Ink concentration detecting method and ink jet recording...

Details Ink concentration detecting method and ink jet recording... Ink concentration detecting method and ink jet recording...

2007-02-27

2007-02-27

Meier, Stephen (Department: 2853)

Incremental printing of symbolic information

Ink jet

Controller

Reexamination Certificate

active

10995378

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.

REFERENCES:
patent: 6145954 (2000-11-01), Moore
patent: 6164760 (2000-12-01), Mizoguchi et al.
patent: 2834100 (1989-10-01), None

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