JPS53149043A
Expired / Lapsed
JP
⏱️ 0.0 years remaining
Optical scanning for laser beam scanner
Assignee: Ricoh Co Ltd
•
Filing: 1977-05-31
•
Granted: —
•
Expires: 1997-05-31
Abstract
Abstract PURPOSE: To prevent a dot from being out of focus so as to obtain a clear recorded image by measuring the diameter of a laser beam, which is to be focused upon a surface to be scanned, so as to slightly shift a lens system in accordance with the variation in the beam diameter. COPYRIGHT: (C)1978,JPO&Japio
Inventors
- 👤 Iwao Hamaguchi
- 👤 Michio Umezawa
Bibliographic Details
Application Number
—
Jurisdiction
JP
Data Source
google_patents
Last Synchronized
2026-11-04 03:01
CPC Classifications
—
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.