色に関するブログ

測色は、色の重要な作業において、色の品質を指定・定量化・伝達・定形化・検証するために必要です。色の感じ方は人それぞれ異なるため、測色は目視評価より正確な結果を得られます。  色測定とは？ 色測定は、サンプルによって放射・透過・反射される光の量をとらえ、スペクトルデータとして定量化することで、光源の変化分も捉えることが出来ます。測色計（分光測色計）で行う色測定は、目視評価より正確です。なぜなら、人間の色認識は差を表すのは得意ですが、定量的に示すことは不得意です。色に関わる重要な作業には、色を識別・定量化・伝達・区別するための分光測色計の導入を強く推奨します。 色波長の測定方法 色を測定するには、分光測色計と呼ばれる測色装置でサンプルに光を当て、人間の目に見える波長範囲である380nmから780nmの範囲で透過または反射した光の量をとらえます。分光測色計は波長範囲にわたるスペクトル波長測定に基づき、計算を行い、スペクトルデータを定量化します。  測色計とは？ 測色計には、色彩計と分光測色計の２種類あります。 色彩計は人間の目と同じように色を認識し、赤・緑・青を感じる3...

In my recent blog I explained why the demand for printed fabrics is increasing and the challenge this poses for the digital print industry. Today, with help from Digital Imaging Expert Scott Martin of Onsight, I will share tips and tools to help printers profile textiles for a consistent digital workflow. While smooth textures can often be measured using traditional digital tools, fabrics with texture or specular reflections (like coated canvases) can cause issues. It's a lot harder to achieve ...

Managing color throughout production is always a challenge, but advances in color technology, like the metallic, shimmer, and pearlescence effects designed to capture consumer attention, are taking the frustration to a whole new level for quality control managers. This is especially true when producing parts that must match at assembly, such as the metal panels for a home appliance or the painted side mirrors for a vehicle.  Special effects are tricky to control because our perception can c...

We frequently get calls from customers who can’t figure out why their measurements vary, even when they’re using maintained devices. Why would a sample read one way one day, then slightly different another? Many times the culprit is thermochromaticity, and it becomes an even bigger problem as the seasons change. Every kind of material changes color with temperature. These changes cause the material to exhibit a shift in reflected wavelengths of light, which can alter our perception....

If accurate color is a must in your world, then you know the importance of color measurement instrumentation. Spectrophotometers are used in many industries to identify, formulate, measure and communicate color. They can compare samples and standards to identify even the smallest differences. From concept through formulation and production, spectrophotometers are an invaluable part of any color-managed workflow. But have you ever stopped to think how these devices were developed? Today we’ll tak...