Basic Notes for Printers

It should be noted that the contact gap of the cylinder must have the values that have been stipulated to avoid problem of its edges dropping off fast. In multi-colour machines, rolls help a great deal to wash the cylinder that works continuously and periodically. Beware of cleaning substance like gasoline and solvent causing rubbers to swell by damaging its structure

In cylinder coating, outer diameters of the rolls mentioned in the manufacturer’s manual must be taken as basis. Error in outer diameter measurement causes undesired results in ink density. The required cylinder’s area of usage is important because if the producer makes the coating in the rigidity level that is appropriate for the area of usage, the running efficiency of the cylinder will be increased.

Bearings and shaft ends of the new coated or used rolls must be straight and rotate without balance. Otherwise that will cause problems of faulty transfer of ink. Rollers should be cleaned during stoppage of the machine otherwise the ink which dries quickly will stick on it which in turn causes affusions on rubber surface.