Patent ID: 8845062
Filing Date: 2014-09-30
Classification: B41J

Abstract:
1. A density correction system comprising: a conveyance unit that conveys a recording medium; a first ink ejection unit that ejects ink in a multi-drop driving system to the recording medium based on image data; a second ink ejection unit that ejects ink in the multi-drop driving system to the recording medium based on the image data and in which a volume per one drop is smaller than a volume per one drop of the first ink ejection unit; and a control unit that corrects a number of drops from the first ink ejection unit and a number of drops from the second ink ejection unit, which constitute a droplet amount for one pixel on the recording medium subjected to image formation, wherein the control unit keeps constant the sum of the numbers of drops from one nozzle of the first ink ejection unit and one nozzle of the second ink ejection unit, which corresponds to one arbitrary pixel.