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1. 发明授权

US06412938B1 System and method for reducing inter-color bleeding in liquid ink jet printing 失效
标题翻译：用于减少液体喷墨印刷中颜色间渗色的系统和方法
公开(公告)号：US06412938B1
公开(公告)日：2002-07-02
申请号：US09594689
申请日：2000-06-16
申请人： Roger Guy Markham , Yonglin Xie , William G. Hawkins
发明人： Roger Guy Markham , Yonglin Xie , William G. Hawkins
IPC分类号： G01D1100
CPC分类号： C09D11/30 , C09D11/40
摘要： Printing systems and methods that reduce inter-color bleeding between dark and light colored inks without losing productivity of a color ink jet printer by distributing the printing of a total amount of black ink required in a single swath over multiple passes while each of the color inks required for the same swath is printed in a single pass. For example, the print method may print a single swath by printing portions of the slow dry black ink in three passes while printing each of the fast dry color inks in single passes.
摘要翻译：打印系统和方法可以减少深色和浅色油墨之间的颜色间渗色，而不会因为彩色墨水中的每一个墨水分散印刷单次扫描所需的总量的黑色墨水而损失彩色喷墨打印机的生产率。相同条纹所需的印刷单次通过。例如，打印方法可以通过在三次通过中打印部分慢干燥黑色墨水来打印单个条带，同时以单次打印每个快干的干性油墨。

2. 发明授权

US06293644B1 Method and apparatus for preventing satellite induced banding in an ink jet printer using pre-pulse compensation 有权
标题翻译：用于使用预脉冲补偿来防止喷墨打印机中的卫星诱导条纹的方法和装置
公开(公告)号：US06293644B1
公开(公告)日：2001-09-25
申请号：US09593805
申请日：2000-06-15
申请人： Roger Guy Markham , Yonglin Xie
发明人： Roger Guy Markham , Yonglin Xie
IPC分类号： B41J29393
CPC分类号： B41J2/04516 , B41J2/04528 , B41J2/04563 , B41J2/0458 , B41J2/04591 , B41J2/04598
摘要： The present system counteracts the distorting effect of a bi-directional print head by reducing the visual effect of a satellite drop displacement when the print head is traveling in a direction that increases the satellite displacement from a main drop. The system can also counteract the distorting effect of the bi-directional print head by increasing the visual effect of a satellite drop misplacement when the print head is traveling in a direction that decreases the satellite misplacement from the main drop. The satellite drop displacement can be adjusted by correcting a measured ink temperature, and thereby, an amount of pre-pulsing prior to ejection of the ink.
摘要翻译：本发明的系统通过减少当打印头沿着从主液滴增加卫星位移的方向行进时卫星下落位移的视觉效果来抵消双向打印头的失真效应。该系统还可以通过增加当打印头沿着降低卫星偏移距离主滴的方向行进时的卫星下落错位的视觉效果来抵消双向打印头的扭曲效果。可以通过校正测量的油墨温度，从而调节喷墨前的预脉冲量来调节卫星下落位移。

3. 发明授权

US06607321B2 Method and apparatus for moving a medium through a medium indexing device 有权
公开(公告)号：US06607321B2
公开(公告)日：2003-08-19
申请号：US09725280
申请日：2000-11-29
申请人： Roger Guy Markham
发明人： Roger Guy Markham
IPC分类号： H02P700
CPC分类号： B41J11/42 , B41J29/38
摘要： A method and an apparatus for a medium indexing device, such as an ink jet printer, that includes utilizing greater torque generated by a motor at lower speed and lower torque available by the motor at higher speeds. Motion profiling during acceleration and deceleration is designed to better utilize available torque provided by the motor in order to quickly position the medium during start-stop operations and to reduce the maximum power or speed required of the motor during the indexing operations. The motor may include a stepper or servo motor, and may apply to medium indexing devices other than printers. In addition, a velocity discontinuity in motor speed is provided near the stop position to prevent the medium from overshooting the intended stop position.

4. 发明授权

US06897968B1 Apparatus and method for counting pixels in print data 有权
标题翻译：用于计算打印数据中像素的装置和方法
公开(公告)号：US06897968B1
公开(公告)日：2005-05-24
申请号：US09433586
申请日：1999-11-04
申请人： Roger Guy Markham
发明人： Roger Guy Markham
IPC分类号： G06F13/00 , G06K15/02
CPC分类号： G06K15/02 , G06K15/1822
摘要： An independent hardware pixel counter counts bits of print data in regions of interest. The independent pixel counter can be an application specific integrated circuit (ASIC), and is separate from a control processor. The independent hardware pixel counter selectively monitors a data bus carrying image data to or from a memory. Once the pixels of the image data have been counted, the count data can be sent to the control processor in order to implement a print strategy. The pixel counter counts the print data at a point when image data is being sent to the memory, since at that point the image data is both uncompressed and in a raster format, and thus can be easily analyzed. Additionally, because the image data is stored in the memory until enough print data has accumulated for printing, the processor is provided with sufficient time to gather and use print information before the counted image data is printed.
摘要翻译：独立的硬件像素计数器对感兴趣的区域中的打印数据的位进行计数。独立像素计数器可以是专用集成电路（ASIC），并且与控制处理器分离。独立硬件像素计数器选择性地监视向存储器或从存储器传送图像数据的数据总线。一旦对图像数据的像素进行了计数，就可以将计数数据发送到控制处理器以实现打印策略。像素计数器在将图像数据发送到存储器的时刻对打印数据进行计数，因为在该时刻，图像数据都是未压缩的并且是光栅格式，因此可以容易地分析。此外，由于图像数据被存储在存储器中，直到足够的打印数据被累积用于打印为止，处理器被提供足够的时间以在打印计数的图像数据之前收集和使用打印信息。

5. 发明授权

US06168333A Paper driven rotary encoder that compensates for nip-to-nip handoff error 有权
标题翻译：纸驱动旋转编码器，用于补偿压区到压区切换错误
公开(公告)号：US06168333A
公开(公告)日：2001-01-02
申请号：US09327612
申请日：1999-06-08
申请人： Eric Alan Merz , Roger Glenn Teumer , Frederick Allen Donahue , W. Keith Gilliland , Roger Guy Markham
发明人： Eric Alan Merz , Roger Glenn Teumer , Frederick Allen Donahue , W. Keith Gilliland , Roger Guy Markham
IPC分类号： B41J1302
CPC分类号： B65H7/06 , B41J11/42 , B65H2301/44318 , B65H2404/6942 , B65H2511/20 , B65H2511/212 , B65H2511/232 , B65H2513/11 , B65H2553/51 , B65H2220/02 , B65H2220/03 , B65H2220/01
摘要： A sheet transport system has an encoder roller in direct contact with the sheet media and driven by the sheet media to detect and compensate for any registration error particularly at lead and trail edges during transport of the sheet media as media enters and exits transport nips. The invention is well suited for use in controlling and monitoring paper movement in incremental advance and print systems, such as ink jet printers. A biasing member ensures that the sheet media and encoder roller are in intimate contact. Preferably, a material with a high coefficient of friction is provided on an outer periphery of the encoder roller to assist in mating of the roller with the sheet media.
摘要翻译：纸张传送系统具有与片材介质直接接触并由片材介质驱动的编码器辊，以在介质进入和离开传送夹具期间在片材介质的传送期间特别是在引线和轨迹边缘处检测和补偿任何注册误差。本发明非常适合用于控制和监视增量式推进纸张运动和打印系统，如喷墨打印机。偏置构件确保片材介质和编码器辊紧密接触。优选地，具有高摩擦系数的材料设置在编码辊的外周上，以帮助辊与片介质的配合。

6. 发明授权

US06808243B1 Thermal inkjet print head with blended enable trains 失效
标题翻译：热喷墨打印头与混合启用列车
公开(公告)号：US06808243B1
公开(公告)日：2004-10-26
申请号：US10442222
申请日：2003-05-20
申请人： Roger Guy Markham , Ray Wartinger
发明人： Roger Guy Markham , Ray Wartinger
IPC分类号： B41J205
CPC分类号： B41J2/04563 , B41J2/0458 , B41J2/04593 , B41J2/04598
摘要： A series of enable trains are designed to provide a predetermined increment of heat to the heating element of a thermal ink jet printer printhead. The enable trains are stored in tabular form in memory according to printhead temperature. The printhead temperature is sensed during the printing cycle and read by the printhead controller. The controller selects a enable train from the table and applies it to the heating element. When subsequent cycles call for a change in the enable train, the current enable train is blended with the new enable train to provide an average increment of heat.
摘要翻译：一系列启用列车被设计成向热喷墨打印机打印头的加热元件提供预定增量的热量。启用列可根据打印头温度以表格形式存储在存储器中。在打印周期期间感测打印头温度并由打印头控制器读取。控制器从工作台中选择启用列，并将其应用于加热元件。当随后的周期要求启用列车的改变时，将当前启用列车与新的启用列车混合以提供平均热量增加。

7. 发明授权

US06215119B1 Dual sensor encoder to counter eccentricity errors 失效
标题翻译：双传感器编码器可以防止偏心误差
公开(公告)号：US06215119B1
公开(公告)日：2001-04-10
申请号：US09232818
申请日：1999-01-19
申请人： Roger Guy Markham , Anthony Edward Audi , Kristin Anne Hughes
发明人： Roger Guy Markham , Anthony Edward Audi , Kristin Anne Hughes
IPC分类号： G01D5347
CPC分类号： G01D5/244
摘要： A low-cost, high precision encoder system includes a codewheel and two encoder sensors mounted at opposite sides of the codewheel to form a dual sensor system having a corrected output that corrects for eccentricity in the mounting of the codewheel and the sensors. The encoder system has a correction circuit that provides a corrected output based on inputs received from the two encoder sensors, which can be single or multiple channel encoders. Methods for achieving the corrected output signal include measuring a time between a signal from the first encoder and a signal from the second encoder and halving this time. Methods for identifying a leading signal from the two sensors are also provided.
摘要翻译：低成本，高精度的编码器系统包括安装在码盘的相对侧的码盘和两个编码器传感器，以形成具有校正输出的双传感器系统，其校正了安装码盘和传感器时的偏心度。编码器系统具有校正电路，其基于从两个编码器传感器接收的输入提供校正的输出，该编码器传感器可以是单通道或多通道编码器。用于实现校正的输出信号的方法包括测量来自第一编码器的信号和来自第二编码器的信号之间的时间，并将此时间减半。还提供了用于识别来自两个传感器的前导信号的方法。

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