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.:

US 8421834 B1

PDF
Full Text
Expired
Date of Patent:
Apr. 16, 2013

Filed:

Mar. 25, 2010
Applicant:

Ichirou Miyagawa, Kanagawa, JP;

Inventor:

Ichirou Miyagawa, Kanagawa, JP;

Assignee:
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
B41J 2/447 (2006.01); B41J 2/455 (2006.01); B23K 26/36 (2006.01);
U.S. Cl.
CPC ...
Abstract

An exposure device engraves an image on the surface of a recording medium by scanning and exposing the recording medium with a light beam emitted from an exposure head. The exposure head comprises a light source for emitting a light beam, an exposure lens for causing the light beam to form an image on or close to the surface of the recording medium, a direction changer disposed upstream or downstream of the exposure lens in the direction in which the light beam travels, and/or inside of the exposure lens on the optical path of a light beam having a numerical aperture higher than a given numerical aperture to change the direction of the light beam having a numerical aperture higher than a given numerical aperture in such a manner as not to affect the process of engraving an image on a surface of the recording medium.


Find Patent Forward Citations

Miyagawa, Ichirou. (2013). Exposure device and engraving apparatus (U.S. Patent No. 8421834). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/8421834

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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