A vibratory and impact connector for a power tool is provided with a spring, a first drive rod, a drive ring and a second drive rod which are sequentially received in an outer cylinder. In response to the receipt of a refresh control signal, a plurality of refresh control signals is sent to the memory circuits at different times. The quadrangle quasi-formed on the medium prior to deformation is divided using one of the first and second diagonals that yields the larger area difference, and the formation amount of colorant formed on the medium is corrected according to the deformation ratio after deformation for the triangles formed by the division. By varying the restraining force by the drive control means the movement of the bung along the medicament cartridge can be controlled. The fluid reservoir is disposed on the bracket and having an opening configured to face substantially in a downward direction in a state where the bracket is mounted to the bicycle handlebar.