventional example, and FIG. 15 shows a process of transferring ink to a spur in the conventional example.
表１は本実施例に於ける第２図の形状かつテーパー部
の印字面とのなす角が80°のもので紙面に対する当接圧
を20gに設定して表面の撥水性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イ
ードを行い拍車跡が出たかどうかのテストである。Table 1 shows that in this embodiment, the sample having the shape shown in FIG. 2 and the taper portion forming an angle of 80 ° with the printing surface, the contact pressure against the paper surface was set to 20 g, and the samples having different water repellency on the surface were subjected to humidity. In this test, a home feed was performed immediately after a solid black line was printed in a different environment, and a test was performed to determine whether a spur mark appeared.
表２は同様のテストを第11図の形状で他の条件を同じ
にして行ったもの。Table 2 shows the results of a similar test performed using the shape shown in FIG. 11 under the same other conditions.
表３は表１で示したテストに対して、拍車の表面粗さ
を変化させたもの。Table 3 shows the test shown in Table 1 with the spur surface roughness changed.
表４は表１で示したテストに対して撥水性110°のも
のを使用してテーパー部の印字面とのなす角を変化させ
たものである。Table 4 shows the test shown in Table 1 in which the angle between the tapered portion and the printing surface was changed by using a sample having a water repellency of 110 °.
撥水性のテストはパラメータとして水に対する接触角
を目安として行った。当接圧のテストは印字面に対する
各拍車の１つ当りの全圧で示した。The water repellency test was performed using the contact angle with water as a guideline as a parameter. The contact pressure test was expressed as the total pressure per spur on the printing surface.
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図に示す様にセツトされた
後に１の記録ヘツドを内蔵したカートリツジが２のキヤ
リツジの副送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
より記録媒体が主送査方向へ送られる。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, the operation of the above construction will be described. After the recording medium indicated by P in FIG. 1 is set as shown in FIG. One line printing is performed on the P recording medium by the movement in the inspection direction. Next, as the platen roller 5 rotates, the recording medium is sent in the main scanning direction. In the small portable type apparatus as shown in FIG. 1 of this embodiment, as described above, immediately after printing, the printed portion reaches the position of spur 8.
The situation at that time is shown in FIG. This situation indicates that the ink on which the spur has not been fixed is stationary on the P recording medium.
第９図は次に第８図の状態から主送査方向へ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一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が連続的に
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
きてしまい、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
くびれた部分の段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11の拍車上にインクが転写し
てしまう。FIG. 9 shows a state where the recording medium of P has advanced from the state of FIG. 8 in the main scanning direction, and the spur 8 has started 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 that when the spur is peeled off by rotation, the spur rises more than at rest. However, the shape at this time is a shape in which the hem is widened with the raised point as the vertex. Considering the balance of the force at that time, the shape of the peripheral surface of the spur 8 is a continuous surface, and the spread of the ink itself at the place where the ink 10 is pulled up in proportion to the adhesive force to the spur 8 The cohesive force due to surface tension, which attempts to reduce the ridge of the chevron to reduce the surface area, becomes stronger, and the lower side of the ten inks is constrained by the adhesive force between the ink and the P recording medium over a large area. As a result, it is dragged down while sliding toward the P recording medium. As a result, the ink can be used without being transferred onto the spur 8. If there is a discontinuous surface in the shape of the peripheral surface as in the case of the conventional spur, the above-mentioned force balance is momentarily lost, so that the ink at that point is left on the spur. An extreme example is
This is shown in FIG. 15 of the conventional example. In this case, the force that the attached ink continuously drags down because of the discontinuous surface is continuous as in the present invention, and the ridge of the mountain shape has a small swelling and appears at each contact point. The ink is lifted almost vertically from the printing surface, and a constriction occurs between the ink 10-a on the spur 11 and the ink 10-a on the P recording medium. Since the step area of the ink becomes the smallest, the area becomes weakest, and the ink is cut by the cohesive force due to the surface tension of the inks 10-a and 10-b. Therefore, the ink is transferred onto the eleven spurs in principle.
表１〜表４に示したデータは、前述のテスト形式によ
り行った本実施例、従来例をも含めたテストデータを示
す。The data shown in Tables 1 to 4 indicate test data including the present embodiment and the conventional example performed in the above-described test format.
表１によれば、他のパラメータを固定した場合には、
本実施例においては60°以上の水に対する接触角をもっ
た撥水性の拍車を用いれば、まったく環境湿度によるイ
ンクの定着性の良し悪しに関係しない拍車を得られるこ
とがわかる。逆に表２に示す様に従来タイプの拍車に於
いては、110°以上の撥水性の非常に高い拍車を使用し
ても転写が起きてしまい、データーに環境湿度依存性が
あることがわかる。これは前述の原理から考えてみれば
明らかなことであり、本発明に於ける拍車は、インク液
中を転がしても前述の原理によりもともと転写されない
訳であるから高湿下の未定着インクの上を通過しても良
い訳である。表１の高湿下で接触角30°の所でNGになっ
ているのはこの近傍に撥水性のパラメータによる良し悪
しの境目が本実施例の設定にあってあったと考えられ
る。According to Table 1, when other parameters are fixed,
In this embodiment, it is found that a spur having no contact angle with respect to the quality of ink due to environmental humidity can be obtained by using a water-repellent spur having a contact angle with water of 60 ° or more. Conversely, as shown in Table 2, in the conventional type spur, even when a spur having a very high water repellency of 110 ° or more is used, the transfer occurs, and it can be seen that the data has an environmental humidity dependency. . This is clear from the above-mentioned principle, and the spur in the present invention is not transferred originally by the above-mentioned principle even when the ink is rolled in the ink liquid. It is good to pass above. It is conceivable that the NG at a contact angle of 30 ° under high humidity in Table 1 was in the vicinity of this point where there was a boundary between good and bad by the water repellency parameter in the setting of the present embodiment.
表２の従来例のデータに於いては、50％RHの常温で11
0°以上の接触角を持ったものを使用すれば良くなって
いるが、このレベルは丁度インクが定着しはじめたレベ
ルで増粘していて、前述の原理に於いて記録媒体上への
付着力の方が少し強くなった為と考えられる。According to the data of the conventional example shown in Table 2, at normal temperature of 50% RH
It is better to use a material with a contact angle of 0 ° or more, but this level is just the level at which the ink has just started to fix, and the viscosity increases at the level at which the ink has just started to be applied. It is considered that the strength was slightly stronger.
又、10％RHの低湿下ですべてOKになっているのは、前
述までの原理によるものではなく、超低湿の為にすでに
乾燥していて転写をすでに起こさなくなっていることに
よる為である。In addition, the reason why all the results are OK under the low humidity of 10% RH is not based on the principle described above, but because the ultra-low humidity has already caused the drying and the transfer no longer occurs.
又、表３は発明の方式による実施例に於いて拍車の表
面粗さを変化させたものであるが、ここでは便宜的にRm
axでの数値をパラメータとしたが、やはり表面粗さが小
さい方がインクを引きずり降ろす力がすべりが良くなり
抵抗が下がるので小さくてすむ為良好となる。表面粗さ
については素材により数値上同じでも粗さの形状等が異
なるとともに、撥水性による付着力との組合せで特にそ
の良し悪しが決定されるものである。Table 3 shows changes in the surface roughness of the spur in the embodiment according to the method of the present invention.
Although the numerical value of ax was used as a parameter, the smaller the surface roughness, the better the slipping force of the ink and the lower the force, and the lower the resistance. Regarding the surface roughness, the shape and the like of the roughness are different depending on the material, even if the numerical values are the same, and the quality of the surface roughness is particularly determined in combination with the adhesive force due to the water repellency.
表４は、印字面とのなす角による変化を示したもので
あるが、やはり印字面に対してできるだけ垂直に近い方
が良い結果となった。これは、インクが拍車から引きず
り降ろされる際に、印字面に対して垂直な方向へ引きは
がし力がかかる為であり、この方向への力がかかりやす
い方が良いという結果となったものである。Table 4 shows the change depending on the angle between the print surface and the print surface. As a result, it is preferable that the print surface be as perpendicular to the print surface as possible. This is because when the ink is dragged down from the spur, a peeling force is applied in a direction perpendicular to the printing surface, and it is better that the force in this direction is more likely to be applied. .
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図及びその側面図である第５図に示し
た拍車は、それぞれの図より明らかなように印字面に接
する部材を円盤状の薄板で構成したものであり、第６図
及びその側面図である第７図に示した拍車は、それぞれ
の図より明らかなように印字面に接する部材を円錐台形
状で構成したものである。どちらも周面が連続的に紙面
に当接するものであり、この当接点近傍において周面と
インク滴との接触が切れることなく連続であるものであ
る。4, 5, 6 and 7 show another embodiment of the present invention. The spurs shown in FIG. 4 and FIG. 5, which is a side view thereof, have a member in contact with the printing surface formed of a disc-shaped thin plate, as is clear from the respective figures. The spur shown in FIG. 7 has a member in contact with the printing surface in the shape of a truncated cone, as is clear from the respective drawings. In both cases, the peripheral surface is continuously in contact with the paper surface, and the contact between the peripheral surface and the ink droplet is continuous without being cut off near the contact point.
〔発明の効果〕 以上、詳述したように、本発明に係る拍車は、記録媒
体搬送路にある記録媒体に吐出されたインク液滴と接触
可能な位置に配され、記録媒体に対して連続して点接触
しつつ当該記録媒体の搬送案内をするための環状連続外
周面を備え、該環状連続外周面の側端と前記記録媒体と
のなす角が45°以上且つ水に対する接触角が60°以上の
撥水性を備える回転可能な拍車であって、その拍車が記
録媒体と点接触して回転する際に、記録媒体とインク液
滴との付着力及びインク液滴の表面張力による凝集力に
より、当該環状連続外周面へのインク液滴の転写を防止
することができた。そのため、当該拍車が記録媒体に吐
出され付着しているインク液滴に接触しつつ記録媒体の
搬送を案内した場合でも、拍車へのインク液滴の転写が
ないので、拍車から記録媒体へのインク液滴の再転写と
いうこともなく、インク液滴の再転写によって生じる印
字汚れの発生を防止することができた。これにより、記
録媒体のインク記録可能領域内外を問わず搬送案内部材
を配することができ、良好な記録媒体搬送性及び案内性
を得るとともに、記録装置の小型化を図ることができ
た。[Effects of the Invention] As described above in detail, the spur according to the present invention is arranged at a position where it can come into contact with ink droplets ejected on the recording medium in the recording medium transport path, and is continuously connected to the recording medium. An annular continuous outer peripheral surface for guiding the conveyance of the recording medium while making point contact therewith, wherein the angle between the side end of the annular continuous outer peripheral surface and the recording medium is 45 ° or more and the contact angle with water is 60 °. A rotatable spur having a water repellency of at least °, and when the spur rotates in point contact with the recording medium, the adhesion between the recording medium and the ink droplets and the cohesive force due to the surface tension of the ink droplets Thereby, transfer of ink droplets to the annular continuous outer peripheral surface could be prevented. Therefore, even if the spur guides the conveyance of the recording medium while contacting the ink droplets ejected and adhered to the recording medium, there is no transfer of the ink droplets to the spur, and the ink from the spur to the recording medium is not transferred. It was possible to prevent the occurrence of printing stains caused by the retransfer of ink droplets without retransferring the droplets. As a result, the conveyance guide member can be arranged regardless of the inside and outside of the ink recordable area of the recording medium, and good recording medium conveyance and guidance can be obtained, and the size of the recording apparatus can be reduced.
更に、記録媒体の記録面に対するインク記録面積比率
の高いインクジェット記録を実行した場合、あるいは高
湿下等の悪環境下の場合であっても、拍車ヘインク液滴
が転写した後に記録媒体に再転写することによって生じ
る印字汚れの発生を防止することができた。Furthermore, even when performing ink-jet printing having a high ink recording area ratio with respect to the recording surface of the recording medium, or in a bad environment such as high humidity, the ink droplets are transferred to the recording medium after being transferred to the spur. Thus, it was possible to prevent the occurrence of printing stains caused by the above.
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
合わせの説明図、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10図乃至
第14図は従来拍車例を説明する説明図、第15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である。 ８、11は拍車、10はインク。FIG. 1 is an explanatory view of the overall configuration of a printer using the present invention, FIG. 2 and a side view thereof, FIG. 3 is an explanatory view of a spur configuration of a first embodiment of the present invention, FIG. 5 and 6
FIG. 7, FIG. 7 is an explanatory view of a combination of a front view and a side view of another embodiment of the present invention, FIG. 8 is a view showing an ink state ejected on a recording medium, and FIG. FIGS. 10 to 14 are schematic diagrams for explaining the energy level of the attached ink, FIGS. 10 to 14 are explanatory diagrams for explaining an example of a conventional spur, and FIG. 15 is a diagram showing a process of transferring the ink to the spur in the conventional example. It is. 8, 11 are spurs, 10 is ink.
Claims (3)
体に記録を行うインクジェット記録装置において、 前記記録媒体を搬送する記録媒体搬送路と、 前記記録媒体搬送路にある前記記録媒体に吐出された前
記インク液滴と接触可能な位置に配され、前記記録媒体
に対して連続して点接触しつつ当該記録媒体の搬送案内
をするための環状連続外周面を備え、該環状連続外周面
の側端と前記記録媒体とのなす角が45°以上且つ水に対
する接触角が60°以上の撥水性を備える回転可能な拍車
と、 を有し、前記拍車の環状連続外周面は、前記記録媒体と
点接触して回転する際に、前記記録媒体と前記インク液
滴との付着力及び前記インク液滴の表面張力による凝集
力により、当該環状連続外周面への前記インク液滴の転
写を防止することを特徴とするインクジェット記録装
置。1. An ink jet recording apparatus for recording on a recording medium by discharging ink droplets onto the recording medium, comprising: a recording medium transport path for transporting the recording medium; An annular continuous outer peripheral surface which is disposed at a position capable of contacting the ejected ink droplets and continuously guides the recording medium while being in point contact with the recording medium; A rotatable spur having a water repellency wherein an angle between a side end of the surface and the recording medium is 45 ° or more and a contact angle with water is 60 ° or more, and the annular continuous outer peripheral surface of the spur is When rotating while being in point contact with a recording medium, transfer of the ink droplets to the annular continuous outer peripheral surface due to the adhesive force between the recording medium and the ink droplets and the cohesive force due to the surface tension of the ink droplets Characterized by preventing An ink jet recording apparatus.
を特徴とする請求項１に記載のインクジェット記録装
置。2. An ink jet recording apparatus according to claim 1, wherein said spur has an abacus ball shape.
盤状部材の外周面であることを特徴とする請求項１に記
載のインクジェット記録装置。3. An ink jet recording apparatus according to claim 1, wherein said spur is such that said annular continuous outer peripheral surface is an outer peripheral surface of a thin disk-shaped member.
Priority Applications (9)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1241048A JP3020965B2 (en) | 1989-09-18 | 1989-09-18 | Ink jet recording device |
| DE69033028T DE69033028T2 (en) | 1989-09-18 | 1990-09-17 | Rotatable conveyor element for an ink printing device |
| AT90310157T ATE178272T1 (en) | 1989-09-18 | 1990-09-17 | ROTATABLE CONVEYING 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 |
| CN 90107837 CN1027241C (en) | 1989-09-18 | 1990-09-18 | Transfering rotation parts used in ink printing mechanisms and that with same parts |
| 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 |
|---|---|---|---|
| JP1241048A JP3020965B2 (en) | 1989-09-18 | 1989-09-18 | Ink jet recording device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03101943A JPH03101943A (en) | 1991-04-26 |
| JP3020965B2 true JP3020965B2 (en) | 2000-03-15 |
Family
ID=17068535
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1241048A Expired - Fee Related JP3020965B2 (en) | 1989-09-18 | 1989-09-18 | Ink jet recording device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3020965B2 (en) |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59171950U (en) * | 1983-04-30 | 1984-11-16 | シャープ株式会社 | Paper transport mechanism in inkjet printers |
| JPS59190544U (en) * | 1983-06-03 | 1984-12-18 | 日立工機株式会社 | Inkjet printer paper holding device |
-
1989
- 1989-09-18 JP JP1241048A patent/JP3020965B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH03101943A (en) | 1991-04-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US6318853B1 (en) | Image forming apparatus having intermediate medium | |
| JP5838593B2 (en) | Printing apparatus and printing method | |
| KR930011860B1 (en) | Conveying rotational member for an ink-jet recording apparatus and ink-jet recording apparatus with said member | |
| JP2002137378A (en) | Image recorder | |
| JP2000272110A (en) | Ink jet recorder and ejection recovery method therefor | |
| JP3022849B2 (en) | Printer | |
| US6908168B2 (en) | Inkjet printing apparatus, inkjet printing method and program | |
| US6619796B2 (en) | Starwheel actuation timing for print media transport system and method | |
| JP3020965B2 (en) | Ink jet recording device | |
| JP4001679B2 (en) | Paper transport device | |
| US20200277146A1 (en) | Marking transport cleaning pad | |
| JP3109851B2 (en) | Inkjet printer | |
| JP2994686B2 (en) | Ink jet recording device | |
| JP2006327028A (en) | Recorder | |
| JP3043905B2 (en) | Printer | |
| JP2018140627A (en) | Inkjet recording device and method for recovering inkjet recording device | |
| JPH06328794A (en) | Recording device | |
| JP2012062177A (en) | Recorder | |
| US6854907B2 (en) | Method for removing roll-set curl for two-sided printing | |
| US20040001216A1 (en) | Method for preventing repeat printing to a document | |
| JPH07132659A (en) | Sheet delivering device for printer | |
| JPH03293175A (en) | Ink jet recording apparatus | |
| JP2000238927A (en) | Ink jet recording device | |
| JP2003145867A (en) | Device for transferring material to be recorded and ink jet recorder using the same | |
| JP2002067419A (en) | Ink jet recorder |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20090114 Year of fee payment: 9 |
|
| LAPS | Cancellation because of no payment of annual fees |