JP2003136697A - Recorder - Google Patents
RecorderInfo
- Publication number
- JP2003136697A JP2003136697A JP2001337780A JP2001337780A JP2003136697A JP 2003136697 A JP2003136697 A JP 2003136697A JP 2001337780 A JP2001337780 A JP 2001337780A JP 2001337780 A JP2001337780 A JP 2001337780A JP 2003136697 A JP2003136697 A JP 2003136697A
- Authority
- JP
- Japan
- Prior art keywords
- thickness
- ink
- recording
- variable information
- recording medium
- 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
Landscapes
- Ink Jet (AREA)
- Ink Jet Recording Methods And Recording Media Thereof (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は記録装置に関し、特
にインクジェット記録と他方式の画像形成装置による記
録を組み合わせた記録装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a recording apparatus, and more particularly to a recording apparatus which combines ink jet recording and recording by an image forming apparatus of another type.
【０００２】[0002]
【従来の技術】最近、固定情報となる共通の文字絵柄部
分を予めオフセット印刷、凸版印刷等で被記録体に印刷
しておき、更に顧客等のニーズに応じて必要な情報のみ
を可変情報として被記録体に加えて印刷する、いわゆる
追い刷り印刷が行われるようになっている。可変情報は
電子写真プリンタやインクジェットプリンタ等、一部毎
に異なった内容（可変情報）を印刷することが可能なプ
リンタにて記録される。2. Description of the Related Art Recently, a common character pattern portion which becomes fixed information is printed on a recording medium by offset printing, letterpress printing or the like in advance, and only necessary information is changed as variable information according to needs of customers. So-called overprinting is performed in which printing is performed in addition to recording material. The variable information is recorded by a printer capable of printing different contents (variable information) for each part, such as an electrophotographic printer or an inkjet printer.
【０００３】このような被記録体上の予め記録された固
定情報に可変情報を付加する印刷方法および印刷装置に
関しては、特開平１０−５８６５２号公報に開示されて
いる。A printing method and a printing apparatus for adding variable information to previously recorded fixed information on such a recording medium is disclosed in JP-A-10-58652.
【０００４】[0004]
【発明が解決しようとする課題】上記公報においては、
固定情報を記録する手段として紫外線硬化性の樹脂が用
いられているが、可変情報を記録する手段として紫外線
硬化性の樹脂を使用し、インクジェットで印刷する点に
ついて開示されていない。従って、顧客が必要とする可
変情報を任意に印刷した場合に、固定情報に対して極め
て低い画質の印刷物を提供することとなってしまう。SUMMARY OF THE INVENTION In the above publication,
Although an ultraviolet curable resin is used as a means for recording fixed information, it is not disclosed that an ultraviolet curable resin is used as a means for recording variable information and printing is performed by ink jet. Therefore, when the variable information required by the customer is arbitrarily printed, a printed matter with extremely low image quality is provided for the fixed information.
【０００５】また、上記公報においては、可変情報を記
録するインクと被記録体の関係については言及されてい
ない。インクジェット記録はインク種、被記録体の種類
によって印刷品質が大きく異なるため、この点について
無視してしまうと、高画質の印刷物を提供することはで
きない。Further, the above publication does not mention the relationship between the ink for recording variable information and the recording medium. Inkjet recording has a great difference in print quality depending on the type of ink and the type of recording medium. Therefore, if this point is neglected, it is not possible to provide a high-quality printed matter.
【０００６】一方、本発明の如く、紫外線や電子線等で
インクを硬化させる方式は、可変情報を付加する際の被
記録体に対応できるインクジェット用インクとして追い
刷りに適するが、高速性を重視するあまり、インク滴の
吐出とほぼ同時に硬化されるため、インク滴が指触で判
別できる程度のドーム状の形状を有したまま被記録体に
定着されてしまう可能性がある。この傾向はインクを吸
収する層がない被記録体で特に強い。このようなドーム
状に形成されたインク滴よりなる印刷物においては、多
量枚数を積み重ねてを保管する際に、インクの裏写りや
よごれ、他の被記録体への張り付きや擦り汚れが発生す
るばかりか、被記録体を複数重ねた場合に可変情報印刷
部のみの盛り上がりにより被記録体への制定や収納に支
障をきたしたりしていた。On the other hand, the method of curing the ink with ultraviolet rays or electron beams as in the present invention is suitable for overprinting as an ink jet ink that can be applied to a recording medium when variable information is added, but high speed is important. Since the ink droplets are hardened almost at the same time as the ink droplets are ejected, there is a possibility that the ink droplets may be fixed on the recording medium while having a dome-shaped shape that can be discerned by a finger touch. This tendency is particularly strong in a recording medium having no ink absorbing layer. In a printed matter composed of such ink droplets formed in a dome shape, when a large number of sheets are stacked and stored, the show-through and dirt of the ink, sticking to other recording medium and rubbing stain are not only generated. Or, when a plurality of recording media are stacked, the bulge of only the variable information printing section may hinder establishment and storage in the recording media.
【０００７】以上より、本発明の目的は、インクジェッ
ト記録と他方式の画像形成装置による記録を組み合わせ
た記録装置において、印刷品質および保管性能が良好な
印刷物を作成する記録装置を提供することにある。In view of the above, an object of the present invention is to provide a recording apparatus which combines ink jet recording and recording by an image forming apparatus of another system and produces a printed matter having good print quality and storage performance. .
【０００８】[0008]
【課題を解決するための手段】上記課題を解決するため
本発明においては、被記録体上の固定情報の印刷領域外
に可変情報を印刷する可変情報印刷部を有する記録装置
において、前記可変情報記録部を紫外線や電子線等を照
射することにより硬化する特性を有するインクを吐出す
るインクジェットヘッドとした。In order to solve the above problems, according to the present invention, in a recording apparatus having a variable information printing unit for printing variable information outside a fixed information printing area on a recording medium, the variable information is provided. The ink jet head ejects an ink having a property of being cured by irradiating the recording portion with ultraviolet rays, electron beams, or the like.
【０００９】また、可変情報記録部にて印刷される被記
録体上のインク滴の厚みを固定情報の厚みの±１５μｍ
とするか、インク滴自体の厚みを１５μｍ以下にすると
よい。なお、この手段は研磨、加圧、加熱、または補助
インクジェットヘッドおよび補助露光機を備え、または
この組み合わせであってもよい。あるいは、被記録体が
０．７(ｍｌ／ｍ２)／(ｍｓ)０．５より大きいインク吸
収係数を有するものを使用してインク滴の高さを調節す
るとよい。Further, the thickness of the ink droplets on the recording medium printed by the variable information recording unit is set to ± 15 μm of the thickness of the fixed information.
Alternatively, the thickness of the ink droplet itself may be 15 μm or less. It should be noted that this means may include polishing, pressurization, heating, or an auxiliary inkjet head and an auxiliary exposure device, or a combination thereof. Alternatively, the height of the ink droplets may be adjusted by using a recording medium having an ink absorption coefficient larger than 0.7 (ml / m 2 ) / (ms) 0.5 .
【００１０】[0010]
【発明の実施の形態】この本発明において使用するイン
クは、紫外線、電子線、その他の放射線等のエネルギに
よって重合（硬化）する特性を有するものを意味する。
また、図１に示すように、本発明の印刷物は固定情報と
可変情報を同一の被記録体に印刷することにより得られ
るものである。よって、固定情報が非接触で記録が可能
な場合（例えばインクジェット方式）や、可変情報のイ
ンクの転写が発生しない状況下で記録を行う場合には、
記録の順番は特に問題にならない。BEST MODE FOR CARRYING OUT THE INVENTION The ink used in the present invention means one having a property of being polymerized (cured) by energy such as ultraviolet rays, electron beams and other radiation.
Further, as shown in FIG. 1, the printed matter of the present invention is obtained by printing fixed information and variable information on the same recording medium. Therefore, when the fixed information can be recorded in a non-contact manner (for example, an ink jet method), or when recording is performed in a situation where the transfer of the variable information ink does not occur,
The order of recording does not matter.
【００１１】本発明において、印刷された可変情報のイ
ンクの厚みは、既に印刷されている固定情報の記録と同
等であることが望ましく、具体的には固定情報の印刷の
厚みの±１５μｍにするとよい。特に望ましいのは−３
〜１０μｍ、さらに望ましくは−１〜８μｍである。こ
れより大きい場合は被記録体の可変情報を印刷した所定
の領域だけが厚くあるいは薄くなり、積み重ねた印刷物
が多くなるに従い安定した形状を保ちにくく保管性能が
劣る。また、特に厚い場合は可変情報のインクの凸部が
被記録体と接触し、擦られることにより、インクの裏写
りやよごれ、被記録体への張り付きを生じやすくなる。
一方、薄い場合は、可変情報のインパクトが低くなる。
すなわち、固定情報の厚さが印刷物の厚さにほぼ等しい
場合には、インク滴の厚みは１５μｍ以下にするとよ
く、硬化が効率良く行える点でも好ましい。これに対し
て、固定情報の厚みが、印刷が発泡印刷や浮き出し印刷
のように４０μｍ以上と厚い場合は、固定情報の印刷の
厚みの±１５μｍとするのがよい。In the present invention, it is desirable that the thickness of the printed variable information ink is equivalent to the recording of the fixed information that has already been printed. Specifically, when the fixed information printing thickness is ± 15 μm. Good. Especially desirable is -3
The thickness is from 10 μm to 10 μm, and more preferably from −1 to 8 μm. If it is larger than this, only the predetermined area where the variable information of the recording medium is printed becomes thick or thin, and it becomes difficult to maintain a stable shape and the storage performance becomes poor as the number of stacked printed matters increases. Further, when the thickness is particularly thick, the convex portion of the ink of the variable information comes into contact with the recording medium and is rubbed, so that the show-through and dirt of the ink and the sticking to the recording medium are likely to occur.
On the other hand, when it is thin, the impact of variable information is low.
That is, when the thickness of the fixed information is approximately equal to the thickness of the printed matter, the thickness of the ink droplets should be 15 μm or less, which is also preferable in that curing can be performed efficiently. On the other hand, when the thickness of the fixed information is as thick as 40 μm or more as in the case of foaming printing or embossed printing, the thickness of the fixed information is preferably ± 15 μm.
【００１２】以下、本発明を実現するための記録装置の
一例について図２を参照して説明する。An example of the recording apparatus for realizing the present invention will be described below with reference to FIG.
【００１３】図２において、１はインクジェット記録装
置を示す。固定情報を記録した被記録体８は給紙部２か
ら、搬送ベルト６により搬送される。インクジェットヘ
ッド３により可変情報を記録して、露光機４で記録と同
時または記録直後に硬化・定着を行う。インクジェット
ヘッド３または露光機４の近傍には可変情報のインクの
厚みを検出するセンサ（図示せず）が設けられており、
このセンサの検出結果に応じ、加工部５により必要に応
じてインク滴の厚みの調整を行う。更に、インク滴の厚
みを高くする場合、高さを微調整する場合等、必要に応
じて補助インクジェットヘッド１０で再吐出し、補助露
光機７で硬化定着を行う。可変情報が印刷された印刷物
はスタッカ９に排出される。なお、露光機４は紫外線、
電子線、その他の放射線等が使用される。In FIG. 2, reference numeral 1 denotes an ink jet recording apparatus. The recording medium 8 on which the fixed information is recorded is conveyed from the paper feeding section 2 by the conveyor belt 6. Variable information is recorded by the inkjet head 3, and the exposure device 4 performs curing / fixing simultaneously with or immediately after recording. A sensor (not shown) that detects the thickness of the variable information ink is provided near the inkjet head 3 or the exposure device 4,
Depending on the detection result of this sensor, the thickness of the ink droplet is adjusted by the processing unit 5 as necessary. Further, when the thickness of the ink droplet is increased, the height is finely adjusted, and the like, the auxiliary inkjet head 10 re-ejects the ink as needed, and the auxiliary exposure device 7 performs curing and fixing. The printed matter on which the variable information is printed is discharged to the stacker 9. The exposure device 4 uses ultraviolet rays,
Electron beams and other radiation are used.
【００１４】以上の構成により、固定情報の厚みが大き
い場合には、これに合わせて可変情報の厚みも大きくす
ることができる、すなわち、図２に示すように、インク
ジェットヘッド３および露光機４で印刷した可変情報の
厚みが目的とする厚みに達していない場合、補助インク
ジェットヘッド１０によりインクを吐出させ、補助露光
機７で硬化させて、インク滴を重ねて厚くすることがで
きる。この操作を必要に応じて複数回繰り返し、インク
滴を厚くして任意の厚みにすることができる。With the above configuration, when the thickness of the fixed information is large, the thickness of the variable information can be correspondingly increased, that is, as shown in FIG. When the thickness of the printed variable information does not reach the target thickness, the ink can be ejected by the auxiliary inkjet head 10 and cured by the auxiliary exposure device 7, and the ink droplets can be overlapped and thickened. This operation can be repeated a plurality of times as necessary to thicken the ink droplets to an arbitrary thickness.
【００１５】なお、図２に示す露光機４、補助露光機７
としては、紫外線（ＵＶ）照射ランプ、電子線等が挙げ
られる。ＵＶ照射ランプにおいては、熱が発生し、被記
録体が変形してしまう可能性があるため、冷却機構、例
えば、コールドミラー、コールドフィルター、ワーク冷
却等が具備されていると望ましい。オゾンを除去する機
構が具備されるとさらに好ましい。ランプの種類として
は、高圧水銀灯、超高圧水銀灯、メタルハライド等があ
るが、オゾンレスのランプが良い。超高圧水銀灯は点光
源であるが、光学系と組み合わせて光利用効率を高くし
たDeepUVタイプは、短波長領域の照射が可能である。メ
タルハライドは、波長領域が広いため着色物に有効的で
ある。Pb、Sn、Feなどの金属のハロゲン化物が用いら
れ、光開始剤の吸収スペクトルに合わせて選択できる。
硬化に有効であるランプであれば特に制限無く使用でき
るが、特にＵＶＡ光線発生装置が有効である。紫外線等
の照射においては、紫外線ランプの発する熱によって、
被印刷基材が熱的な変形を起こす可能性があるので、紫
外線のみが照射されて熱線が照射されないような照射装
置を用いることが必要である。硬化を効率よくするため
にポリビニルアルコール等の酸素遮断膜を形成し、その
上から照射させることも有効である。The exposure device 4 and the auxiliary exposure device 7 shown in FIG.
Examples thereof include an ultraviolet (UV) irradiation lamp and an electron beam. Since the UV irradiation lamp may generate heat and deform the recording medium, it is desirable that the UV irradiation lamp is provided with a cooling mechanism such as a cold mirror, a cold filter, and work cooling. More preferably, a mechanism for removing ozone is provided. There are high-pressure mercury lamps, ultra-high-pressure mercury lamps, metal halides, and the like as types of lamps, but ozoneless lamps are preferable. The ultra-high pressure mercury lamp is a point light source, but the DeepUV type, which has a high light utilization efficiency in combination with an optical system, can irradiate in the short wavelength region. The metal halide has a wide wavelength range and is effective for coloring. Halides of metals such as Pb, Sn, and Fe are used, and can be selected according to the absorption spectrum of the photoinitiator.
A lamp that is effective for curing can be used without particular limitation, but a UVA ray generator is particularly effective. When irradiating with ultraviolet rays, etc., due to the heat generated by the ultraviolet lamp,
Since the base material to be printed may be thermally deformed, it is necessary to use an irradiation device that is irradiated with only the ultraviolet rays and not the heat rays. It is also effective to form an oxygen barrier film of polyvinyl alcohol or the like and to irradiate it from above in order to make the curing efficient.
【００１６】また、本発明の可変情報用インクが付着し
た被記録体は、紫外線、電子線等によって硬化させる
が、複数色のインクを用いて印刷を行う場合には、複数
の色のインクを付着させた後に被記録体に紫外線、電子
線等を照射しても、あるいは１色毎に紫外線、電子線等
を照射させる工程を色毎に繰り返しても良い。特にカー
ボーンブラックを添加したインクは硬化が阻害されるた
め、他のインクよりも照射効率を良くするか、または照
射エネルギーを大きくする工夫が必要である。また、固
定情報の印刷が発泡印刷や浮き出し印刷のように厚い場
合はこれに合わせて可変情報の印刷を厚くする場合は紫
外線、電子線等が表面だけでなく内部まで照射する必要
がある。The recording medium to which the variable information ink of the present invention is adhered is cured by ultraviolet rays, electron beams or the like. When printing is performed using a plurality of color inks, a plurality of color inks are used. After the recording material is adhered, the recording medium may be irradiated with ultraviolet rays, electron beams or the like, or the step of irradiating ultraviolet rays, electron beams or the like for each color may be repeated for each color. In particular, ink containing carbon black inhibits curing, so that it is necessary to improve irradiation efficiency or increase irradiation energy as compared with other inks. Further, when the fixed information is printed thickly like foam printing or embossed printing, when the variable information printing is thickened accordingly, it is necessary to irradiate not only the surface but also the inside with ultraviolet rays or electron beams.
【００１７】次に、可変情報の厚みを調整するための他
の例について、図３を用いて説明する。Next, another example for adjusting the thickness of the variable information will be described with reference to FIG.
【００１８】図３は、図２に示す加工部５に装着される
研磨装置の一例を示す。ラッピングテープ２０は、供給
ロール２１から研磨ロール２２へと送られ、更に巻き取
りロール２３へと送られる。研磨ロール２２のの軸の両
側には圧力調整装置２４が設けられており、ラッピング
テープ２０の被記録体８への押し付けを調整している。
被記録体８は平滑な載置台１９に吸引吸着されており、
所定の速度でラッピングテープの走行方向とは逆方向
（矢印Ａ方向）へ移動することにより、ラッピングテー
プ２０によって研磨が行われる。なお、研磨の荷重は
０．３〜１ＭＰａが好ましい。過剰な研磨は画質を低下
させる。また、ラッピングテープ２０は研磨粒子を含有
する部分としない部分を交互に配置したり、被記録体８
の搬送方向に並行配置した別ローラに研磨屑を移行させ
たり、研磨屑を取り去る機能を備えると更なる画質の向
上が図られる。FIG. 3 shows an example of a polishing apparatus mounted on the processing section 5 shown in FIG. The wrapping tape 20 is sent from the supply roll 21 to the polishing roll 22 and then to the winding roll 23. Pressure adjusting devices 24 are provided on both sides of the axis of the polishing roll 22 to adjust the pressing of the wrapping tape 20 against the recording medium 8.
The recording medium 8 is sucked and adsorbed on a smooth mounting table 19,
Polishing is performed by the wrapping tape 20 by moving at a predetermined speed in the direction opposite to the running direction of the wrapping tape (direction of arrow A). The polishing load is preferably 0.3 to 1 MPa. Excessive polishing reduces image quality. Further, the wrapping tape 20 has a portion containing abrasive particles and a portion not containing abrasive particles alternately arranged, or the recording medium 8
Further improvement in image quality can be achieved by providing a function of transferring polishing debris or removing polishing debris to another roller arranged in parallel in the conveyance direction of.
【００１９】上述した研磨方法しては、従来の方法が特
に限定すること無しに使用できる。例えば、インクの凸
部をバフ研磨等によって研磨粒子を使用して厚みを低く
する湿式による研削方法や、硬化したインク滴上を走行
するアルミナ等の微細な研磨粒子が付着したラッピング
テープや研磨粒子を樹脂中に分散した研磨フィルム等に
よって乾式研磨することによってインクの厚さを調整す
る方法がある。この他にもガスやレーザで研磨したり、
エッチングする方法がある。As the polishing method described above, conventional methods can be used without any particular limitation. For example, a wet grinding method in which abrasive particles are used to reduce the thickness by using abrasive particles by buffing or the like, or a lapping tape or abrasive particles to which fine abrasive particles such as alumina running on a cured ink droplet are attached. There is a method of adjusting the thickness of the ink by dry polishing with a polishing film or the like dispersed in a resin. In addition to this, polishing with gas or laser,
There is a method of etching.
【００２０】可変情報の厚みを調整するための更に他の
例について、図４を用いて説明する。Still another example for adjusting the thickness of variable information will be described with reference to FIG.
【００２１】図４は、図２に示す加工部５に装着される
加圧装置の一例を示す。加圧ローラ３２の軸の両側には
圧力調整装置３１が設けられており、加圧ローラの被記
録体８への押し付けを調整している。加圧ローラ３２
は、金属ローラ、樹脂ローラ、または金属ローラ表面を
ＰＦＡやポリエチレン、ポリウレタン、ナイロン等のチ
ューブで被覆したローラのいずれを用いてもよい。被記
録体８は平滑な載置台１９に吸引吸着されており、所定
の速度で搬送される過程で加圧ローラによる加圧が行わ
れる。なお、インクに加えられる圧力は、インクの硬度
に密接に関係するため、可変情報を硬化する工程を加圧
の前後に分けても行っても、加圧の前に行っても良い。FIG. 4 shows an example of a pressure device mounted on the processing section 5 shown in FIG. Pressure adjusting devices 31 are provided on both sides of the shaft of the pressure roller 32, and adjust the pressing of the pressure roller against the recording medium 8. Pressure roller 32
May be a metal roller, a resin roller, or a roller whose surface is covered with a tube of PFA, polyethylene, polyurethane, nylon or the like. The recording medium 8 is sucked and adsorbed on a smooth mounting table 19, and is pressed by a pressure roller while being conveyed at a predetermined speed. Since the pressure applied to the ink is closely related to the hardness of the ink, the step of curing the variable information may be performed before or after the pressurization or before the pressurization.
【００２２】上述の例では加圧ローラとしたが、加圧装
置としては平板によるプレスでもよい。加圧力は可変情
報の厚みが１５μｍ以下になるように調整ができればよ
いが、好ましくは２０MPa以下、さらに好ましくは１０M
Pa以下がよい。過剰な加圧は画質を低下させる。また、
可変情報と加圧装置との接触面に、シリコーンオイル等
を塗布し、加圧処理の信頼性を向上させることも有効で
ある。Although the pressure roller is used in the above example, a flat plate press may be used as the pressure device. The applied pressure may be adjusted so that the thickness of the variable information is 15 μm or less, preferably 20 MPa or less, more preferably 10 M
Pa or less is good. Excessive pressurization deteriorates the image quality. Also,
It is also effective to apply silicone oil or the like to the contact surface between the variable information and the pressure device to improve the reliability of the pressure treatment.
【００２３】可変情報の厚みを調整するための更に他の
例について、図５を用いて説明する。Still another example for adjusting the thickness of the variable information will be described with reference to FIG.
【００２４】図５は、図２の構成に付加される加熱装置
の一例を示す。被記録体８を搬送する搬送ベルト６をヒ
ータ４０で加熱し、被記録体８を間接的に加熱する。可
変情報を印刷するインクジェットヘッド３及び露光機４
に対向して設置されたヒータ４０により、印刷中および
印刷後も加熱が行われる。これによって、可変情報の厚
みを調整する。なお、硬化後の加熱はあまり有効でな
い。このように、被記録体を直接または間接的に加熱す
ることにより、被記録体に着弾したインクの粘度を直ち
に低下させて被記録体の縦(浸透)方向、横（拡散）方向
に流動しやすくするとよい。熱風を伴うとインクの噴射
が不安定になる可能性があるので、加熱装置が被記録体
を支持する搬送基板であるプラテン部材の一部として設
けられるのが好ましい。加熱装置はセラミックヒータや
ハロゲンランプヒータであってもよい。FIG. 5 shows an example of a heating device added to the configuration of FIG. The conveyor belt 6 that conveys the recording medium 8 is heated by the heater 40 to indirectly heat the recording medium 8. Inkjet head 3 and exposure device 4 for printing variable information
The heater 40, which is installed so as to face with, heats during and after printing. With this, the thickness of the variable information is adjusted. Note that heating after curing is not very effective. In this way, by directly or indirectly heating the recording medium, the viscosity of the ink that has landed on the recording medium is immediately reduced and the ink flows in the longitudinal (permeation) direction and lateral (diffusion) direction of the recording medium. It should be easy. Since the jetting of ink may become unstable when accompanied by hot air, it is preferable that the heating device is provided as a part of the platen member that is a transport substrate that supports the recording medium. The heating device may be a ceramic heater or a halogen lamp heater.
【００２５】加熱装置によりインク滴の厚みが固定情報
のインクの厚さの±１５μｍになるように調整すること
が可能となるが、加熱温度は好ましくは使用する樹脂の
ガラス転移温度（Ｔｇ）１００℃以下、さらに好ましく
は８０°以下とするとよい。加熱処理は、可変情報を硬
化する工程を加熱の前後に分けて行っても、加熱の後行
っても良い。Although it is possible to adjust the thickness of the ink droplet to be ± 15 μm of the thickness of the fixed information ink by the heating device, the heating temperature is preferably 100 ° C. of the glass transition temperature (Tg) of the resin used. It is good to set it to be not more than 0 ° C, and more preferably not more than 80 °. The heat treatment may be performed after the step of curing the variable information is divided into before and after heating, or after the heating.
【００２６】本発明でとくに望ましく使用できる、紫外
線や電子線等を照射することによりを照射することによ
り硬化する可変情報を印刷するインクはインクジェット
ヘッドより安定した吐出ができれば特に限定はないが、
望ましくは粘度が２５℃で７〜４０mPa・s、表面張力は
２０〜４０mN/mである。The ink for printing variable information, which is cured by irradiation with ultraviolet rays or electron beams, which can be particularly preferably used in the present invention, is not particularly limited as long as it can be ejected more stably than an ink jet head.
Desirably, the viscosity is 7 to 40 mPa · s at 25 ° C. and the surface tension is 20 to 40 mN / m.
【００２７】可変情報に用いられるインクは、分子構造
中にラジカル重合可能な不飽和二重結合を有する比較的
低粘度の樹脂モノマー、紫外線硬化樹脂の製造に使用さ
れる光重合性プレポリマーおよび光開始剤等から構成さ
れる。これらはインクジェット用インクの主成分として
十分な印刷物保管安定性が得られる。インクの流動性が
安定している他に、印刷画像を擦ったり折り曲げたりす
ることに耐えうる強度を持っている。The ink used for variable information is a resin monomer having a relatively low viscosity having an unsaturated double bond capable of radical polymerization in its molecular structure, a photopolymerizable prepolymer used for producing an ultraviolet curable resin, and a photopolymerizable prepolymer. It is composed of an initiator. These are the main components of inkjet inks and can provide sufficient storage stability for printed matter. In addition to having stable ink fluidity, it has the strength to withstand rubbing and bending of printed images.
【００２８】これらはいずれも記録媒体へのぬれ性が良
好で広範囲の各種被着体物質に対し密着性に優れる。さ
らに、低粘度化および高速化のために水および溶剤を添
加しても良い。可変情報用インクの構成成分をいずれも
良く溶解させ、印刷後は速やかに蒸発するものであれば
いずれの溶剤でも良い。All of these have good wettability to the recording medium and have excellent adhesion to a wide variety of adherend substances. Further, water and a solvent may be added to reduce the viscosity and increase the speed. Any solvent may be used as long as it can dissolve all the constituent components of the variable information ink and can be quickly evaporated after printing.
【００２９】また、本発明のインクを着色する場合に
は、染料、顔料等の着色剤を混合する。無機顔料や粉体
金属等主成分に分散が可能であるものはすべてインクと
して扱われる。添加量は１〜２０重量部が適量である。When coloring the ink of the present invention, a coloring agent such as a dye or a pigment is mixed. Anything that can be dispersed in the main component such as an inorganic pigment or powder metal is treated as an ink. An appropriate amount is 1 to 20 parts by weight.
【００３０】本発明のインクに更に機能性を発現するた
め、各種の増感剤、光安定化剤、表面処理剤、界面活性
剤、粘度低下剤、酸化防止剤、老化防止剤、架橋促進
剤、重合禁止剤、可塑剤、防腐剤、分散剤等を混合する
ことができる。特に可変情報の記録の厚さを１５μｍよ
りも厚くする必要がある場合は硬化を促進させる増感剤
の添加が有効である。In order to further exhibit functionality in the ink of the present invention, various sensitizers, light stabilizers, surface treatment agents, surfactants, viscosity reducing agents, antioxidants, antioxidants, crosslinking accelerators. , A polymerization inhibitor, a plasticizer, a preservative, a dispersant and the like can be mixed. In particular, when it is necessary to increase the recording thickness of variable information to more than 15 μm, it is effective to add a sensitizer that accelerates curing.
【００３１】発明の目的とする分野のプリンタの印刷速
度は、従来のインクジェット記録より高速である場合に
特に有効である。速度に関して明瞭な限定はないが、ノ
ズル及び用紙の間の相対速度が１０ｉｐｓ（ｉｎｃｈ／
ｓ）以上となる記録速度が特に好ましい。いずれにおい
ても、ノズル及び用紙（記録媒体）との相対的な移動速
度が１０ｉｐｓ以上となる工程であり、例えばライン型
記録の如く、ヘッド部分が固定され用紙のみ移動する場
合は紙移動速度（紙送り速度）が上記相対速度に該当す
る。例えば、ライン型記録の紙送り速度Ｖは、インク滴
の吐出周波数ｆ、記録解像度Ｒにより、Ｖ ＝ｆ×Ｒで
示される。従来の５ｉｐｓ以下（通常は１ｉｐｓ以下）
の記録においては従来報告されている多数のインクがそ
のまま適用出来る。本発明は少なくとも５ｉｐｓ以上、
特に好ましくは１０ｉｐｓ以上の高速度記録において、
効果的に利用出来る。The printing speed of the printer in the target field of the invention is particularly effective when the printing speed is higher than that of the conventional ink jet recording. There is no clear limitation on the speed, but the relative speed between the nozzle and the paper is 10 ips (inch / inch /
A recording speed of s) or higher is particularly preferable. In any of these processes, the relative movement speed between the nozzle and the paper (recording medium) is 10 ips or more. For example, in line-type recording, when the head portion is fixed and only the paper moves, the paper movement speed (paper The feed speed) corresponds to the relative speed. For example, the paper feed speed V for line-type recording is represented by V 2 = f × R by the ink droplet ejection frequency f and the recording resolution R. Conventional 5 ips or less (usually 1 ips or less)
In the recording of, a large number of conventionally reported inks can be applied as they are. The present invention is at least 5 ips,
Particularly preferably at high speed recording of 10 ips or more,
It can be used effectively.
【００３２】インク吸収性が低い被記録体においては、
インクドットの拡散や異色インク間の混色を防ぐために
インク滴の着弾と同時に硬化させる必要があり、インク
が固定情報の記録より厚くなりやすい。これは特に固定
情報がオフセット印刷やスクリーン印刷、レーザプリン
タなどインクジェット記録と定着手段が異なる方式ま
た、インクジェット記録においても水性や油性、溶剤系
など、本発明で使用するインク種と異なるインクジェッ
トプリンタで記録が行なわれた場合に顕著である。従っ
て、本発明で使用する被記録体は金属、プラスチック
等、紙に限定されず、これら被記録体にインク受容層を
設けた場合は特に好ましい。特に、紙に対する液体の浸
透は繊維の空隙への毛細管浸透と繊維自身の膨潤が併行
する複雑な現象であるが、円筒形毛細管モデルにもとづ
く下記Lucas−Washburnの式が解析に広く使用されてい
る。液体の浸透深さＨは、液体の表面張力γ、粘度η、
細管の半径ｒ、浸透時間ｔ及び液体と毛細管の接触角θ
を用いて下式で示される。In a recording medium having low ink absorbency,
In order to prevent diffusion of ink dots and color mixing between different color inks, it is necessary to cure the ink droplets at the same time as landing, and the ink tends to be thicker than the recording of fixed information. This is because fixed information is recorded by an inkjet printer such as offset printing, screen printing, laser printer, etc., which has a different fixing means from inkjet recording, and also in inkjet recording, which is different from the ink type used in the present invention, such as water-based, oil-based, solvent-based, etc. Is noticeable when is done. Therefore, the recording medium used in the present invention is not limited to paper such as metal and plastic, and it is particularly preferable to provide an ink receiving layer on these recording medium. In particular, liquid permeation into paper is a complex phenomenon in which capillary permeation into the voids of fibers and swelling of the fibers themselves occur concurrently, but the following Lucas-Washburn equation based on the cylindrical capillary model is widely used for analysis. . The penetration depth H of the liquid is the surface tension γ of the liquid, the viscosity η,
Capillary radius r, penetration time t, and liquid-capillary contact angle θ
Is expressed by the following formula.
【００３３】[0033]
【数１】 [Equation 1]
【００３４】図６に示すように、上式は縦軸Ｈ、横軸ｔ
０.５でプロットすると、原点を通過する直線となる
が、実際の系ではある程度の浸透時間ｔ０で折れ曲がる
挙動を示すことが多い。この切片（図中のＫｒ）を粗さ
指数、傾き（図中のＫａ）を吸収係数、ｔ０を濡れ時間
と称することがある。この切片の命名は、インクが初期
段階では用紙の表面凹凸に湿潤するのみで基体に浸透を
開始するには一定時間（ｔ０）を要するとの解釈に基づ
いている。本発明の吸収係数は、図６のグラフと同様の
プロットにおいて、浸透深さ（インク吸収量）（縦軸）
をｍｌ／ｍ２単位、浸透時間（横軸）を(ｍｓ)０.５単
位とした場合の傾き（Ｋａ）と定義される。As shown in FIG. 6, the above equation has a vertical axis H and a horizontal axis t.
When plotted at 0.5 , it is a straight line that passes through the origin, but in an actual system, it often exhibits a behavior of bending at a certain permeation time t 0 . This intercept (Kr in the drawing) may be called a roughness index, the slope (Ka in the drawing) may be called an absorption coefficient, and t 0 may be called a wetting time. The nomenclature of this section is based on the interpretation that the ink initially wets the surface irregularities of the paper and requires a certain time (t 0 ) to start penetrating the substrate. In the plot similar to the graph of FIG. 6, the absorption coefficient of the present invention is the penetration depth (ink absorption amount) (vertical axis).
Is defined as a unit of ml / m 2 and the permeation time (horizontal axis) is defined as (ms) 0.5 unit, which is defined as a slope (Ka).
【００３５】上述した図６のグラフを元にして、本発明
で使用可能な被記録体について検討した結果を図７に示
す。図７において、普通紙、インクジェット専用紙、コ
ートボール紙のように、吸収係数の閾値となる０．７
(ｍｌ／ｍ２)／(ｍｓ)０．５より大きい吸収係数を有す
る被記録体は、被記録体自身のインク吸収力により可変
情報の高さを制御することが可能である。可変情報の厚
みを制御するために必要な被記録体の吸収係数は、特に
好ましくは１．５(ｍｌ／ｍ２)／(ｍｓ)０．５以上であ
る。１０．０(ｍｌ／ｍ２)／(ｍｓ)０．５以上の被記録
体は不要な裏抜け（裏面にまでインクが達する）現象を
生じ高品質の記録は得難い。FIG. 7 shows the results of a study of the recording medium that can be used in the present invention, based on the graph of FIG. 6 described above. In FIG. 7, the threshold value of the absorption coefficient is 0.7, such as plain paper, ink jet paper, and coated cardboard.
A recording medium having an absorption coefficient larger than (ml / m 2 ) / (ms) 0.5 can control the height of variable information by the ink absorbing power of the recording medium itself. The absorption coefficient of the recording medium necessary for controlling the thickness of the variable information is particularly preferably 1.5 (ml / m 2 ) / (ms) 0.5 or more. A recording medium having a recording rate of 10.0 (ml / m 2 ) / (ms) 0.5 or more causes an unwanted phenomenon of strike-through (ink reaches the back surface), and it is difficult to obtain high-quality recording.
【００３６】一方、ワイドフォーマット用紙、アート紙
など、吸収係数の閾値となる０．７(ｍｌ／ｍ２)／(ｍ
ｓ)０．５以下の吸収係数を有する被記録体である場合
には、前述した他の加工部による処理を行なわないと可
変情報の厚みを１５μｍ以下とし、かつ混色等がない高
品質の印刷を得るのは難しくなる。しかし、発泡印刷や
浮き出し印刷のように固定情報の印刷の厚さが１００μ
ｍ以上あるような場合は可変情報の印刷の厚みはこれよ
り±１５μｍの範囲にするため、吸収係数はこの限りで
はない。On the other hand, for wide format paper, art paper, etc., the threshold value of the absorption coefficient is 0.7 (ml / m 2 ) / (m
s) In the case of a recording medium having an absorption coefficient of 0.5 or less, the thickness of the variable information is 15 μm or less and the high quality printing without the color mixture and the like unless the processing by the other processing section described above is performed. Is hard to get. However, the thickness of fixed information is 100μ, such as foam printing and embossed printing.
In the case of m or more, the printing thickness of the variable information is within the range of ± 15 μm, so the absorption coefficient is not limited to this.
【００３７】高画質を得るためにはノズル先端からイン
ク滴の着弾位置まではおよそ１ｍｍ程度が望ましいため
固定情報の印刷の厚さはこれ以下がよい。浸透速度の測
定にはブリストー法、これを自動化した動的走査吸液測
定法等がある。In order to obtain a high image quality, it is desirable that the distance from the tip of the nozzle to the landing position of the ink droplet be about 1 mm, so the thickness of printing the fixed information should be less than this. The permeation rate can be measured by the Bristow method, a dynamic scanning liquid absorption measuring method that is an automated method, or the like.
【００３８】次に本発明を実施例により具体的に説明す
るが、記載例に限定されるものではない。
〔実施例１〕ビヒクルとしてウレタンアクリレート（三
菱レイヨン製、商品名：ダイヤビームＵＫ６０３８）を
１０重量部、ネオペンチルグリコールヒドロキシピバリ
ン酸エステルジ(メタ)アクリレート(MANDA)（日本化薬
製、商品名KAYARAD MANDA）を９０重量部および光重合
開始剤（チバスペシャリティケミカルズ製、商品名イル
ガキュア１７００）を３重量部、着色剤として黒顔料
（三菱化学製、商品名：ＭＡ７７）４重量部の全３００
gをホモジナイザ（日立工機製ＨＧ３０）を用いて、回
転数2,000rpmで均質な混合物が得られるまで分散し、続
いてろ過を行い不純物等を除去し、可変情報用インクを
得た。結果を図８に示す。Next, the present invention will be specifically described with reference to examples, but the present invention is not limited to the examples. [Example 1] 10 parts by weight of urethane acrylate (manufactured by Mitsubishi Rayon, trade name: Diabeam UK6038) as a vehicle, neopentyl glycol hydroxypivalate di (meth) acrylate (MANDA) (manufactured by Nippon Kayaku, trade name KAYARAD MANDA) ), 3 parts by weight of a photopolymerization initiator (manufactured by Ciba Specialty Chemicals, trade name Irgacure 1700), and 4 parts by weight of a black pigment (manufactured by Mitsubishi Chemical, trade name: MA77) as a colorant, for a total of 300 parts by weight.
g was dispersed using a homogenizer (HG30 manufactured by Hitachi Koki Co., Ltd.) at a rotation speed of 2,000 rpm until a homogeneous mixture was obtained, followed by filtration to remove impurities and the like to obtain a variable information ink. The results are shown in Fig. 8.
【００３９】インクの粘度は回転粘度計（トキメック製
ＥＤＬモデル）、表面張力は自動表面張力計（協和界面
科学社製CVBP-Zモデル）にて測定した。いずれも測定温
度は２５℃である。粘度は９．５ｍPa・s、表面張力は３
２．５ｍN/mであった。The viscosity of the ink was measured with a rotary viscometer (EDL model manufactured by Tokimec), and the surface tension was measured with an automatic surface tension meter (CVBP-Z model manufactured by Kyowa Interface Science Co., Ltd.). In both cases, the measurement temperature is 25 ° C. Viscosity is 9.5 mPa · s, surface tension is 3
It was 2.5 mN / m.
【００４０】用紙を一定の速さで移動させながら、ダイ
レクト刷版作成機（日立工機製ＳＪ０２Ａ）を使用し、
まず紙表面にインク吐出速度３ｋＨｚ、用紙送り速度を
１０ｉｐｓとして、解像度３００（×６００）ｄｐｉ
で、水性インクを使用したインクジェットプリンタで厚
み１μｍの固定情報が印刷されているコートボール紙
（インク吸液係数１．０(ｍｌ／ｍ２)／(ｍｓ)０．５）
に可変情報を印刷した。次いで直ちに紫外線照射装置
（ウシオ電機製、ＵＶＣ−１２１２／１ＭＮＬＣ３−Ａ
Ａ０４）で３００ｍＪ／ｃｍ2の光量を照射して硬化さ
せた。インクの厚みはミツトヨ製デジマティックマイク
ロメータで測定したところ５μｍであった。また、イン
クのにじみおよび積み重ね保管時のインクの転写を調べ
た。硬化後４０℃の高温下において印刷物上にコートボ
ール紙を重ね、その上に４ｋｇの重りをのせたまま６時
間放置した後、重ねたコートボール紙面におけるインク
の転写およびにじみを調べ、転写の度合いを３段階で目
視評価した。転写、にじみが全く無かった記録物は◎、
実用レベルの記録物は○、実用不可の記録物は×によっ
て評価した。記録部の盛り上がりは５０００枚記録後、
目視評価した。実用レベルであるものは○、ないものは
×で評価した。実施例１の記録物はいずれの評価も実用
化レベルに有ることがわかった。
〔実施例２〕ビヒクルとしてウレタンアクリレート（大
成化工製、商品名：アクリットＷＢＲ−８２９）を１０
０重量部、および着色剤としてシアン顔料水分散体（チ
バスペシャルティケミカルズ製KIJ200-23-2）を３０重
量部として実施例１と同様の方法で均質な可変情報用イ
ンクを得た。結果を図８に示す。粘度は３０．５ｍPa・
s、表面張力は３１ｍN/mであった。インクを４０℃に加
温し、粘度を１５ｍPa・ｓとして実施例１と同様の条件
で厚み１０μｍのスクリーン印刷で固定情報が印刷され
ているＰＶＣフィルム（インクの吸液係数０．２(ｍｌ
／ｍ２)／(ｍｓ)０ ．５））に実施例１で使用した黒イ
ンクとあわせて２色印刷を行った。次いで直ちに実施例
１と同じ紫外線照射装置で（２００ｍＪ／ｃｍ2）の光
量を照射した。インクの厚みは黒とシアンインクが重な
った濃い青色部が３６μｍであったため、表面を１．０
μｍのアルミナ粒子を含むテープを設置した研磨装置に
より荷重５．０ｋｇ／ｃｍ2で研磨した。ラッピングを
施すことによってインクの厚さは２０μｍとなった。実
施例２の記録物はにじみがなく保管時の評価がいずれも
実用化レベルに有ることがわかった。
〔実施例３〕着色剤としてマゼンタ顔料分散体（オリエ
ント化学製、商品名： MICROPIGMOMRD−2）を使用した
以外は実施例２と同様の方法で均質な可変情報用インク
を得た。結果を図８に示す。粘度は７ｍPa・s、表面張力
は２７ｍN/mであった。実施例１と同様の条件で厚み２
μｍのオフセット印刷で固定情報が印刷されているＰＶ
Ｃフィルム（インク吸液係数０．４(ｍｌ／ｍ２)／(ｍ
ｓ)０．５））に印刷した。次いで直ちに実施例１と同
じ紫外線照射装置で１５０ｍＪ／ｃｍ2の光量を照射し
た。インクの厚みは２２μｍであったため、加圧装置に
より加圧した。金属ローラ表面をＰＦＡチューブで被覆
し、シリコーンオイルを塗布したローラを用い10ＭPaで
加圧したところ、インクの厚さは１０μｍとなった。実
施例４の記録物はにじみがなく保管時の評価がいずれも
実用化レベルに有ることがわかった。
〔実施例４〕着色剤としてイエロ顔料水分散体（オリエ
ント化学製、商品名：MICROPIGMO WMYW−5）を使用した
以外は実施例２と同様の方法で均質な可変情報用インク
を得た。結果を図８に示す。粘度は１７ｍPa・s、表面張
力は３５ｍN/mであった。実施例１と同様の条件でオフ
セット印刷で固定情報を印刷（厚み１μｍ）してあるＰ
ＶＣフィルム（該インクでの吸液係数０．３(ｍｌ／ｍ
２)／(ｍｓ)０．５））に印刷した。次いで直ちに実施
例１と同じ紫外線照射装置で８０ｍＪ／ｃｍ2の光量を
照射した。インクの厚みは１８μｍであったため、図６
の加温装置で記録媒体を５０℃に加温したところインク
の厚さは１２μｍとなった。実施例４の記録物は保管時
の評価がいずれも実用化レベルに有ることがわかった。
〔実施例５〕実施例１と同様のインクおよび同様の条件
で、発泡印刷で固定情報を印刷（厚み６０μｍ）してあ
るＰＶＣフィルム（インク吸液係数０．３(ｍｌ／ｍ２)
／(ｍｓ)０．５））に印刷した。次いで直ちに実施例１
と同じ紫外線照射装置で８０ｍＪ／ｃｍ2の光量を照射
した。インクの厚みは２５μｍであったため、固定情報
の方が３５μｍ厚かった。そこで補助ヘッドで同様のイ
ンクをその上に噴射して後、再び紫外線照射装置で８０
ｍＪ／ｃｍ2の光量を照射したところインクの厚さは４
５μｍとなった。実施例５の印刷物は保管時の評価がい
ずれも実用化レベルに有ることがわかった。Using a direct plate making machine (Hitachi Koki SJ02A) while moving the paper at a constant speed,
First, the ink ejection speed on the paper surface is 3 kHz and the paper feed speed is 10 ips, and the resolution is 300 (× 600) dpi.
The coated cardboard on which fixed information with a thickness of 1 μm is printed by an inkjet printer using water-based ink (ink absorption coefficient 1.0 (ml / m 2 ) / (ms) 0.5 )
Variable information is printed on. Then immediately UV irradiation device (Ushio Denki, UVC-1212 / 1MNLC3-A
In A04), a light amount of 300 mJ / cm 2 was irradiated to cure. The thickness of the ink was 5 μm as measured with a Digimatic Micrometer manufactured by Mitutoyo. In addition, ink bleeding and ink transfer during stack storage were examined. After curing, a coated cardboard was placed on the printed matter at a high temperature of 40 ° C., and a weight of 4 kg was placed on it for 6 hours. Then, the ink transfer and bleeding on the coated cardboard surface was examined, and the degree of transfer was determined. Was visually evaluated in three levels. The recorded material with no transfer or bleeding is ◎,
Practical level recorded matter was evaluated as ◯, and impractical recorded matter was evaluated as x. The excitement of the recording section is 5000 sheets after recording,
It was visually evaluated. Practical level was evaluated as ◯, and no evaluation was evaluated as x. It was found that the evaluation of the printed matter of Example 1 was at a practical level in all evaluations. [Example 2] 10 urethane acrylate (manufactured by Taisei Kako, trade name: ACRYT WBR-829) was used as a vehicle.
A uniform variable information ink was obtained in the same manner as in Example 1 with 0 part by weight and a cyan pigment aqueous dispersion (KIJ200-23-2 manufactured by Ciba Specialty Chemicals) as 30 parts by weight as a colorant. The results are shown in Fig. 8. Viscosity is 30.5 mPa
s, surface tension was 31 mN / m. The ink is heated to 40 ° C., the viscosity is 15 mPa · s, and the PVC film on which fixed information is printed by screen printing with a thickness of 10 μm under the same conditions as in Example 1 (ink absorption coefficient 0.2 (ml
/ M 2 ) / (ms) 0 . 5 )), and two-color printing was performed together with the black ink used in Example 1. Immediately thereafter, the same amount of light as (200 mJ / cm 2 ) was irradiated with the same ultraviolet irradiation device as in Example 1. The thickness of the ink was 36 μm in the dark blue part where black and cyan ink overlapped, so the surface was 1.0
Polishing was performed with a load of 5.0 kg / cm 2 by using a polishing apparatus equipped with a tape containing alumina particles of μm. By lapping, the thickness of the ink became 20 μm. It was found that the printed matter of Example 2 had no bleeding and that the evaluation during storage was at a practical level. [Example 3] A homogeneous variable information ink was obtained in the same manner as in Example 2 except that a magenta pigment dispersion (Orient Chemical, trade name: MICROPIGMOMRD-2) was used as a colorant. The results are shown in Fig. 8. The viscosity was 7 mPa · s and the surface tension was 27 mN / m. Thickness 2 under the same conditions as in Example 1
PV with fixed information printed by offset printing of μm
C film (ink absorption coefficient 0.4 (ml / m 2 ) / (m
s) 0.5 )). Immediately thereafter, the same ultraviolet irradiation device as in Example 1 was irradiated with a light amount of 150 mJ / cm 2 . Since the thickness of the ink was 22 μm, the pressure was applied by the pressure device. When the surface of the metal roller was covered with a PFA tube and pressure was applied at 10 MPa using a roller coated with silicone oil, the ink thickness was 10 μm. It was found that the recorded matter of Example 4 had no bleeding and that the evaluation during storage was at a practical level. [Example 4] A uniform variable information ink was obtained in the same manner as in Example 2 except that a yellow pigment water dispersion (manufactured by Orient Chemical Co., Ltd., trade name: MICROPIGMO WMYW-5) was used as a colorant. The results are shown in Fig. 8. The viscosity was 17 mPa · s and the surface tension was 35 mN / m. P is printed with fixed information (thickness 1 μm) by offset printing under the same conditions as in Example 1.
VC film (Liquid absorption coefficient of the ink 0.3 (ml / m
2 ) / (ms) 0.5 )). Immediately thereafter, the same ultraviolet irradiation device as in Example 1 was irradiated with a light amount of 80 mJ / cm 2 . Since the thickness of the ink was 18 μm, FIG.
When the recording medium was heated to 50 ° C. with the above heating device, the ink thickness became 12 μm. It was found that all of the recorded products of Example 4 were evaluated for practical use at the time of storage. [Embodiment 5] A PVC film (ink absorption coefficient 0.3 (ml / m 2 )) on which fixed information is printed (thickness 60 μm) by foaming printing under the same ink and conditions as in Embodiment 1.
/ (Ms) 0.5 )). Immediately thereafter Example 1
The same UV irradiation device was used to irradiate a light amount of 80 mJ / cm 2 . Since the thickness of the ink was 25 μm, the fixed information was 35 μm thicker. Therefore, after ejecting the same ink on it with the auxiliary head, the UV irradiation device 80
When irradiated with a light quantity of mJ / cm 2, the ink thickness is 4
It became 5 μm. It was found that the printed matter of Example 5 was evaluated for practical use at the time of storage.
【００４１】[0041]
【発明の効果】本発明の記録装置は、従来紫外線や電子
線等で記録液を硬化させる方式のプリンタにおいて問題
とされてきたインクの厚みが改善され、インクジェット
記録と他方式の画像形成装置による記録を組み合わせた
記録物の印刷品質および保管性能が良好な記録装置およ
びその記録物を提供することが可能となった。The recording apparatus of the present invention improves the ink thickness, which has been a problem in the conventional printer of the type that cures the recording liquid with ultraviolet rays, electron beams, etc. It has become possible to provide a recording apparatus and a recording apparatus which are excellent in print quality and storage performance of a recorded matter in which recording is combined.
【図１】 本発明の記録装置で作成される印刷物の一例
を示す模式図。FIG. 1 is a schematic diagram showing an example of a printed matter created by a recording apparatus of the present invention.
【図２】 本発明の記録装置の一例となる概略側面断面
図。FIG. 2 is a schematic side sectional view showing an example of the recording apparatus of the present invention.
【図３】 本発明の加工部の一例となる研磨装置の概略
断面図。FIG. 3 is a schematic cross-sectional view of a polishing apparatus that is an example of a processing unit of the present invention.
【図４】 本発明の加工部の一例となる加圧装置の概略
断面図。FIG. 4 is a schematic cross-sectional view of a pressurizing device that is an example of a processing unit of the present invention.
【図５】 本発明の加工部の一例となる加熱装置の概略
断面図。FIG. 5 is a schematic cross-sectional view of a heating device that is an example of a processing unit of the present invention.
【図６】 円筒形毛細管モデルに基づくインク吸収量と
浸透時間との関係を示すグラフ。FIG. 6 is a graph showing a relationship between an ink absorption amount and a penetration time based on a cylindrical capillary model.
【図７】 被記録体のインク吸収量と浸透時間との関係
を示すグラフ。FIG. 7 is a graph showing the relationship between the ink absorption amount of a recording medium and the permeation time.
【図８】 本発明で使用した可変情報用インクの組成と
印刷結果について示した表。FIG. 8 is a table showing compositions of variable information inks used in the present invention and printing results.
【符号の説明】
２は給紙部、３はインクジェットヘッド、４は露光機、
５は加工部、６は搬送ベルト、７は補助露光機、８は被
記録体、９はスタッカ、１０は補助インクジェットヘッ
ド、１９、３０は載置台、２０はラッピングテープ、２
１は供給ロール、２２は研磨ロール、２３は巻き取りロ
ール、２４は圧力調整装置、３１は圧力調整装置、３２
は加圧ロール、４０はヒータである。[Explanation of reference numerals] 2 is a paper feed unit, 3 is an inkjet head, 4 is an exposure device,
5 is a processing unit, 6 is a conveyor belt, 7 is an auxiliary exposure device, 8 is a recording medium, 9 is a stacker, 10 is an auxiliary inkjet head, 19 and 30 are mounting tables, 20 is a wrapping tape, 2
1 is a supply roll, 22 is a polishing roll, 23 is a take-up roll, 24 is a pressure adjusting device, 31 is a pressure adjusting device, 32
Is a pressure roll, and 40 is a heater.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 樫村 顕 茨城県ひたちなか市武田1060番地 日立工 機株式会社内 Ｆターム(参考） 2C056 EA13 EB27 EC41 FC02 FC06 FD07 HA41 HA45 HA46 HA47 2H086 BA05 BA15 BA51 ─────────────────────────────────────────────────── ─── Continued front page (72) Inventor Akira Kashimura Hitachiko, 1060 Takeda, Hitachinaka City, Ibaraki Prefecture Machine Co., Ltd. F term (reference) 2C056 EA13 EB27 EC41 FC02 FC06 FD07 HA41 HA45 HA46 HA47 2H086 BA05 BA15 BA51
Claims (9)
情報を印刷する可変情報印刷部を有する記録装置におい
て、前記可変情報記録部が紫外線や電子線等を照射する
ことにより硬化する特性を有するインクを吐出するイン
クジェットヘッドであることを特徴とする記録装置。1. A recording apparatus having a variable information printing section for printing variable information outside a fixed information printing area on a recording medium, wherein the variable information recording section is cured by irradiation with ultraviolet rays or electron beams. A recording apparatus, which is an inkjet head that ejects ink having characteristics.
滴の厚みを固定情報の厚みの±１５μｍとするか、イン
ク滴自体の厚みを１５μｍ以下にすることを特徴とする
記録装置。2. The recording apparatus according to claim 1, wherein the thickness of the ink droplet on the recording medium printed by the variable information recording unit is set to ± 15 μm of the fixed information thickness or the thickness of the ink droplet itself. Is 15 μm or less.
て、 前記被記録体のインク吸収係数が０．７(ｍｌ／ｍ２)／
(ｍｓ)０．５より大きいことを特徴とする記録装置。3. The recording apparatus according to claim 1, wherein the recording medium has an ink absorption coefficient of 0.7 (ml / m 2 ) /
(ms) A recording device characterized by being larger than 0.5 .
滴の厚みを固定情報の厚みの±１５μｍとするか、イン
ク滴自体の厚みを１５μｍ以下にするための手段が研磨
によるものであることを特徴とする記録装置。4. The recording apparatus according to claim 2, wherein the thickness of the ink droplet printed on the recording medium by the variable information recording unit is ± 15 μm of the fixed information or the thickness of the ink droplet itself. The recording apparatus, wherein the means for reducing the thickness to 15 μm or less is by polishing.
滴の厚みを固定情報の厚みの±１５μｍとするか、イン
ク滴自体の厚みを１５μｍ以下にするための手段が加圧
によるものであることを特徴とする記録装置。5. The recording apparatus according to claim 2, wherein the thickness of the ink droplet on the recording medium printed by the variable information recording unit is set to ± 15 μm of the fixed information thickness or the thickness of the ink droplet itself. The recording apparatus, wherein the means for reducing the thickness to 15 μm or less is by pressurization.
滴の厚みを固定情報の厚みの±１５μｍとするか、イン
ク滴自体の厚みを１５μｍ以下にするための手段が加熱
によるものであることを特徴とする記録装置。6. The recording apparatus according to claim 2, wherein the thickness of the ink droplet on the recording medium printed by the variable information recording unit is ± 15 μm of the thickness of the fixed information, or the thickness of the ink droplet itself. The recording device, wherein the means for reducing the thickness to 15 μm or less is by heating.
滴の厚みを固定情報の厚みの±１５μｍとするか、イン
ク滴自体の厚みを１５μｍ以下にするための手段とし
て、補助インクジェットヘッドおよび補助露光機を備え
たことを特徴とする記録装置。7. The recording apparatus according to claim 2, wherein the thickness of the ink droplet printed on the recording medium by the variable information recording portion is set to ± 15 μm of the fixed information thickness or the thickness of the ink droplet itself. A recording apparatus provided with an auxiliary inkjet head and an auxiliary exposure device as means for reducing the thickness to 15 μm or less.
滴の厚みを固定情報の厚みの±１５μｍとするか、イン
ク滴自体の厚みを１５μｍ以下にするための手段とし
て、請求項４〜７のいずれか２手段以上を組み合わせた
ことを特徴とする記録装置。8. The recording apparatus according to claim 2, wherein the thickness of the ink droplet printed on the recording medium by the variable information recording unit is ± 15 μm of the thickness of the fixed information, or the thickness of the ink droplet itself. A recording apparatus, characterized in that, as a means for reducing the thickness to 15 μm or less, two or more means of any one of claims 4 to 7 are combined.
て、 オフセットインキにより印刷されている固定情報を有す
る被記録体を使用することを特徴とする記録装置。9. The recording apparatus according to claim 1, wherein a recording medium having fixed information printed with offset ink is used.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001337780A JP4105422B2 (en) | 2001-11-02 | 2001-11-02 | Recording device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001337780A JP4105422B2 (en) | 2001-11-02 | 2001-11-02 | Recording device |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2008041104A Division JP4540718B2 (en) | 2008-02-22 | 2008-02-22 | Recording device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2003136697A true JP2003136697A (en) | 2003-05-14 |
| JP4105422B2 JP4105422B2 (en) | 2008-06-25 |
Family
ID=19152371
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2001337780A Expired - Lifetime JP4105422B2 (en) | 2001-11-02 | 2001-11-02 | Recording device |
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| Country | Link |
|---|---|
| JP (1) | JP4105422B2 (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7290873B2 (en) | 2004-03-18 | 2007-11-06 | Ricoh Printing Systems, Ltd. | Ink jet recording method |
| JP2009226755A (en) * | 2008-03-24 | 2009-10-08 | Seiko Epson Corp | Recording device and temperature control method of conveying belt for the recording device |
| US7651212B2 (en) | 2005-01-24 | 2010-01-26 | Fujifilm Corporation | Image forming apparatus and image forming method |
| JP2012101492A (en) * | 2010-11-11 | 2012-05-31 | Fujifilm Corp | Inkjet recording apparatus and image forming method |
| JP2014177136A (en) * | 2014-06-18 | 2014-09-25 | Komori Corp | Rolled paper printer |
| JP2014205358A (en) * | 2014-06-18 | 2014-10-30 | 株式会社小森コーポレーション | Paper roll printer |
| JP2015093463A (en) * | 2013-11-13 | 2015-05-18 | 株式会社リコー | Image formation device |
| US9931831B2 (en) | 2010-04-06 | 2018-04-03 | Komori Corporation | Web printing press |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4915971B2 (en) * | 2010-03-17 | 2012-04-11 | 株式会社ミマキエンジニアリング | Inkjet printer using UV curable ink |
-
2001
- 2001-11-02 JP JP2001337780A patent/JP4105422B2/en not_active Expired - Lifetime
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7290873B2 (en) | 2004-03-18 | 2007-11-06 | Ricoh Printing Systems, Ltd. | Ink jet recording method |
| US7651212B2 (en) | 2005-01-24 | 2010-01-26 | Fujifilm Corporation | Image forming apparatus and image forming method |
| JP2009226755A (en) * | 2008-03-24 | 2009-10-08 | Seiko Epson Corp | Recording device and temperature control method of conveying belt for the recording device |
| US9931831B2 (en) | 2010-04-06 | 2018-04-03 | Komori Corporation | Web printing press |
| JP2012101492A (en) * | 2010-11-11 | 2012-05-31 | Fujifilm Corp | Inkjet recording apparatus and image forming method |
| CN102529407A (en) * | 2010-11-11 | 2012-07-04 | 富士胶片株式会社 | Inkjet recording apparatus and image forming method |
| EP2452823A3 (en) * | 2010-11-11 | 2013-01-23 | Fujifilm Corporation | Inkjet recording apparatus and image forming method |
| US8702225B2 (en) | 2010-11-11 | 2014-04-22 | Fujifilm Corporation | Inkjet recording apparatus and image forming method |
| JP2015093463A (en) * | 2013-11-13 | 2015-05-18 | 株式会社リコー | Image formation device |
| JP2014177136A (en) * | 2014-06-18 | 2014-09-25 | Komori Corp | Rolled paper printer |
| JP2014205358A (en) * | 2014-06-18 | 2014-10-30 | 株式会社小森コーポレーション | Paper roll printer |
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