公开(公告)号：US3651498A

公开(公告)日：1972-03-21

申请号：US3651498D

申请日：1970-03-02

Applicant: IBM

Inventor： MAGILL PETER J ,  MCCURRY ROBERT E ,  SPEICHER CHARLES A

IPC: G11C13/04 ,  G11C11/14

CPC classification number: G11C13/042 ,  G03H1/0256 ,  G03H2240/15

Abstract: Random selection of holograms from an array comprised of a plurality of holograms is achieved by light reflections from the selected holograms upon illuminating the entire array with a broad beam of coherent light. The array of discrete holograms is overlaid with a reflective magnetizable film, normally uniaxially oriented. When the magnetization vector in the film is rotated in any one or more of the discrete hologram areas, a proportional rotation in the plane of polarization of the reflected light will occur and be directed to a readout diode array. Disposed in the path of the reflected light is an analyzer which is set for maximum extinction when no readout is desired and minimum extinction when a readout is desired, the diode array providing electrical readout signals corresponding to the information read out from the selected hologram.

Abstract translation: 通过用宽泛的相干光束照射整个阵列，通过来自所选择的全息图的光反射来实现来自由多个全息图组成的阵列的全息图的随机选择。 离散全息图的阵列用反射可磁化膜覆盖，通常是单向取向的。 当膜中的磁化矢量在任何一个或多个离散的全息区域中旋转时，反射光的偏振平面中的比例旋转将发生并且被引导到读出二极管阵列。 在反射光的路径中设置的分析器是当不需要读出时设置为最大消光的分析器，当期望读出时最小消光，二极管阵列提供对应于从所选择的全息图读出的信息的电读取信号。

公开(公告)号：CA1007284A

公开(公告)日：1977-03-22

申请号：CA163473

申请日：1973-02-08

Applicant: IBM

Inventor： CAVANAUGH LAWRENCE R ,  MCCURRY ROBERT E

IPC: B41J2/425 ,  G03G15/32 ,  G06K15/10 ,  H04N1/29

Abstract: An improved printing head for forming electrostatic images on a dielectric surface by controlling the relative ion concentration in a gas stream moving through a slot and directed upon said dielectric surface. Application of an electric field across selected pairs of an array of spaced electrodes in the slot enables the stream to vary in ion concentration so as to cause the formation of a desired linear charge configuration on the dielectric. Selective application of low voltage electric fields to selected arrays of the electrodes causes formation of desired image charge configurations on the dielectric surface.

公开(公告)号：CA944009A

公开(公告)日：1974-03-19

申请号：CA122040

申请日：1971-09-03

Applicant: IBM

Inventor： MAGILL PETER J ,  SPEICHER CHARLES A ,  MCCURRY ROBERT E

IPC: G03G15/32

Abstract: 1357965 Facsimile reproducer INTERNATIONAL BUSINESS MACHINES CORP 27 July 1971 [4 Sept 1970] 35064/71 Heading H4F [Also in Divisions B6 and H1] A latent image is formed on a dielectric substrate by generating a stream of ions and selectively deflecting the stream by a gas stream either to fall on the substrate or away from the substrate. A chamber 1 includes insulating walls 1f, 1s, 1sa, 1b and an insulating tap 2 which accommodates an electrode 5 charged to high voltage with respect to a grounded conductive base-plate 3 to generate a corona discharge. An aperture 6 in the base-plate 3 communicates with a passage 16 in a head portion 13. A passage 17 communicates with the passage 16 and conducts a stream of gas to deflect the stream of ionized gas in the passage 16 when required. As shown, the deflected stream passes to a drain 18, but in an alternative embodiment the deflected stream is directed toward the substrate (not shown). A plurality of electrodes may be assembled in a single chamber, each electrode being associated with a respective outlet passage (Fig. 2, not shown). In place of a corona discharge, α, #, #, X or U.V. radiation, triboelectricity or microwave breakdown may be employed to ionize the gas in the chamber.