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    • 50. 发明申请
    • EVALUATING PRINT HEAD NOZZLE CONDITION
    • 评估打印头喷嘴条件
    • WO2015163861A2
    • 2015-10-29
    • PCT/US2014/035080
    • 2014-04-23
    • HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
    • ANDERSON, Daryl E.MARTIN, Eric T.
    • B41J2/0451B41J2/04541B41J2/04555B41J2/0458B41J2/14153B41J2/16579B41J2/2142B41J2002/14354
    • The present subject matter relates to evaluating print head nozzle condition of a plurality of nozzle columns. Each of the plurality of nozzle columns comprises a set of nozzles. A plurality of drive bubble detect modules are activated, by a timing circuit coupled to each of the plurality of nozzle columns upon occurrence of at least a first predetermined time instant and a second predetermined time instant. For each of the plurality of nozzle columns, test results for a nozzle of the nozzle column are registered by the corresponding drive bubble detect module. Test results obtained based on impedances measured across a nozzle associated with the nozzle column corresponding to a drive bubble detect module are registered by the drive bubble detect module at the first predetermined time instant and the second predetermined time instant. The print head nozzle condition of the nozzle is evaluated based on the test results.
    • 本主题涉及评估多个喷嘴列的打印头喷嘴状况。 多个喷嘴列中的每一个包括一组喷嘴。 多个驱动气泡检测模块通过在发生至少第一预定时刻和第二预定时刻时与多个喷嘴列中的每一个相连接的定时电路来激活。 对于多个喷嘴列中的每一个,喷嘴列的喷嘴的测试结果由相应的驱动气泡检测模块记录。 基于与驱动气泡检测模块相对应的与喷嘴列相关联的喷嘴测量的阻抗获得的测试结果由驱动气泡检测模块在第一预定时刻和第二预定时刻记录。 基于测试结果评估喷嘴的打印头喷嘴状况。