发明公开
EP0176732A2 Apparatus and method for limiting the operating temperature of the print head of a printer
失效
装置和用于限制打印头的操作温度在打印机方法。
- 专利标题： Apparatus and method for limiting the operating temperature of the print head of a printer
- 专利标题（中）： 装置和用于限制打印头的操作温度在打印机方法。
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申请号： EP85110394.5申请日： 1985-08-20
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公开(公告)号： EP0176732A2公开(公告)日： 1986-04-09
- 发明人: Alexander, Randall Wayne , Troupes, Demetrios
- 申请人： International Business Machines Corporation
- 申请人地址： Old Orchard Road Armonk, N.Y. 10504 US
- 专利权人： International Business Machines Corporation
- 当前专利权人： International Business Machines Corporation
- 当前专利权人地址： Old Orchard Road Armonk, N.Y. 10504 US
- 代理机构： Atchley, Martin John Waldegrave
- 优先权： US657841 19841004
- 主分类号： B41J3/10
- IPC分类号： B41J3/10
摘要：
The invention relates to apparatus for limiting the operating temperature of the print head (16) of a printer which comprises temperature determining means for determining the operating temperature of the print head, comparison means for comparing the operating temperature with a threshold value, and printer control means for preventing operation of the printer when the print head operating temperature exceeds the threshold value.
The apparatus of the invention is characterised in that the temperature determining means comprises estimating means (110 - 140) for estimating the initial value of the operating temperature and modifying means (115 - 210) responsive to the operation of the printer during predetermined time periods for modifying the estimated operating temperature at the end of each of the time periods based upon the amount of printing performed during the time period and the value of the estimated operating temperature. The printer control means prevents operation of the printer when the estimated print head operating temperature exceeds the threshold value.
The apparatus of the invention is characterised in that the temperature determining means comprises estimating means (110 - 140) for estimating the initial value of the operating temperature and modifying means (115 - 210) responsive to the operation of the printer during predetermined time periods for modifying the estimated operating temperature at the end of each of the time periods based upon the amount of printing performed during the time period and the value of the estimated operating temperature. The printer control means prevents operation of the printer when the estimated print head operating temperature exceeds the threshold value.
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