EP0665965A1 - Dispositif de dosage d'agent separateur pour un rouleau fixateur d'une imprimante ou d'une photocopieuse. - Google Patents

Dispositif de dosage d'agent separateur pour un rouleau fixateur d'une imprimante ou d'une photocopieuse.

Info

Publication number
EP0665965A1
EP0665965A1 EP93922955A EP93922955A EP0665965A1 EP 0665965 A1 EP0665965 A1 EP 0665965A1 EP 93922955 A EP93922955 A EP 93922955A EP 93922955 A EP93922955 A EP 93922955A EP 0665965 A1 EP0665965 A1 EP 0665965A1
Authority
EP
European Patent Office
Prior art keywords
release agent
tube
agent metering
flange
metering device
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
EP93922955A
Other languages
German (de)
English (en)
Other versions
EP0665965B1 (fr
Inventor
Otmar Irro
Helmut Naeser
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.)
Canon Production Printing Germany GmbH and Co KG
Original Assignee
Wincor Nixdorf 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
Priority claimed from DE19924235671 external-priority patent/DE4235671C2/de
Priority claimed from DE19934306049 external-priority patent/DE4306049C1/de
Application filed by Wincor Nixdorf International GmbH filed Critical Wincor Nixdorf International GmbH
Publication of EP0665965A1 publication Critical patent/EP0665965A1/fr
Application granted granted Critical
Publication of EP0665965B1 publication Critical patent/EP0665965B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • 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
    • G03G15/20—Apparatus for electrographic processes using a charge pattern for fixing, e.g. by using heat
    • G03G15/2003—Apparatus for electrographic processes using a charge pattern for fixing, e.g. by using heat using heat
    • G03G15/2014—Apparatus for electrographic processes using a charge pattern for fixing, e.g. by using heat using heat using contact heat
    • G03G15/2017—Structural details of the fixing unit in general, e.g. cooling means, heat shielding means
    • G03G15/2025—Structural details of the fixing unit in general, e.g. cooling means, heat shielding means with special means for lubricating and/or cleaning the fixing unit, e.g. applying offset preventing fluid

Definitions

  • the invention relates to a release agent metering device for supplying release agent to the surface of a fixing roller of a printing or copying machine which works according to the transfer printing principle.
  • a generic release agent metering device is known from US-A3 964 431.
  • the release agent metering device contains a release agent roller which rolls tangentially on the fixing roller and thereby applies liquid release agent to the surface of the fixing roller.
  • Release agent donor rolls are usually completely replaced if their surface is dirty or worn.
  • high-quality, not yet worn parts such as disposed of heat-resistant bearings that are part of the release agent roller.
  • the new part to be used is therefore relatively expensive.
  • the present invention is therefore based on the object of providing the release agent metering device for supplying release agents.
  • the carrier tube is rotatably mounted on a release agent metering tube with axially arranged release agent metering openings.
  • a release agent metering tube with axially arranged release agent metering openings.
  • at least partially overlapping through openings for the release agent in the support tube and through openings for the release agent in the application sleeve are provided.
  • the release agent is distributed evenly over the entire length of the release agent donor roll.
  • the overlapping passage openings for the release agent in the carrier tube and in the application sleeve ensure that the release agent emerges safely from the inside of the release agent roller to the outside.
  • the application sleeve is formed from half-shells that can be plugged together. With this measure, the application sleeve can be manufactured inexpensively.
  • the multipart nature of the application sleeve is particularly advantageous if the application sleeve does not consist of metal, but, as in a further embodiment of the invention, of heat-resistant thermoplastic.
  • the injection mold of the thermoplastic is identical for both half-shells if the half-shells are designed accordingly.
  • the application sleeve consisting of the two half shells joined together can be wrapped in a simple manner with a release agent-permeable material. As a result, the exchangeable application role can be produced in a simple and inexpensive manner.
  • a separable material-permeable material layer is, for example, a paper layer of glued felt or a vulcanized silicone foam, which is encased by an approximately 0.4 mm thick membrane layer from Gore.
  • the latter release agent-permeable material layer has the advantage of less contamination than felt, easier cleaning of toner residues and paper dust and a longer service life.
  • form-fitting entrainment means are provided between the carrier tube and the application roll. These entrainment means partially cover the passage openings for the release agent in the carrier tube and in the application sleeve. This can be done, for example, by circumferential interlocking of the inner surface of the application roll and the outer surface of the carrier tube, which interlock.
  • Another possibility is the form-fitting connection of the support tube and the support roller by means of a bayonet.
  • a link is provided in the carrier tube or in the application sleeve, into which a wart of the application sleeve or the carrier tube axially penetrates when the application roller is pushed onto the carrier tube and when
  • the separating agent metering device can be pivoted by means of a pivoting device about a position assigned to a rotational axis parallel to the fixing roller axis in different operating positions. As a result, the separating agent metering device can be pivoted away from the fixing roller in a simple, user-friendly and captive manner.
  • a first pivoting position is the rest position of the release agent dosing device, which it assumes whenever the fixing process of the heat-pressure fixing device is interrupted. This avoids unnecessary heating of the release agent donor roll, thereby increasing the service life of the release agent donor roll.
  • Another pivot position is a maintenance position of the release agent metering device.
  • the release agent roller can be removed from the release agent metering device in this maintenance position. The replacement is so easy that an operator who is not specially trained can replace the release agent role.
  • the release agent metering device lies with its own weight, guided by its pivot axis, freely on the fixing roller, so that the contact width (the so-called nip) between the fixing roller and the release agent roller is constant in the axial direction.
  • a further embodiment and development of the invention according to which a release agent supply plug projects radially from the release agent metering tube, and a release agent supply socket is arranged on the release agent metering device in such a way that the release agent supply plug is inserted into the release agent supply socket when the release agent supply roller is inserted into the oil metering device penetrates, further simplifies the exchange of the application role.
  • the release agent donor roll can be completely separated from the release agent metering device in a single operation, and the application roll can be exchanged without the carrier tube and release agent metering tube being connected to the release agent metering device.
  • the ends of the release agent metering tube are mounted in a first and a second flange.
  • the first flange has a fitting bore, the axis of which is aligned with the axis of the release agent metering tube in the installed position and the bottom of which is at least one flange penetration connected to a release agent supply device.
  • the end of the release agent metering tube mounted in the first flange is designed as a clutch disc, the outer surface of which has the shape of a spherical layer with a spherical radius equal to the fitting bore radius, and whose axis of symmetry, which is perpendicular to the flat part of the spherical layer surface, is aligned with the separator metering tube axis.
  • the clutch disk has an axially directed clutch disk penetration leading to the separating agent metering tube and aligned with the axially aligned part of the flange penetration.
  • a sealing washer can be inserted between the clutch disc and the bottom of the fitting bore, said sealing washer being in alignment with the axially aligned part of the flange penetration Has sealing disc penetration. This further increases the tightness of the coupling during operation and the reliability of the fluid coupling.
  • the second flange is designed as a floating bearing, into which the release agent metering tube can be inserted in the radial direction.
  • At least one locking element which secures the separating agent metering tube radially against falling out, and at least one element, which presses the separating agent metering tube axially in the direction of the first flange, are provided on the floating bearing. Due to the different shape of the ends of the release agent metering tube mounted in the flanges, the installation position of the release agent donor roller in the release agent metering device is unmistakable.
  • a simple means is shown in the area of the second flange with which the release agent donor roller can be held securely in the release agent metering device.
  • the force of the power means also serves to achieve the tightness of the coupling device.
  • a flap which closes the floating bearing in a ring, can serve as a locking means. The flap can be locked in its position which secures the separating agent metering tube against falling out by a snap mechanism. All types of springs are suitable as power means, the force of which can be steered in the desired axial direction.
  • a weight the force of which can be steered in the desired axial direction, for example by means of a wire rope, can also act as a power source.
  • a leaf spring is fastened on one side to the second flange, which positively engages around the corresponding end of the separating agent metering tube for locking against falling out and presses the separating agent metering tube axially in the direction of the first flange. If the required force cannot be applied with a single leaf spring, then you can several leaf springs arranged one above the other apply this force. With such an arrangement one speaks of a leaf spring assembly.
  • the leaf spring package which at the same time holds the release agent roller radially non-positively, guarantees a particularly simple change of the release agent roller.
  • the release agent roller can be removed from the release agent metering device by one-sided, jerky lifting against the friction force of the leaf spring assembly.
  • a circumferential fitting bore groove is provided in the bottom of the fitting bore along the axially oriented walls thereof, so that the base has a stamp-like elevation in whose surface the flange penetration opens.
  • the clutch disc On the opposite side, the clutch disc has an axially directed recess into which the sealant can be inserted.
  • the cross section of the stamp-like elevation is smaller than the cross section of the recess in the clutch disc.
  • the sealing disk in the recess of the clutch disk is particularly well protected against damaging mechanical influences.
  • the stamp-like elevation penetrates into the recess of the clutch disc and, due to the axial force emanating from the second flange, presses the sealant into the recess.
  • the sealing means is held in the recess in a form-fitting manner by a collar that reduces the cross section of the depression.
  • the sealing disk is captively connected to the clutch disk.
  • spring elements which can be pushed over the release agent metering tube are rings are provided, with the help of which individual metering tube bores can be closed.
  • FIG. 1 shows an axially cut release agent roller
  • FIG. 2 shows a radially cut release agent roller
  • FIG. 3 shows a backdrop in the carrier tube
  • FIG. 4 shows a first embodiment of a heat-pressure fixing device in a side view with the release agent metering device in the working position and the release agent inlet plug
  • FIG. 5 shows a further embodiment of a heat-pressure fixing device in a side view with a release agent metering device and release agent inlet bushing in the maintenance position
  • FIG. 6 shows a further embodiment of a heat-pressure fixing device in a side view with a release agent metering device and clutch disc in the maintenance position
  • FIG. 7 shows part of an axially cut release agent metering device according to FIG. 6 and 8 shows a view of a second flange of the release agent metering device according to FIG. 6 receiving one end of the release agent donor roll.
  • Figure 1 shows a release agent roller 1, which is an essential part of a release agent metering device 30.
  • liquid release agent is applied to a fixing roller 8 (see FIGS. 4 and 5).
  • the release agent prevents the depositing of toner particles on the surface of the fixing roller 8 and thereby supports the fixing process in a heat-pressure fixing device.
  • Release agent is generally used in oil, but any other liquid can be used to accomplish the desired task.
  • the release agent roller contains a carrier tube 6 with an exchangeably arranged application roller 7.
  • the application roller 7 can be pushed axially over the carrier tube 6.
  • entrainment means of the carrier tube 6 and the application roll 7 engage in one another in a form-fitting manner. The position of the application roll 7 to the carrier tube 6 is thus determined.
  • the application sleeve 4 is part of the application roll 7.
  • release agent can get from the inside of the carrier tube 6 into a release agent-permeable material layer 13 on the application sleeve 4.
  • the release agent-permeable material layer 13 is part of the application roll 7.
  • the release agent diffuses through the release agent-permeable material layer 13 to the surface of the release agent donor roll 1. From there, the release agent is transferred directly to the fixing roller 8 by tangential rolling.
  • a uniform supply of the release agent-permeable material layer 13 with release agent is ensured by four rows of through openings arranged at equal distances from one another. gen 11, 12 in the carrier tube 6 or in the application sleeve 4 guaranteed.
  • the release agent enters the interior of the carrier tube 6 with the aid of a release agent metering tube 5.
  • the release agent metering tube 5 additionally serves as the axis of rotation of the release agent donor roll 1 and consequently penetrates the carrier tube 6 axially.
  • Carrier tube 6 is rotatably supported in the region of its end faces on the release agent metering tube 5 via heat-resistant deep groove ball bearings 20.
  • Simmer rings 19 are provided on the sides of the deep groove ball bearings 20 facing the inside of the roller, which prevent release agent from escaping through the deep groove ball bearings 20.
  • locking washers 18 are provided on the outer sides of the deep groove ball bearings 20, care being taken to ensure sufficient play to compensate for the thermal expansion differences between the separating agent metering tube 5 and the carrier tube 6.
  • Release agent 15 is pumped into a release agent metering tube 5 from a storage container (not shown) with a hose 15 plugged into a release agent inlet plug 9.
  • Release agent metering openings 10 are arranged axially in the release agent metering tube 5. The separating agent emerges from these separating agent metering openings 10 and passes through the openings 11, 12 for the separating agent in the carrier tube 6 and in the application sleeve 4 into the separating agent-permeable material layer 13.
  • the diameter of the release agent metering tube 5 is in each case reduced in the region of some adjacent release agent metering openings 10 such that a spring ring 3 for covering a release agent metering opening 10 is axially secured against displacement on the release agent metering tube 5.
  • Each spring ring 3 partially surrounds the release agent metering tube 5.
  • both the outside diameter of the support tube 6 and the inside diameter of the application sleeve 4 are in the area of each end face two paired, circumferential notches 29 are provided.
  • the notches 29 on the application sleeve side additionally have bores to the outside diameter of the application sleeve 4.
  • the notches 29 serve as a labyrinth for the release agent and prevent the release agent residue not sucked up by the release agent-permeable material layer 13 from escaping on the end faces of the release agent roller 1. Rather, the release agent residue is released into the release agent-permeable material layer 13 via the holes in the notches 29.
  • a bayonet catch consisting of a link 22 and a wart 23 is provided as a form-fit entraining means between the application roll 7 and the carrier tube 6 (see FIGS. 2 and 3).
  • the link 22 is L-shaped, one leg being introduced in the axial direction and one leg in the radial direction into the surface of the carrier tube.
  • the wart 23 protrudes from the inside diameter of the application sleeve 4. When the application roller 7 is pushed axially onto the carrier tube 6, the wart 23 enters the axial leg of the link 22. When the axial end position of the application roller 7 is reached, the radial leg of the link 22 begins. In FIG.
  • the application sleeve 4 consists of two thermoplastic half shells.
  • an application roller 7 with an application sleeve 4 made as thermoplastic half-shells is more cost-effective. This is largely due to the fact that the passage openings 12 for the release agent are introduced into the half-shells virtually free of charge in the process of spraying the thermoplastic half-shells. There is no drilling of the through openings 12 for the release agent.
  • the thermoplastic Rython R-4 which is heat-resistant and sprayable up to 180 ° C, is suitable. This material is also suitable because its coefficient of thermal expansion matches the coefficient of thermal expansion of the carrier tube 6 made of aluminum.
  • the two identical half-shells of the application sleeve 4 are joined radially to form a tube by means of interlocking interlocking inner centering ribs 33 and outer centering ribs 32.
  • the release agent-permeable material layer 13 is wound spirally around this tube and ensures that the half-shells remain plugged together.
  • the link 22 can be provided in a particularly cost-effective manner in the half-shells of the support sleeve 4 on the inside diameter thereof.
  • the backdrop 22 is particularly easy to manufacture by injection molding. E ⁇ then only the wart 23 must be provided on the support tube 6.
  • FIGS. 4, 5 and 6 show the arrangement of the release agent metering device 30 in the heat-pressure fixing device.
  • the heat-pressure fixing device according to the transfer printing principle
  • a recording medium 27 is fed to the working printing or copying device.
  • the recording medium 27 comes between a pressure roller 37 and the fixing roller 8.
  • the fixing roller 8 and the pressure roller 37 roll on one another and transport the recording medium 27 by friction.
  • FIGS. 4, 5 and 6 show three different versions of the release agent metering device 30.
  • the release agent metering device 30 is mounted so as to be pivotable about an axis of rotation 2 parallel to the fixing roller axis.
  • the base body of the release agent metering device 30 is formed by a flat steel, e.g. 40 mm x 15 mm or an extruded aluminum profile.
  • the flat steel has the advantage over the aluminum that it has a desired, higher dead weight.
  • the flat steel extends parallel along the fixing roller 8.
  • flanges 31, 38, 50 are provided, which serve to fasten the release agent metering tube 5 and thus the release agent donor roll 1.
  • a weight 34 is provided on the side of the profile facing away from the fixing roller 8 such that the pressure of the release agent roller 1 on the fixing roller 8 is so great that a reliable and sufficient release agent application can take place.
  • This weight 34 also ensures that the release agent roller 1 can be driven by the fixing roller 8 continuously by friction.
  • the weight 34 is superfluous. With a dead weight of approx. 1.4 kg of the flat steel, the effect mentioned is nevertheless achieved.
  • the design variants also have in common that a
  • FIGS. 4, 5 and 6 differ in the type of fastening of the release agent roller 1 in the release agent metering device 30.
  • two half-shells are provided in the flanges 31, into which the release agent metering tube 5 can be inserted .
  • a pin is provided on the separating agent metering tube 5, which penetrates into a corresponding bore in one of the half-shells.
  • Two bars 16 assigned to the half-shells hold the release agent metering tube 5 in the half-shells.
  • the bolts 16 are connected on one side to the flanges 31 via a bolt pivot point 28.
  • the hooks 29 have a run-up slope in the folding direction which, during the folding process, deflects a leaf spring 26 assigned to the bolt 16 away from the end of the bolt until the folding process is finished and the bolt holds the release agent metering tube 5 in its desired position in the half-shells.
  • the hook 29 penetrates into an opening provided in the leaf springs 26, as a result of which the leaf spring 26 springs back into the latch 16 and holds it in its desired position.
  • the release agent roll 1 is removed with the release agent metering device 30 in the maintenance position.
  • the bolts 16 are designed such that when they are opened they rest on a stop provided in the region of the bolt pivot point 28. Your the release agent metering tube 5 facing side is then in approximately horizontal position. In this position, the release agent metering tube 5 can be placed on the bars 16, so that damage to the hose 15, which is pushed over the release agent inlet plug 9, is prevented.
  • the variant according to FIG. 5 has a separating agent supply bushing 14.
  • the separating agent metering tube 5 When the separating agent metering tube 5 is inserted into the flanges 31, the separating agent supply plug 9 penetrates into the separating agent supply bushing 14. Due to the interaction between the release agent inlet plug 9 and the release agent inlet bush 14, the release agent metering tube 5 and thus the release agent dispenser roller 1 are secured axially and radially against displacement.
  • the flanges 31 in the variant according to FIG. 5 are V-shaped, the V-shape on their thigh contact area being circular so that the
  • Leg partially grip the release agent metering tube 5 in a form-fitting manner.
  • One of the legs is designed as a spring leg 36. This spring leg 36 is deflected when the separating agent metering tube 5 is inserted or pulled out and secures the separating agent metering tube 5 against falling out when the desired position is reached.
  • the release agent dispenser roll 1 can be completely removed from the release agent metering device 30 in a simple manner and is not connected to the hose in the removed state.
  • the release agent is fed to the release agent metering device 30 via the release agent supply hose 6.
  • the release agent supply hose 6 is part of a release agent supply device, not shown, which can be implemented by an electromechanical pump.
  • the release agent supply hose 6 is pushed over a nipple 60 and secured thereon by a ring 61.
  • the nipple 60 has a nipple bore 62 which opens into a flange penetration 63.
  • the flange penetration 63 extends at right angles in the first flange 38.
  • the nipple-side end of the flange penetration 63 is oriented at right angles to the release agent metering tube axis, while the release agent metering end of the flange penetration 63 on the tube side is aligned with the release agent dosing tube axis.
  • FIG. 7 shows an axial section through the separating agent metering device 30.
  • the separating agent donor roll 1 is arranged between the first flange 38 and the second flange 50.
  • the release agent donor roll 1 also includes the release agent metering tube 5, on the ends of which sleeves 58, 59 are pressed.
  • the sleeves 58, 59 serve on the one hand to support the release agent metering tube 5 in the first and second flange 38, 50 of the release agent metering device 30 and on the other hand to accommodate heat-resistant deep groove ball bearings 20 by means of which the application roller 7 about the axis of the release agent metering tube 5 is rotatably mounted.
  • the coupling device consists of a fitting bore 45 made in the first flange 38, the axis of which is aligned with the axis of the release agent metering tube 5 in the installed position and a coupling disk 39.
  • the outer shape of the coupling disk 39 corresponds to a spherical layer with a spherical radius equal to the fitting bore radius .
  • the symmetrical axis of the clutch disc 39 which is perpendicular to the flat spherical layer surfaces of the same surface, is aligned with the separating agent metering tube axis.
  • the clutch plate 39 is made in one piece with the sleeve 58 pressed onto the separating agent metering tube 5. In another embodiment, in which the sleeves 58, 59 would be dispensed with, the clutch disc 39 can also be made in one piece with the separating agent metering tube 5.
  • the clutch disk 39 has a penetration just like the first flange 38. This clutch disk penetration is axially directed and aligned with the release agent tube axis.
  • the clutch disc 39 has an axially directed circular-cylindrical recess starting from the flat spherical layer surface which faces away from the separating agent metering tube 5. A sealing disk 40 is inserted into this depression, the size of which corresponds approximately to the size of the depression.
  • the bottom of the recess in the clutch disc 39 is designed as a clutch disc sealing surface 47.
  • the clutch disc sealing surface 47 is flat.
  • the edge of the clutch disk sealing surface 47 is set back from the clutch disk sealing surface 47 in the form of a circumferential clutch disk notch 48. This serves for a defined support of the sealing disk 40 at the edge of the depression.
  • the sealing disk 40 is held in the recess of the clutch disk 39 in a form-fitting manner by a clutch disk collar 49.
  • the clutch disc collar 49 is located on the outer edge of the depression and reduces the cross section of the depression at this point.
  • the sealing disk 40 has a sealing disk penetration 43, the axis of which is aligned with the axis of the separating agent metering tube.
  • the fitting bore 45 has a circumferential fitting bore groove 46 along its axially directed walls.
  • the fitting bore bottom has a stamp-like elevation, the flat surface of which facing the sealing disk 40 forms a stamp sealing surface 44.
  • the stamp sealing surface 44 is slightly smaller than the cross section of the recess in the coupling disc 39 which is reduced by the coupling disc collar 49.
  • the stamp sealing surface 44 lies on the sealing disc 40 over the entire surface.
  • the second flange 50 of the release agent metering device 30 is designed as a floating bearing.
  • the second end of the release agent metering tube 5, onto which the sleeve 59 is pressed, can be inserted radially into this floating bearing.
  • the second flange 50 is designed accordingly, as shown in FIGS. 7 and 8.
  • the second flange 50 has a half shell 51, which in Removal direction of the release agent roll 1 is open. This opening is designed as a half-shell funnel 52 so that it is easier to insert the release agent metering tube 5 into the half-shell 51.
  • one end of a leaf spring 41 is fastened with the aid of a clamping screw 64.
  • the leaf spring 41 extends from the clamping screw 64 and extends beyond the end face of the separating agent metering tube 5.
  • the release agent metering tube 5 has a hardened cylindrical pin 53 on this end face. This cylinder pin 53 protrudes above the surface of the end face and closes the release agent metering tube 5 so that no release agent can escape.
  • the leaf spring 41 has a pretension which causes a sealing force 42 in the direction of the arrow axially on the separating agent metering tube 5 in the direction of the first flange 38.
  • the leaf spring 41 lies on the hardened cylinder pin 53.
  • the special design of the leaf spring 41 serves as a locking means against radial release of the separating agent metering tube 5 from the floating bearing of the second flange 50.
  • the leaf spring 41 is in the region of the open side of the half-shell of the second flange 50 in the direction of the first flange 38 bent so that the leaf spring 41 rests on the sleeve 59.
  • the sleeve 59 is chamfered in the contact area.
  • the bending curve of the leaf spring 41 finally follows a round bending edge 54. This bending curve causes the free end of the leaf spring 41 to extend obliquely outwards from the two flanges 38, 50.
  • This free end serves as a run-up slope which is pushed away from the second flange 50 when the release agent dispenser roll 1 is inserted into the release agent metering device 30. A too large deflection of the leaf spring 41 away from the second flange 50 is prevented by a spring travel limiter 57. If no release agent roller 1 is inserted into the release agent metering device 30, then the
  • the application sleeve 4 can be pulled off the station-bound carrier tube 6 and replaced by a new application sleeve 4.
  • the operator inserts the coupling disk 39 into the fitting bore 45 of the first flange 38.
  • the other end of the separating agent metering tube 5 is placed in the half-shell funnel 52 and pressed against the run-up slope 55 of the leaf spring 41.
  • the leaf spring 41 springs outwards and locks automatically when
  • the release agent donor roll 1 is thus anchored liquid-tight in the release agent metering device 30.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Fixing For Electrophotography (AREA)

Abstract

Le dispositif de dosage d'agent séparateur (30) contient un rouleau d'amenée d'agent séparateur (1), qui roule de manière tangentielle sur le rouleau fixateur (8). L'agent séparateur prélevé à l'intérieur du rouleau d'amenée d'agent séparateur (1) parvient à sa surface et est transféré sur le rouleau fixateur (8). Le rouleau d'amenée d'agent séparateur (1) contient un tube support (6) monté rotatif sur un tube doseur d'agent séparateur (5) et un rouleau d'application (7) monté de manière échangeable dessus. Le rouleau d'application (7) qui contient un manchon (4) muni d'une couche d'un matériau (13) perméable à l'agent séparateur, fixée dessus, peut coulisser axialement au-dessus du tube support (6).
EP93922955A 1992-10-22 1993-10-14 Dispositif de dosage d'agent separateur pour un rouleau fixateur d'une imprimante ou d'une photocopieuse Expired - Lifetime EP0665965B1 (fr)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
DE4235671 1992-10-22
DE19924235671 DE4235671C2 (de) 1992-10-22 1992-10-22 Trennmitteldosiervorrichtung für eine Wärme-Druckfixiervorrichtung einer elektrofotografischen Druckeinrichtung
DE4306049 1993-02-26
DE19934306049 DE4306049C1 (de) 1993-02-26 1993-02-26 Flüssigkeitsdichte axiale Kupplungsvorrichtung für eine Trennmittelgeberrolle einer Trennmitteldosiervorrichtung
PCT/EP1993/002845 WO1994009411A1 (fr) 1992-10-22 1993-10-14 Dispositif de dosage d'agent separateur pour un rouleau fixateur d'une imprimante ou d'une photocopieuse

Publications (2)

Publication Number Publication Date
EP0665965A1 true EP0665965A1 (fr) 1995-08-09
EP0665965B1 EP0665965B1 (fr) 1996-06-12

Family

ID=25919711

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93922955A Expired - Lifetime EP0665965B1 (fr) 1992-10-22 1993-10-14 Dispositif de dosage d'agent separateur pour un rouleau fixateur d'une imprimante ou d'une photocopieuse

Country Status (4)

Country Link
US (1) US5534986A (fr)
EP (1) EP0665965B1 (fr)
DE (1) DE59302946D1 (fr)
WO (1) WO1994009411A1 (fr)

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US5732317A (en) * 1995-11-02 1998-03-24 Eastman Kodak Company Rotating wick device
US6041211A (en) * 1996-06-06 2000-03-21 W. L. Gore & Associates, Inc. Cleaning assembly for critical image surfaces in printer devices and method of using same
DE19727270C1 (de) * 1997-06-26 1998-06-25 Oce Printing Systems Gmbh Vorrichtung zum Zuführen von Trennmittel an die Fixierwalze eines elektrophotographischen Geräts
US6032016A (en) * 1997-09-19 2000-02-29 Minolta Co., Ltd. Fixing apparatus including apparatus for controlling the supply of releasing agent
JP4197548B2 (ja) * 1998-05-25 2008-12-17 株式会社東芝 定着装置
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See also references of WO9409411A1 *

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DE59302946D1 (de) 1996-07-18
WO1994009411A1 (fr) 1994-04-28
US5534986A (en) 1996-07-09
EP0665965B1 (fr) 1996-06-12

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