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1. 发明授权

US5610692A Toner hopper lockout mechanism 失效
标题翻译：墨粉盒锁定机构
公开(公告)号：US5610692A
公开(公告)日：1997-03-11
申请号：US306049
申请日：1994-09-14
申请人： Jeffrey L. Trask , Hiroyuki Honda , Kenji Sato
发明人： Jeffrey L. Trask , Hiroyuki Honda , Kenji Sato
IPC分类号： G03G21/00 , G03G15/01 , G03G15/08 , G03G21/16
CPC分类号： G03G15/0126 , G03G15/0855 , G03G15/0856 , G03G15/086 , G03G15/0865 , G03G15/0879
摘要： A lockout mechanism for preventing an operator from filling a toner hopper in an electrographic printing device until the hopper is at least empty enough to accept the entire contents of a toner cartridge. An interlock mechanism takes advantage of the already existing selector shaft to selectively de-activate lockout members in response to a low toner level transducer. Each hopper is provided with a lockout member which is pivotable between a locked out position and a refill position. The locked out position has the lockout members interfering with a connection between toner cartridges and the top of toner hoppers. The lockout members are held in their locked out positions by cam follower members, which are slidable between an upward locked out position and a downward refill position. The slider member interacts with the cam follower members, via follower pins and notches, to lock the cam follower members in their upwards position or to allow them to move down against the selector cams.
摘要翻译：一种锁定机构，用于防止操作者在电印机中填充调色剂料斗，直到料斗至少足够空以接受调色剂盒的全部内容物。互锁机构利用已经存在的选择器轴来响应于低调色剂水平传感器选择性地去激活锁定构件。每个料斗设有一个锁定构件，可在锁定位置和重新填充位置之间枢转。锁定位置具有锁定构件干扰墨粉盒与调色剂料斗顶部之间的连接。锁定构件通过可在向上锁定位置和向下重新填充位置之间滑动的凸轮从动构件保持在其锁定位置。滑块构件经由从动销和凹口与凸轮从动构件相互作用，以将凸轮从动构件锁定在其上方或允许它们相对于选择器凸轮向下移动。

2. 发明授权

US4999646A Method for enhancing the uniformity and consistency of dot formation produced by color ink jet printing 失效
标题翻译：通过彩色喷墨打印提高点形成均匀性和一致性的方法
公开(公告)号：US4999646A
公开(公告)日：1991-03-12
申请号：US444082
申请日：1989-11-29
申请人： Jeffrey L. Trask
发明人： Jeffrey L. Trask
IPC分类号： B41J2/21 , G06K15/10 , H04N1/191
CPC分类号： H04N1/128 , B41J2/2132 , G06K15/105 , H04N1/1911 , H04N1/1915 , G06K2215/0094 , G06K2215/101 , G06K2215/111
摘要： A multiple pass complementary dot pattern ink jet printing process for enhancing the uniformity and consistency of dot (drop) formation during color ink jet printing. Such enhancement in turn directly affects and improves the total print quality over a color printed area by minimizing the undesirable characteristics of coalescence, beading, hue shift, bending, cockeling and color bleed when printing on both transparencies and plain or special papers. Using this process, successive printed swaths are made by depositing first and second partially overlapping complementary dot patterns on a print media. Simultaneously, the dot spacing in coincident dot rows within the overlapping portions of the dot patterns is alternated between dots in the first pattern and dots in the second pattern. This invention is also directed to the novel process of combining complementary pass ink jet printing as described above with dot-next-to-dot (DND) super pixeling in order to further optimize the ink drop drying conditions desirable for producing the above optimized uniformity and consistency of dot formation over a given color printed area.

3. 发明申请

US20080267655A1 Printing device and method 失效
标题翻译：印刷装置和方法
公开(公告)号：US20080267655A1
公开(公告)日：2008-10-30
申请号：US11796090
申请日：2007-04-26
申请人： Richard L. Swantner , Jeffrey L. Trask
发明人： Richard L. Swantner , Jeffrey L. Trask
IPC分类号： G03G13/00
CPC分类号： G03G15/01 , G03G15/50 , G03G2215/0624
摘要： A method for printing images on at least one substrate using an apparatus having a plurality of print modes, wherein at least one of the print modes is a monochrome printing mode and another of the print modes is a color printing mode, the method comprising: printing a first portion of the images in a first of the print modes; determining whether the images being printed in the first mode meet a predetermined criteria; switching the apparatus into a second of the print modes when the images then being printed in the first print mode meet the predetermined criteria; and printing a second portion of the images using the apparatus in the second of the print modes after the switching.
摘要翻译：一种使用具有多个打印模式的装置在至少一个基板上打印图像的方法，其中所述打印模式中的至少一个是单色打印模式，而所述打印模式中的至少一个是彩色打印模式，所述方法包括：打印在第一打印模式中的图像的第一部分; 确定以第一模式打印的图像是否满足预定标准; 当以第一打印模式打印的图像满足预定标准时，将设备切换成第二打印模式; 以及在切换之后使用第二打印模式中的装置打印图像的第二部分。

4. 发明授权

US5898505A Resolution enhancement procedure and apparatus for a color laser printer 失效
标题翻译：彩色激光打印机的分辨率增强程序和设备
公开(公告)号：US5898505A
公开(公告)日：1999-04-27
申请号：US788767
申请日：1997-01-24
申请人： Qian Lin , Brian Hoffmann , Jeffrey L. Trask
发明人： Qian Lin , Brian Hoffmann , Jeffrey L. Trask
IPC分类号： H04N1/40 , H04N1/405
CPC分类号： H04N1/4053 , H04N1/40087
摘要： A print apparatus performs a halftoning action on a raster pixel image. The print apparatus includes a super-pixel data base for storing plural n.times.n superpixels, each superpixel corresponding to a subset (or "bucket") of gray level pixel values. The method comprises the steps of: logically tiling a dither matrix across the raster pixel image and outputting a threshold value which, logically and positionally corresponds to a given image pixel value. The given image pixel value is then quantized into a selected bucket of pixel values which encompass the given image pixel value. A proportionality value is then determined which identifies the relative position of the given image pixel value within the selected bucket of pixel values. The outputted threshold value is then compared to the determined proportionality value, and the selected bucket number is incremented to a next sequential bucket number if the proportionality value exceeds the threshold value. A superpixel is next selected that is identified by the selected bucket number or the next sequential bucket number, as the case may be. A superpixel includes plural halftone pixel values and the method selects one of those halftone pixel values that is positioned at a location determinable from the coordinates of the given image pixel value. The selected halftone pixel value from the superpixel is then passed to the print engine of the printer for rendering. The method of the invention is carried out, preferably, by an application specific integrated circuit so as to enable high speed halftoning of the raster image.
摘要翻译：打印装置对光栅像素图像执行半色调动作。打印装置包括用于存储多个n×n个超像素的超像素数据库，每个超像素对应于灰度级像素值的子集（或“桶”）。该方法包括以下步骤：在光栅像素图像之间逻辑平铺抖动矩阵并输出逻辑上和位置上对应于给定图像像素值的阈值。然后将给定图像像素值量化为包含给定图像像素值的所选择的像素值桶。然后确定比例值，其识别给定图像像素值在所选择的像素值桶内的相对位置。然后将输出的阈值与确定的比例值进行比较，并且如果比例值超过阈值，则所选择的桶数增加到下一个顺序桶号。下一个被选择的超级像素被选择的桶号或下一个顺序桶号（视具体情况而定）标识。超像素包括多个半色调像素值，并且该方法选择位于可从给定图像像素值的坐标确定的位置处的那些半色调像素值之一。然后将来自超级像素的所选择的半色调像素值传递到打印机的打印引擎以进行渲染。本发明的方法优选地通过专用集成电路进行，以便能够对光栅图像进行高速半色调处理。

5. 发明授权

US06549303B1 Trapping methods and arrangements for use in printing color images 失效
标题翻译：用于打印彩色图像的捕获方法和布置
公开(公告)号：US06549303B1
公开(公告)日：2003-04-15
申请号：US09399589
申请日：1999-09-20
申请人： Jeffrey L. Trask
发明人： Jeffrey L. Trask
IPC分类号： G06F1500
CPC分类号： G06K15/02 , G06K15/1814 , G06K2215/0094
摘要： Methods and arrangements are provided to apply trapping techniques to print image data prior to printing. The trapping techniques employ a trapping process that is designed to detect edges between different color regions that are susceptible to gap/halo formation due to registration errors. The trapping process selectively modifies the print image data associated with the color regions near the edge to provide an overlap of color planes that significantly reduces the potential for gap/halo formation in the subsequently printed image. The trapping process buffers an array of print image data, categorizes the print image data in the array by color, detects if an edge exists in the array based on the categorized colors, and selectively modifies print image data associated with the edge based on neighboring print image data. The modified print image data can then be used to print out the image.
摘要翻译：提供方法和布置以在打印之前应用捕获技术来打印图像数据。捕获技术采用捕集过程，其被设计为检测由于配准误差而易于间隙/晕圈形成的不同颜色区域之间的边缘。捕获过程选择性地修改与边缘附近的颜色区域相关联的打印图像数据，以提供颜色平面的重叠，从而显着降低随后打印的图像中间隙/晕圈形成的可能性。捕获过程缓冲打印图像数据阵列，通过颜色对阵列中的打印图像数据进行分类，基于分类颜色检测阵列中是否存在边缘，并且基于相邻打印选择性地修改与边缘相关联的打印图像数据图像数据。然后可以使用经修改的打印图像数据来打印出图像。

6. 发明授权

US5802435A Toner hopper lockout mechanism 失效
标题翻译：墨粉盒锁定机构
公开(公告)号：US5802435A
公开(公告)日：1998-09-01
申请号：US734933
申请日：1996-10-22
申请人： Jeffrey L. Trask , Hiroyuki Honda , Kenji Sato
发明人： Jeffrey L. Trask , Hiroyuki Honda , Kenji Sato
IPC分类号： G03G21/00 , G03G15/01 , G03G15/08 , G03G21/16
CPC分类号： G03G15/0126 , G03G15/0855 , G03G15/0856 , G03G15/086 , G03G15/0865 , G03G15/0879
摘要： A lockout mechanism for preventing an operator from filling a toner hopper in an electrographic printing device until the hopper is at least empty enough to accept the entire contents of a toner cartridge. An interlock mechanism takes advantage of the already existing selector shaft to selectively de-activate lockout members in response to a low toner level transducer. The printing device includes a plurality of tones hoppers. Each provided with a lockout member which is pivotable between a locked out position and a refill position. The locked out position has the lockout members interfering with a connection between toner cartridges and the top of toner hoppers. The lockout members are held in their locked out positions by cam follower members, which are slidable between an upward locked out position and a downward refill position. The slider member interacts with the cam follower members, via follower pins and notches, to lock the cam follower members in their upwards position or to allow them to move down against the selector cams.
摘要翻译：一种锁定机构，用于防止操作者在电印机中填充调色剂料斗，直到料斗至少足够空以接受调色剂盒的全部内容物。互锁机构利用已经存在的选择器轴来响应于低调色剂水平传感器选择性地去激活锁定构件。打印装置包括多个音调料斗。每个设置有可在锁定位置和重新填充位置之间枢转的锁定构件。锁定位置具有锁定构件干扰墨粉盒与调色剂料斗顶部之间的连接。锁定构件通过可在向上锁定位置和向下重新填充位置之间滑动的凸轮从动构件保持在其锁定位置。滑块构件经由从动销和凹口与凸轮从动构件相互作用，以将凸轮从动构件锁定在其上方或允许它们相对于选择器凸轮向下移动。

7. 发明授权

US5116034A Envelope/sheet feed mechanism 失效
标题翻译：包装/纸张进料机构
公开(公告)号：US5116034A
公开(公告)日：1992-05-26
申请号：US627787
申请日：1990-12-14
申请人： Jeffrey L. Trask , George B. Clifton , Kenneth E. Heath
发明人： Jeffrey L. Trask , George B. Clifton , Kenneth E. Heath
IPC分类号： B41J13/00 , B65H3/44
CPC分类号： B65H3/44 , B65H2405/332
摘要： A mechanism is described for automatically handling envelopes and paper sheets, the mechanism having an input window for receiving the envelopes and paper sheets. The mechanism comprises a first tray for holding a stack of paper sheets and is mountable in the window. A second tray is provided for holding a stack of envelopes and is also mountable in the window. A roller system is positioned to selectively engage the topmost sheet of the stack of sheets in the first tray or a bottommost envelope of the stack of envelopes in the second tray and to feed either the topmost sheet or the bottommost envelope, as the case may be.

8. 发明授权

US6034711A Self-indicating test page for use in setting density level and color balance in a color laser printer 失效
标题翻译：自我指示测试页，用于设置彩色激光打印机中的浓度级别和色彩平衡
公开(公告)号：US6034711A
公开(公告)日：2000-03-07
申请号：US611892
申请日：1996-03-06
申请人： Jeffrey L. Trask , Brian Hoffmann
发明人： Jeffrey L. Trask , Brian Hoffmann
IPC分类号： B41J2/525 , H04N1/00 , H04N1/407 , H04N1/46 , H04N1/60 , G03G15/01
CPC分类号： H04N1/4078 , H04N1/6033
摘要： A test page, system, and method are used to set a color density level of a laser printer, by producing a dot gain test pattern. The laser printer has at least one primary color. The dot gain test pattern is self-indicating and thus requires no external reference in order to determine a correct color density level. A preferred embodiment of the dot gain test pattern includes (a) a stable pattern having a color density which is stable with respect to changes in the laser printer operating conditions, and (b) a sensitive pattern having a color density which is sensitive to changes in the operating conditions, wherein the sensitive pattern in reference to the stable pattern indicates the density level of the laser printer for the at least one primary color. Additionally, in a preferred embodiment, the stable pattern includes a uniform coarse dot pattern, and the sensitive pattern includes a gradient of fine dot densities, the gradient printed adjacent to the coarse dot pattern, wherein a correct density level of the laser printer for the at least one primary color is indicated when a mid-spectrum area of the fine dot gradient appears to blend into the coarse dot pattern.
摘要翻译：使用测试页，系统和方法通过产生点增益测试图案来设置激光打印机的色浓度水平。激光打印机具有至少一种原色。点增益测试图案是自我指示的，因此不需要外部参考，以便确定正确的颜色浓度水平。点增益测试图案的优选实施例包括（a）具有相对于激光打印机操作条件的变化稳定的颜色密度的稳定图案，以及（b）具有对变化敏感的颜色密度的敏感图案在操作条件下，其中参考稳定图案的敏感图案表示激光打印机对于至少一种原色的浓度水平。此外，在优选实施例中，稳定图案包括均匀的粗点图案，并且敏感图案包括细小点密度梯度，邻近粗点图案印刷的梯度，其中激光打印机的正确密度水平为当细点梯度的中频区域出现混合到粗点图案时，指示至少一个原色。

9. 发明授权

US5657430A Software-based procedure for conversion of a scalable font character bitmap to a gray level bitmap 失效
标题翻译：用于将可缩放字体字符位图转换为灰度位图的基于软件的过程
公开(公告)号：US5657430A
公开(公告)日：1997-08-12
申请号：US612037
申请日：1996-03-07
申请人： Marcus A. Smith , Brian E. Hoffmann , Jeffrey L. Trask
发明人： Marcus A. Smith , Brian E. Hoffmann , Jeffrey L. Trask
IPC分类号： B41J2/485 , G06K15/02 , H04N1/40 , C06K15/00
CPC分类号： H04N1/40075 , G06K15/02 , H04N1/40068 , G06K2215/0028 , G06K2215/004
摘要： A binary pixel bitmap image is converted to a multi-bit gray level pixel image at a level of resolution that is reproducible by a laser printer. An edge smoothing procedure is employed by the laser printer and comprises the steps of: deriving from font contours of the image, a binary pixel bitmap of the image at a higher level of resolution than is output by the laser printer; logically stepping an m.times.n pixel window across pixel groups of the higher resolution binary pixel bitmap and, at each step, determining a count of pixels of one binary kind that are present within the pixel window; converting each count of pixels to a corresponding modulation signal; and controlling a laser in the laser printer in accordance with each modulation signal so that an edge smoothed gray level image is produced at the printer's level of output resolution.
摘要翻译：二进制像素位图图像以可由激光打印机再现的分辨率水平转换为多位灰度级像素图像。激光打印机采用边缘平滑处理，包括以下步骤：以比激光打印机输出的分辨率更高的分辨率的图像的二进制像素位图从图像的字体轮廓获得; 在较高分辨率二进制像素位图的像素组之间逻辑地步进m×n像素窗口，并且在每个步骤中，确定存在于像素窗口内的一种二进制类型的像素的数量; 将每个像素数转换成相应的调制信号; 以及根据每个调制信号控制激光打印机中的激光，使得在打印机的输出分辨率级别产生边缘平滑灰度图像。

10. 发明授权

US5252995A Color boundary enhancement in a multi-color electrostatic printer 失效
标题翻译：多色静电打印机中的色彩边界增强
公开(公告)号：US5252995A
公开(公告)日：1993-10-12
申请号：US939814
申请日：1992-09-03
申请人： Jeffrey L. Trask , Gary L. Vondran, Jr.
发明人： Jeffrey L. Trask , Gary L. Vondran, Jr.
IPC分类号： B41J2/525 , B41J2/44 , G03G15/01 , H04N1/58 , G01D15/06
CPC分类号： G03G15/011 , H04N1/58
摘要： A multi-color, electrostatic, laser printing system employs a method for enhancing color representations at boundaries of pixels with different colors. The system employs a charged electrostatic surface that is selectively discharged by application of a modulated laser beam. The system performs the steps of: identifying a pixel of a first color that bounds a pixel of a second color, the first color being a secondary color; decreasing applied laser power to the electrostatic surface at the secondary color pixel site in the process of applying underprint and overprint toners to produce the secondary color; and inhibiting the decrease of applied laser power when applying the overprint toner if the second color pixel is a primary color that is the same as the color of the overprint toner of the secondary color pixel. A similar inhibition action occurs when an isolated primary color pixel or a thin pixel line is found so as to assure proper development.

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