In a fixation structure for fixing a lamp on a printed circuit board, a connection end of the lamp is received within a connection hole of the PCB and a sleeve having approximately cone shape is disposed between the lamp and the PCB. The constraint mechanism includes a linkage set disposed on the second body, and a first hook and a second hook respectively disposed on the first body. In a second, filtered mode of operation, a suction source draws ambient air through a filter removing contaminants and delivers filtered ambient air to the user. This process is repeated until the required temperature of the ink is reached, and printing is then inititated.