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1. 发明授权

US4378754A Toner applicator system for magnetography 失效
公开(公告)号：US4378754A
公开(公告)日：1983-04-05
申请号：US290274
申请日：1981-08-05
申请人： Houshang Rasekhi , Alfred M. Nelson , John S. Kula, Jr. , John J. Sudano
发明人： Houshang Rasekhi , Alfred M. Nelson , John S. Kula, Jr. , John J. Sudano
IPC分类号： G03G15/09 , G03G19/00
CPC分类号： G03G19/00 , G03G15/09
摘要： In a high-quality, high-speed magnetographic apparatus, an arrangement for developing the latent magnetic images of a readily-imagable magnetizable medium (in particular a relatively high-coercivity medium) with magnetically attractable toner particles. A rotatable toner developer is positioned proximate to the medium to define therebetween a toning zone, with the developer being structured to magnetically provide toner particles in contact with the medium at the toning zone and to impart to the toner particles at least at and approaching the toning zone a direction of movement relative to the medium which is in opposition to the latter. A concentration of substantially fluidized and magnetically confined toner particles is thus provided which is urged into contact with the medium for effectively developing the latent images even with the medium moving at high speed relative to the developer and without adversely affecting the latent magnetic images of the medium. A magnetic field enhancer is positioned proximate to the toning zone on the opposite side of the magnetic medium from the developer, which effectively enhances the shape of the magnetic field at the toning zone in the general direction toward the magnetic medium thereby increasing the magnetically generated toner contact pressure. A scavenger arrangement is included for collecting any air-borne toner, for removing excess toner residing on the developed image areas of the medium, and for removing stray toner particles residing on the non-imaged areas and the back of the medium. The continuity of toning provided to the medium is facilitated by an eccentrically operated toner rake arrangement situated in the toner bin for urging the toner particles in the toner bin toward the developer. Alternatively, the toner can be rendered fluidized by a oscillating floor or wall arrangement resiliently coupled to the remainder of the toner bin. The developer is provided with a channel arrangement governing the approach of the toner particles thereto which are received from the action of say the toner rake. The channel arrangement ensures that the toner is introduced to the developer in a well defined narrow band the width dimension of which is commensurate with the width of the desired imaged portion of the magnetic medium. The developer station is particularly effective in both a substantially horizontal orientation, underneath the magnetic medium, and at a substantially vertical angle and proximate to the outside surface of the medium.

2. 发明授权

US4399422A Magnetizing apparatus 失效
标题翻译：磁化装置
公开(公告)号：US4399422A
公开(公告)日：1983-08-16
申请号：US297672
申请日：1981-08-31
申请人： Alfred M. Nelson , Houshang Rasekhi , John J. Sudano
发明人： Alfred M. Nelson , Houshang Rasekhi , John J. Sudano
IPC分类号： G11B5/852 , H01F13/00
CPC分类号： G11B5/852 , H01F13/00
摘要： Apparatus is provided for uniformly premagnetizing magnetic media, such as wide magnetic tapes and/or for substantially uniformly orienting the magnetic particles in the slurry of the magnetizable layer of magnetic media during their formation. Premagnetization constitutes magnetizing the medium in a preselected direction, such as the transverse direction (i.e., perpendicular to the intended direction of movement of the recording medium past a recording head but in the plane of the medium), prior to magnetically recording information thereon. The apparatus comprises a number of predeterminably arranged small magnets disposed proximate to the medium which obviates the need for large, expensive, heavy magnets and magnet systems. A continuous transverse saturation level of magnetization is provided in the medium with virtually no vertical or longitudinal magnetic components or anomalous effects. A preferred arrangement comprises a number of wafer magnets each having an elongated edge of a pole face disposed proximate to the medium and at a preselected acute angle relative to the direction of intended movement of the magnetic medium.
摘要翻译：提供了用于均匀预磁化磁介质（例如宽磁带）和/或用于在其形成期间将磁性介质的可磁化层的浆料中的磁性颗粒基本均匀定向的装置。在磁性地记录信息之前，预磁化构成以预选的方向，例如横向方向（即，垂直于记录介质经过记录头的移动方向，但在介质的平面内）磁化介质。该装置包括靠近介质设置的许多可预定布置的小磁体，其消除了对大型，昂贵的重磁体和磁体系统的需要。在介质中提供连续的横向饱和磁化水平，实际上没有垂直或纵向磁性成分或异常效应。优选的布置包括多个晶片磁体，每个晶片磁体各自具有靠近介质设置的极面的细长边缘，并且相对于磁介质的预期移动方向以预选的锐角。

3. 发明授权

US4214543A Electronically controlled top feed arrangement for a sewing machine 失效
标题翻译：用于缝纫机的电子控制顶部进料装置
公开(公告)号：US4214543A
公开(公告)日：1980-07-29
申请号：US55136
申请日：1979-07-05
申请人： Stephen A. Garron , Robert Sedlatschek , John J. Sudano
发明人： Stephen A. Garron , Robert Sedlatschek , John J. Sudano
IPC分类号： D05B27/06 , D05B19/16 , D05B27/04
CPC分类号： D05B27/04 , D05B19/16
摘要： A sewing machine is provided with an electronically controlled top feed arrangement wherein an upper feed dog and a presser foot are adapted to alternately apply and relieve pressure upon a work fabric, the upper feed dog and the presser foot being oppositely phased with respect to each other. A linear actuator is coupled to reciprocate the upper feed dog along a feed line and a memory stores feed data including for each stitch a first data portion for controlling the feed stroke of the upper feed dog and a second data portion for controlling the return stroke of the upper feed dog.
摘要翻译：缝纫机设置有电子控制的顶部进料装置，其中上部进料斗和压脚适于交替地施加和减轻对工作织物的压力，上部进料斗和压脚相对于彼此相对地定位。线性致动器被联接以沿着馈送线往复运动上馈送狗，并且存储器存储包括针对每个针迹的馈送数据的第一数据部分，用于控制上馈犬的进给冲程和用于控制上送料爪的返回冲程的第二数据部分上饲料狗。

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