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公开(公告)号:US20060001687A1
公开(公告)日:2006-01-05
申请号:US10880904
申请日:2004-06-30
申请人: James Bush , Marenz Ganadillo , Tommy Lowe , Bryan McKinley , Douglas Robertson
发明人: James Bush , Marenz Ganadillo , Tommy Lowe , Bryan McKinley , Douglas Robertson
IPC分类号: B41J29/393
CPC分类号: B41J2/17546
摘要: The invention provides a system and method for detecting the presence of an ink jet printhead when a printhead controller fails to properly identify an installed printhead using a printhead identification device. The system includes a printhead including heater resistors and control elements, and a controller connected to the printhead via address and data lines. When the controller fails to properly identify an installed printhead, the controller operates to bias the control elements in a predetermined manner via at least one address line, detect a signal via the data lines, and generate a signal indicative of the presence of the installed printhead.