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JP4426208B2 - Toning method of paint - Google Patents

Toning method of paint Download PDF

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Publication number
JP4426208B2
JP4426208B2 JP2003128819A JP2003128819A JP4426208B2 JP 4426208 B2 JP4426208 B2 JP 4426208B2 JP 2003128819 A JP2003128819 A JP 2003128819A JP 2003128819 A JP2003128819 A JP 2003128819A JP 4426208 B2 JP4426208 B2 JP 4426208B2
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JP
Japan
Prior art keywords
paint
color
toning
dark
enamel
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JP2003128819A
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Japanese (ja)
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JP2004331791A (en
Inventor
徹 平山
昭夫 中村
一幸 松原
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Kansai Paint Co Ltd
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Kansai Paint Co Ltd
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Priority to JP2003128819A priority Critical patent/JP4426208B2/en
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Description

【0001】
【発明の属する技術分野】
本発明は、濃色塗料を簡便に且つ精度よく調色する方法、ならびに光輝性塗料の調色を濃色塗料の調色を利用して簡便に且つ精度よく行うことができる調色方法に関する。
【0002】
【従来の技術】
従来、塗料の調色について、特開昭63−153677号公報において、ポータブルなカラーメータを使用して調色すべき選択色の色相、彩度、明度を表す色データを記憶し、前記カラーメータ内の前記色データをコンピュータに接続するとともに、利用可能な複数の塗料配合を前記コンピュータ内に記憶し、前記記憶した利用可能な色公式によって指定された各塗料の色相、彩度、輝度を表す色データを前記コンピュータ内に記憶し、前記カラーメータから受取った選択色の色データと、前記記憶した利用可能な塗料配合のそれぞれを表す前記記憶した色データとを比較して最近似整合を見つけ出し、前記最近似整合として見つけ出された前記色データによって表される記憶した塗料配合を選択し、これによって前記選択色に対する色合わせを行う方法及び装置が提案されている(特許文献1参照)。
【0003】
しかしながら、調色を行うために使用する測色データは、分光光度計の特性上、散乱因子が少ない色、すなわち濃色では測色感度が悪くなるという問題があった。そのため、濃色塗料では、合格レベルまで調色するのが難しく調色回数が多くなりがちであった。
【0004】
また、近年、自動車などの塗色は、個人の好みの多様化、美粧性の向上などの観点からアルミニウム粉や光輝性マイカ粉が配合された光輝感のある塗色が増加している。この光輝感のある塗色の色合わせを行う場合、上記特開昭63−153677号公報に記載された色合わせ方法では、色合わせ精度がいまだ十分ではなかった。
【0005】
特開平10−310727号公報には、光輝材又は着色材と光輝材を配合したメタリック・パール系塗料の目標色に合致した着色材と光輝材の配合比又は光輝材の配合量を求めるメタリック・パール系塗料の調色方法において、使用する光輝材の配合量又は着色材及び光輝材の配合比を変化させた複数の塗板サンプルを、予め変角分光光度計により分光反射率を測定してコンピュータのメモリ上に記憶させておき、これを用いて調色する際に添加する光輝材の添加量を変えることにより生じる変角分光反射率の変化を取り込みつつ再現分光反射率を予測計算し、光輝材の配合量又は着色材と光輝材の適切な配合比を求める方法が提案されている(特許文献2参照)。
【0006】
しかしながら、この方法においては、光輝材の配合量又は着色材及び光輝材の配合比を変化させた塗板サンプルを1色材について、少なくとも5〜6水準程度必要であり、基礎データ作成に多くの労力が必要であり、計算アルゴリズムも複雑であることから使用する装置のコストが高くなる要因となる。
【0007】
また、特開2001−221690号公報には、(A)測色計と、(B)ミクロ光輝感測定器と、(C)複数の塗料配合、該各塗料配合に対応した色データとミクロ光輝感データ、複数の原色塗料の色特性データとミクロ光輝感特性データが登録されており、該塗料配合及び該各データを利用した色合わせ計算ロジックが作動するコンピュータとから構成されてなる塗料のコンピュータ調色装置を用いた光輝感を有する塗料にも対応できる調色方法が記載されている(特許文献3参照)。
【0008】
しかしながら、この方法に使用する各塗料配合に対応した色データとミクロ光輝感データ、複数の原色塗料の色特性データとミクロ光輝感特性データの登録に非常に多くの労力、コストがかかり、計算アルゴリズムも複雑であることから使用する装置のコスト高の要因となる。
【0009】
さらに、特開2001−50891号公報には、セルに充填された着色液を測色する方法であって、セルの測定部位を含む面に対して上記着色液を吐出循環することによって、上記セルの測定部位における着色液を連続して更新しながら、測色することを特徴とする液体測色方法が記載されている(特許文献4参照)。
【0010】
しかしながら、この方法に使用する各光輝性塗料の配合に対応した色データや複数の原色塗料の色特性データの登録に非常に多くの労力、コストがかかり、また、セルの測定部位を含む面に対して着色液を吐出循環する必要があることから使用する装置のコスト高の要因となる。
【0011】
この出願の発明に関連する先行技術文献情報としては次のものがある。
【0012】
【特許文献1】
特開昭63−153677号公報
【特許文献2】
特開平10−310727号公報
【特許文献3】
特開2001−221690号公報
【特許文献4】
特開2001−50891号公報
【0013】
【発明が解決しようとする課題】
上記特開平10−310727号公報及び特開2001−221690号公報に記載の方法のいずれにおいても、光輝感を有する塗料を調色する場合、塗料の基本配合が既知である繰返し調色においても、光輝材を含む塗膜の光学特性を把握しながらの調色であり、色以外に光輝感が要因として含まれている為、調色が複雑になり出荷合格レベルに到達するまでの調色回数が多くなり、調色の為の塗装板作成などの工数が多くなるといった問題があった。
【0014】
また、特開2001−50891号公報に記載の方法においては、光輝性塗料の調色のための塗装板を作成しなくてもよいが、光輝材が入った塗料について、塗装板を作成してはじめて、その効果が確認できる光輝性塗料(例えば、平均粒子径約0.01〜0.05μm程度の微粒子酸化チタンを配合したもの等)や散乱因子が非常に少ない塗色についての調色は十分に行うことができなかった。
【0015】
本発明の目的は、明度が低い濃色塗料の調色を簡便に且つ精度よく行うことができる調色方法を提供することである。
【0016】
また、本発明の目的は、濃色塗料に光輝材を含有させた光輝感を有する塗料を調色する場合において、簡便に且つ精度よく調色でき、出荷合格レベルに到達するまでの調色回数を減らすことが可能な調色方法を提供することである。
【0017】
【課題を解決するための手段】
本発明者らは、上記目的を達成するため、濃色塗料の調色を行うにあたり、濃色塗料の一部に白エナメルを所定割合混合した薄め色塗料について測色し、薄め色塗料の色が合格となる濃色塗料を得ることによって簡便に且つ精度良く、目的とする濃色塗料を得ることができることを見出し本発明を完成するに至った。
【0018】
また、本発明者らは、濃色塗料に光輝材を含有させた光輝感を有する塗料を調色する場合において、前記目的を達成するため、着色顔料配合による色変化と光輝材配合による光輝感、色への影響を分離し、かつ光輝材を除いた濃色塗料について、濃色塗料の一部に白エナメルを所定配合比率で混合した薄め色塗料について測色し、薄め色塗料の色が合格となる濃色塗料を得、ついでこの濃色塗料に光輝材を配合することによって上記目的を達成することができることを見出し本発明を完成するに至った。
【0019】
すなわち本発明は、1.下記工程
(1)調色して色合わせをする基準である明度L値が40以下の濃色塗料と白エナメルとを所定配合比率で混合した明度L値が50以上の薄め色基準塗料について、薄め色基準液測色データ又は薄め色基準板を予め得ておく工程、及び
(2)濃色塗料を調色により得る工程であって、該濃色塗料を調色するに当り、調色途中の濃色塗料の一部と白エナメルとを上記所定配合比率で混合した薄め色塗料について、濃色塗料と白エナメルとの該所定配合比率を保持したまま、液測色データを上記薄め色基準液測色データに合せるように調色するか又は薄め色塗装板を上記薄め色基準板に合せるように調色を行い、薄め色塗料の色が合格となる濃色塗料の配合を得て、残りの調色途中の濃色塗料に対し配合補正を行い、調色された濃色塗料を得る工程、
を有することを特徴とする濃色塗料の調色方法(以下、「本発明調色方法(I)という」)を提供するものである。
【0020】
また本発明は、2.上記工程(2)における薄め色塗料の調色を色合わせ計算ロジックが作動するコンピュータを用いて行うことを特徴とする上記項1記載の調色方法を提供するものである。
【0021】
さらに本発明は、3.下記工程
(A)基準塗料配合が既知であり、調色して色合わせをする光輝性塗料の基準塗料配合から光輝材及び必要に応じて塗料添加剤を除いた明度L値が40以下の濃色塗料と白エナメルとを所定配合比率で混合した明度L値が50以上の薄め色基準塗料について、薄め色基準液測色データ又は薄め色基準板を予め得ておく工程、
(B)光輝材及び必要に応じて塗料添加剤を除いた濃色塗料を調色により得る工程であって、該濃色塗料を調色するに当り、調色途中の濃色塗料の一部と白エナメルとを上記所定配合比率で混合した希釈エナメル塗料について、濃色塗料と白エナメルとの上記所定配合比率を保持したまま、液測色データを上記基準となる薄め色基準液測色データに合せるように調色するか又は薄め色塗装板を薄め色基準板に合せるように調色を行い、薄め色塗料の色が合格となる濃色塗料の配合を得て、残りの調色途中の濃色塗料に対し配合補正を行い、調色された濃色塗料を得る工程、及び
(C)上記調色された濃色塗料に対して、光輝材及び必要に応じて塗料添加剤を混合する工程、
を有することを特徴とする光輝性塗料の調色方法(以下、「本発明調色方法(II)という」)を提供するものである。
【0022】
また本発明は、4.上記工程(B)における希釈エナメル塗料の調色を色合わせ計算ロジックが作動するコンピュータを用いて行うことを特徴とする上記項3記載の調色方法を提供するものである。
【0023】
さらに本発明は、5.上記工程(C)において、工程(B)で得た調色エナメル塗料に対して基準配合量の光輝材を加えて得た第一次調色塗料について塗装板を作成し、目的とする光輝性塗料の基準塗板との色一致性を判定し、色が合格であれば調色を終了し、色が不合格であれば更に光輝材量の調整による調色を行うことを特徴とする上記項3又は4記載の調色方法を提供するものである。
【0024】
また本発明は、6.上記工程(C)において、色一致性の判定を測色計及び/又は目視にて行うことを特徴とする上記項5記載の調色方法を提供するものである。
【0025】
以下、本発明の調色方法について詳細に説明する。
【0026】
【発明の実施の形態】
本発明調色方法(I)は、基準配合が既知である濃色塗料を調色する方法である。したがって、基準配合が既知である同一塗色について、繰り返して調色塗料を製造する場合に好適に使用できる方法である。
【0027】
濃色塗料を製造するための原料にロット間のばらつきが全くなければ、その基準配合どおりに配合すれば、目的とする色の塗料を得ることが可能であるが、現実には、ロット間のばらつきが存在し、単一種の顔料を含有する原色塗料においても着色力にある程度のばらつきがあり、色味などがばらつく場合もある。したがって、基準配合が既知である濃色塗料を調色する場合にも、基準配合どおりの配合で色一致性が合格となる場合はほとんどない。
【0028】
本発明調色方法(I)は、濃色塗料を調色するにあたり、濃色塗料の一部を白塗料によって希釈した塗料を基準色として調色することによって濃色のエナメル塗料の調色を行うものである。
【0029】
本発明調色方法(II)は、光輝性塗料を調色するにあたり、光輝材を含有する塗料として一度に調色するのではなく、光輝材抜きの濃色のエナメル塗料を調色した後、これに光輝材を加えて調色を行うものである。濃色のエナメル塗料は、上記本発明調色方法(I)におけると同様の方法にて行うものである。
【0030】
本発明調色方法(I)は、下記の工程(1)及び(2)を有する。
【0031】
工程(1)
工程(1)は、明度L値が40以下の濃色塗料について、白エナメルと所定配合比率で混合し、明度L値が50以上の薄め色基準塗料を作成し この塗料について、薄め色基準液測色データ又は薄め色基準板を予め得ておく工程である。本明細書において、「明度L値」は、JIS Z8729(1994)に規定されたL表色系におけるL値を意味する。上記薄め色基準液測色データ及び薄め色基準板は、目的とする濃色塗料製造の直前に得ることもできるが、薄め色基準液測色データ及び薄め色基準板は、繰り返し調色作業を行った結果に基づいて、より精度の高いものとしておくことが好ましい。
【0032】
本明細書において、「白エナメル」とは、隠蔽色の塗装板の色測定値において、JIS Z8729(1994)に規定されたL表色系におけるL値が85以上、好ましくは90以上、a値が5以下、好ましくは1以下、b値が5以下、好ましくは1.5以下であるエナメル塗料を意味するものとする。この白エナメルは、製造ロット間のバラツキが極めて小さいこと、例えば、JIS Z8729(1994)に規定されたL表色系におけるロット間の色差ΔEが1.0以内、さらには0.3以内であることが好適である。
【0033】
濃色塗料と白エナメルとの配合割合は、混合色である薄め色のL値が45以上、好ましくは50〜70となる限り特に制限されるものではない。通常、濃色塗料と白エナメルとの配合割合は、前者/後者の重量比で、5/95〜90/10、好ましくは10/90〜80/20の範囲内にあることが好適である。
【0034】
薄め色基準液測色データは、例えば、ガラスセルに薄め色基準塗料を入れ、液測色することによって得ることができる。薄め色基準板は、例えば、基材に隠蔽膜厚以上となるように薄め色基準塗料を塗装し、標準硬化条件で硬化させることによって得ることができる。
【0035】
工程(2)
工程(2)は、濃色塗料を調色により得る工程であって、該濃色塗料を調色するに当り、調色途中の濃色塗料の一部と白エナメルとを上記所定配合比率で混合した薄め色塗料について、濃色塗料と白エナメルとの該所定配合比率を保持したまま、液測色データを上記基準液測色データに合せるように調色するか又は薄め色塗装板を上記薄め色基準板に合せるように調色を行い、薄め色塗料の色が合格となる濃色塗料の配合を得る工程である。この調色にあたり、色合わせ計算ロジックが作動するコンピュータを用いてコンピュータ調色することもできるし、コンピュータ調色を用いずに、測色計及び/又は目視による調色を行なうこともできる。当然のことながら、コンピュータ調色と目視の両者を併用しても良い。色合わせ計算ロジックが作動するコンピュータや測色計による測定値により色が一致しているかを判断する場合、例えば、JIS Z8729(1994)に規定されたL表色系による△E値などによって管理することが出来る。
【0036】
本発明調色方法(II)は、下記の工程(A)、(B)及び(C)を有する。
【0037】
工程(A)
工程(A)は、基準塗料配合が既知であり、調色して色合わせをする光輝性塗料の基準塗料配合から光輝材及び必要に応じて塗料添加剤を除いた明度L値が40以下の濃色塗料と白エナメルとを所定配合比率で混合した明度L値が50以上の薄め色基準塗料について、薄め色基準液測色データ又は薄め色基準板を予め得ておく工程である。
【0038】
上記薄め色基準液測色データ及び薄め色基準板は、目的とする濃色塗料製造の直前に得ることもできるが、薄め色基準液測色データ及び薄め色基準板は、繰り返し調色作業を行った結果に基づいて、より精度の高いものとしておくことが好ましい。
【0039】
上記薄め色基準液測色データ及び薄め色基準板は、前記本発明調色方法(I)の工程(1)と同様にして得ることができる。
【0040】
工程(B)
工程(B)は、光輝材及び必要に応じて塗料添加剤を除いた濃色塗料を調色により得る工程であって、該濃色塗料を調色するに当り、調色途中の濃色塗料の一部と白エナメルとを上記所定配合比率で混合した希釈エナメル塗料について、濃色塗料と白エナメルとの上記所定配合比率を保持したまま、液測色データを上記基準となる薄め色基準液測色データに合せるように調色するか又は薄め色塗装板を薄め色基準板に合せるように調色を行い、薄め色塗料の色が合格となる濃色塗料を得る工程である。
【0041】
上記濃色塗料は、前記本発明調色方法(I)の工程(2)と同様にして得ることができる。
【0042】
工程(C)
工程(C)は、上記工程(B)にて調色された濃色塗料に対して、光輝材及び必要に応じて塗料添加剤を混合する工程である。工程(C)において、光輝材の基準量を一度に加えても良いし、少し減量して加え、光輝感を見ながら光輝材を追加していくこともできる。光輝材の光輝感のバラツキは光輝材を製造する技術の向上などによって小さくなってきており、バラツキの大きいものを除いては、光輝材の規定量を一度に加えても不合格になることはなくなってきていると考えられる。
【0043】
調色エナメル塗料に対して光輝材などを配合した第一次調色塗料について、塗装板を作成し、目的とする光輝性塗料の基準塗板との色一致性を判定することができる。この判定において、色一致性が合格であれば調色を終了し、色一致性が不合格であれば更に調色を行う。この色一致性の判定は、例えば、測色計を用いて行うこともできるし、目視によって行うこともでき、また、両者を併用してもよい。測色計としては、多角度にて測色を行うことができる多角度測色計が好適である。測色計によって、色一致性の判断を行う場合、多角度、例えば2〜5水準程度の受光角度において、例えば、JIS Z8729(1994)に規定されたL表色系によるΔE値が一定範囲内にあるか否かで判断することができる。上記受光角度とは、塗膜に一定の入射角度で光照射したときの鏡面反射軸と受光軸とがなす角度を意味する。受光角度3水準で測定を行う場合には、例えば、上記受光角度が15〜30度、35〜60度及び75〜110度の各角度範囲のうちの各1ずつであることが目視による色の判断との対応がとれやすいことから好適である。
【0044】
調色エナメル塗料に対して光輝材などを配合した第一次調色塗料の色が合格か不合格かを判定するのに塗装板を作成せず、第一次調色塗料である生塗料そのもの色を判定する液調色によることもできる。
【0045】
光輝性塗料の液調色は、基準塗板に合せて調色する方法に比較して現時点では精度面で問題があり、光輝性塗料の調色において高い精度が求められる場合には、工程(C)における色一致性の判定は、光輝性塗料の塗装板について基準塗板との色一致性により行うことが好適である。
【0046】
上記色一致性の判定で合格であれば調色を終了し、不合格であれば、さらに光輝材量の調整による調色を行うことによって目的とする光輝性塗料を得ることができる。
【0047】
【実施例】
以下、実施例、比較例などを示し、本発明をさらに詳細に説明する。
【0048】
比較例1 赤マイカ色塗料(RM塗料)の調色 (比較用)
下記表1に示すように、少量配合原色エナメル量を控えた初回配合(基準配合に対し、光輝材100%、多量配合原色エナメル90%、少量配合原色エナメル50%の配合)から、RM塗料基準板を基準として、コンピュータカラーマッチング装置(関西ペイント(株)製、商品名「アレスマッチ」)を用いて調色塗板の塗色を測定し配合計算を行い、補正配合(追加量)を求めた。この補正配合計算を3回行い調色塗料を得た。3回配合調整後の色差ΔEは、1.22であり、目視評価結果はCであった。ここで、少量配合原色エナメルは、黒色A及び赤色Cの各原色エナメルであり、多量配合原色エナメルは、赤色A及び赤色Bの各原色エナメルであった。
【0049】
【表1】

Figure 0004426208
【0050】
実施例1 赤マイカ色塗料(RM塗料)の調色 (本発明方法)
下記表2に示すように、光輝材を配合せず、少量配合原色エナメル量を控えた初回配合(基準配合に対し多量配合原色エナメル90%及び少量配合原色エナメル50%)から、薄め色基準板を基準として、コンピュータカラーマッチング装置(関西ペイント(株)製、商品名「アレスマッチ」)を用いて薄め色調色塗板の塗色を測定して補正配合(追加量)計算を行い、光輝材抜きの調色塗料を得た。ここで、少量配合原色エナメルは、黒色A及び赤色Cの各原色エナメルであり、多量配合原色エナメルは、赤色A及び赤色Bの各原色エナメルであった。薄め色基準板は、目標とするRM塗料から光輝材を抜いた配合の塗料に対し、61.33%量の薄め用白原色エナメルを配合した塗料を塗装した基準板である。薄め色基準板を基準として配合調整するに際しては、薄め色基準板作成時における薄め率と同じ比率、すなわち調色塗料に対し61.33%量の薄め用白原色エナメルを配合した塗料について薄め色基準板との色差ΔEを測定した。
【0051】
上記補正配合(追加量)計算を2回行い、1回目及び2回目の配合調整後の光輝材抜きの調色塗料に対し、基準配合量の光輝材を配合した塗料について塗装板を作成しRM塗料標準板との色差ΔEを測定するとともに目視にて色一致性を評価した。2回配合調整後の光輝材を配合した塗料の色差ΔEは、0.27であり、目視評価結果はAであった。また、RM塗料から光輝材を抜いた塗料の塗装板の明度L値は16.8であり、薄め色基準板の明度L値は53.1であった。
【0052】
【表2】
Figure 0004426208
【0053】
比較例2 ガンメタリック色塗料(GM塗料)の調色 (比較用)
下記表3に示すように、少量配合原色エナメル量を控えた初回配合(光輝材100%、多量配合原色エナメル90%、少量配合原色エナメル50%の配合)から、GM塗料基準板を基準として、コンピュータカラーマッチング装置(関西ペイント(株)製、商品名「アレスマッチ」)を用いて薄め色調色塗板の塗色を測定して補正配合(追加量)を求めた。この補正配合計算を3回行い調色塗料を得た。3回配合調整後の色差ΔEは、1.24であり、目視評価結果はCであった。ここで、少量配合原色エナメルは、赤色Dの原色エナメルであり、多量配合原色エナメルは、黒色B、青色A及び紫色Aの各原色エナメルであった。また、配向調整剤の初回配合量も50%とした。
【0054】
【表3】
Figure 0004426208
【0055】
実施例2 ガンメタリック色塗料(GM塗料)の調色 (本発明方法)
下記表4に示すように、光輝材を配合せず、少量配合原色量を控えた初回配合(多量配合原色90%、少量配合原色50%の配合)から、薄め色基準板を基準として、カラーマッチング装置(前記)を用いて薄め色調色塗板の塗色を測定して補正配合(追加量)計算を行い、光輝材抜きの調色塗料を得た。ここで、少量配合原色エナメルは、赤色Dの原色エナメルであり、多量配合原色エナメルは、黒色B、青色A及び紫色Aの各原色エナメルである。また、配向調整剤の初回配合量も50%とした。薄め色基準板は、目標とするGM塗料から光輝材を抜いた配合の塗料に対し、130%量の薄め用白原色エナメルを配合した塗料を塗装した基準板である。薄め色基準板を基準として配合調整するに際しては、薄め色基準板作成時における薄め率と同じ比率、すなわち調色塗料に対し130%量の白原色エナメルを配合した調色塗料の調色塗板について薄め色基準板との色差ΔEを測定した。
【0056】
上記配合調整を3回行い、1回目、2回目及び3回目の配合調整後の光輝材抜きの各調色塗料に対し、基準配合量の光輝材を配合した塗料について塗装板を作成しGM塗料基準板との色差ΔEを測定するとともに目視にて色一致性を評価した。3回目の配合調整後の光輝材を配合した塗料の色差ΔEは、0.42であり、目視評価結果はAであった。また、GM塗料から光輝材を抜いた塗料の塗装板の明度L値は7.4であり、薄め色基準板の明度L値は51.3であった。
【0057】
【表4】
Figure 0004426208
【0058】
実施例3 赤マイカ色塗料(RM塗料)の調色 (本発明方法)
前記実施例1において、薄め用白原色エナメルによる薄め率を55%(水準1)、115%(水準2)及び165%(水準3)の3水準とし、各薄め率での薄め色基準板を作成する以外は、実施例1に準じて調色を行った。調色の経過及び結果のデータを下記表5〜7に示す。
【0059】
薄め率55%(実施例3−1)では、3回配合調整後の光輝材を配合した塗料の色差ΔEは0.22であり、目視評価結果はAであった。薄め率115%(実施例3−2)では、3回配合調整後の光輝材を配合した塗料の色差ΔEは0.76であり、目視評価結果はBであった。また、薄め率165%(実施例3−3)では、3回配合調整後の光輝材を配合した塗料の色差ΔEは0.79であり、目視評価結果はBであった。3水準の薄め率のうち、薄め率55%のものが最も色一致性が高い結果であった。また、RM塗料から光輝材を抜いた塗料の塗装板の明度L値は16.8であり、薄め率55%の薄め色基準板の明度L値は50.3、薄め率115%の薄め色基準板の明度L値は58.0、薄め率165%の薄め色基準板の明度L値は65.8であった。
【0060】
【表5】
Figure 0004426208
【0061】
【表6】
Figure 0004426208
【0062】
【表7】
Figure 0004426208
【0063】
比較例3 青色塗料(BL塗料)の調色 (比較用)
青色塗料(BL塗料)の調色を行うにあたり、青色塗料基準液測色データ及び青色塗料基準板を予め準備しておく。下記表8に示すように、少量配合原色エナメル量を控えた初回配合(基準配合に対し、光輝材100%、多量配合原色エナメル90%、少量配合原色エナメル50%の配合)から、青色塗料基準液の色データを基準として、コンピュータカラーマッチング装置(関西ペイント(株)製、商品名「アレスマッチ」)を用いて液測色し配合計算を行い、補正配合(追加量)を求めた。この補正配合計算を3回行い調色塗料を得た。3回配合調整後の調色塗料は、青色塗料基準液測色データとの色差ΔEが0.92であった。また、青色塗料基準板との色差ΔEが1.33であり、青色塗料基準板との目視評価結果はBであった。ここで、少量配合原色エナメルは、黒色及び紫色の各原色エナメルであり、多量配合原色エナメルは、白色及び青色の各原色エナメルである。
【0064】
【表8】
Figure 0004426208
【0065】
実施例4 青色塗料(BL塗料)の調色 (本発明方法)
青色塗料(BL塗料)の調色を行うにあたり、青色塗料基準板及び青色塗料の薄め色基準液測色データを予め準備しておく。下記表9に示すように、少量配合原色エナメル量を控えた初回配合(基準配合に対し、光輝材100%、多量配合原色エナメル90%、少量配合原色エナメル50%を配合し、該原色配合合計に対し、薄め用白原色エナメルを50%配合)から、青色塗料の薄め色基準液の色データを基準として、コンピュータカラーマッチング装置(関西ペイント(株)製、商品名「アレスマッチ」)を用いて測定し配合計算を行い、補正配合(追加量)を求めた。薄め色基準液測色データを基準として補正配合を得るに際しては、薄め色基準液の作成時における薄め率と同じ比率、すなわち調色塗料に対し50%の薄め用白原色エナメルを配合した塗料について薄め色基準液測色データとの色差ΔEを測定した。この補正配合計算を3回行い調色塗料を得た。3回配合調整後の薄め色調色塗料は、青色塗料の薄め色基準液測色データとの色差ΔEが0.23であった。また、薄め用の白原色エナメル抜きの調色塗料は、青色塗料基準板との色差ΔEが0.39であり、青色塗料基準板との目視評価結果はAであった。ここで、少量配合原色エナメルは、黒色及び紫色の各原色エナメルであり、多量配合原色エナメルは、白色及び青色の各原色エナメルである。また、BL塗料の塗装板の明度L値は26.1であり、薄め色基準板の明度L値は53.4であった。
【0066】
【表9】
Figure 0004426208
【0067】
上記比較例1〜3及び実施例1〜4及び前記表1〜表9における塗装板の目視評価は下記基準に基いて行った。
【0068】
目視評価:各光輝性塗料の標準板と塗装板とを目視により観察し、下記基準により評価した。
A:基準板と差が認められず良好。
B:基準板と比較してほんの僅かに差が認められるが良好。
C:基準板と比較して差が認められるが、限度内であり出荷合格範囲である。
D:基準板と比較して差が限度を超えるものであり、出荷不合格である。
【0069】
【発明の効果】
本発明方法は、濃色塗料の調色において、従来方法に比べ感度よく調色を行うことができ、調色精度を上げることができる。従来方法では、色合わせが困難であった色域でも精度よく調色が可能である。
【0070】
濃色のエナメルに光輝材が配合された光輝性塗料の調色を行う場合には、光輝材を除くエナメル塗料の調色をまず行うので、光輝性顔料を配合した状態で原色塗料などの着色剤(光輝材を除く)の配合量を変化させる従来方法に比較して調色が容易で、かつ精度よく調色できる。[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a method for easily and accurately toning a dark paint, and a toning method that can easily and accurately perform toning of a glittering paint using the toning of a dark paint.
[0002]
[Prior art]
Conventionally, with regard to toning of paints, in Japanese Patent Laid-Open No. 63-153777, color data representing the hue, saturation and brightness of a selected color to be toned using a portable color meter is stored, and the color meter A plurality of paint formulations that can be used are stored in the computer, and the hue, saturation, and luminance of each paint specified by the stored available color formula are represented. Color data is stored in the computer and the closest match is found by comparing the color data of the selected color received from the color meter with the stored color data representing each of the stored available paint formulations. Selecting the stored paint formulation represented by the color data found as the closest match, thereby matching the color match for the selected color A method and apparatus for performing has been proposed (see Patent Document 1).
[0003]
However, the colorimetric data used for toning has a problem that the colorimetric sensitivity is poor for a color having a small scattering factor, that is, a dark color, due to the characteristics of the spectrophotometer. For this reason, it is difficult for the dark color paint to achieve the toning level, and the number of toning tends to increase.
[0004]
In recent years, the paint color of automobiles and the like has been increasing with a glittering paint color in which aluminum powder and glitter mica powder are blended from the viewpoint of diversification of personal preference and improvement of cosmetics. In the case of performing the color matching of this glittering coating color, the color matching method described in the above Japanese Patent Application Laid-Open No. 63-153777 still has insufficient color matching accuracy.
[0005]
Japanese Patent Application Laid-Open No. 10-310727 discloses a metallic material for obtaining a blending ratio of a coloring material and a brilliant material or a blending amount of the brilliant material that matches a target color of a metallic pearl-based paint blended with a brilliant material or a coloring material and a brilliant material In the toning method of the pearl paint, a computer is prepared by measuring the spectral reflectance of a plurality of coated plate samples in which the blending amount of the glittering material to be used or the blending ratio of the coloring material and the glittering material is changed with a variable angle spectrophotometer in advance. Is stored in the memory, and the reproducible spectral reflectance is predicted and calculated while taking into account the change in the declination spectral reflectance that is caused by changing the amount of the brightening material added when toning using this. A method for obtaining a blending amount of a material or an appropriate blending ratio of a coloring material and a bright material has been proposed (see Patent Document 2).
[0006]
However, in this method, it is necessary to use at least about 5 to 6 levels of a coated plate sample in which the blending amount of the glittering material or the blending ratio of the coloring material and the glittering material is changed for one color material. Is necessary, and the calculation algorithm is complicated, which increases the cost of the device used.
[0007]
Japanese Patent Application Laid-Open No. 2001-221690 discloses (A) a colorimeter, (B) a micro brightness meter, (C) a plurality of paint blends, color data corresponding to each paint blend, and micro brightness. Sensation data, color characteristic data of a plurality of primary color paints and micro glitter characteristic data are registered, and a paint computer comprising the paint composition and a computer on which color matching calculation logic using each data operates A toning method that can be applied to a paint having a glittering feeling using a toning device is described (see Patent Document 3).
[0008]
However, it takes a lot of labor and cost to register the color data and micro glitter data corresponding to each paint composition used in this method, and the color characteristics data and micro glitter characteristics data of multiple primary color paints. However, since it is complicated, the cost of the apparatus to be used becomes a factor.
[0009]
Furthermore, Japanese Patent Application Laid-Open No. 2001-50891 discloses a method for measuring a color liquid filled in a cell by discharging and circulating the color liquid to a surface including a measurement site of the cell. A liquid colorimetry method is described in which colorimetry is performed while continuously updating the colored liquid at the measurement site (see Patent Document 4).
[0010]
However, it takes a lot of labor and cost to register color data corresponding to the composition of each glitter paint used in this method and color characteristic data of a plurality of primary color paints. On the other hand, since it is necessary to discharge and circulate the coloring liquid, it becomes a factor of high cost of the apparatus used.
[0011]
Prior art document information related to the invention of this application includes the following.
[0012]
[Patent Document 1]
Japanese Patent Laid-Open No. Sho 63-153777
[Patent Document 2]
Japanese Patent Laid-Open No. 10-310727
[Patent Document 3]
JP 2001-221690 A
[Patent Document 4]
JP 2001-50891 A
[0013]
[Problems to be solved by the invention]
In any of the methods described in JP-A-10-310727 and JP-A-2001-221690, when toning a paint having a glittering feeling, even in repeated toning where the basic composition of the paint is known, Toning while grasping the optical characteristics of the coating film containing the glitter material, and because the glitter is included as a factor in addition to the color, the number of toning times until the toning is complicated and the passing level is reached There was a problem that the number of man-hours for creating a painted plate for toning and the like increased.
[0014]
Further, in the method described in Japanese Patent Application Laid-Open No. 2001-50891, it is not necessary to create a paint plate for toning the glitter paint, but a paint plate is created for the paint containing the glitter material. For the first time, glossy paint (for example, blended with fine titanium oxide with an average particle size of about 0.01 to 0.05 μm) that can confirm the effect and color matching for coating colors with very little scattering factor are sufficient Could not be done.
[0015]
An object of the present invention is to provide a toning method capable of easily and accurately toning a dark paint having low lightness.
[0016]
In addition, the object of the present invention is to adjust the color tone easily and accurately when toning a paint having a glittering feeling in which a bright color material is contained in a dark color paint, and the number of toning times until reaching the level of passing the shipment. It is to provide a toning method capable of reducing the color tone.
[0017]
[Means for Solving the Problems]
In order to achieve the above-mentioned object, the present inventors measured the color of a light-colored paint in which a white enamel is mixed in a predetermined proportion in a part of the dark-colored paint when toning the dark-colored paint, and the color of the light-colored paint The inventors have found that the intended dark color paint can be obtained easily and accurately by obtaining a dark color paint that passes the above, and the present invention has been completed.
[0018]
Further, the present inventors have achieved a color change by blending a color pigment and a glitter feeling by blending a glittering material in order to achieve the above object when toning a paint having a glittering feeling in which a glittering material is contained in a dark paint. Measure the color of the light-colored paint, which is a mixture of the dark-colored paint and white enamel mixed at a specified blending ratio for the dark-colored paint that has the effect on color and excludes the glitter material. The inventors have found that the above object can be achieved by obtaining an acceptable dark paint and then blending a bright material with the dark paint, thereby completing the present invention.
[0019]
  That is, the present invention provides: The following process
(1)Lightness L, the standard for color matching by color matching*Lightness L in which dark paint with a value of 40 or less and white enamel are mixed at a predetermined blending ratio*A step of obtaining light color reference liquid color measurement data or light color reference plate in advance for a light color reference paint having a value of 50 or more; and
(2)A process for obtaining a dark color paint by toning, and for toning the dark color paint, a light color paint in which a part of the dark color paint in the middle of toning and white enamel are mixed in the above-mentioned predetermined blending ratio The liquid color measurement data is adjusted to match the light color reference liquid color measurement data while maintaining the predetermined blending ratio of the dark paint and the white enamel, or the light color coating plate is adjusted to the light color reference plate. The color of the light-colored paint is passed.The blend of dark paint was obtained, the blending correction was performed on the remaining dark paint in the middle of toning, and the toning was performedA step of obtaining a dark paint,
The present invention provides a toning method for dark paint (hereinafter referred to as “the toning method (I) of the present invention”).
[0020]
The present invention also provides 2. The toning method according to item 1, wherein the toning of the light-colored paint in the step (2) is performed using a computer in which a color matching calculation logic operates.
[0021]
  Furthermore, the present invention provides 3. The following process
(A) The lightness L obtained by removing the glittering material and, if necessary, the paint additive from the reference paint composition of the glittering paint for which the reference paint composition is known and toning and color matching*Lightness L in which dark paint with a value of 40 or less and white enamel are mixed at a predetermined blending ratio*A step of previously obtaining a light color reference liquid color measurement data or a light color reference plate for a light color reference paint having a value of 50 or more;
(B) A step of obtaining a dark color paint from which a glittering material and, if necessary, a paint additive are removed by toning, and when toning the dark color paint, a part of the dark color paint in the middle of toning For diluted enamel paint in which white enamel and white enamel are mixed at the predetermined blending ratio, the liquid color measurement data is used as the standard for the liquid color measurement data while maintaining the predetermined blend ratio of the dark paint and the white enamel. Tone color is adjusted to match the light color paint plate or the light color reference plate, and the color of the light color paint passes.The blend of dark paint was obtained, the blending correction was performed on the remaining dark paint in the middle of toning, and the toning was performedObtaining a dark paint; and
(C) a step of mixing a bright material and, if necessary, a paint additive with the toned dark paint,
The present invention provides a color-matching method for glittering paints (hereinafter referred to as “the color-matching method (II) of the present invention”).
[0022]
The present invention also provides 4. The toning method according to item 3, wherein the toning of the diluted enamel paint in the step (B) is performed using a computer in which a color matching calculation logic operates.
[0023]
Furthermore, the present invention relates to 5. In the step (C), a coated plate is prepared for the primary toning paint obtained by adding a reference blending amount of the glitter material to the toning enamel paint obtained in the step (B), and the desired glitter The color matching with the reference coating plate of the paint is determined, and if the color is acceptable, the toning is terminated, and if the color is unacceptable, the toning is performed by adjusting the amount of the glittering material. The toning method described in 3 or 4 is provided.
[0024]
The present invention also relates to 6. In the step (C), the color matching determination is performed by a colorimeter and / or visual observation.
[0025]
Hereinafter, the toning method of the present invention will be described in detail.
[0026]
DETAILED DESCRIPTION OF THE INVENTION
The toning method (I) of the present invention is a method for toning a dark paint having a known reference composition. Therefore, it is a method that can be suitably used in the case of repeatedly producing a toned paint for the same paint color whose reference blend is known.
[0027]
If there is no lot-to-lot variation in the raw material for producing dark paint, it is possible to obtain the desired color paint if blended according to the standard blend, There are variations, and even in the primary color paint containing a single type of pigment, there is some variation in coloring power, and the color may vary. Therefore, even when toning a dark-colored paint whose reference blend is known, there is almost no case where the color matching is acceptable with the blend according to the reference blend.
[0028]
In the toning method (I) of the present invention, when toning a dark paint, the toning of the dark enamel paint is performed by toning a paint obtained by diluting a part of the dark paint with a white paint as a reference color. Is what you do.
[0029]
The toning method (II) of the present invention is not toning at once as a paint containing a glittering material when toning a glittering paint, but after toning a dark enamel paint without a glittering material, Toning is performed by adding a bright material to this. The dark-colored enamel coating is performed by the same method as in the above-described toning method (I) of the present invention.
[0030]
The toning method (I) of the present invention includes the following steps (1) and (2).
[0031]
Process (1)
Step (1) is lightness L*For dark paints with a value of 40 or less, mix with white enamel at a specified blending ratio and lightness L*In this process, a light color reference paint having a value of 50 or more is prepared, and light color reference liquid color measurement data or a light color reference plate is previously obtained for the paint. In this specification, “lightness L*Value ”is the L specified in JIS Z8729 (1994).*a*b*L in the color system*Mean value. The light color reference liquid color measurement data and the light color reference board can be obtained immediately before the production of the intended dark color paint, but the light color reference liquid color measurement data and the light color reference board are used for repeated toning operations. It is preferable that the accuracy is higher based on the result.
[0032]
In the present specification, “white enamel” refers to L defined in JIS Z8729 (1994) in the color measurement value of a concealed painted plate.*a*b*L in the color system*A value of 85 or more, preferably 90 or more, a*A value of 5 or less, preferably 1 or less, b*It shall mean an enamel paint having a value of 5 or less, preferably 1.5 or less. This white enamel has extremely small variations between production lots, for example, L defined in JIS Z8729 (1994).*a*b*Color difference ΔE between lots in the color system*Is preferably within 1.0, more preferably within 0.3.
[0033]
The blending ratio of dark paint and white enamel is a light color L*The value is not particularly limited as long as the value is 45 or more, preferably 50 to 70. Usually, the blending ratio of the dark color paint and the white enamel is 5/95 to 90/10, preferably 10/90 to 80/20 in terms of the former / latter weight ratio.
[0034]
The light color reference liquid color measurement data can be obtained, for example, by putting a light color reference paint in a glass cell and performing liquid color measurement. The light color reference plate can be obtained, for example, by applying a light color reference paint on the base material so as to have a thickness equal to or greater than the concealed film thickness and curing it under standard curing conditions.
[0035]
Process (2)
Step (2) is a step of obtaining a dark paint by toning, and when toning the dark paint, a part of the dark paint in the middle of the toning and white enamel are mixed at the predetermined blending ratio. For the mixed light color paint, the liquid color measurement data is adjusted to match the reference liquid color measurement data while maintaining the predetermined blending ratio of the dark color paint and the white enamel, or the light color coating plate is formed as described above. In this step, the color is adjusted so as to match the light color reference plate, and a dark color paint composition is obtained in which the color of the light color paint is acceptable. In this toning, computer toning can be performed using a computer in which color matching calculation logic operates, and color toning by colorimeter and / or visual observation can be performed without using computer toning. Naturally, both computer toning and visual observation may be used in combination. When it is determined whether the colors match based on the values measured by a computer or a colorimeter in which the color matching calculation logic operates, for example, L defined in JIS Z8729 (1994)*a*b*△ E by color system*It can be managed by value.
[0036]
The toning method (II) of the present invention includes the following steps (A), (B) and (C).
[0037]
Step (A)
In the step (A), the lightness L obtained by removing the glittering material and, if necessary, the paint additive from the reference paint composition of the glittering paint that is toned and color-matched is known.*Lightness L in which dark paint with a value of 40 or less and white enamel are mixed at a predetermined blending ratio*This is a step of obtaining light color reference liquid color measurement data or light color reference plate in advance for a light color reference paint having a value of 50 or more.
[0038]
The light color reference liquid color measurement data and the light color reference board can be obtained immediately before the production of the intended dark color paint, but the light color reference liquid color measurement data and the light color reference board are used for repeated toning operations. It is preferable that the accuracy is higher based on the result.
[0039]
The light color reference liquid color measurement data and the light color reference plate can be obtained in the same manner as in the step (1) of the toning method (I) of the present invention.
[0040]
Process (B)
The step (B) is a step of obtaining a dark color paint from which a glittering material and, if necessary, a paint additive are removed by toning, and when toning the dark color paint, The diluted color enamel paint obtained by mixing a part of the white enamel and the white enamel at the predetermined blending ratio, while maintaining the predetermined blending ratio of the dark color paint and the white enamel, the liquid color measurement data becomes the standard for the light color reference liquid. In this step, the color is adjusted so as to match the colorimetric data, or the light-colored paint plate is adjusted to match the light-color reference plate, and a dark-colored paint that passes the light-colored paint color is obtained.
[0041]
The dark paint can be obtained in the same manner as in step (2) of the toning method (I) of the present invention.
[0042]
Process (C)
The step (C) is a step of mixing the bright material and, if necessary, a paint additive with the dark paint toned in the step (B). In the step (C), the reference amount of the glitter material may be added at a time, or the amount may be slightly reduced, and the glitter material may be added while observing the glitter feeling. The variation in brightness of glittering materials has been reduced due to improvements in technology for manufacturing glittering materials, and except for those with large variations, it is not acceptable to add a specified amount of glittering materials at once. It is thought that it has disappeared.
[0043]
With respect to the primary toning paint in which a glittering material or the like is blended with the toning enamel paint, a painted plate can be prepared, and the color consistency with the reference coating plate of the intended glitter paint can be determined. In this determination, if the color matching is acceptable, the toning is terminated, and if the color matching is unacceptable, further toning is performed. This determination of color consistency can be performed, for example, using a colorimeter, can be performed visually, or both can be used together. As the colorimeter, a multiangle colorimeter that can perform color measurement at multiple angles is suitable. When color matching is determined by a colorimeter, at a light reception angle of about 2 to 5 levels, for example, L defined in JIS Z8729 (1994).*a*b*ΔE by color system*It can be determined by whether the value is within a certain range. The light receiving angle means an angle formed between the specular reflection axis and the light receiving axis when the coating film is irradiated with light at a constant incident angle. When measuring at a light reception angle of 3 levels, for example, the light reception angle is one of each of the angle ranges of 15 to 30 degrees, 35 to 60 degrees, and 75 to 110 degrees. This is preferable because it can be easily handled with judgment.
[0044]
Raw paint itself, which is the primary toning paint, is not used to determine whether the color of the primary toning paint that contains a glittering material or the like to the toning enamel paint is acceptable or not. It can also be based on liquid toning to determine color.
[0045]
The liquid toning of the glitter paint has a problem in accuracy at present compared with the method of toning according to the reference coating plate. When high precision is required in the toning of the glitter paint, the process (C It is preferable to determine the color consistency in (2) based on the color consistency of the glossy paint coated plate with the reference coated plate.
[0046]
If the color matching determination is acceptable, the toning is terminated, and if it is unacceptable, the target glittering paint can be obtained by performing toning by adjusting the amount of the glittering material.
[0047]
【Example】
Hereinafter, the present invention will be described in more detail with reference to Examples and Comparative Examples.
[0048]
Comparative Example 1 Toning of red mica color paint (RM paint) (for comparison)
As shown in Table 1 below, from the initial formulation (a blend of 100% glitter material, 90% mixed primary color enamel, 50% small mixed primary color enamel with respect to the standard formulation) with a low primary mixed color enamel amount, the RM paint standard Using the board as a reference, the color of the toned coating board was measured using a computer color matching device (trade name “Alesmatch” manufactured by Kansai Paint Co., Ltd.), and the blending calculation was performed to obtain the corrected blending (additional amount). . This correction blending calculation was performed three times to obtain a toning paint. Color difference ΔE after blending adjustment 3 times*Was 1.22, and the visual evaluation result was C. Here, the small amount blended primary color enamel is the primary color enamel of black A and red C, and the large amount blended primary color enamel is the primary color enamel of red A and red B.
[0049]
[Table 1]
Figure 0004426208
[0050]
Example 1 Toning of Red Mica Color Paint (RM Paint) (Method of the Present Invention)
As shown in Table 2 below, from the initial blend (90% large blend primary color enamel and 50% small blend primary enamel with respect to the standard blend) with no luster added and a small blend primary color enamel amount, Using as a standard, a computer color matching device (Kansai Paint Co., Ltd., trade name “Alesmatch”) is used to measure the paint color of the light-colored toning plate, calculate the correction composition (additional amount), and remove the glittering material. Toning paint was obtained. Here, the small amount blended primary color enamel is the primary color enamel of black A and red C, and the large amount blended primary color enamel is the primary color enamel of red A and red B. The light color reference plate is a reference plate in which a paint containing 61.33% of the white primary color enamel for thinning is applied to the paint obtained by removing the glitter material from the target RM paint. When adjusting the formulation based on the lighter color reference plate, the lighter color is applied to the paint blended with the same ratio as the thinning rate at the time of making the lighter color reference plate, that is, 61.33% of the white primary color enamel for lightening Color difference ΔE with reference plate*Was measured.
[0051]
The above correction blending (additional amount) calculation is performed twice, and a paint plate is created for the paint blended with the reference blending amount of the glitter material for the toning paint without the glittering material after the first and second blending adjustments, and RM is created. Color difference ΔE with paint standard plate*And color consistency was evaluated visually. Color difference ΔE of paint blended with glittering material after blending adjustment twice*Was 0.27, and the visual evaluation result was A. In addition, the lightness L of the paint plate of the paint obtained by removing the glitter material from the RM paint*The value is 16.8, the lightness L of the lighter color reference plate*The value was 53.1.
[0052]
[Table 2]
Figure 0004426208
[0053]
Comparative Example 2 Toning of gunmetal paint (GM paint) (for comparison)
As shown in Table 3 below, from the initial formulation (100% brilliant material, 90% high-mixed primary color enamel, 50% low-mixed primary color enamel) based on the GM paint reference plate, with a small amount of primary color enamel in mind. Using a computer color matching device (manufactured by Kansai Paint Co., Ltd., trade name “Alesmatch”), the coating color of the light-colored toning coating plate was measured to obtain a correction formulation (additional amount). This correction blending calculation was performed three times to obtain a toning paint. The color difference ΔE after the third blending adjustment was 1.24, and the visual evaluation result was C. Here, the small amount blended primary color enamel was the primary color enamel of red D, and the large amount blended primary color enamel was each of the primary colors enamel of black B, blue A and purple A. The initial blending amount of the orientation adjusting agent was also 50%.
[0054]
[Table 3]
Figure 0004426208
[0055]
Example 2 Toning of Gunmetal Color Paint (GM Paint) (Method of the Present Invention)
As shown in Table 4 below, from the initial blending (mixing of 90% large blending primary color and 50% blending primary color) with no luster added, and with a lighter color reference plate as the standard, Using the matching device (described above), the coating color of the light-colored toning coating plate was measured and corrected blending (addition amount) was calculated to obtain a toning paint without a glittering material. Here, the small amount blended primary color enamel is the primary color enamel of red D, and the large amount blended primary color enamel is each of the primary colors enamel of black B, blue A and purple A. The initial blending amount of the orientation adjusting agent was also 50%. The light color reference plate is a reference plate in which a paint containing 130% of the white primary color enamel for thinning is applied to the paint obtained by removing the glitter material from the target GM paint. When adjusting the blend with the lighter color reference plate as a reference, the toning coating plate of the toning paint in which the same ratio as the thinning ratio at the time of making the lighter color reference plate, that is, 130% of the white primary color enamel is blended with the toning paint Color difference ΔE with lighter color reference plate*Was measured.
[0056]
The above blending adjustment is performed three times, and a paint plate is prepared for the paint blended with the reference blending amount of the glittering material for each toning paint without the glittering material after the first, second and third blending adjustments, and a GM paint is prepared. Color difference ΔE with reference plate*And color consistency was evaluated visually. Color difference ΔE of paint blended with glitter material after third blending adjustment*Was 0.42 and the visual evaluation result was A. In addition, the lightness L of the paint plate of the paint obtained by removing the glitter material from the GM paint*The value is 7.4 and the lightness L of the lighter color reference plate*The value was 51.3.
[0057]
[Table 4]
Figure 0004426208
[0058]
Example 3 Toning of Red Mica Color Paint (RM Paint) (Method of the Present Invention)
In Example 1, the thinning ratio by the white primary color enamel for thinning is set to three levels of 55% (level 1), 115% (level 2), and 165% (level 3), and the thin color reference plate at each thinning ratio is used. Toning was performed according to Example 1 except that it was created. The process of toning and the resulting data are shown in Tables 5-7 below.
[0059]
At a thinning rate of 55% (Example 3-1), the color difference ΔE of the paint blended with the glittering material after blending adjustment three times.*0.22 and the visual evaluation result was A. At a thinning rate of 115% (Example 3-2), the color difference ΔE of the paint blended with the glitter material after blending adjustment three times.*Was 0.76, and the visual evaluation result was B. In addition, at a thinning ratio of 165% (Example 3-3), the color difference ΔE of the paint blended with the glittering material after blending adjustment three times.*Was 0.79, and the visual evaluation result was B. Of the three levels of thinning rate, those with a thinning rate of 55% gave the highest color matching. In addition, the lightness L of the paint plate of the paint obtained by removing the glitter material from the RM paint*The value is 16.8, and the lightness L of the thin color reference plate with a thinning ratio of 55%.*Lightness L of light color reference plate with a value of 50.3 and a thinning rate of 115%*Lightness L of light color reference plate with a value of 58.0 and a thinning rate of 165%*The value was 65.8.
[0060]
[Table 5]
Figure 0004426208
[0061]
[Table 6]
Figure 0004426208
[0062]
[Table 7]
Figure 0004426208
[0063]
Comparative Example 3 Toning of blue paint (BL paint) (for comparison)
In order to adjust the color of the blue paint (BL paint), blue paint reference liquid color measurement data and a blue paint reference plate are prepared in advance. As shown in Table 8 below, from the initial formulation (a blend of 100% glitter material, 90% blended primary color enamel, 50% blended primary color enamel with respect to the standard blend), with a small amount of blended primary color enamel. Using the liquid color data as a reference, liquid color was measured using a computer color matching device (trade name “Alesmatch” manufactured by Kansai Paint Co., Ltd.), and a blending calculation was performed to obtain a corrected blending (additional amount). This correction blending calculation was performed three times to obtain a toning paint. The toning paint after blending adjustment 3 times is the color difference ΔE from the blue paint reference liquid color measurement data*Was 0.92. Also, the color difference ΔE from the blue paint reference plate*Was 1.33 and the result of visual evaluation with the blue paint reference plate was B. Here, the small amount blended primary color enamel is each of black and purple primary color enamels, and the large amount blended primary color enamel is each of white and blue primary color enamels.
[0064]
[Table 8]
Figure 0004426208
[0065]
Example 4 Toning of Blue Paint (BL Paint) (Method of the Present Invention)
For the color matching of the blue paint (BL paint), the blue paint reference plate and the light color reference liquid color measurement data of the blue paint are prepared in advance. As shown in Table 9 below, the initial blend with a small amount of mixed primary color enamel (100% brightening material, 90% mixed primary color enamel, 50% small mixed primary enamel is added to the standard blend, and the total combined primary colors On the other hand, using a computer color matching device (trade name “Alesmatch”, manufactured by Kansai Paint Co., Ltd.) based on the color data of the lighter color reference liquid for blue paints. Then, a blending calculation was performed to obtain a corrected blending (additional amount). When obtaining a correction formulation based on the color measurement data of the lighter color reference liquid, a paint having the same ratio as the thinning ratio at the time of preparation of the lighter color reference liquid, that is, a paint containing 50% of the white primary color enamel for lightening Color difference ΔE with light color reference liquid colorimetric data*Was measured. This correction blending calculation was performed three times to obtain a toning paint. The light color toning paint after blending adjustment 3 times is the color difference ΔE with the light color reference liquid color measurement data of the blue paint*Was 0.23. The toning paint without the white primary color enamel for thinning has a color difference ΔE with the blue paint reference plate.*Was 0.39, and the result of visual evaluation with the blue paint reference plate was A. Here, the small amount blended primary color enamel is each of black and purple primary color enamels, and the large amount blended primary color enamel is each of white and blue primary color enamels. Also, the brightness L of the painted plate of BL paint*The value is 26.1, the lightness L of the lighter color reference plate*The value was 53.4.
[0066]
[Table 9]
Figure 0004426208
[0067]
The visual evaluation of the coated plates in Comparative Examples 1 to 3 and Examples 1 to 4 and Tables 1 to 9 was performed based on the following criteria.
[0068]
Visual evaluation: A standard plate and a coated plate of each glittering paint were visually observed and evaluated according to the following criteria.
A: Good with no difference from the reference plate.
B: Although a slight difference is recognized as compared with the reference plate, it is good.
C: Although a difference is recognized as compared with the reference plate, it is within the limit and is within the range of passing the shipment.
D: The difference exceeds the limit compared to the reference plate, and the shipment is rejected.
[0069]
【The invention's effect】
The method of the present invention can perform toning with higher sensitivity in the toning of dark paint than the conventional method, and can improve the toning accuracy. In the conventional method, it is possible to perform toning with high accuracy even in a color gamut where color matching is difficult.
[0070]
When toning a glitter paint with a bright enamel blended with dark enamel, the toning of the enamel paint, excluding the glitter material, is performed first. Compared with the conventional method in which the blending amount of the agent (excluding the glittering material) is changed, the toning is easier and more accurate.

Claims (6)

下記工程
(1)調色して色合わせをする基準である明度L値が40以下の濃色塗料と白エナメルとを所定配合比率で混合した明度L値が50以上の薄め色基準塗料について、薄め色基準液測色データ又は薄め色基準板を予め得ておく工程、及び
(2)濃色塗料を調色により得る工程であって、該濃色塗料を調色するに当り、調色途中の濃色塗料の一部と白エナメルとを上記所定配合比率で混合した薄め色塗料について、濃色塗料と白エナメルとの該所定配合比率を保持したまま、液測色データを上記薄め色基準液測色データに合せるように調色するか又は薄め色塗装板を上記薄め色基準板に合せるように調色を行い、薄め色塗料の色が合格となる濃色塗料の配合を得て、残りの調色途中の濃色塗料に対し配合補正を行い、調色された濃色塗料を得る工程、
を有することを特徴とする濃色塗料の調色方法。
The following process
(1) Lightness L *, which is a standard for color matching by color matching, and a light color reference paint having a lightness L * value of 50 or more obtained by mixing a dark color paint having a value of 40 or less and white enamel at a predetermined blending ratio. A step of obtaining light color reference liquid colorimetric data or light color reference plate in advance; and
(2) A step of obtaining a dark color paint by toning, and when toning the dark color paint, a part of the dark color paint in the middle of toning and white enamel are mixed at the above-mentioned predetermined blending ratio. For the color paint, the liquid color measurement data is adjusted to match the light color reference liquid color measurement data or the light color coating plate is thinned while maintaining the predetermined mixture ratio of the dark color paint and the white enamel. Toning was performed to match the color reference plate, and the blend of the dark color paint that passed the light color paint passed was obtained, and the blending correction was performed on the remaining dark color paint in the middle of the toning, and the color was adjusted. A step of obtaining a dark paint,
A method for toning a dark paint characterized by comprising:
上記工程(2)における薄め色塗料の調色を色合わせ計算ロジックが作動するコンピュータを用いて行うことを特徴とする請求項1記載の調色方法。  The toning method according to claim 1, wherein the toning of the light-colored paint in the step (2) is performed using a computer in which a color matching calculation logic operates. 下記工程
(A)基準塗料配合が既知であり、調色して色合わせをする光輝性塗料の基準塗料配合から光輝材及び必要に応じて塗料添加剤を除いた明度L値が40以下の濃色塗料と白エナメルとを所定配合比率で混合した明度L値が50以上の薄め色基準塗料について、薄め色基準液測色データ又は薄め色基準板を予め得ておく工程、
(B)光輝材及び必要に応じて塗料添加剤を除いた濃色塗料を調色により得る工程であって、該濃色塗料を調色するに当り、調色途中の濃色塗料の一部と白エナメルとを上記所定配合比率で混合した希釈エナメル塗料について、濃色塗料と白エナメルとの上記所定配合比率を保持したまま、液測色データを上記基準となる薄め色基準液測色データに合せるように調色するか又は薄め色塗装板を薄め色基準板に合せるように調色を行い、薄め色塗料の色が合格となる濃色塗料の配合を得て、残りの調色途中の濃色塗料に対し配合補正を行い、調色された濃色塗料を得る工程、及び
(C)上記調色された濃色塗料に対して、光輝材及び必要に応じて塗料添加剤を混合する工程、
を有することを特徴とする光輝性塗料の調色方法。
In the following step (A), the reference paint blend is known, and the brightness L * value is 40 or less, excluding the glittering material and, if necessary, the paint additive from the reference paint blend of the glitter paint that performs color matching by color matching A step of previously obtaining a light color reference liquid color measurement data or a light color reference plate for a light color reference paint having a lightness L * value of 50 or more obtained by mixing a dark color paint and white enamel at a predetermined blending ratio;
(B) A step of obtaining a dark color paint from which a glittering material and, if necessary, a paint additive are removed by toning, and when toning the dark color paint, a part of the dark color paint in the middle of toning For diluted enamel paint in which white enamel and white enamel are mixed at the predetermined blending ratio, the liquid color measurement data is used as the standard for the liquid color measurement data while maintaining the predetermined blend ratio of the dark paint and the white enamel. Tone color is adjusted to match the light color paint plate or the light color reference plate to match the light color reference plate, and the dark color paint composition that passes the color of the light color paint is obtained. A step of obtaining a toned dark color paint by correcting the blending of the dark color paint , and (C) mixing a brightening material and, if necessary, a paint additive to the toned dark color paint. The process of
A method for toning a glittering paint, comprising:
上記工程(B)における希釈エナメル塗料の調色を色合わせ計算ロジックが作動するコンピュータを用いて行うことを特徴とする請求項3記載の調色方法。  4. The toning method according to claim 3, wherein the toning of the diluted enamel paint in the step (B) is performed using a computer in which a color matching calculation logic operates. 上記工程(C)において、工程(B)で得た調色エナメル塗料に対して基準配合量の光輝材を加えて得た第一次調色塗料について塗装板を作成し、目的とする光輝性塗料の基準塗板との色一致性を判定し、色が合格であれば調色を終了し、色が不合格であれば更に光輝材量の調整による調色を行うことを特徴とする請求項3又は4記載の調色方法。  In the step (C), a coated plate is prepared for the primary toning paint obtained by adding the reference blending amount of the glitter material to the toning enamel paint obtained in the step (B), and the desired glitter The color matching with the reference coating plate of the paint is determined, and if the color is acceptable, the toning is terminated, and if the color is unacceptable, the toning is performed by adjusting the amount of the glittering material. The toning method according to 3 or 4. 上記工程(C)において、色一致性の判定を測色計及び/又は目視にて行うことを特徴とする請求項5記載の調色方法。  6. The toning method according to claim 5, wherein in the step (C), the color matching is determined by a colorimeter and / or visual observation.
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