The invention relates to an impact-modified bio-degradable polymer composition having large particle size impact modifiers dispersed in a continuous biodegradable polymer phase. A porous, fluid permeable lining for attenuating noise caused by turbulent air flow through the air duct is positioned on the shell inner surface, and defines an inner surface. The control device includes an initialization circuit for the pixel electrode including a second switching element, connected to the pixel electrode, and a control electrode of which is connected to a preceding row of the network. A tank is connected to the head and includes an ink containing section that contains ink to be supplied to the head. Each of the fan axes are axially offset from the drive shaft axis. This method generates dot data representing a state of dot formation of the color dot and the transparent dot at each pixel based on the color dot recording rate table and the transparent dot recording rate table.