Inkjet recording method

Abstract

An inkjet recording method for printing by ejecting droplets of a water-based ink composition onto a recording medium having a recording surface which is a plastic film and by causing the droplets to adhere to the recording surface, including: using, as the water-based ink composition, a water-based ink composition including at least colorant, between 0.1 wt % and 1.5 wt % of a silicon-based surfactant, alkanediol, pyrrolidone derivative, thermoplastic resin, and water; and heating the water-based ink composition that has adhered to the recording surface to a temperature of 40° C. or higher.

1 . An inkjet recording method for printing by ejecting droplets of a water-based ink composition onto a recording medium having a recording surface which is a plastic film and by causing the droplets to adhere to the recording surface, comprising:
 using, as the water-based ink composition, a water-based ink composition including at least colorant, between 0.1 wt % and 1.5 wt % of a silicon-based surfactant, alkanediol, pyrrolidone derivative, thermoplastic resin, and water; and   heating the water-based ink composition that has adhered to the recording surface to a temperature of 40° C. or higher.   
     
     
         2 . The inkjet recording method according to  claim 1 , wherein the silicon-based surfactant is a polysiloxane based compound, the alkanediol is 1,2-hexanediol, and the pyrrolidone derivative is N-methylpyrrolidone. 
     
     
         3 . The inkjet recording method according to  claim 1 , wherein the weight ratio, of the amount of silicon-based surfactant to the amount of alkanediol in the water-based ink composition, is between 1:150 and 3:8. 
     
     
         4 . The inkjet recording method according to  claim 1 , wherein the weight ratio, of the amount of alkanediol to the amount of thermoplastic resin in the water-based ink composition, is between 4:3 and 5:2. 
     
     
         5 . The inkjet recording method according to  claim 1 , wherein the amount of pyrrolidone derivative added to the water-based ink composition is between 4.0 wt % and 25.0 wt %. 
     
     
         6 . The inkjet recording method according to  claim 1 , wherein the colorant is a pigment, and the pigment is dispersed in the water-based ink composition. 
     
     
         7 . The inkjet recording method according to  claim 1 , wherein the water-based ink composition also includes a low surface tension organic solvent. 
     
     
         8 . The inkjet recording method according to  claim 7 , wherein the low surface tension organic solvent is diethylene glycol monobutyl ether or triethylene glycol monobutyl ether. 
     
     
         9 . The inkjet recording method according to  claim 1 , wherein the water-based ink composition also includes a wetting agent. 
     
     
         10 . The inkjet recording method according to  claim 1 , wherein heating is performed by heating with a heater or by drying with warm air. 
     
     
         11 . A recorded matter, wherein an image is formed using the inkjet recording method according to  claim 1 .