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    • 4. 发明授权
    • Printing machine
    • 印刷机
    • US5021810A
    • 1991-06-04
    • US542987
    • 1990-06-25
    • Katsumi MuroiKenji OkunaHidefumi OtsukaKastubumi OuchiTsutomu IimuraRyoji Kojima
    • Katsumi MuroiKenji OkunaHidefumi OtsukaKastubumi OuchiTsutomu IimuraRyoji Kojima
    • B41J2/385B41J2/43G03G15/05G03G15/34
    • G03G15/348B41J2/43G03G2217/0033
    • A printing machine according to the present invention, comprises electrically conductive and magnetically inductive printing toner, an array of electrode-needles contacting with toner, each of the electrode-needles arranged apart from the adjacent electrode-needles in the array and individually energized in accordance with a desired printing pattern to electrify the toner communicating electrically with the energized electrode-needle, recording means including an electrically conductive portion and an insulating surface which extends on the electrically conductive portion and is arranged away from the array of electrode-needles to face thereto and to contact with the toner arranged between the electrode-needles and the insulating surface, the voltage applied to the electrically conductive portion being positive when the voltage applied to the energized electrode-needles is negative or the voltage applied to the electrically conductive portion being negative when the voltage applied to the energized electrode-needles is positive so that the toner electrified by the energized electrode-needle is attracted and attached to the insulating surface by the electrically conductive portion, the insulating surface moving in relation to the array of electrode-needles so that the toner is attached to an area of the insulating surface, magnetic means for attracting the magnetically inductive printing toner to form toner chains between the array of the electrode-needles and the insulating surface, and transferring means for transferring the toner from the insulating surface to a work piece, wherein longitudinally extending surfaces of the electrode-needles face to the insulating surface to electrify the printing toner arranged between the electrode-needles and the insulating surface.
    • 根据本发明的印刷机包括导电和磁感应印刷调色剂,与调色剂接触的电极针阵列,每个电极针布置在阵列中与相邻的电极针分开并且按照 具有期望的印刷图案,以使与通电的电极针电气连通的调色剂通电,记录装置包括导电部分和在导电部分上延伸的绝缘表面,并且远离电极针阵列布置以面对它 并且与布置在电极针和绝缘表面之间的调色剂接触,当施加到通电的电极针的电压为负时,施加到导电部分的电压为正,或者施加到导电部分的电压为负 当施加电压时 通电的电极针是正的,使得由通电的电极针带电的调色剂被导电部分吸引并附着到绝缘表面,绝缘表面相对于电极针阵列移动,使得调色剂 附着在绝缘表面的区域上的磁性装置,用于吸引磁感应打印调色剂以在电极针阵列和绝缘表面之间形成调色剂链的磁性装置,以及用于将调色剂从绝缘表面转移到工件的转印装置 其中电极针的纵向延伸的表面面向绝缘表面,以使设置在电极针和绝缘表面之间的印刷色粉带电。