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 technology

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

powder application offset printing — In sheet-fed offset printing, the conventional ink is still not thoroughly dry when the sheet arrives at the delivery pile. Consequently one of the major requirements in sheetfed offset printing is the avoidance of smearing, offsetting (transfer of ink onto the following sheet), and blocking in the pile (sheets lying […]

Powder Application in Offset Printing

26/11/2011 in sheet feed offset printing tagged offset printing / offset printing technology / powder offset printing / sheet-fed offset printing / sheets by vlad682000

For cleaning the rollers it is recomended: 1. Use a water miscible wash to remove the top layer of solvent-soluble and water-soluble particles from the nap of the roller. 2. Use a non-grit roller paste to remove the insoluble particles. 3. Finally, wash a second time with a water-miscible wash […]

Roller Maintenance

07/11/2011 in Offset printing tagged offset printing / offset printing technology / Roller Maintenance by vlad682000

embossing — Embossing is among the most complicated yet most effective of most types of surface finishing. The embossed look is achieved solely by deformation of the materials by means of a block or die, that is, the formation of a relief; that may be superimposed in film lamination after the film […]

Embossing – basic

06/11/2011 in Postpress tagged embossing / offset printing / offset printing technology / postpress by vlad682000

hot foil printing — Perfectly shiny surface elements in gold, silver, copper, aluminum and metallic colors can be transferred to the substrate by hot-foil stamping. A base film is covered with a layer providing the color and a hot-melt glue (adhesive coating layer). The image can be transferred under pressure and heat by using […]

Hot foil stamping

02/11/2011 in Postpress tagged embossing / hot foil stamping / offset printing / offset printing technology by vlad682000

aqueous — Printers have known for a long time that some aqueous coatings make an excellent primer for offline UV jobs, but more and more “specialty” jobs require foil stamping, gluing [pocket folders], ink jet [address labels], or the ability to go through a laser printer. Ultraviolet [UV] Coating Almost every high-end […]

Printing over aqueous coatings

22/10/2011 in Basic info tagged Aqueous coating / offset printing / offset printing technology by vlad682000

VISCOSITY — RUB RESISTANCE – When printed materials rub against machinery during finishing operations or against each other during shipping or handling, the printed surface is subject to a rubbing action that tends to wear or scratch the printed surface. Water-based coatings applied over the printed surface help to improve the rub […]

AQUEOUS COATINGS-Part 2

21/10/2011 in Basic info tagged aqueous coatings / offset printing / offset printing technology by vlad682000

glossmeter device — Aqueous coatings ( water-based varnishes) are used from commercial printers for a long time giving benefits to final product and to printers in a way of higher gloss of printed product, better rub resistance, smoother feel (elimination or reduction of spray powder), and faster handling of the printed work. Basic […]

Aqueous coating-Part 1

18/10/2011 in Basic info tagged Aqueous coating / offset printing / offset printing technology / varnishing by vlad682000

blanket for printing — Although printing blankets may appear similar on the surface, there are a number of factors to consider when selecting the proper blanket for your press and printing application. Printing blankets have many physical properties that vary depending upon the manufacturer and the blanket style. Characteristics such as: print quality release […]

Printing Blanket Characteristics

13/10/2011 in sheet feed offset printing tagged blanket characteristics / offset printing / offset printing blankets / offset printing technology 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