Three-dimensional printer, three-dimensional image forming method, and three-dimensional image

摘要

When a heat capacity of a recording medium having a base material coated with a foamable resin layer is larger than a normal heat capacity, to form a raised amount equal to that with the normal case with a normal heating quantity, a turned mirror image of the image is generated. The image is transferred onto the front face of the recording medium and fixed. The recording medium is reversed, and conveyed again to the transfer part. The turned mirror image is transferred onto the rear face of the recording medium and fixed. The recording medium is heated with the heat quantity equal to that in the normal case, and combination of heat absorbed by the turned minor image and heat absorbed by the image is transmitted to the foamable resin layer to expand the foamable resin layer.

主权项

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.