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:
Jul. 11, 2006
Filed:
Mar. 02, 2001
Koji Arai, Saitama, JP;
Koji Arai, Saitama, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
This invention discloses an image forming apparatus having an image reading function that can correct the density even when an image is formed based on data acquired from an apparatus other than an image reading apparatus, and a control method therefor. A printer controller () includes a PG unit () for generating a pattern having a predetermined density. The pattern is transmitted to an engine controller () via an output I/F to obtain a print result. Correction data representing the difference between a result obtained by reading the print result and a predetermined characteristic is received from a reader controller via a serial communication controller (). The correction data is stored in a data correction unit () and used for printing data subsequently received via an input I/F.