Ink droplet ejecting method and apparatus
US6099103A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Nov 30, 1998 |
| Grant date | Aug 8, 2000 |
| Priority date | — |
| Expiry date | Nov 30, 2018 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J2202/10
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
In an ink droplet ejecting method and apparatus, a main driving waveform for the ejection of ink droplet is followed by two additional non-jet pulses, for one dot, without changing a driving voltage, whereby not only an ink droplet of a small volume can be obtained, but also the ink droplet speed in the second ejection after a stop which follows continuous droplet ejection is prevented from becoming lower. The application of a jet pulse signal A of one dot is followed by the application of both a droplet downsizing pulse B as a non-jet pulse for reducing the size of an ejected ink droplet, the pulse B being smaller in pulse width than the jet pulse signal A, and a jet stabilizing pulse C as a non-jet pulse for stabilizing the ejection of ink droplet. By so doing, even when the ink viscosity is low at a high temperature, the ejection of ink droplet is stabilized and a decrease in the droplet speed is prevented.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.