Piezo impulse ink jet pulse delay to reduce mechanical and fluidic cross-talk
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Sep 1, 1998
Issued Date -
N/A
app pub date -
Nov 2, 1995
filing date -
Sep 23, 1994
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
An ink jet apparatus comprising an array of impulse ink jets is disclosed. Each of the ink jets includes a chamber having an orifice and a transducer coupled to the chamber, a signal generator applying firing signals to each transducer of each of the ink jets to eject droplets of ink on demand, and a controller for controlling the phase of the firing signals to prevent the simultaneous application of the firing signals to adjacent ink jets in the array. The orifices are linearly aligned and adjacent ink jets produce ink drops offset by less than the diameter of the drops. The natural ringing of the piezo crystals of the ink jet transducers has been found to occur at a frequency of about 46 kHz (period=22 .mu.s), and so a delay of about 25 ms, one-half the ringing period, is used to minimize cross-talk among neighboring channels.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully