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公开(公告)号：US08933979B2
公开(公告)日：2015-01-13
申请号：US13293430
申请日：2011-11-10
申请人： Yuichi Seki
发明人： Yuichi Seki
CPC分类号： B41J2/471
摘要： An image forming apparatus comprises a light source, a photosensitive member and a control unit. The light source turns on in response to a driving current supplied based on image data. An electrostatic latent image is formed on the photosensitive member by exposing the photosensitive member to a light beam output from the light source turned on. The control unit controls the value of the driving current supplied to the light source in accordance with a driving state of the light source so that the value of the driving current supplied to the light source differs and changes with the passage of time in accordance with the driving state of the light source prior to the driving current being supplied to the light source.
摘要翻译： 图像形成装置包括光源，感光构件和控制单元。 光源响应于基于图像数据提供的驱动电流而导通。 通过将感光构件暴露于从打开的光源输出的光束，在感光构件上形成静电潜像。 控制单元根据光源的驱动状态来控制提供给光源的驱动电流的值，使得提供给光源的驱动电流的值根据时间的不同而随时间的变化而变化 在驱动电流被提供给光源之前的光源的驱动状态。
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公开(公告)号：US20060290769A1
公开(公告)日：2006-12-28
申请号：US11159880
申请日：2005-06-23
申请人： Chien Liu , William Vetterling
发明人： Chien Liu , William Vetterling
IPC分类号： B41J2/40
摘要： In one aspect of the invention there is disclosed a multicolor thermal imaging system wherein different heating elements on a thermal print head can print on different color-forming layers of a multicolor thermal imaging member in a single pass. The line-printing time is divided into portions, each of which is divided into a plurality of subintervals. All of the pulses within the portions have the same energy. In one embodiment, every pulse has the same amplitude and duration. Different colors are selected for printing during the different portions by varying the fraction of subintervals that contain pulses. This technique allows multiple colors to be printed using a thermal print head with a single strobe signal line. Pulsing patterns may be chosen to reduce the coincidence of pulses provided to multiple print head elements, thereby reducing the peak power requirements of the print head.
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公开(公告)号：US20050062831A1
公开(公告)日：2005-03-24
申请号：US10947299
申请日：2004-09-23
申请人： Hideyasu Ishibashi , Hiroaki Hyuga
发明人： Hideyasu Ishibashi , Hiroaki Hyuga
CPC分类号： H04N1/40031 , G06K15/1209 , G06K15/1247
摘要： An image forming apparatus records an image on a photosensitive material by controlling a light emission amount from a plurality of light emission elements that each emit light in accordance with a supplied light emission control signal. The apparatus has a control signal generation unit and a first and second signal generation sections and a signal switching section. The control signal generation unit generates a first light amount control signal from a density modulation. The second signal generation section generates an ON/OFF control signal and a second light amount control signal as a pair of signals from a combination of a density modulation and an area modulation. The signal switching section generates a light emission control signal by performing signal switching between the first light amount control signal and the pair of the signals. The exposure by the light emission is overlaid. The second light amount control signal has short pulses having pulse widths shorter than a time constant of the initial rising stage of the light emission.
摘要翻译： 图像形成装置通过根据所提供的发光控制信号控制来自多个发光元件的发光量来发光，从而将图像记录在感光材料上。 该装置具有控制信号产生单元和第一和第二信号产生部分和信号切换部分。 控制信号生成单元从密度调制生成第一光量控制信号。 第二信号产生部分从密度调制和面积调制的组合产生作为一对信号的ON / OFF控制信号和第二光量控制信号。 信号切换部通过在第一光量控制信号和一对信号之间进行信号切换来生成发光控制信号。 通过发光的曝光被覆盖。 第二光量控制信号具有脉冲宽度短于发光初始上升阶段的时间常数的短脉冲。
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公开(公告)号：US6014158A
公开(公告)日：2000-01-11
申请号：US841008
申请日：1997-04-29
CPC分类号： G03G15/168 , G03G15/1675 , G03G2215/1652
摘要： An electrostatographic reproduction apparatus having a transfer assembly, including an electrically biased transfer roller in nip relation with a dielectric support member, for effecting transfer of a pigmented marking particle image from an image area of a dielectric support member to a receiver member in transfer relation with the dielectric support member in the transfer nip, a mechanism for cleaning the transfer roller including a control for the electrical bias on the transfer roller. The electrical bias control has a power supply generating an electrical output, of a settable polarity, connected to the transfer roller for applying an electrical bias of a set polarity thereto. A timing signal generator produces signals respectively corresponding to the location of a receiver member relative to the transfer nip. A mechanism, responsive to the signal from the timing signal generator, indicating the passing of the trail edge of a receiver member through the transfer nip, reverses the setting of the polarity of the electrical output from the power supply so as to prevent transfer of residual marking particles from the dielectric support member to the transfer roller.
摘要翻译： 一种具有转印组件的静电复原装置，其包括与电介质支撑构件成夹持关系的电偏置转印辊，用于将着色的标记颗粒图像从电介质支撑构件的图像区域传递到与传送关系的接收器构件 转印辊隙中的电介质支撑构件，用于清洁转印辊的机构，其包括用于转印辊上的电偏压的控制。 电偏置控制具有电源，其产生可设置极性的电输出，该电输出连接到转印辊，用于施加具有一定极性的电偏压。 定时信号发生器产生分别对应于接收器构件相对于转印压区的位置的信号。 响应于来自定时信号发生器的信号的机构，其指示接收器构件的通过转印夹持部分的边缘的通过，从而将来自电源的电输出的极性的设置反转，以防止残余物的传送 将颗粒从电介质支撑构件标记到转印辊上。
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公开(公告)号：US5933178A
公开(公告)日：1999-08-03
申请号：US033684
申请日：1998-03-03
申请人： Noboru Ueno , Akinori Ushikoshi , Fumito Komatsu , Yuki Nakamura
发明人： Noboru Ueno , Akinori Ushikoshi , Fumito Komatsu , Yuki Nakamura
CPC分类号： B41J2/395
摘要： Odd- and even-numbered conductors of recording electrodes, for example, first or second recording electrodes, are divided in the direction in which the conductor at the time of winding are stacked up to form different layers so as to increase the distance between the conductors of the adjoining recording electrodes and reduce the floating electrostatic capacitance.
摘要翻译： 记录电极例如第一或第二记录电极的奇数和偶数编号沿卷绕时的导体层叠的方向分开以形成不同的层，以增加导体之间的距离 的相邻记录电极，并降低浮动静电电容。
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公开(公告)号：US5748217A
公开(公告)日：1998-05-05
申请号：US558876
申请日：1995-11-16
申请人： Arthur E. Bliss
发明人： Arthur E. Bliss
CPC分类号： G03G15/321 , B41J2/40 , G06K15/14
摘要： A power module including an RC circuit is uniquely associated with each of a plurality of electrodes of an electrostatic print head to individually control the rate of charge decay of a voltage disposed thereon. The resistor of the RC circuit is a potentiometer that may be manually adjusted to obtain an optimal decay rate. A paper supply roller and take-up roller accurately position dielectric material, such as a paper web, adjacent to the electrodes of the print head, which is located between the rollers. The electrodes are typically a plurality of wires. The print head moves across the width of paper web to dispose thereon a plurality of charge areas corresponding to a strip of a latent image. Control circuitry synchronizes the movement of the print head and the web to produce a plurality of abutting strips of charge areas, producing a complete latent image. A toner applicator is positioned downstream from the print head to dispose ionized toner particles which adhere to the plurality of charge areas, thereby producing a visible image.
摘要翻译： 包括RC电路的电源模块与静电打印头的多个电极中的每一个唯一地相关联，以分别控制其上设置的电压的电荷衰减速率。 RC电路的电阻是电位器，可以手动调整以获得最佳的衰减率。 供纸辊和卷取辊精确地定位介质材料，例如纸幅，其邻近位于辊之间的打印头的电极。 电极通常是多根电线。 打印头移动穿过纸幅的宽度，以在其上配置与潜像条相对应的多个电荷区域。 控制电路使打印头和卷筒纸的移动同步，以产生多个抵靠的带电荷区域，产生完整的潜像。 调色剂涂布器位于打印头的下游，以设置粘附到多个电荷区的离子化调色剂颗粒，由此产生可视图像。
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公开(公告)号：US5745144A
公开(公告)日：1998-04-28
申请号：US448767
申请日：1995-05-24
申请人： Orrin D. Christy
发明人： Orrin D. Christy
CPC分类号： G03G15/342 , G03G15/34 , G03G15/348 , G03G2217/0016 , G03G2217/005
摘要： A method and apparatus are provided for "field effect imaging" of moving substrates, such as webs of paper. Non-conductive, non-magnetic toner having approximately a 5-20 micron mean particle size is electrically charged to a level of at least about 8 micro Coulombs/gram and then a first roller with a conductive surface is brought into operative association with the electrically charged toner so that toner particles adhere to the surface. The toner particles are preferably maintained in an electrostatic fluidized bed, and charged by a corona element in the bed. An array of pin or stylus primary electrodes are selectively energized or de-energized to provide no-write or write condition, respectively using a computer to switch the electrodes into or out of operative connection to a source of electrical potential. The toner particles are transferred from the first roller to a substrate either directly (after passing past the primary electrodes), or they are first transferred to a second roller which then brings the toner particles into contact with the substrate. If a second roller is utilized, the primary electrodes can be in association with the first roller, or between the first and second rollers for transferring only "write" toner to the second roller.
摘要翻译： 提供了一种用于诸如纸幅之类的移动基板的“场效应成像”的方法和装置。 具有大约5-20微米平均粒度的非导电非磁性调色剂被带电至至少约8微·库仑/克，然后具有导电表面的第一辊与电 使调色剂颗粒附着在表面上。 调色剂颗粒优选保持在静电流化床中，并通过床中的电晕元件充电。 引脚或触笔主电极的阵列分别选择性地通电或断电以提供不写或写入条件，分别使用计算机将电极切换到与电势的操作连接的电极。 调色剂颗粒从第一辊直接（通过主电极之后）转移到基底，或者它们首先转移到第二辊，然后使调色剂颗粒与基底接触。 如果使用第二辊，主电极可以与第一辊相关联，或者在第一和第二辊之间，仅将“写入”调色剂传送到第二辊。
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8.发明授权
公开(公告)号：US5638102A
公开(公告)日：1997-06-10
申请号：US363831
申请日：1994-12-27
申请人： Jun Kawai
发明人： Jun Kawai
CPC分类号： B41J2/39
摘要： In a page or a line printer, a printer head comprises a resilient substrate, as of borosilicate glass, a strain responsive film of a first ferroelectric material, such as lead zirconate titanate, on the substrate, and a voltage responsive film of a second ferroelectric material, such as lead lanthanum zirconate titanate, on the strain responsive film to form a stack. Responsive to a driving signal representative of a pattern, a piezoelectric driving member inverts, into an inverted residual polarization representative of the pattern as a latent image, an initial residual polarization which is preliminarily produced in the voltage responsive film in its thickness direction by application of a driving voltage to the piezoelectric driving electrode member. The signal or the voltage produces in the substrate a travelling elastic wave which gives a strain and an electric voltage in compliance with the strain. The electric voltage gives rise to the residual polarization. Preliminary charged to a polarity opposite to that of the latent image, an electrostatic toner is supplied to a first end of the voltage responsive film and moved towards a second end by a travelling elastic wave produced in the substrate concurrently with supply of the toner to the first end by supplying a signal to the piezoelectric driving electrode member for production of a toner moving travelling elastic wave.
摘要翻译： 在页面或行式打印机中，打印机头包括从硼硅酸盐玻璃制成的弹性基板，第一铁电材料的应变响应薄膜，例如锆钛酸铅，以及第二铁电体的电压响应薄膜 材料，例如锆钛酸铅镧，在应变响应薄膜上形成叠层。 响应于代表图案的驱动信号，压电驱动构件将表示作为潜像的图案的反向残余极化反转为通过施加在电压响应薄膜中预先产生的初始残留极化 对压电驱动电极部件的驱动电压。 信号或电压在基板中产生行进的弹性波，其产生与应变一致的应变和电压。 电压引起残余极化。 初步充电到与潜像的极性相反的极性，静电调色剂被提供给电压响应膜的第一端并且通过在衬底中产生的行进弹性波向第二端移动，同时向 第一端通过向压电驱动电极构件提供信号以产生调色剂移动行进弹性波。
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公开(公告)号：US5602971A
公开(公告)日：1997-02-11
申请号：US437003
申请日：1995-05-08
申请人： Frank Deschuytere
发明人： Frank Deschuytere
CPC分类号： H04N1/40087
摘要： A reproduction method for continuous tone images on an output device having multilevel capabilities is described. The microdots addressable by the output device are arranged into identical tiles. The microdots in a tile get a sequence number, according to a randomised Bayer pattern for which the runlengths of microdots having low sequence numbers are reduced. The sequence is divided into five subsequences. The microdots belonging to the first three subsequences are changed exclusively to higher density levels for decreasing intensity levels, each within a specific intensity range of the input image. The microdots belonging to the last two subsequences are used to more continuously reproduce the image levels. Equivalent microdots within a tile are further differentiated by a second sequence numbering, in order to ensure smooth and precise average density transitions in reproduced continuous tones.
摘要翻译： 描述了具有多级能力的输出装置上的连续色调图像的再现方法。 由输出设备可寻址的微点被布置成相同的瓦片。 根据随机化的拜耳模式，瓦片中的微点获得序列号，其中具有低序列号的微点的游程长度减少。 序列分为五个子序列。 属于前三个子序列的微点被专门改变为较高密度水平，用于降低强度水平，每个在输入图像的特定强度范围内。 属于最后两个子序列的微点用于更连续地再现图像级别。 瓦片内的等效微点通过第二序列编号进一步区分，以确保再现的连续色调中的平滑和精确的平均密度转变。
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公开(公告)号：US4588997A
公开(公告)日：1986-05-13
申请号：US678146
申请日：1984-12-04
申请人： Hsing C. Tuan , Malcolm J. Thompson
发明人： Hsing C. Tuan , Malcolm J. Thompson
CPC分类号： B41J2/40
摘要： An electrographic writing head capable of placing continuous marks upon a record medium in response to the application of a high voltage to selected writing styluses. The writing head includes a substrate upon which stylus electrodes, multiplexed driver circuitry and active devices are integrally fabricated by thin film deposition techniques. For each stylus, there is provided a high voltage thin film transistor and a latching circuit for holding the state of the high voltage transistor for substantially an entire line writing time.
摘要翻译： 一种电子书写头，能够响应于对选定的书写笔写入高电压而将连续标记放置在记录介质上。 写头包括基板，触针电极，多路复用驱动电路和有源器件通过薄片沉积技术整体制成。 对于每个触笔，提供了一个高电压薄膜晶体管和一个用于保持高压晶体管的状态基本上整个行写入时间的锁存电路。
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