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. 26, 2014
Filed:
Jun. 01, 2011
Yuji Ieiri, Kanagawa, JP;
Yuji Ieiri, Kanagawa, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
A defective nozzle detector is included in an inkjet recording apparatus in which a plurality of nozzles to discharge droplets is provided and a recording head including the plurality of nozzles scans while moving in a main scanning direction, thereby forming an image. The defective nozzle detector includes a sensor board on which droplets are impacted from the nozzle of the recording head, a plurality of sensor electrodes and a common electrode alternately disposed on the sensor board and arranged in patterns that intersect the main scanning direction of the recording head, and an electrostatic capacitance sensor to detect changes in the electrostatic capacitance between the sensor electrode and the common electrode.