Patent ID: 7445324

Claim:
A method of manufacturing an ink cartridge system, comprising the steps of: using a first mold to make a first case member of a first ink cartridge; using a second mold to make a second case member of the first ink cartridge; using the first mold to make a first case member of a second ink cartridge; using a third mold to make a second case member of the second ink cartridge; using a fourth mold to make a first case member of a third ink cartridge; and using the third mold to make the second case member of the third ink cartridge, wherein a size of the first ink cartridge is not equal to a size of the second ink cartridge, the size of the first ink cartridge is not equal to a size of the third ink cartridge, and the size of the second ink cartridge is not equal to the size of the third ink cartridge.