An ink containing device includes an ink cartridge and an adaptor. The fins are created by superimposing a sheet of metallic foil upon a metallic plate, with the foil being bonded to the plate by welding utilizing ultrasonic energy. Message representations are also associated with visual depth indicators that are independent of the text of the messages. The ultrasonic marker positioned in the inner retention device eliminates or reduces the use of fluoroscopy or endoscopy to position and later verify the location of the gastrostomy tube in a patient. In one embodiment, a method for communicating with a subscriber comprises transmitting orthogonal frequency domain multiplexing signals to the subscriber, and receiving direct-sequence spread spectrum signals from the subscriber. Therefore, a miss of defect on the substrate is suppressed, while the image processing is performed at a high speed.