Inkjet printing apparatus and control method of inkjet printing apparatus
US10843480B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 8, 2019 |
| Grant date | Nov 24, 2020 |
| Priority date | — |
| Expiry date | Feb 8, 2039 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J29/38
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
An inkjet printing apparatus includes: a print head provided with an ejection opening surface; a tank; a supply flow path; a collection flow path; an intra-tank vacuum pump to reduce pressure inside the tank; and a control unit. The control unit performs a first operation and a second operation, the first operation causing the intra-tank vacuum pump to operate while a collection drive valve is closed, so as to pull out ink in a flow path which extends from the ejection opening to the supply flow path into the tank, the second operation causing the intra-tank vacuum pump to operate while a supply drive valve is closed, so as to pull out ink in a flow path which extends from the ejection opening to the collection flow path into the tank.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.