A printing system including a server and a printer which can be communicate with the server. The wafer may have image sensor chips and scribe lines demarcating each image sensor chip. The fabric layer is then reversed through cross-like slits formed in the fabric layer in a location opposite to a valve opening in such a manner that the marginal edges are located on an inner side of the fabric layer. The processor provides a power control signal via the control pin to supply an operating voltage to the memory card when the sensed card-insertion signal indicates that the memory card has been inserted into the socket.