Ink jet break-off length measurement apparatus and method

Incremental printing of symbolic information – Ink jet – Ejector mechanism

Reexamination Certificate

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

Reexamination Certificate

active

07434919

ABSTRACT:
A jet break-off length measurement apparatus for a continuous liquid drop emission system is provided. The jet break-off length measurement apparatus comprises a liquid drop emitter containing a positively pressurized liquid in flow communication with at least one nozzle for emitting a continuous stream of liquid. Heater resistor apparatus is adapted to transfer pulses of thermal energy to the liquid in flow communication with the at least one nozzle sufficient to cause the break-off of the at least one continuous stream of liquid into a stream of drops of predetermined volumes. A sensing apparatus adapted to detect the stream of drops of predetermined volumes is provided. A control apparatus is adapted to determine a characteristic of the stream of drops of predetermined volumes that is related to the break-off length. Further apparatus is adapted to inductively charge at least one drop and to cause electric field deflection of charged drops. Jet stimulation apparatus comprising a plurality of transducers corresponding to the plurality of nozzles and adapted to transfer pulses of energy to the liquid sufficient to cause the break-off of the plurality of continuous streams of liquid into a plurality of streams of drops of predetermined volumes is also disclosed. Methods of measuring the jet break-off length using phase sensitive amplification circuitry are disclosed.

REFERENCES:
patent: 3373437 (1968-03-01), Sweet
patent: 3560641 (1971-02-01), Taylor et al.
patent: 3596275 (1971-07-01), Sweet
patent: 3596276 (1971-07-01), Lovelady et al.
patent: 3739393 (1973-06-01), Lyon et al.
patent: 3877036 (1975-04-01), Loeffler et al.
patent: 3878519 (1975-04-01), Eaton
patent: 3886564 (1975-05-01), Naylor et al.
patent: 3960324 (1976-06-01), Titus et al.
patent: 4067019 (1978-01-01), Fleischer et al.
patent: 4135197 (1979-01-01), Stoneburner
patent: 4136345 (1979-01-01), Neville et al.
patent: 4198643 (1980-04-01), Cha et al.
patent: 4220958 (1980-09-01), Crowley
patent: 4255754 (1981-03-01), Crean et al.
patent: 4303927 (1981-12-01), Tsao
patent: 4350986 (1982-09-01), Yamada
patent: 4417256 (1983-11-01), Fillmore et al.
patent: 4638325 (1987-01-01), Schneider et al.
patent: 4638328 (1987-01-01), Drake et al.
patent: 5224843 (1993-07-01), van Lintel
patent: 6435645 (2002-08-01), Falinski
patent: 6450619 (2002-09-01), Anagnostopoulos et al.
patent: 6474784 (2002-11-01), Fujii et al.
patent: 6474794 (2002-11-01), Anagnostopoulos et al.
patent: 6491385 (2002-12-01), Anagnostopoulos et al.
patent: 6561627 (2003-05-01), Jarrold et al.
patent: 7249830 (2007-07-01), Hawkins et al.
D.J. Drake, Binary Continuous Thermal Ink Jet Break Off Length Modulation, Xerox Disclosure Journal, Xerox Corporation, Stamford, Conn., vol. 14, No. 3, May 1, 1989, pp. 95-100, XP000027460.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Ink jet break-off length measurement apparatus and method 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 break-off length measurement apparatus and method, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Ink jet break-off length measurement apparatus and method will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-4017888

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.