JP5538665B2 - 全誘電体型光学的可変顔料 - Google Patents
全誘電体型光学的可変顔料 Download PDFInfo
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- JP5538665B2 JP5538665B2 JP2004366969A JP2004366969A JP5538665B2 JP 5538665 B2 JP5538665 B2 JP 5538665B2 JP 2004366969 A JP2004366969 A JP 2004366969A JP 2004366969 A JP2004366969 A JP 2004366969A JP 5538665 B2 JP5538665 B2 JP 5538665B2
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
- C09C1/00—Treatment of specific inorganic materials other than fibrous fillers; Preparation of carbon black
- C09C1/62—Metallic pigments or fillers
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
- C09C1/00—Treatment of specific inorganic materials other than fibrous fillers; Preparation of carbon black
- C09C1/0015—Pigments exhibiting interference colours, e.g. transparent platelets of appropriate thinness or flaky substrates, e.g. mica, bearing appropriate thin transparent coatings
- C09C1/0024—Pigments exhibiting interference colours, e.g. transparent platelets of appropriate thinness or flaky substrates, e.g. mica, bearing appropriate thin transparent coatings comprising a stack of coating layers with alternating high and low refractive indices, wherein the first coating layer on the core surface has the high refractive index
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
- C09C1/00—Treatment of specific inorganic materials other than fibrous fillers; Preparation of carbon black
- C09C1/0015—Pigments exhibiting interference colours, e.g. transparent platelets of appropriate thinness or flaky substrates, e.g. mica, bearing appropriate thin transparent coatings
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
- C09C1/00—Treatment of specific inorganic materials other than fibrous fillers; Preparation of carbon black
- C09C1/0015—Pigments exhibiting interference colours, e.g. transparent platelets of appropriate thinness or flaky substrates, e.g. mica, bearing appropriate thin transparent coatings
- C09C1/0051—Pigments exhibiting interference colours, e.g. transparent platelets of appropriate thinness or flaky substrates, e.g. mica, bearing appropriate thin transparent coatings comprising a stack of coating layers with alternating low and high refractive indices, wherein the first coating layer on the core surface has the low refractive index
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2006/00—Physical properties of inorganic compounds
- C01P2006/60—Optical properties, e.g. expressed in CIELAB-values
- C01P2006/62—L* (lightness axis)
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2006/00—Physical properties of inorganic compounds
- C01P2006/60—Optical properties, e.g. expressed in CIELAB-values
- C01P2006/63—Optical properties, e.g. expressed in CIELAB-values a* (red-green axis)
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2006/00—Physical properties of inorganic compounds
- C01P2006/60—Optical properties, e.g. expressed in CIELAB-values
- C01P2006/64—Optical properties, e.g. expressed in CIELAB-values b* (yellow-blue axis)
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2006/00—Physical properties of inorganic compounds
- C01P2006/60—Optical properties, e.g. expressed in CIELAB-values
- C01P2006/65—Chroma (C*)
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
- C09C2200/00—Compositional and structural details of pigments exhibiting interference colours
- C09C2200/30—Interference pigments characterised by the thickness of the core or layers thereon or by the total thickness of the final pigment particle
- C09C2200/308—Total thickness of the pigment particle
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S428/00—Stock material or miscellaneous articles
- Y10S428/913—Material designed to be responsive to temperature, light, moisture
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
- Y10T428/2982—Particulate matter [e.g., sphere, flake, etc.]
- Y10T428/2991—Coated
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Pigments, Carbon Blacks, Or Wood Stains (AREA)
- Optical Filters (AREA)
- Paints Or Removers (AREA)
- Laminated Bodies (AREA)
- Developing Agents For Electrophotography (AREA)
- Electrochromic Elements, Electrophoresis, Or Variable Reflection Or Absorption Elements (AREA)
- Inorganic Compounds Of Heavy Metals (AREA)
Description
L*=116(Y/YW)1/3−16
a*=500[(X/XW)1/3−(Y/YW)1/3]
b*=200[(Y/YW)1/3−(Z/ZW)1/3]
であり、ここでXW、YW、およびZWは特定の照明下での白色基準に関するX、Y、およびZの値である。
C*=(a*2+b*2)1/2
として計算されることが可能であり、座標の中心では色度はゼロに等しく、中心からの距離に従って増大する。
真空蒸着技術で達成されることが可能な処理の制御は、予測し得る光学的に可変の顔料および箔の可能性を提供する。空気中、または好ましくは空気よりも大きい屈折率を備えた塗料のようなキャリア中での反射率vs波長および色行程のコンピュータモデル化が、必要以上に試行錯誤の実験をせずに特異的な色特性を有する顔料フレークを設計するために使用されることが可能であることが見出された。制御可能な真空薄膜蒸着技術の使用は選択された光学特性を備えた顔料フレークを首尾一貫して得るために使用されることが可能である。特に、望ましくない色の反射率ピークの抑制が独特の色シフト特性を備えた干渉性顔料を作製し得ることが見出された。そのような色性能は従来式の光学設計によって達成することが困難である。
QWOT=4nd
によって規定される。
図1は透明または染色された塗料基剤またはインク媒体のような担体99で囲まれた本発明の一実施形態による2色性顔料フレーク101の単純化された断面を含む形成体100の単純化された描写である。この顔料フレークはおよそ、幅で約20〜50ミクロン、および通常では厚さ約0.5〜2ミクロンの程度であり、光学的に可変の画像を例えば文書、製品、およびパッケージ上に印刷するために使用されることが可能である。
下記で図2A〜5に示される反射率および色行程のプロットはコンピュータ・シミュレーションを使用して作り出されたものであり、光学フィルタのシミュレーション・プログラムの多くの例が市販入手可能である。そのようなコンピュータ・シミュレーションは、もしも(複数の)顔料を作製するために使用される製造工程が適切に制御可能であり、かつ再現可能であれば、色シフトする顔料フレークの色性能を正確に予測することが見出された。特に、優れた工程制御を為された真空薄膜蒸着が膜の厚さおよび組成を与えることが理由で真空薄膜蒸着技術と組み合わされるとコンピュータ・シミュレーションが大いに有用であることが見出された。
100 形成体
101 2色性顔料フレーク
103、105、111 高屈折率層
107、109 低屈折率層
120 1次のピーク
122 3次のピーク
124 2次のピーク
Claims (11)
- 全誘電体型2色性顔料フレークであって、
光学的干渉構造体を形成する複数の薄膜の層を含み、前記複数の薄膜の層が(aH bL)naHとして配列され、ここでnが整数であり、aとbが乗数であり、Hが2.0を下回らない相対的屈折率および400nmと2200nmの間にある波長λ0で1/4波長の光学的厚さを有する高屈折率層を表わし、Lが1.6を上回らない相対的屈折率および前記波長λ0で1/4波長の光学的厚さを有する低屈折率層を表わし、ここで比a:bが1:4と4:1の間の整数の比であり、前記複数の薄膜の層の厚さと材料は、前記光学的干渉構造体のスペクトル反射率曲線がm次の反射率ピークを有するようにされ、ここでmは1よりも大きい整数であり、m次の反射率ピークは、300nmと1000nmの間の波長で生じ、第1の観察角度で第1の反射率および第2の観察角度で第2の反射率を有し、第1の反射率が第2の反射率よりも少なくとも20%小さく、かつ前記全誘電体型2色性顔料フレークは、20〜50ミクロンの幅および0.5〜2ミクロンの厚さを有する、全誘電体型2色性顔料フレーク。 - 第1の反射率が5%を超えず、かつ第2の反射率が60%を下回らない、請求項1に記載の全誘電体型2色性顔料フレーク。
- 第1の観察角度が垂線方向の観察角度であり、かつ第2の観察角度が第1の観察角度から少なくとも30度である、請求項2に記載の全誘電体型2色性顔料フレーク。
- 第1の観察角度が第2の観察角度よりも小さく、第1の観察角度および第2の観察角度が2色性顔料フレークに対する垂線から測定される、請求項1に記載の全誘電体型2色性顔料フレーク。
- 第1の観察角度が第2の観察角度よりも大きく、第1の観察角度および第2の観察角度が2色性顔料フレークに対する垂線から測定される、請求項1に記載の全誘電体型2色性顔料フレーク。
- aH層の各々が第1の高屈折率材料を含み、bL層の各々が第1の低屈折率材料を含む、請求項1に記載の全誘電体型2色性顔料フレーク。
- 第1のaH層が第1の高屈折率材料を含み、第2のaH層が第2の高屈折率材料を含む、請求項1に記載の全誘電体型2色性顔料フレーク。
- nが1よりも大きく、かつ第1のbL層が第1の低屈折率材料を含み、第2のbL層が第2の低屈折率材料を含む、請求項1に記載の全誘電体型2色性顔料フレーク。
- a=bであり、かつ波長λ 0 が900nmと1300nmの間にある、請求項1に記載の全誘電体型2色性顔料フレーク。
- 比a:bがN:1であり、Nが整数であり、m次の反射率ピークが(N+1)次の反射率ピークである、請求項1に記載の全誘電体型2色性顔料フレーク。
- aH層がbL層よりも大きい物理的厚さを有する、請求項1に記載の全誘電体型2色性顔料フレーク。
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/741,896 | 2003-12-19 | ||
US10/741,896 US7238424B2 (en) | 2002-05-31 | 2003-12-19 | All-dielectric optically variable pigments |
Publications (2)
Publication Number | Publication Date |
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JP2005248158A JP2005248158A (ja) | 2005-09-15 |
JP5538665B2 true JP5538665B2 (ja) | 2014-07-02 |
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Application Number | Title | Priority Date | Filing Date |
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JP2004366969A Active JP5538665B2 (ja) | 2003-12-19 | 2004-12-20 | 全誘電体型光学的可変顔料 |
Country Status (8)
Country | Link |
---|---|
US (1) | US7238424B2 (ja) |
EP (1) | EP1544255B1 (ja) |
JP (1) | JP5538665B2 (ja) |
KR (1) | KR101060184B1 (ja) |
CN (1) | CN100475915C (ja) |
AT (1) | ATE507266T1 (ja) |
DE (1) | DE602004032416D1 (ja) |
TW (1) | TWI368755B (ja) |
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TW200525171A (en) | 2005-08-01 |
KR101060184B1 (ko) | 2011-08-29 |
JP2005248158A (ja) | 2005-09-15 |
EP1544255B1 (en) | 2011-04-27 |
TWI368755B (en) | 2012-07-21 |
ATE507266T1 (de) | 2011-05-15 |
EP1544255A2 (en) | 2005-06-22 |
US7238424B2 (en) | 2007-07-03 |
DE602004032416D1 (de) | 2011-06-09 |
EP1544255A3 (en) | 2006-02-08 |
CN100475915C (zh) | 2009-04-08 |
US20050132929A1 (en) | 2005-06-23 |
CN1637078A (zh) | 2005-07-13 |
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