EP0169087A1 - Zuführanordnung für elektrostatisches Kopiergerät - Google Patents

Zuführanordnung für elektrostatisches Kopiergerät Download PDF

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Publication number
EP0169087A1
EP0169087A1 EP85400931A EP85400931A EP0169087A1 EP 0169087 A1 EP0169087 A1 EP 0169087A1 EP 85400931 A EP85400931 A EP 85400931A EP 85400931 A EP85400931 A EP 85400931A EP 0169087 A1 EP0169087 A1 EP 0169087A1
Authority
EP
European Patent Office
Prior art keywords
brush
photoreceptor
ink
assembly
cam
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Withdrawn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
EP85400931A
Other languages
English (en)
French (fr)
Inventor
Jean-Claude Berger
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.)
TETRAS SA
Original Assignee
TETRAS SA
MECILEC SA
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 TETRAS SA, MECILEC SA filed Critical TETRAS SA
Publication of EP0169087A1 publication Critical patent/EP0169087A1/de
Withdrawn legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G21/00—Arrangements not provided for by groups G03G13/00 - G03G19/00, e.g. cleaning, elimination of residual charge
    • G03G21/16—Mechanical means for facilitating the maintenance of the apparatus, e.g. modular arrangements
    • G03G21/1661—Mechanical means for facilitating the maintenance of the apparatus, e.g. modular arrangements means for handling parts of the apparatus in the apparatus
    • G03G21/1676—Mechanical means for facilitating the maintenance of the apparatus, e.g. modular arrangements means for handling parts of the apparatus in the apparatus for the developer unit
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G15/00—Apparatus for electrographic processes using a charge pattern
    • G03G15/06—Apparatus for electrographic processes using a charge pattern for developing
    • G03G15/08—Apparatus for electrographic processes using a charge pattern for developing using a solid developer, e.g. powder developer
    • G03G15/0896—Arrangements or disposition of the complete developer unit or parts thereof not provided for by groups G03G15/08 - G03G15/0894
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G21/00—Arrangements not provided for by groups G03G13/00 - G03G19/00, e.g. cleaning, elimination of residual charge
    • G03G21/16—Mechanical means for facilitating the maintenance of the apparatus, e.g. modular arrangements
    • G03G21/1642—Mechanical means for facilitating the maintenance of the apparatus, e.g. modular arrangements for connecting the different parts of the apparatus
    • G03G21/1647—Mechanical connection means
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G2221/00—Processes not provided for by group G03G2215/00, e.g. cleaning or residual charge elimination
    • G03G2221/16—Mechanical means for facilitating the maintenance of the apparatus, e.g. modular arrangements and complete machine concepts
    • G03G2221/1651—Mechanical means for facilitating the maintenance of the apparatus, e.g. modular arrangements and complete machine concepts for connecting the different parts
    • G03G2221/1654—Locks and means for positioning or alignment

Definitions

  • the subject of the present invention is a charging assembly for an electrostatic copier enabling charging with ink or "toner” or with any substance ensuring printing of the copy, change of magnetic cylinder or brush and photoreceptor.
  • a latent image is formed on a rigid or flexible photoreceptor, that is to say essentially a cylinder, sleeve or equivalent, and that this image is embodied by zones of electrification, corresponding to the drawing of the original, on which will be fixed the particles of what, for simplicity, we will call here the ink.
  • This deposit of particles will then be transferred to the copy medium.
  • a magnetic cylinder called a brush is used, the surface of which is magnetized and on which the particles from an ink tank are deposited. The deposition of particles along the lines of force of the field gives the cylinder thus covered a hairy appearance.
  • the brush generally rotating at a speed greater than that of movement of the photoreceptor brings the ink particles in the vicinity of the latter and the particles come to be fixed in the adequately electrified zones.
  • the brush therefore rotates close to the surface of the photoreceptor so that at all times a generator of the brush is in the immediate vicinity of a generator of the photoreceptor, the difference in circulation speed ensuring the transfer of an amount of particles on the photoreceptor.
  • the present invention does not cover the magnetic brush itself, nor the photoreceptor itself (which can be of any known type), but essentially the assembly device for the assembly ensuring the deposition of the ink on the areas wanted from the photoreceptor (whatever the types of "toner” inks or other powdery components ensuring the final impression, and whether they are in an encapsulated or other form), whatever the type of brush and its mounting and whatever the type of photoreceptor (rigid or flexible, cylinder, sleeve or other).
  • the overall structure is generally constituted by two side plates held parallel to each other by spacers. Between these plates, are mounted the cylinders and displacement elements of the photoreceptor, copies and possibly of the original as well as the sets of shooting and printing cold or hot, pressurized or pressurized one or more constituents, one or more photoreceptor turns per cycle ranging from shooting to printing the copy and erasing the latent image.
  • the present invention therefore essentially consists of a device the purpose of which is to allow refilling with ink, the change of photoreceptor and brush. It is obvious that these various operations require initial precautions: the brush and / or the photoreceptor cannot be changed without initially separating them from one another, otherwise there would be a risk of deterioration and scattering of ink throughout the copier. It is also obvious that one must be able to refill with ink without risking false maneuvers, that is to say by freeing access to the ink tank without fear of deterioration of the constituent elements or this scattering of ink requiring delicate and unpleasant cleaning.
  • Another object of the invention is to be able to change the reservoir-brush assembly, thus making it possible to change the ink and in particular the printing color.
  • the present invention relates to a charging device for an electrostatic copier, comprising a member separating (or approaching in the working position) brush and photoreceptor in order to release the extraction of the photoreceptor (or block it in the working position) and to release the brush. and ink, toner or equivalent reservoir (or return them to the working position).
  • the present invention essentially relates to a control mechanism making it possible, from a first so-called working position, to spread in a second brush and photoreceptor position and in a third position to charge with ink or even to change the ink tank and brush assembly.
  • the device makes it possible to then carry out the operations for returning to the working position.
  • the reference 1 represents the photoreceptor cylinder or in the case of a flexible sleeve one of the cylinders over which the photoreceptor sleeve passes.
  • the photoreceptor surface passes in 2 along an inking generator where the ink of the magnetic cylinder or brush 3 comes in close proximity to the photoreceptor surface.
  • the cylinder 1 is rotatably mounted on the overall frame of the machine.
  • the brush 3 is rotatably mounted on an assembly 4 known as an inking assembly which essentially comprises the reservoir 5, the brush 3 and the leveling blade 6 known as the "doctor" blade which ensures the equalization of the ink on the surface of the brush .
  • This blade 6 is mounted by any conventional adequate means, generally screws 8 and springs 9 on the wall of the reservoir 5.
  • the clearance between doctor blade 6 and brush 3 must correspond to the desired thickness of ink deposited on the brush 3.
  • One or more deflectors 10 ensure the good distribution of the ink contained in the reservoir 5 on the surface of the brush 3.
  • the wall of the reservoir 5 extends at 11 below the brush 3 essentially to avoid ink dispersions in the machine.
  • the reservoir 5 is closed by a filling cover 12, for example with a hinge.
  • the inking unit 4 is mounted on an axis 13 integral with the frame of the machine so that it can be released by lifting.
  • the assembly 4 is biased towards the cylinder 1 or towards a stop to ensure the proximity between brush 3 and photoreceptor.
  • This stress is provided by a spring 14 stretched between a fixed point 15 of the frame of the machine not shown to simplify the figure and a point 16 of a lever 17 articulated around an axis 18 integral with the frame of the machine, a caster 19 of the lever 17 comes to bear on a surface 20 of the assembly 4, so that the biasing of the spring is exerted on the surface 20 tending to cause the assembly 4 to tilt to the right in the figure.
  • a part 22 rotating under the action for example of a crank handle 23.
  • This part 22 has an arm 23 whose end comes to block an element of the photoreceptor assembly, for example the axis of cylinder 1. This prevents both removing cylinder 1 from the brush 3 and extracting by axial sliding the cylinder 1 and the rest of the photoreceptor assembly, generally mounted in a drawer in the prior art.
  • the part 22 also carries a cam 24 which, by turning, pushes an element of the inking assembly 4, for example the axis 24 of the brush 3, against the stress of the spring 14. It is therefore conceivable that by turning the crank 23, the cylinder 1 is released and the ink assembly 4 is removed from the photoreceptor drawer (not shown in the figures for simplification) and the brush 3 is removed from the photoreceptor.
  • the roller 19, during this gap will go up from A to B. As long as it remains between a and B, it urges the ink-set towards the cam 24 and therefore towards the photoreceptor insofar as the position of the cam 24 authorizes it.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Cleaning In Electrography (AREA)
  • Wet Developing In Electrophotography (AREA)
EP85400931A 1984-05-16 1985-05-13 Zuführanordnung für elektrostatisches Kopiergerät Withdrawn EP0169087A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8407567 1984-05-16
FR8407567A FR2564612B1 (fr) 1984-05-16 1984-05-16 Ensemble de chargement pour copieur electrostatique

Publications (1)

Publication Number Publication Date
EP0169087A1 true EP0169087A1 (de) 1986-01-22

Family

ID=9304030

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85400931A Withdrawn EP0169087A1 (de) 1984-05-16 1985-05-13 Zuführanordnung für elektrostatisches Kopiergerät

Country Status (2)

Country Link
EP (1) EP0169087A1 (de)
FR (1) FR2564612B1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2603714A1 (fr) * 1986-09-05 1988-03-11 Ricoh Kk Appareil electrostatique d'enregistrement pour copieur, telecopieur et imprimante

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2072902A5 (de) * 1969-12-10 1971-09-24 Agfa Gevaert Ag
GB1317289A (en) * 1969-03-21 1973-05-16 Canon Kk Copying machine
FR2316640A1 (fr) * 1975-07-04 1977-01-28 Agfa Gevaert Ag Appareil de reprographie electrophotographique
FR2396340A1 (fr) * 1977-06-29 1979-01-26 Agfa Gevaert Ag Copieur electrostatique

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57191652A (en) * 1981-05-22 1982-11-25 Fuji Xerox Co Ltd Rocking mechanism for processing unit of copying machine

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1317289A (en) * 1969-03-21 1973-05-16 Canon Kk Copying machine
FR2072902A5 (de) * 1969-12-10 1971-09-24 Agfa Gevaert Ag
FR2316640A1 (fr) * 1975-07-04 1977-01-28 Agfa Gevaert Ag Appareil de reprographie electrophotographique
FR2396340A1 (fr) * 1977-06-29 1979-01-26 Agfa Gevaert Ag Copieur electrostatique

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
PATENTS ABSTRACTS OF JAPAN, vol. 7, no. 38 (P-176) [1183], 16 février 1983, page 154 P 176; & JP - A - 57 191 652 (FUJI XEROX K.K.) 25-11-1982 *
PATENTS ABSTRACTS OF JAPAN, vol. 7, no. 42 (P-177) [1187], 19 février 1983; & JP - A - 57 192 985 (CANON K.K.) 27-11-1982 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2603714A1 (fr) * 1986-09-05 1988-03-11 Ricoh Kk Appareil electrostatique d'enregistrement pour copieur, telecopieur et imprimante

Also Published As

Publication number Publication date
FR2564612B1 (fr) 1987-03-20
FR2564612A1 (fr) 1985-11-22

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Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Designated state(s): AT BE CH DE GB IT LI LU NL SE

17P Request for examination filed

Effective date: 19860621

17Q First examination report despatched

Effective date: 19880105

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION HAS BEEN WITHDRAWN

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: TETRAS S.A.

17Q First examination report despatched

Effective date: 19880531

18W Application withdrawn

Withdrawal date: 19880604

RIN1 Information on inventor provided before grant (corrected)

Inventor name: BERGER, JEAN-CLAUDE