Inkjet cartridge capacity

[wjt]

Hello. I have often wondered how OEM cartridges are made. How is it that moderate use, high capacity use and extra high capacity cartridges all come in the same physical size. Are there barriers inside or are they just partly or completely filled or???

 

[PeterBJ]

Both techniques are used. Another method is using sponges that are only half height. This site has some examples: http://freedomtoprint.com/2010/07/1...rtridgesscc653a-black-inkjet-print-cartridge/

 

[gigigogu]

I may add different kinds of sponge, able to hold more or less ink.