Ejection inspecting device, printing device, and ejection...

Details Ejection inspecting device, printing device, and ejection... Ejection inspecting device, printing device, and ejection...

2011-07-19

2011-07-19

Nguyen, Thinh H (Department: 2861)

Incremental printing of symbolic information

Ink jet

Controller

C347S081000

Reexamination Certificate

active

07980653

ABSTRACT:
An ejection inspecting device which inspects an ejection state of an ejection head, including nozzles ejecting fluid, includes fluid receiving areas corresponding to the ejection head so as to receive the fluid ejected from the nozzles. A potential difference generating unit generates predetermined potential differences between the ejection head and the fluid receiving areas. Electrical variation detecting units detect electrical variations of the fluid receiving areas. A control unit drives the ejection head to eject the fluid to the fluid receiving areas from the nozzles in a state in which the predetermined potential differences are generated between the ejection head and the fluid receiving areas by the potential difference generating unit. The ejection inspecting device also inspects the nozzles to determine whether the fluid is ejected from the nozzles on the basis of the detection results of the electrical variation detecting units in the fluid receiving areas.

REFERENCES:
patent: 2010/0165034 (2010-07-01), DeVore et al.
patent: 59-123673 (1984-07-01), None

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