The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 16, 2011
Filed:
Jan. 30, 2008
Takashi Kobayashi, Fujinomiya, JP;
Katsuyoshi Suzuki, Fujinomiya, JP;
Takashi Kobayashi, Fujinomiya, JP;
Katsuyoshi Suzuki, Fujinomiya, JP;
Fujifilm Corporation, Tokyo, JP;
Abstract
A first adhesion layer and a second adhesion layer are formed on a base material formed of polyester biaxially stretched in this order from the side of the base material. Additionally, a hard coat layer and an antireflection layer are formed on the second adhesion layer to form a multilayer film. When refractive indices of the base material, the first adhesion layer, the second adhesion layer, and the hard coat layer are η1, η2, η3, and η4, respectively, the refractive indices are adjusted so as to satisfy the following formulae (1) to (3) to prevent rainbow unevenness.(η1/η4)×0.95≦η2/η3≦(η1/η4)×1.05  (1)η1<η4  (2)η2<η3  (3) The two adhesion layers can enhance the adhesive strength with the base material.