公开(公告)号：GB2194757A

公开(公告)日：1988-03-16

申请号：GB8721483

申请日：1987-09-11

Applicant: SONY CORP

Inventor： YAGINO MASANORI ,  TANIGUCHI MASATO ,  ITO YOSHITOMO ,  TAKANO TOSHIMITSU ,  ISHIKAWA WATARU ,  KIKUCHI SADATOSHI ,  ENDO TETSUO

IPC: B41J2/335 ,  B41J2/345 ,  B41J3/20

Abstract: A thermal head which is reduced in restriction in dimension of a substrate to allow reduction in size thereof and wherein the contacting characteristic of the substrate with a platen is improved to assure a high quality of printing. The thermal head has a heat generating resistor element and a driving circuit therefor both formed on a substrate, and a suppporting heat radiating member joined to one face of the substrate on which the resistor element is located. The substrate is ground at least at a portion of the opposite face thereof corresponding to a heat generating portion of the resistor element to make the thickness smaller than the other portion of the substrate. Thermal recording is effected by the ground portion of the substrate. The substrate may be made of a transparent or translucent inexpensive material such as quartz or glass. Various forms of supporting heat radiating plate to be incorporated in the thermal printers are also disclosed.

公开(公告)号：GB2194757B

公开(公告)日：1991-02-13

申请号：GB8721483

申请日：1987-09-11

Applicant: SONY CORP

Inventor： YAGINO MASANORI ,  TANIGUCHI MASATO ,  ITO YOSHITOMO ,  TAKANO TOSHIMITSU ,  ISHIKAWA WATARU ,  KIKUCHI SADATOSHI ,  ENDO TETSUO

IPC: B41J2/335 ,  B41J2/345

Abstract: A thermal head which is reduced in restriction in dimension of a substrate to allow reduction in size thereof and wherein the contacting characteristic of the substrate with a platen is improved to assure a high quality of printing. The thermal head has a heat generating resistor element and a driving circuit therefor both formed on a substrate, and a suppporting heat radiating member joined to one face of the substrate on which the resistor element is located. The substrate is ground at least at a portion of the opposite face thereof corresponding to a heat generating portion of the resistor element to make the thickness smaller than the other portion of the substrate. Thermal recording is effected by the ground portion of the substrate. The substrate may be made of a transparent or translucent inexpensive material such as quartz or glass. Various forms of supporting heat radiating plate to be incorporated in the thermal printers are also disclosed.

公开(公告)号：DE3574519D1

公开(公告)日：1990-01-04

申请号：DE3574519

申请日：1985-09-09

Applicant: SONY CORP

Inventor： HAYASHI KAZUHIKO ,  OCHIAI YOSHITAKA ,  HAYAKAWA MASATOSHI ,  MATSUDA HIDEKI ,  ISHIKAWA WATARU ,  IWASAKI YOU ,  ASO KOICHI

IPC: G11B5/147 ,  H01F1/18 ,  H01F10/08 ,  G11B5/127

公开(公告)号：CA1263435A

公开(公告)日：1989-11-28

申请号：CA490058

申请日：1985-09-05

Applicant: SONY CORP

Inventor： HAYASHI KAZUHIKO ,  OCHIAI YOSHITAKA ,  HAYAKAWA MASATOSHI ,  MATSUDA HIDEKI ,  ISHIKAWA WATARU ,  IWASAKI YOU ,  ASO KOICHI

IPC: G11B5/147 ,  H01F1/18 ,  H01F1/02 ,  G11B5/127

Abstract: A magnetic structure having improved permeability characteristics at very high frequencies and comprising a plurality of magnetic metal layers, together with electrically insulating layers which are interposed between successive magnetic metal layers to form a laminate therewith, and at least one conductive strip electrically connecting together at least two of the magnetic metal layers, the conductive strip being of lesser width than the surface on which it is located, and serving to reduce eddy current losses.

公开(公告)号：DE3730619A1

公开(公告)日：1988-03-17

申请号：DE3730619

申请日：1987-09-11

Applicant: SONY CORP

Inventor： YAGINO MASANORI ,  TANIGUCHI MASATO ,  ITO YOSHITOMO ,  TAKANO TOSHIMITSU ,  ISHIKAWA WATARU ,  KIKUCHI SADATOSHI ,  ENDO TETSUO

IPC: B41J2/335 ,  B41J2/345 ,  B41J3/20

Abstract: A thermal head which is reduced in restriction in dimension of a substrate to allow reduction in size thereof and wherein the contacting characteristic of the substrate with a platen is improved to assure a high quality of printing. The thermal head has a heat generating resistor element and a driving circuit therefor both formed on a substrate, and a suppporting heat radiating member joined to one face of the substrate on which the resistor element is located. The substrate is ground at least at a portion of the opposite face thereof corresponding to a heat generating portion of the resistor element to make the thickness smaller than the other portion of the substrate. Thermal recording is effected by the ground portion of the substrate. The substrate may be made of a transparent or translucent inexpensive material such as quartz or glass. Various forms of supporting heat radiating plate to be incorporated in the thermal printers are also disclosed.

公开(公告)号：DE69123487T2

公开(公告)日：1997-06-26

申请号：DE69123487

申请日：1991-05-28

Applicant: SONY CORP

Inventor： NARISAWA HIROAKI ,  SAITO NORIO ,  ISHIKAWA WATARU ,  SATO JIN ,  WATANABE TAKASHI

IPC: G11B5/245 ,  G11B5/31

Abstract: A thin film magnetic head has a lower magnetic layer (2) and an upper magnetic layer (3) formed over the lower magnetic layer (2) so that a small gap (FG) is formed between a magnetic gap section (Dp) of the lower magnetic layer (2) near a sliding surface to be brought into sliding contact with a magnetic recording medium and a magnetic gap section (3a) of the upper magnetic layer (3) extending in parallel to the magnetic gap section of the lower magnetic layer near the sliding surface. The the upper magnetic layer has a first sloping section (3b) extending from the magnetic gap section at an inclination theta 1 in a range defined by 2 DEG

公开(公告)号：DE69123487D1

公开(公告)日：1997-01-23

申请号：DE69123487

申请日：1991-05-28

Applicant: SONY CORP

Inventor： NARISAWA HIROAKI ,  SAITO NORIO ,  ISHIKAWA WATARU ,  SATO JIN ,  WATANABE TAKASHI

IPC: G11B5/245 ,  G11B5/31

Abstract: A thin film magnetic head has a lower magnetic layer (2) and an upper magnetic layer (3) formed over the lower magnetic layer (2) so that a small gap (FG) is formed between a magnetic gap section (Dp) of the lower magnetic layer (2) near a sliding surface to be brought into sliding contact with a magnetic recording medium and a magnetic gap section (3a) of the upper magnetic layer (3) extending in parallel to the magnetic gap section of the lower magnetic layer near the sliding surface. The the upper magnetic layer has a first sloping section (3b) extending from the magnetic gap section at an inclination theta 1 in a range defined by 2 DEG

公开(公告)号：DE3681056D1

公开(公告)日：1991-10-02

申请号：DE3681056

申请日：1986-04-10

Applicant: SONY CORP

Inventor： HAYASHI KAZUHIKO ,  HAYAKAWA MASATOSHI ,  OCHIAI YOSHITAKA ,  MATSUDA HIDEKI ,  ISHIKAWA WATARU ,  IWASAKI YOU ,  ASO KOUICHI

IPC: H01F10/14 ,  H01F10/16

Abstract: Disclosed is a soft magnetic thin film which has superior soft magnetic characteristics and high saturation magnetic flux density. The magnetic thin film is formed by physical vapour deposition process and composed of Fe, Ga, and Si with optional inclusion of Co, Ru, or Cr.

公开(公告)号：CA1278770C

公开(公告)日：1991-01-08

申请号：CA486890

申请日：1985-07-16

Applicant: SONY CORP

Inventor： HAYAKAWA MASATOSHI ,  ASO KOICHI ,  OCHIAI YOSHITAKA ,  MATSUDA HIDEKI ,  HAYASHI KAZUHIKO ,  ISHIKAWA WATARU ,  IWASAKI YOU

IPC: G11B5/147 ,  G11B5/31 ,  H01F10/00 ,  H01F10/14 ,  H01F10/32 ,  H01F10/08

Abstract: A magnetic alloy thin film consisting essentially of a first Fe-Al-Si or Fe-Ni alloy thin film of high permeability and a second Fe-Si alloy thin film directly formed on the first thin film and having high saturation magnetic flux density. The ratio in thickness of the first and second films is preferably in the range of from 1:0.1 to 2.