JPS6451978A - Recording material - Google Patents
Recording materialInfo
- Publication number
- JPS6451978A JPS6451978A JP63071032A JP7103288A JPS6451978A JP S6451978 A JPS6451978 A JP S6451978A JP 63071032 A JP63071032 A JP 63071032A JP 7103288 A JP7103288 A JP 7103288A JP S6451978 A JPS6451978 A JP S6451978A
- Authority
- JP
- Japan
- Prior art keywords
- fluorene derivative
- recording material
- electron
- compound
- developed
- 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
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M5/00—Duplicating or marking methods; Sheet materials for use therein
- B41M5/26—Thermography ; Marking by high energetic means, e.g. laser otherwise than by burning, and characterised by the material used
- B41M5/30—Thermography ; Marking by high energetic means, e.g. laser otherwise than by burning, and characterised by the material used using chemical colour formers
- B41M5/323—Organic colour formers, e.g. leuco dyes
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Heat Sensitive Colour Forming Recording (AREA)
Abstract
PURPOSE:To provide a recording material which has favorable color forming properties, raw preservability and stability of developed color images and in which a developed color part has light absorption in a near infrared region, by incorporating a fluorene derivative having a substituted amino group at a specified position and an electron-acceptive compound. CONSTITUTION:A fluorene derivative having substd. amino groups at 3- and 5-positions or at 2- and 6-positions and an electron-acceptive compound are incorporated in a recording material. The fluorene derivative can be synthesized by several methods, e.g., a method wherein 2,6(or 3,5)-diaminofluorenone is alkylated to form a 2,6(or 3,5)-disubstd.-aminofluorenone, which is subjected to dehydration condensation with a dialkylaminobenzoic acid or the like to obtain the fluorene derivative. The fluorene derivative may be used in combination with other electron-donative colorless dye, e.g., a triphenylmethane phthalide compound or a fluoran compound, and it is preferable to use two kinds of such dyes which give a black hue. In the recording material, a developed color part has light absorption in a near infrared region and a sufficient developed color density, and the coloring matter developed into color is extremely stable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63071032A JPS6451978A (en) | 1987-04-01 | 1988-03-25 | Recording material |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8008587 | 1987-04-01 | ||
| JP63071032A JPS6451978A (en) | 1987-04-01 | 1988-03-25 | Recording material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6451978A true JPS6451978A (en) | 1989-02-28 |
Family
ID=26412145
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63071032A Pending JPS6451978A (en) | 1987-04-01 | 1988-03-25 | Recording material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6451978A (en) |
-
1988
- 1988-03-25 JP JP63071032A patent/JPS6451978A/en active Pending
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