Patent ID: 9186887
Filing Date: 2015-11-17
Classification: B41J,H04N

Abstract:
1. A method of controlling ejectors in a printer comprising: generating multi-level tone data for at least one material to be ejected onto a substrate with reference to continuous tone data, each multi-level tone datum of the multi-level tone data having at least three possible values and each continuous tone datum having at least one more possible value than the multi-level tone datum; detecting multi-level tone data that corresponds to a malfunctioning ejector that ejects the material; modifying the generated multi-level tone data by decrementing each multi-level tone datum corresponding to the malfunctioning ejector and correspondingly incrementing at least one multi-level tone datum within the generated multi-level tone data in which a multi-level tone datum is stored that is less than a maximum multi-level tone datum, the at least one incremented multi-level tone datum corresponding to at least one functional ejector that is adjacent to the malfunctioning ejector; and operating the at least one functional ejector with reference to the modified generated multi-level tone data to eject ink onto a substrate.