Title:
OPTICAL REFLECTION FILM
Document Type and Number:
Japanese Patent JP2015230477
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide means of improving weatherability and suppressing generation of cracks in a hard coat layer of an optical reflection film having a dielectric multilayer film formed on one surface of a substrate and the hard coat layer formed on the other surface thereof.SOLUTION: An optical reflection film comprises a substrate, a dielectric multilayer film provided on one surface of the substrate and comprising alternately laminated low refractive index layers and high refractive index layers, and a hard coat layer provided on the other surface of the substrate. A sample of the optical reflection film cut to a size of 50 mm in a width direction and 3 mm in a longitudinal direction during manufacture and a sample cut to a size of 3 mm in the width direction and 50 mm in the longitudinal direction during manufacture both satisfy expressions (1) and (2) below, where a(1/m) represents a curl value measured after the samples are subjected to an environment with a temperature of 23°C and relative humidity of 50% for one hour, b(1/m) represents a curl value measured after the samples are subjected to an environment with a temperature of 23°C and relative humidity of 20% for one hour, and c(1/m) represents a curl value measured after the samples are subjected to an environment with a temperature of 23°C and relative humidity of 80% for one hour.
Inventors:
HATAZAWA SHOTA
HISAMITSU SATOSHI
KONUMA TARO
HISAMITSU SATOSHI
KONUMA TARO
Application Number:
JP2014118139A
Publication Date:
December 21, 2015
Filing Date:
June 06, 2014
Export Citation:
Assignee:
KONICA MINOLTA INC
International Classes:
G02B5/28; B32B7/02; G02B1/10; G02B5/22
Domestic Patent References:
| JP2013007815A | 2013-01-10 | |||
| JP2006030944A | 2006-02-02 | |||
| JP2012056220A | 2012-03-22 | |||
| JP2001310423A | 2001-11-06 | |||
| JP2003341006A | 2003-12-03 | |||
| JP2011020406A | 2011-02-03 |
Foreign References:
| EP2848595A1 | 2015-03-18 | |||
| WO2013077252A1 | 2013-05-30 | |||
| WO2010024274A1 | 2010-03-04 | |||
| WO2013105374A1 | 2013-07-18 |
Attorney, Agent or Firm:
Hatta International Patent Corporation
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