Patent ID: 8025373

Claim:
A printer system which performs printing by discharging an ink onto a recording medium, the printer system comprising: a main printer including a first tank which stores the ink and a first head which discharges the ink supplied from the first tank onto the recording medium; a portable type sub printer which is detachably accommodated with the main printer, the sub printer including a second ink tank which stores the ink, the second ink tank of which volume is smaller than that of the first tank, and a second head which discharges the ink supplied from the second tank onto the recording medium; and a supply mechanism which connects the first tank and the second tank to supply the ink from the first tank to the second tank when the sub printer is installed to the main printer, wherein the main printer further comprises a first installing section in which the first tank is accommodated detachably and a second installing section to which the sub printer is installed detachably and wherein the supply mechanism comprises a detecting mechanism which detects an installation of the sub printer to the second installing section.