Compact microwave-powered lamp, inkjet printer using this lamp, and ultraviolet light curing using this lamp
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United States of America Patent
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Jan 21, 2003
Grant Date -
Aug 1, 2002
app pub date -
Jan 30, 2001
filing date -
Jan 30, 2001
priority date (Note) -
Expired
status (Latency Note)
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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.
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