Ink jet cartridges and ink cartridge mounting system

An ink cartridge mounting system adapted to provide one-way compatibility between first and second types of ink jet printers, the first type of ink jet printer having a first group of multiple cartridge receiving openings, each cartridge receiving opening having a peripheral boundary, a first set of multiple ribs projecting substantially radially inwardly from the peripheral boundary and a first set of multiple recesses spacing the ribs from one another about the peripheral boundary, the multiple ribs and recesses of each cartridge receiving opening being so configured and arranged as to define a first group of keying patterns which are each distinctive from one another, the keyway pattern of each cartridge receiving opening in the first group being adapted to receive one of a first group of multiple ink cartridges, each cartridge containing a different color of ink and having a complementary shaped end portion adapted to seat in only one of the cartridge receiving openings of the first group, the cartridge mounting system comprising:

• an ink cartridge mounting element supported in the second type of ink jet printer;
• the cartridge mounting element having a second group of multiple cartridge receiving openings;
• each cartridge receiving opening of the second group having a peripheral boundary, a second set of multiple ribs projecting substantially radially inwardly from the peripheral boundary, and a second set of multiple recesses spacing the second set of multiple ribs from one another about the peripheral boundary, the second set of multiple ribs and recesses of each cartridge opening of the second group being so configured and arranged as to define a second group of keying patterns which are distinctive from one another;
• a second group of ink cartridges, each having a hollow body with an interior ink receiving chamber, each hollow body having a fluted end portion, a peripheral boundary, a set of multiple flanges extending substantially radially outwardly and a set of multiple flutes interspaced between the flanges, the set of flanges and flutes of each cartridge of the second group being so configured and arranged as to define keying patterns which are distinctive from one another and complementary to only one of the keying patterns of the cartridge receiving openings of the second group;
• the cartridge receiving openings of the second group having at least one additional recess and one additional rib than the cartridge receiving openings of the first group;
• the keying patterns of the cartridge receiving openings of the second group each matching a different keying pattern of one of the cartridge receiving openings of the first group but for the additional rib and recess;
• whereby each ink cartridge of the second group containing a particular color of ink can be seated in the particular cartridge receiving opening of either the first or second groups designated for such color while the ink cartridges of the first group will not seat in any cartridge receiving opening of the second group.

An ink cartridge system adapted for use in an ink jet printer, the system comprising:

• at least four ink cartridges each having a substantially cylindrical hollow body defining an interior ink receiving chamber and a fluted end portion;
• each fluted end portion having an outer periphery, at least six flanges projecting radially outwardly from the periphery and six flutes spacing the flanges from one another, the flanges and flutes of each ink cartridge defining a unique keying pattern distinctive from the others;
• the fluted end portion of a first ink cartridge including a first flange having an angular width extending from about 24 degrees to 48 degrees with reference to a bottom end view of the fluted end portion and to an imaginary zero degree reference line extending radially perpendicularly to an axial centerline of the end portion, a second flange having an angular width extending from about 78 degrees to 115 degrees when similarly viewed, a third flange having an angular width extending from about 135 degrees to 156 degrees when similarly viewed, a fourth flange having an angular width extending from about 204 degrees to 228 degrees when similarly viewed, a fifth flange having an angular width from about 258 degrees to 295 degrees when similarly viewed, and a sixth flange having an angular width from about 315 degrees to 336 degrees when similarly viewed;
• the fluted end portion of a second ink cartridge including a first flange having an angular width extending from about 24 degrees to 66 degrees with reference to a bottom end view of the fluted end portion and to an imaging zero degree reference line extending radially perpendicularly to an axial centerline of the fluted end portion, a second flange having an angular width extending from about 96 degrees to 116 degrees when similarly viewed, a third flange having an angular width extending from about 141 degrees to 156 degrees when similarly viewed, a fourth flange having an angular width extending from about 204 degrees to 246 degrees when similarly viewed, a fifth flange having an angular width from about 276 degrees to 29 degrees when similarly viewed, and a sixth flange having an angular width from about 321 degrees to 336 degrees when similarly viewed;
• the flange end portion of a third ink cartridge including a first flange having an angular width extending from about 24 degrees to 39 degrees with reference to a bottom end view of the end portion and to an imaging zero degree reference line extending radially perpendicularly to an axial centerline of the end portion, a second flange having an angular width extending from about 64 degrees to 84 degrees when similarly viewed, a third flange having an angular width extending from about 120 degrees to 156 degrees when similarly viewed, a fourth flange having an angular width extending from about 204 degrees to about 219 degrees when similarly viewed, a fifth flange having an angular width from about 244 degrees to 264 degrees when similarly viewed, and a sixth flange having an angular width from about 300 degrees to 336 degrees when similarly viewed;
• the flange end portion of a fourth ink cartridge including a first flange having an angular width extending from about 24 to 40 degrees with reference to a bottom end view of the end portion and to an imaging zero degree reference line extending radially perpendicularly to an axial centerline of the end portion, a second flange having an angular width extending from about 66 degrees to 102 degrees when similarly viewed, a third flange having an angular width extending from about 132 degrees to 156 degrees when similarly viewed, a fourth flange having an angular width extending from about 204 degrees to 220 degrees when similarly viewed, a fifth flange having an angular width from about 240 degrees to 282 degrees when similarly viewed, and a sixth flange having an angular width from about 312 degrees to 336 degrees when similarly viewed.