ELECTROCHROMIC PRINTING SYSTEM
    15.
    发明专利

    公开(公告)号:CA1152934A

    公开(公告)日:1983-08-30

    申请号:CA347654

    申请日:1980-03-14

    Applicant: IBM

    Abstract: ELECTROCHROMIC PRINTING SYSTEM An improved electrolytic print fluid is described. The printing fluid is comprised of a bromide agent for the catalyzation of the electro-oxidation of a color forming iodide agent therein. The fluid may include an agent which can form a clathrate complex with the color forming agent, as well as an agent which prevents discoloring of the paper when said fluid is coated on the same. The coated paper is subjected to an electrolytic print method using non-consumable electrode. YO9-78-061

    A conductive pad for electrical connection of an integrated circuit chip

    公开(公告)号:GB2365622A

    公开(公告)日:2002-02-20

    申请号:GB0103577

    申请日:2001-02-14

    Applicant: IBM

    Abstract: A copper pad surface 14 of an IC chip is first prepared, e.g. cleaned by an acid solution, a protection layer 16 of a phosphorus or boron-containing metal alloy is then deposited on the copper pad surface, and then an adhesion layer 18 of a noble metal is deposited on top of the protection layer. The protection layer 16 may be a single layer, or two or more layers intimately joined together formed of a phosphorus or boron-containing metal alloy such as Ni-P, Co-P, Co- W-P, Co-Sn-P, Ni-W-P, Co-B, Ni-B, Co-Sn-B, Co-W-B and Ni-W-B. A suitable thickness for the protection layer is between about 1,000 Ñ and about 10,000 Ñ, and preferably between about 3,000 Ñ and about 7,000 Ñ. The adhesion layer 18 can be formed of a noble metal such as Au, Pt, Pd and Ag to a thickness between about 500 Ñ and about 4,000 Ñ, and preferably between about 1,000 Ñ and about 2,000 Ñ. A nucleation layer of Pd may be deposited between the copper conductive pad surface 14 and the protection layer 16 prior to the electroless deposition of the protection layer. An additional noble metal layer may be deposited on top of the adhesion layer 18 by an electroless Au deposition process to increase the thickness of the final noble metal layer to about 2,000 Ñ 12,000 Ñ, and preferably between about 4,000 Ñ and about 6,000 Ñ. The pad is suitable for a wireband or solder bump connection

    17.
    发明专利
    未知

    公开(公告)号:FR2382486A1

    公开(公告)日:1978-09-29

    申请号:FR7803455

    申请日:1978-02-01

    Applicant: IBM

    Abstract: Water based magnetic colloidal fluids, useable as inks, when prepared by coating chemically precipitated magnetite (Fe3O4) with an adsorption site providing coating agent including certain organic anions, such as sulfates, sulfonates or amino carboxilates, and then dispersing the coated product with non-ionic, anionic or cationic surfactants may exhibit selectably cationic, anionic or non-ionic charge responsiveness.

    18.
    发明专利
    未知

    公开(公告)号:DE2260526A1

    公开(公告)日:1973-07-12

    申请号:DE2260526

    申请日:1972-12-11

    Applicant: IBM

    Abstract: 1369528 Electrolytic recording medium INTERNATIONAL BUSINESS MACHINES CORP 4 Dec 1972 [20 Dec 1971] 55851/72 Heading D2B An electrolytic recording medium comprises a porous medium e.g. paper impregnated with an aqueous solution of NH 4 , Li, Na, or KF. A reducing agent e.g. ascorbic acid, stannous chloride, stannous sulfate, KOH, p-amino phenol, phenylhydrazine, or metal may be included, optionally with a stabilizer e.g. sodium sulfite.

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