Patent ID: 8282184
Filing Date: 2012-10-09
Classification: B41J

Abstract:
1. A print engine controller for a pagewidth inkjet printhead having a plurality of abutting printhead modules mounted on a carrier, wherein at least one of said printhead modules has an erroneous rotational yaw displacement, said print engine controller being configured to: (a) receive data identifying the rotational yaw displacement of the erroneously displaced printhead module; (b) determine at least one correction factor that at least partially compensates for ink dot displacement by at least one of a plurality of nozzles in the erroneously displaced printhead module; (c) use the correction factor to determine an accumulative Y-offset for each printhead module in the printhead; and (d) alter the output of the ink dots from nozzles in each printhead module having a non-zero accumulative Y-offset to at least partially compensate for the rotational yaw displacement of the erroneously displaced printhead module.