(19) United States
(12) Patent Application Publication (io) Pub. No.: US 2002/0092915 Al
Marchand (43) Pub. Date: Jul. 18,2002
I r / /
(54) PRINTABLE MICROWAVE IMAGES FOR DATA ENCODING
(76) Inventor: J. F. Philippe Marchand, Rochester, NY (US)
Albert P. Sharpe, III, Esq.
Fay, Sharpe, Fagan,
Minnich & McKee, LLP
1100 Superior Avenue, 7th Floor
Cleveland, OH 44114-2518 (US)
(21) Appl. No.: 09/725,999
(22) Filed: Nov. 29, 2000
Publication Classification (51) Int. CI.7 G06K 19/06
A printable microwave image for data encoding is provided. The microwave image comprises a two-dimensional pattern of a plurality of pixels on a surface, wherein each pixel exists in one of two states with respect to radiation in a microwave frequency range. An opaque state prevents transmission of microwave radiation, and a transparent state permits transmission of microwave radiation. The applicable microwave frequency range is from a low frequency of 1 gigahertz to a high frequency of 200 gigahertz. The opaque pixels can be comprised of reflective printer ink that reflects the microwave radiation, absorbent printer ink that absorbs the microwave radiation, reflective laser printer toner that reflects the microwave radiation, absorbent laser printer toner that absorbs the microwave radiation, or a metal foil.