Incremental printing of symbolic information – Ink jet – Controller
Reexamination Certificate
2005-12-12
2009-11-24
Luu, Matthew (Department: 2861)
Incremental printing of symbolic information
Ink jet
Controller
C347S067000, C347S081000, C347S054000, C347S009000
Reexamination Certificate
active
07621616
ABSTRACT:
A recording head includes an ink-discharging surface and nozzles. The ink-discharging surface is provided with ink-discharging ports of the nozzles. A light-emitting element and a light-receiving element are disposed opposite each other close to the ink-discharging surface. The light-receiving element outputs a detection signal. A reflector is provided on the ink-discharging surface and reflects light emitted from the light-emitting element toward the light-receiving element. One of the nozzles is driven and whether the nozzle discharges an ink drop is checked on the basis of change in the detection signal due to interception of the reflected light by the ink drop. If the nozzle discharges an ink drop, then whether the nozzle discharges the ink drop in an appropriate direction is checked on the basis of change in the detection signal due to interception of the direct light by the ink drop.
REFERENCES:
patent: 6305777 (2001-10-01), Lee
patent: 6726318 (2004-04-01), Arakawa
patent: 2002/0186268 (2002-12-01), Endo et al.
patent: 2005/0078138 (2005-04-01), Koyama
patent: 11-192709 (1999-07-01), None
patent: 11192709 (1999-07-01), None
patent: 2003-276171 (2003-09-01), None
Mitani Yasutaka
Tsujimoto Takuya
Unosawa Yasuhiro
Yamamoto Tadashi
Canon Kabushiki Kaisha
Canon USA Inc IP Div
Legesse Henok
Luu Matthew
LandOfFree
Ink jet recording apparatus and method and program for... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Ink jet recording apparatus and method and program for..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Ink jet recording apparatus and method and program for... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4138684