LIQUID DROPLET IMAGING DEVICE

To provide a liquid droplet imaging device capable of sequentially imaging liquid droplets discharged from many arranged nozzles at high speed.SOLUTION: A liquid droplet imaging device comprises: a camera 2 which images a Y-axis direction as an imaging direction, the Y-axis direction being orthogona...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: MIHARA KENTARO, KANAMORI HAJIME
Format: Patent
Sprache:eng ; jpn
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Beschreibung
Zusammenfassung:To provide a liquid droplet imaging device capable of sequentially imaging liquid droplets discharged from many arranged nozzles at high speed.SOLUTION: A liquid droplet imaging device comprises: a camera 2 which images a Y-axis direction as an imaging direction, the Y-axis direction being orthogonal to an X-axis direction; an X-axis moving unit 3 for relatively moving the camera 2 to nozzles 11; and a Y-axis moving unit 4 for relatively moving the camera 2 to the nozzle 11. An area where the camera 2 images liquid droplets D discharged from a plurality of nozzles 11 as imaging subject is divided into a plurality of imaging sections in the X-axis direction. In each imaging section, tan array of the nozzles 11 is segment approximated as a nozzle approximating segment. During an imaging operation, the X-axis moving unit 3 relatively moves the camera 2 at first speed over all imaging sections, and the Y-axis moving unit 4 relatively moves the camera 2 at a constant speed so that a focal point of the camera 2 moves according to the nozzle approximating segment in each imaging section.SELECTED DRAWING: Figure 4 【課題】多数配列されたノズルから吐出される液滴を順番に高速で撮像することができる液滴撮像装置を提供する。【解決手段】X軸方向と直交するY軸方向を撮像方向とするカメラ2と、ノズル11に対してカメラ2をX軸方向に相対移動させるX軸移動部3と、ノズル11に対してカメラ2をY軸方向に相対移動させるY軸移動部4と、を備え、カメラ2が撮像対象である複数のノズル11の液滴Dを撮像する領域は、X軸方向に複数の撮像区分に分割され、それぞれの撮像区分において、ノズル11の配列がノズル近似線分として線分近似され、撮像動作中、X軸移動部3は、全ての撮像区分にわたってカメラ2を第1の速度で相対移動させ、Y軸移動部4は、各撮像区分において、ノズル近似線分にしたがってカメラ2の焦点が移動するよう、カメラ2を等速で相対移動させる。【選択図】図4