Patent ID: 8007548

Claim:
A pretreatment fluid, consisting essentially of: an effective amount of a fluorinated surfactant selected from at least one non-ionic fluorinated surfactant, at least one ionic fluorinated surfactant, and combinations thereof, the fluorinated surfactant being selected from and wherein Q 1 and Q 2 are independently selected from H and SO 3 − W + , wherein W is selected from NH 4 + , Li + , Na + , and K + , wherein R 2 and R 4 are independently selected from H and OH, wherein R 1 , and R 5 are each O(CH 2 ) m —(CF 2 ) n —CF 3 , wherein m ranges from 1 to 3 and n ranges from 0 to 3, wherein R 3 is wherein L ranges from 1 to 4, and wherein x ranges from 1 to 10, y ranges from 1 to 30, and z ranges from 1 to 10; a vehicle; and; optionally at least one non-fluorinated surfactant; and optionally ethylene-diamine-tetra-acetic acid (EDTA); wherein the effective amount is selected based upon: a system in which the pretreatment fluid is used, an ink composition used in the system, system pretreatment time, pretreatment vehicle components, or combinations thereof, and wherein the effective amount of the fluorinated surfactant includes the at least one non-ionic fluorinated surfactant and the at least one ionic fluorinated surfactant present in a weight ratio ranging from about 1:200 to about 200:1.