Ink concentration detecting method and ink jet recording apparatus
US7182420B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Nov 24, 2004 |
| Grant date | Feb 27, 2007 |
| Priority date | — |
| Expiry date | Sep 24, 2025 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J2/195
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
An ink concentration detecting method and recording apparatus cause one of a cleaning liquid and ink of known ink concentration to flow through an ink passage through which the ink is to flow, detect a first ink concentration in the ink passage in an operation state in which ink of predetermined ink concentration flows through the ink passage, and detect a second ink concentration in the ink passage after the cleaning liquid is caused to flow through the ink passage to clear the ink passage or in a state in which the ink of known ink concentration is caused to flow through the ink passage. The method and apparatus detect ink concentration in the ink passage in the operation state based on the first ink concentration and the second ink concentration. Precise ink concentration of the ink to be supplied to an ink jet head is obtained.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.