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    • 1. 发明授权
    • Heat generating resistor, recording head using such resistor and drive
method therefor
    • 发热电阻,使用这种电阻的记录头及其驱动方法
    • US4719478A
    • 1988-01-12
    • US910727
    • 1986-09-23
    • Masayoshi TachiharaShinichi HirasawaMasami IkedaAkira AsaiHirokazu Komuro
    • Masayoshi TachiharaShinichi HirasawaMasami IkedaAkira AsaiHirokazu Komuro
    • B41J2/14G01D15/16
    • B41J2/14129B41J2/1412B41J2202/11
    • A planar heat generating resistor has a heat generating resistor layer formed on or above a support member and a pair of opposing electrodes formed on the heat generating resistor layer, such that a width of the heat generating layer at the electrode area is larger than a width of the electrodes and a voltage is applied across the electrodes, in which a ratio of a maximum value of a gradient of .phi., .sqroot.(.differential..phi./.differential.x).sup.2 +(.differential..phi./.differential.y).sup.2 to a value of .sqroot.(.differential..phi./.differential.x).sup.2 +(.differential..phi./.differential.y).sup.2 at a center of the resistor is no larger than 1.4 when a Laplace equation .differential..sup.2 /.differential.x.sup.2 +.differential..sup.2 .phi./.differential.y.sup.2 =0 is solved for the heat generating resistor when an orthogonal coordinate system X-Y is defined on the resistor surface, a potential at a point (x,y) on the resistor surface is represented by .phi.(x,y), a boundary value is imparted to an area of a circumferential boundary of the resistor which contacts to one of the electrodes, a different boundary value is imparted to an area which contacts to the other electrode, and a boundary condition in which a differential coefficient of .phi. to a normal direction of the circumferential boundary is zero is imparted to an area which does not contact to any of the electrodes.
    • 平面发热电阻器具有形成在支撑构件上或上方的发热电阻层和形成在发热电阻层上的一对相对电极,使得电极区域处的发热层的宽度大于宽度 的电极上施加电压,其中phi,2ROOT(DIFFERENTIAL phi / DIFFERENTIAL x)2(DIFFERENTIAL phi / DIFFERENTIAL y)2的梯度的最大值与2ROOT值的比值 当求解拉普拉斯方程差分2 /差分x2 +差分2比特/差分y2 = 0时,电阻中心处的差分phi /差分x)2+(差分phi /差分y)2不大于1.4 电阻器,当电阻表面上定义正交坐标系XY时,电阻表面上的点(x,y)处的电位由phi(x,y)表示,边界值被赋予圆周边界的区域 与电极之一接触的电阻器,赋予与另一个电极接触的区域不同的边界值,并且赋予与周向边界的法线方向的微分系数为零的边界条件 到不与任何电极接触的区域。
    • 10. 发明授权
    • Liquid jet recording head
    • 液体喷射记录头
    • US5455612A
    • 1995-10-03
    • US299798
    • 1994-09-01
    • Masami IkedaHiroto MatsudaHirokazu KomuroHiroto TakahashiMakoto ShibataHisanori Tsuda
    • Masami IkedaHiroto MatsudaHirokazu KomuroHiroto TakahashiMakoto ShibataHisanori Tsuda
    • B41J2/05B41J2/14
    • B41J2/14129B41J2202/03
    • A liquid jet recording head comprises a substrate comprising a support, a resistive heater layer, electrodes electrically connected with the resistive heater layer, a portion of the resistive heater layer located between the electrodes being an electrothermal transducer, and an upper layer comprising a first protective layer comprising an inorganic insulating material, a second protective layer comprising an inorganic material, and a third protective layer comprising an organic material, wherein and the second protective layer and the third protective layer overlap each other in the vicinity of a portion where heat is generated by the electrothermal transducer and the overlapping width of the second protective layer and the third protective layer ranges from 10 .mu.m to 500 .mu.m. In another embodiment, the second protective layer extends along plural liquid flow paths for substantially less than the length thereof in a continuous strip that covers adjacent transducers.
    • 一种液体喷射记录头,包括一个基片,包括一个支架,一个电阻加热器层,与该电阻加热器层电连接的电极,位于电极之间的电阻加热器层的一部分是一个电热转换器,以及一个上层, 包含无机绝缘材料的层,包含无机材料的第二保护层和包含有机材料的第三保护层,其中第二保护层和第三保护层在产生热量的部分附近彼此重叠 通过电热换能器,第二保护层和第三保护层的重叠宽度为10〜500μm。 在另一个实施例中,第二保护层沿着覆盖相邻换能器的连续条带中的多个液体流动路径大体上小于其长度。