Dynamic information storage or retrieval – Specific detail of information handling portion of system – Radiation beam modification of or by storage medium
Patent
1989-10-10
1993-12-21
Shaw, Dale M.
Dynamic information storage or retrieval
Specific detail of information handling portion of system
Radiation beam modification of or by storage medium
369 4418, 369 97, G11B 712
Patent
active
052726894
ABSTRACT:
An optical head device for projecting a light beam on a recording medium to record data thereon or reproduce the recorded data comprises an optical system for forming a beam spot of a specified diameter on the surface of the recording medium, and a transparent contact member disposed at a light emanating portion of the system for the recording medium to come into direct sliding contact therewith. Accordingly, when the contact member moves relative to the recording medium, the dust adhering to the surface of medium is removed by the contact member to assure a recording or reproduction operation free of errors.
REFERENCES:
patent: 3980811 (1976-09-01), Schaefer et al.
patent: 4023033 (1977-05-01), Bricot
patent: 4293944 (1981-10-01), Izumita
patent: 4551827 (1985-11-01), Custer et al.
patent: 4812016 (1989-03-01), Miyata et al.
patent: 4886959 (1989-12-01), Hoshi et al.
patent: 4907846 (1990-03-01), Tustison et al.
patent: 4970707 (1990-11-01), Hara et al.
patent: 4998239 (1991-03-01), Strandjord et al.
"Organic Non-Linear Materials For Optics" p. 24 Table 1.2.1 CMC Co. Jul. 25, 1985.
Kume Minoru
Matsuura Kotaro
Tatezono Fumio
Tsujioka Tsuyoshi
Yamamoto Shigeaki
Sanyo Electric Co,. Ltd.
Shaw Dale M.
Tran Thai
LandOfFree
Optical head system with transparent contact member does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Optical head system with transparent contact member, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Optical head system with transparent contact member will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-313830