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Print Control Strips
Print Control Strips in offset printing are used to help printer controlling color thru whole process of printing and at the end we have a quality printed product.This control strips are usually put...
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BASIC COLOR WHEEL
If you look on a basic color wheel you will see that he is separated on 12 parts (colors): primary, secondary and tertiary colors and their variations in brightness. With Red on top circle of color...
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Lags in Drying Time
If the ink dries too slowly in the stack, one can speak of a lag in drying time. This may lead to an ink rub-off of the print during print finishing or during transport. The interaction between ink,...
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Slurring
One talks of slurring whenever the geometry of the halftone dot changes. The printed image then appears to be displaced. The round halftone dot assumes an oval form. Two kinds of slurring exist – on...
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The Ink Roller Train
The ink roller train consists of an ink fountain with ink keys, an ink distribution blade and roller, a ductor roller and alternating hard and soft distribution rollers. Proper ink distribution begins...
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Plate Blinding Chemical
Problem:Part or all of image on plate does not take ink. Plate Blinding - Chemical Cause: Fountain solution too acidic Excessive gum in fountain solution Plate cleaners and/or scratch removers have...
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Ecological Printing – Inks and Coatings
Some of the pigments used in ink contain metallic substances which are harmful to human health and the environment such as cadmium, chromium, lead and mercury. Conventional printing inks are petroleum...
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Deinking of Paper
The ability to deink paper – in other words, to separate ink and coatings from it – is crucial for sustainable recycling of it. Good deinkability is a prerequisite for using used paper to make...
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Offset printing inks – transfer
The transfer of offset printing ink to the printing substrate or intermediate carrier through splitting the ink layer is mainly affected by the following parameters: the thickness of the ink layer on...
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