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25 条记录 (耗时 0.011 秒)

    Electrically assisted printing system
    1.
    发明授权
    Electrically assisted printing system 失效
    电动辅助印刷系统

    公开(公告)号：US3619720A

    公开(公告)日：1971-11-09

    申请号：US3619720D

    申请日：1969-08-28

    申请人： HURLETRON INC

    发明人： COBERLEY DANIEL A

    IPC分类号： B41F9/00 ,  B41M1/42 ,  B41F9/06 ,  B41M5/20

    CPC分类号： B41M1/42 ,  B41F9/001

    摘要： A printing system having an electric circuit supplying an output potential to assist transfer of ink to a dielectric substrate, the potential being gradually increased up to a breakdown potential of the substrate, for example of a rate of 10 percent per hour. Each time breakdown potential is reached, the applied potential is set back 10 percent and the increase started again, so that the applied potential will follow variations in the breakdown potential of the substrate. A severe fault in the substrate results in removal of the output potential during a timed interval followed by a rapid potential buildup toward breakdown potential, after which the normal cycle is resumed.

    Method for covering a printing roller
    4.
    发明授权
    Method for covering a printing roller 失效
    覆盖打印滚筒的方法

    公开(公告)号：US3677856A

    公开(公告)日：1972-07-18

    申请号：US3677856D

    申请日：1969-08-25

    申请人： HURLETRON INC

    发明人： MACCALLUM JAMES A ,  HOWARD VELMAR E ,  COBERLEY DANIEL A

    IPC分类号： B41N7/00 ,  B65H81/00

    CPC分类号： B41N7/005 ,  B41N2207/02

    摘要： A printing roller having an extruded covering sleeve, in one form having electrical characteristics for optimum electrically assisted printing; and in another form having optimum solvent resistance. A method and apparatus for applying such sleeves including a belt wrapped at least 360 degrees about the sleeve and driven by rotation of the roller and moved progressively along the sleeve to apply the sleeve to the roller and to remove gaseous entrapment, and preferably also to disperse a reservoir of adhesive over the interface between the roller and sleeve.

    Rotogravure cylinder proofing method
    6.
    发明授权
    Rotogravure cylinder proofing method 失效
    滚轮滚筒打样方法

    公开(公告)号：US4759285A

    公开(公告)日：1988-07-26

    申请号：US72910

    申请日：1987-07-14

    申请人： Russel N. Fox ,  Keith K. Klett

    发明人： Russel N. Fox ,  Keith K. Klett

    IPC分类号： B41F9/04 ,  B41M1/00 ,  B41M1/42 ,  B41F9/00 ,  B41F29/04

    CPC分类号： B41F9/04 ,  B41M1/00 ,  B41M1/42

    摘要： A method for conducting a proofing operation of a rotogravure printing cylinder includes preparation of a steel drum having in sequence from the outer steel surface a layer of plastic such as Mylar.RTM., a blanket consisting of a rubber composite material, a paper/foil layer with the foil side facing outwardly, and a proofing sheet consisting of normal printing paper. The rotogravure cylinder which is to be proofed is brought into contact with the thus-prepared drum, and a high voltage is applied to the foil via the proofing sheet. The rotogravure cylinder is inked and rotated through one printing revolution so that a complete impression is made on the proofing sheet. The high voltage assists in the transfer of ink from the cups of the rotogravure cylinder to the proofing sheet. The impression produced by the rotogravure cylinder can then be checked before the rotogravure cylinder is sent to a user.

    摘要翻译： 用于进行轮转凹版印刷滚筒的打样操作的方法包括制备钢桶，其从外钢表面依次由一层塑料如Mylar TM，由橡胶复合材料组成的橡皮布，具有 箔面朝外，以及由普通打印纸构成的打样片。 待打样的轮转凹版滚筒与如此制备的滚筒接触，并通过打样片向箔片施加高电压。 轮转凹版滚筒通过一次打印旋转进行着墨和旋转，从而在打样片上进行完整的印象。 高电压有助于将油墨从轮转凹版滚筒的杯子转移到校样片。 然后可以在将轮转凹版滚筒送到使用者之前检查由凹版印刷滚筒产生的印象。

    Digital motor control system for web registration
    7.
    发明授权
    Digital motor control system for web registration 失效
    数字电机控制系统WEB登录

    公开(公告)号：US3870936A

    公开(公告)日：1975-03-11

    申请号：US25676972

    申请日：1972-05-25

    申请人： HURLETRON INC

    发明人： COBERLEY DANIEL A

    IPC分类号： B41F13/02 ,  H02P5/46

    CPC分类号： B41F13/025 ,  Y10T83/148

    摘要： In an illustrated embodiment scanner signals produced by marks of varying intensity on a moving web are effectively transmitted by self-biased capacitively coupled field effect transistors without overloading. The scanner circuit reliably responds to scanner pulses of variable duration and frequency over a wide range without readjustment and includes an inverted current restorer for driving an output transistor stage while providing substantial noise rejection. A servo motor is operable to adjust web errors as signified by the phase of the scanner signal relative to a reference signal, and a thyristor controlled bidirectional drive for the servo motor responds to excessive back voltage due to overrunning of the motor to automatically reverse energize the motor. Preferably the timing circuit for the thyristor is coordinated with the input alternating current power to insure that initial turn on of the thyristor in each cycle will accomodate a maximum error signal to the motor.

    摘要翻译： 在图示实施例中，通过自偏压电容耦合场效应晶体管有效地传输在移动幅材上由变化强度的标记产生的扫描器信号，而不会过载。 扫描器电路在宽范围内可靠地响应可变持续时间和频率的扫描器脉冲，而无需重新调整，并且包括用于驱动输出晶体管级同时提供实质的噪声抑制的反相电流恢复器。 伺服电动机可操作以通过扫描仪信号相对于参考信号的相位来调节纸张错误，并且用于伺服电动机的可控硅控制的双向驱动器由于电动机的超越而响应于过大的反向电压，以自动反向对 发动机。 优选地，晶闸管的定时电路与输入交流电源协调，以确保每个周期中晶闸管的初始接通将容纳最大误差信号给电动机。

    Register control system and method
    8.
    发明授权
    Register control system and method 失效

    公开(公告)号：US3624359A

    公开(公告)日：1971-11-30

    申请号：US3624359D

    申请日：1969-10-31

    申请人： HURLETRON INC

    发明人： ROOTE JAY C

    IPC分类号： B65H23/04 ,  B41F9/02 ,  B65H23/22

    CPC分类号： B65H23/046

    摘要： A mark discriminator circuit for a plural station web apparatus wherein marks are cyclically applied in line on a web at successive stations, and a scanner produces a series of scanner pulses in each repeat interval, the circuit being operable to respond to a pair of such scanner pulses whose spacing is a measure of a registration condition of the web.