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1. 发明专利

DE69505873T2 未知
公开(公告)号：DE69505873T2
公开(公告)日：1999-04-08
申请号：DE69505873
申请日：1995-04-03
申请人： OKI ELECTRIC IND CO LTD
发明人： OOISHI NOBORU , ANDOU HIROKAZU , SUEMUNE TOSHIRO , KISHIMOTO MITSURU
IPC分类号： B41J2/235 , B41J2/28 , B41J29/00
摘要： An impact printer has a print head in which demagnetizing coils are embedded in a filling compound. A resistor or Zener diode is connected in series between the print head and the printer's frame ground, to prevent current flow through the filling compound from causing corrosion of the demagnetizing coils, while permitting discharge of static charge from the print head to ground.

2. 发明专利

DE69205484D1 未知
公开(公告)号：DE69205484D1
公开(公告)日：1995-11-23
申请号：DE69205484
申请日：1992-04-15
申请人： OKI ELECTRIC IND CO LTD
发明人： ANDOU HIROKAZU , ISHIMIZU HIDEAKI , KISHIMOTO MITSURU , ISHIKAWA MASAYUKI
IPC分类号： B41J2/28 , H01F7/06

3. 发明专利

GB2292545A A method of adjusting the head gap of a wire dot impact printer 未知
公开(公告)号：GB2292545A
公开(公告)日：1996-02-28
申请号：GB9521030
申请日：1993-07-14
申请人： OKI ELECTRIC IND CO LTD
发明人： SAKAINO HIROSHI , ISHIMIZU HIDEAKI , KISHIMOTO MITSURU , OOISHI NOBORU , ISHIKAWA MASAYUKI , KOMORI CHIHIRO , AKUTSU NAOJI , TANUMA JIRO , KASAI TADASHI
IPC分类号： B41J25/308
摘要： The method comprises determining the thickness of a printing medium (p) on the basis of the time taken for a printing wire (30, Fig. 4) to return from a printing position to its rest position during a test printing. A head gap (g) is optimised by monitoring the speed of a print wire armature (32, Fig. 4) during printing onto a printing medium (p) and determining both the time taken for the print wire (30, Fig. 4) to reach a printing position from a rest position and the time taken for a print wire (30, Fig. 4) to return from the printing position to a rest position.

4. 发明专利

DE69106641D1 未知
公开(公告)号：DE69106641D1
公开(公告)日：1995-02-23
申请号：DE69106641
申请日：1991-09-16
申请人： OKI ELECTRIC IND CO LTD
发明人： ANDOU HIROKAZU , KISHIMOTO MITSURU , TATSUKAMI MASAHIRO
IPC分类号： B41J2/28 , B41J2/24 , H01F41/02

5. 发明专利

GB2269137B Method of adjusting a head gap for a wire dot impact printer 未知
公开(公告)号：GB2269137B
公开(公告)日：1996-07-24
申请号：GB9314630
申请日：1993-07-14
申请人： OKI ELECTRIC IND CO LTD
发明人： SAKAINO HIROSHI , ISHIMIZU HIDEAKI , KISHIMOTO MITSURU , OOISHI NOBORU , ISHIKAWA MASAYUKI , KOMORI CHIHIRO , AKUTSU NAOJI , TANUMA JIRO , KASAI TADASHI
IPC分类号： B41J2/30 , B41J11/20 , B41J25/308 , B41J29/46
摘要： According to a method of adjusting a head gap, a wire dot head is set to a predetermined position of a reference head gap; a printing pattern for detecting printing time is printed by a plurality of pins; reference printing times of respective pins are detected. Next, a test printing is performed with test printing dots previously selected from printing data, and printing time of the test printing is detected. Then, the thickness of the printing media is calculated based on the reference printing time and the printing time of the test printing. At that time, a rule of thumb in which the difference of the printing time corresponds to the difference of the head gap, is used. Then, a shift amount of the wire dot head is calculated for setting the head gap to an optimum value according to the thickness of the printing media, and gap shifting mechanism shifts the wire dot head by the shift amount. This leads to highly accurate detection of the head gap and improves printing quality thereof.

6. 发明专利

DE69011797D1 未知
公开(公告)号：DE69011797D1
公开(公告)日：1994-09-29
申请号：DE69011797
申请日：1990-10-04
申请人： OKI ELECTRIC IND CO LTD
发明人： ANDOU HIROKAZU , KISHIMOTO MITSURU , OOISHI NOBORU , UMEZAWA YOICHI
IPC分类号： B41J29/377 , B41J2/28
摘要： In a wire-dot print head having an armature (10) with a tip to which a print wire (11) is secured, a core (16) provided in confrontation with the armature, plate spring (7) which is supported in a canti lever fashion and to which the armature is fixed, a permanent magnet assembly (4, 18) generating a magnetic flux to cause the armature to be attracted toward the core overcoming the resilient force of the plate spring, and a coil (13) wound on the core to generate a magnetic flux upon energization to cancel the magnetic flux from the permanent magnet assembly thereby to release the armature, the permanent magnet assembly comprises a first permanent magnet (4) of samarium-cobalt type, and a second permanent magnet (18) of neodyminum-iron-boron type or lanthanoid-iron-boron type.

7. 发明专利

DE69508881T2 未知
公开(公告)号：DE69508881T2
公开(公告)日：1999-08-12
申请号：DE69508881
申请日：1995-10-13
申请人： OKI DATA KK , OKI ELECTRIC IND CO LTD
发明人： ANDO HIROKAZU , KISHIMOTO MITSURU , OOISHI NOBORU , SHIMOSUGI MASAHIKO , SHIBATA ISAO
IPC分类号： B41J2/045 , B41J2/055 , B41J2/14 , B41J2/16
摘要： An ink-jet head comprising a plurality of sidewalls each imparting a pressure pulse to an ink pressurizing cell by means of shear mode deformation, and a front wall having a plurality of orifices. The ink in the ink pressurizing cells is ejected from the orifices. Each sidewall comprises a first wall section, a first electrode disposed thereon, an anisotropic adhesive disposed thereon, a second electrode disposed thereon, and a second wall section disposed thereon. Width of the first electrode is narrower than width of the first wall section, and the upper surface of the first wall section has first side areas which are not covered by the first electrode. Width of the second electrode is narrower than width of the second wall section, and the lower surface of the second wall section has second side areas which are not covered by the second electrode. The anisotropic adhesive has conductivity only in a direction perpendicular to the upper surface of the first wall section and the lower surface of the second wall section, and the anisotropic adhesive covers the first and second electrodes so that the first and second electrodes are not exposed to the ink in the ink pressurizing cells.

8. 发明专利

DE69508881D1 未知
公开(公告)号：DE69508881D1
公开(公告)日：1999-05-12
申请号：DE69508881
申请日：1995-10-13
申请人： OKI DATA KK , OKI ELECTRIC IND CO LTD
发明人： ANDO HIROKAZU , KISHIMOTO MITSURU , OOISHI NOBORU , SHIMOSUGI MASAHIKO , SHIBATA ISAO
IPC分类号： B41J2/045 , B41J2/055 , B41J2/14 , B41J2/16
摘要： An ink-jet head comprising a plurality of sidewalls each imparting a pressure pulse to an ink pressurizing cell by means of shear mode deformation, and a front wall having a plurality of orifices. The ink in the ink pressurizing cells is ejected from the orifices. Each sidewall comprises a first wall section, a first electrode disposed thereon, an anisotropic adhesive disposed thereon, a second electrode disposed thereon, and a second wall section disposed thereon. Width of the first electrode is narrower than width of the first wall section, and the upper surface of the first wall section has first side areas which are not covered by the first electrode. Width of the second electrode is narrower than width of the second wall section, and the lower surface of the second wall section has second side areas which are not covered by the second electrode. The anisotropic adhesive has conductivity only in a direction perpendicular to the upper surface of the first wall section and the lower surface of the second wall section, and the anisotropic adhesive covers the first and second electrodes so that the first and second electrodes are not exposed to the ink in the ink pressurizing cells.

9. 发明专利

GB2292545B Method of adjusting the head gap of a wire dot impact printer 未知
公开(公告)号：GB2292545B
公开(公告)日：1996-07-24
申请号：GB9521030
申请日：1993-07-14
申请人： OKI ELECTRIC IND CO LTD
发明人： SAKAINO HIROSHI , ISHIMIZU HIDEAKI , KISHIMOTO MITSURU , OOISHI NOBORU , ISHIKAWA MASAYUKI , KOMORI CHIHIRO , AKUTSU NAOJI , TANUMA JIRO , KASAI TADASHI
IPC分类号： B41J25/308

10. 发明专利

DE69205484T2 未知
公开(公告)号：DE69205484T2
公开(公告)日：1996-06-27
申请号：DE69205484
申请日：1992-04-15
申请人： OKI ELECTRIC IND CO LTD
发明人： ANDOU HIROKAZU , ISHIMIZU HIDEAKI , KISHIMOTO MITSURU , ISHIKAWA MASAYUKI
IPC分类号： B41J2/28 , H01F7/06

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