公开(公告)号：US06494565B1

公开(公告)日：2002-12-17

申请号：US09434981

申请日：1999-11-05

Applicant: Richard N. Ellson ,  Robert P. Kowalski ,  Babur Hadimioglu ,  Thanh Duc Truong

Inventor： Richard N. Ellson ,  Robert P. Kowalski ,  Babur Hadimioglu ,  Thanh Duc Truong

IPC: B41J2135

CPC classification number: B41J2/04541 ,  B41J2/04568 ,  B41J2/0457 ,  B41J2/04571 ,  B41J2/04575

Abstract: An active controller is provided to control operation of an acoustic printhead in which impedance of the printhead changes with both the active printing row and the distribution of active ejectors in the row. The active controller varies the input power to the printhead in response to active ejectors. Power requirements are insured while also reducing power consumption and maintaining print quality. The determination of RF power is based on the active row, how many ink ejectors are to be switched on, and their position within a row. Look-up tables used to determine proper attenuation or power values are provided in a cascaded fashion.

Abstract translation: 提供主动控制器以控制声打印头的操作，其中打印头的阻抗随活动打印行和行中主动喷射器的分布而变化。 主动控制器响应于主动喷射器改变打印头的输入功率。 电源要求被保险，同时也降低功耗并保持打印质量。 RF功率的确定基于活动行，要打开多少个墨水喷射器以及它们在一行内的位置。 用于确定适当衰减或功率值的查找表以级联方式提供。