Ink set with near infrared detection capability and method of using the same
US8702220B2 · kind B2 · utility
1Cited by
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19Claims
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Key dates
| Filing date | Jul 31, 2009 |
| Grant date | Apr 22, 2014 |
| Priority date | — |
| Expiry date | Jan 12, 2030 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J2/175
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
An ink set with near infrared detection capability is disclosed. The ink set includes a cyan ink including a cyan colorant, a magenta ink including a magenta colorant, and a yellow ink including a yellow colorant, each of the colorants having maximum light absorbance in the visible wavelength range of about 400 to 750 nm, wherein each of the cyan, magenta and yellow inks includes a near infrared (NIR) absorbing pigment, which is different in spectral absorption characteristic from the colorant and absorbs light in the wavelength range of about 750 to 1200 nm.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.