Patent ID: 8668294
Filing Date: 2014-03-11
Classification: B41J

Abstract:
1. A method of printing images in an inkjet printer comprising: receiving image data for a color separation; storing a portion of the color separation image data in a first memory map used to generate electrical signals for operating at least one printhead that is configured to eject ink drops of a first color and first ink drop mass; storing a remaining portion of the color separation image data in a second memory map used to generate electrical signals for operating at least one other printhead that is configured to eject ink drops of the first color and second ink drop mass, the second ink drop mass being greater than the first ink drop mass; generating a first plurality of electrical signals for operating the at least one printhead with reference to the first memory map for the at least one printhead; generating a second plurality of electrical signals for operating the at least one other printhead with reference to the second memory map for the at least one other printhead; sending an electrical signal parameter to a printhead controller that generates with reference to the electrical signal parameter the electrical signals for operating the at least one printhead and the at least one other printhead; and operating the at least one printhead with reference to the electrical signals generated by the printhead controller at a frequency in a process direction that is less than the frequency in the process direction at which the at least one other printhead is operated.