公开(公告)号：US09030516B2

公开(公告)日：2015-05-12

申请号：US13166033

申请日：2011-06-22

申请人： Stacy M. Munechika ,  Chung-Hui Kuo ,  Hwai-Tzuu Tai ,  Stephen J. Famand

发明人： Stacy M. Munechika ,  Chung-Hui Kuo ,  Hwai-Tzuu Tai ,  Stephen J. Famand

IPC分类号： B41J2/385 ,  G03G13/04 ,  G03G15/043 ,  H04N1/401 ,  H04N1/405 ,  H04N1/407 ,  G06K15/02 ,  G06K15/12

CPC分类号： G03G15/043 ,  G06K15/1209 ,  G06K15/1247 ,  G06K15/1868 ,  G06K15/1881 ,  H04N1/4015 ,  H04N1/405 ,  H04N1/407

摘要： Compensation is performed for nonuniformity in a printer. The printer has a photoreceptor and a print head with a plurality of different light sources, each light source capable of producing a plurality of different levels of light. A plurality of stored gain control signals for each light source are related to the light output of that light source. Print job data includes screened pixel levels and a halftone screen specification. The stored gain control signals are adjusted based on the halftone screen specification. The screened pixel levels are modified using the adjusted gain control signals to provide engine pixel levels. Those levels are provided to corresponding light sources to expose the photoreceptor in respective pixel areas with light corresponding to the compensated pixel levels.

摘要翻译： 对打印机的不均匀性进行补偿。 打印机具有感光体和具有多个不同光源的打印头，每个光源能够产生多个不同级别的光。 用于每个光源的多个存储的增益控制信号与该光源的光输出有关。 打印作业数据包括屏蔽像素级别和半色调屏幕规格。 存储的增益控制信号根据半色调屏幕规格进行调整。 使用调整后的增益控制信号修改屏蔽像素级，以提供引擎像素级。 这些电平被提供给相应的光源，以使与相应于补偿的像素电平相对应的光曝光在各个像素区域中的感光体。

公开(公告)号：US20120268544A1

公开(公告)日：2012-10-25

申请号：US13166033

申请日：2011-06-22

申请人： STACY M. MUNECHIKA ,  CHUNG-HUI KUO ,  HWAI-TZUU TAI ,  STEPHEN J. FAMAND

发明人： STACY M. MUNECHIKA ,  CHUNG-HUI KUO ,  HWAI-TZUU TAI ,  STEPHEN J. FAMAND

IPC分类号： B41J2/385

CPC分类号： G03G15/043 ,  G06K15/1209 ,  G06K15/1247 ,  G06K15/1868 ,  G06K15/1881 ,  H04N1/4015 ,  H04N1/405 ,  H04N1/407

摘要： Compensation is performed for nonuniformity in a printer. The printer has a photoreceptor and a print head with a plurality of different light sources, each light source capable of producing a plurality of different levels of light. A plurality of stored gain control signals for each light source are related to the light output of that light source. Print job data includes screened pixel levels and a halftone screen specification. The stored gain control signals are adjusted based on the halftone screen specification. The screened pixel levels are modified using the adjusted gain control signals to provide engine pixel levels. Those levels are provided to corresponding light sources to expose the photoreceptor in respective pixel areas with light corresponding to the compensated pixel levels.

摘要翻译： 对打印机的不均匀性进行补偿。 打印机具有感光体和具有多个不同光源的打印头，每个光源能产生多个不同级别的光。 用于每个光源的多个存储的增益控制信号与该光源的光输出有关。 打印作业数据包括屏蔽像素级别和半色调屏幕规格。 存储的增益控制信号根据半色调屏幕规格进行调整。 使用调整后的增益控制信号修改屏蔽像素级，以提供引擎像素级。 这些电平被提供给相应的光源，以使与相应于补偿的像素电平相对应的光曝光在各个像素区域中的感光体。