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:
Dec. 12, 2006
Filed:
Aug. 06, 2002
Applicant:
Ming-chieh Chung, Taipei, TW;
Inventor:
Ming-Chieh Chung, Taipei, TW;
Assignee:
Teco Image Systems Co., Ltd., Taipei, TW;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04N 1/04 (2006.01);
U.S. Cl.
CPC ...
Abstract
A depth of field control device is provided. The depth of field control device is installed on an automatic document feeder having a scan glass surface. The depth of field control device comprises a plate member having at least one protrusion on its front side and a hook structure at its backside, wherein the hook structure at the backside of the plate member hooks the automatic document feeder and the protrusion is in contact with the scan glass surface; a reflection sheet attached to the plate member and fixed on the automatic document feeder; and a flexible device biasing the plate member at the backside of the plate member.