Offset printing technology | Offset lithography

Offset printing technology is preferred method for printing materials providing lower per-unit costs with the quality for larger print runs.

offset printing inks

transfer of ink — 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 the offset printing plates (ink supply), the period of contact (printing speed and geometry of the printing components), […]

Offset printing inks – transfer

07/12/2011 in offset printing inks tagged ink thickness / ink transfer / offset printing / offset printing inks / offset printing technology / printing substrates / rheological ink properties by vlad682000

graphic diagram of deinking — 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 graphical papers and hygienic paper products. Effective processes are available today for removing aqueous coatings […]

Deinking of Paper

11/10/2011 in offset printing inks tagged deinking of paper / offset inks / offset printing inks / offset printing technology by vlad682000

eco printing inks — 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 – based and used with alcohol-based solvents. As alcohol and petroleum evaporate Volatile Organic Compounds (VOCs) are emitted. VOCs […]

Ecological Printing – Inks and Coatings

11/10/2011 in offset printing inks tagged Ecological Printing - Inks and Coatings / offset inks / offset printing inks / offset printing technology by vlad682000

plate blinding or wear — Problem:Part or all of image on plate does not take ink. Cause: Fountain solution too acidic Excessive gum in fountain solution Plate cleaners and/or scratch removers have dried on plate image Fountain system contaminated by detergent Excessive fountain solution in ink Improperly developed plates; gum adheres to image area […]

Plate Blinding Chemical

07/10/2011 in troubleshooting tagged offset plates / offset printing / offset printing inks / offset printing technology / plate blinding chemical by vlad682000

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 at the ink fountain. If the blade is nicked, the roller surface scored or pitted, or the fountain […]

The Ink Roller Train

05/10/2011 in sheet feed offset printing tagged cmyk rollers / Ink Roller / offset inks / offset printing / offset printing inks / offset printing technology by vlad682000

Dot Distortion — 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 the one hand, in the direction of printing (circumferential slurring), and on the other hand, […]

Slurring

03/10/2011 in troubleshooting tagged Dot Distortion / offset inks / offset printing / offset printing inks / slurring / troubleshooting by vlad682000

chalking — 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, additives, and dampening solution is usually to blame for lags in drying […]

Lags in Drying Time

03/10/2011 in troubleshooting tagged Lags in drying time / offset inks / offset printing / offset printing inks / troubleshooting by vlad682000

painting colors 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 consists of three primary colors: Red, Yellow and Blue. Those three colors close triangle […]

BASIC COLOR WHEEL

29/09/2011 in offset printing inks tagged basic color wheel / offset printing / offset printing inks / offset printing technology by vlad682000

Color bar used for control of ink in offset printing — Print Control Strips in offset printing are used to help printer controlling color through whole process of printing and at the end we have a quality printed product. This control strips are usually put across the edge of the printed sheet containing various test elements for each of the four […]

Maximizing Quality in Offset Printing

20/09/2011 in Offset printing tagged color / control strips / offset inks / offset plate / offset printing / offset printing inks / offset printing technology / printing color strips / registration marks by vlad682000