Cartridge-type ink supply device for labeling machines

In an ink supply device for supplying ink onto a type surface of a printing mechanism of a labeling machine, said printing mechanism being used for printing inscriptions on each of a series of labels fed by indexed movement along a travel path thereof within the machine and said ink supply device comprising holding means adapted for supporting and attaching the device onto the machine;

• said ink supply device comprising an inking roller cartridge having at least one inking roller and a U-shaped inking roller support for supporting said inking roller, said U-shaped inking roller support having engaging means, said holding means comprising a cartridge holder adapted for holding said inking roller cartridge, said cartridge holder having a first part adapted to be detachably engaged with a part of the labeling machine and with a second part adapted to be detachably engaged with said former engaging means of said U-shaped inking roller support to support thereby said inking roller cartridge, the inking roller cartridge comprising a U-shaped inking roller support having a pair of side plates which are confronted with each other, at least one pivotal shaft supported by said side plates so as to be projected outward therefrom, and an inking roller supported by said pivotal shaft, said U-shaped inking roller support being provided with a fixing means;
• and the cartridge holder comprises a holder and an attaching member, said holder comprising a pair of arms which are spaced for a predetermined distance, supporting means which comprise a pair of holding pieces unified with one side ends of said arms and having cut slots adapted to be engaged with the pivotal shaft of said U-shaped inking roller support, and a support pin adapted to be engaged with said fixing means of said U-shaped inking roller support, said attaching member being attached to other side ends of said arms and comprising support means for attaching the attaching member itself to the labeling machine thereby to attach said holder with the inking roller support to the labeling machine.