| abstract |
A pretreatment solution which is used together with an aqueous inkjet ink that comprises at least a pigment, whereinthe pretreatment solution comprises an inorganic metal salt and/or an organic metal salt, an organic amine, and an organic solvent,the inorganic metal salt and/or organic metal salt and the organic amine exist in a dissolved state in the pretreatment solution, anda difference between a pH of the aqueous inkjet ink and a pH of the pretreatment solution is not more than 2. |