Reversible recording medium, reversible recording medium coating, and exterior member

Patent metadata

Field	Value
Publication number	US-11590787-B2
Application number	US-201716349822-A
Country	US
Kind code	B2
Filing date	Oct 17, 2017
Priority date	Nov 17, 2016
Publication date	Feb 28, 2023
Grant date	Feb 28, 2023

Abstract

A reversible recording medium of an embodiment of the disclosure includes a support base, and a recording layer provided on the support base and reversibly changing between a recorded state and a deleted state. The recording layer includes a photothermal conversion material including one or more of a compound having a phthalocyanine skeleton, a compound having a squarylium skeleton, a compound having a cyanine skeleton including, in a molecule, one or both of a counter ion of SbF6, PF6, BF4, ClO4, CF3SO3 and (CF3SO3)2N and a methine chain containing a five-membered ring or a six-membered ring, and an inorganic compound; a coloring compound having an electron-donating property; and a color developing/quenching agent having an electron-accepting property and including at least one salicylic acid compound represented by the general formula (1) and including a linear hydrocarbon group having 25 to 34 carbon atoms via a linking group containing an amide moiety.

First claim

The invention claimed is:

1. A reversible recording medium comprising:
a support base; and
a recording layer provided on the support base and reversibly changing between a recorded state and a deleted state,
the recording layer including
a photothermal conversion material including one or more of a compound having a phthalocyanine skeleton, a compound having a squarylium skeleton, a compound having a cyanine skeleton that includes, in a molecule, one or both of a counter ion of one of SbF 6 , PF 6 , BF 4 , ClO 4 , CF 3 SO 3 and (CF 3 SO 3 ) 2 N and a methine chain containing a five-membered ring or a six-membered ring, and an inorganic compound, and
a mixture of three types of microcapsules including respective coloring compounds to be colored differently from one another and respective color developing/quenching agents corresponding to the respective coloring compounds, wherein the respective coloring compounds each comprise a coloring compound having an electron-donating property, and wherein the respective color developing/quenching agents each comprise a color developing/quenching agent having an electron-accepting property and including at least one compound represented by a following general formula (1):

where X is one of —NHCO—, —CONH—, —NHCONH—, —CONHCO—, —NHNHCO—, —CONHNH—, —CONHNHCO—, —NHCOCONH—, —NHCONHCO—, —CONHCONH—, —NHNHCONH—, —NHCONHNH—, —CONHNHCONH—, —NHCONHNHCO— and —CONHNHCONH—, and R is a linear hydrocarbon group having 29 to 34 carbon atoms.

2. The reversible recording medium according to claim 1 , wherein the photothermal conversion material has an absorption peak wavelength in a range from 700 nm to 2,000 nm.

3. The reversible recording medium according to claim 1 , wherein the recording layer further includes a thermosetting resin or a thermoplastic resin.

4. The reversible recording medium according to claim 1 , wherein irradiation can be performed with a near infrared ray in a predetermined wavelength region to perform recording into the recording layer and deletion of the recording.

5. The reversible recording medium according to claim 1 , wherein irradiation can be performed with a semiconductor laser to perform recording into the recording layer and deletion of the recording.

6. The reversible recording medium according to claim 1 , wherein
the coloring compound being represented by the following general formula (2):

where R1 and R2, each independently, denote a phenyl group, an aminophenyl group, an indolyl group, a benzoindolyl group, a quinoline group, a naphthalene group, or an alkyl group, or a derivative thereof, or alternatively may be bonded to each other via carbon (C), nitrogen (N), oxygen (O), and sulfur (S) to form a condensed aliphatic ring or a condensed aromatic ring.

7. An exterior member having at least one surface provided with a reversible recording medium,
the reversible recording medium comprising:
a support base; and
a recording layer provided on the support base and reversibly changing between a recorded state and a deleted state,
the recording layer including
a photothermal conversion material including one or more of a compound having a phthalocyanine skeleton, a compound having a squarylium skeleton, a compound having a cyanine skeleton that includes, in a molecule, one or both of a counter ion of one of SbF 6 , PF 6 , BF 4 , ClO 4 , CF 3 SO 3 and (CF 3 SO 3 ) 2 N and a methine chain containing a five-membered ring or a six-membered ring, and an inorganic compound, and
a mixture of three types of microcapsules including respective coloring compounds to be colored differently from one another and respective color developing/quenching agents corresponding to the respective coloring compounds, wherein the respective coloring compounds each comprise a coloring compound having an electron-donating property, and wherein the respective color developing/quenching agents each comprise a color developing/quenching agent having an electron-accepting property and including at least one compound represented by a following general formula (1):

where X is one of —NHCO—, —CONH—, —NHCONH—, —CONHCO—, —NHNHCO—, —CONHNH—, —CONHNHCO—, —NHCOCONH—, —NHCONHCO—, —CONHCONH—, —NHNHCONH—, —NHCONHNH—, —CONHNHCONH—, —NHCONHNHCO— and —CONHNHCONH—, and R is a linear hydrocarbon group having 29 to 34 carbon atoms.

Assignees

• Sony Corp

Inventors

• Shuto Aya
• Kurihara Kenichi
• Kaino Yuriko

Classifications

• B41M5/305 Primary

  with reversible electron-donor electron-acceptor compositions · CPC title

• B41M5/46 Primary

  characterised by the light-to-heat converting means; characterised by the heat or radiation filtering or absorbing means or layers · CPC title

• B41M5/3375

  Non-macromolecular compounds · CPC title

• B41M5/3275

  Fluoran compounds · CPC title

• B41M5/41

  Base layers {supports or substrates} · CPC title