The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 11, 1987
Filed:
Jun. 06, 1986
Lisa M Schmidle, Southbury, CT (US);
Stuart D Howkins, Ridgefield, CT (US);
Other;
Abstract
A method for both reducing the ligament length and satellite droplet problems associated with producing high velocity ink droplets from an ink jet head printing at relatively high ink jet head transport speeds, comprises driving the ink jet head with a composite waveform including independent and successive first, second, and third electrical pulses, each having an exponential leading edge and a step-like trailing edge, the pulses being constructed to have amplitudes, pulse widths, and dead times between pulses, for causing the ink jet head to eject three successive ink droplets, each of increased velocity relative to the preceding droplet, for causing the droplets to merge in flight fo form a single or ultimate droplet having a predetermined velocity.