Method for printing and printer
AssigneeRicoh Company, Ltd.
InventorHiroshi Gotou
Life of this patent
Estimating the term…
Abstract
A method for printing is provided including: applying a pretreatment liquid containing a compound that aggregates an anionic compound on a print medium, and applying an ink containing water, an organic solvent, and a resin particle on the print medium to which the pretreatment liquid has been applied. The resin particle includes a polyurethane resin particle. The ink contains a cyclic ester having a structure represented by the following general formula (I). After the ink is left to stand and stored under a room temperature environment (25±5° C.) for a month, a rate of content of crystals of the cyclic ester having a particle diameter of 1 μm or larger in the ink is lower than 4 ppm.
Claims17
A method for printing, comprising:
- applying a pretreatment liquid containing a compound that aggregates an anionic compound on a print medium;
- and
- applying an ink containing water, an organic solvent, and a resin particle on the print medium to which the pretreatment liquid has been applied,
- wherein the resin particle includes a polyurethane resin particle comprising a polyurethane resin having a structure represented by the general formula (I):
- wherein after the ink is left to stand and stored under a room temperature environment (25±5° C.) for a month, a rate of content of crystals of the cyclic ester having a particle diameter of 1 μm or larger in the ink is lower than 4 ppm.
A printer comprising:
- a pretreatment liquid-applying mechanism configured to apply a pretreatment liquid containing a compound that aggregates an anionic compound on a print medium;
- and
- an ink applying-mechanism configured to apply an ink containing water, an organic solvent, and a resin particle on the print medium to which the pretreatment liquid has been applied,
- wherein the resin particle includes a polyurethane resin particle comprising a polyurethane resin having a structure represented by the general formula (I):
- wherein the ink contains a cyclic ester having a structure represented by general formula (I), and after the ink is left to stand and stored under a room temperature environment (25±5° C.) for a month, a rate of content of crystals of the cyclic ester having a particle diameter of 1 μm or larger in the ink is lower than 4 ppm.
Dependencies are inferred from the claim text.