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:
Jul. 28, 1998
Filed:
May. 30, 1997
Ushiodenki Kabushiki Kaisha, Tokyo, JP;
Dainippon Ink and Chemicals, Incorporated, Tokyo, JP;
Abstract
To cement UV radiation-transmitting substrates to one another without deformation and within a short time, and to cement them together with high efficiency without an aluminum film of an information recording layer melting, according to the invention, a device for bonding discs to one another is provided having a radiant light source which irradiates the discs with radiant light which contains ultraviolet radiation at least once in a flash; a wavelength selector which is placed in the optical path between the radiant light source and the discs at a distance from the discs, which transmits the ultraviolet rays and absorbs light in a range of wavelengths which are absorbed by the UV radiation-transmitting substrates of the discs; a cooling device which admits and discharges cooling air between the radiant light source and the wavelength selector.