Interactive method for lapping transducers
An interactive system for lapping transducers has an abrasive surface that communicates with the transducers in order to provide information for controlling the lapping and testing the transducers. The lapping body is preferably shaped as a disk, drum or tape, and communicates with the transducer wi...
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| creator | PARCHER MARK W HAMILTON HAROLD J TANG KENNETH K. H HENNESSY JAMES P GUTOWSKI DAVID T AZARIAN MICHAEL H BALDWINSON MICHAEL A |
| description | An interactive system for lapping transducers has an abrasive surface that communicates with the transducers in order to provide information for controlling the lapping and testing the transducers. The lapping body is preferably shaped as a disk, drum or tape, and communicates with the transducer with a type of signal that the transducer is designed to read and/or write. Thus for lapping a magnetic head or slider to be employed in a hard disk drive, the lapping body contains a magnetic medium layer that is either prerecorded or written by the head during lapping, while the signal received by the head is monitored and analyzed by a processor in order to determine, in part, when to terminate lapping. A series of transducers can be simultaneously lapped while individually monitored, so that each transducer can be removed from the lapping body individually upon receipt of a signal indicating that transducer has been lapped an optimal amount. Transducers for employment in drive systems can also be tested for performance characteristics by utilizing lapping bodies having surface characteristics similar to those found in the drive system. |
| format | Patent |
| fullrecord | <record><control><sourceid>epo_EVB</sourceid><recordid>TN_cdi_epo_espacenet_US5632669A</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><sourcerecordid>US5632669A</sourcerecordid><originalsourceid>FETCH-epo_espacenet_US5632669A3</originalsourceid><addsrcrecordid>eNrjZNDyzCtJLUpMLsksS1XITS3JyE9RSMsvUshJLCjIzEtXKClKzCtOKU1OLSrmYWBNS8wpTuWF0twM8m6uIc4euqkF-fGpxQWJyal5qSXxocGmZsZGZmaWjsaEVQAAwzoo5A</addsrcrecordid><sourcetype>Open Access Repository</sourcetype><iscdi>true</iscdi><recordtype>patent</recordtype></control><display><type>patent</type><title>Interactive method for lapping transducers</title><source>esp@cenet</source><creator>PARCHER; MARK W ; HAMILTON; HAROLD J ; TANG; KENNETH K. H ; HENNESSY; JAMES P ; GUTOWSKI; DAVID T ; AZARIAN; MICHAEL H ; BALDWINSON; MICHAEL A</creator><creatorcontrib>PARCHER; MARK W ; HAMILTON; HAROLD J ; TANG; KENNETH K. H ; HENNESSY; JAMES P ; GUTOWSKI; DAVID T ; AZARIAN; MICHAEL H ; BALDWINSON; MICHAEL A</creatorcontrib><description>An interactive system for lapping transducers has an abrasive surface that communicates with the transducers in order to provide information for controlling the lapping and testing the transducers. The lapping body is preferably shaped as a disk, drum or tape, and communicates with the transducer with a type of signal that the transducer is designed to read and/or write. Thus for lapping a magnetic head or slider to be employed in a hard disk drive, the lapping body contains a magnetic medium layer that is either prerecorded or written by the head during lapping, while the signal received by the head is monitored and analyzed by a processor in order to determine, in part, when to terminate lapping. A series of transducers can be simultaneously lapped while individually monitored, so that each transducer can be removed from the lapping body individually upon receipt of a signal indicating that transducer has been lapped an optimal amount. Transducers for employment in drive systems can also be tested for performance characteristics by utilizing lapping bodies having surface characteristics similar to those found in the drive system.</description><edition>6</edition><language>eng</language><subject>DRESSING OR CONDITIONING OF ABRADING SURFACES ; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS ; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC ; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS ; GRINDING ; INFORMATION STORAGE ; INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORDCARRIER AND TRANSDUCER ; MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING ; PERFORMING OPERATIONS ; PHYSICS ; POLISHING ; TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION ; TECHNICAL SUBJECTS COVERED BY FORMER USPC ; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS ; TRANSPORTING</subject><creationdate>1997</creationdate><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=19970527&DB=EPODOC&CC=US&NR=5632669A$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,309,781,886,25569,76552</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=19970527&DB=EPODOC&CC=US&NR=5632669A$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>PARCHER; MARK W</creatorcontrib><creatorcontrib>HAMILTON; HAROLD J</creatorcontrib><creatorcontrib>TANG; KENNETH K. 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Thus for lapping a magnetic head or slider to be employed in a hard disk drive, the lapping body contains a magnetic medium layer that is either prerecorded or written by the head during lapping, while the signal received by the head is monitored and analyzed by a processor in order to determine, in part, when to terminate lapping. A series of transducers can be simultaneously lapped while individually monitored, so that each transducer can be removed from the lapping body individually upon receipt of a signal indicating that transducer has been lapped an optimal amount. 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H</creatorcontrib><creatorcontrib>HENNESSY; JAMES P</creatorcontrib><creatorcontrib>GUTOWSKI; DAVID T</creatorcontrib><creatorcontrib>AZARIAN; MICHAEL H</creatorcontrib><creatorcontrib>BALDWINSON; MICHAEL A</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>PARCHER; MARK W</au><au>HAMILTON; HAROLD J</au><au>TANG; KENNETH K. H</au><au>HENNESSY; JAMES P</au><au>GUTOWSKI; DAVID T</au><au>AZARIAN; MICHAEL H</au><au>BALDWINSON; MICHAEL A</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>Interactive method for lapping transducers</title><date>1997-05-27</date><risdate>1997</risdate><abstract>An interactive system for lapping transducers has an abrasive surface that communicates with the transducers in order to provide information for controlling the lapping and testing the transducers. The lapping body is preferably shaped as a disk, drum or tape, and communicates with the transducer with a type of signal that the transducer is designed to read and/or write. Thus for lapping a magnetic head or slider to be employed in a hard disk drive, the lapping body contains a magnetic medium layer that is either prerecorded or written by the head during lapping, while the signal received by the head is monitored and analyzed by a processor in order to determine, in part, when to terminate lapping. A series of transducers can be simultaneously lapped while individually monitored, so that each transducer can be removed from the lapping body individually upon receipt of a signal indicating that transducer has been lapped an optimal amount. Transducers for employment in drive systems can also be tested for performance characteristics by utilizing lapping bodies having surface characteristics similar to those found in the drive system.</abstract><edition>6</edition><oa>free_for_read</oa></addata></record> |
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| subjects | DRESSING OR CONDITIONING OF ABRADING SURFACES FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS GRINDING INFORMATION STORAGE INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORDCARRIER AND TRANSDUCER MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING PERFORMING OPERATIONS PHYSICS POLISHING TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION TECHNICAL SUBJECTS COVERED BY FORMER USPC TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS TRANSPORTING |
| title | Interactive method for lapping transducers |
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