Abstract: A detection device for an amount of remaining gas of a soda water machine includes a remaining gas amount sensor, a signal transmitter and a gas bottle sensing device. The remaining gas amount sensor detects the amount of remaining gas in a gas bottle of the soda water machine. When the amount of remaining gas in the gas bottle is lower than a predetermined value, the signal transmitter sends an alert signal to a user. The gas bottle sensing device detects whether the gas bottle is disposed on the soda water machine. The detection device and detection method using the above detection device for an amount of remaining gas of a soda water machine are capable of solving the issue that the gas bottle cannot be immediately replaced once the user discovers that the gas in a gas bottle connected to a soda water machine is insufficient.

Abstract: A device for cleaning out residual ink. The device includes an assembly of a bed and a slide mount. The bed has an oblique rail. The slide mount is equipped with a wiping blade. The slide mount is drivable by an ink cartridge carrier to reciprocally move along the oblique rail on the bed. Accordingly, the wiping blade can move componentially along y-axis to wipe off residual ink remaining on a printhead of the ink cartridge.

Abstract: A device for cleaning out residual ink. The device includes an assembly of a bed and a slide mount. The bed has an oblique rail. The slide mount is equipped with a wiping blade. The slide mount is drivable by an ink cartridge carrier to reciprocally move along the oblique rail on the bed. Accordingly, the wiping blade can move componentially along y-axis to wipe off residual ink remaining on a printhead of the ink cartridge.

Abstract: A roller protective device including a bracket, an operating arm reciprocally movably mounted on the bracket for holding a roller, a cover pivotally connected with the operating arm and movable between a first position and a second position in response to the reciprocation of the operating arm for disclosing/enclosing the roller, and a resilient member positioned between the operating arm and the cover. The resilient member always exerts a resilient force onto the cover in a direction to the first position where the cover discloses the roller. In a not used state, the cover is automatically moved to the second position where the cover encloses the roller to protect the roller from contamination of aerosols.