Printing apparatus and determination method
US10735621B2 · kind B2 · utility
0Cited by
3References
19Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 28, 2019 |
| Grant date | Aug 4, 2020 |
| Priority date | — |
| Expiry date | Feb 28, 2039 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N2201/0094
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A reflected light amount from a patch under a first light source is acquired, and a reflected light amount from the patch under a second light source whose wavelength band is different from the first light source is acquired. The type of a printing medium on which the patch is printed is determined based on the ratio of the two acquired reflected light amounts.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.