Profiling data spacing for different halftone states using a single tone reproduction curve
US9019561B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 9, 2014 |
| Grant date | Apr 28, 2015 |
| Priority date | — |
| Expiry date | Jun 9, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N1/52
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Methods and devices calibrate a printing device to develop a single calibration tone reproduction curve associated with a first halftone state for the printing device, and calculate a primary color profile for the first halftone state and secondary color profiles for the secondary halftone states available with the printing device based on a previously calculated relationship between the first halftone state and the secondary halftone states. Subsequently, these methods and devices receive a print job and such methods identify the secondary halftone state of the print job. With this, the methods and devices can identify a secondary color profile from the secondary color profiles that corresponds to the secondary halftone state and raster image process the print job using the secondary color profile to produce rasterized output. Then, these methods and devices print the rasterized output on print media using a print engine of the printing device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.