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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。
    • 2. 发明授权
    • Liquid jet recording head having tapered liquid passages
    • 具有锥形液体通道的液体喷射记录头
    • US06224197B1
    • 2001-05-01
    • US08968878
    • 1997-11-05
    • Shinichi HirasawaMasayoshi Tachihara
    • Shinichi HirasawaMasayoshi Tachihara
    • B41J205
    • B41J2/1404B41J2002/14379
    • A liquid jet recording head includes a plurality of ejection outlets through which droplets of liquid are ejected by thermal energy, a plurality of liquid passages communicating with the ejection outlets to supply the liquid, a plurality of supply inlets for supplying the liquid to the passages and a plurality of electro-thermal transducers provided for the respective ejection outlets to produce the thermal energy. Each of the electro-thermal transducers has a heating surface, on the bottom of a corresponding passage, for heating the liquid, and the width of each passage measured in the direction in which the passages are arranged is a maximum at a position between an end of the electro-thermal transducer element near the ejection outlet and an end thereof near the supply inlet, and the width decreases both toward the ejection outlet and toward the supply inlet. This allows the bubble created in the passage by the transducer to expand freely and provides energy-efficient droplet ejection.
    • 液体喷射记录头包括多个喷射出口,液体通过该喷射出口通过热能喷射,多个液体通道与喷射出口连通以供应液体;多个供应入口,用于将液体供应到通道;以及 多个电热换能器设置用于相应的喷射口以产生热能。 每个电热换能器在对应的通道的底部上具有用于加热液体的加热表面,并且沿通道布置的方向测量的每个通道的宽度在端部之间的位置处是最大的 的电热换能器元件和靠近供应入口的端部,并且宽度朝向喷射出口朝向供给入口减小。 这使得传感器在通道中产生的气泡可以自由地膨胀并提供节能的液滴喷射。
    • 5. 发明申请
    • OPTIMUM DESIGN METHOD AND APPARATUS, AND PROGRAM FOR THE SAME
    • 最佳设计方法和设备及其相关程序
    • US20080015828A1
    • 2008-01-17
    • US11778367
    • 2007-07-16
    • Teruyoshi WashizawaAkira AsaiMasayoshi TachiharaKatsuhiko SinjoNobuhiro Yoshikawa
    • Teruyoshi WashizawaAkira AsaiMasayoshi TachiharaKatsuhiko SinjoNobuhiro Yoshikawa
    • G06F17/10
    • G06F17/11
    • In an optimum design method comprising a first solution determining step of solving an optimization problem of a first evaluation function for a state variable vector with a design variable vector being as a parameter, and a second solution determining step of solving an optimization problem of a second evaluation function for the design variable vector and the state variable vector thus obtained, the second solution determining step includes the steps of computing a gradient vector of the second evaluation function for the design variable vector, computing a first coefficient based on a value of a norm of the gradient vector, computing a search vector based on the first coefficient, computing a second coefficient, and updating the design variable vector based on the second coefficient. The second coefficient computing step includes the first solution determining step, the first solution determining step is executed as an iterative method based on the gradient vector, and the state variable vector is not initialized during iteration. The optimum design method is precisely adaptable for structural changes.
    • 一种最优设计方法,包括:第一解决方案确定步骤,用于以设计变量向量作为参数来求解用于状态变量向量的第一评估函数的优化问题;以及第二解决方案确定步骤,用于求解第二 第二解决方案确定步骤包括以下步骤:计算用于设计变量向量的第二评估函数的梯度向量,基于规范的值计算第一系数;对于设计变量向量和状态变量向量的评估函数, 的梯度向量,基于第一系数计算搜索向量,计算第二系数,并且基于第二系数更新设计变量向量。 第二系数计算步骤包括第一解决方案确定步骤,基于梯度向量作为迭代方法执行第一解决方案确定步骤,并且在迭代期间不初始化状态变量向量。 最佳设计方法适用于结构变化。
    • 10. 发明授权
    • Image processing method
    • 图像处理方法
    • US5633728A
    • 1997-05-27
    • US534163
    • 1995-09-26
    • Masayoshi TachiharaAkira Asai
    • Masayoshi TachiharaAkira Asai
    • G06T9/00H04N1/41H04N5/781H04N5/926H04N9/804H04N1/407H04N7/12
    • H04N5/9261G06T9/00H04N5/781H04N9/8042
    • A method of recording (preserving) and reproducing an image is disclosed. The x and y axes are assumed on the plane of an original image, the z axis (density axis) is assumed to be perpendicular to the x and y axes, and a space defined by the x, y, and z axes is divided into rectangular solid cells. The volume ratio below a density distribution curved surface of the volume of each rectangular solid is recorded. Upon reproduction, the curved surface is reproduced based on the volume ratios of the rectangular solids which the density distribution curved surface crosses, and those of rectangular solids adjacent thereto.In a four-dimensional Euclidean space defined by an image plane (x,y), a density or brightness D, and time or a frame f, an image is expressed by a solid in this space. This space is divided into four-dimensional rectangular solids, and an amount proportional to the volume of the solid in each rectangular solid is recorded or transmitted. Upon reproduction, the solid is reproduced based on the volume amounts of the rectangular solids and those of rectangular solids adjacent thereto, thereby reproducing a dynamic image.
    • 公开了记录(保存)和再现图像的方法。 x和y轴假设在原始图像的平面上,z轴(密度轴)被假设为垂直于x和y轴,并且由x,y和z轴定义的空间被划分为 矩形固体电池。 记录每个长方体体积的密度分布曲面以下的体积比。 在再现时,基于密度分布曲面交叉的矩形固体的体积比和与其相邻的矩形固体的体积比,再现曲面。 在由图像平面(x,y),密度或亮度D以及时间或帧f限定的四维欧几里得空间中,在该空间中用固体表示图像。 该空间被分成四维矩形固体,并且记录或传输与每个矩形固体中的固体的体积成比例的量。 在再现时,基于矩形固体的体积量和与其相邻的矩形固体的体积量再现固体,从而再现动态图像。