公开(公告)号：DE1258517B

公开(公告)日：1968-01-11

申请号：DEJ0025833

申请日：1964-05-14

Applicant: IBM

Inventor： HELLER WILLIAM R ,  KUMAMOTO JUNJI ,  JOSE SAN ,  LUZZI JOHN JOSEPH R ,  JUN JOHN CLANCEY POWERS

IPC: G02F1/15 ,  G02F1/17

Abstract: 1,018,806. Laminates. INTERNATIONAL BUSINESS MACHINES CORPORATION. May 6, 1964 [May 16, 1963], No. 18760/64. Heading B5N. [Also in Division H4] An optical element containing material which changes in refractive index when subjected to an electric field may be constructed as illustrated in Fig. 2 of two glass slides 34, 36 on which are cast films of conducting gelatine 30, 32 having thin copper wires 38 connected thereto. A thin film of " Mylar " (Registered Trade Mark) 40 is applied to the surface of both gelatine films and a layer of the electro-optic material 42 sandwiched therebetween.

公开(公告)号：DE1522644A1

公开(公告)日：1969-10-02

申请号：DEJ0031397

申请日：1966-07-25

Applicant: IBM

Inventor： DAVID SHATTUCK MEREDITH ,  VAHTRA ULO ,  JOSE SAN ,  ANDREW NEPELA DANIEL

IPC: G03G5/06 ,  G03G5/07 ,  G03G13/04 ,  G03G17/00 ,  G03G13/22

Abstract: 1,092,618. Photoconductive composition. INTERNATIONAL BUSINESS MACHINES CORPORATION July 21, 1966 [July 26, 1965], No 32707/66 Heading H1K [Also in Division G2] A photoconductive composition comprises an organic photoconductor a dyestuff sensitizer and an activator selected from the group consisting of carboxylic acids, and their anhydrides, nitrophenols and nitro anilines. In the specific embodiments, the photoconductors are polyvinyl carbazole; 1 - phenyl - 3 - (41 - dimethyl amino styryl) - 5 - (4 11 - dimethylaminophenyl) pyrazoline; 1,3 - diphenyl - 5(41- dimethylaminophenyl) pyrazoline; 1,3,5 - triphenyl pyrazoline; 1,3,4,5 - tetraphenylimidazole - 2 - thione and 1 - formyl (2,5 - bisp - dimethyl aminophenyl) 1,3,4 - triazole; the dyestuffs Malachite Green, Victoria Blue B, and Ethyl Violet and the activators 3,5-dinitrobenzoic acid; tetrachlorophthalic anhydride; 6,61 - tetranitrodiphenic acid; 2,2 1 ,4,4 1 ,6,6 1 - hexanitrodiphenylamine and picric acid. Resin binders such as PVA and polystyrene are exemplified whilst many others are listed. Lists of suitable polymeric and monomeric photoconductors, sensitizing dyes and activators are given. The composition may be coated on to a support of Cu, Al, Zn, Sn, Pb, Fe, paper, Cu, or Al-coated polyethylene terephthalate, or Nesa-glass. The compositions disclosed exhibit persistent polarization when exposed image-wise and are then charged electrostatically. The persistent conductivity pattern is erased by heating to 100-150‹ C. for 5 seconds.

公开(公告)号：DE1172439B

公开(公告)日：1964-06-18

申请号：DEJ0018612

申请日：1960-08-23

Applicant: IBM

Inventor： BRUNNER RUSSEL KEPPE ,  JOSE SAN

IPC: G11B5/40 ,  G11B5/60

Abstract: 916,436. Magnetic recording &c. heads; supporting. INTERNATIONAL BUSINESS MACHINES CORPORATION. July 29, 1960 [Aug. 25, 1959], No. 26548/60. Class 40 (2). To prevent air-spaced magnetic heads contacting records moving below a critical speed, a centrifugal switch 66 energizes a solenoid 60, without whose operation, the heads cannot be engaged. A multiple-disc recorder has pairs of heads 15, gimbally mounted on arms 14 and urged towards double-sided records 10 by torsion members 24 moved in unison by trellis levers 28, 30. Levers 36, 44 move in unison about a pivot 42, when dogs 56, 58 on their outer ends are locked together by an encompassing bifurcate member 62, whereupon an actuator 82 rotates all the levers clockwise, the tail end 52 of the primary lever being latched under a member 70. When the record speed falls to danger level, the solenoid 60 releases the dogs 56, 58, the levers 36, 44 move independently, the heads are withdrawn by a spring 74 and a pin 75 trips the latch 70 to restore all the members to their rest positions.