JPS64188A - Color-forming composition - Google Patents
Color-forming compositionInfo
- Publication number
- JPS64188A JPS64188A JP62298098A JP29809887A JPS64188A JP S64188 A JPS64188 A JP S64188A JP 62298098 A JP62298098 A JP 62298098A JP 29809887 A JP29809887 A JP 29809887A JP S64188 A JPS64188 A JP S64188A
- Authority
- JP
- Japan
- Prior art keywords
- color
- dye
- forming
- ketal
- acetal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Heat Sensitive Colour Forming Recording (AREA)
Abstract
PURPOSE: To prepare a color-forming composition which has excellent shelf stability and good color stability and provides excellent coloration, by combining a color-forming dye with a color developer comprising a ketal or acetal of L-ascorbic or D-erysorbic acid.
CONSTITUTION: The title composition is prepared by combining a color-forming dye with a color developer comprising L-ascorbic acid 5,6-O-ketal or 5,6-O-acetal, or D-erysorbic acid 5,6-O-ketal or 5,6-O-acetal. An example of the color-forming dye is a dye generally called leuco dye. This color-forming composition can be used for a thermal recording medium such as heat-sensitive paper, or for a pressure-sensitive recording medium such as pressure-sensitive copying paper.
COPYRIGHT: (C)1989,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62-298098A JPH01188A (en) | 1986-11-27 | 1987-11-26 | coloring composition |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP28395286 | 1986-11-27 | ||
JP61-283952 | 1986-11-27 | ||
JP62-29999 | 1987-02-12 | ||
JP62-298098A JPH01188A (en) | 1986-11-27 | 1987-11-26 | coloring composition |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS64188A true JPS64188A (en) | 1989-01-05 |
JPH01188A JPH01188A (en) | 1989-01-05 |
Family
ID=
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH04216094A (en) * | 1990-12-14 | 1992-08-06 | Ricoh Co Ltd | Electron accepting color developer and thermal recording method |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH04216094A (en) * | 1990-12-14 | 1992-08-06 | Ricoh Co Ltd | Electron accepting color developer and thermal recording method |
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