Patent attributes
A liquid container detachably mountable to a mounting portion of an ink jet printer including an information storing portion for storing information relating to the liquid container; a controller controls light emission of a light emitting portion, based on individual information corresponding to the ink container, supplied through a container contact from a printer contact, and the discrimination information stored in the memory; a light guide member having a light incident portion and a light emergence portion, the light guide member configured to guide the light entered from the light incident portion to the light emergence portion so as to cause a light receptor to receive the light emerged from the light emergence portion to obtain light reception information used for discriminating properness of position of the ink container mounted in the mounting portion.
