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.

Date of Patent:
Mar. 22, 2016

Filed:

Feb. 15, 2012
Applicants:

Mamoru Yorimoto, Kanagawa, JP;

Tatsuhiko Okada, Saitama, JP;

Daisaku Horikawa, Saitama, JP;

Makoto Moriwaki, Kanagawa, JP;

Inventors:

Mamoru Yorimoto, Kanagawa, JP;

Tatsuhiko Okada, Saitama, JP;

Daisaku Horikawa, Saitama, JP;

Makoto Moriwaki, Kanagawa, JP;

Assignee:

Ricoh Company, Ltd, Tokyo, JP;

Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06K 15/10 (2006.01); B41J 29/38 (2006.01);
U.S. Cl.
CPC ...
B41J 29/38 (2013.01);
Abstract

An image forming apparatus which reads a test pattern formed by ejecting liquid droplets onto a recording medium to adjust an ejection timing of the liquid droplets is disclosed. The image forming apparatus includes an image forming unit; a reading unit; a relative movement unit; an intensity data obtaining unit which obtains intensity data on a reflected light which is received from a scanning position of a light by a light receiving unit while the light moves over the test pattern; and a position detection unit which applies a line position determining operation on the intensity data in the vicinity of a point of inflection included between an upper-limit threshold value and a lower-limit threshold value, and detects a position of a line.


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