EP0645255A2 - Méthode et appareil pour le montage d'un élément d'impression thermique - Google Patents

Méthode et appareil pour le montage d'un élément d'impression thermique Download PDF

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Publication number
EP0645255A2
EP0645255A2 EP94113776A EP94113776A EP0645255A2 EP 0645255 A2 EP0645255 A2 EP 0645255A2 EP 94113776 A EP94113776 A EP 94113776A EP 94113776 A EP94113776 A EP 94113776A EP 0645255 A2 EP0645255 A2 EP 0645255A2
Authority
EP
European Patent Office
Prior art keywords
thermal
pressure roller
print head
holding arm
counter
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP94113776A
Other languages
German (de)
English (en)
Other versions
EP0645255A3 (fr
Inventor
Ulf Koch
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Meto International GmbH
Original Assignee
Esselte Meto International GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Esselte Meto International GmbH filed Critical Esselte Meto International GmbH
Publication of EP0645255A2 publication Critical patent/EP0645255A2/fr
Publication of EP0645255A3 publication Critical patent/EP0645255A3/fr
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J25/00—Actions or mechanisms not otherwise provided for
    • B41J25/304—Bodily-movable mechanisms for print heads or carriages movable towards or from paper surface
    • B41J25/316—Bodily-movable mechanisms for print heads or carriages movable towards or from paper surface with tilting motion mechanisms relative to paper surface

Definitions

  • the invention relates to a method and a device for assembling a thermal printing module according to the preambles of claims 1 and 3.
  • thermocouples are particularly well suited, which generate a voltage corresponding to the temperature difference between the measuring point and the connections of a voltmeter.
  • the voltmeter shows the voltage value corresponding to this temperature difference directly.
  • thermocouple materials are nickel-chrome-nickel with a thermal voltage of 41.3 ⁇ V / K, iron constantan with 54 ⁇ V / K and copper constantan with 52 ⁇ V / K.
  • the thermal printing module 1 shown in FIG. 1 consists of a cold arm 2, on one end of which bearing lugs 3 with bores 4 are formed on both sides and at the other end a thermal printing head 5 is arranged.
  • the thermal print head 5 has threaded bores 6, via which the thermal print head 5 is fastened to the holding arm 2 by means of screws 7, into which holes 8 are incorporated for this purpose, the diameter of which is larger than the diameter of the screw bolts 7 '.
  • the screws 7, 7 ' are designed as hexagon socket screws, which can be installed particularly easily and without problems.
  • the thermal print head 5 carries a straight row of heating elements 10 which can be individually electrically controlled via a connecting plug 9.
  • FIG. 1 schematically shows a temperature sensor 11 with a temperature display 12 connected to it, which is arranged in the immediate vicinity of the heating elements 10 and is designed as a thermocouple, in which two wires 13 and 14 weld together at their one end 11 and the other ends thereof are connected to a measuring device 12, which in the present exemplary embodiment is designed as a voltmeter.
  • the two wires 13 and 14 can be made of nickel and chromium-nickel, of iron and constantan, of copper and constantan or of other elements that interact with each other combined generate a sufficiently large thermal voltage.
  • FIG. 1 In dash-dot lines, it is drawn in FIG. 1 which position a counter-pressure roller 15 located in a thermal printer assumes with respect to the heating elements 10 of the thermal print head 5. From this it can be seen that the position of the temperature sensors 11 in the mounting device according to the invention corresponds to the line along which the heating elements 10 come into contact with the outer surface of the counter-pressure roller 15 located in the thermal printer.
  • the device shows the front view of a device for mounting the thermal printing module.
  • the device consists of a base part 16 on which two arms 17, 18 are laterally formed for mounting an axis 19.
  • the base part 16 is used to hold three temperature displays 12a-c designed as voltmeters, to which the wires 13a-c and 14 ac of the thermocouples used for temperature measurement are connected.
  • the welded connections of the wires 13a-c, 14a-c form the temperature sensors 11a-c, which are raised on the surface of the base part 16.
  • the surfaces of the temperature sensors 11a-c lie on a straight line which has exactly the same position with respect to the axis 19 as the line of contact of the heating elements with the counterpressure roller in a thermal printer the bearing axis in the thermal printer for the thermal printing module 1.
  • the holding arm 2 is pivotally arranged via the axis 19 and the bearing eyes 3a, 3b, to which the thermal print head 5 is fastened by means of the screws 7a, 7b.
  • the thermal print head 5 is fastened by means of the screws 7a, 7b.
  • the heating elements 10 are shown dotted on the underside of the thermal print head 5.
  • the thermal print head 5 is adjusted with energized and thus heated heating elements 10 as already explained above by loosening the screws 7a, 7b and pushing the thermal print head 5 back and forth until the temperature displays 12a-c show identical values. If this position of the thermal print head 5 is reached, the screws 7a, 7b tightened again, and the holding arm 2 is removed together with the thermal print head 5 from the mounting device 16, 17, 18 and installed in a thermal printer.

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  • Electronic Switches (AREA)
  • Common Mechanisms (AREA)
EP94113776A 1993-09-24 1994-09-02 Méthode et appareil pour le montage d'un élément d'impression thermique. Withdrawn EP0645255A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19934332626 DE4332626A1 (de) 1993-09-24 1993-09-24 Verfahren und Vorrichtung zur Montage eines Thermodruckmoduls
DE4332626 1993-09-24

Publications (2)

Publication Number Publication Date
EP0645255A2 true EP0645255A2 (fr) 1995-03-29
EP0645255A3 EP0645255A3 (fr) 1995-12-13

Family

ID=6498576

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94113776A Withdrawn EP0645255A3 (fr) 1993-09-24 1994-09-02 Méthode et appareil pour le montage d'un élément d'impression thermique.

Country Status (3)

Country Link
EP (1) EP0645255A3 (fr)
JP (1) JPH07227978A (fr)
DE (1) DE4332626A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5886726A (en) * 1997-02-10 1999-03-23 Datacard Corporation Thermal print head module and method for using
JP2002086774A (ja) * 2000-09-19 2002-03-26 Sato Corp サーマルヘッドの当接圧異常検査方法および検査装置

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3038867C2 (de) * 1980-10-15 1983-12-01 F & O Electronic Systems GmbH & Co, 6901 Neckarsteinach Ausdruck- und Justiervorrichtung für den Druckkopf eines Thermodruckers
JPS589756U (ja) * 1981-07-15 1983-01-21 株式会社サト− サ−マルヘツド支持機構
JPS5976265A (ja) * 1982-10-26 1984-05-01 Sharp Corp インクジエツト記録装置
DE3909254A1 (de) * 1989-03-21 1990-09-27 Esselte Meto Int Gmbh Thermodruckkopf

Also Published As

Publication number Publication date
EP0645255A3 (fr) 1995-12-13
DE4332626A1 (de) 1995-03-30
JPH07227978A (ja) 1995-08-29

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