Shielding device for antenna board, and liquid ejection apparatus incorporating the same
US6900774B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 2, 2003 |
| Grant date | May 31, 2005 |
| Priority date | — |
| Expiry date | Nov 13, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01Q1/52
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A first plate member constitutes a part of a main frame of a liquid ejection apparatus. A second plate member is extended from the first plate member such that a first part thereof opposes to a traveling path of a carriage which carries a plurality of liquid containers each provided with an IC chip and a receiving antenna. A transmission antenna is provided on an antenna board. The antenna board is mounted on the first part of the second plate member. The second plate member is formed with a first region which allows the transmission antenna to establish radio communication with the receiving antenna, and a second region which shields radio waves.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.