Droplet inspection module and droplet inspection method
US11338578B2 · kind B2 · utility
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10Claims
0Family size
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Key dates
| Filing date | Oct 23, 2020 |
| Grant date | May 24, 2022 |
| Priority date | — |
| Expiry date | Dec 12, 2040 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10K71/135
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
An inspection module is disclosed for inspecting a droplet from an ink jet head. The inspection module includes a sensor located under the ink jet head and measuring a distance between the droplet and the sensor in real time; a variable lens changing an operating distance based on the measured distance of the sensor; and a camera for capturing an image of the droplet. The inspection module further includes a droplet inspecting part inspecting the droplet image captured by the camera.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.