Test apparatus
US12030311B2 · kind B2 · utility
0Cited by
4References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 16, 2021 |
| Grant date | Jul 9, 2024 |
| Priority date | — |
| Expiry date | May 26, 2041 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J2029/3935
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The disclosure concerns a test apparatus comprising a drum (100) configured such that ink drops (200) deposited on the surface of the drum form a printed marking (210) on the surface of the drum. The test apparatus further comprises an ink removal unit (300) configured to remove ink from the surface of the drum. The drum is at least partially transmissive of light and a light source (800) is disposed inside the drum to controllably illuminate the drum.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.