Method and apparatus for printing with ink drops of varying sizes using a drop-on-demand ink jet print head
US5124716A · kind A · utility
51Cited by
25References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 26, 1991 |
| Grant date | Jun 23, 1992 |
| Priority date | — |
| Expiry date | Apr 26, 2011 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J2/2128
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A drop-on-demand ink jet has an ink chamber coupled to a source of ink, and an ink drop orifice with an outlet. An acoustic driver produces a pressure wave in the ink and causes the ink to pass outwardly through the ink drop orifice and outlet. The size of the ink drops may be varied, such as by driving the acoustic driver with varying drive signals, preferably comprising individual or combinations of plural bipolar drive pulses. The ink jet printer of the present invention may be used to print with a wide variety of inks, including phase change inks.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.