Halftones

At Clays we use cold set web presses. Halftones can be successfully printed on text paper, however, wherever possible, halftones should be avoided in the first or last sections of the book (first 32 or last 32pp) as a certain amount of "set-off" (i.e. ink transferring onto the page facing the halftone) is inevitable due to the binding process. This will be particularly noticeable on hardback titles, if the illustration or tint is particularly dark or if the illustration is facing the title page or a blank page. If you have a title where positioning of halftones on these pages is unavoidable, please contact your account controller to discuss.

For printing on text paper the screen ruling should be 150 lines per inch. For printing as separate illustration sections printing on coated paper the screen ruling should be 175 lines per inch.

Please contact us for confirmation of the three curves required for halftone screening and for any other details.