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公开(公告)号：JP2001242358A
公开(公告)日：2001-09-07
申请号：JP2001000074
申请日：2001-01-04
Applicant: IBM
Inventor： CHAN BENSON , COHEN MITCHELL S , FORTIER PAUL F , FREITAG LADD W , HALL RICHARD R , JOHNSON GLEN W , LIN HOW TZU , SHERMAN JOHN H
Abstract: PROBLEM TO BE SOLVED: To provide an improved assembly for joining between a horizontal optical fiber cable and a vertical optoelectronic die. SOLUTION: A package is provided in which an optical fiber cable of 12-channel width is joined to a 12-channel vertical resonator type surface emitting laser(VCSEL) transmitter and a multi-channel perpendicularly aligned integrated die(PAID) receiver. According to this package, the height of an assembly package may be lowered by vertically facing a certain die that is parallel to the optical fiber cable and by horizontally facing a certain other die. In this assembly, a vertical optoelectronic die may be vertically connected to a horizontal laminate through a flexible circuit.
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公开(公告)号：DE10065034A1
公开(公告)日：2001-08-09
申请号：DE10065034
申请日：2000-12-23
Applicant: IBM
Inventor： CHAN BENSON , COHEN MITCHELL S , FORTIER PAUL F , FREITAG LADD W , HALL RICHARD R , JOHNSON GLEN W , LIN HOW TZU , SHERMAN JOHN H
Abstract: The module is operatively connected to a host card, and includes a laminate for carrying optoelectronic components, an amplifier chip and a flexible circuit for receiving the amplified electrical signals from the amplifier chip. An optoelectronic chip is electrically connected to the flexible circuit and receives the amplified electrical signals generated by the amplifier chip, and produces optical signals in response. Independent claims are included for an optoelectronic sub-module, a compact module article, a transmitting optoelectric sub-module, an electronic compact sub-module, and a method of coupling a fibre-optical cable to a converter chip.
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公开(公告)号：CA1221831A
公开(公告)日：1987-05-19
申请号：CA465431
申请日：1984-10-15
Applicant: IBM
Inventor： AFZALI-ARDAKANI ALI , COHEN MITCHELL S , PENNINGTON KEITH S , SACHDEV KRISHNA G
Abstract: RECORDING MATERIALS OF IMPROVED LUBRICITY FOR USE IN ELECTROEROSION PRINTING Electroerosion recording materials are provided with a surface lubricant film of particulate lubricating nonconductive graphite fluoride and optional conductive materials in a polymeric binder. The lubricating agents reduce stylus scratching of the conductive layer during electroerosion printing, improve contrast, provide a beneficial coating on the writing electrode or stylus and improve the handling and writing characteristics of the recording material. The lubricating agents/polymer films are especially useful (1) where the substrate of the recording material is light transmissive and, after the electroerosion process, the resulting product is suitable for direct-negative applications and (2) where direct offset masters are produced by removal of noneroded lubricant film.
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4.发明专利
公开(公告)号：CA1221833A
公开(公告)日：1987-05-19
申请号：CA469462
申请日：1984-12-06
Applicant: IBM
Inventor： SACHDEV KRISHNA G , PENNINGTON KEITH S , COHEN MITCHELL S
Abstract: ELECTROEROSION PRINT MEDIA HAVING PROTECTIVE COATINGS MODIFIED WITH ORGANOTITANIUM REAGENTS The present invention provides an improved electroerosion recording medium which comprises, in a preferred embodiment, a non-conductive support, a hard, abrasion resistant layer, preferably comprising an organic polymer matrix containing an inorganic particulate material, a thin conductive film, typically of a metal such as aluminum, and an abrasion resistant overlayer that most preferably comprises a solid conductive lubricant dispersed in an organotitanium reagent modified polymer system. The overlayer is highly adherent to the conductive surface, has a low organic binder content and provides effective protection against abrasion of the conductive layer and fouling of a print head during electroerosion printing.
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公开(公告)号：CA1212581A
公开(公告)日：1986-10-14
申请号：CA444840
申请日：1984-01-06
Applicant: IBM
Inventor： AVIRAM ARI , COHEN MITCHELL S
Abstract: THERMAL TRANSFER PRINTING PROCESSES WITH ELECTROEROSION AND MATERIALS THEREFOR Processes for thermal transfer printing. are disclosed which comprise electroerosion printing to produce an image bearing element and exposing the imaged element to irradiation so as to permit transfer of thermographic ink from an associated ink layer or ink-containing element onto an ink receiving substrate thus producing copies of the image carried by the image bearing element. Also, described are products for use in such processes.
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Patent Agency Ranking
公开(公告)号：FR2396385A1
公开(公告)日：1979-01-26
申请号：FR7817713
申请日：1978-06-07
Applicant: IBM
Inventor： COHEN MITCHELL S , PUGH EMERSON W
Abstract: These improved current controlled transfer switches are particularly useful for changing the propagation path of very small bubble domains without requiring large amounts of transfer current. The underlying principle is that the transfer operation occurs when the magnitude of the magnetic drive field used to move bubble domains has diminished to a small value, or is zero. This means that the magnetic field due to current in the switch does not have to overcome the effect of the drive field and therefore can be very small while still being effective. This is termed a "start/stop" operation and in one embodiment, current-assisted transfer is achieved by utilizing a change in the sequence of the magnetic drive field (generally an in-plane rotating field) at the time of transfer. In another embodiment, a continuous "three-quadrant" magnetic drive field is used instead of the customary 360 DEG rotating drive field. This three-quadrant field cycle is also the normal cycle for bubble storage operations and bubble motion elsewhere in the magnetic circuit is not disturbed by the switching operation because all devices are designed to operate with only one type of drive field cycle, which is the three-quadrant cycle. Switches operating in accordance with these principles do not have to have a particular design; in fact, several different designs are illustrated.
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公开(公告)号：CA1124400A
公开(公告)日：1982-05-25
申请号：CA300434
申请日：1978-04-04
Applicant: IBM
Inventor： COHEN MITCHELL S , PUGH EMERSON W
Abstract: IMPROVED BUBBLE DOMAIN TRANSFER SWITCHES These improved current controlled transfer switches are particularly useful for changing the propagation path of very small bubble domains without requiring large amounts of transfer current. The underlying principle is that the transfer operation occurs when the magnitude of the magnetic drive field used to move bubble domains has diminished to a small value, or is zero. This means that the magnetic field due to current in the switch does not have to overcome the effect of the drive field and therefore can be very small while still being effective. This is termed a "start/stop" operation and in one embodiment, current-assisted transfer is achieved by utilizing a change in the sequence of the magnetic drive field (generally an in-plane rotating field) at the time of transfer. In another embodiment, a continuous "three-quadrant" magnetic drive field is used instead of the customary 360.degree. rotating drive field. This threequadrant field cycle is also the normal cycle for bubble storage operations and bubble motion elsewhere in the magnetic circuit is not disturbed by the switching operation because all devices are designed to operate with only one type of drive field cycle, which is the three-quadrant cycle. Switches operating in accordance with these principles do not have to have a particular design; in fact, several different designs are illustrated.
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公开(公告)号：CA1114951A
公开(公告)日：1981-12-22
申请号：CA309386
申请日：1978-08-15
Applicant: IBM
Inventor： AHN KIE Y , COHEN MITCHELL S , POWERS JOHN V , TAO LUNG-JO
Abstract: PEDESTAL BUBBLE DOMAIN CHIP AND PROCESSES FOR MAKING SAME An improved magnetic bubble domain chip and processes for making the chip are described. The chip is comprised of a magnetic bubble domain film in which small bubble domains can be moved, and overlying layers of metallurgy. The layer of metallurgy closest to the bubble film is an electrically conductive layer having apertures (or recesses) therein. This layer is patterned to provide current carrying conductors. The next overlayer is a layer of magnetic material having in-plane magnetization which is patterned to provide the propagation elements used to move the bubble domains. In a particular embodiment, the magnetic layer is comprised of a magnetically soft material, such as permalloy. The chip is characterized by the provision of insulating pedestals located in the apertures of the conductive layer. These insulating pedestals are located in the regions of the chip used for sensing (and/or bubble generation). That is, they take the place of the thick conductive material in those areas of the chip. The sensor and bubble generators are usually portions of the in-plane magnetic layer. If the height of the insulating pedestals is the same as the height of the conductive layer, planarization is achieved and each overlayer lies in a single plane, where the planes are parallel to one another. However, the pedestal can be of any desired height. This chip is particularly advantageous for use with bubble domains having diameters of about 1 micron and less, since the pedestal magnetic chip can be provided by single level masking techniques in which only a single critical masking step is required. The insulating pedestal can be formed prior to deposition of the current carrying conductive layer, or subsequent to deposition of this layer.
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公开(公告)号：FR2393397A1
公开(公告)日：1978-12-29
申请号：FR7813747
申请日：1978-04-05
Applicant: IBM
Inventor： BEALL GREGORY W , COHEN MITCHELL S , KRYDER MARK H
Abstract: SLM field access bubble devices which include at least one conductor crossing a bubble propagation path have severely limited operating margins (especially for small bubbles) for the bubble in the vicinity of the conductor. Apparatus and method for operating such a bubble device is disclosed which improves the device operation in this region. The improved apparatus and method provides an additional field source with a sense and magnitude to support the bubble when it reaches the conductor region. Such a field source, as disclosed, includes a current pulse in the conductor.
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公开(公告)号：CA1233022A
公开(公告)日：1988-02-23
申请号：CA475571
申请日：1985-03-01
Applicant: IBM
Inventor： SACHDEV KRISHNA G , SHEAR STEPHEN A , PENNINGTON KEITH S , COHEN MITCHELL S
Abstract: IMPROVED ELECTROEROSION PRINTING MEDIA USING DEPOLYMERIZABLE POLYMER COATINGS of the Invention Improved electroerosion recording media are described in which ablatable polymers are used in the electroerosion recording medium. This medium includes at least a substrate or support layer, a base layer which protects the substrate, a thin film of conductive material on the base layer and which can be eroded, and a protective overcoat layer. Ablatable polymers are used as binders in either the base layer or the top protective layer, or both, in order to provide advantages during electroerosion. These ablatable polymers undergo thermally induced depolymerization in such a way that the result is the formation of volatile monomeric or low molecular weight species as the predominant products, with little or no adherent residue.
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