Eleven, wear resistance is not strong

The performance is: Slight external force rubs fade.

Normal align=center> Reason

Normal align=center> Solution

Normal > 1 ink drying speed is too slow

Normal > 1 Add fast dry agent to adjust dryness

Normal > 2 paper fiber is too thick

Normal > 2 Replace paper

Normal > 3 poor ink film formation

Normal > 3 properly increase the amount of film-forming resin

Normal > 4 bad ink anti-friction performance

Normal > 4 anti-abrasive agent