Incremental printing of symbolic information – Ink jet – Controller
Patent
1996-06-18
1998-04-07
Burr, Edgar S.
Incremental printing of symbolic information
Ink jet
Controller
347 14, B41J 201
Patent
active
057369941
ABSTRACT:
A first pulse signal A of a first drive waveform used when an ambient temperature is 25.degree. C. or less has a peak value of 22 (V). The pulse width WA of the first pulse signal A matches with time T during which a pressure wave uni-directionally travels along the inside of an ink flow passage. A second drive waveform used when the ambient temperature is in excess of 25.degree. C. includes a second pulse signal B used for ejecting ink and a third pulse signal C used for compensating for variations in a residual pressure within the ink flow passage occurs after the ink has been ejected. Both the second pulse signal B and the third pulse signal C have a peak value of 22 (V). The pulse width WB of the second pulse signal B is 0.7 times the uni-directional propagation time T, whereas the pulse width WC of the third pulse signal C is half the uni-directional propagation time T. A delay time D between center time T1M of the second pulse signal B and center time T2M of the third pulse signal C is 3.0 times the uni-directional propagation time T. As a result, it is possible to implement an inexpensive ink-jet apparatus and a driving method thereof which prevent variations in an ink jet velocity caused by variations in ambient temperature, and which provide superior print quality.
REFERENCES:
patent: 3946398 (1976-03-01), Kyser et al.
patent: 4087825 (1978-05-01), Chen et al.
patent: 4686539 (1987-08-01), Schmidle et al.
patent: 4845514 (1989-07-01), Mitsushima et al.
patent: 4879568 (1989-11-01), Bartky et al.
patent: 5036337 (1991-07-01), Rezanka
patent: 5204695 (1993-04-01), Tokunaga et al.
patent: 5300968 (1994-04-01), Hawkins
patent: 5331340 (1994-07-01), Sukigara
patent: 5576743 (1996-11-01), Momose et al.
Brother Kogyo Kabushiki Kaisha
Burr Edgar S.
Kelley Steven S.
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