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公开(公告)号：US4914477A
公开(公告)日：1990-04-03
申请号：US270981
申请日：1988-11-14
CPC分类号： G03G15/50 , G03G15/0163 , G03G21/145 , G03G2215/0158 , G03G2215/017
摘要： A reproduction apparatus has an endless web with perforations or other indicia triggering image formation and receiving sheet presentation. To correct for error in perforation location the distance between perforations is measured and a delay after sensing one or both perforations is adjusted accordingly. Preferably, the distance between perforations is measured by an encoder temporarily connected to the apparatus when a new web is installed by a serviceperson.
摘要翻译： 再现装置具有带有穿孔或其他标记的环形网，触发图像形成和接收纸张呈现。 为了纠正穿孔位置的错误，测量穿孔之间的距离，并相应地调整感测一个或两个穿孔之后的延迟。 优选地，当由服务人员安装新的网络时，穿孔之间的距离由临时连接到设备的编码器测量。
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公开(公告)号：US4972208A
公开(公告)日：1990-11-20
申请号：US399186
申请日：1989-08-28
CPC分类号： H04N1/0473 , H04N1/1135 , H04N1/12 , H04N2201/0471 , H04N2201/04755 , H04N2201/04756 , H04N2201/04786 , H04N2201/04787
摘要： Image frame length control apparatus and methods are disclosed which have particular utility in a printing or reproduction apparatus that writes one or more images on a transported photosensitive media such as a photoconducting drum or continuous-loop web. When an electronic writing system or optical exposure system is used to expose a driven media on a line-by-line basis, a variation in media thickness causes the latent image frame to be written with an inaccurate frame length. Consequently, a degraded print is produced.The latent image frame length is corrected during exposure, by adding or omitting one or more lines in the image frame. Alternatively, the exposure of an image is offet by an interval corresponding to one-half of the total length discrepancy between the uncorrected image frame length and the image frame length that would be written if the media surface speed was at a median level. The overall image length error is thereby reduced by half and distributed to the upper and lower extremities of the image frame. In another embodiment, the rotation rate of the media is increased or decreased when a respectively thin or thick portion of the media passes over the driving apparatus.The corrected image fames are written with greater fidelity to the original and, after development and transfer to a receiver, are particularly well-suited for use in forming an accurate multicolor reproduction.
摘要翻译： 公开了图像帧长度控制装置和方法，其在打印或再现装置中具有特别的用途，该设备将一个或多个图像写入传送的光敏介质如光导滚筒或连续卷筒纸上。 当使用电子书写系统或光学曝光系统来逐行曝光从动介质时，介质厚度的变化使得潜像帧以不准确的帧长度被写入。 因此，产生劣化的打印。 在曝光期间，通过在图像帧中添加或省略一条或多条线来校正潜像帧长度。 或者，图像的曝光以对应于未校正的图像帧长度和如果介质表面速度处于中间水平时将被写入的图像帧长度之间的总长度差异的一半的间隔开始。 因此，整体图像长度误差减少了一半，并且分布到图像帧的上肢和下肢。 在另一个实施例中，当介质的分别薄或厚的部分通过驱动装置时，介质的旋转速率增加或减小。 校正后的图像信号以较高的保真度写入原稿，并且在显影和转印到接收器之后特别适用于形成准确的多色再现。
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3.发明授权
公开(公告)号：US5040026A
公开(公告)日：1991-08-13
申请号：US488546
申请日：1990-03-05
CPC分类号： G03G15/167 , G03G15/0131 , G03G2215/0193 , G03G2215/0196
摘要： Multicolor toner images are formed on a receiving surface by superimposing single color toner images formed electrostatically on an image member, in registration on a receiving surface. The receiving surface is rotated by a transfer member, for example, a transfer drum, repeatedly through transfer relation with the image member. To improve transfer and avoid wear of the image member, the transfer member is driven by the image member during transfer. To improve registration the transfer member is separated from the image member between transfers and reindexed. A stepper motor is used for such reindexing. The invention is particularly usable in transfers using heat, especially to a heat softenable outer surface of a receiving sheet.
摘要翻译： 通过将形成在静电上的单色调色剂图像叠加在接收表面上，在接收表面上形成多色调色剂图像。 接收表面通过转印构件例如转印鼓，通过与图像构件的转移关系重复地旋转。 为了改善转印并避免图像部件的磨损，转印部件在转印期间被图像部件驱动。 为了改善注册，传输成员在传输和重新索引之间与映像成员分离。 步进电机用于这种重建。 本发明特别可用于使用热量的转印，特别是用于接收片材的可热软化的外表面。
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4.发明授权Color transparency having toner images transferred to both sides and method of making 失效具有转印到两侧的调色剂图像的颜色透明度和制造方法
公开(公告)号：US5303003A
公开(公告)日：1994-04-12
申请号：US832129
申请日：1992-02-06
CPC分类号： G03G13/01 , G03G15/01 , G03G15/6591 , G03G2215/00497
摘要： A color tranparency having high density includes overlying color toner images on opposite sides of a transparent substrate. The color images are formed by first forming two sets of electrostatic images, one set being a mirror image of the other. The electrostatic images are toned by application of different color toners to the images of each set and then each set is transferred in registration to opposite sides of the transparency.
摘要翻译： 具有高密度的彩色透明度包括在透明衬底的相对侧上的重叠的彩色调色剂图像。 彩色图像通过首先形成两组静电图像形成，一组是另一组的镜像。 通过将不同颜色的调色剂应用于每组的图像来调节静电图像，然后将每个组都对准地转印到透明体的相对侧。
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公开(公告)号：US4806980A
公开(公告)日：1989-02-21
申请号：US927639
申请日：1986-11-06
IPC分类号： G03G15/00 , G03G15/01 , G03G15/04 , G03G15/043 , G03G15/06
CPC分类号： G03G15/065 , G03G15/5037 , G03G2215/00054
摘要： The specification discloses apparatus by which multiple reproductions can be produced from an original, all reproductions from the same original being of substantially identical quality. An electrographic machine substantially uniformly charges an electrographic recording member to a predetermined initial voltage and imagewise exposes the charged recording member at a nominal exposure level to produce a latent charge image. The initial voltage level and the exposure level are process control parameters of the machine, which also includes a biased electrode for controlling deposition of toner to the latent charge image. Signals are produced and stored having values characteristic of (1) the level of at least one of the parameters and (2) the bias voltage level which are associated with a desired reproduction quality of an original. A comparison signal is produced by taking the signal values of the sensed parameters associated with latent charge images of successive reproductions of an original and comparing them with the stored signal values for the corresponding latent charge images of the same original. The bias voltage level associated with the latent charge image is varied in response to the comparison signal, thereby producing a developed image having substantially the same upright quality as that produced by the stored signal values.
摘要翻译： 本说明书公开了可以从原件生产多个复制品的装置，所有来自相同原件的复制品具有基本相同的质量。 电摄影机基本上均匀地将电摄影记录元件充电到预定的初始电压，并以标称曝光水平对充电的记录元件成像曝光以产生潜伏图像。 初始电压电平和曝光水平是机器的过程控制参数，其还包括用于控制调色剂沉积到潜电荷图像的偏置电极。 产生并存储具有以下特征值的特征的信号：（1）参数中的至少一个的电平和（2）与原始的期望再现质量相关联的偏置电压电平。 通过获取与原始连续再现的潜伏电荷图像相关联的感测参数的信号值并将其与存储的相同原稿的相应潜电荷图像的信号值进行比较来产生比较信号。 与潜电荷图像相关联的偏置电压水平响应于比较信号而变化，从而产生具有与所存储的信号值产生的垂直质量基本相同的直立质量的显影图像。
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公开(公告)号：US5151717A
公开(公告)日：1992-09-29
申请号：US651844
申请日：1991-02-04
CPC分类号： G03G15/01 , G06K15/128 , G06K15/129
摘要： A variety of sizes of prints are made electrophotographically utilizing a single large size receiving sheet, for example, a receiving sheet that is 12.times.18 inches. The receiving sheet is large enough to receive one image of the largest size or an array of smaller sized images. The receiving sheet with smaller images is cut to size after transfer. The method is particularly useful in forming multicolor images on a receiving sheet wrapped around a transfer drum.
摘要翻译： 使用单个大尺寸接收片，例如12×18英寸的接收片，电子照相制造各种尺寸的印刷品。 接收纸张足够大以接收最大尺寸的图像或较小尺寸图像的阵列。 转印后切片尺寸较小的接收纸张。 该方法特别可用于在卷绕在转印鼓上的接收片材上形成多色图像。
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公开(公告)号：US5140348A
公开(公告)日：1992-08-18
申请号：US589950
申请日：1990-09-28
CPC分类号： G03G15/01 , Y10S347/90
摘要： An electrostatographic color image production apparatus forms a series of large color separation electrostatic latent images of a multicolor image on an image member. Each large latent image is made up of an array of smaller latent images with border regions therebetween. Latent images are formed in the border regions to create a border color in one of the dominant colors of the multicolor image.
摘要翻译： 静电彩色图像制作装置在图像构件上形成多色图像的一系列大的分色静电潜像。 每个大潜像由其间具有边界区域的较小潜像阵列组成。 在边界区域中形成潜在图像以在多色图像的主要颜色之一中创建边框颜色。
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公开(公告)号：US5047791A
公开(公告)日：1991-09-10
申请号：US532832
申请日：1990-06-04
IPC分类号： G03G15/01
CPC分类号： G03G15/0131 , G03G15/0163 , G03G2215/0154 , G03G2215/0177 , G03G2215/0193
摘要： A color printing apparatus forms a series of electrostatic images on an image drum, tones them with different color toners and transfers the toner images to a receiving sheet to form multicolor images. The beginning and end of transfer of each image create mechanical discontinuities in the motion of the drum because of engagement and disengagement of the receiving sheet or its edges in a pressure transfer nip. The image-forming process is designed so that significant image scanning does not occur during the discontinuities.
摘要翻译： 彩色打印设备在图像鼓上形成一系列静电图像，用不同的颜色调色剂进行调色，并将调色剂图像转印到接收纸上，形成多色图像。 每个图像的转移的开始和结束由于在压力传送压区中接收片或其边缘的接合和分离而在鼓的运动中产生机械不连续性。 图像形成处理被设计成使得在不连续性期间不发生显着的图像扫描。
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公开(公告)号：US4893135A
公开(公告)日：1990-01-09
申请号：US248075
申请日：1988-09-23
CPC分类号： G06K15/1219
摘要： Endless web laser printer having enhanced copy registration. Compensation is made for the position of the laser beam along the scan line when the image scanning is to begin. The extra delay in starting the image scan is translated to an equal and extra delay for feeding the paper to the image transfer station. Up to one full line of misregistration can be corrected. Dividing the scan line into segments decreases the possible number of extra delay time quantities consistent with the perceivable improvement in registration tolerance.
摘要翻译： 无限网络激光打印机具有增强的复印注册。 当图像扫描开始时，补偿激光束沿着扫描线的位置。 启动图像扫描的额外延迟被转换为将纸张馈送到图像传送站的相等和额外的延迟。 最多可能会纠正一连串错配。 将扫描线分割成段可以减少与可注意的对准容差改善一致的额外延迟时间量的可能数量。
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公开(公告)号：US5175628A
公开(公告)日：1992-12-29
申请号：US767712
申请日：1991-09-30
CPC分类号： H04N1/648
摘要： A method and apparatus for managing the storage of image data in a framestore of an electronic color printing system so as to minimize the storage requirements of the framestore. In such a system, image data is read out from the framestore in a color-separated sequence (R1-Rn; G1-Gn; B1-Bn) which differs substantially from a color-integrated sequence (R1,G1,B1-Rn,Gn,Bn) in which image data is received by the framestore from an input image scanner. According to the invention, values representing such color-integrated data from the image scanner are stored at address locations in the framestore vacated by the immediately preceding data read-out step. Such data management obviates the need for two separate framestores, each being capable of storing a sufficient number of multiple color-separated images to produce a desired array of multicolor images on a single receiver sheet.
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