EP1198044A1 - Dispositif pour tendre un fil Corona - Google Patents

Dispositif pour tendre un fil Corona Download PDF

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Publication number
EP1198044A1
EP1198044A1 EP01121797A EP01121797A EP1198044A1 EP 1198044 A1 EP1198044 A1 EP 1198044A1 EP 01121797 A EP01121797 A EP 01121797A EP 01121797 A EP01121797 A EP 01121797A EP 1198044 A1 EP1198044 A1 EP 1198044A1
Authority
EP
European Patent Office
Prior art keywords
wire
sliding block
machine
spring
leg
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.)
Granted
Application number
EP01121797A
Other languages
German (de)
English (en)
Other versions
EP1198044B1 (fr
Inventor
Daniel R. Palmer
Warren G. Branch Iii
Gary B. Bertram
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.)
Eastman Kodak Co
Original Assignee
Heidelberger Druckmaschinen AG
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 Heidelberger Druckmaschinen AG filed Critical Heidelberger Druckmaschinen AG
Publication of EP1198044A1 publication Critical patent/EP1198044A1/fr
Application granted granted Critical
Publication of EP1198044B1 publication Critical patent/EP1198044B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01T—SPARK GAPS; OVERVOLTAGE ARRESTERS USING SPARK GAPS; SPARKING PLUGS; CORONA DEVICES; GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES
    • H01T19/00—Devices providing for corona discharge

Definitions

  • the present invention relates to the field of electrophotographic printers and Copier.
  • the invention relates to corona charging devices used for Serve to charge the surface of a photoconductor element.
  • a corona charger usually contains at least one corona wire a small diameter (e.g., about 0.076 mm [0.003 inches]). It is important that this Wires are correctly tensioned. Too much tension can cause the wire to tear As a result, too little tension leads to vibration of the wire and thus to it can lead to an uneven charging of the photoconductor element. On top of that Corona wires have a limited life and need to be replaced.
  • spring wires are applied to corona wires to select the appropriate one To achieve tension.
  • One possible way to do this is to use the Bend the ends of the wires into eyelets, attach one end of the wires and attach the eyelets to the hook the other end to a hook formed on a tension spring. Subsequently A variety of wires can be tensioned by using these springs on one Clamping block can be attached, the rotated and after reaching the desired tension is locked.
  • a disadvantage of this method is that it is difficult to attach the eyelets and the springs during rotation and locking of the clamping block together Keep engaging.
  • This method also includes the spring and the Corona wire in direct contact with each other.
  • the object of the invention is a simple and reliable To create wire tensioning device for tensioning corona wires through which a individual replacement of the individual wires is made possible.
  • a tensioning device for tensioning a wire with a first End and a second end, wherein the first end is attached to the machine and that second end has a fastener, includes a slide block and a spring.
  • the sliding block is parallel to the wire in the area of the second end of the wire slidably attached to the machine.
  • the slide block has a gap which is wider than the wire, but narrower than the fastener, so the second End of the wire can be inserted into the gap when the slide block on the Machine is attached. This ensures that the fastener against the gap is forced as the slide block is pulled away from the wire but cannot happen.
  • the gap can be aligned with the wire in such a way that tensioned wire no lateral force acts on the fastener.
  • the present invention discloses a mechanism for loading the wire 6 with a spring force without the spring 40 being attached to the wire 6 for this purpose. Thereby there is a risk of sparking from the spring 40 to the wire 6 and others Machine components minimized. This improvement further minimizes the side Load the wire 6 by the on a fastener 3, for. B. an eyelet Force is distributed around the fastener.
  • FIG. 1 includes a wire tensioning mechanism 2 for tensioning a wire 6 in a machine 4, a sliding block 30 and a spring 40.
  • the wire has a first end (not shown) and a second end 7 (see Fig. 2-3).
  • the wire 6 comprises at its second end 7 a fastening element 3 and is attached to the machine 4 at the first end.
  • the sliding block 30 is displaceable parallel to the wire at the second end 7 of the wire Machine 4 attached.
  • the sliding block 30 has a gap 35 which is wider than that Wire 6, but is narrower than the fastener 3. In this way the second End 7 of the wire 6 are inserted into the gap 30 when the sliding block 30 on the Machine 4 is attached so that the fastener 3 when the Sliding blocks 30 with a tensile force directed away from the wire 6 against the gap 35 is pushed, but this cannot happen.
  • the gap 35 is with the wire 6 in the Aligned so that when the wire 6 is tensioned, no lateral forces on it Fastener 3 act. In a preferred embodiment, this is Fastening element 3 is designed as an eyelet, which at the second end 7 of the wire 6 is shaped.
  • the machine 4 Have notches 8 in which the wire 6 must be positioned.
  • it is Sliding block 30 preferably slightly offset with respect to the notch 8 around the wire 6 align against the notch 8 in such a way that the wire 6 does not move.
  • the spring is arranged between the machine 4 and the sliding block 30 in such a way that the spring 40 exerts a force on the slide block 30 which is directed against the force, which the tensioned wire 6 exerts on the sliding block 30.
  • the force of the spring 40 can cause a displacement of the sliding block 30, and the spring 40 is selected so that the force exerted on the sliding block 30 brings about the desired tension of the wire 6. In this way, the spring 40 causes the slide block 30 to pull on the wire 6 exercises.
  • the Wire tensioning mechanism 2 also a bracket 10 attached to the machine 4.
  • the sliding block 30 is slidably attached to the holder 10, preferably by means of a slide pin 20 attached to the holder 10.
  • the slide pin 20 can also be attached directly to the machine 4, the sliding block 30 over the Slide pin 20 is slidably attached to the machine. (This arrangement is not shown.)
  • the spring 40 between the machine 4 and the sliding block 30 or between the bracket 10 and the sliding block 30 his. (The latter arrangement is not shown.) In the preferred embodiment the spring 40 is arranged between the slide block 30 and the holder 10.
  • the sliding block 30 is V-shaped formed and comprises a first leg 34 and a second leg 32 (am most clearly shown in Fig. 3).
  • the first sliding block leg 34 is slidable on the Machine 4 attached.
  • the second leg 32 is on the same side of the first Leg 34 as the wire 6 so that the second leg 32 is at an angle to that Wire 6 is there.
  • the V-shaped sliding block is on one side (on the first leg 34), while the gap 35 on the other side of the V-shaped sliding block (in second leg 32) is located.
  • the portion of the slide block 30 containing the gap 35 is at an angle to the wire 6 and thus prevents the Wire 6 slides out of the gap 35.
  • the spring 40 is a compression spring educated.
  • the use of a compression spring is preferred; the However, the device also works with a tension spring.
  • a single continuous wire 6 can be used, so ordered that several segments arise.
  • This continuous wire 6 has one Stationarily arranged first end 5 and a second end 7, on which an eyelet 3 is formed.
  • the necessary bends in the wire are achieved in that the wire 6 um Guide elements 50 is guided, the second end 7 in the manner of the last Guide element 51 is guided so that it is at a 90 ° angle to the rest of the wire 6 forms.
  • the second end 7 is then by means of one of the clamping devices described attached.
  • the guide elements can be designed in different ways: pins, pins, Pulleys and notches are conceivable. However, the present invention is not based on limited these specific examples; any device can be used suitable for bending the wire into the different segments.

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Plasma & Fusion (AREA)
  • Electrostatic Charge, Transfer And Separation In Electrography (AREA)
  • Wire Bonding (AREA)
EP01121797A 2000-10-14 2001-09-21 Dispositif pour tendre un fil Corona Expired - Lifetime EP1198044B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US688002 1996-07-29
US09/688,002 US6900436B1 (en) 2000-10-14 2000-10-14 Corona wire tensioning mechanism

Publications (2)

Publication Number Publication Date
EP1198044A1 true EP1198044A1 (fr) 2002-04-17
EP1198044B1 EP1198044B1 (fr) 2005-09-07

Family

ID=24762712

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01121797A Expired - Lifetime EP1198044B1 (fr) 2000-10-14 2001-09-21 Dispositif pour tendre un fil Corona

Country Status (6)

Country Link
US (1) US6900436B1 (fr)
EP (1) EP1198044B1 (fr)
JP (1) JP2002196565A (fr)
AT (1) ATE304233T1 (fr)
CA (1) CA2358630C (fr)
DE (2) DE50107346D1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7208732B2 (en) * 2005-09-27 2007-04-24 Xerox Corp Structure for attaching wire assembly to a dicor housing
US7432504B2 (en) * 2005-09-27 2008-10-07 Xerox Corporation Dicorotron wire assembly removal and storage tool

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4112298A (en) * 1977-03-31 1978-09-05 Xerox Corporation Corona wire mounting means
US4453293A (en) * 1980-10-22 1984-06-12 Agfa-Gevaert Ag Clamping arrangement for corona discharge wire

Family Cites Families (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3620615A (en) 1968-12-31 1971-11-16 Xerox Corp Sheet stripping apparatus
GB1454410A (en) * 1973-12-21 1976-11-03 Xerox Corp Corona generating devices
US4104521A (en) 1976-04-09 1978-08-01 Amp Incorporated Corotron connector
US4110811A (en) 1977-05-31 1978-08-29 Xerox Corporation Support structure for a corona generating device
US4320957A (en) 1980-05-30 1982-03-23 International Business Machines Corp. Corona wire adjuster
US4442356A (en) 1981-08-21 1984-04-10 International Business Machines Corporation Corona wire assembly and method
CA1190593A (fr) 1983-02-01 1985-07-16 Paul E. Plasschaert Dispositif a effet de couronne
JPS63234295A (ja) * 1987-03-23 1988-09-29 ヤマハ株式会社 弦楽器の弦張力調整装置
JPH0610371Y2 (ja) 1987-09-16 1994-03-16 株式会社リコー コロナ放電装置
US4764675A (en) 1987-10-22 1988-08-16 Xerox Corporation Self-tensioning coronode structure
US5339137A (en) 1992-09-17 1994-08-16 Mita Industrial Co., Ltd. Image forming apparatus
US5324941A (en) 1993-01-05 1994-06-28 Xerox Corporation Tension support mounting for a corona generating device
US5449906A (en) 1994-01-03 1995-09-12 Xerox Corporation Corona generating electrode replacement tool
US5424540A (en) 1994-08-19 1995-06-13 Eastman Kodak Company Corona charger wire tensioning mechanism
JPH08101589A (ja) 1994-09-30 1996-04-16 Ricoh Co Ltd 画像形成装置
US5539205A (en) 1995-01-30 1996-07-23 Xerox Corporation Corona generating device and method of fabricating
US5627376A (en) 1995-09-08 1997-05-06 Samsung Electronics Co., Ltd. Wire corona charging apparatus
US5672871A (en) 1996-02-29 1997-09-30 Eastman Kodak Company Corona wire handling device

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4112298A (en) * 1977-03-31 1978-09-05 Xerox Corporation Corona wire mounting means
US4453293A (en) * 1980-10-22 1984-06-12 Agfa-Gevaert Ag Clamping arrangement for corona discharge wire

Also Published As

Publication number Publication date
ATE304233T1 (de) 2005-09-15
EP1198044B1 (fr) 2005-09-07
DE50107346D1 (de) 2005-10-13
CA2358630A1 (fr) 2002-04-14
JP2002196565A (ja) 2002-07-12
CA2358630C (fr) 2006-01-24
DE10146411A1 (de) 2002-04-18
US6900436B1 (en) 2005-05-31

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