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    • 10. 发明申请
    • LIQUID-DISCHARGE-FAILURE DETECTING APPARATUS AND INKJET RECORDING APPARATUS
    • 液体放电故障检测装置和喷墨记录装置
    • US20090091595A1
    • 2009-04-09
    • US12247614
    • 2008-10-08
    • Hirotaka HAYASHIKazumasa Ito
    • Hirotaka HAYASHIKazumasa Ito
    • B41J29/38
    • B41J2/2142
    • 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.
    • 液体排出故障检测装置检测液体排出故障。 发光元件将光束发射到从液滴喷射表面排出的液滴上,其中光束的光轴与液滴的排出方向成直角。 光接收元件接收由液滴散射光产生的散射光。 故障检测单元根据由受光元件接收的散射光的数据来检测液体排出故障。 距离改变单元基于例如液滴的直径来改变液滴排出表面和光束的光轴之间的距离。