Web Offset Printing

A detailed description of web offset press operation is beyond the scope of this publication or training. However, the growth of web printing for books, newspapers, magazines, business forms, etc. has made the process a major part of the printing industry. The following information will give you a brief introduction and understanding of the workings […]

Web Offset Printing – Heat Set Web

Heatset implies heat. To set and dry the ink, heat is applied via an drying oven which evapo-rates the solvents in the ink. After the printed web passes through the oven, the web passes a series of chill rolls that cool the web and set the ink. Most heatset commercial web presses are blanket-to-blanket, thus […]

Web Offset Printing – Pasters

Flying Splicer “Flying Splice” – As the main feeding roll nears its end, the roll stand is rotated to bring the next full roll of paper into running position. This is done with the press running at full or operating speed. Double-sided tape is applied to the leading edge of the new roll. The new […]

Web Offset Printing – Cold Set Web

“Cold-set” presses are generally in the 17-inch wide range. This of course varies as large newspaper presses today are also mostly “cold-set.” These “baby webs” have been used mainly by the business forms printer to print forms that in most cases contained very little printing. This is why many forms printers were called “converters” as […]

Web Offset Printing – Newspaper Presses

Newspaper presses are very similar to normal offset presses except the printing units are arranged vertically instead of horizontally. This is done to conserve fl oor space due to the vast amount of pages to print. Keep in mind that when a newspa-per is printed, the whole paper is printed in one pass.The roll stands […]