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1. 发明授权

US06494553B1 Ink level sensing for ink printer 有权
标题翻译：墨水打印机墨水量检测
公开(公告)号：US06494553B1
公开(公告)日：2002-12-17
申请号：US09878490
申请日：2001-06-11
申请人： Frederick A. Donahue , Richard E. Butts , Ronald C. Macera
发明人： Frederick A. Donahue , Richard E. Butts , Ronald C. Macera
IPC分类号： B41J2195
CPC分类号： B41J2/1752 , B41J2/17566
摘要： An ink jet printer that includes a printhead for ejecting ink droplets, an ink container for supplying ink to the printhead, and an ink level sensor for measuring the level of ink in the ink container, includes an ink level sensor activator. The ink level sensor activator causes the ink level sensor to measure the level of ink in the ink container after the printhead has ejected a predetermined quantity of ink. The ink level sensor activator records the quantity of ink ejected by the printhead onto the print medium by measuring to the number of droplets of ink ejected, and/or by determining the number of pixels in an image to be printed for which ink is to be ejected. If the quantity of ink ejected has a predetermined threshold, the ink level sensor measures the quantity of ink in the ink container.
摘要翻译：一种喷墨打印机，包括用于喷射墨滴的打印头，用于向打印头供墨的墨盒和用于测量墨水容器中墨水量的墨水位传感器，包括墨水位传感器激活器。墨水量传感器激活器使得墨水量传感器在打印头喷出预定量的墨水之后测量墨水容器中的墨水量。墨水量传感器启动器通过测量喷射的墨滴的数量和/或通过确定要印刷的图像中的像素的数量来将打印头喷射的墨水量记录到打印介质上弹出如果喷射的墨水量具有预定的阈值，则墨水量传感器测量墨水容器中的墨水量。

2. 发明申请

US20110205263A1 CONTROLLABLE MAINTENANCE OPERATIONS FOR EFFICIENT INK USE 有权
标题翻译：有效的维护使用的可控维护操作
公开(公告)号：US20110205263A1
公开(公告)日：2011-08-25
申请号：US12711354
申请日：2010-02-24
申请人： Frederick A. Donahue , Donald V. Brumbaugh , Gary A. Kneezel
发明人： Frederick A. Donahue , Donald V. Brumbaugh , Gary A. Kneezel
IPC分类号： B41J29/38
CPC分类号： B41J2/1753 , B41J2/16517 , B41J2/17546 , B41J2/17553 , B41J2/17566 , B41J2002/17569
摘要： A method of controlling in a printer the maintenance of an inkjet printhead supplied with fluid from a plurality of fluid sources, the method includes the steps of (a) monitoring the usage of the plurality of fluid sources; (b) identifying a preferred fluid source for use in a maintenance operation based on the monitored usage of the plurality of fluid sources; and (c) performing the maintenance operation using a first quantity of fluid from the preferred fluid source.
摘要翻译：一种在打印机中控制从多个流体源供应流体的喷墨打印头的维护的方法，所述方法包括以下步骤：（a）监视所述多个流体源的使用; （b）基于所监视的多个流体源的使用，识别用于维护操作的优选流体源; 和（c）使用来自优选流体源的第一量的流体进行维护操作。

3. 发明授权

US07030972B2 System and method for identifying objects 失效
公开(公告)号：US07030972B2
公开(公告)日：2006-04-18
申请号：US10073091
申请日：2002-02-12
申请人： Frederick A. Donahue , Eric A. Merz
发明人： Frederick A. Donahue , Eric A. Merz
IPC分类号： G06K9/74
CPC分类号： B41J29/393 , B41J2/17546
摘要： Method and system for detecting the presence and determining characteristics of objects such as ink cartridges in printing systems. The system includes a signal transceiver capable of transmitting signals using a photo emitter and capable of receiving signals sent from the objects using a photo detector, and a monitoring system coupled to the signal transceiver for processing received signals to determine characteristics of the objects. Further, the photo emitter is at least partially covered by a first optical polarizer and the objects include a reflective surface that is at least partially covered by a second optical polarizer. When signals are transmitted from the signal transceiver to the objects, the second optical polarizer allows the signals to reach the reflective surface and reflect back towards the signal transceiver if the orientations of the first and second optical polarizers are substantially the same.

4. 发明授权

US5692108A Odd/even stroke control for reduced video data clocking 失效
标题翻译：用于缩小视频数据时钟的奇数/偶数行程控制
公开(公告)号：US5692108A
公开(公告)日：1997-11-25
申请号：US312382
申请日：1994-09-26
申请人： Frederick A. Donahue
发明人： Frederick A. Donahue
IPC分类号： B41J2/01 , B41J2/205 , B41J2/485 , G06K15/10 , G06K15/00
CPC分类号： G06K15/107 , B41J2/205 , G06K2215/0074
摘要： A method and apparatus for checkerboard printing by a liquid ink printing apparatus. A liquid ink printing apparatus, such as a thermal ink jet printer, includes circuitry for reducing video data clocking in checkerboard printing by controlling the odd and even vertical print strokes of a reciprocating printhead mounted to a scanning carriage. The amount of bitmapped imaged data, also known as video data, is reduced by one half or more and sent to the printhead for printing checkerboard patterns. Reduction of the bitmapped image data is accomplished by a data packer circuit which selects certain bits of the bitmapped image data for printing by the printhead in a checkerboard pattern. At the printhead, the bitmapped image is reconstructed by a data unpacker circuit to cause selective ejection of ink from the appropriate nozzles of the printhead. Two or more passes information are printed to complete printing of the bitmapped image data.
摘要翻译：一种用于通过液体墨水打印装置进行棋盘印刷的方法和装置。诸如热喷墨打印机的液体墨水打印设备包括通过控制安装到扫描托架的往复打印头的奇数和偶数垂直打印笔划来减少棋盘打印中的视频数据时钟的电路。位图成像数据的数量（也称为视频数据）减少一半或更多，并发送到打印头以打印棋盘图案。位图图像数据的减少由数据打包器电路完成，该数据打包器电路选择位图图像数据的特定位以由打印头以棋盘图案打印。在打印头处，位图图像由数据解包器电路重构，以便从打印头的适当喷嘴选择性地排出墨水。打印两个或多个通过信息以完成打印位图图像数据。

5. 发明授权

US4577096A Multiple copy and transparency detector with illumination control 失效
标题翻译：多重复印和透明度检测器，带照明控制
公开(公告)号：US4577096A
公开(公告)日：1986-03-18
申请号：US523516
申请日：1983-08-15
申请人： Jack Beery , Frederick A. Donahue , Ronald E. Shaul
发明人： Jack Beery , Frederick A. Donahue , Ronald E. Shaul
IPC分类号： B65H7/12 , B65H7/14 , G03G15/00 , G01J1/32
CPC分类号： G03G15/65 , B65H7/125 , B65H7/14 , G03G15/703 , G03G2215/00371 , G03G2215/00611 , G03G2215/00616 , G03G2215/00721
摘要： A sheet detector having an emitter (lamp), detector (phototransistor), operational amplifier and an RC network. As contamination is deposited on the emitter or detector, a feedback loop provides more drive to the lamp providing sufficient drive to hold the emitter of the phototransistor at its desired stage. As a first copy paper is passed between the emitter and detector, the RC network of a common mode operational amplifier detects a change and generates an output. As a subsequent sheet enters the system, the transmissibility abruptly changes again causing the common mode operational amplifier to provide a subsequent pulse indicating the presence of a multiple feed.
摘要翻译：具有发射器（灯），检测器（光电晶体管），运算放大器和RC网络的片材检测器。当污染物沉积在发射器或检测器上时，反馈回路为灯提供更多的驱动，提供充分的驱动以将光电晶体管的发射极保持在其期望的阶段。当第一个复印纸在发射器和检测器之间通过时，共模运算放大器的RC网络检测到一个变化并产生一个输出。当随后的片材进入系统时，透射率再次突然改变，使得共模运算放大器提供指示多次进给的存在的后续脉冲。

6. 发明授权

US08136905B2 Drop volume compensation for ink supply variation 有权
标题翻译：降墨量补偿供墨变化
公开(公告)号：US08136905B2
公开(公告)日：2012-03-20
申请号：US12146641
申请日：2008-06-26
申请人： Gary A. Kneezel , R. Winfield Trafton , Frederick A. Donahue
发明人： Gary A. Kneezel , R. Winfield Trafton , Frederick A. Donahue
IPC分类号： B41J29/38 , B41J29/393
CPC分类号： B41J2/17513 , B41J2/04535 , B41J2/0456 , B41J2/0458 , B41J2/04588 , B41J2/1752 , B41J2/17523 , B41J2/17556
摘要： The present invention relates to a method that enables image quality of a printed image to be maintained by reducing unintended variations in drop volume, through the adjustment of ink drop ejecting conditions depending on the amount of ink remaining in an ink tank chamber or reservoir, and/or the ink demand for printing an image. The method of printing of the present invention comprises: providing a printhead in fluid communication with an ink chamber or reservoir; detecting at least one parameter related to an amount of negative pressure provided to the printhead; and adjusting an ink drop ejecting condition of the printhead as a function of the parameter so that an amount of variation in size of ejected ink drop is reduced.
摘要翻译：本发明涉及通过根据墨罐室或储存器中残留的墨量调整墨滴喷射条件，通过减少墨滴体积的非预期变化来保持打印图像的图像质量的方法，以及 /或打印图像的墨水需求。本发明的印刷方法包括：提供与墨水室或储存器流体连通的打印头; 检测与提供给打印头的负压量有关的至少一个参数; 以及根据参数来调整打印头的墨滴喷射状态，使得喷射墨滴的尺寸变化量减小。

7. 发明授权

US06174037B1 Multiple pass ink jet printer with optimized power supply 失效
标题翻译：多通道喷墨打印机具有优化的电源
公开(公告)号：US06174037B1
公开(公告)日：2001-01-16
申请号：US08867644
申请日：1997-06-02
申请人： Frederick A. Donahue , Donald M. Stevens
发明人： Frederick A. Donahue , Donald M. Stevens
IPC分类号： B41J2938
CPC分类号： B41J29/38
摘要： A liquid ink printer in which liquid ink is deposited on a recording medium in swaths in response to image data received thereby including a power supply, having a maximum power rating determined as a function of a number of passes per swath necessary to compete a swath having maximum ink coverage. The printer includes a print power regulation circuit, including a regulation circuit input, for receiving the image data, and a regulation circuit output, for transmitting image data in a number of passes per swath, the number of passes per swath being determined as a function of the maximum power rating, and a liquid ink printhead, coupled to the power supply and to the print power regulation circuit, for ejecting the liquid ink according to the transmitted image data. A printer driver, which can include the print power regulation circuit, determines the amount of ink coverage to complete a received swath of information and in response thereto determines the number of passes necessary to complete the printing of the swath. The power rating of the controlled according to the number of passes per swath and provides for an optimized power supply.
摘要翻译：一种液体墨水打印机，其中响应于从其接收的图像数据，将液体墨水沉积在记录介质上，其中包括电源，该电源具有根据每个条带的通过数量确定的最大功率等级，最大墨水覆盖率。打印机包括打印功率调节电路，包括用于接收图像数据的调节电路输入，以及调节电路输出，用于以每行的多次通过传输图像数据，每行的通过次数被确定为函数以及连接到电源和打印功率调节电路的液体墨水打印头，用于根据所传送的图像数据喷射液体墨水。可以包括打印功率调节电路的打印机驱动程序确定油墨覆盖量以完成所接收的信息条，并且响应于此确定完成条纹打印所需的通过次数。受控的功率额定值根据每个通道的通过次数提供优化的电源。

8. 发明授权

US6089693A Pagewidth ink jet printer including multiple pass defective nozzle correction 失效
标题翻译： Pagewidth喷墨打印机包括多通孔缺陷喷嘴校正
公开(公告)号：US6089693A
公开(公告)日：2000-07-18
申请号：US4553
申请日：1998-01-08
申请人： Donald J. Drake , Frederick A. Donahue
发明人： Donald J. Drake , Frederick A. Donahue
IPC分类号： B41J2/01 , B41J2/125 , B41J2/13 , B41J2/155 , B41J2/165 , B41J29/393 , B41J29/38
CPC分类号： B41J25/001 , B41J2/155 , B41J2/16579 , B41J29/393
摘要： A liquid ink printer, depositing ink drops to form an image, including a pagewidth printbar, movable to print a complete image when defective nozzles of the printbar are identified. A positioning device, coupled to the pagewidth printbar, positions the printbar at a plurality of discrete locations, to move a functioning nozzle to the location in the image where the defective nozzle should deposit drops of ink. Defective nozzles are identified by the printer control mechanism and a user is given the option to fix the image through a user interface where the printer is directed to fill in the missing information of the image. Defective nozzles can also be identified by printing a test pattern which identifies to a user which of the nozzles are non-functioning. The user then inputs this information to the printer.
摘要翻译：液体墨水打印机，沉积墨滴以形成图像，包括页宽打印条，当识别出打印条的有缺陷的喷嘴时可移动以打印完整的图像。耦合到页宽打印条的定位装置将打印条定位在多个离散位置处，以将功能性喷嘴移动到图像中的有缺陷的喷嘴应该沉积墨滴的位置。由打印机控制机构识别不良喷嘴，并且向用户提供通过用户界面来修复图像的选项，该用户界面指示打印机填充图像的丢失信息。也可以通过打印向用户标识哪个喷嘴不起作用的测试图案来识别不良喷嘴。然后用户将该信息输入到打印机。

9. 发明授权

US5619622A Raster output interface for a printbar 失效
标题翻译：打印条的栅格输出接口
公开(公告)号：US5619622A
公开(公告)日：1997-04-08
申请号：US357839
申请日：1994-12-16
申请人： Anthony E. Audi , Frederick A. Donahue
发明人： Anthony E. Audi , Frederick A. Donahue
IPC分类号： B41J5/30 , B41J2/05 , G06F3/12 , G06K15/10 , G06K15/00
CPC分类号： B41J2/04543 , B41J2/04546 , B41J2/0458 , G06K15/102 , B41J2202/21
摘要： A full width array raster imaging interface for an ink jet printer. The raster imaging interface transforms raster information for printing by a thermal ink jet full width array printbar. The transformation includes dividing scan lines of the raster information into segments corresponding to the number of die in a printbar and to delay the printing of each subsequent segment by one scan line. The transformation is necessary since the printbar prints a single line of pixels in a burst of several banks or segments having a plurality of nozzles. The banks of nozzles are fired sequentially and the nozzles within a bank are fired simultaneously.
摘要翻译：用于喷墨打印机的全宽阵列光栅成像接口。光栅成像接口通过热喷墨全宽阵列印刷条转换光栅信息进行打印。该变换包括将光栅信息的扫描线划分成与打印条中的裸片数相对应的片段，并将每个后续片段的打印延迟一个扫描线。转换是必要的，因为打印机在具有多个喷嘴的多个分组或分段的脉冲串中打印单行像素。喷嘴组依次点火，并且一个组内的喷嘴同时被点燃。

10. 发明授权

US6155669A Pagewidth ink jet printer including a printbar mounted encoding system 失效
标题翻译： Pagewidth喷墨打印机，包括一个打印条安装的编码系统
公开(公告)号：US6155669A
公开(公告)日：2000-12-05
申请号：US4763
申请日：1998-01-08
申请人： Frederick A. Donahue , David G. Anderson
发明人： Frederick A. Donahue , David G. Anderson
IPC分类号： B41J2/01 , B41J2/155 , B41J2/165 , B41J11/00 , B41J11/42 , B65H5/02
CPC分类号： B65H5/021 , B41J11/002 , B41J11/007 , B41J11/0085 , B41J11/42 , B41J2/155 , B41J2/16532 , B41J2/16588 , B65H2404/285 , B65H2801/12
摘要： A liquid ink printer, depositing liquid ink to form an image, on a recording medium, including a printing dimension defining a maximum print area to receive the liquid ink, moving along a recording medium path. The printer includes a printbar, including a plurality of nozzles, aligned substantially perpendicular to the recording medium path, to deposit a swath of ink on the recording medium during movement of the recording medium along the recording medium path, a recording medium transport, disposed adjacent the plurality of nozzles, to move the recording medium along the recording medium path, and an encoder system, spaced from the recording medium transport, to determine the position of the recording medium transport with respect to the array of nozzles. The printbar includes a mounting substrate to mount a plurality of printhead dies including the nozzles and an optical reader of the encoder system. The nozzles and optical reader are aligned and the encoder system accurately determines the position of a belt of the recording medium transport with respect to the nozzles.
摘要翻译：一种液体墨水打印机，用于在记录介质上沉积液体油墨以形成图像，包括限定用于接收液体墨水的最大打印区域的打印尺寸，沿着记录介质路径移动。打印机包括一个印刷条，包括基本上垂直于记录介质路径排列的多个喷嘴，以便在记录介质沿着记录介质路径移动期间，将一条墨水沉积在记录介质上;一个记录介质传输所述多个喷嘴沿着记录介质路径移动记录介质，以及与记录介质传送器间隔开的编码器系统，以确定记录介质相对于喷嘴阵列传送的位置。印刷条包括安装基板以安装包括喷嘴的多个打印头模头和编码器系统的光学读取器。喷嘴和光学读取器对准，并且编码器系统精确地确定记录介质的传送带相对于喷嘴的位置。

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