·
1. Printing plate blank part of the roughened surface wear prone to failure
Over a long period, the roughened surface of the blank area may be worn away, resulting in:
(1) the humidity performance of the printing plate is reduced, you must increase the supply of fountain solution, to maintain ink balance.
(2) printing plate surface storage of water reducing, adsorbed on the printing plate surface of less colloid, if printing short-term stop, do not rub glue is easy to get dirty, to the production of great inconvenience. Roughened surface wear more serious words. You must replace the printing plate.
II. Common faults and solutions of ink printing