Negative pressure recovery of printing agents
US11427012B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 4, 2018 |
| Grant date | Aug 30, 2022 |
| Priority date | — |
| Expiry date | Dec 4, 2038 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J2/17596
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
An example printing apparatus includes a reservoir to contain a printing agent. The printing apparatus further includes a recovery port to receive connection of a recovery vessel and to communicate flow of the printing agent from the reservoir to the recovery vessel during a recovery operation. The printing apparatus further includes a recovery pump to pump the printing agent from the reservoir through the recovery port to the recovery vessel during the recovery operation. The printing apparatus further includes a vacuum pump at the reservoir to reduce pressure in the reservoir to below atmospheric pressure during the recovery operation to draw unrecovered printing agent away from the recovery port when the recovery vessel is removed from the recovery port.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.