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公开(公告)号：US5657061A
公开(公告)日：1997-08-12
申请号：US501219
申请日：1995-07-11
IPC分类号： B41J2/125 , B41J2/05 , B41J2/14 , B41J2/175 , B41J2/21 , B41J2/355 , B41J2/36 , B41J2/365 , B41J2/375 , B41J29/377
CPC分类号： B41J2/2128 , B41J2/04528 , B41J2/04563 , B41J2/0458 , B41J2/1408 , B41J2/355 , B41J2/36 , B41J2/365 , B41J2/375 , B41J29/377 , B41J2202/08
摘要： An ink-cooled thermal ink jet printhead has an efficient heat exchanger located on the back side of the printhead that eliminates the need for heat sinks. All ink flowing to the firing chamber goes through the heat exchanger. The geometry of the heat exchanger is chosen so that almost all the residual heat absorbed by the printhead substrate is transferred to the ink as it flows to the firing chamber. Additionally, the pressure drop of the ink flowing through the heat exchanger is low enough so that it does not significantly reduce the refill rate of the firing chambers. The heat exchanger can have one or more active heat exchanger sides. The heat exchanger has little thermal mass itself and significantly reduces the thermal mass of printhead by eliminating the need for a heat sink. This reduces the warm-up time of the printhead to a fraction of a second.
摘要翻译： 一种墨水冷却的热喷墨打印头具有位于打印头后侧的有效的热交换器，其不需要散热片。 所有流入燃烧室的油墨都经过热交换器。 选择热交换器的几何形状，使得打印头基板吸收的几乎所有剩余热量在流到喷射室时被转移到墨水中。 此外，流经热交换器的墨水的压降足够低，使得它不会显着降低燃烧室的再填充速率。 热交换器可以具有一个或多个活性热交换器侧。 热交换器本身具有很少的热量，并且通过消除对散热器的需要而显着地降低了打印头的热质量。 这将打印头的预热时间减少到几分之一秒。
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公开(公告)号：US5459498A
公开(公告)日：1995-10-17
申请号：US982813
申请日：1992-11-30
IPC分类号： B41J2/125 , B41J2/05 , B41J2/14 , B41J2/175 , B41J2/21 , B41J2/355 , B41J2/36 , B41J2/365 , B41J2/375 , B41J29/377
CPC分类号： B41J2/2128 , B41J2/04528 , B41J2/04563 , B41J2/0458 , B41J2/1408 , B41J2/355 , B41J2/36 , B41J2/365 , B41J2/375 , B41J29/377 , B41J2202/08
摘要： An ink-cooled thermal ink jet printhead has an efficient heat exchanger located on the back side of the printhead that eliminates the need for heat sinks. All ink flowing to the firing chamber goes through the heat exchanger. The geometry of the heat exchanger is chosen so that almost all the residual heat absorbed by the printhead substrate is transferred to the ink as it flows to the firing chamber. Additionally, the pressure drop of the ink flowing through the heat exchanger is low enough so that it does not significantly reduce the refill rate of the firing chambers. The heat exchanger can have one or more active heat exchanger sides. The heat exchanger has little thermal mass itself and significantly reduces the thermal mass of printhead by eliminating the need for a heat sink. This reduces the warm-up time of the printhead to a fraction of a second.
摘要翻译： 一种墨水冷却的热喷墨打印头具有位于打印头后侧的有效的热交换器，其不需要散热片。 所有流入燃烧室的油墨都经过热交换器。 选择热交换器的几何形状，使得打印头基板吸收的几乎所有剩余热量在流到喷射室时被转移到墨水中。 此外，流经热交换器的墨水的压降足够低，使得它不会显着降低燃烧室的再填充速率。 热交换器可以具有一个或多个活性热交换器侧。 热交换器本身具有很少的热量，并且通过消除对散热器的需要而显着地降低了打印头的热质量。 这将打印头的预热时间减少到几分之一秒。
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