US 10,946,673 B2 · Surface drying device for sheet-like non-permeable base material, printing apparatus, and printing method

Abstract

Provided are a surface drying device for a sheet-like non-permeable base material with enhanced drying efficiency on a surface of a sheet-like non-permeable base material having a liquid adhering to a surface thereof, and a printing apparatus and a printing method using the surface drying device. The surface drying device for a sheet-like non-permeable base material includes: a loading port for loading a sheet-like non-permeable base material with a liquid adhering surface; an air nozzle configured to spray high-temperature air; an unloading port for unloading the sheet-like non-permeable base material; an air shield zone forming portion, which is formed between the loading port and the unloading port, and is configured to form a heat-insulating air shield so as to cover the liquid adhering surface of the sheet-like non-permeable base material; and a retained air exhaust portion configured to exhaust retained air retained on the liquid adhering surface of the sheet-like non-permeable base material to outside of the air shield zone forming portion through use of a Coanda effect, to thereby replace liquid adhering surface air on the liquid adhering surface of the sheet-like non-permeable base material.

Claims20

Dependent claims

A surface drying device for a sheet of non-permeable base material, the surface drying device comprising:

a loading port for loading a sheet of non-permeable base material with an ink adhering surface having an ink adhering to a surface thereof;
an air nozzle configured to spray high-temperature air onto the ink adhering surface of the sheet of non-permeable base material loaded;
an unloading port for unloading the sheet of non-permeable base material;
an air shield zone forming portion, which is formed between the loading port and the unloading port, and the air shield zone forming portion is configured to form a heat-insulating air shield so as to cover the ink adhering surface of the sheet of non-permeable base material;
a retained air exhaust portion, which is formed in the air shield zone forming portion, and the retained air exhaust portion is configured to exhaust retained air retained on the ink adhering surface of the sheet of non-permeable base material to outside of the air shield zone forming portion via a Coanda effect, to thereby replace ink adhering surface air on the ink adhering surface of the sheet non-permeable base material;
and
a conduction and convection portion provided in the air shield zone forming portion, wherein the retained air exhaust portion is an exhaust portion configured to perform removal and replacement of a solvent that is evaporated and convected to a final portion of the air shield zone forming portion.

4 more elements

A printing apparatus, comprising:

a surface drying device for a sheet of non-permeable base material so as to dry an ink adhering surface of the sheet of non-permeable base material having ink adhering thereto, the surface drying device comprising:
a loading port for loading the sheet of non-permeable base material with a liquid adhering surface having a liquid adhering to a surface thereof;
an air nozzle configured to spray high-temperature air onto the liquid adhering surface of the sheet of non-permeable base material loaded;
an unloading port for unloading the sheet of non-permeable base material;
an air shield zone forming portion, which is formed between the loading port and the unloading port, and the air shield zone forming portion is configured to form a heat-insulating air shield so as to cover the liquid adhering surface of the sheet of non-permeable base material;
a retained air exhaust portion, which is formed in the air shield zone forming portion, and the retained air exhaust portion is configured to exhaust retained air retained on the liquid adhering surface of the sheet of non-permeable base material to outside of the air shield zone forming portion via a Coanda effect, to thereby replace liquid adhering surface air on the liquid adhering surface of the sheet non-permeable base material;
and
a conduction and convection portion provided in the air shield zone forming portion, wherein the retained air exhaust portion is an exhaust portion configured to perform removal and replacement of a solvent that is evaporated and convected to a final portion of the air shield zone forming portion.

5 more elements

A printing method, comprising:

drying an ink adhering surface of a sheet of non-permeable base material having ink adhering thereto via a surface drying device for the sheet of non-permeable base material, the surface drying device comprising:
a loading port for loading the sheet of non-permeable base material with a liquid adhering surface having a liquid adhering to a surface thereof;
an air nozzle configured to spray high-temperature air onto the liquid adhering surface of the sheet of non-permeable base material loaded;
an unloading port for unloading the sheet of non-permeable base material;
an air shield zone forming portion, which is formed between the loading port and the unloading port, and the air shield zone forming portion is configured to form a heat-insulating air shield so as to cover the liquid adhering surface of the sheet of non-permeable base material;
a retained air exhaust portion, which is formed in the air shield zone forming portion, and the retained air exhaust portion is configured to exhaust retained air retained on the liquid adhering surface of the sheet of non-permeable base material to outside of the air shield zone forming portion via a Coanda effect, to thereby replace liquid adhering surface air on the liquid adhering surface of the sheet non-permeable base material;
and
a conduction and convection portion provided in the air shield zone forming portion, wherein the retained air exhaust portion is an exhaust portion configured to perform removal and replacement of a solvent that is evaporated and convected to a final portion of the air shield zone forming portion.