Patent ID: 8162470

Claim:
An inkjet printer to eject solvent ink, comprising: a platen; a printing head configured to move in a right-left direction above the platen and eject solvent ink from nozzles of the printing head on a medium at a printing position substantially in alignment with the printing head which does not have a heater for the printing head, the medium made of a polyvinyl chloride film on which no coating agent is applied, the solvent ink comprising an organic pigment of from 3 to 7 weight %, a resin of 15 weight % or less, and solvents; a feeding device configured to feed the medium on the platen in a forward direction substantially perpendicular to the right-left direction; a pre-heater configured to preliminarily heat the medium on the platen before the printing position in the forward direction; a print heater configured to heat the medium at the printing position, the print heater being arranged separately from the pre-heater; a temperature controller configured to control a pre-heater heating temperature of the pre-heater and a print heater heating temperature of the print heater such that a surface temperature of the medium at the printing position becomes within a range of from 30° C. to 70° C.; and a refresh mode device configured to move the printing head to a maintenance station to eject ink droplets from the nozzles of the printing head so as to mitigate clogging in the nozzles at predetermined time intervals.