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    • 1. 发明授权
    • Digital copying machine that automasks data for small originals if a
document feeder is present
    • 数字复印机,如果存在送纸器,则可以自动对小原稿进行数据的数据复制
    • US5987270A
    • 1999-11-16
    • US982185
    • 1997-12-17
    • Gregory T. HulanGary W. GraggA. Justine Worley
    • Gregory T. HulanGary W. GraggA. Justine Worley
    • H04N1/38G03G21/00
    • H04N1/38
    • Images of certain features of the copier itself (indicia, markings, operational components) are searched for, in a defined field of view used for copying. Any such images found, because they are not covered by a document being copied, are suppressed. This avoids the objectionable appearance of machine features from copies on full-size sheets of print medium, and deposition of ink on mechanisms of the copier itself. Preferably things in the field of view are imaged, and the image is parsed for the certain features--readily done by a software or firmware module or ASIC stage, easily incorporated into already-existing software, firmware or circuitry at minor unit cost. Preferably the copier features include document-size indicia, to aid determination by the copier whether a standard-size document is being copied, and thus whether suppression is in order. The search could be for operational machine features rather than special indicia, but those features may not be ideally positioned. Suppression may be of all machine features if the "certain" features are found. Preferably copying of shadows at edges of a document is also suppressed--an easy function to add to the primary operation described. In finding of document edges, it is desirable to ignore all machine features. Preferably photosensors acquire image data from a document, and a print stage prints an image using the data. A feeder, if in operation, positions a document at the sensors. If the feeder is attached to the copier but not in service, data are analyzed automatically to find whether the document is below a particular standard size; and, if so, in response printing of data portions is suppressed automatically.
    • 在用于复印的定义视野中搜索复印机本身的特定特征(标记,标记,操作部件)的图像。 发现任何这样的图像,因为它们不被被复制的文档覆盖,被抑制。 这避免了打印介质的全尺寸纸张上的复印件的机器特征的令人反感的外观,以及墨水在复印机本身的机构上的沉积。 优选地,在视野中的东西被成像,并且针对特定特征解析图像,容易地由软件或固件模块或ASIC级完成,容易地以小的单位成本并入已经存在的软件,固件或电路中。 优选地,复印机特征包括文件尺寸标记,以帮助复印机确定是否正在复制标准尺寸的文档,并且因此是否按顺序进行抑制。 搜索可以是操作机器特征而不是特殊的标记,但是这些特征可能不是理想的位置。 如果找到“某些”功能,抑制可能是所有机器功能。 优选地,在文档边缘复制阴影也被抑制 - 这是添加到所描述的主要操作的容易的功能。 在找到文档边缘时,最好忽略所有的机器特性。 光传感器优选地从文档获取图像数据,并且打印台使用数据打印图像。 进纸器,如果在操作中,将文档放置在传感器处。 如果进纸器连接到复印机但不在使用中,则会自动分析数据以查找文档是否低于特定的标准尺寸; 如果是这样,则响应于自动地抑制数据部分的打印。