Display material on which laser printing has been carried out and packaging employing same
AssigneeToyobo Co., Ltd.
InventorsShintaro Ishimaru, Masayuki Haruta
Life of this patent
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Abstract
[PROBLEM] To provide a packaging and a display material which permit printing in distinct fashion by a laser, and which are of high transparency. [SOLUTION MEANS] A display material having at least one layer permitting printing as a result of laser irradiation, the display material being such that the printing occurs due to change in color caused by the laser irradiation in at least one region of said layer; when a digital microscope is used to carry out cross-sectional observation of said printed region and a nonprinted region, a significant difference in at least any one of RGB values indicating color elements is observed; and thickness of said printed region is not less than 5 μm but not greater than 200 μm.
Claims6
A display material having at least one layer permitting printing as a result of laser irradiation, the display material being such that the printing occurs due to change in color caused by the laser irradiation in at least one region of said layer;
- when a digital microscope is used to carry out cross-sectional observation of said printed region and a nonprinted region, a significant difference in at least any one of RGB values indicating color elements is observed;
- thickness of said printed region is not less than 5 μm but not greater than 200 μm;
- and the at least one layer permitting printing as a result of laser irradiation is a stretched film layer.
Dependencies are inferred from the claim text.