A printing system utilizing inks with high solids content includes a mixing unit for receiving a high solids content ink and producing a concentrated ink and an interim tank for receiving the concentrated ink from the mixing unit. A generator mounted on the flue of a water heater converts exhaust heat from the water heater into electrical power, which is stored in a battery. The present invention also provides exemplary sutures and drivers that can be used with the various methods and devices disclosed herein, or with other methods and devices known in the art. The purpose of the location system is to identify the location of the fire extinguisher for a user in response to an audio alert being generated by the smoke alarm. The corresponding carrier phase for the two HF carrier base frequencies is determined in sequence over time. In some embodiments, the first suspension arm is connected to the front of the frame at or near the longitudinal center of the frame, while the second suspension arm is connected to the side of the frame a distance from the front of the frame.