Patent ID: 7182456

Claim:
A hand-held and hand-operated random movement printing device controlled by at least one processor ( 4 ), controlling comprised means to perform their intended tasks, having an ink-jet print-head ( 2 ) assembly comprised in a housing ( 1 ), further comprising: at least one ink container; a transmitter for transmission of electromagnetic radiation on a print medium; a receiver for receiving reflected electromagnetic radiation from said print medium; digital signal processing means providing a digital signal of the inherent information received by reflected radiation; a memory storing a digitised raster of a code pattern for printing a plurality of marks, each mark being related to a coordinate in an imaginary coordinate system made up of the raster to be printed on said print medium, said memory also storing an image to be printed on the print medium, said image being associated to coordinates in the imaginary coordinate system; a print-head array disposed to have nozzles for printing a raster of a code pattern, and print nozzles for the image to be printed, printing a part of the pattern through spray dozes from the nozzles and related parts belonging to the image; and whereby said raster of a code pattern enables the printer to be randomly moved over a print medium still keeping track of the print-head arrays position, and integrates the image to the coordinate system to be coherently printed.