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：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：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：US4819008A

公开(公告)日：1989-04-04

申请号：US75296

申请日：1987-07-17

申请人： Hitoshi Nagato ,  Shuzo Hirahara ,  Tadayoshi Ohno

发明人： Hitoshi Nagato ,  Shuzo Hirahara ,  Tadayoshi Ohno

IPC分类号： B41J2/35 ,  B41J2/365 ,  G06K15/02 ,  G01D15/10 ,  H04N1/22

CPC分类号： B41J2/365 ,  B41J2/35 ,  G06K15/028

摘要： A thermal head driver circuit is disclosed, which comprises a thermal head including a plurality of heat generation elements in an array, a shift register for storing image data including a plurality of bits for a plurality of heat generation elements, signal generation circuit for generating a print signal having a duration corresponding to image data for each of said heat generation elements held in said shift register, and driving circuit for energizing the heat generation elements of the thermal head according to the print signal. The shift register has parallel data input terminals, to which all of image data including a plurality of bits for each of said heat generation elements are fed at a time. Image data is supplied in a single transfer from an external device to the driver circuit. The signal generation circuit includes a counter for counting a clock signal, a plurality of comparators for comparing the count of the counter and image data of each heat generation element and providing an output signal when the count of the counter is greater than image data of each heat generation element, and a plurality of gates, to which the print signal and the output signals of the plurality of comparators are fed.

摘要翻译： 公开了一种热敏头驱动器电路，其包括具有阵列中的多个发热元件的热​​敏头，用于存储包括多个发热元件的多个位的图像数据的移位寄存器，用于生成 具有与保持在所述移位寄存器中的每个所述发热元件的图像数据相对应的持续时间的打印信号，以及根据打印信号激励热敏头的发热元件的驱动电路。 移位寄存器具有并行数据输入端子，其中包括用于每个所述发热元件的多个位的所有图像数据一次被馈送到该数据输入端子。 图像数据以从外部设备到驱动器电路的单次传输提供。 信号发生电路包括用于计数时钟信号的计数器，用于比较每个发热元件的计数器计数和图像数据的多个比较器，并且当计数器的计数大于每个发热元件的图像数据时提供输出信号 发热元件和多个栅极，多个比较器的打印信号和输出信号被馈送到多个栅极。

公开(公告)号：US5138348A

公开(公告)日：1992-08-11

申请号：US453298

申请日：1989-12-22

申请人： Yasuo Hosaka ,  Tadayoshi Ohno ,  Hideyuki Nakano ,  Hitoshi Nagato

发明人： Yasuo Hosaka ,  Tadayoshi Ohno ,  Hideyuki Nakano ,  Hitoshi Nagato

IPC分类号： B41J2/415 ,  G03G15/32

CPC分类号： B41J2/415 ,  G03G15/323

摘要： An apparatus for ion recording using an apparatus for generating ions which can be operated by a low signal voltage. The corona ions are controlled either by imposing the low signal voltage which changes the voltage level of the corona ion generation section above and below the critical voltage for corona ion generation, or by controlling the flows of constantly generated corona ions using the low signal voltage which changes the relative voltage level of the corona ion generation section in order to turn the flows of corona ions on and off.

摘要翻译： 一种用于产生可由低信号电压操作的离子的装置进行离子记录的装置。 通过施加将电晕离子产生部分的电压电平改变到用于电晕离子产生的临界电压以上的低信号电压，或通过使用低信号电压控制不断产生的电晕离子的流动来控制电晕离子， 改变电晕离子产生部分的相对电压电平，以便打开和关闭电晕离子流。

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.