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:
May. 21, 2019
Filed:
Jun. 15, 2018
Canon Kabushiki Kaisha, Tokyo, JP;
Ryuichi Araki, Matsudo, JP;
CANON KABUSHIKI KAISHA, Tokyo, JP;
Abstract
An image forming apparatus is capable of switching thresholds for deciding a color registration amount from a pattern image. A controller controls image forming units to form first and second color patterns of different colors on a rotational image bearing member. The second color pattern is formed at an upstream side of the first color pattern in a rotational direction of the image bearing member. The controller controls a sensor to detect the color patterns. A comparator compares a detection result by the sensor with a threshold, and outputs an output value according to a comparison result. The controller controls the color registration according to the output value. The controller sets a second threshold for the second color pattern based on an edge timing of the output value from the comparator according to the comparison result between the detection result about the first color pattern and a first threshold.