containing 1 u2013 10 of such amino acids is printed with pigmented inks superior image quality better than that obtainable with the pigmented inks alone is obtained furthermore the amino acids lead to much better compatibility with various adhesives than can be achieved with acids that do not have a permanent charge amine cured epoxy adhesive was exposed to fixer fluid at 70 u00b0 c for 21 days and then examined fixer fluids containing 4 acid of either acetic acid succinic acid or glutaric acid respectively lead to greater than 11 weight gain causing die bow and die cracking in the adhesive the weight gain of the adhesive in the fixer fluid containing 4 u03b2 alanine was decreased to 4 eliminating die bow and die cracking issues six fixer and ink compositions were prepared containing various buffer formulations each fixer or ink composition was used to soak cured adhesive bars in the size of 20 mm u00d7 10 mm u00d7 4 mm the soaking was conducted at 70 u00b0 c for four weeks various combinations of succinic acid 1 2 hexanediol and u03b2 alanine were used in the buffer formulations specific combinations and results are given below in table 2 fixer fluid 2 has 15 organic solvents but lacks the 1 2 hexanediol of fixer fluid 1 fixer fluid 2 also has 0 5 water soluble surfactants 4 succinic acid 3 cationic polymer and the balance water fixer fluid 3 is identical to fixer fluid 1 except that it contains 4 beta alanine instead of 4 succinic acid the ink of table 2 consists of 20 organic solvents but.