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Is there a relation between the size of Blanket and Plate used in high-speed web offset press. Also does it has any relation with the size of various rollers

What's the function of Kick back roller in the ink train. It's timing can be varied so how can it set the best way. This with reference to kick back roller, drive in our Komori heatset weboffset press System 35

In some presses the cut off is 21.5" which is 546.10 mm and in some it's 546 mm. Is the difference only theoretical or is there a difference of 0.01mm practically.

Press : Harris M1000B heatset press with 8 print units There is ink catch up on slip rollers resulting in ink transfer problems and needs to be cleared regularly. The start up waste is also high. Have tried several inks and fountain solutions. Request advise on over coming it.

THere is an issue of cracking of spine of cover ( coated papera)for magazines after saddle stitching. This was folded on the run in Motter folder attached to the high speed press.

While printing very heavy images in high speed heatset web press, on supercalendered and light weight coated paper, there is improper stacking or stacking is very bad, This improves drastically while printing the next signature which has moderate images. What is the reason. What is the solution