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    MICROMIST JET PRINTER
    13.
    发明专利
    MICROMIST JET PRINTER 未知

    公开(公告)号：CA1085444A

    公开(公告)日：1980-09-09

    申请号：CA252632

    申请日：1976-05-14

    Applicant: IBM

    Inventor： HOCHBERG FREDERICK ,  PENNEBAKER WILLIAM B ,  PENNINGTON KEITH S

    IPC: G01D15/16 ,  B41J3/04

    Abstract: MICROMIST JET PRINTER A micromist printing arrangement wherein a micromist of ink particles, provided by an ultrasonic nebulizer, is forced through a small nozzle to form an aerosol jet. The micromist ink particles are entrained in the jet and focused to print a narrow width region which is substantially smaller in size than the overall jet diameter and the nozzle opening. Particle size, jet stream velocity and air or other carrier gas viscosity are considered in establishing focusing characteristics of the aerosol jet, which is directed against the paper to wet the same, thereby obtaining dense, well defined print lines. According to a first embodiment, modulation of the aerosol jet is achieved by fluid logic control whereby a vacuum is introduced into the path of the aerosol jet to shunt it from its printing path. In another embodiment, control may be achieved through the use of sonic excitation of turbulence into the aerosol jet. The sonic excitation changes the aerosol jet from laminar flow to turbulent flow, resulting in a reduction of the velocity of the aerosol jet such that the aerosol ink particles do not wet the paper.

    18.
    发明专利
    未知

    公开(公告)号：DE2541634A1

    公开(公告)日：1976-07-08

    申请号：DE2541634

    申请日：1975-09-18

    Applicant: IBM

    Inventor： HOCHBERG FREDERICK ,  PENNINGTON KEITH S

    IPC: B41J2/015 ,  B41J2/21 ,  B41J2/215 ,  G03G19/00 ,  H04N1/23 ,  B05D5/12 ,  B05C19/00 ,  H01F10/00 ,  B41M3/00 ,  H04L21/04 ,  H04N1/26

    Abstract: 1489679 Printing INTERNATIONAL BUSINESS MACHINES CORP 15 Oct 1975 [31 Dec 1974] 42146/75 Heading B6C A method of marking a substrate comprises contacting the substrate with a micromist containing magnetically attractable material i.e. a mist whose particle size is such as not to wet the substrate in the absence of an applied magnetic field, and applying a magnetic field pattern to deposit material The micromist may be produced by ultrasonic vibration. The magnetic field may be generated in known fashion by selective heads adjacent the substrate printed on the side opposite the micromist, or by using selectively energizable heads to produce the pattern on a roller or endless band adjacent this side. Alternatively, a magnetized endless band may be exposed to the micromist, and the pattern formed thereon transferred to the final substrate.

    19.
    发明专利
    未知

    公开(公告)号：DE1277199B

    公开(公告)日：1968-09-12

    申请号：DEJ0023163

    申请日：1963-02-12

    Applicant: IBM

    Inventor： CHEROFF GEORGE ,  HOCHBERG FREDERICK ,  REISMAN ARNOLD ,  TRIEBWASSER SOL

    IPC: B22F3/10 ,  C04B35/547 ,  C04B35/64 ,  H01L21/00

    Abstract: In a sintering process, the vapour pressure of the flux used is maintained substantially constant so that the flux concentration does not decrease during the process and affect the sintering. Preferred materials are photo-conductors such as CdSe and CdS or a solid solution of both using CdCr2, CdBr2 or CdI2 as fluxes. Numerous examples are given utilizing these materials, the sintering treatments involving heating to temperatures between 522 DEG and 600 DEG C. for 5-20 minutes in an atmosphere of 0.2 to 1.7% O and the rest N and the mixtures having between 5 and 20 mol. per cent flux; grain sizes between 4 and 15 m result. Copper may be added as an impurity. The vapour pressure is maintained either by using a small volume container or by providing an auxiliary source for vapour consisting merely of the flux material or alternatively using a second supply of the mixture which is being sintered. This auxiliary source may be covered with a layer of Al2O3 which acts as a molecular sieve to govern the rate of evaporation. Fig. 3 shows a suitable small volume inner container 10 which is closed by a substrate 11 carrying on its inner surface the material to be sintered. The container is carried on an endless chain 6 in the heating apparatus shown in Fig. 2 which comprises a glove box 1 and furnace 12. Means are provided for circulating and controlling the atmosphere. When only small quantities of flux are used which are insufficient to fill the container with vapour without affecting the residue, secondary sources of flux vapour are provided in the bottom of the container 10.

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