Invention Grant
- Patent Title: Thermal transfer sheet
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Application No.: US16333028Application Date: 2017-09-22
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Publication No.: US10744742B2Publication Date: 2020-08-18
- Inventor: Yoshimasa Kobayashi , Takao Otomaru
- Applicant: Dai Nippon Printing Co., Ltd.
- Applicant Address: JP Shinjuku-Ku
- Assignee: Dai Nippon Printing Co., Ltd.
- Current Assignee: Dai Nippon Printing Co., Ltd.
- Current Assignee Address: JP Shinjuku-Ku
- Agency: Burr & Brown, PLLC
- Priority: com.zzzhc.datahub.patent.etl.us.BibliographicData$PriorityClaim@8ca9d22
- International Application: PCT/JP2017/034289 WO 20170922
- International Announcement: WO2018/062038 WO 20180405
- Main IPC: B32B7/06
- IPC: B32B7/06 ; B32B27/08 ; B41M5/385 ; B41M5/44 ; B41M7/00 ; B41M5/382

Abstract:
A thermal transfer sheet including a dye layer and a transfer layer on a substrate. The transfer layer has a protective layer and an adhesive layer containing two or more resin components. One of the resin components is a copolymer of a reactive ultraviolet absorbing agent and an acrylic monomer. In the copolymer, the copolymerization ratio of the reactive ultraviolet absorbing agent is in the range of 10% or more and 50% or less on a molar ratio basis and the copolymerization ratio of the acrylic monomers is in the range of 50% or more and 90% or less on a molar ratio basis. The content of the copolymer of the reactive ultraviolet absorbing agent and the acrylic monomer is specified in the range of 50% by mass or more and 90% by mass or less on the basis of the total mass of the adhesive layer.
Public/Granted literature
- US20190224944A1 THERMAL TRANSFER SHEET Public/Granted day:2019-07-25
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