Optical read card and its manufacture

Abstract

Abstract PURPOSE:To attain mass-production by adhering an optical reading medium having a reflecting face recording information depending on the presence of an optical reflecting face and forming the presence of the optical reflecting face by the resist lift method onto a card substrate to form quickly the uneveness of the optical reflecting face. CONSTITUTION:A resist 11 is subjected to spin coating on a substrate 4. A mask 12 having a pattern comprising data pits and guide tracks is adhered closely onto the resist 11, exposed to develop the resist 11 thereby completing the transfer of the pattern onto the resist 11, and the uneveness corresponding to the data pits and guide tracks is formed to the resist 11. After an optical reflecting member 5a is vapor-deposited from on the resist 11, the resist 11 is lifted off to constitute an optical reflection layer 5, and the optical reading medium 3 is finished. An adhesives 8 is coated on the optical reflecting layer 5 of the optical reading medium 3 and the optical reading medium 3 is adhered to one side of the card substrate 2 or, as required, on both sides.

Inventors

• 👤 Minoru Fujita
• 👤 実 藤田
• 👤 Takashi Sato
• 👤 尚 佐藤

Bibliographic Details