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公开(公告)号：US5518323A
公开(公告)日：1996-05-21
申请号：US91210
申请日：1993-07-14
申请人： Hiroshi Sakaino , Hideaki Ishimizu , Mitsuru Kishimoto , Noboru Ooishi , Masayuki Ishikawa , Chihiro Komori , Naoji Akutsu , Jiro Tanuma , Tadashi Kasai
发明人： Hiroshi Sakaino , Hideaki Ishimizu , Mitsuru Kishimoto , Noboru Ooishi , Masayuki Ishikawa , Chihiro Komori , Naoji Akutsu , Jiro Tanuma , Tadashi Kasai
IPC分类号： B41J2/30 , B41J11/20 , B41J25/308 , B41J29/46
CPC分类号： B41J25/3082 , B41J25/308
摘要： According to a method of adjusting a head gap, a wire dot head is set to a predetermined position of a reference head gap; a printing pattern for detecting printing time is printed by a plurality of pins; reference printing times of respective pins are detected. Next, a test printing is performed with test printing dots previously selected from printing data, and printing time of the test printing is detected. Then, the thickness of the printing media is calculated based on the reference printing time and the printing time of the test printing. At that time, a rule of thumb in which the difference of the printing time corresponds to the difference of the head gap, is used. Then, a shift amount of the wire dot head is calculated for setting the head gap to an optimum value according to the thickness of the printing media, and gap shifting mechanism shifts the wire dot head by the shift amount. This leads to highly accurate detection of the head gap and improves printing quality thereof.
摘要翻译： 根据调整头部间隙的方法，将丝点头设定在基准头间隙的预定位置; 用于检测打印时间的打印图案由多个针打印; 检测相应引脚的参考打印时间。 接下来，使用先前从打印数据中选择的测试打印点执行测试打印，并且检测打印测试打印时间。 然后，基于参考打印时间和测试打印的打印时间来计算打印介质的厚度。 此时，使用其中打印时间的差异对应于头部间隙的差异的经验法则。 然后，根据打印介质的厚度，计算出打印头间隙的最佳值的位移量，并且间隙移动机构使丝网头移动移位量。 这导致头间隙的高精度检测并提高其打印质量。
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公开(公告)号：US5326183A
公开(公告)日：1994-07-05
申请号：US791389
申请日：1991-11-14
申请人： Tadashi Kasai , Jiro Tanuma , Naoji Akutsu , Hideaki Ishimizu , Chihiro Komori
发明人： Tadashi Kasai , Jiro Tanuma , Naoji Akutsu , Hideaki Ishimizu , Chihiro Komori
CPC分类号： B41J2/5056
摘要： Printing control includes determining printing dot density of print data to be supplied to a printing head, averaging the printing dot density during a predetermined period of time based on the printing dot density determined, selecting a printing speed in response to the average value of printing dot density, and controlling printing to print at the selected printing speed.
摘要翻译： 打印控制包括确定要提供给打印头的打印数据的打印点密度，基于确定的打印点密度在预定时间段期间平均打印点密度，响应于打印点的平均值选择打印速度 密度和控制打印以在所选择的打印速度下打印。
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公开(公告)号：US5071268A
公开(公告)日：1991-12-10
申请号：US431172
申请日：1989-10-26
CPC分类号： B41J2/30
摘要： In a driving apparatus for a wire-dot print head having electromagnets for driving print wires, each electromagnet comprising a core and a coil, sensing coils are provided in association with the respective electromagnets and provided to interlink the magnetic flux passing through the core of the associated electromagnet, a magnetic flux detecting circuit is connected to the sensing coils for detecting the magnetic flux passing through the core, and a control and drive circuit is responsive to the detected magnetic flux for deciding the termination of the energization of the drive coil.
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公开(公告)号：US5064302A
公开(公告)日：1991-11-12
申请号：US514838
申请日：1990-04-26
申请人： Jiro Tanuma , Hideaki Ishimizu , Tadashi Kasai , Chihiro Komori
发明人： Jiro Tanuma , Hideaki Ishimizu , Tadashi Kasai , Chihiro Komori
IPC分类号： B41J2/30
CPC分类号： B41J2/30
摘要： A wire dot printer has a thermistor that detects the temperature of a print head and a counter that starts counting when the detection temperature exceeds an alarm temperature. The printer can be controlled by switching over between normal-printing and reduced-character-printing in which a reduced number of print wires is used. When the detection temperature exceeds the alarm temperature, the printer will first stop and then control the print head in such a way as to reduce the temperature. Once the temperature drops back down below the alarm temperature, the printer will perform reduced-character-printing for a definite period of time based on the length of time from when the temperature exceeded the alarm temperature to when the temperature dropped back down below the alarm temperature. By increasing the length of time in which reduced-character-printing is carried out, the amount of heat given off by the print head decreases. Furthermore, by basing the time over which reduced-character-printing is performed on the length of time that the alarm temperature was exceeded. It is possible to set the reduced-character-printing time to an appropriate length such that the print head does not overheat and throughout is not excessively impaired.
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公开(公告)号：US5087134A
公开(公告)日：1992-02-11
申请号：US504140
申请日：1990-04-03
申请人： Jiro Tanuma , Hideaki Ishimizu , Tadashi Kasai , Chihiro Komori
发明人： Jiro Tanuma , Hideaki Ishimizu , Tadashi Kasai , Chihiro Komori
CPC分类号： B41J19/145 , B41J19/202
摘要： In a printer in which a print head and a print medium are moved relative to each other in a spacing direction and in a line-feed direction, the position of the print head in the spacing direction is detected, and the stoppage of the print head during a spacing operation is detected, and the stop position in the spacing direction is stored. When the print head stops, reverse line-feed is performed by a first amount. The spacing operation is then performed in the same direction as before the carriage stopped. A forward line-feed is then performed by the first amount, and then the spacing operation is performed in the opposite direction. If the print head stops again at the same stop positon, an error indication is made. If the print head does not so stop, the spacing operation is continued.
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公开(公告)号：US5330277A
公开(公告)日：1994-07-19
申请号：US964260
申请日：1992-10-21
申请人： Tadashi Kasai , Takao Uchida , Jiro Tanuma , Naoji Akutsu , Chihiro Komori
发明人： Tadashi Kasai , Takao Uchida , Jiro Tanuma , Naoji Akutsu , Chihiro Komori
IPC分类号： B41J2/30
CPC分类号： B41J2/30
摘要： A drive system for a wire dot head is provided with sensors for detecting displacements of corresponding print wires. Each sensor outputs a movement initiation timing signal and an impact timing signal for the corresponding print wire. An electric current to be fed to an associated coil is normally controlled by these timing signals. It is detected whether these timing signals are obtained in a predetermined time period. If not, electric power is continuously fed to the coil or is forcedly cut off so that the timing signals are obtained within the predetermine time period.
摘要翻译： 用于线点头的驱动系统设置有用于检测相应打印线的位移的传感器。 每个传感器输出针对相应打印线的运动启动定时信号和冲击定时信号。 馈送到相关线圈的电流通常由这些定时信号控制。 检测这些定时信号是否在预定时间段内获得。 如果不是，则将电力连续馈送到线圈或强制切断，使得在预定时间段内获得定时信号。
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公开(公告)号：US5039237A
公开(公告)日：1991-08-13
申请号：US452381
申请日：1989-12-19
申请人： Jiro Tanuma , Hideaki Ishimizu , Tadashi Kasai , Hiroshi Sakaino
发明人： Jiro Tanuma , Hideaki Ishimizu , Tadashi Kasai , Hiroshi Sakaino
IPC分类号： B41J2/30
CPC分类号： B41J2/30
摘要： In a dot matrix print head drive method for controlling head drive signals for driving dot pins in accordance with print pattern signals, a correction factor is set specifically to each dot pin; and the length of time for which the print pattern signals are to remain in effects is varied according to the correction factor, to correct the drive time for each dot pin.
摘要翻译： 在用于根据打印图案信号控制用于驱动点针的头驱动信号的点阵打印头驱动方法中，对每个点针专门设置校正因子; 并且打印图案信号保持效果的时间长度根据校正因子而变化，以校正每个点针的驱动时间。
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公开(公告)号：US4825133A
公开(公告)日：1989-04-25
申请号：US79453
申请日：1987-07-30
申请人： Jiro Tanuma , Naoji Akutsu , Tadashi Kasai
发明人： Jiro Tanuma , Naoji Akutsu , Tadashi Kasai
摘要： An electromechanical actuator includes an electric motor and a control and drive circuit mounted integrally with the electric motor. The control and drive circuit includes a serial-to-parallel converter for converting a control signal in the form of serial data into parallel data, and a device responsive to the control signal in the form of parallel data for producing a drive current or voltage for the electric motor. A system for accessing or controlling a plurality of such actuators by commands from a main controller can include a control and drive circuit which is integral with the motor itself.
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公开(公告)号：US4918365A
公开(公告)日：1990-04-17
申请号：US288974
申请日：1988-12-23
申请人： Jiro Tanuma , Naoji Akutsu , Tadashi Kasai
发明人： Jiro Tanuma , Naoji Akutsu , Tadashi Kasai
摘要： An electromechanical actuator includes an electric motor and a control and drive circuit mounted integrally with the electric motor. The control and drive circuit includes a serial-to-parallel converter for converting a control signal in the form of serial data into parallel data, and a device responsive to the control signal in the form of parallel data for producing a drive current or voltage for the electric motor. A system for accessing or controlling a plurality of such actuators by commands from a main controller can include a control and drive circuit which is integral with the motor itself.
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公开(公告)号：US5482387A
公开(公告)日：1996-01-09
申请号：US292601
申请日：1994-08-18
申请人： Jiro Tanuma , Hideaki Ishimizu , Akira Hagiwara , Tadashi Kasai
发明人： Jiro Tanuma , Hideaki Ishimizu , Akira Hagiwara , Tadashi Kasai
摘要： In a dot print head of an impact type moved in a direction of spacing movement relative to a printing medium, and having a plurality of printing elements each having a printing wire arranged substantially in an elongated circle centered at a line parallel with the direction in which the printing elements are driven, and which is provided with a wire guide having guide elements for the respective printing wires for guiding tips of the printing wires to predetermined positions on said printing medium, the guide elements are divided into at least four rows each extending in the direction orthogonal to said direction of the spacing movement and orthogonal to the direction in which the printing wires extend, and distances between said rows are multiples of 1/240 inches. Each of the printing elements is driven for printing either at a reference timing which occurs once a standard printing cycle having a standard period, at a timing 1/4 of the standard period past said reference timing, at a timing half the standard period past said reference timing, or at a timing 3/4 of the standard period past said reference timing.
摘要翻译： 在相对于打印介质在间隔移动方向上移动的冲击类型的点打印头中，并且具有多个打印元件，每个印刷元件具有基本上布置在以与其中与 打印元件被驱动，并且其设置有导线器，其具有用于将印刷线的尖端引导到所述打印介质上的预定位置的各个印刷线的引导元件，所述引导元件被分成至少四行，每列延伸到 与所述间隔运动的所述方向正交的方向与印刷线延伸的方向正交的方向，并且所述行之间的距离为1/240英寸的倍数。 每个打印元件被驱动以便在参考定时进行打印，该参考定时是在标准周期之后出现的标准周期，在标准周期过去所述参考定时的时间的1/4处，在标准周期的一半以上， 参考定时，或在标准周期的3/4之后经过所述参考定时。
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