Print head, and print pre-heat method and apparatus using the same
    41.
    发明授权
    Print head, and print pre-heat method and apparatus using the same 失效
    打印头,并打印预热方法和使用其的设备

    公开(公告)号:US5867200A

    公开(公告)日:1999-02-02

    申请号:US548515

    申请日:1995-10-26

    摘要: A print head of this invention has a plurality of heater boards, and each heater board has a plurality of heating resistors, driver circuits corresponding to the heating resistors, one shiftregister for inputting serial data, a data latch circuit for latching print data input from the shift register, a pre-heat data latch circuit for latching selection data of selecting one or several of pre-heat signals input from the shift register, and a pre-heat selection circuit for selecting one or a plurality of pre-heat signals in accordance with the selection data latched in the pre-heat data latch circuit. In a print operation, one or several of the plurality of input pre-heat signals are selected to pre-heat the heating resistors, and when a main heat signal is input thereafter, the heating resistors are driven in accordance with the print data latched by the data latch circuit, thus performing the print operation.

    摘要翻译: 本发明的打印头具有多个加热板,并且每个加热板具有多个加热电阻器,对应于加热电阻器的驱动电路,用于输入串行数据的一个移位寄存器,用于锁存从该加热板输入的打印数据的数据锁存电路 移位寄存器,用于锁存从移位寄存器输入的选择一个或几个预热信号的选择数据的预热数据锁存电路,以及用于根据一个或多个预热信号选择一个或多个预热信号的预热选择电路 选择数据被锁存在预热数据锁存电路中。 在打印操作中,选择多个输入预热信号中的一个或多个来预热加热电阻器,并且当其后输入主加热信号时,根据由 数据锁存电路,从而执行打印操作。

    Method of forming an ink jet recording head having an orifice plate with
positioning openings for precisely locating discharge ports in a
recording apparatus
    46.
    发明授权
    Method of forming an ink jet recording head having an orifice plate with positioning openings for precisely locating discharge ports in a recording apparatus 失效
    形成具有孔板的喷墨记录头的方法,所述孔板具有用于在记录装置中精确定位排出口的定位开口

    公开(公告)号:US5659343A

    公开(公告)日:1997-08-19

    申请号:US376374

    申请日:1995-01-23

    IPC分类号: B41J2/05 B41J2/135 B41J2/16

    摘要: An ink jet recording apparatus comprises a recording head for recording on a recording medium, which recording head includes a head body member having a plurality of thermal energy generating elements to discharge liquid for recording and an orifice plate having a plurality of discharge ports for discharging liquid therethrough in response to the thermal energy generated by the generating elements. The orifice plate includes a junction portion attached to the head body member, extension portions protruding from two ends of the junction portion and positioning openings in the extension portions, which positioning openings are precisely located relative to the discharge ports. The apparatus includes positioning pins flanking a head-mounting opening in the apparatus that accepts the head body member, and the positioning pins cooperate with the positioning openings to accurately position the discharge ports in the apparatus when the head body member is inserted in the head-mounting opening.

    摘要翻译: 一种喷墨记录装置,包括用于在记录介质上记录的记录头,该记录头包括具有多个热能产生元件的头本体构件以排出用于记录的液体;以及孔板,具有用于排出液体的多个排出口 响应于由发生元件产生的热能而穿过其。 孔板包括附接到头本体构件的接合部分,从接合部分的两端突出的延伸部分和在延伸部分中的定位开口,该定位开口相对于排出口精确定位。 该装置包括位于装置中头部安装开口侧面的定位销,该头部安装开口接收头部本体构件,并且当头部本体构件插入头部本体构件中时,定位销与定位开口配合以精确地将排出口定位在设备中。 安装开口。

    Signal detecting circuit for digital controller
    47.
    发明授权
    Signal detecting circuit for digital controller 失效
    数字控制器信号检测电路

    公开(公告)号:US5594350A

    公开(公告)日:1997-01-14

    申请号:US347635

    申请日:1994-12-01

    IPC分类号: H02P9/30 G01R27/28

    CPC分类号: H02P9/30

    摘要: An instantaneous value of alternating current signal from an instrument potential transformer 10 or an instrument current transformer 9 is processed with an analog filter 21, 22, the frequency to be used for correction being detected with a frequency detector 103, frequency correction of the gain of the detected signal being performed with a frequency corrector 104, 114 after detecting the root-mean-square value of the frequency, the corrected signal being supplied to a digital automatic voltage regulator 120. Thereby, it is possible to remove a direct current component and absorb a surge in a signal, and to correct the signal in coping with the fluctuation of the input signal to detect a stable signal.

    摘要翻译: 用模拟滤波器21,22处理来自仪器电位变压器10或仪表电流互感器9的交流信号的瞬时值,用频率检测器103检测用于校正的频率,频率校正 检测到的信号在检测到频率的均方根之后用频率校正器104,114进行,校正的信号被提供给数字自动电压调节器120.因此,可以去除直流分量, 吸收信号浪涌,并纠正信号以应对输入信号的波动,以检测稳定的信号。

    Ink jet recording apparatus for recovering recording head
    48.
    发明授权
    Ink jet recording apparatus for recovering recording head 失效
    用于恢复记录头的喷墨记录装置

    公开(公告)号:US5561448A

    公开(公告)日:1996-10-01

    申请号:US31289

    申请日:1993-03-12

    摘要: An ink jet recording apparatus which records by discharging ink onto a recording medium comprises recording head for recording on the recording medium by discharging ink through discharge ports; an ink tank for storing the ink; a first ink flow channel for passing the ink from the ink tank to the recording head; a second ink flow channel for passing the ink from the recording head into the ink tank; a third ink flow channel communicating the ink tank with the first ink channel; a filter provided in the first ink flow channel; and a back flow prevention valve provided in the first, the second and the third ink flow channels.

    摘要翻译: 通过将墨喷射到记录介质上而进行记录的喷墨记录装置包括:通过排出口排放墨水在记录介质上记录的记录头; 用于存储墨水的墨水罐; 用于将油墨从墨罐传送到记录头的第一墨水流动通道; 第二墨水流道,用于将墨从记录头传送到墨槽中; 将墨水罐与第一墨水通道连通的第三墨水流动通道; 设置在第一墨水流路中的过滤器; 以及设置在第一,第二和第三墨水流动通道中的防逆流阀。

    Optical system for color copier
    49.
    发明授权
    Optical system for color copier 失效
    彩色复印机光学系统

    公开(公告)号:US4742371A

    公开(公告)日:1988-05-03

    申请号:US44742

    申请日:1987-05-01

    IPC分类号: G03G15/01

    摘要: An optical system for a color copier in which light images of blue, green and red produced by color separation are formed one on each of three photoconductive elements, then developed by toner of associated colors, and then transferred one upon another onto a paper. A first mirror is disposed in an optical path to which light representative of an image of an original document is led through an image-forming lens and a mirror group. Light reflected by the first mirror is focused onto a first photoconductive element. Light transmitted through the first mirror is split by a second mirror which is located in a position for intercepting a part of the width of a slit for exposure. Light reflected by the second mirror is focused onto a second photoconductive element. Further, light outside the range of the second mirror is reflected by a third mirror to be focused onto a third photoconductive element. The first mirror has a spectral characteristic which reflects light of one of three colors, i.e., blue, green and red while transmitting light of the other two colors. All of the first to third mirrors comprise total reflection mirrors, or only the first mirror comprises a half-mirror. A reflection from the first mirror is of a particular color to which the photoconductive elements show the smallest amount of reaction. Light of wavelengths outside a predetermined range of each color which is to be reflected by any of the mirrors is cut by using the reflection characteristic of the mirror (as well as a transmission characteristic in the case of the half-mirror) and the transmission characteristics of a filter which is associated with the mirror.

    摘要翻译: 一种用于彩色复印机的光学系统,其中通过颜色分离产生的蓝色,绿色和红色的光图像在三个光电导元件中的每一个上形成一个,然后通过相关联的颜色的调色剂显影,然后一个接一个地转印到纸上。 第一反射镜设置在通过成像透镜和反射镜组引导代表原稿的图像的光的光路中。 由第一反射镜反射的光聚焦到第一光导元件上。 透过第一反射镜的光被第二反射镜分开,第二反射镜位于用于遮挡用于曝光的狭缝宽度的一部分的位置。 由第二反射镜反射的光聚焦到第二光导元件上。 此外,第二反射镜的范围之外的光被第三反射镜反射以聚焦到第三光导元件上。 第一反射镜具有反映三种颜色之一的光的光谱特性,即蓝色,绿色和红色,同时透射另外两种颜色的光。 所有第一至第三反射镜均包括全反射镜,或仅第一镜包括半反射镜。 来自第一反射镜的反射具有特定的颜色,光电导元件显示最小量的反应。 通过使用反射镜的反射特性(以及在半反射镜的情况下的透射特性)和透射特性来切割要由任何反射镜反射的每种颜色的预定范围之外的波长的光 与镜子相关联的过滤器。

    Multiple quadrature-phase amplitude modulating system capable of
reducing a peak amplitude
    50.
    发明授权
    Multiple quadrature-phase amplitude modulating system capable of reducing a peak amplitude 失效
    能够减小峰值振幅的多正交相位幅度调制系统

    公开(公告)号:US4675619A

    公开(公告)日:1987-06-23

    申请号:US779217

    申请日:1985-09-23

    IPC分类号: H04L27/34 H04L27/12

    CPC分类号: H04L27/3411

    摘要: In a multiple QAM system in which a pair of quadrature-phase carrier signals is modulated by a first and a second input digital signal, each representative of N or less levels, into a quadrature-phase amplitude modulated signal having M signal points on a phase plane where M is equal to N.sup.2, a code converting unit (41) converts the digital signals according to a predetermined rule into a first and a second modulating signal for use in modulating the carrier signals with the M signal points arranged approximately at a circle of a diameter which is shorter than a diagonal of a square of a side corresponding to the N levels. In a counterpart demodulating system, a pair of demodulated signals is derived from the amplitude modulated signal and converted into reproductions of the respective digital signals according to an inverse of the predetermined rule.

    摘要翻译: 在多QAM系统中,其中一对正交相位载波信号被第一和第二输入数字信号(每个表示N个或更小的电平)调制成具有在相位上具有M个信号点的正交相幅度调制信号 平面,其中M等于N2,代码转换单元(41)根据预定规则将数字信号转换为第一和第二调制信号,以用于调制载波信号,其中M个信号点大致以 直径小于对应于N个电平的一侧的平方的对角线。 在相应的解调系统中,根据预定规则的倒数,从调幅信号中导出一对解调信号,并将其转换成各数字信号的再现。