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31. 发明授权

US4175265A Toner transfer system 失效
标题翻译：墨粉转印系统
公开(公告)号：US4175265A
公开(公告)日：1979-11-20
申请号：US736310
申请日：1976-10-28
申请人： Alfred M. Nelson , David L. Davis
发明人： Alfred M. Nelson , David L. Davis
IPC分类号： G03G15/16 , G03G19/00
CPC分类号： G03G19/00 , G03G15/163
摘要： Apparatus for printing images on paper or other print medium by transferring toner on a magnetic tape onto the paper, using a voltage pulse applied between electrodes located respectively behind the tape and behind the paper. The electrode behind the tape is narrower than the tape, so that the opposite edge portions of the tape serve as insulators that prevent the formation of electric arcs between the electrodes. The voltage is applied in the form of a high voltage pulse on the order of 1500 volts lasting on the order of one millisecond, to transfer toner, and is followed by a sustained voltage on the order of 150 volts for preventing the toner particles from shifting position on the paper.
摘要翻译：用于通过将磁带上的调色剂转印到纸张上的纸或其他打印介质上的图像，使用施加在分别位于带后面的电极和纸后面的电压脉冲来进行图像打印。带后面的电极比带窄，使得带的相对边缘部分用作防止电极之间形成电弧的绝缘体。以1500毫秒量级的高电压脉冲的形式施加电压，持续大约1毫秒，以转印调色剂，并且之后是约150伏特的持续电压，以防止调色剂颗粒移动在纸上的位置。

32. 发明授权

US4110758A High quality printing system with constant intermittent tape drive 失效
标题翻译：高品质的打印系统，具有不间断的磁带驱动器
公开(公告)号：US4110758A
公开(公告)日：1978-08-29
申请号：US753440
申请日：1976-12-22
申请人： Alfred N. Nelson , David L. Davis
发明人： Alfred N. Nelson , David L. Davis
IPC分类号： B65H20/24 , G03G19/00 , B65H17/42
CPC分类号： B65H20/24 , G03G19/00 , B65H2301/4491 , B65H2406/30 , B65H2408/215
摘要： A printing system of the type wherein magnetic images are recorded on a tape, the images are toned, the tape is positioned to extend adjacent to a web of paper, and the toner is then transferred from the tape to the paper. In the present system, the tape portion which passes by the image recording head and toner is moved continuously, while the tape portion which passes adjacent to the paper is moved intermittently by frictional engagement with a transport belt, a pair of vacuum column buffers being provided between the continuously and intermittently driven tape portions and supplying tape tension that holds the tape to the transport belt. At the transfer station where the tape extends adjacent to the paper, transfer is effected by stopping the tape, and then utilizing a pair of actuators on either side of the paper to move corresponding tape locations to the plane of the paper, so that all portions of the tape contact or are very close to the paper, and by then applying a high voltage pulse to transfer the toner from the tape to the paper.
摘要翻译：这种类型的打印系统，其中磁性图像被记录在磁带上，图像被调色，磁带定位成相邻于纸幅延伸，然后调色剂从带传送到纸张。在本系统中，通过图像记录头和调色剂的带部分被连续地移动，而邻近纸张通过的带部分通过与传输带的摩擦接合间歇地移动，提供一对真空柱缓冲器在连续和间歇驱动的带部分之间并且将带将张紧带保持在传送带上。在带延伸靠近纸张的转运站处，通过停止带子进行转印，然后利用纸张的任一侧的一对致动器将相应的带位置移动到纸的平面，使得所有部分或者非常接近纸张，然后施加高压脉冲以将调色剂从带传送到纸张。

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