Incremental printing of symbolic information – Ink jet – Controller
Reexamination Certificate
2006-12-07
2009-06-09
Nguyen, Lamson D (Department: 2861)
Incremental printing of symbolic information
Ink jet
Controller
Reexamination Certificate
active
07543904
ABSTRACT:
A nozzle inspection device50includes: an inspection area52that is provided inside a capping member41and is capable of receiving ink; a voltage application circuit53that applies voltage to a print head24to generate a predetermined potential difference between the print head24and the inspection area52; and a switching module53athat is switched between the ground side where a nozzle plate has ground potential and the voltage-application side where the nozzle plate is independent from ground potential and voltage is applied to the print head. During a nozzle inspection to determine whether or not ink can be ejected from nozzles23on the basis of voltage variations in the inspection area52, a CPU72switches the switch53ato the voltage-application side. During printing, the CPU72switches the switch53to the ground side. In this structure, the print head is free from electrical impact during printing, and the head can be at a predetermined potential during a nozzle inspection.
REFERENCES:
patent: 6517197 (2003-02-01), Hawkins et al.
patent: 2007/0070110 (2007-03-01), Kim
patent: 2007/0139460 (2007-06-01), Araki
patent: 59-178256 (1984-10-01), None
Nguyen Lamson D
Seiko Epson Corporation
Sughrue & Mion, PLLC
LandOfFree
Print head inspection method, print head inspection device... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Print head inspection method, print head inspection device..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Print head inspection method, print head inspection device... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4088226