Patent ID: 8382265

Claim:
A liquid container detachably mountable to a main assembly of a recording apparatus, wherein the main assembly includes (a) a carriage which is movable in a moving direction and to which a plurality of liquid containers containing liquid of different colors, respectively, are detachably mountable, (b) a data line commonly electrically connectable with the liquid containers mounted to the carriage to send, color information and a light-emitting command to the liquid containers, (c) an electrical power line commonly electrically connectable with the liquid containers mounted in the carriage to supply electrical power to the liquid containers, (d) a light receptor and (e) a discriminator configured to discriminate properness of positions of the liquid containers in the carriage on the basis of light reception information of the light receptor provided by light emitted from the liquid containers, said liquid container comprising: a data contact electrically connectable with the data line; a memory storing container discrimination information that indicates a color of the liquid in the said liquid container; a light emitter positioned to emit the light toward the light receptor; a controller (A) configured to receive, the color information and the light-emitting command from the data line through said data contact and (B) configured to control said light emitter, based on the received color information and the received light-emitting command and the container discrimination information stored in said memory; and an electrical power contact electrically connectable with the electrical power line to receive electrical power for performing light emitting of said light emitter from the electrical power line.