Printed matter displaying various colors according to view angle
US6450540B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Nov 15, 2000 |
| Grant date | Sep 17, 2002 |
| Priority date | — |
| Expiry date | Nov 15, 2020 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/1486
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A printed matter such as an advertisement material is provided. The printed matter includes a printing layer provided on a base plate and having various colors printed thereon such that half-tone dots of the respective colors are printed and overlap at a predetermined portion. A projection layer made of transparent epoxy resin or ultraviolet resin for covering only a particular portion of the printing layer intended to be emphasized, is formed on the printing layer. Also, a plurality of hemispherical protrusions made of transparent ultraviolet resin is formed on the projection layer using a screen printing method. The respective colors of the printing layer disposed beneath the hemispherical protrusions are refracted at different refraction angles to then be visually perceived. Thus, the colors, which are not visually perceived by naked eye, are made visible, thereby providing a three-dimensional effect to the printing layer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.