JPS62225390A - Matter to be recorded - Google Patents
Matter to be recordedInfo
- Publication number
- JPS62225390A JPS62225390A JP61069426A JP6942686A JPS62225390A JP S62225390 A JPS62225390 A JP S62225390A JP 61069426 A JP61069426 A JP 61069426A JP 6942686 A JP6942686 A JP 6942686A JP S62225390 A JPS62225390 A JP S62225390A
- Authority
- JP
- Japan
- Prior art keywords
- recording material
- pigment
- ink
- recording
- recorded
- 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.)
- Pending
Links
- 239000000049 pigment Substances 0.000 claims abstract description 39
- 239000000835 fiber Substances 0.000 claims abstract description 3
- 239000000463 material Substances 0.000 claims description 80
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 abstract description 8
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 abstract description 6
- 238000010521 absorption reaction Methods 0.000 abstract description 5
- 229920001131 Pulp (paper) Polymers 0.000 abstract description 4
- 229910000019 calcium carbonate Inorganic materials 0.000 abstract description 4
- 238000000576 coating method Methods 0.000 abstract description 4
- 239000000470 constituent Substances 0.000 abstract description 4
- 230000000740 bleeding effect Effects 0.000 abstract description 3
- 239000011248 coating agent Substances 0.000 abstract description 3
- 239000002245 particle Substances 0.000 abstract description 3
- 239000005909 Kieselgur Substances 0.000 abstract description 2
- 206010061592 cardiac fibrillation Diseases 0.000 abstract description 2
- 239000004927 clay Substances 0.000 abstract description 2
- 230000002600 fibrillogenic effect Effects 0.000 abstract description 2
- 239000000377 silicon dioxide Substances 0.000 abstract description 2
- 239000007788 liquid Substances 0.000 description 23
- 238000000034 method Methods 0.000 description 20
- 239000000123 paper Substances 0.000 description 16
- MTHSVFCYNBDYFN-UHFFFAOYSA-N diethylene glycol Chemical compound OCCOCCO MTHSVFCYNBDYFN-UHFFFAOYSA-N 0.000 description 12
- 230000035515 penetration Effects 0.000 description 9
- 239000011148 porous material Substances 0.000 description 8
- 239000000843 powder Substances 0.000 description 5
- 239000002994 raw material Substances 0.000 description 5
- 239000000126 substance Substances 0.000 description 5
- 239000002202 Polyethylene glycol Substances 0.000 description 4
- 229920001223 polyethylene glycol Polymers 0.000 description 4
- 239000007787 solid Substances 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 3
- 239000002270 dispersing agent Substances 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
- 239000012466 permeate Substances 0.000 description 3
- -1 regulators Substances 0.000 description 3
- 239000004372 Polyvinyl alcohol Substances 0.000 description 2
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 2
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 description 2
- 239000011230 binding agent Substances 0.000 description 2
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 description 2
- 229920006319 cationized starch Polymers 0.000 description 2
- 239000011247 coating layer Substances 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 239000002655 kraft paper Substances 0.000 description 2
- 239000010410 layer Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000691 measurement method Methods 0.000 description 2
- 239000001254 oxidized starch Substances 0.000 description 2
- 235000013808 oxidized starch Nutrition 0.000 description 2
- 229920002451 polyvinyl alcohol Polymers 0.000 description 2
- 238000001179 sorption measurement Methods 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 239000004094 surface-active agent Substances 0.000 description 2
- 229910021536 Zeolite Inorganic materials 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 238000007754 air knife coating Methods 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 239000002216 antistatic agent Substances 0.000 description 1
- 238000007611 bar coating method Methods 0.000 description 1
- 235000019241 carbon black Nutrition 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- XLIDPNGFCHXNGX-UHFFFAOYSA-N dialuminum;oxygen(2-);silicon(4+) Chemical compound [O-2].[O-2].[O-2].[O-2].[O-2].[Al+3].[Al+3].[Si+4] XLIDPNGFCHXNGX-UHFFFAOYSA-N 0.000 description 1
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 description 1
- LGWXIBBJZQOXSO-UHFFFAOYSA-L disodium 5-acetamido-4-hydroxy-3-[(2-methylphenyl)diazenyl]naphthalene-2,7-disulfonate Chemical compound [Na+].[Na+].OC1=C2C(NC(=O)C)=CC(S([O-])(=O)=O)=CC2=CC(S([O-])(=O)=O)=C1N=NC1=CC=CC=C1C LGWXIBBJZQOXSO-UHFFFAOYSA-L 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000635 electron micrograph Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 239000007850 fluorescent dye Substances 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 239000011121 hardwood Substances 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000000025 natural resin Substances 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000003755 preservative agent Substances 0.000 description 1
- 238000001454 recorded image Methods 0.000 description 1
- 239000011122 softwood Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 230000008961 swelling Effects 0.000 description 1
- 239000001040 synthetic pigment Substances 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
- 239000000454 talc Substances 0.000 description 1
- 229910052623 talc Inorganic materials 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000009827 uniform distribution Methods 0.000 description 1
- 239000010457 zeolite Substances 0.000 description 1
- 239000011787 zinc oxide Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M5/00—Duplicating or marking methods; Sheet materials for use therein
- B41M5/50—Recording sheets characterised by the coating used to improve ink, dye or pigment receptivity, e.g. for ink-jet or thermal dye transfer recording
- B41M5/52—Macromolecular coatings
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M5/00—Duplicating or marking methods; Sheet materials for use therein
- B41M5/50—Recording sheets characterised by the coating used to improve ink, dye or pigment receptivity, e.g. for ink-jet or thermal dye transfer recording
- B41M5/52—Macromolecular coatings
- B41M5/5218—Macromolecular coatings characterised by inorganic additives, e.g. pigments, clays
Landscapes
- Ink Jet Recording Methods And Recording Media Thereof (AREA)
- Paper (AREA)
Abstract
Description
【発明の詳細な説明】
［産業上の利用分野］
本発明は、被記録材に関し、特にインク吸収性及び筆記
性に優れた被記録材に関する。DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a recording material, and particularly to a recording material having excellent ink absorbency and writability.
［従来の技術］
インクジェット記録方法は、種々のインク吐出方式例え
ば、静電吸引方式、圧電素子を用り１てインクに機械的
振動又は変位を与える方式、インクを加熱して発泡させ
、その圧力を利用する方式等により、インクの小滴を発
生、飛翔させ、それらの一部もしくは全部を紙などの被
記録材に竹刀させて記録を行うものであるが、騒音の発
生が少なく、高速印字、多色印字の行える記録方法とし
て注目されている。[Prior Art] Inkjet recording methods include various ink ejection methods, such as an electrostatic suction method, a method using a piezoelectric element to apply mechanical vibration or displacement to the ink, and a method in which the ink is heated and foamed to generate pressure. In this method, small droplets of ink are generated and made to fly, and some or all of them are applied to a recording material such as paper to perform recording, but it generates less noise and prints at high speed. , is attracting attention as a recording method that allows multicolor printing.
このインクジェット記録方法に使用される被記録材とし
ては、従来、一般にプレーンペーパーと呼ばれている市
販の上、中質紙やインクジェット記録用紙と称される被
記録材が使われてきた。As the recording material used in this inkjet recording method, there have conventionally been used commercially available recording materials generally called plain paper, medium-quality paper, and recording materials called inkjet recording paper.
市販の上、中質紙は、優れた筆記性、印刷適性を有して
いるが、インクジェット記録を行うと、以下に述べる欠
点を有している。Commercially available medium-quality paper has excellent writability and printability, but when inkjet recording is performed, it has the following drawbacks.
ｌ）インクジェット記録後、記録装置の一部あるいは指
等が記録部に触れると、インクの吸収が速やかでないた
め、吸収されないままのインクがこすれて汚れが生じ、
画像品位を著しく低下させる。ときには判読が不可能に
なることもある。l) After inkjet recording, if a part of the recording device or your finger touches the recording section, the ink will not be absorbed quickly, so the unabsorbed ink will rub off and cause stains.
Significantly reduces image quality. Sometimes it is impossible to decipher.
２）インクが被記録材に付着した後、ドツトからひげ状
のものが発生し、真円度の低いドツトになる。このため
ドツト形状が悪く、鮮明な画像を得ることができない。2) After the ink adheres to the recording material, whiskers are generated from the dots, resulting in dots with low roundness. For this reason, the dot shape is poor and a clear image cannot be obtained.
一方、インクジェット記録袋この性能の向上と普及に伴
い、高解像、高品位な記録画像を得るために、インクジ
ェット用被記録材として種々の被記録材が提案されてい
る。On the other hand, as the performance of inkjet recording bags has improved and become more widespread, various recording materials have been proposed as inkjet recording materials in order to obtain high-resolution, high-quality recorded images.
例えば、特開昭５９−３５９７７号公報や特開昭５８−
１３２５８６号公報などには、インク吸収性が高く、且
つ発色性の優れたインクジェット用コート紙が記載され
ているが、これらのコート紙には以下に述べる欠点があ
る。For example, JP-A-59-35977 and JP-A-58-
No. 132586 and the like describe coated papers for inkjet use that have high ink absorbency and excellent color development, but these coated papers have the following drawbacks.
３）被記録材に鉛筆や万年筆等の筆記具で筆記を行うと
、インク受容層がけずれてしまい、正常に筆記できない
。3) When writing on a recording material with a writing instrument such as a pencil or fountain pen, the ink receiving layer is scratched and writing cannot be performed normally.
４）被記録材にインクジェット記録を行うと、被記録材
と記録装置の紙送り部分等で機械的摩擦力によりコート
層がはがれる、いわゆる粉落ちが発生し、記録装置を汚
してしまう、特に、粉落ちしたインク受容層が、インク
ジェット記録装置のヘッドに付着すると、ヘッドノズル
の目詰りの原因となる。4) When inkjet recording is performed on a recording material, the coating layer is peeled off due to mechanical friction between the recording material and the paper feeding part of the recording device, so-called powder falling, which stains the recording device. If the fallen ink receiving layer adheres to the head of an inkjet recording device, it may cause clogging of the head nozzle.
また、特開昭５２−７４３４０号公報に記載されたイン
クジェット用紙には、インクジェット記録を行うと以下
の欠点がある。Furthermore, the inkjet paper described in JP-A-52-74340 has the following drawbacks when inkjet recording is performed.
５）ドツト濃度が低い。5) Low dot density.
６）ドツト周辺がぼけやすく、鮮明な画像を得ることが
できない。6) The dot periphery tends to be blurred, making it impossible to obtain a clear image.
？）記録面の裏にインクかにじみでる現象、いわ□ゆる
裏抜けが生じる。? ) A phenomenon in which ink bleeds onto the back side of the recording surface, so-called □ bleed-through occurs.
このように、従来の被記録材には以上述べた種々の欠点
があり、これらすべての欠点を解決した被記録材は未だ
得られていないのが現状である。As described above, conventional recording materials have the various drawbacks mentioned above, and the current situation is that a recording material that solves all of these drawbacks has not yet been obtained.
また、従来の被記録材では、顔料の被覆率を高くすると
、印刷適性や筆記性などを考慮に入れた場合、含有する
バインダー量も増加させなければならないが、これに伴
って濡れ性の低下や空孔の減少などにより液体の浸透が
速やかでなくなる。In addition, in conventional recording materials, when increasing the pigment coverage, the amount of binder contained must also be increased when printability and writability are taken into consideration, but this leads to a decrease in wettability. Due to the decrease in pores and pores, liquid penetration becomes slower.
一方、従来のインクジェット用紙は、インク吸収性の向
上をめざしており、空孔が多く、バインダー量が少ない
ため、被記録材から顔料がはがれやすくなり、粉落ちや
筆記性の低下などの問題が生じている。On the other hand, conventional inkjet paper aims to improve ink absorption, and because it has many pores and a small amount of binder, pigment easily peels off from the recording material, causing problems such as powder falling and poor writing performance. It is occurring.
ところで、一般に、被記録材への液体の浸透挙動につい
ては、いまだに明確な説明がなされていない。By the way, in general, the permeation behavior of a liquid into a recording material has not yet been clearly explained.
液体の多孔質物質への浸透は、ルーカス・ヴアシュバー
ン（Ｌｕｃａｓ−Ｗａｓｈｂｕｒｎ）の式である程度説
明される。The penetration of liquids into porous materials is explained in part by the Lucas-Washburn equation.
しかし、この式は、管内流が層流であること、流速の加
速度が非常に小さい等の前提条件のもとで、ハーゲン・
ボアズイユ（Ｈａｇｅｎ−Ｐｏｉｓｅｕｉｌｌｅ）の式
を発展させたものであるため、ルーカス・ヴアシュバー
ンの式が実際の現象に適用される範囲はかなり限定され
る。However, this formula is based on the preconditions that the flow in the pipe is laminar and the acceleration of the flow velocity is very small.
Since it is a development of the Hagen-Poiseuille equation, the scope of application of the Lucas-Werschburn equation to actual phenomena is quite limited.
例えば、非水系の液体の浸透については、被記録材の性
質を限定すれば適用が可能であることが立証されている
。For example, it has been proven that the penetration of non-aqueous liquids can be applied if the properties of the recording material are limited.
しかし、水系の液体については、液体の浸透に伴い１表
面物性や膨潤による液体流路の経時変化等のために、ル
ーカス・ヴアシュバーン式を直接適用できないと言われ
ている。However, it is said that the Lucas-Worschburn equation cannot be directly applied to aqueous liquids due to physical properties of the surface as the liquid permeates and changes over time in the liquid flow path due to swelling.
一方、被記録材への液体の浸透を支配している因子とし
て、被記録材の固体表面張力、濡れ性、吸着能、空孔の
大きさ、形状分布等の幾何構造等が考えられている。On the other hand, the solid surface tension of the recording material, wettability, adsorption capacity, geometric structure such as pore size, shape distribution, etc. are considered to be factors that control the penetration of liquid into the recording material. .
これらの支配因子を厳密に測定することは、現在不可源
である。It is currently impossible to accurately measure these governing factors.
例えば、被記録材を構成している物質の個々の固体表面
張力の測定は可能である。しかし、これらの物質の複雑
な混合形態である被記録材の固体表面張力を厳密に測定
することは、表面形状が複雑であり１種々の物質が不均
一に存在しているため不可能である。For example, it is possible to measure the solid surface tension of each substance constituting the recording material. However, it is impossible to accurately measure the solid surface tension of a recording material that is a complex mixture of these substances because the surface shape is complex and various substances exist unevenly. .
このことは、被記録材の濡れ性や吸着能等についても同
様である。This also applies to the wettability, adsorption capacity, etc. of the recording material.
また、被記録材の幾何構造については、平滑度（ＪＩＳ
−Ｐ−８１１９） 、透気度（ＪＩＳ−Ｐ−８１１７）
など、総体的な測定方法以外に厳密な測定方法がいくつ
か提案されているが、今だに確立されていない。In addition, regarding the geometric structure of the recording material, smoothness (JIS
-P-8119), air permeability (JIS-P-8117)
In addition to comprehensive measurement methods, several strict measurement methods have been proposed, but none have been established yet.
更に、被記録材への液体の浸透を支配している各因子は
、液体の浸透に伴って相互に影響を及ぼしあい、また時
間によっても変化する。Further, the factors governing the penetration of the liquid into the recording material influence each other as the liquid penetrates, and also change with time.
近年、被記録材への液体の浸透挙動について、経時変化
を考慮に入れた解析がなされているが、限定された系に
ついてのみ説明が可能であって、一般の浸透挙動を説明
するに致っていない。In recent years, the permeation behavior of liquids into recording materials has been analyzed by taking into account changes over time, but it is only possible to explain the permeation behavior for a limited number of systems, and it is difficult to explain the permeation behavior in general. Not yet.
以上説明したように、被記録材への液体の浸透挙動は、
これを支配している被記録材の基本的な各因子の正確な
測定が困難であること、更にこれら因子の相互作用及び
経時変化等が解明されていないこと等のために、いまだ
明確ではない。As explained above, the permeation behavior of the liquid into the recording material is
This is still not clear because it is difficult to accurately measure the basic factors of the recording material that govern this, and furthermore, the interaction of these factors and changes over time have not been clarified. .
［発明が解決しようとする問題点］
本発明者らは、液体の浸透挙動を支配している被記録材
の種々の因子の測定方法の検討、並びにこれら因子の測
定結果と液体の浸透挙動との関係を研究していたところ
、意外にも被記録材表裏両面の顔料被覆率と被記録材へ
の液体の浸透挙動との間に一定の関係があることを見出
し、本発明に致ったのである。[Problems to be Solved by the Invention] The present inventors have studied methods for measuring various factors of recording materials that govern the permeation behavior of liquids, and have investigated the measurement results of these factors and the permeation behavior of liquids. While researching the relationship between the two, it was unexpectedly discovered that there is a certain relationship between the pigment coverage on both the front and back sides of the recording material and the permeation behavior of the liquid into the recording material, leading to the invention. It is.
そこで本発明の目的は、前述の如き従来技術の種々の欠
点を解消した被記録材を提供することにある。SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a recording material that eliminates the various drawbacks of the prior art as described above.
つまり本発明の目的は、速やかなインク吸収性を有し、
且つ鮮明な画像を形成する高性能の被記録材を提供する
ことにある。In other words, the object of the present invention is to have rapid ink absorption;
Another object of the present invention is to provide a high-performance recording material that forms a clear image.
また本発明の目的は、筆記性に優れた被記録材を提供す
ることにある。Another object of the present invention is to provide a recording material with excellent writability.
［問題点を解決するための手段］ 上記の目的は、以下の本発明によって達成される。[Means for solving problems] The above object is achieved by the present invention as follows.
すなわち本発明は、Ｈ１１ｆｔ！ｉが主成分である被記
録面を有する被記録材に於いて、該被記録材の顔料被ｍ
率が表裏面ともに２〜２０％の範囲であり、１１゜つ顔
料被覆率の表裏面の差が１５％以下であることを特徴と
する被記録材である。That is, the present invention is H11ft! In a recording material having a recording surface in which i is the main component, the pigment coating m of the recording material
The recording material is characterized in that the pigment coverage ratio is in the range of 2 to 20% on both the front and back surfaces, and the difference in pigment coverage on the front and back surfaces is 15% or less.
［作用］
本発明の被記録材は、主として木材パルプと顔料から構
成される。[Function] The recording material of the present invention is mainly composed of wood pulp and pigment.
本発明で使用する木材パルプは、サイクロンやメツシュ
などを使用して分別したものであり、また、内部フィブ
リル化が進んだものが好ましい。The wood pulp used in the present invention is one that has been separated using a cyclone, a mesh, etc., and is preferably one that has undergone internal fibrillation.
また１本発明で使用する顔料としては１例えばシリカ、
クレー、ケイソウ土、炭酸カルシウム、硫酸カルシウム
、硫酸バリウム、ケイ酸アルミニウム、合成ゼオライト
、アルミナ、酸化亜鉛、サテンホワイト等が挙げられる
。In addition, examples of pigments used in the present invention include silica,
Examples include clay, diatomaceous earth, calcium carbonate, calcium sulfate, barium sulfate, aluminum silicate, synthetic zeolite, alumina, zinc oxide, satin white, and the like.
これらの顔料のうち、良好なインク吸収性やにじみの度
合を付与するためには、平均粒子径が０゜０５〜５０ｇ
ｍ、より好ましくは０．１〜２０ＩＬｍ程度のものが好
適であり、その１種以上が用いられる。Among these pigments, in order to provide good ink absorbency and degree of bleeding, it is necessary to use pigments with an average particle size of 0°05 to 50g.
m, more preferably about 0.1 to 20 ILm, and one or more of them are used.
顔料の粒径があまりにも大き過ぎると、被記録材の水平
方向へのインクのにじみの度合が不均一となり、ドツト
の大きさや形状の制御がしにくくなるため好ましくない
。If the particle size of the pigment is too large, the degree of ink bleeding in the horizontal direction of the recording material will become uneven, making it difficult to control the size and shape of the dots, which is not preferable.
本発明では、目的に応じて、ガラス繊維、合成ｍ雄など
を併用しても良い、また、上記顔料とともにプラスチッ
クピグメント等の他の顔料類２分散剤、蛍光染料、ｐＨ
調整剤、潤滑剤、防腐剤、界面活性剤等の各種添加剤を
混在させすることも可能である。In the present invention, depending on the purpose, glass fibers, synthetic pigments, etc. may be used in combination.In addition to the above pigments, other pigments such as plastic pigments, 2 dispersants, fluorescent dyes, pH
It is also possible to mix various additives such as regulators, lubricants, preservatives, and surfactants.
更に、天然、合成樹脂１分散剤、界面活性剤、帯電防止
剤などをサイズプレス法、スプレーコーティング法、ロ
ールコーティング法、ロッドバーコーティング法、エア
ナイフコーティング法などの公知の方法で被記録材に塗
布することも可能である。Furthermore, natural or synthetic resin 1 dispersants, surfactants, antistatic agents, etc. are applied to the recording material using known methods such as size press method, spray coating method, roll coating method, rod bar coating method, and air knife coating method. It is also possible to do so.
本発明の被記録材を製造する方法としては、長網抄紙法
等があるが、ツインワイヤー法、抄き合わせ法等が特に
好ましい。Methods for manufacturing the recording material of the present invention include fourdrinier paper making methods and the like, but twin wire methods, paper combining methods and the like are particularly preferred.
これらの方法を用いて、被記録材の構成物質の大きさや
形状などを改良したり、構成物質に規ＪＪＩＪ性をもた
せてたりして１本発明の被記録材を製造する。Using these methods, the recording material of the present invention is manufactured by improving the size, shape, etc. of the constituent materials of the recording material, or by imparting regular JJIJ properties to the constituent materials.
本発明でいう顔料被覆率（％）は、下式から求められる
。The pigment coverage (%) in the present invention is determined from the following formula.
顔料被覆率＝顔料被覆面ｙＩＦ／全面植Ｓ Ｘ １００
顔料被覆率を求める具体的方法としては、例えば、被記
録材両面の、１００〜３００倍の電子顕ｌｌ鏡写真を撮
り、コンプータにオンラインされたグラフィック・ディ
ジタイザ−で顔料の被覆面ａＦを測定し、全面積Ｓとに
より算出する方法がある。Pigment coverage = Pigment coated surface yIF/Full surface planting S X 100
A specific method for determining the pigment coverage is, for example, by taking electron micrographs of both sides of the recording material at a magnification of 100 to 300 times, and measuring the pigment-covered surface aF using a graphic digitizer connected online to the computer. , total area S.
本発明において、被記録材の顔料被覆率が表裏面ともに
２〜２０％の範囲にあるが、より好ましくは３〜１８％
の範囲である。In the present invention, the pigment coverage of the recording material is in the range of 2 to 20% on both the front and back surfaces, and more preferably 3 to 18%.
is within the range of
被記録材の顔料被覆率が２０％以下であると、被記録材
を構成している繊維が顔料に機械的にからみあい結合さ
れ、顔料が被記録材表面からはがれることを防止する。When the pigment coverage of the recording material is 20% or less, the fibers constituting the recording material are mechanically entangled and bonded to the pigment, thereby preventing the pigment from peeling off from the surface of the recording material.
そのため本発明の被記録材は、従来のインクジェット用
紙などに比較して、耐粉落ち性、筆記性に格段に優れた
ものである。Therefore, the recording material of the present invention has much better powder drop resistance and writability than conventional inkjet paper.
顔料被覆率が２％未満であると、粉落ちは発生しないが
、被記録材表面の空孔に液体がトラップされてその浸透
を阻害するため、液体の浸透が不均一になる。When the pigment coverage is less than 2%, powder fall does not occur, but the liquid is trapped in the pores on the surface of the recording material and impedes its penetration, resulting in uneven penetration of the liquid.
さらに本発明では、被記録材の顔料被覆率の表裏差が１
５％以下であり、より好ましくは３〜１５％の範囲であ
る。Furthermore, in the present invention, the difference in pigment coverage between the front and back sides of the recording material is 1
It is 5% or less, more preferably in the range of 3 to 15%.
被記録材各面の顔料被覆率がたとえ上記範囲内にあって
も、顔料被覆率の表裏差が１５％を超えるものは、液体
の浸透が速やかではなく且つ不均一である。Even if the pigment coverage on each side of the recording material is within the above range, if the difference in pigment coverage between the front and back sides exceeds 15%, the liquid will not penetrate quickly and will not be uniform.
被記録材の顔料被覆率の表裏差が１５％以下であるとい
うことは、断面構造におけて、厚さ方向の構造が均一で
あるということである。いいかえれば、被記録材を構成
している濡れ性の異なる物質が規則的に分布しており、
また同じ大きさの空孔が均一に分布しているということ
である。The fact that the difference in pigment coverage between the front and back sides of the recording material is 15% or less means that the structure in the thickness direction is uniform in the cross-sectional structure. In other words, the substances with different wettability that make up the recording material are regularly distributed,
It also means that pores of the same size are uniformly distributed.
液体の浸透は、厚さ方向に連続的に進むものであり、空
孔の大きさやその分布及び構成物質の分布が均一である
本発明の被記録材は、液体浸透における律速段階になる
要素がなく、液体の浸透が速やかで且つ均一に進行する
ものである。Liquid penetration progresses continuously in the thickness direction, and the recording material of the present invention, which has uniform pore size, uniform distribution, and constituent material distribution, has a rate-determining factor in liquid penetration. The liquid permeates quickly and uniformly.
更に本発明の被記録材は、従来のインクジェット用紙に
比べ、力学的強度、その中でも特に剛度、引っばり強度
、引き裂き強度に優れている。Furthermore, the recording material of the present invention is superior in mechanical strength, particularly in stiffness, tensile strength, and tear strength, as compared to conventional inkjet paper.
また本発明の被記録材は１表裏差がＷ４Ｆｉでないため
、インクジェット記録を行ったとき、表裏とも優れた画
像を形成することができる。Furthermore, since the recording material of the present invention does not have a W4Fi difference between the front and back sides, excellent images can be formed on both the front and back sides when inkjet recording is performed.
［実施例］ 次に実施例を挙げて、本発明を更に具体的に説明する。[Example] Next, the present invention will be explained in more detail with reference to Examples.
尚、特にことわりのない限り１部は重量基準である。Note that unless otherwise specified, 1 part is based on weight.
実施例１
広葉樹さらしクラフトパルプ（ＬＢＫＰ）と針葉樹さら
しクラフトパルプ（ＮＢＫＰ）を４＝１の割合で混合し
、フリーネス（Ｃ，Ｓ、Ｆ、） ４２０膳１に叩解した
ものを原料パルプとした。Example 1 Hardwood bleached kraft pulp (LBKP) and softwood bleached kraft pulp (NBKP) were mixed in a ratio of 4=1 and beaten to a freeness (C, S, F,) of 420 pieces 1, which was used as a raw material pulp.
この原料パルプに対し、タルク２０部ｆ樅雫字苓、
を配合して、第１図で示す装置を用い１両側の金網から
脱水して、手抄きシートを作成し、次に酸化デンプンを
エアースプレーで０゜８０ｇ／ｒｎ’塗布して１本発明
の被記録材１を得た。To this raw material pulp, 20 parts of talc,
were blended and dehydrated from wire mesh on both sides using the apparatus shown in Fig. 1 to create a handmade sheet, and then oxidized starch was applied at 0°80g/rn' by air spray to form the present invention. A recording material 1 was obtained.
実施例２
実施例１で用いた原料パルプに対し、炭酸カルシウム（
商品名；ニスカロン＃２０〇三共製粉（株）製）２０部
、アルキルケテンダイマー０．００１ 部、カチオン化
デンプン０．００２部を配合して、実施例１と同様に手
抄きシートを作成し、次にポリビニルアルコールをエア
ースプレーで０．５ ｇ／ｒｒｆ塗布して１本発明の被
記録材２を得た。Example 2 Calcium carbonate (
A handmade sheet was prepared in the same manner as in Example 1 by blending 20 parts of Niscalon #20 (manufactured by Sankyo Seifun Co., Ltd.), 0.001 part of alkyl ketene dimer, and 0.002 part of cationized starch. Then, polyvinyl alcohol was applied by air spray at a rate of 0.5 g/rrf to obtain a recording material 2 of the present invention.
実施例３
ＬＢＫＰとＮＢＫＰを１＝４の割合で混合し、フリーネ
ス（Ｃ，Ｓ、Ｆ、） ４１０ｍ１に叩解したものを原料
パルプとした。Example 3 LBKP and NBKP were mixed at a ratio of 1=4 and beaten to a freeness (C, S, F,) of 410 ml, which was used as a raw material pulp.
名：イオネッ） Ｎｏ−４００三洋化成工業（株）製）
０．８部を配合して、実施例１と同様に手抄きシートを
作成し１次にポリビニルアルコールをバーコーターで０
．５８／ｎｆ塗布して、本発明の被記録材３を得た。Name: Ionet) No-400 manufactured by Sanyo Chemical Industries, Ltd.)
A handmade sheet was prepared in the same manner as in Example 1 by blending 0.8 parts of polyvinyl alcohol with a bar coater.
．． 58/nf was applied to obtain a recording material 3 of the present invention.
実施例４
実施例３で用いた原料パルプに対し、実施例２で用いた
炭酸カルシウム２０部、アルキルケテンダイマーｏ、ｏ
ｏｔ部、カチオン化デンプン０．００２部、分散剤（商
品名； ＴＡＭＤＯ−１０日光ケミカルズ（株）製）０
．８部を配合して、実施例１と同様に手抄きシートを作
成し、次に酸化デンプンをバーコーターで０．８ ｇ／
ｍ’塗布して１本発明の被記録材４を得た。Example 4 To the raw material pulp used in Example 3, 20 parts of calcium carbonate used in Example 2, alkyl ketene dimer o, o
ot part, 0.002 part of cationized starch, dispersant (trade name: TAMDO-10 manufactured by Nikko Chemicals Co., Ltd.) 0
．． A handmade sheet was prepared in the same manner as in Example 1 by blending 8 parts of oxidized starch with a bar coater.
A recording material 4 of the present invention was obtained by applying m'.
比較例１
ベスグロコー）Ａ（商標名、２川製紙（株））を被記録
材５として用いた。Comparative Example 1 Bess Grocoe A (trade name, Futagawa Paper Co., Ltd.) was used as the recording material 5.
比較例２
タンダートに従って手抄きシートを作成し、被記録材６
とした。Comparative Example 2 A handmade sheet was created according to the standard, and recording material 6
And so.
比較例３
タンダートに従って手抄きシートを作成し、被記録材７
とした。Comparative Example 3 A handmade sheet was created according to the standard, and recording material 7
And so.
上記７Ｍの被記録材に対し、下記４種のインクを用いて
ピエゾ振動子によってインクを吐出させるオンデマンド
型インクジェット記録ヘッド（オリフィス径８５μｍ、
ピエゾ振動子駆動電圧６０ν、周波数３．１ＫＨｚ）を
有する記録装置を使用して、インクジェット記録を実施
した。An on-demand inkjet recording head (orifice diameter 85 μm,
Inkjet recording was performed using a recording device having a piezo vibrator drive voltage of 60 ν and a frequency of 3.1 KHz.
イエローインク
ｃ、ｒ、ダイレクトイエロー８Ｅｌ ５Ｆ１
！ジエチレングリコール １５部ポリエチ
レングリコール＃ ２００ ２０部水
７部部マゼン
タインク
Ｃ，１，アシッドレッド３５ ５部ジエチレ
ングリコール １５部ポリエチレングリコ
ール＃ ２００ ２０部水
７０部シアンインク
Ｃ，１，ダイレクトブルー８８ ５部ジエチレ
ングリコール １５部ポリエチレングリコ
ール＃２００ ２０部水
７０部ブラックインク
Ｃ，１，フードブラック２ ５部ジエチレン
グリコール １５部ポリエチレングリコー
ル＃ ２００ ２０部水
７０郁このようにして得ら
れた記録物に対して、本発明の目的に充分適合したもの
であるかどうかを。Yellow ink c, r, direct yellow 8El 5F1
! Diethylene glycol 15 parts Polyethylene glycol #200 20 parts Water
7 parts Magenta Ink C, 1, Acid Red 35 5 parts Diethylene glycol 15 parts Polyethylene glycol #200 20 parts Water
70 parts Cyan ink C, 1, Direct Blue 88 5 parts diethylene glycol 15 parts polyethylene glycol #200 20 parts water
70 parts Black Ink C, 1, Food Black 2 5 parts diethylene glycol 15 parts polyethylene glycol #200 20 parts water
70. Regarding the recorded material obtained in this way, I would like to know whether it is sufficiently suitable for the purpose of the present invention.
以下の方法に従って評価した。Evaluation was made according to the following method.
ｌ）顔料被覆率は、前述の方法によって求めた。l) Pigment coverage was determined by the method described above.
尚、被記録材の表裏に関しては、顔料被覆率の大きい方
をＡとし、小さい方をＢとした。Regarding the front and back sides of the recording material, the one with a larger pigment coverage was designated as A, and the one with a smaller pigment coverage was designated as B.
２）インク吸収性は、２色のインクを重ねて記録し、そ
の１秒後に被記録材表面上にインクの流れ出しがなく、
指で触れてもインクの流れ出しのないものをＯ，インク
の流れ出しはないが、指で触れると流れ出すものを×と
した。2) Ink absorption is measured by recording with two colors of ink overlapping each other, and no ink flowing out onto the surface of the recording material after 1 second.
When the ink does not flow out even when touched with a finger, it is marked O. When the ink does not flow out, but when touched with a finger, it flows out, it is marked as ×.
３）筆記性は、パネラ−２０名（男性１２名、女性８名
）に対して、２Ｈ，Ｈ，ＨＢ、Ｆ、Ｂの５種類の鉛筆で
筆記テストを行い、滑らかに筆記できた鉛筆の本数を得
点とし、その合計点を示した。3) Writing test was conducted on a panel of 20 people (12 men, 8 women) using 5 types of pencils: 2H, H, HB, F, and B. The number of shots was counted as a score, and the total score was shown.
４）画像品位は、パネラ−２０名（男性１２名、女性８
名）に対して、文字と図形が記録されたサンプルを見て
、画像の鮮明性についての質問に、良いを５点、やや良
いを４点、普通を３点、やや悪いを２点、悪いを１点と
して、その合計点を示した。4) Image quality was evaluated by 20 panelists (12 men, 8 women).
When asked about the sharpness of the image, 5 points were given as good, 4 points were given as fair, 3 points were given as fair, 2 points were given as poor, and 2 points were given as poor. 1 point and the total score is shown.
以上の結果を表１に示す。The above results are shown in Table 1.
表 １ 本インクが被記録材のベタ部で溢れて流れていた。Table 1 The main ink was overflowing and flowing on the solid area of the recording material.
［発明の効果］
以上のように１本発明の被記録材は、速やかな液体吸収
性を持ち、液体の浸透が均一に進むものである。[Effects of the Invention] As described above, the recording material of the present invention has rapid liquid absorption properties, and the liquid permeates uniformly.
また、本発明の被記録材は、コート層を設けなくても、
従来のインクジェット用紙と同程度のインク吸収性を示
し、且つ粉落ちが全くなかった。Further, the recording material of the present invention can be used without providing a coating layer.
It exhibited ink absorbency comparable to that of conventional inkjet paper, and no powder was shed at all.
更に本発明の被記録材は１両面記録が可能であり、しか
も鉛筆やボールペンなどに対しても優れた筆記性を有す
るものである。Furthermore, the recording material of the present invention is capable of recording on one side and has excellent writability with pencils, ballpoint pens, and the like.
本発明の被記録材は、従来のインクジェット用紙に比し
、剛度、引張り強度、引裂き強度に優れたものである。The recording material of the present invention has excellent stiffness, tensile strength, and tear strength compared to conventional inkjet paper.
第１図は、本発明の被記録材を製造する際に用いる装置
図である。
１、原料投入口
２、金網
３、コックFIG. 1 is a diagram of an apparatus used in manufacturing the recording material of the present invention. 1, Raw material input port 2, wire mesh 3, cock
Claims (3)
於いて、該被記録材の顔料被覆率が表裏面ともに２〜２
０％の範囲であり、且つ顔料被覆率の表裏面の差が１５
％以下であることを特徴とする被記録材。(1) In a recording material having a recording surface whose main component is fiber, the pigment coverage of the recording material is 2 to 2 on both the front and back surfaces.
0% range, and the difference in pigment coverage between the front and back surfaces is 15%.
% or less.
ある特許請求の範囲第１項記載の被記録材。(2) The recording material according to claim 1, wherein the pigment coverage is in the range of 3 to 18% on both the front and back surfaces.
請求の範囲第１項記載の被記録材。(3) The recording material according to claim 1, wherein the difference in pigment coverage between the front and back surfaces is 3 to 15%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61069426A JPS62225390A (en) | 1986-03-27 | 1986-03-27 | Matter to be recorded |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61069426A JPS62225390A (en) | 1986-03-27 | 1986-03-27 | Matter to be recorded |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62225390A true JPS62225390A (en) | 1987-10-03 |
Family
ID=13402281
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61069426A Pending JPS62225390A (en) | 1986-03-27 | 1986-03-27 | Matter to be recorded |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62225390A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0791474A2 (en) * | 1996-02-22 | 1997-08-27 | Seiko Epson Corporation | Ink jet recording sheet and ink jet recording method |
-
1986
- 1986-03-27 JP JP61069426A patent/JPS62225390A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0791474A2 (en) * | 1996-02-22 | 1997-08-27 | Seiko Epson Corporation | Ink jet recording sheet and ink jet recording method |
| EP0791474A3 (en) * | 1996-02-22 | 1998-01-07 | Seiko Epson Corporation | Ink jet recording sheet and ink jet recording method |
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