Em um mundo perfeito, você deve ser capaz de colocar tinta na impressora, executar um trabalho e alcançar consistência de cor. Infelizmente, todos os anos, as operações de impressão flexográfica e de gravura desperdiçam tinta, substrato e tempo de impressão tentando obter a cor correta. Embora os avanços na tecnologia tenham facilitado a precisão da cor, as variáveis que afetam a cor ainda existem. Nesta série de três partes, compartilharemos mais de duas dúzias de razões pelas quais sua cor ...
Posted October 18, 2021 by Scott Harig
A aparência da superfície pode alterar sua percepção de cor. Pense em uma revista brilhosa. Se a luz estiver brilhando diretamente na página, pode ser necessário inclinar a revista e alterar o ângulo de reflexão para ver claramente as cores. Da mesma forma, uma superfície texturizada pode parecer ser uma cor diferente de uma superfície lisa do mesmo objeto. Como os espectrofotômetros determinam os valores espectrais de uma cor, iluminando a superfície e medindo a refletância, é crucial escolh...
Posted March 30, 2021 by Tim Mouw
A COVID-19 parou muitas indústrias, incluindo o têxtil. Proibições de viagens e ordens de isolamento social estão forçando cadeias de fornecimento vastas e interconectadas a repensar a forma como trabalham. Para as marcas que já estavam procurando novas maneiras de obter cores precisas e acelerar o tempo de entrada no mercado, essa pode ser uma oportunidade. Essa pandemia global pode ajudar a indústria do vestuário a tomar decis&otild...
Posted May 19, 2020 by Bob Karpowicz
Reflective surfaces and metallic inks are very popular for printing and packaging applications. Consumers love the look; but for printers, these substrates and inks are expensive and make color control a challenge. Today we’re taking a look at the measurement options available for controlling these very marketable print and packaging applications to help printers and converters meet brand owner expectations and maintain the highest possible quality output. Sphere vs. 45°:0° - ...
Posted May 07, 2020 by Mark Gundlach
The two most common spectrophotometers are the 0:45 and the sphere (aka diffuse/8°). We get a lot of questions about which is the best choice. Here’s the difference in how these two devices measure color, and guidelines for when to use each. 0:45 In a “fixed geometry” or “single angle” device, the first number is the starting point of the light, and the second number is where the light ends up after the reflection off the surface of the sample. In a 0:45 ...
Posted January 18, 2018 by Mike Huda
The World Series starts next week. While players and fans are gearing up for the big event, stadium groundskeepers are preparing, too. You’ve surely seen those meticulous patterns in the grass – crisscross, spiral, plaid – but do you know how the groundskeepers create them? Thanks to a phenomenon called geometric metamerism (aka gonio-appearance), the grass really is greener on the other side. Read on to learn more about this optical illusion that can trick your eyes and wreak havoc on y...
Posted October 17, 2017 by Mike Huda
Have you ever sent out a job that passed your inspection, only to have the customer reject it for out-of-tolerance color? You recheck the data and the instrument says the color passed the agreed tolerance… why is the customer saying it doesn’t? We get a LOT of these conflicting measurement calls in technical support. The solution is simple – document a color control program that clearly defines how to assess color, then make sure everyone (including your customer) follow...
Posted September 08, 2017 by X-Rite Color
No matter what you’re manufacturing, taking spectral measurements will help ensure your color remains accurate and consistent throughout your production run. When choosing the best spectro for your needs, your first consideration should be the type of surface you’ll be measuring. Measuring reflective surfaces poses a challenge because the effect of gloss can actually change the color appearance of a sample. The surface reflection of light is what causes the gloss effec...
Posted April 27, 2016 by Tim Mouw
