公开(公告)号：US5168313A

公开(公告)日：1992-12-01

申请号：US343621

申请日：1989-04-27

申请人： Yasuo Hosaka ,  Tadayoshi Ohno ,  Tsutomu Kanai

发明人： Yasuo Hosaka ,  Tadayoshi Ohno ,  Tsutomu Kanai

IPC分类号： G03G15/09 ,  G03G15/16

CPC分类号： G03G15/09 ,  G03G15/1685

摘要： A method and device of toner image transfer for an electrophotographic printing apparatus capable of obtaining stable high quality images regardless of the environmental conditions. The device includes a transfer roller having an outermost resistive layer; a flexible conductive layer inside the outermost resistive layer which is electrically connected to the resistive layer; an elastically deformable elastic sponge rubber layer inside the conductive layer; a metallic shaft inside the elastic sponge rubber layer to which a transfer bias voltage is applied; and an elastically deformable elastic conductive portion electrically connecting the metallic shaft and the conductive layer. In carrying out the method, the transfer bias voltage is applied in pulsed form. Also, an area to be transferred is detected by a sensor, so that toner is supplied only to the detected area, while controlling a leveling blade located around a sleeve of a developing device for limiting the amount of toner on the sleeve, such that an amount of the toner supplied from the sleeve is changed.

公开(公告)号：US5099259A

公开(公告)日：1992-03-24

申请号：US501414

申请日：1990-03-22

申请人： Shuzo Hirahara ,  Hitoshi Nagato ,  Kazuhiko Higuchi ,  Kiyoshi Yamada ,  Tadayoshi Ohno ,  Tsutomu Kanai

发明人： Shuzo Hirahara ,  Hitoshi Nagato ,  Kazuhiko Higuchi ,  Kiyoshi Yamada ,  Tadayoshi Ohno ,  Tsutomu Kanai

IPC分类号： H04N1/40 ,  H04N1/405

CPC分类号： H04N1/40087 ,  H04N1/4058

摘要： A halftone image printing device for printing an image consisting of picture elements arrayed in a zig-zag fashioning. Each picture element is composed of dots forming a quasi-diamond-shaped matrix. The dot matrix is a 2 (row) x 3 (column) matrix with two additional dots located at the top and bottom, respectively. The range of optical density, within which the densities represented by the picture elements fall, is segmented into sub-ranges. Different heating-resistors are assigned to each sub-range of density. The dots printed by the heating-resistors assigned to any sub-range of density forms a "dot pattern" of a specific shape. The first dot pattern has one dot printed on the upper-central part of the rectangular matrix. The second dot pattern has three dots forming an L-shaped pattern, the first dot printed on the upper-central part of the matrix, the second dot printed above the first dot, and the third dot printed to the right of the first dot. The third dot pattern consists of five dots forming a cross, the first dot printed on the upper-central part of the matrix, the second dot printed above the first dot, the third dot printed to the right of the first dot, the fourth dot printed below the first dot, and the fifth dot printed to the left of the first dot. And the fourth dot pattern consists of five dots forming a cross and an additional dot printed immediately below the cross. Of the dots of each dot pattern, the dot on which energy concentrates more than any other dot assumes the same location for all dot patterns.

摘要翻译： 一种半色调图像打印装置，用于打印由以之字形排列的图像元素组成的图像。 每个像素由形成准菱形矩阵的点组成。 点阵是分别位于顶部和底部的两个附加点的2（行）×3（列）矩阵。 由图像元素表示的密度落在其中的光密度的范围被分割成子范围。 不同的加热电阻被分配到密度的每个子范围。 由分配给任何密度子范围的加热电阻器印刷的点形成特定形状的“点图案”。 第一个点图案在矩形矩阵的中央上部印有一个点。 第二点图案具有形成L形图案的三个点，第一个点印刷在矩阵的中心上部，第二个点印在第一个点上方，第三个点打印在第一个点的右侧。 第三点图案由形成十字的五个点组成，第一个点印在矩阵的中心上部，第二个点印在第一个点之上，第三个点印在第一个点的右边，第四个点 打印在第一个点下方，第五个点打印在第一个点的左侧。 而第四个点图案由五个点形成一个十字架，另外一个点在十字架的正下方打印出来。 在每个点图案的点中，能量集中于任何其他点的点对于所有点图案都采用相同的位置。

公开(公告)号：US4724446A

公开(公告)日：1988-02-09

申请号：US821954

申请日：1986-01-24

申请人： Shuzo Hirahara ,  Hitoshi Nagato ,  Kazuhiko Higuchi ,  Kiyoshi Yamada ,  Tadayoshi Ohno ,  Tsutomu Kanai

发明人： Shuzo Hirahara ,  Hitoshi Nagato ,  Kazuhiko Higuchi ,  Kiyoshi Yamada ,  Tadayoshi Ohno ,  Tsutomu Kanai

IPC分类号： H04N1/40 ,  G01D15/10 ,  H04N1/22

CPC分类号： H04N1/40087

摘要： A thermal transfer printing apparatus has a thermal head comprised of a plurality of heating members aligned in line, each of the heating members transferring an ink to printing paper upon heating so as to form one dot, the thermal head moving relative to the printing paper and defining a pixel using m.times.n printing dots (m, n: positive integers). This apparatus further has multilevel dot pattern generating means for storing several binary dot patterns having predetermined dots of the m.times.n dot matrix, and for selecting, upon reception of an image signal indicating the density of each pixel, a binary dot pattern in accordance with the density of each pixel, determining multilevel data for each dot constituting the selected pattern in accordance with the density of each pixel, and generating the multilevel dot pattern in which the data for each dot is determined, and driving means, connected between the multilevel dot pattern generating means and the thermal head, for heating, in correspondence with a multilevel dot pattern, the heating member corresponding to the dot therein so as to transfer an ink onto the printing paper to form a dot pattern formed by dots having a size corresponding to the density of each pixel.

摘要翻译： 一种热转印印刷装置具有由多个加热部件排成一行的热敏头，每个加热部件在加热时将油墨转印到打印纸上，形成一个点，热敏头相对于打印纸移动， 使用mxn打印点（m，n：正整数）定义像素。 该装置还具有用于存储具有m×n点矩阵的预定点的几个二进制点图形的多级点图形生成装置，并且用于在接收到表示每个像素的密度的图像信号时，根据密度选择二进制点图形 根据每个像素的密度确定构成所选图案的每个点的多级数据，并且生成其中确定每个点的数据的多级点图形，以及连接在多级点图案生成之间的驱动装置 装置和热头，用于与多层点图案对应地加热，加热构件对应于其中的点，以便将墨转印到打印纸上以形成由具有对应于密度的尺寸的点形成的点图案 的每个像素。

公开(公告)号：US5005993A

公开(公告)日：1991-04-09

申请号：US517452

申请日：1990-05-04

申请人： Tadayoshi Ohno ,  Hitoshi Nagato ,  Tsutomu Kanai

发明人： Tadayoshi Ohno ,  Hitoshi Nagato ,  Tsutomu Kanai

IPC分类号： B41J2/325 ,  B41J2/42 ,  B41J35/18 ,  B41M5/382 ,  G01D15/10

CPC分类号： B41M5/3825 ,  B41J2/325 ,  B41J35/18

摘要： In an electrothermal printer with a resistive ink ribbon, ink ribbon is fed in a predetermined direction and is contacted with a recording electrode and first and second return electrode which are located upstream and downstream of the predetermined direction with respect to the recording electrode. The first return electrode is directly connected to the ground and the second return electrode is connected to the ground through a resistor. A signal current is supplied from the recording electrode to a conductive layer of the ink ribbon through a resistive layer and the signal current supplied to the conductive layer is supplied to the return electrodes through the resistive layer. Heat is generated at a portion of the ink ribbon, which is contacted with the recording electrode and is applied to the ink layer through the conductive layer, thereby printing an ink of the ink layer to a paper.

公开(公告)号：US5157413A

公开(公告)日：1992-10-20

申请号：US311824

申请日：1989-02-17

申请人： Hitoshi Nagato ,  Tadayoshi Ohno ,  Tsutomu Kanai

发明人： Hitoshi Nagato ,  Tadayoshi Ohno ,  Tsutomu Kanai

IPC分类号： B41J2/325 ,  B41J33/38

CPC分类号： B41J33/38 ,  B41J2/325

摘要： In a thermal ink transfer printer, a print head and ink ribbon are mounted on a carriage which is moved at a first speed in a first direction along a recording paper in a first recording mode and also moved at the first speed in a second direction along the recording paper in the second recording mode. The ink ribbon is continuously fed in the second direction in the first and second modes and slides on the distal end of the print head so that ink is transferred from the ink ribbon onto the paper. Thus, the ink ribbon can be moved, relative to the paper, at a first speed and at a second speed which is different from the first relative speed.

公开(公告)号：US4884080A

公开(公告)日：1989-11-28

申请号：US56763

申请日：1987-06-02

申请人： Shuzo Hirahara ,  Hitoshi Nagato ,  Kazuhiko Higuchi ,  Kiyoshi Yamada ,  Tadayoshi Ohno ,  Tsutomu Kanai ,  Toshikazu Matsui

发明人： Shuzo Hirahara ,  Hitoshi Nagato ,  Kazuhiko Higuchi ,  Kiyoshi Yamada ,  Tadayoshi Ohno ,  Tsutomu Kanai ,  Toshikazu Matsui

IPC分类号： G01D15/10 ,  H04N1/40 ,  H04N1/405 ,  H04N1/52

CPC分类号： H04N1/52 ,  G01D15/10 ,  H04N1/40087 ,  H04N1/4058

摘要： A color image printing apparatus prints one pixel by superposing a predetermined dots of three colors within a 3.times.3 dot matrix in accordance with a density of the pixel. The positions of the printed dots within the dot matrix are stored as a dot pattern for each color. One dot pattern is used for each of a plurality of densities included in one density range. The printing energy for each of the dots included in the dot pattern is controlled in accordance with the density level of the pixel. The dot pattern is different for each color and three dot patterns are stored for each color and for each density range. These three dot patterns are repeatedly used for every three pixels which are continuous in the horizontal direction. These three dot patterns have two or three texture directions. The texture direction other than the vertical direction is different for each color.

摘要翻译： 彩色图像打印设备根据像素的密度，通过在3×3点阵中叠加三种颜色的预定点来打印一个像素。 点阵内的打印点的位置被存储为每种颜色的点阵图形。 一个点图案用于包括在一个密度范围内的多个密度中的每一个。 根据像素的浓度水平来控制点图案中包括的每个点的打印能量。 点阵图案对于每种颜色是不同的，并且针对每个颜色和每个浓度范围存储三个点图案。 对于在水平方向上连续的每三个像素重复使用这三个点图案。 这三个点图案具有两个或三个纹理方向。 垂直方向以外的纹理方向对于每种颜色都是不同的。

公开(公告)号：US4897668A

公开(公告)日：1990-01-30

申请号：US163394

申请日：1988-03-02

申请人： Hitoshi Nagato ,  Tadayoshi Ohno ,  Tsutomu Kanai ,  Akito Iwamoto

发明人： Hitoshi Nagato ,  Tadayoshi Ohno ,  Tsutomu Kanai ,  Akito Iwamoto

IPC分类号： B41J2/325

CPC分类号： B41J2/325

摘要： In an electrothermal printing apparatus, ink ribbon is fed in a predetermined direction and is contacted with a recording electrode and a return electrode which is located upstream of the predetermined direction with respect to the recording electrode. A signal current is supplied from the recording electrode to a conductive layer of the ink ribbon through a resistive layer and the signal current supplied to the conductive layer is supplied to the return electrode through the resistive layer. Heat is generated at a portion of the ink ribbon, which is contacted with the recording electrode and is applied to the ink layer through the conductive layer, thereby printing an ink of the ink layer to a paper.

摘要翻译： 在电热打印装置中，墨带沿预定方向进给，并与相对于记录电极位于预定方向上游的记录电极和返回电极接触。 信号电流通过电阻层从记录电极提供到墨带的导电层，并且提供给导电层的信号​​电流通过电阻层被提供给返回电极。 在墨带的与记录电极接触的部分处产生热量，并通过导电层施加到墨层，从而将油墨层的油墨印刷到纸上。

公开(公告)号：US4890121A

公开(公告)日：1989-12-26

申请号：US41875

申请日：1987-04-23

申请人： Shuzo Hirahara ,  Hitoshi Nagato ,  Kazuhiko Higuchi ,  Kiyoshi Yamada ,  Tadayoshi Ohno ,  Tsutomu Kanai

发明人： Shuzo Hirahara ,  Hitoshi Nagato ,  Kazuhiko Higuchi ,  Kiyoshi Yamada ,  Tadayoshi Ohno ,  Tsutomu Kanai

IPC分类号： G01D15/10 ,  H04N1/40 ,  H04N1/405

CPC分类号： H04N1/40087 ,  G01D15/10

摘要： A halftone image printing device represents an image using a pixel matrix, prints each pixel as a dot pattern constituted by predetermined dots in a dot matrix, and controls the dot pattern and the printing density (multilevel density) of each dot included in the dot pattern in accordance with the density (multilevel) of the pixel. An overall printing density range is divided into four density ranges, i.e., from the lowest to the highest density ranges, and each pixel is defined by a 3.times.3 dot matrix. A dot pattern in the lowest density range has a dot at the center of the matrix, a dot pattern in the next lowest range has dots at the center of the matrix and at positions above and to the right of the center, a dot pattern in the next highest density range has dots at the center of the matrix and at positions above, below, and to the right and left of the center, and a dot pattern in the highest density range has dots at the center of the matrix and at positions above, below, to the right, left, and upper right of the center. In order to print each dot at each density level in each density range, the level of energy supplied to the heating element of the thermal head corresponding to each dot is precisely controlled.

摘要翻译： 半色调图像打印装置表示使用像素矩阵的图像，将每个像素打印为由点阵中的预定点构成的点图案，并且控制点图案中包括的每个点的点图案和打印浓度（多级密度） 根据像素的密度（多级）。 整体打印浓度范围被分为四个浓度范围，即从最低浓度范围到最高浓度范围，每个像素由3×3点阵定义。 最低密度范围中的点图案在矩阵的中心具有点，下一个最低范围中的点图案在矩阵的中心处具有点，并且在中心的上方和右侧的位置处具有点图案 下一个最高密度范围在矩阵的中心处具有点，并且位于中心的上方，下方和右侧以及右侧和右侧的点，并且最高密度范围中的点图案在矩阵的中心处具有点， 在上方，下方，中心右侧，左侧和右上方。 为了在每个密度范围内以每个密度级别打印每个点，精确地控制供应给与每个点对应的热敏头的加热元件的能量水平。

公开(公告)号：US5754103A

公开(公告)日：1998-05-19

申请号：US512407

申请日：1995-08-08

申请人： Tsutomu Kanai ,  Toshihiko Shino ,  Ryuji Oouchi

发明人： Tsutomu Kanai ,  Toshihiko Shino ,  Ryuji Oouchi

IPC分类号： G08B17/00 ,  G08B29/06 ,  G08B29/00

CPC分类号： G08B29/06

摘要： A transmission line-monitoring apparatus which is able to detect the occurrence of a short circuit even when a line has a large resistance and also to speedily disconnect the short-circuited transmission line upon detection of a short circuit. When a short circuit occurs between branched transmission lines on the output side of the apparatus, a short-circuit detection circuit contained in the transmission-line monitoring apparatus detects this short circuit so as to send a short-circuit detection signal to a line-disconnecting control circuit. Then, the control circuit is operated so as to cause a constant current circuit to interrupt the supply of a base current to a transistor, thereby disconnecting a short-circuited output branched transmission line from a corresponding input branched transmission line.

摘要翻译： 一种传输线监视装置，即使线路具有大的电阻也能够检测到短路的发生，并且还能够在短路检测时快速断开短路的传输线路。 当在装置的输出侧的分支传输线路之间发生短路时，包含在传输线监视装置中的短路检测电路检测该短路，以便将短路检测信号发送到线路断开 控制电路。 然后，使控制电路工作，使恒流电路中断向晶体管提供基极电流，从而将短路的输出分支传输线与相应的输入分支传输线断开。

公开(公告)号：US4578703A

公开(公告)日：1986-03-25

申请号：US560908

申请日：1983-12-12

申请人： Tsutomu Kanai

发明人： Tsutomu Kanai

IPC分类号： H04N7/167 ,  H04N7/173

CPC分类号： H04N7/1675

摘要： A wireless subscription television system arranged to transmit ciphered video signals from a transmitter to receivers in which the transmitting system comprises an enable code setting means, a transmitting means for transmitting control signals to allow a respective enable code of a receiving system to be picked up and a converting means for masking said enable codes and sending out masked enable codes, and on the other hand, the receiving system has a plurality of decoder systems each comprising a key code input means, a means for picking up a key code put in by the input means after converting it into an enable code by means of the control signals and a comparator means for determining if the picked-up enable code and the enable code as masked sent from the transmitting system are same or not. Thus, when the both enable codes come to be same, the respective decoder system is set in receivable condition.

摘要翻译： 一种无线订阅电视系统，被布置为将发送的加密视频信号从发射机发射到接收机，其中发射系统包括使能码设置装置，用于发送控制信号以允许接收系统的相应使能码被拾取的发送装置， 用于屏蔽所述使能码并发送屏蔽使能码的转换装置，另一方面，接收系统具有多个解码器系统，每个解码器系统包括键码输入装置，用于拾取由 输入装置，其通过控制信号将其转换成使能码;以及比较器装置，用于确定从发送系统发送的拾取使能码和被屏蔽的使能码是否相同。 因此，当两个使能码相同时，相应的解码器系统被设置为可接收状态。