Web Offset Printing in China and heatset web offset presses

Web Offset Printing Image Printing Bookprintingcn.com Offset lithography is the most commonly trusted high volume commercial printing technology. In offset printing, the design image is first burned onto a plate, and is then transferred (or offset) from the plate to a rubber sheet, and finally to the printing surface. The lithographic process is based on the repulsion of oil and water. The image to be printed gets ink from ink rollers, while the non printing area attracts a film of water, keeping the non printing areas ink-free. 64-page manroland Lithoman The hardcover book printing heatset web offset presses offer quick makeready and flexible formats from A4, A5, tabloid, broadsheet and delta sizes. High quality coated, uncoated or mechanical and newsprint paper ranging in thickness from 40gsm to 200gsm can be accommodated. They are equipped with a QuadTech Colour Control system, Brünner Flight Instrument Control, Multicam cut-off and Register Control System, which simultaneously manage dot gains, mid-tones and gray balance. Colour and print registration is checked 30 times per second on the web offset presses, with automatic adjustment of the press. Each print copy matches the signed-off proofs according to ISO certified standards. All the heatset web offset presses are equipped with Planatol inline gluing log stackers and automatic palletisers to speed up the delivery of material. 16-page manroland Rotoman with 578mm cut-off prints up to 65 000 16-page full colour copies per hour. It is suitable for magazine cover work, allowing for a fifth colour, encapsulated fragrance applications or spot varnish finish, and is equipped with inline gluing, sheeter and log stacking equipment with automatic palletiser. 64-page manroland Lithoman with 1156mm cut-off is suitable for commercial work and magazine printing. It prints up to 45 000 64-page copies per hour and is equipped with dual log stackers and automatic palletisers. 48-page manroland Lithoman with 1156mm cut-off is perfect for the printing of magazines and catalogues with a double parallel folder accommodating the folding of these publications. It delivers 45 000 full colour 48-page copies per hour and includes trimming and stacking capabilities. Inline finishing provides finished material such as a full colour stitched or glued 48-page A4 directly off the press. Heatset web offset printing responsibly highlights Regenerative Thermal Oxidisers: In 2005, Paarl Media led the way with the installation of centralised RegenerativeThermal Oxidisers (RTO's) on all heatset web offset presses to eliminate emissions in line with stringent international standards. The Megtec's Dual-Dry? TNV RTO technology used ensures that the air released is free of odour, visual smoke and polluting substances. Energy is recovered from the oxidisation process to be re-utilised in the drying section; thereby vastly reducing gas energy consumption. Alcohol free printing: Traditionally, a volatile organic compound (VOC), Isopropyl alcohol (IPA), is used as an additive in the dampening system. Its fumes are toxic and it has a low flash point resulting in fire and safety hazards in the workplace. Paarl Media has implemented an alcohol free printing process on all its web offset presses, which offers lower ink and water settings along with the ability to print a given density using an ink film that isn't diluted by alcohol. The result is better quality book printing with sharper dots and less tendency for emulsification.