Abstract: A low-profile printer includes a main housing portion, a front portion, a media transport mechanism, a print mechanism and a media tray. The front portion is pivotally or detachably secured to the main housing portion. The media tray is positioned inside the main housing portion. In a preferred embodiment, the media transport mechanism and print mechanism are mechanically coupled to the front portion. The media transport mechanism, the print mechanism and the media tray are accessible when the front portion is in an opened position.

Abstract: In accordance with the present invention, several methods are presented for the detection of gas into an offshore marine riser (e.g., riser gas). In a first embodiment of this invention, an acoustic transmitter is positioned on or nearby the subsea blowout preventor stack and imparts continuous low frequency waves into the annular fluid in the marine riser. These imparted waves define pressure perturbations which are received by a pressure transducer positioned on the riser at a location above the acoustic transmitter. Gas detection in the riser is then indicated by determining the rate of change of certain characteristics of the output. The output characteristics are preferably the moduli and phase angles of the acoustic fundamentals and their harmonics.