公开(公告)号：JP2009202593A

公开(公告)日：2009-09-10

申请号：JP2009037905

申请日：2009-02-20

Applicant: Xerox Corp ,  ゼロックス コーポレイションXerox Corporation

Inventor： MANTELL DAVID A ,  JONES BRENT RODNEY

IPC: B41J29/38 ,  B41J2/175

CPC classification number: B41J2/17593

Abstract: PROBLEM TO BE SOLVED: To reduce a risk that an inappropriate solid ink stick is loaded into a channel of solid ink stick feeding channels in a printer.
SOLUTION: The transport system comprises a single insertion port 204 for receiving a solid ink stick 228, a plurality of feeding channels 208, each of which terminates into a melting device that heats solid ink sticks to a melting temperature, a sensor 222 that generates an electrical signal for identifying the solid ink stick 228 to be received in the single insertion port 204 and an ink stick 228 transport means configured to move solid ink sticks from the single insertion port 204 to one of the feed channels 208 in the plurality of feed channels 208 to enable delivery of the identified solid ink stick 228 through the feed channel to which the identified solid ink stick was moved.
COPYRIGHT: (C)2009,JPO&INPIT

Abstract translation: 要解决的问题：为了减少不正确的固体墨水棒装载到打印机中的固体墨水棒供给通道的通道中的风险。 传输系统包括用于接收固体墨水棒228的单个插入口204，多个进料通道208，每个进料通道终止于将固体墨水加热至熔融温度的熔化装置，传感器222 其产生用于识别将被接收在单个插入口204中的固体墨水棒228的电信号以及配置成将固体墨水棒从单个插入口204移动到多个进给通道208中的一个的墨水棒228的输送装置 的进给通道208，以使所识别的固体墨水棒228能够通过所识别的固体墨水棒移动到的进料通道传送。 版权所有（C）2009，JPO＆INPIT

公开(公告)号：JP2006347171A

公开(公告)日：2006-12-28

申请号：JP2006163278

申请日：2006-06-13

Applicant: XEROX CORP

Inventor： MANTELL DAVID A ,  KROON STEPHEN M

IPC: B41J2/01

Abstract: PROBLEM TO BE SOLVED: To provide a method of modifying a bi-level bitmap to compensate for malfunctioning jets in an inkjet print head. SOLUTION: In the method of modifying one bit per pixel bi-level bitmap, with the bitmap containing a plurality of pixel locations arranged in linear arrays, a malfunctioning jet selects a pixel for printing (111), and a determination is made as to whether the selected pixel is in a half-toned uniform region (113). A first unmarked pixel of a first sequence of potential destination pixel locations is marked if the selected pixel is in a half-toned uniform region (115). The first unmarked pixel of a second sequence of potential destination pixel locations is marked if the selected marked pixel is not in a half-toned uniform region (119). The second sequence of potential destination pixel location is different from the first sequence of potential destination pixel location. COPYRIGHT: (C)2007,JPO&INPIT

公开(公告)号：JP2005182824A

公开(公告)日：2005-07-07

申请号：JP2004367488

申请日：2004-12-20

Applicant: Xerox Corp ,  ゼロックス コーポレイションXerox Corporation

Inventor： MANTELL DAVID A

IPC: G06T5/00 ,  G06K9/00 ,  H04N1/40 ,  H04N1/405 ,  H04N1/52

CPC classification number: G06K15/00 ,  H04N1/40087 ,  H04N1/4053 ,  H04N1/52

Abstract: PROBLEM TO BE SOLVED: To provide a method for processing image data including a plurality of pixels, in a method for processing image data for converting a continuous gradation image to multi-level image data. SOLUTION: This method for processing image data including a plurality of pixels receives an input pixel, identifies an upper-limit level and a lower-limit level for defining gray level spacing on the basis of the input pixel, scales a threshold value of the input pixel as a function of the gray level spacing, creates a reference threshold value as the total of the scaled threshold value and a level threshold value based on the gray level spacing, sets the output level of the input pixel set so as to coincide with either of the upper-limit level and the lower-limit level on the basis of comparison between the input pixel and the reference threshold value, and selectively applies a predetermined function to the threshold value of a pixel in the vicinity of input pixel on the basis of the output level of the input pixel and the gray level. COPYRIGHT: (C)2005,JPO&NCIPI

Abstract translation: 要解决的问题：提供一种用于处理包括多个像素的图像数据的方法，用于处理用于将连续灰度图像转换成多级图像数据的图像数据的方法。 解决方案：用于处理包括多个像素的图像数据的该方法接收输入像素，基于输入像素识别用于定义灰度级间隔的上限级别和下限级别，将阈值 作为灰度级间隔的函数的输入像素的值，创建基于阈值的总和的基准阈值和基于灰度级间隔的电平阈值，将输入像素集的输出电平设置为 基于输入像素和参考阈值之间的比较，与上限级别和下限级别中的任一级一致，并且选择性地将预定函数应用于输入像素附近的像素的阈值 输入像素的输出电平和灰度级的基础。 版权所有（C）2005，JPO＆NCIPI

公开(公告)号：JP2002326349A

公开(公告)日：2002-11-12

申请号：JP2002098331

申请日：2002-04-01

Applicant: XEROX CORP

Inventor： FOLKINS JEFFREY J ,  ELLSON RICHARD N ,  BUHLER STEVEN A ,  MANTELL DAVID A

IPC: B41J2/015 ,  B41J2/145

Abstract: PROBLEM TO BE SOLVED: To make image defects to be generated in printed images unrecognizable by improving the arrangement of an ejector array in a printing head. SOLUTION: An imaging system is provided with the printing head including a plurality of ejectors 38 arranged in one or more sequence groups 55, 57 and 59. Each of the ejectors has a sequence number 40 assigned thereto. The sequence number 40 ranges from a minimum number to a maximum number within each sequence group. The plurality of ejectors have an arrangement such that a difference between the sequence number assignment of any two adjacent ejectors is smaller than a difference between the maximum value and the minimum value of the sequence number.

公开(公告)号：JP2000228729A

公开(公告)日：2000-08-15

申请号：JP36204999

申请日：1999-12-21

Applicant: XEROX CORP

Inventor： MANTELL DAVID A ,  BALASUBRAMANIAN THYAGARAJAN

IPC: B41J5/30 ,  B41J2/525 ,  H04N1/405 ,  H04N1/52 ,  H04N1/60

Abstract: PROBLEM TO BE SOLVED: To obtain a digital printer that is configured to print out an image in at least two different colors. SOLUTION: This digital printer is provided with a 1st half tone screen 20 with a plurality of dots 22 in relation to a 1st color and the 1st half tone screen 20 is placed at a 1st angle. Furthermore, this digital printer is provided with a 2nd half tone screen 40 with a plurality of dots 42 in relation to a 2nd color and the 2nd half tone screen 40 is placed at a 1st angle. This printer is designed so that the dots 22 of the 1st half tone screen are not overlapped with the dots 42 of the 2nd half tone screen in the case that a sum of the two colors is less than 100% of a color reproduction range.

公开(公告)号：JPH11314383A

公开(公告)日：1999-11-16

申请号：JP30561498

申请日：1998-10-27

Applicant: XEROX CORP

Inventor： MANTELL DAVID A

IPC: G06F3/12 ,  B41J2/205 ,  B41J2/21 ,  H04N1/034 ,  H04N1/23 ,  H04N1/40 ,  H04N1/405

Abstract: PROBLEM TO BE SOLVED: To eliminate artificial effect effectively at the time of error diffusion or superposed printing of a plurality of droplets of liquid ink. SOLUTION: The color print system prints out an output image 74 including a plurality of pixel positions in response to an input image signal including a plurality of input pixel each having a first number of input levels of optical density. The print system comprises a print head 26 for printing an image by applying a plurality of ink droplets to a recording medium, and a print driver 56 including error diffusion circuits 81, 82 for receiving an input image and generating a droplet signal as a function of an error signal and a threshold reference signal. The color print head 26 applies a plurality of ink droplets within one of a plurality of pixel positions.

公开(公告)号：JPH10202855A

公开(公告)日：1998-08-04

申请号：JP451798

申请日：1998-01-13

Applicant: XEROX CORP

Inventor： MANTELL DAVID A

IPC: B41J2/01 ,  B41J2/485 ,  G06K15/10

Abstract: PROBLEM TO BE SOLVED: To print a checker board pattern with high addressing capacity by jetting an ink droplet with a plurality of swaths (width of print band) at a plurality of pixel positions having specified resolution thereby visualizing gray scale through overlapped printing of droplets. SOLUTION: In a printing using three droplets, overlapped printing is achieved by printing on nine checks having higher addressing capacity (capacity for designating a finer address) in a plurality of 300spi pixel positions 74 using a print head. Three time overlapped printing is achieved by reducing the volume of droplet by a factor of three and increasing the jetting frequency by a factor of three. Print frequency of a print head nozzle can be increased by increasing the frequency of jet control pulse. Each sub-pixel group 74 has checks of higher addressing capacity.

公开(公告)号：JPH1084478A

公开(公告)日：1998-03-31

申请号：JP18171297

申请日：1997-06-23

Applicant: XEROX CORP

Inventor： MANTELL DAVID A

IPC: H04N1/40 ,  H04N1/405 ,  H04N1/407

Abstract: PROBLEM TO BE SOLVED: To obtain improved error spread method by including a step in which a corrected optical density is generated, a step where an error is decided as a function of a pseudo-output level and a step where an output pixel having one of the decided output levels. SOLUTION: Each input pixel has a possible input level with a first number of optical density, and each output pixel has a possible input level with a second number of optical concentration. If any error exists, the error level is added to an input level of one pixel among input pixels to generate the corrected optical density. Then a pseudo-output level is generated as a function of the corrected optical density level. Furthermore, the error is decided as a function of the selected pseudo-output level. Then the output pixel having any of decided output levels as a function of the corrected optical density. Thus, the pseudo- output level used for an error arithmetic operation used in correcting an input image signal is included.