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 |