发明名称 Image forming system and methods thereof
摘要 An image forming system and methods are disclosed. The methods include detecting an ambient temperature of an image forming system by a first thermal sense resistor disposed in a first printhead to obtain a first detected ambient temperature, detecting the ambient temperature of the image forming system by a second thermal sense resistor disposed in a second printhead to obtain a second detected ambient temperature, and determining a temperature difference between the first detected ambient temperature and the second detected ambient temperature of the image forming system by a temperature variation module.
申请公布号 US9162442(B2) 申请公布日期 2015.10.20
申请号 US201114345380 申请日期 2011.09.23
申请人 Hewlett-Packard Development Company, L.P. 发明人 Rice Huston W;Novak David B;Ness Erik D
分类号 B41J29/38;B41J2/045;B41J2/365;G01K13/00 主分类号 B41J29/38
代理机构 Hewlett-Packard Patent Department 代理人 Hewlett-Packard Patent Department
主权项 1. A method of detecting defective printheads in an image forming system, the method comprising: detecting an ambient temperature of an image forming system by a first thermal sense resistor disposed in a first printhead to obtain a first detected ambient temperature; detecting the ambient temperature of the image forming system by a second thermal sense resistor disposed in a second printhead to obtain a second detected ambient temperature; determining a temperature difference between the first detected ambient temperature and the second detected ambient temperature of the image forming system by a temperature variation module; comparing the temperature difference determined by the temperature variation module with a temperature parameter by a temperature comparison module; and identifying whether at least one of the first printhead and the second printhead is a defective candidate by a status identification module in response to a resultant comparison of the temperature comparison module.
地址 Houston TX US