EP2154580A2 - Appareil et méthode de contrôle d'alimentation en toner dans une imprimante ou copieur electrophotographique - Google Patents

Appareil et méthode de contrôle d'alimentation en toner dans une imprimante ou copieur electrophotographique Download PDF

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Publication number
EP2154580A2
EP2154580A2 EP09176649A EP09176649A EP2154580A2 EP 2154580 A2 EP2154580 A2 EP 2154580A2 EP 09176649 A EP09176649 A EP 09176649A EP 09176649 A EP09176649 A EP 09176649A EP 2154580 A2 EP2154580 A2 EP 2154580A2
Authority
EP
European Patent Office
Prior art keywords
toner
toner material
air
buffer
valve
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Withdrawn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
EP09176649A
Other languages
German (de)
English (en)
Inventor
Bernhard Schlageter
Klaus STRÖL
Reinhold Schmidl
Josef Ranner
Bernd Schoch
Joseph Knott
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
Oce Printing Systems GmbH and Co KG
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 Oce Printing Systems GmbH and Co KG filed Critical Oce Printing Systems GmbH and Co KG
Publication of EP2154580A2 publication Critical patent/EP2154580A2/fr
Withdrawn legal-status Critical Current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
    • G03D—APPARATUS FOR PROCESSING EXPOSED PHOTOGRAPHIC MATERIALS; ACCESSORIES THEREFOR
    • G03D5/00—Liquid processing apparatus in which no immersion is effected; Washing apparatus in which no immersion is effected
    • 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
    • G03G15/0822—Arrangements for preparing, mixing, supplying or dispensing developer
    • G03G15/0848—Arrangements for testing or measuring developer properties or quality, e.g. charge, size, flowability
    • G03G15/0849—Detection or control means for the developer concentration
    • G03G15/0855—Detection or control means for the developer concentration the concentration being measured by optical means
    • 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
    • G03G15/0822—Arrangements for preparing, mixing, supplying or dispensing developer
    • G03G15/0865—Arrangements for supplying new developer
    • 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
    • G03G15/0822—Arrangements for preparing, mixing, supplying or dispensing developer
    • G03G15/0877—Arrangements for metering and dispensing developer from a developer cartridge into the development unit
    • G03G15/0879—Arrangements for metering and dispensing developer from a developer cartridge into the development unit for dispensing developer from a developer cartridge not directly attached to the development unit
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G2215/00—Apparatus for electrophotographic processes
    • G03G2215/06—Developing structures, details
    • G03G2215/066—Toner cartridge or other attachable and detachable container for supplying developer material to replace the used material
    • G03G2215/0685—Toner cartridge or other attachable and detachable container for supplying developer material to replace the used material fulfilling a continuous function within the electrographic apparatus during the use of the supplied developer material, e.g. toner discharge on demand, storing residual toner, not acting as a passive closure for the developer replenishing opening
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G2215/00—Apparatus for electrophotographic processes
    • G03G2215/08—Details of powder developing device not concerning the development directly
    • G03G2215/0802—Arrangements for agitating or circulating developer material
    • G03G2215/0816—Agitator type
    • G03G2215/0827—Augers

Definitions

  • the invention relates to an apparatus and method for dosing toner material in an electrophotographic printer or copier.
  • the removal opening is optionally opened and closed to control the amount of toner material to be removed.
  • a latent charge image is formed on a photosensitive photoconductor material, a photoconductor drum, or a photoconductor belt.
  • This charge image is then inked in a developer station of the printer or copier with electrically charged toner.
  • the inked toner image is then applied to a support material, e.g. Paper, transferred and fixed on this.
  • a one-component developer or a two-component developer is used for developing the latent charge image in the developer station.
  • the one-component developer contains only toner particles; the two-component developer contains a mixture of toner particles and carrier particles.
  • the toner particles are electrically charged in the two-component developer by movements of the two-component developer mixture.
  • the charging of the toner particles is carried out by charge transport, e.g. from a carrier roll.
  • the amount of toner needed to produce the toner image must be supplied to the developer station in order to produce more toner images.
  • Known printers or copiers have a buffer near the developer station provided for toner material is conveyed from the toner material as needed or according to consumption in the developer station inside.
  • the cache is filled in known printers or copiers with toner material from handy toner transport containers through an opening directly into the reservoir or conveyed by a transport system from a remote transport container in the buffer.
  • the cache near the developer station has a level sensor in known printers or copiers.
  • toner must be supplied to the buffer from the toner transport container. This is done e.g. by emptying a transport container into the buffer.
  • closed containers filled with toner material in bottle or cartridge form are adapted to an opening in the buffer. The bottle or cartridge is opened by pulling a slider and / or tearing a tab, allowing the toner material to fall into the reservoir.
  • a toner container and a device for non-soiling of such a toner container in a toner conveying device of a printer or copier are known. If necessary, toner material is transported by means of suction air via a hose into the intermediate storage device from a toner supply container arranged away from the developer station.
  • a vertically displaceable proboscis dips through an opening in the top of the toner container and sucks out toner material.
  • a special shape of the toner reservoir and a laterally mounted vibrator ensure almost complete emptying of the container. To replace the reservoir of the proboscis is pulled out of the container.
  • the opening in the toner reservoir is always located at the top, preventing toner from spilling.
  • the delivery rate is heavily dependent on the level in the toner reservoir. With a reduction in the level also decreases the delivery of toner material, so that the printing process is interrupted at a low toner level in the reservoir and at the same time large amounts of toner in the developer station. Furthermore, the vibrator causes disturbing noises.
  • devices which include one about a horizontal rotating conveyor element which closes the lower opening of the toner container.
  • EP-A-0 494 454 It is also known to fluidize a powdered toner material by means of air. To empty a toner container, it can be made to vibrate.
  • JP03208066A is a toner reservoir with downwardly sloping side walls known.
  • the object of the invention is to provide an apparatus and a method for metering toner material in an electrophotographic printer or copier, in which or in which a to be conveyed from a container amount of toner material can be easily adjusted.
  • the toner material slips down through the discharge opening of the toner container into a blade chamber of a paddle wheel.
  • the toner material is conveyed on.
  • the amount of the promoted toner material can be easily controlled by the speed or by angular momentum of the impeller, whereby the amount of toner material is easily metered.
  • the delivered amount of toner material is thus dependent on the speed and the number and volume of the blade chambers. If too much toner material is conveyed through the blade wheel by the device according to the invention and toner material accumulates below the paddle wheel, then toner material simply remains in the blade chamber. The toner material is neither compressed nor damaged.
  • sealing elements are arranged on the peripheral sides of the blade wheel in the circumferential direction in the area to the right and left of the axis of rotation.
  • the blades are guided past these sealing elements during rotation of the impeller, whereby the opening of the toner container can be sealed airtight by the impeller. If e.g. It is necessary for the toner container to be airtight and for air to flow in via a toner delivery line. The opening of the toner container for the removal of toner material must therefore be hermetically sealed.
  • the toner container has at least in the region of the removal opening gas-permeable areas through which air can flow into the toner container and at least in these areas a flowable toner material-air mixture is formed.
  • a toner material-air mixture can simply flow through the removal opening of the storage container into the blade chamber and, after rotation of the blade wheel, flow out of this blade chamber again.
  • the toner material-air mixture can also be subsequently easily conveyed.
  • solidified toner material is loosened by the supplied air. Deposits of toner material or so-called Tonermaterialweraum be prevented by the supplied air and existing dissolved again.
  • a second aspect of the invention relates to a method of dosing toner material in an electrophotographic printer or copier. This method is carried out, for example, by means of the device according to claim 1.
  • the advantageous given for the process technical effects also relate to the method of dosing toner material.
  • a third aspect of the invention relates to a method for separating toner material and air from a toner material-air mixture.
  • a filter material, a toner material-air mixture is supplied in a first phase of operation.
  • the filter medium is at least traversed by the air in a first direction.
  • a second operating phase the passage of the filter medium through air in the first direction is interrupted in such a way that toner material deposited on the filter medium is released therefrom.
  • This method it is achieved that the filter medium is not clogged by deposited on the filter medium toner material and only a small amount of air can be promoted by the filter means.
  • Such a method can be used, for example, for depositing the toner material when toner material is conveyed by means of negative pressure.
  • the filter means is then arranged in front of the vacuum means for generating the negative pressure to prevent toner material from entering the vacuum means.
  • a predetermined air flow is necessary for conveying toner material by means of such a negative pressure. This air flow is only guaranteed if the filter medium is not or only slightly added with toner material.
  • the second phase of operation ensures that toner material deposited on the filter medium is simply removed therefrom.
  • the air flow through the filter medium can be aligned in the first phase of operation, for example vertically upwards. This ensures that in the second phase of operation, the toner material simply falls down from the filter medium.
  • the filter medium is flowed through in the second operating phase in an approximately opposite direction to the first second direction with air. This ensures that even toner material that has been deposited in the filter medium, can be dissolved out of this again. Even with large adhesion forces between toner material and filter medium, e.g. due to electrostatic forces, the toner material from the filter means using the air flow can be solved very easily. Other additional means, such as vibrators or scrapers are not necessary for cleaning the filter medium.
  • the first and second operating phases alternate, the first operating phase comprising a time of approximately two seconds and the second operating phase comprising a time of approximately one second. This ensures that the filter medium is continuously cleaned and deposits are effectively prevented in the filter medium. Blockages of the filter medium can not arise in the first place.
  • an apparatus for separating toner material and air is disclosed.
  • This device essentially comprises means for carrying out the method according to the third aspect of the invention.
  • the technical effects and advantages specified in the method according to the third aspect of the invention thus also apply correspondingly to the device for separating toner material and air.
  • a metering device is provided with a toner buffer having a supply means for the toner-air mixture and luftdruchine, in particular funnel-shaped obliquely to each other formed side walls through which a low air pressure can be blown into the buffer.
  • This slight overpressure is particularly adjustable and causes no disturbing toner deposits to form on the side walls of the buffer.
  • the pore size of the air-permeable regions is in particular in the range 0.1 to 100 microns.
  • the arrangement of the toner buffer is particularly suitable for the metered delivery of toner in a developer station, and it has the advantage over arrangements with agitators that no mechanically moving devices such as agitators are needed through which squeezed the toner on other materials such as the walls and agitators is rubbed and thus undergoes a much lower mechanical and electrostatic change.
  • the amount of toner delivered from the buffer to the metering orifice can be determined and maintained very accurately via the injection pressure and the tube cross section of a sparger without additional dosing agents such as stirrers, squeegees or the like. Needed.
  • a method of supplying toner material to a plurality of developer stations is in a First operating phase supplied by an air flow toner material from a toner container in a first buffer of a first developer station.
  • toner material from the toner container is fed to a second intermediate storage of a second developer station by an air flow. This ensures that two developer stations can be supplied with toner material from a toner container. This considerably simplifies, for example, the construction of a printer with two developer stations. Even if several printers are supplied with toner material from a toner container, the structure of the printer is simplified by central supply of the developer stations with toner material.
  • Replenishing toner material into multiple developer stations is greatly simplified for an operator because it only needs to replace one toner container for multiple developer stations.
  • the inventive method it is particularly advantageous to use large toner containers with a volume for receiving 5 to 30 kg toner material. Thus, even large print jobs can be processed, without operator actions to refill toner material are necessary. Downtimes can be significantly reduced.
  • toner material deposited on a filter medium is removed therefrom in a third operating phase.
  • This ensures that a filter means which is provided in the printer or copier to separate toner material and air of a toner material-air mixture is cleaned of toner material and thus clogging of the filter medium is prevented.
  • the filter medium can be flowed through, for example, in the third phase of operation with air, which is opposite to the flow direction in which the filter means for separating the toner material-air mixture is traversed by air. As a result, adhering toner material is also released again on the filter medium.
  • the first and the second operating phase each have a duration of about two seconds and the third operating phase have a duration of about one second. It is also possible to carry out a fourth operating phase between the first and second operating phase in which the same method steps are carried out as in the third operating phase. This ensures that in the first and second operating phase in each case the same flow rate is possible and also in the second phase of operation, a sufficient amount of air can be sucked through the filter means.
  • the first and second operating phases are only executed if a preset level of toner material in the intermediate memory of the developer station is not reached in the associated developer station. Until the setpoint is undershot, toner material is no longer fed into this buffer, i. the first and second operating phases are not carried out. If the first and second operating phases are not carried out due to the fill levels in the latches of the developer station, the third phase of operation is advantageously also not carried out.
  • FIG. 1 a toner conveying system 10 of a printer or copier is shown.
  • the toner conveying system 10 is for feeding toner material 12 into a developer station 14.
  • the toner material 12 is fed to the unillustrated printer or copier through a reservoir 16 containing the toner material 12 therein.
  • An opening 18 serves to remove toner material 12. It is shown in a second, lower position, as will be explained below.
  • a closure device 20 is toner-tightly connected to the toner container 16 in such a way that toner material 12 slips out of the storage container 16 into the closure device 20.
  • the closure device 20 includes a funnel 22 into which the toner material 12 slides out of the reservoir 16.
  • the funnel 22 has a funnel outlet 24, which is connected to a pipe system 26 air and toner tight.
  • the pipe system 26 connects the hopper outlet 24 to a buffer 28, which is located near the developer station 14 and is stored in the toner material 12 for further transport into the developer station 14.
  • the buffer 28 includes a stirrer 30, a level sensor 32 and a metering device 34 which includes a paddle wheel.
  • a toner conveying tube 36 with a toner conveying spiral 38 connects the buffer 28 to the developer station 14 and conveys toner material 12 from the buffer 28 to the developer station 14 as needed. With the aid of the metering device 34 and / or the conveying tube 36, which are each connected to a drive device, not shown , the amount of toner material 12 delivered to the developer station 14 is adjusted and metered.
  • the stirrer 30 mixes the toner material 12 in the buffer 28.
  • the buffer 28 is airtight, wherein the hermetically sealed space of the buffer 28 via a pipe system 40 which includes a control valve 42 is connected to a central vacuum line 44. By a vacuum blower 46, a negative pressure in the central vacuum line 44 is generated.
  • the piping 40 is connected to an upper portion of the buffer 28. Below the junction 48, a filter 50 is disposed toward the closed space. Below this filter 50, the buffer 28 is connected to the pipe system 26.
  • the control valve 42 regulates the negative pressure in the pipe system 40 and in the associated intermediate storage 28 and in the pipe system 26. This negative pressure ensures that toner material 12 from the funnel outlet 24 of the closure device 20 is transported into the space of the buffer 28 via the pipe system 26.
  • the amount of the conveyed toner material 12 can be adjusted analogously in many positions with the aid of the control valve 42.
  • the control valve 42 may also be operated in two-point operation in other embodiments, wherein the funded amount of toner material 12 then depends on the negative pressure in the pipe system 44 and the opening time of the control valve 42.
  • Funnel 22 has porous, air-permeable funnel walls. Due to the negative pressure at the funnel outlet 24, air is sucked out of the closure device 20 into the funnel 22 through the funnel walls. In the funnel 22 thereby a toner-air mixture is generated, which has a liquid-like, so-called fluidized state. Via an opening 52 in the closure device 20 of this air is supplied, which is drawn as described with the aid of the negative pressure in the hopper 20.
  • the air supplied through the opening 52 can be controlled.
  • the hopper outlet 24 is further connected to a pipe system 54 with a control valve 56, via which the pipe system 26 ambient air can be supplied.
  • a check valve (not shown) is further included, which prevents leakage of toner material even under unfavorable pressure conditions in the pipe systems 44, 26, 54.
  • the amount of toner material 12 is regulated, which is conveyed from the container 16 in the buffer 28.
  • the control valves 42 and 56 are electrically driven valves. With the help of the control valve 42, the negative pressure conditions in the buffer 28 and in the pipe system 26 can be set exactly. According to the signal of the Level sensor 32, the toner transport from the reservoir 16 is controlled in the buffer 28. Serve as actuators of the control, as already mentioned, the control valve 42 and the control valve 56. By these control valves 42, 56, the suction air required for the toner transport is set. The toner material 12 emerging from the funnel outlet 24 is entrained by the air flow in the pipe system 26, 54 and transported to the intermediate storage device 28. The filter 50 in the buffer 28 prevents the further transport of the toner material 12 in the pipe system 40th
  • the clean air side of the filter 50 is vented to ambient pressure.
  • the buffer 28 at least briefly a negative pressure relative to the ambient pressure in the pipe system 40.
  • the air flow at this pressure equalization is the air flow at Aspirated the toner material oppositely directed.
  • Toner material 12 attached to the filter 50 is released from the filter 50 by the air flow during pressure equalization and falls into the buffer memory 28. Possible leakage of toner material 12 via the pipe system 54 is prevented by the check valve 56.
  • the toner material 12 is transported from the buffer 28 by means of a delivery tube 36 into the developer station 15.
  • the conveyor tube 36 projects with one end into the developer station 14 and has at this end at a bottom 56 wide openings through which the toner material 12 from the conveyor tube 36 falls into the developer station 14.
  • the conveyor spiral 38 contained in the conveyor tube 36 has a pitch, so that it toner material 12 in the conveyor tube 36th transported in similar manner as in a screw conveyor tube from the buffer 28 to the developer station 14.
  • the conveying spiral 38 is, as already mentioned, driven by means of a drive unit.
  • the metering device 34 includes a paddle wheel-like roller, which is arranged between the buffer 28 and the delivery pipe. Such a metering device 34 is also referred to as a rotary valve.
  • the paddle-wheel-like roller seals the buffer store 28 to the delivery tube 36 in an almost air-tight manner, so that air is sucked out of the tube system 26 when a negative pressure is generated with the aid of the vacuum blower 46.
  • the paddle wheel-like roller is preferably driven in synchronism with the conveyor spiral 38, wherein upon rotation of the paddle wheel-like roller, also referred to as a cell wheel, toner material falls from the buffer 28 into the paddles or cells and is transported down the conveyor tube 36 by the rotation.
  • the delivery tube 36 has an opening in the region of the intermediate store below the metering device 34 at the top, so that the toner material 12 falls from the cells down into the delivery tube 36.
  • the stirrer 30 in the interior of the buffer 28 is driven by means of a drive unit, not shown, and prevents by a rotation, a cavitation or Wevier Struktur in the toner material 12 of the buffer 28th
  • FIG. 2 shows a sectional view of a metering device along a in FIG. 3 illustrated section line BB.
  • the reservoir 16 is in the arrangement after FIG. 2 arranged in the conveying position, wherein the reservoir 16 has a lower toner removal opening, through the toner material 12 from slipping out of the container downwards.
  • Below the removal opening 58 is a Roller 60 is arranged.
  • blades are arranged, one with 62 and another with 64 is designated.
  • the blades 62, 64 are star-shaped from the roller 60, wherein between two adjacent blades 62, 64 each have a blade chamber 66 is formed.
  • the blades 62, 64 are connected to the roller 60 via a connecting element 68.
  • the roller 60 is partially enclosed by a housing 70, so that the blade tips slide along the housing 70.
  • the blades 62, 64 seal the toner container 16 to a portion 72 below the roller 60 against the housing 70 air and toner tight.
  • a toner conveying spiral 74 is disposed in a toner conveying tube 76.
  • the toner conveying tube 76 has an opening upwardly to the roller 60 along the entire length of the roller 60.
  • the roller 60 together with the blades 62, 64 a paddle wheel 78.
  • the opening of the toner delivery tube 76 extends similar to the removal opening 58 in the reservoir 16 via the entire width of the paddle wheel 78th
  • the toner material 12 slips out of the removal opening 58 into the upwardly open blade chambers 66 of the paddle wheel 78, the toner material 12 slipping through the removal opening 58 of the storage container 16.
  • the reservoir 16 is seated with bearing surfaces 80, 82 on supports 84, 86 of the housing 70, whereby the reservoir 16 to the housing 70 toward air and toner sealed is completed.
  • the paddle wheel 78 thus forms a removal or metering device for removing toner material 12 from the reservoir 16.
  • the toner material 12 which has slid into the blade chamber 66, is transported downwards towards the region 72 during a rotation of the roller 60 in the blade chamber 66.
  • the toner material 12 falls in the region 72 of the blade chamber 66 out and into the delivery spiral 74 of the toner delivery tube 76 inside.
  • the remaining amount of toner material 12 remains in the blade chamber 66 and becomes the removal opening in the blade chamber 66 again 58 transported.
  • the blade chamber 66 In the region of the removal opening 58, the blade chamber 66, in which a residual amount of toner material 12 is located, is again completely filled with toner material 12 slipping out of the storage container 16. This ensures that the toner material 12 is not excessively mechanically stressed during conveying with the paddle wheel 78. In particular, the toner material 12 is not compressed in the regions 72 and in the toner delivery tube 76. Only the amount of toner material 12 falls in the area 72 from the blade chamber 66, which can fall into the delivery tube 76 or the amount of toner material 12, which is conveyed away by the toner tube 76.
  • the conveyor spiral 74 is driven by means of a drive unit, not shown, in the direction of the arrow P2.
  • the drive unit of the feed spiral 74 is coupled to the drive of the roller 60.
  • the drives and the blade chambers 66 are designed such that a larger amount of toner material 12 is conveyed with the aid of the paddle wheel 78 than can be transported further by the toner conveying tube 76 with the toner conveying spiral 74. This prevents cavities from being formed in the toner conveying tube 76.
  • the toner conveying tube 76 is arranged in the housing 70 at least in the region of the roller 60 or the impeller 78.
  • FIG. 3 is a sectional view of the metering device according to FIG. 2 shown along the section line AA, with only a left part of this sectional view is shown.
  • the roller 60 is rotatably mounted at its ends in bearings, wherein a in the FIG. 3 illustrated bearing is designated by 88.
  • the bearing 88 may be formed, for example, as a ball or sliding bearings.
  • a sealing element 90 is provided which seals an area around the paddle wheel 78 toward the bearing 88 and seals it in a toner-tight manner.
  • a sealing element 90 may for example be a Simmerring or a lip seal.
  • the toner material 12 is by means of the paddle wheel 78, as already in connection with FIG. 2 described, fed from the reservoir 16 into the toner conveying tube 76, wherein it falls from the blade chambers 66 into intermediate spaces 96 of the conveyor spiral 74. With the aid of the toner delivery tube 76, the toner material 12 from the storage container 16 can be conveyed very simply directly into the developer station 14 as well as into or out of a buffer store 28. This arrangement requires very little space and is very inexpensive to manufacture.
  • the toner material 12 is mechanically stressed only very slightly during transport from the reservoir 16 into the developer station 14 or the buffer 28.
  • the delivery tube 76 is in an arrangement of the delivery tube 76, as in the toner delivery system according to FIG. 1 shown and explained, the toner material 12 in a simple manner evenly distributed in the developer station 14 through the longitudinal opening on the bottom 57 of the conveyor tube 76.
  • the metering device according to Figures 2 and 3 is particularly good as a metering device 34 in the buffer 28 usable.
  • the delivery tube 76 is then functionally identical to the delivery tube 36 to toner material from the buffer 28 in the developer station 14 to promote.
  • the metering device guarantees according to the Figures 2 and 3 also an airtight seal to the delivery pipe 36, 76 and the developer station 14 out.
  • the uniform toner distribution over the length of the developer station 14 is possible by the toner delivery tube 36, 76 regardless of the level in the buffer 28 or in the reservoir 16.
  • the sealing elements 90, 92 are primarily used for lateral sealing of the impeller 78.
  • the airtight seal between the reservoir 16, and the conveyor tube 76 is achieved by sealing the blade ends against the housing 70.
  • the blade arrangement of the paddle wheel 78 and the shape of the housing 70 are adapted so that in each rotational position of the roller 60 at least two blade ends on each side of the paddle wheel 78 seal against the housing 70.
  • sealing elements may be provided, at which the blades 62, 64 are guided past the rotation of the paddle wheel 78.
  • the blades 62, 64 slide on the sealing elements. Both the removal opening 58 and the region 72 extend along the roller 60 or on the width of the impeller 78. It is also advantageous to arrange the walls of the storage container 16, 28 in the region of the removal opening 58 in a funnel shape such that it faces the removal opening 58 to run towards. This ensures that the toner material 12 easily slips through the removal opening 58 in the blade chambers 66 of the paddle wheel 78.
  • the walls of the toner reservoir 16 are permeable to gas at least in the region of the opening 58, wherein the toner material 12 in the reservoir 16 air is supplied. With the help of this air, a flowable toner material-air mixture is generated at least in the region of the opening 58, which flows particularly easily into the blade chambers 66 of the paddle wheel 78. It is particularly advantageous if the toner material 12 removed with the aid of the paddle wheel 78 falls into a toner conveying tube with a toner conveying spiral or with another screw conveyor since the toner material 12 can be conveyed particularly simply and gently with the aid of such a screw conveyor.
  • FIG. 13 is a toner conveying system 98 similar to the toner conveying system of FIG. 1 shown.
  • the toner conveying system 98 is different from the toner conveying system FIG. 1 for supplying toner material 12 in two developer stations 14a, 14b.
  • the toner conveying system 98 may be used in an electrophotographic printer or copier having two developer stations 14a, 14b, eg, in a printer or copier, in which a front and a back are simultaneously printed.
  • toner delivery system 98 may also be provided for feeding toner material into two developer stations disposed in two separate electrophotographic printers or copiers. In contrast to the toner delivery system FIG.
  • Duplicated elements in the toner conveying system 98 are denoted by the same reference numerals as in the toner conveying system of FIG. 1 but the letter a has been added for the elements belonging to the first developer station 14a and the letter b for the elements belonging to the developer station 14b.
  • the vacuum blower 46 generates a vacuum of about 70 millibars on the control valves 42a, 42b.
  • the control valves 42a, 42b respectively, the level of toner material 12 are controlled in the buffer 28a and 28b by regulating the suction air, wherein the buffers 28a, 28b supplied amount of toner material 12 is removed from the reservoir 16, as already in connection with FIG. 1 was explained.
  • a filter means 50a, 50b is provided which contains, for example, a coated polyester felt. The filter means 50a, 50b separates the toner material 12 from the aspirated toner material-air mixture.
  • the pipe system 26 contains a distribution piece 27, which divides the pipe system 26 into a pipe system 26a and into a pipe system 26b, toner material 12 being conveyed into the buffer 28a via the pipe system 26a and toner material 12 being fed into the buffer 28b via the pipe system 26b.
  • the quantity of toner material 12 fed to the respective developer station 14a, 14b is controlled by means of the metering device 34a, 34b in cooperation with the toner delivery tube 36a, 36b.
  • the opening on the underside of the toner delivery tube 36a, 36b in the region of the developer station 14a, 14b, as already mentioned, ensures uniform distribution of the toner material 12 in the respective developer station 14a, 14b.
  • the metering devices 34a, 34b each contain a paddle wheel 78a, 78b and are similar to the metering device according to FIGS Figures 2 and 3 built up. These arrangements of the paddlewheel scrape the buffer 28a air and toner impermeable to the delivery pipe 36a and the environment from.
  • FIG. 5 For example, a toner conveying system 100 similar to toner conveying system 98 is shown in FIG. 4 shown. However, in the toner conveying system 100, the toner supply container 16 is disposed for removal with the discharge opening at the top, and a dip tube 104 for withdrawing toner material 12 through the discharge opening into the toner reservoir 16 protrudes. With the aid of a receiving device 106, the reservoir 16 is inserted into a storage unit 110. The removal of toner material 12 from a reservoir 16 by means of a dip tube 104, as already mentioned in the introduction, in the documents EP-A 0311646 and US-A 4,999,064 described. Similar to the toner delivery system 98 after FIG.
  • toner material is conveyed from the storage container 16 into the intermediate storage devices 28a and 28b with the aid of negative pressure, ie with suction air.
  • the suction air is adjusted in accordance with a signal of the level sensors 30a, 30b and thereby the amount of the conveyed toner material 12 and / or the time in the toner material 12 is conveyed from the reservoir 16 in the latches 28a, 28b, controlled ,
  • a solenoid valve 112 is shown, for example, as the control valve 42 a and 42 b after the FIGS. 4 and 5 is used.
  • the solenoid valve 112 has an electromagnetic drive 114 which includes a coil, not shown, and an armature, not shown.
  • the solenoid valve 112 is in FIG. 6 shown in an open position, wherein a first valve plate 116 is pressed against a first valve seat 118 with activated magnetic drive 114.
  • the magnetic drive 114 is activated by means of a supply voltage of 24 V DC, which is supplied via terminals of the solenoid valve 112.
  • the pipe system 44 is connected to the pipe system 40 so that air from the pipe system 40 can flow into the pipe system 44 in the direction of the vacuum blower 46.
  • toner material 12 is conveyed from the reservoir 16 into the buffer 28.
  • the pipe systems 40, 44 are airtight with a Valve housing 120 connected.
  • the solenoid valve 112 includes a second valve plate 122 and a filter element 124, whose function is described below in connection with FIG. 8 will be explained in more detail.
  • the solenoid valve 112 is shown in a half-closed position. This position passes through the solenoid valve 112 when the supply voltage of 24 volts DC is turned off. In this case, the first valve plate 116 releases from the first valve seat 118, whereby an opening 126 is released next to the valve seat, through which, as indicated by the arrow P3, air flows into the pipe systems 40 and 44. The air flowing in causes a pressure equalization, so that in the pipe system 40 and 44 ambient pressure is set. Both the movement of the first valve plate 116 and the second valve plate 122 are guided by the armature of the solenoid valve 112, wherein the armature is pushed out of the drive 114 by means of a spring 114 arranged in the drive 114 and not shown. When applying the operating voltage of 24 volts DC, the armature is drawn into the drive 114, wherein the movement is directed against the spring force of the arranged in the drive 114 spring.
  • FIG. 8 the solenoid valve 112 is shown in a closed position.
  • the supply voltage of the solenoid valve 112 is turned off, so that the armature 128 is pushed out of the drive 114 so far that the first valve plate 116 presses against a second valve seat 130, wherein the second valve plate 122 presses on a third valve seat 132.
  • the first valve plate 116 closes the valve 112, whereby the pipe system 44 is separated from the pipe system 40 and no air from the pipe system 40 can be pulled into the pipe system 44.
  • the second valve plate 122 is in the in FIG. 8 shown closed position of the solenoid valve 112 by means of the spring 124 on the third valve seat 132 on the housing 120 of the solenoid valve 112 is pressed so that no air from the outside can flow into the housing 120 of the solenoid valve.
  • the vacuum blower 46 via the pipe system 44 at a closed position of the solenoid valves 42b, 42a via the other solenoid valve 42a, 42b suck in air and toner material 12 from the reservoir 16 in the respective associated latch 28a, 28b promote.
  • Toner material 12 is preferably sucked out of storage container 16 into intermediate storage 28 for two seconds, and subsequently the pipe system 40 is aerated for one second. Both for the transport of toner material 12 by means of suction air and for the described filter cleaning of the filter means 50, it is necessary that the pipe systems 44, 40, 26 and the elements connected to them are made airtight.
  • FIG. 15 is a diagram showing a control procedure for filling two latches 28a, 28b by a toner conveying system 98 or 100 after the first time FIGS. 4 or 5 shown.
  • the intermediate storage devices 28a and 28b are supplied with toner material 12 from the reservoir 16.
  • the level sensor 30a indicates that a preset level of toner material 12 has not been reached in the buffer 28a.
  • the valve 42a is activated and opened. Toner material 12 is conveyed from the reservoir 16 into the buffer 28a.
  • the so-called Saugtaktzeit the valve 42a is no longer energized, whereby the valve 42a is closed and, as already in connection with the FIGS. 6 to 8 For example, as the valve 42a closes, ambient air flows into the tubing 40a to clean the filter means 50a.
  • the level sensor 30b outputs a signal which has reached a preset level of toner material 12 in the intermediate memory 28b. However, while the valve 42a is being driven, the level sensor 30b detects that the preset level in the latch 28b is not reached and outputs a corresponding signal. After the valve 42a is closed, the valve 42b is activated and opened at the time t2. After a predetermined time of about two seconds, the valve 42b is no longer driven and closed. Between the end of the driving of the valve 42a and the beginning of the driving of the valve 42b, a predetermined time of about one second is waited, which is also referred to as dead time. During this time, the valve 42 a is closed, whereby, as already explained, ambient air can flow into the pipe system 40 a, 44.
  • the driving of the valve 42b is stopped. Thereafter, the valve 42b is closed.
  • the valve 42a is controlled again, since according to the signal of the level sensor 30a, a preset level has not yet been reached.
  • toner material 12 is repeatedly conveyed from the reservoir 16 into the buffer 28a.
  • the valve 42a is driven again at the time t4, whereupon the valve 42a is opened.
  • the valve 42a is closed again at time t5 and, as already explained, the filter medium 50 is cleaned again.
  • the level sensor 30a determines that the preset level has been reached. As a result, no toner material 12 is subsequently transported into the buffer memory 28a until the level sensor 30a again outputs a signal that the preset fill level has fallen below.
  • the valve 42b is further driven with multiple suction cycles until the level sensor 30b outputs a signal that a preset level has been reached.
  • the valve 42b is activated and opened for two seconds each time and is not actuated and closed for one second.
  • ambient air flows into the pipe system 40b.
  • the valve 42b between times t5 and t6; t7 and t8; t9 and t11 and between times t6 and t7; t8 and t9 not activated.
  • the level sensor 30b outputs a signal that the buffer memory 28b with toner material 12 is filled to the preset level, whereupon subsequently the valve 42b is not driven again until the level sensor 30b outputs a signal that the preset level is undershot.
  • the level sensor 30a outputs a signal that the filling level in the buffer 28a has been undershot.
  • the valve 42a is driven in the same way as previously the valve 42b, wherein the valve 42a between the two points t12 and t13; t14 and t15 is actuated and is not activated between times t13 and t14.
  • the valve 42a is thereby closed between the times t13 and t14 and after the time t15, whereby ambient air can flow into the pipe system 40a. Between time t14 and time t15, the level sensor 30a outputs a signal that the preset level has been reached. Thereafter, the valve 42a is not repeatedly driven. After the time t15, the valves 42a, 42b are not driven again until at least one level sensor 30a, 30b outputs a signal that one of the preset fill level limit values is undershot.
  • a dead time which has at least the same time duration as the fall time of the valve 112, 42a, 42b, is provided between every two activation cycles.
  • FIG. 10 a cross-section of the buffer 28 is shown.
  • the outer walls of the buffer 28 have air-permeable areas, which are arranged funnel-shaped down to the metering device 34 down.
  • the air-permeable areas 134, 136 are towards the ambient air hermetically sealed off, wherein the air flow through the areas 134, 136 through the air-permeable areas 134, 136 is adjustable via air supply lines 138, 140.
  • the amount of air introduced through the air feeds 138, 140 can be introduced, for example, by means of compressed air, or simply ambient air can flow in through the air feed lines when a negative pressure prevails in the intermediate store 28.
  • toner material 12 is conveyed from the storage container 16 into the intermediate storage 28.
  • the filter medium 50 separates the toner material-air mixture conveyed via the pipe system 26, wherein it only lets air pass to the clean air side, ie toward the pipe system 40, and the toner material 12 remains on the filter medium 50.
  • the filter medium 50 contains, for example, an air-permeable and toner-impermeable flow material and is connected to the housing of the buffer 28 in points 142, 144 in a toner-tight manner. With the aid of a holding device, the filter medium is held approximately in its central axis at the point 146, so that it can not fall on the intermediate storage 28 existing toner material 12.
  • a toner material-air mixture via the pipe system 26 is conveyed from the toner container 16.
  • the filter means 50 takes the position shown by a dashed line.
  • toner material 12 from the toner material-air mixture is fixed to the filter medium 50.
  • the through the pipe system 26 conveyed air flows through the filter means 50 on the filter clean air side into the pipe system 40.
  • not only the toner material-air mixture flows through the pipe system 26, but also air through the air-permeable areas 134, 136 of the buffer 28. This is in the buffer 28th produced with the toner material 12 therein a toner material-air mixture, which flows particularly easily into the metering device 34.
  • the filter means 50 is designed as a flexible filter cloth, in particular as a cloth or as a plastic fabric and attached sagging in the rest position.
  • the sag-mounted filter cloth 50 is whip-like moves and shakes off adhering toner material 12.
  • the toner material 12 is not mechanically stressed excessively, in particular the toner material is not crushed or rubbed against the walls or on the filter medium 50. This ensures that the mechanical and electrostatic properties of the toner material 12 are not changed.
  • maintenance-intensive mechanical devices for cleaning the filter medium 50 are largely dispensed with. As a result, this cleaning is also particularly cost feasible.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Dry Development In Electrophotography (AREA)
  • Centrifugal Separators (AREA)
  • Developing Agents For Electrophotography (AREA)
  • Cleaning In Electrography (AREA)
EP09176649A 2002-05-24 2003-05-21 Appareil et méthode de contrôle d'alimentation en toner dans une imprimante ou copieur electrophotographique Withdrawn EP2154580A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10223206A DE10223206A1 (de) 2002-05-24 2002-05-24 Vorrichtung und Verfahren zum Dosieren von Tonermaterial in einem elektrofotografischen Drucker oder Kopierer
EP03730085A EP1508075A2 (fr) 2002-05-24 2003-05-21 Dispositif et procede permettant de doser du toner dans un copieur ou une imprimante electrophotographique

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
EP03730085.2 Division 2003-05-21

Publications (1)

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EP2154580A2 true EP2154580A2 (fr) 2010-02-17

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EP03730085A Withdrawn EP1508075A2 (fr) 2002-05-24 2003-05-21 Dispositif et procede permettant de doser du toner dans un copieur ou une imprimante electrophotographique
EP09176649A Withdrawn EP2154580A2 (fr) 2002-05-24 2003-05-21 Appareil et méthode de contrôle d'alimentation en toner dans une imprimante ou copieur electrophotographique

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EP03730085A Withdrawn EP1508075A2 (fr) 2002-05-24 2003-05-21 Dispositif et procede permettant de doser du toner dans un copieur ou une imprimante electrophotographique

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US (2) US7561832B2 (fr)
EP (2) EP1508075A2 (fr)
DE (1) DE10223206A1 (fr)
WO (1) WO2003100527A2 (fr)

Families Citing this family (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10223231A1 (de) 2002-05-24 2003-12-24 Oce Printing Systems Gmbh Verfahren und Vorrichtung zum Fördern von Tonermaterial aus einem Vorratsbehälter
JP4801984B2 (ja) * 2005-12-07 2011-10-26 株式会社リコー 画像形成装置
DE102006017846B3 (de) 2006-04-18 2008-01-03 OCé PRINTING SYSTEMS GMBH Elektrografische Druckeinrichtung aus mindestens einem Druckwerk mit einer Mehrzahl von Entwicklerstationen
DE102006017847B3 (de) * 2006-04-18 2008-01-03 OCé PRINTING SYSTEMS GMBH Verfahren zur Versorgung von Entwicklerstationen mit Toner bei einer elektrografischen Druckeinrichtung
US7835653B2 (en) * 2006-05-25 2010-11-16 Ricoh Company, Limited Developing device and image forming apparatus
EP1923751A1 (fr) * 2006-11-16 2008-05-21 Punch Graphix International N.V. Alimentation pneumatique de toner
JP2008299217A (ja) 2007-06-01 2008-12-11 Ricoh Co Ltd 現像装置・画像形成装置
JP4954821B2 (ja) * 2007-07-27 2012-06-20 株式会社リコー 現像装置・画像形成装置
JP5332542B2 (ja) 2007-12-28 2013-11-06 株式会社リコー 粉体搬送装置及び画像形成装置
US8380102B2 (en) * 2010-05-28 2013-02-19 Lexmark International, Inc. Tubular skiving seal for a rotary toner metering mechanism
JP5836736B2 (ja) 2010-09-29 2015-12-24 キヤノン株式会社 現像剤補給容器、現像剤補給システム及び画像形成装置
DE102011119553A1 (de) 2011-11-26 2013-05-29 Georg Schneider Vorrichtung zum Auftragen von Material
DE102011119536A1 (de) 2011-11-26 2013-05-29 Georg Schneider Vorrichtung zum Auftragen von Material
DE102011119529A1 (de) 2011-11-26 2013-05-29 Georg Schneider Vorrichtung zum Auftragen von Material
WO2013075698A1 (fr) 2011-11-26 2013-05-30 Georg Schneider Système et procédé pour le revêtement au moins partiel d'au moins un objet
DE102011119530A1 (de) 2011-11-26 2013-05-29 Georg Schneider Vorrichtung und Verfahren zum Auftragen von Material
DE102011119537A1 (de) 2011-11-26 2013-05-29 Georg Schneider Vorrichtung zum Auftragen von Material
US8849162B2 (en) * 2011-12-30 2014-09-30 Lexmark International, Inc. Toner cartridge with pressure equalization system
US8768223B2 (en) 2011-12-30 2014-07-01 Lexmark International, Inc. Imaging apparatus assembly with pressure equalization
US20130279993A1 (en) * 2012-04-23 2013-10-24 Translogic Low impact station for pneumatic transport system
DE102013007482A1 (de) 2013-04-29 2014-10-30 Georg Schneider Vorrichtung zum Auftragen von Material
US9128412B2 (en) 2013-06-14 2015-09-08 Lexmark International, Inc. Venting system for a toner cartridge for use with an image forming device
CN110869193A (zh) * 2017-07-28 2020-03-06 惠普发展公司，有限责任合伙企业 利用气动输送的三维打印机
JP6972505B2 (ja) * 2018-03-19 2021-11-24 株式会社リコー 画像形成装置
US11921443B2 (en) * 2019-11-18 2024-03-05 Hewlett-Packard Development Company, L.P. Toner refill apparatus

Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2643032A (en) 1949-09-30 1953-06-23 Virkotype Corp Powder dispenser and distributor
US3231105A (en) 1963-12-02 1966-01-25 James G Brown Material conveying apparatus
US4277003A (en) 1978-09-19 1981-07-07 Minolta Camera Kabushiki Kaisha Developing material supplying device
EP0311646A1 (fr) 1986-10-02 1989-04-19 Siemens Ag Reservoir de toner multifonction pour imprimantes et copieurs non mecaniques.
EP0412923A2 (fr) 1989-08-11 1991-02-13 Lexmark International, Inc. Appareil à doser de toner
JPH03208066A (ja) 1990-01-09 1991-09-11 Canon Inc トナー補給装置
US5074342A (en) 1986-10-02 1991-12-24 Siemens Aktiengesellschaft Device for non-contaminating changing of a toner container in a toner conveying means of a non-mechanical printer or copier means
EP0494454A2 (fr) 1991-01-09 1992-07-15 Moore Business Forms, Inc. Appareil et méthode pour appliquer un toner non magnétique et non conducteur
US5201349A (en) 1987-09-10 1993-04-13 Siemens Aktiengesellschaft Device for pneumatically transferring toner from a transport container into a toner reservoir
US5727607A (en) 1995-01-26 1998-03-17 Ricoh Company, Ltd. Powder feeding method and apparatus for feeding powders with a fluid with increased precision
US5915154A (en) 1996-12-18 1999-06-22 Oce Printing Systems Gmbh Apparatus for conveying toner material from a reservoir
JPH11282238A (ja) 1998-03-30 1999-10-15 Ricoh Co Ltd トナー供給装置及びそれを使用する画像形成装置
US6229975B1 (en) 1996-10-15 2001-05-08 øCé PRINTING SYSTEMS GMBH Electrophotographic apparatus having a device for toner delivery

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1089412A (en) * 1965-06-02 1967-11-01 Arlside Ltd Reprographic apparatus
US4833501A (en) * 1986-03-14 1989-05-23 Siemens Aktiengesellschaft Apparatus and method for filling a toner reservoir by suction
JPS6421470A (en) * 1987-07-17 1989-01-24 Asahi Optical Co Ltd Toner replenishing device for electronic photographer
JPH0588427A (ja) * 1991-09-25 1993-04-09 Ricoh Co Ltd 画像形成装置
US5322535A (en) * 1993-08-31 1994-06-21 Diversitech Equipment & Sales (1984) Ltd. Pneumatic filter cleaning apparatus
US5430530A (en) * 1993-10-04 1995-07-04 Xerox Corporation Admix Housing
EP0858619B1 (fr) * 1995-10-31 1999-04-07 Océ Printing Systems GmbH Dispositif d'alimentation en toner pour l'etage de developpement d'un appareil d'impression ou d'un photocopieur
DE10223232B4 (de) * 2002-05-24 2004-06-03 OCé PRINTING SYSTEMS GMBH Verfahren und Vorrichtung zum Fördern von Tonermaterial aus einem Vorratsbehälter sowie zugehöriger Tonervorratsbehälter
JP3985753B2 (ja) * 2003-08-19 2007-10-03 コニカミノルタビジネステクノロジーズ株式会社 画像形成装置

Patent Citations (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2643032A (en) 1949-09-30 1953-06-23 Virkotype Corp Powder dispenser and distributor
US3231105A (en) 1963-12-02 1966-01-25 James G Brown Material conveying apparatus
US4277003A (en) 1978-09-19 1981-07-07 Minolta Camera Kabushiki Kaisha Developing material supplying device
US5074342A (en) 1986-10-02 1991-12-24 Siemens Aktiengesellschaft Device for non-contaminating changing of a toner container in a toner conveying means of a non-mechanical printer or copier means
EP0311646A1 (fr) 1986-10-02 1989-04-19 Siemens Ag Reservoir de toner multifonction pour imprimantes et copieurs non mecaniques.
US4990964A (en) 1986-10-02 1991-02-05 Siemens Aktiengesellschaft Toner delivery system having a multi-functional toner container for non-mechanical printer and copier means
US5201349A (en) 1987-09-10 1993-04-13 Siemens Aktiengesellschaft Device for pneumatically transferring toner from a transport container into a toner reservoir
EP0412923A2 (fr) 1989-08-11 1991-02-13 Lexmark International, Inc. Appareil à doser de toner
JPH03208066A (ja) 1990-01-09 1991-09-11 Canon Inc トナー補給装置
EP0494454A2 (fr) 1991-01-09 1992-07-15 Moore Business Forms, Inc. Appareil et méthode pour appliquer un toner non magnétique et non conducteur
US5727607A (en) 1995-01-26 1998-03-17 Ricoh Company, Ltd. Powder feeding method and apparatus for feeding powders with a fluid with increased precision
US6229975B1 (en) 1996-10-15 2001-05-08 øCé PRINTING SYSTEMS GMBH Electrophotographic apparatus having a device for toner delivery
US5915154A (en) 1996-12-18 1999-06-22 Oce Printing Systems Gmbh Apparatus for conveying toner material from a reservoir
JPH11282238A (ja) 1998-03-30 1999-10-15 Ricoh Co Ltd トナー供給装置及びそれを使用する画像形成装置

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WO2003100527A3 (fr) 2004-10-14
US20090245881A1 (en) 2009-10-01
WO2003100527A2 (fr) 2003-12-04
DE10223206A1 (de) 2003-12-11
US20050254861A1 (en) 2005-11-17
EP1508075A2 (fr) 2005-02-23
US7561832B2 (en) 2009-07-14
US7840166B2 (en) 2010-11-23

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