Multi-colored image recording method and thermosensitive image transfer sheet for use in the recording method
US4622565A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 30, 1985 |
| Grant date | Nov 11, 1986 |
| Priority date | — |
| Expiry date | Jan 30, 2005 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41M5/345
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A multi-colored image recording method capable of producing in repetition clear multi- and full-colored images having high density on a number of receiving sheets is disclosed, in which a thermosensitive image transfer sheet including four leuco dye layers respectively containing yellow, magenta, cyan and black leuco dyes that can be respectively colored in yellow, magenta, cyan and black, and a color developer layer containing a color developer capable of developing the leuco dyes in the four colors is superimposed on a receiving sheet and heat is applied to the thermosensitive image transfer sheet in accordance with the desired color tone information, whereby the leuco dyes and the color developer are transferred from the image transfer sheet onto the receiving sheet so as to selectively overlap the leuco dyes and the color developer, thereby producing multi-colored images by the coloring reaction therebetween.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.