Patent ID: 8662649
Filing Date: 2014-03-04
Classification: B41J

Abstract:
1. An inkjet printer comprising: a first printhead having a plurality of inkjets, the plurality of inkjets being arranged in at least two arrays of inkjets with one array being configured to eject black ink supplied by a first reservoir and at least one other array being configured to eject an ink having a color having a color other than black that is supplied by a second reservoir; a third reservoir positioned with reference to the first printhead to receive ink emitted from the first printhead onto a face of the first printhead, the third reservoir being fluidly connected to the first reservoir; and a controller operatively connected to the first printhead and the third reservoir, the controller being configured to: move ink from the third reservoir to the first reservoir to form a mixed ink; identify a value of an optical characteristic of the mixed ink; identify a difference between the value of the optical characteristic of the mixed ink and a predetermined value of the optical characteristic for black ink; and adjust operation of the printer to enable the printer to form an ink image with the mixed ink that has a value of the optical characteristic that is closer to the predetermined value of the optical characteristic for black ink than the value of the optical characteristic of the mixed ink is to the predetermined value of the optical characteristic for black ink.