| 摘要 |
PROBLEM TO BE SOLVED: To provide a laser marking method on a packaging film which displays printed letters of a pack date and a manufacturer symbol on a packaging bag to be easily read without changing an outer surface of a product, and prints the letters of the date and manufacturer symbol by displaying in a way that even elderly people can understand information about food, and to provide a package.SOLUTION: A laser marking method applies a laser beam to a while ink layer which uses titanium oxide sandwiched by films as a colorant so that the layer is turned into black, and uses fonts which include original letters and slanted letters in an oblique direction so that lines can look bold when reading marking letters, and also include slanted letters in which laser beam is not reapplied to black parts of the original letters. |
