Patent ID: 8270880

Claim:
An image forming device comprising: a plurality of developer cartridges configured to hold therein liquid developer including developing agent and liquid carrier; a plurality of developing agent bearing members configured to bear the liquid developer; and a plurality of reservoirs each fluidly connected to an associated one of the developer cartridges, wherein the plurality of reservoirs are configured to store the liquid developer to be supplied to the developing agent bearing members, wherein at least one of the developer cartridges comprises: a first accumulating section configured to hold therein first liquid developer and to fluidly connect to an associated one of the reservoirs; a second accumulating section configured to fluidly connect to an associated one of the reservoirs and to hold therein one of the liquid carrier and second liquid developer having a developing agent concentration ratio lower than a developing agent concentration of the first liquid developer; and a third accumulating section that accumulates therein a waste developing agent remaining on a plurality of image bearing members after an image transfer to an image recording medium, and wherein each of one or more remaining developer cartridges comprises one of: (a) the first accumulating section, (b) the first accumulating section and the second accumulating section, and (c) the first accumulating section and the third accumulating section.