Liquid jetting apparatus and electrostatic latent image developing apparatus
US6269232A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 1, 2000 |
| Grant date | Jul 31, 2001 |
| Priority date | — |
| Expiry date | Mar 1, 2020 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J2002/14322
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A longitudinal wave propagates in ink toward an opening. The surface of the ink is positioned at the opening and is curved. A surface wave is excited from an end of the liquid surface owing to a restoring force caused by surface tension of the ink. Assuming that the wavelength of the surface wave is .lambda.c, the diameter of the opening is established to be not smaller than 2m .lambda.c. The surface wave is generated from an edge of the opening and rapidly decreases due to the longitudinal wave. The surface waves caused by the longitudinal wave do not interfere with each other at the opening provided that certain conditions are established. Therefore, no complicated interference wave occurs on the surface of the ink, and the surface of the ink vibrates with a large amplitude in the vicinity of the edge of the opening.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.