Printing apparatus and concentration correction method
US10661578B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 13, 2018 |
| Grant date | May 26, 2020 |
| Priority date | — |
| Expiry date | Dec 13, 2038 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J2202/21
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A printing apparatus which includes a circulation route configured to supply ink stored in a storage unit to a print head via a supply passage and send back the ink collected from the print head to the storage unit via a collection passage and which performs printing on a print medium by ejecting the ink from the print head includes: a first detection unit which detects an ink concentration in the collection passage; an injection unit which injects a correcting liquid capable of correcting the ink concentration into a circulated ink flow downstream of a position where the first detection unit detects the concentration in the collection passage; and a control unit which obtains an injection amount of the correcting liquid based on the concentration detected by the first detection unit and controls the injection unit such that the correcting liquid is injected in the injection amount.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.