Methods of detecting and adjusting contact of a micro-structural fluid ejector to a substrate and method of detecting a fault condition in fluid flow from a micro-structural fluid ejector onto a substrate
US12202279B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 14, 2020 |
| Grant date | Jan 21, 2025 |
| Priority date | — |
| Expiry date | Feb 23, 2042 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P10/25
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
Methods are disclosed relating to the operation of a micro-structural fluid ejector in a fluid printing apparatus. The methods include providing an imaging system, capturing a digital image of the micro-structural fluid ejector and its surroundings, and pre-processing the digital image to detect edges. A method of detecting contact of a micro-structural fluid ejector to a substrate includes repeatedly lowering the print head and measuring the length of a detected edge until the currently measured length is determined to be longer than a previously measured length. A method of adjusting contact of a micro-structural fluid ejector to a substrate includes calculating a bending coefficient A of the micro-structural fluid ejector and lowering the print head toward the substrate if the bending coefficient A is less than a minimum threshold value Amin, raising the print head away from the substrate if the bending coefficient A is greater than a maximum threshold value Amax, and making no change to the vertical displacement of the print head if the bending coefficient A is in the range of Amin to Amax. A method of detecting a fault condition in fluid flow from a micro-structural fluid ejec…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.