Patent ID: 9162486
Filing Date: 2015-10-20
Classification: B29C,B41J,B41M

Abstract:
1. A three-dimensional printer comprising: a first printed image forming unit configured to form a first printed image on one face of a thermally expandable sheet in which a thermally expandable layer is formed; a second printed image forming unit configured to form a second printed image on the other face of the thermally expandable sheet, the second printed image having a certain density, and the certain density increasing in accordance with an increase of a thermal capacity of the thermally expandable sheet; and a heat applying and expanding unit configured to apply thermal energy to the thermally expandable sheet to expand the thermally expandable layer; wherein the second printed image forming unit forms the second printed image so as to have the certain density at both a third part and a fourth part of the second printed image, the third part of the second printed image corresponding to a first part of the first printed image, the first part of the first printed image having a first density, the fourth part of the second printed image corresponding to a second part of the first printed image, and the second part of the first printed image having a second density lower than the first density.