Ink droplet ejecting method and apparatus
US6257685A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Nov 30, 1998 |
| Grant date | Jul 10, 2001 |
| 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
An ink droplet ejecting method and apparatus are provided that are capable of effecting printing at a high resolution and a high quality, and at the same time capable of preventing a drop-out in white and a decrease of print density from occurring, for example, in printing a solid pattern. As a jet pulse signal, a pulse signal is used which, when ejection of ink is performed in a continuous manner, provides a small ink droplet for only a first dot, and large ink droplets for second and subsequent dots and which, when ejection of ink is performed intermittently at intervals of only one dot, provides small ink droplets for all of the ink droplets formed. As a result, a small print portion becomes attractive, and the resolution can be enhanced. Further, in the case of continuous dots, no gap is formed between adjacent dots.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.