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公开(公告)号：US5797061A
公开(公告)日：1998-08-18
申请号：US854875
申请日：1997-05-12
CPC分类号： G03G15/556 , B41J2/17566 , G03G15/0856 , G03G15/5079 , B41J2002/17589 , G03G15/553
摘要： An improved printer is provided that predicts how many pages can be printed before the toner or ink cartridge becomes empty, and also predicts how much time remains before this toner or ink cartridge becomes empty. This prediction is based upon the previous printing history of the printer while using this particular toner cartridge. After measuring the quantity of toner left in the toner cartridge, the printer of the present invention will display the approximate quantity of toner remaining in the cartridge on a screen of a host computer that is connected to the printer, either directly or through a network. The monitor screen of the host computer can also display the predicted number of pages remaining, based on the printer's previous usage history as described above. The toner measuring device provides a "level change" output signal when the remaining toner passes through a predetermined gradation threshold, and depending upon the size of the toner cartridge and upon the time and date at which the level change was detected, the predicted number of pages remaining and the actual amount of toner remaining are more accurately updated upon reaching one of these predetermined gradation thresholds. As each gradation level transition occurs, the printer calculates a new value for the "pages per gradation" variable, and also calculates the number of pages that have been printed since the latest cartridge was installed in the printer, the number of pages printed since the last level or gradation change, and the number of pages or sheets printed between the last two level changes. The printer also can approximate the amount of toner used in printing a particular page of print media to create a Toner Tally for each printed page, which can be used to judge the amount of toner used for one print job and compare that to the amount of toner used for a second print job. The Toner Tally uses a combination hardware/software counter to count the number of "active" pels of each page for a print job.
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公开(公告)号：US5995774A
公开(公告)日：1999-11-30
申请号：US152241
申请日：1998-09-11
申请人： Steven Lewis Applegate , Cyrus Bradford Clarke , Timothy Philip Craig , David Lee Merrifield , James John Molloy , Benjamin Keith Newman , Gary Scott Overall , Gregrory Lawrence Ream , Thomas Gregrory Survant , Thomas Campbell Wade , Phillip Byron Wright
发明人： Steven Lewis Applegate , Cyrus Bradford Clarke , Timothy Philip Craig , David Lee Merrifield , James John Molloy , Benjamin Keith Newman , Gary Scott Overall , Gregrory Lawrence Ream , Thomas Gregrory Survant , Thomas Campbell Wade , Phillip Byron Wright
CPC分类号： G03G21/1889 , G03G2221/1663
摘要： An improved electrophotographic (EP) printer is provided having a detachable process cartridge that contains a non-volatile memory device, which is an EPROM that cannot be erased after a bit is burned. A "toner wheel" mounted to the exterior of the toner reservoir of the process cartridge provides, in conjunction with an optoelectronic sensor, an electrical signal that the printer receives and uses to determine toner usage. A toner "gas-gauge" is created which uses "bucket levels" as discrete steps to indicate how much of the measured physical toner material actually remains within the toner reservoir. After a given amount of toner material has been dispensed through the developer unit, one of the bits of the EPROM memory device is irreversibly burned, thereby providing a permanent record on the process cartridge of a certain amount of toner usage. As with a normal automobile gas gauge, the toner gas-gauge reading should never increase unless the amount of toner material inside the toner reservoir has increased. Once the bucket level transitions begin to occur for the toner gas-gauge, the printer becomes aware that a majority of the toner material has been expended from inside the toner reservoir. If the number of bucket gradation levels then increases by more than the hysteresis amount, then the printer will "lock out" the operation of a non-reusable process cartridge. When the lock-out mode occurs, a particular bit is burned on the EPROM mounted to the cleaner housing of the process cartridge. This ensures that this particular process cartridge cannot be removed, then simply placed back into the same (or a different) printer, and then begin supplying toner to a printer. Certain important "machine data" also can be stored in the EPROM memory device on the process cartridge of the present invention. The present invention is also able to declare the "end-of-life" of a process cartridge when the gas-gauge toner sensor is not functional (such as when it has been tampered with).
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公开(公告)号：US5867203A
公开(公告)日：1999-02-02
申请号：US857228
申请日：1997-05-16
CPC分类号： G06K15/128 , G06K2215/0071
摘要： A method of reducing EMI when printing an image with a printer having a laser includes determining edge pels located near an edge of the image, determining interior pels located within the image and not edge pels, forming edge pels by operating the laser at a first duty cycle and forming at least a portion of a plurality of interior pels by operating the laser at a second duty cycle longer than the first duty cycle. Another aspect is a method of reducing EMI in a printer when forming a latent image on a photoconductive member by gating a light source ON and OFF, including the steps of identifying a first region near an edge of an image to be formed, the first region being formed by gating the light source at a first frequency; and identifying an interior region of the image to be formed, the interior region being formed by gating the light source at a second frequency lower than the first frequency.
摘要翻译： 使用具有激光打印机的图像打印时降低EMI的方法包括确定位于图像边缘附近的边缘像素，确定位于图像内部的内部像素，而不是边缘像素，通过以第一职责操作激光来形成边缘像素 循环并且通过以比第一占空比更长的第二占空比操作激光器来形成多个内部像素的至少一部分。 另一方面是一种通过选择光源ON和OFF来形成感光体上的潜像来减少打印机中的EMI的方法，包括以下步骤：识别要形成的图像的边缘附近的第一区域，第一区域 通过以第一频率门控光源形成; 以及识别要形成的图像的内部区域，所述内部区域通过以低于所述第一频率的第二频率选通所述光源而形成。
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公开(公告)号：US5940190A
公开(公告)日：1999-08-17
申请号：US110190
申请日：1993-08-23
CPC分类号： H04N1/409
摘要： A facsimile printer (1) in which sets of one or two pels contiguous to longer lines of such pels are reduced or eliminated. When reduced the smaller pels are positioned continuous to the longer line and are extended one pel on each side where the longer line exists. This reduces scanner errors and significantly improves images. Gray effects from dithering are not significantly effected when the pels are reduced and spread. When the image is graphic or otherwise more random than text scanned in the line and column direction, the correction may be deactivated.
摘要翻译： 一种传真打印机（1），其中与这种像素的较长行相邻的一个或两个像素的集合被减少或消除。 当减小时，较小的像素与较长的线连续定位，并且在较长的线存在的每侧延伸一个像素。 这可以减少扫描仪错误并显着改善图像。 当皮肤减少和扩散时，来自抖动的灰色效果不会显着影响。 当图像是图形或其他方式比在线和列方向上扫描的文字更随机时，可以停用校正。
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公开(公告)号：US5872897A
公开(公告)日：1999-02-16
申请号：US686874
申请日：1996-07-26
CPC分类号： G06K15/02
摘要： A method of printing an image on a substrate, where a solid border is printed on the substrate, the solid border corresponding to the perimeter of the image. A dead zone, in which no media is applied, is defined adjacent to and interior of the solid border, and a gray pattern is printed adjacent to and interior of the dead zone. A printer according to the present invention is for printing an image on a substrate, and has a data processing means and printer elements. The data processing means has a solid border controller for adjusting the width of a solid border corresponding to the perimeter of the image, and for producing a solid border parameter. Also included in the data processing means is a dead zone controller for adjusting the width of a dead zone adjacent to and interior of the solid border, and for producing a dead zone parameter. The data processing means also includes a gray pattern controller for adjusting the shape and density of a gray pattern printed adjacent to and interior of the dead zone, and for producing a gray pattern parameter. The printer elements are responsive to the data processing means, and receive the solid border parameter, the dead zone parameter, and the gray pattern parameter. The image on the substrate is printed by the printer elements in response to the solid border parameter, the dead zone parameter, and the gray pattern parameter.
摘要翻译： 在基板上印刷图像的方法，其中在基板上印刷实心边框，对应于图像的周边的实心边界。 在其中没有施加介质的死区被限定在实体边界的附近和内部，并且在死区附近和内部打印灰色图案。 根据本发明的打印机是用于在基板上打印图像，并且具有数据处理装置和打印机元件。 数据处理装置具有用于调整对应于图像的周边的实心边界的宽度并用于产生实心边界参数的实体边界控制器。 还包括在数据处理装置中的是一个死区控制器，用于调节邻近实体边界和内部的死区的宽度，并用于产生死区参数。 数据处理装置还包括灰色图案控制器，用于调整邻近死区和内部印刷的灰色图案的形状和密度，并用于产生灰色图案参数。 打印机元件响应于数据处理装置，并且接收实体边界参数，死区参数和灰度模式参数。 响应于实线边界参数，死区参数和灰度图案参数，打印机元件打印基板上的图像。
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公开(公告)号：US5986681A
公开(公告)日：1999-11-16
申请号：US936659
申请日：1997-09-24
申请人： Phillip Byron Wright , Dale Randal Danner , Martin Victor DiGirolamo , Gary Scott Overall , John Parker Richey
发明人： Phillip Byron Wright , Dale Randal Danner , Martin Victor DiGirolamo , Gary Scott Overall , John Parker Richey
IPC分类号： B41J2/44 , G03G15/00 , G03G15/36 , G03G21/00 , G06K15/10 , G06K15/12 , H04N1/409 , B41J2/385
CPC分类号： G06K15/102 , G06K15/128 , G06K2215/0071
摘要： Toner is conserved in printer (1) under operator control by changing the final modulation for each bit in a bit map depending on whether the bit is an edge bit or an internal bit in the character being printed. Since only the final modulation is affected, processing speed and efficiency are not degraded. The operator can select various degrees of internal gray and internal white. Some levels of gray may be satisfactory for some final correspondence.
摘要翻译： 在打印机（1）中，通过根据位是边缘位还是正在打印的字符中的内部位来改变位图中每个位的最终调制，在打印机（1）中保存打印机（1）。 由于只有最终调制受到影响，处理速度和效率不会降低。 操作员可以选择不同程度的内部灰色和内部白色。 一些灰色级别对于一些最终的通信可能是令人满意的。
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公开(公告)号：US5729270A
公开(公告)日：1998-03-17
申请号：US280957
申请日：1994-07-27
申请人： Phillip Byron Wright , Dale Randal Danner , Martin Victor DiGirolamo , Gary Scott Overall , John Parker Richey
发明人： Phillip Byron Wright , Dale Randal Danner , Martin Victor DiGirolamo , Gary Scott Overall , John Parker Richey
IPC分类号： B41J2/44 , G03G15/00 , G03G15/36 , G03G21/00 , G06K15/10 , G06K15/12 , H04N1/409 , B41J2/415 , B41J2/385 , G02B26/08 , H04N1/21
CPC分类号： G06K15/102 , G06K15/128 , G06K2215/0071
摘要： Toner is conserved in printer (1) under operator control by changing the final modulation for each bit in a bit map depending on whether the bit is an edge bit or an internal bit in the character being printed. Since only the final modulation is affected, processing speed and efficiency are not degraded. The operator can select various degrees of internal gray and internal white. Some levels of gray may be satisfactory for some final correspondence.
摘要翻译： 在打印机（1）中，通过根据位是边缘位还是正在打印的字符中的内部位来改变位图中每个位的最终调制，在打印机（1）中保存打印机（1）。 由于只有最终调制受到影响，处理速度和效率不会降低。 操作员可以选择不同程度的内部灰色和内部白色。 一些灰色级别对于一些最终的通信可能是令人满意的。
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8.发明授权
公开(公告)号：US6091891A
公开(公告)日：2000-07-18
申请号：US853687
申请日：1997-05-09
CPC分类号： H04N1/40
摘要： An improved printer is provided which includes a series of analog delay elements that operate at a very fast speed, and therefore, can be used in an enhanced mode to further subdivide the slice clock to create a greater variety of gray levels that can be used in continuous tone printing. By using this enhanced mode of continuous tone printing, a full "on" slice can be immediately preceded or followed by a partial slice, under the control of the series of delay elements. The delay elements are automatically calibrated at the beginning of each page to be printed by placing the delay line chain circuit into a "calibrate mode," during which time a clock pulse is provided to the delay line chain so that the chain is repeatedly tested, in increments of one additional delay element at a time, to determine the number of delay elements that are required to cause a time delay that is greater than or equal to the period of the slice-based clock. Once that quantity is determined, the calibrated delay elements will be used to print the entire next page to be output from the laser printhead. As the printer desires various gray levels for continuous tone printing, the number of whole slices and partial slices for a particular pel or group of pels will be determined by the desired gray level, and when a partial slice is to be printed, the printer will select the appropriate number of delay elements that will be used to control a flip-flop that outputs the "video output" signal to the laser printhead. When the asynchronous "reset" input of the flip-flop has a control signal applied, the output of the flip-flop will immediately change state to truncate the "on time" of the slice that was currently being output to the laser printhead. By use of the asynchronous reset flip-flop, the slice can be subdivided into smaller time intervals, completely under the control of the delay line chain without regard to the frequency or phase angle of the pel clock or the slice-based clock.
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公开(公告)号：US5982408A
公开(公告)日：1999-11-09
申请号：US838581
申请日：1997-04-10
CPC分类号： H04N1/047 , G06K15/1219 , H04N2201/04729 , H04N2201/04791
摘要： A method of achieving line-to-line synchronization having a high degree of synchronization accuracy. Synchronization is performed by a specific high-speed block of logic which signals the beginning of scans to a PELCLK-based logic at pel boundaries, and provides sub-pel shifting as it passes data between the pel generation logic and a laser control signal. The synchronization error is made as small as propagation delays through a single multiplexer element. Such delays can be controlled to values less than 1/2 ns. The need to stop and restart the clocks is eliminated. All complex pel generation logic is clocked with the relatively low frequency PELCLK without regard to the synchronization task.
摘要翻译： 实现具有高同步精度的线间同步的方法。 通过特定的高速逻辑块来执行同步，该高速逻辑块在像素边界处将基于PELCLK的逻辑信号开始扫描，并且当它通过像素生成逻辑和激光控制信号之间的数据时提供子像素移位。 通过单个多路复用器元件使同步误差小到传播延迟。 这样的延迟可以被控制到小于+ E，1/2 + EE ns的值。 消除了停止和重启时钟的需要。 所有复杂的像素生成逻辑以相对较低频率的PELCLK计时，而不考虑同步任务。
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公开(公告)号：US06450611B1
公开(公告)日：2002-09-17
申请号：US09783572
申请日：2001-02-14
申请人： Martin Joseph Brown, Jr. , Cuong Manh Hoang , David Brian Langer , David William Murphy , Gary Scott Overall , Martin Geoffrey Rivers , Ronald Todd Sellers , Bryan Scott Willett
发明人： Martin Joseph Brown, Jr. , Cuong Manh Hoang , David Brian Langer , David William Murphy , Gary Scott Overall , Martin Geoffrey Rivers , Ronald Todd Sellers , Bryan Scott Willett
IPC分类号： B41J2300
CPC分类号： B41J19/14 , G06K15/102 , G06K15/16 , G06K2215/0077
摘要： A method of positioning an ink jet printhead in a printer includes dividing a bitmap into a plurality of rows of tiles. A subset of the rows of tiles to be printed in a next pass of the printhead is identified. Printable ones of the tiles in the subset of rows are identified. The printable tiles contain printable data. Within each printable tile, a top most location of the printable data and at least one of a left most location of the printable data and a right most location of the printable data are identified. A print medium is advanced in a feed direction until a portion of the print medium corresponding with the top most location of the printable data of at least one printable tile is substantially aligned with a top nozzle of the printhead. The printhead is moved, in a scan direction, directly to a position on the print medium corresponding to one of the left most location of the printable data of at least one printable tile and the right most location of the printable data of at least one printable tile.
摘要翻译： 将喷墨打印头定位在打印机中的方法包括将位图划分成多行瓦片。 识别在打印头的下次通过中要打印的瓦片的一行的子集。 识别行子集中的可打印的瓦片。 可打印瓦片包含可打印数据。 在每个可打印的瓦片内，识别可打印数据的最大位置以及可打印数据的最左侧位置和可打印数据的最右边位置中的至少一个。 打印介质沿进给方向前进，直到与至少一个可打印瓦片的可打印数据的最高位置对应的打印介质的一部分基本上与打印头的顶部喷嘴对准。 打印头在扫描方向上直接移动到与至少一个可打印瓦片的可打印数据的最左侧位置之一相对应的打印介质上的位置，以及至少一个可打印瓦片的可打印数据的最右边位置 瓦。
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