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:
Apr. 13, 1999
Filed:
Oct. 14, 1997
Hiroyuki Hotta, Ashigarakami-gun, JP;
Seigo Makida, Ashigarakami-gun, JP;
Yoshihiko Sakai, Ashigarakami-gun, JP;
Hisao Ito, Ashigarakami-gun, JP;
Fuji Xerox Co., Ltd., Tokyo, JP;
Abstract
A specific reflection area 42 on a paper surface 37a is irradiated with light from a light source 41 via nor not via a lens 43. A photoelectric conversion element 44 is placed on a focal surface in the rearward of the lens 43 and out of the light reflected (including scattering light and diffusion light) from the reflection area 42 on the paper surface 37a, only the whole light reflected within a predetermined angular range is received by the photoelectric conversion element 44 via the lens 43. The density of the image formed on the paper surface 37a is measured from the light reception output. When the paper surface 37a is irradiated with light from the light source 41 via the lens 43, the light source 41 is placed backward from the focal surface 43b in the rearward of the lens 43.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile