Method of forming color images
US4505749A · kind A · utility
27Cited by
3References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 24, 1983 |
| Grant date | Mar 19, 1985 |
| Priority date | — |
| Expiry date | Jun 24, 2003 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41M1/18
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
In a process for forming color images using more than one kind of color ink including black ink, the dyes in the color ink used have similar chromatographic characteristics. Preferably any difference of the Rf value of paper chromatography between any of the two dyes is not more than 0.30.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.