Liquid-discharge-failure detecting apparatus and inkjet recording apparatus

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United States of America Patent

PATENT NO 7815280
SERIAL NO

12247614

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Abstract

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A liquid-discharge-failure detecting apparatus detects a liquid discharge failure. A light-emitting element emits a beam onto a droplet of liquid discharged from a liquid-droplet-discharge surface with an optical axis of the beam making a right angle with a direction in which the droplet is discharged. A light-receiving element receives a scattered light generated by scattering of the beam by the droplet. A failure detecting unit detects the liquid discharge failure from data of the scattered light received by the light-receiving element. A distance changing unit changes a distance between the liquid-droplet-discharge surface and the optical axis of the beam based on, for example, a diameter of the droplet.

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Patent Owner(s)

  • RICOH COMPANY, LTD.

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Hayashi, Hirotaka Nagoya, JP 125 1663
Ito, Kazumasa Tajimi, JP 127 1922

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