Compact microwave-powered lamp, inkjet printer using this lamp, and ultraviolet light curing using this lamp
US6509697B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 30, 2001 |
| Grant date | Jan 21, 2003 |
| Priority date | — |
| Expiry date | Jan 30, 2021 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J11/00216
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A compact, electrodeless, microwave-powered lamp (e.g., ultraviolet light emitting lamp) is provided, as well as methods of using this lamp. The lamp includes a microwave generator, waveguide and RF cavity. The RF slot between the waveguide and RF cavity, for introducing microwaves from the waveguide into the RF cavity, extends through an end member forming the RF cavity rather than through the elliptical-shaped reflector; and the RF slot is aligned with the bulb. Cooling air for cooling the bulb passes through the RF slot, and preferably this cooling air passes by both the bulb and microwave generator for cooling both. The bulb is rotated during use. The compact size of the lamp facilitates its use in small devices, such as inkjet printers for office use to cure ultraviolet light curable inkjet inks, among other uses.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.