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:
Aug. 21, 2001
Filed:
Feb. 15, 2000
Masahiro Ohba, Kanagawa, JP;
Fuji Photo Film Co., Ltd., Kanagawa, JP;
Abstract
An image forming apparatus having a colorimeter for measuring density or color of an image, and capable of carrying out calibration with high accuracy. In the image forming apparatus, a test image, and a first reference line and a second reference line for defining a position of the test image on an image receiving paper, are exposed and formed on a photosensitive material. The first reference line and the second reference line formed on the image receiving paper are detected by a reflective photosensor so that a position at which the test image is formed on the image receiving paper is automatically determined. As a result, test image data, which is stored in advance in the image receiving apparatus, and a measurement position, at which measurement is carried out by a colorimetry apparatus, can be made to correspond to each other accurately. Further, the colorimetry apparatus is built-in into the image forming apparatus, thus allowing a series of operations needed for calibration to be performed automatically.