发明名称 |
Paper sensing in printers |
摘要 |
A paper sensor comprises a moveable grill. The paper sensor is arranged for location within an air flow in a printer, and comprises the grill as a paper-engaging body provided with a plurality of through holes such that air can flow freely through the grill. The grill is operable to move between a first position and a second position. The paper sensor is arranged so that in use a sheet of paper introduced adjacent the grill engages the grill and reduces the air flow through one or more of the holes in the grill, creating a pressure differential across the grill, that pressure differential causing the grill to move from the first position to the second position, and thereby indicating the presence of paper. A printer comprising a paper sensor, and a method of sensing paper is also disclosed. |
申请公布号 |
US8876417(B2) |
申请公布日期 |
2014.11.04 |
申请号 |
US200711829767 |
申请日期 |
2007.07.27 |
申请人 |
Hewlett-Packard Development Company, L.P. |
发明人 |
Kadis Giries;Nagler Sharon;Brusilovski Gregory |
分类号 |
B41J13/00;G03G15/00;B65H7/06;B41J11/00 |
主分类号 |
B41J13/00 |
代理机构 |
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代理人 |
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主权项 |
1. A paper sensor comprising a moveable grill to move in response to contact with paper. |
地址 |
Houston TX US |