Ink-jet printing module

An ink-jet printing module used for a page-width array ink-jet printer, said ink-jet printing module comprising:

• a page-width array platen having a plurality of receiving cavities arranged as an array;
• a plurality of ink-jet cartridges, each of which being detachably and independently embedded into one of said receiving cavities, and including a body for storing ink, an ink-jet chip to be driven for ejecting said ink, a plurality of nozzles disposed on said ink-jet chip, and a control node for receiving signal to drive said ink-jet chip, wherein said ink-jet chip is disposed on a bottom of said page-width array platen and is driven to eject said ink through said nozzles onto a printing medium;
• and
• a plurality of control node circuits disposed on vertical sidewalls of said receiving cavities on said page-width array platen and corresponding to said control nodes of said ink-jet cartridges for transmitting signal to said ink-jet chips of said ink-jet cartridges, so as to enable said ink-jet cartridges to eject said ink onto said printing medium, said plurality of ink-jet cartridges are arranged in at least one row along a printing direction, any two adjacent ink-jet cartridges are spaced from each other, each of said plurality of ink-jet cartridges is partly offset with other ink-jet cartridges in the same row, and a page-width array printing range of said ink-jet printing module for printing on said printing medium is 8.27 inches (A4 size).