Liquid ejecting head and liquid ejecting apparatus
US8282194B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 23, 2010 |
| Grant date | Oct 9, 2012 |
| Priority date | — |
| Expiry date | Apr 8, 2031 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J2202/11
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A liquid ejecting head includes nozzles that eject liquid, pressurizing chambers communicating with respective nozzles, and liquid supply channels that supply the liquid to the pressurizing chambers. The liquid ejecting head ejects the liquid when a pressure generating unit changes the pressure within the pressurizing chambers. A cylindrical nozzle straight portion, in which the opening cross-sectional area is narrower than at other areas of the nozzle, is formed toward the pressurizing chamber from the nozzle opening in each nozzle. The opening cross-sectional area of the nozzle straight portion is Sn; the length thereof is Ln; the channel cross-sectional area of the liquid supply channel is Ss; the length from a common liquid chamber-side connection opening in the liquid supply channel to a pressurizing chamber-side connection opening is Ls. The ratio (Ln/Sn) is less than or equal to ½ of the ratio (Ls/Ss).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.