Reversible thermosensitive recording material and recording method and apparatus therefor
US6261992A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 24, 1999 |
| Grant date | Jul 17, 2001 |
| Priority date | — |
| Expiry date | Sep 24, 2019 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41M5/423
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A reversible thermosensitive recording material which includes a recording layer including an electron donating coloring agent and an electron accepting coloring developer and in which an image is reversibly formed and erased by appropriately heating and cooling the recording layer, wherein the recording layer further includes an erasure promoter including one or more secondary amide group having the following formulas (1), (2) or (3): ##STR1## wherein each of R1, R2, R3, R4 and R5 independently represents a hydrocarbon group which is optionally substituted and which may be saturated or unsaturated, and wherein R1 and R2 are optionally combined to form a ring which may include one or more of a nitrogen atom, an oxygen atom and a sulfur atom. Alternatively, the erasure promoter may include two or more secondary amide groups having formula (1), (2) or (3).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.