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. 23, 2002
Filed:
Dec. 24, 1998
Kimiyuki Hayasaki, Yokohama, JP;
Koji Yamakawa, Yokohama, JP;
Tsuyoshi Orikasa, Musashimurayama, JP;
Hiroyuki Kigami, Ebina, JP;
Hisashi Fukai, Yokohama, JP;
Takayuki Ono, Kawasaki, JP;
Masayoshi Okawa, Kawasaki, JP;
Satoshi Kudo, Yokohama, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
A method for correcting a recording head is provided to solve the problems of density unevenness in recorded images. The density comparison is made with the reference density for a predetermined unit in the density distribution of an image recorded by the application of n kinds of signals. Then, one of the n kinds of signals which is close to the reference density is selected. The properties of the signal thus selected are transmitted to the recording head together with the correction data, hence correcting density unevenness.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile