Methods and systems for using halftone screening for security markings and other graphics
US11516362B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Feb 14, 2022 |
| Grant date | Nov 29, 2022 |
| Priority date | — |
| Expiry date | Feb 14, 2042 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N2201/3233
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method for preparing a select graphic for printing using a digital printing device includes receiving the select graphic, at least one position for printing the select graphic, and a select spot color name for the select graphic, wherein the select spot color name represents a tone printable using at least one colorant of the digital printing device; generating a select spot color separation for the select graphic using a halftone screen to produce the tone represented by the security spot name, wherein the halftone screen is selected for printing the select graphic without a discernible dot pattern upon unmagnified viewing; and preparing raster data incorporating the select spot color separation for printing the select graphic at the at least one position on the item.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.