Patent ID: 8322822

Claim:
An ink supply device comprising: a cartridge mounting portion to which an ink cartridge is configured to be mounted; a first detector configured to detect a first detection target portion of the ink cartridge and to output first detection information when the first detector detects the first detection target portion; a second detector configured to detect a second detection target portion of the ink cartridge and to output second detection information when the second detector detects the second detection target portion; and a controller configured to perform a first determination process in which the controller determines that the ink cartridge is of a first kind if the first detection information begins to be output earlier than the second detection information begins to be output during the insertion of the ink cartridge into the cartridge mounting portion in the insertion direction, and determines that the ink cartridge is of a second kind if the second detection information begins to be output earlier than the first detection information begins to be output during the insertion of the ink cartridge into the cartridge mounting portion in the insertion direction.