If only a specific color and its nearby colors of image data are adjusted, density discontinuation occurs in the image as a whole. A force exerted on the cutting blade substantially in parallel with the interface is measured. Therefore, the external quantum efficiency of the light-emitting device is increased. The mouthpiece unit includes a rotatable member, a seal ring and a mouthpiece. As a result, an in-vehicle apparatus remote control system can be provided in which the communication responsiveness can be enhanced and the reliability of communication is high, and that is small-sized, inexpensive, and suitable for preventing theft of a vehicle. The apparatus provides a tool that may be employed for rapid screening of the skin for lesions that may be indicative of skin diseases, in particular skin cancers such as melanoma.