Reversible thermosensitive recording material

• US RE35,640 E
• Filed: 02/14/1994
• Issued: 10/21/1997
• Est. Priority Date: 10/06/1988
• Status: Expired due to Term

• Current Assignee: Ricoh Company Limited
• Original Assignee: Ricoh Company Limited
• Inventors: Hotta, Yoshihiko, Kawaguchi, Makoto, Kubo, Keishi, Nogiwa, Toru
• Primary Examiner(s): Schwartz, Pamela R.
• Application Number:
  US08/195,479
• Time in Patent Office: 1,345 Days
• Field of Search: 503/200, 503/208, 503/214, 503/217, 503/226
• US Class Current: 503/200
• CPC Class Codes: B41M 5/305 with reversible electron-donor electron-acceptor compositions
• CPC Class Codes: B41M 5/363 using materials comprising a polymeric matrix containing a low molecular weight organic compound such as a fatty acid, e.g. for reversible recording

Abstract

A reversible thermosensitive recording material is disclosed, which comprises (i) a reversible thermosensitive recording layer which comprises as the main components a matrix resin and an organic low-molecular-weight material dispersed in the matrix resin, and (ii) a light reflection layer made of a metal thin film, which is preferably surface-treated to have a specular gloss of 70 to 250% in accordance with JIS Z8741 or a surface roughness of 0.5 to 10 μm in terms of the ten-point average roughness defined in JIS B0601. This reversible thermosensitive recording material may further comprises a crystal-growth controlling agent in the reversible thermosensitive recording layer.

Claims