EP0332669A1 - Vorrichtung zum pneumatischen einfüllen von toner aus einem transportbehälter in einen tonervorratsbehälter - Google Patents
Vorrichtung zum pneumatischen einfüllen von toner aus einem transportbehälter in einen tonervorratsbehälterInfo
- Publication number
- EP0332669A1 EP0332669A1 EP88907106A EP88907106A EP0332669A1 EP 0332669 A1 EP0332669 A1 EP 0332669A1 EP 88907106 A EP88907106 A EP 88907106A EP 88907106 A EP88907106 A EP 88907106A EP 0332669 A1 EP0332669 A1 EP 0332669A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- toner
- chamber
- filter
- scraping
- settling
- 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
Links
- 238000007790 scraping Methods 0.000 claims abstract description 18
- 238000007639 printing Methods 0.000 claims abstract description 4
- 239000004744 fabric Substances 0.000 claims description 2
- 239000000463 material Substances 0.000 claims description 2
- 238000001914 filtration Methods 0.000 abstract 2
- 230000032258 transport Effects 0.000 description 9
- 239000006260 foam Substances 0.000 description 6
- 238000009826 distribution Methods 0.000 description 3
- 239000000203 mixture Substances 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 241001674044 Blattodea Species 0.000 description 1
- 229910000639 Spring steel Inorganic materials 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 238000004040 coloring Methods 0.000 description 1
- 238000007596 consolidation process Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005294 ferromagnetic effect Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000005291 magnetic effect Effects 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 238000009827 uniform distribution Methods 0.000 description 1
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
- G03G15/06—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
- G03G15/0881—Sealing of developer cartridges
- G03G15/0886—Sealing of developer cartridges by mechanical means, e.g. shutter, plug
-
- 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
- G03G15/0865—Arrangements for supplying new developer
- G03G15/0875—Arrangements for supplying new developer cartridges having a box like shape
-
- 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
Definitions
- the invention relates to a device for the pneumatic filling of toner from a transport container into a toner storage container according to the preamble of patent claim 1.
- charge images are recorded on a recording medium e.g. generated with a photoconductor drum or directly on special paper and then colored with a black powder (toner) in a developer station.
- a recording medium e.g. generated with a photoconductor drum or directly on special paper and then colored with a black powder (toner) in a developer station.
- this toner image is then transferred to normal paper and fixed on it.
- a two-component developer consisting of ferromagnetic carrier particles and toner particles is used for development.
- the developer is guided past the charge image on the intermediate carrier by means of a magnetic brush arrangement, to which the toner sticks due to electrostatic forces.
- An electrophotographic copier that develops charge images according to the specified principle is e.g. known from DE-AS 21 66 667.
- the toner concentration in the developer mixture of the developer station decreases continuously. It is therefore necessary to continuously add new toner to the developer mixture. Since the toner consumption per unit of time is very high in the case of fast copiers and high-performance data printers, a spacious toner reservoir is used in such devices in order to avoid downtimes by refilling the toner. When this toner reservoir is empty, the toner that is usually supplied in handy containers, filled in the storage container. It is important to fill the toner from the container into the storage container so that no toner is spilled, thereby polluting the environment.
- Such a toner filling device is e.g. known from DE-PS 32 24 296.
- the object of the invention is to design a device of the type mentioned in such a way that the toner can be transferred from a simple, inexpensive transport container into a device-side storage container with a large capacity without toner consolidation occurring or the toner being spilled. This object is achieved in a device of the type mentioned at the outset according to the characterizing part of the first claim.
- the toner is removed from a transport container, namely the toner bottle, via a flexible line by means of negative pressure by suction, via the flexible line the toner reaches a storage container which is divided into a settling space and a suction space separated from the settling space.
- the suction chamber is connected to a vacuum pump which generates a vacuum, whereupon the toner settles on the filter of the sedimentation chamber.
- the toner attached to the filter device is released and it falls to the bottom of the settling space in that there is a metering device which supplies the toner in metered form to the developer station of the printer.
- the metering device contains at least one metering roller made of foam-like material, which transports the toner from the settling space into the developer station.
- the toner cannot clump together because the toner is not mechanically compressed.
- the filter device itself advantageously consists of a grid-shaped carrier part and a filter fabric connected to the carrier part, wherein the carrier part can consist of plastic which has a plurality of openings which can be arranged in such a way that a uniform Distribution of the toner in the reservoir results.
- the carrier part takes on the function of a pressure distribution plate.
- the toner cannot clump together because the toner is not mechanically compressed.
- FIG. 1 shows a schematic representation of a device for filling toner from a transport container into a toner storage container, partly in a sectional view
- FIG 3 shows a schematic sectional view of the filling device with an associated metering device.
- a toner reservoir 10 from which the toner is fed to a developer station 11 for developing charge images.
- the toner reservoir 10 has approximately the width of the developer station 11, which corresponds approximately to the printing width, and is divided into a settling chamber 12 and a suction chamber 13.
- the rooms are separated from one another by a filter device 14.
- the filter device 14 is closed with respect to the suction chamber 13 by a grid-shaped support part 15 with a plurality of openings 16 arranged thereon.
- the actual toner-tight filter 17 Connected to the grid-shaped carrier part 15 is the actual toner-tight filter 17, which e.g. can consist of a glass mat. This filter 17 is sealed by foam strips on the edges.
- the openings of the grid-shaped carrier part 15, which is preferably made of plastic, can be arranged and dimensioned in accordance with the desired pressure distribution of the suction air.
- the suction chamber 13 is connected to a vacuum pump 19 operated by an electric motor.
- the settling chamber 12 in turn has a connecting piece 20 to which a flexible pipe 21 in the form of a suction nozzle is connected.
- the flexible nozzle-shaped suction line 21 is inserted with its suction nozzle 24 into the toner bottle 22 and the suction pump 19 is then actuated.
- the negative pressure generated in the suction chamber 13, which acts uniformly through the openings 16 of the grid-shaped carrier part 15, generates a corresponding negative pressure in the settling chamber 12, as a result of which the toner 23 is sucked into the settling chamber 12 according to the "vacuum cleaner principle".
- the toner settles underneath the filter device 14, namely uniformly over the entire width of the toner supply container.
- a motor-driven scraping device is arranged in the settling chamber 12, which scrapes the toner attached to the filter device 14 via scraping elements 28.
- the toner falls into the lower, conical region 25 of the settling space (FIG. 2) and is deposited there.
- a metering device driven by a motor 26 in the form of a foam roller 27 (FIG. 3).
- the circumference of this foam roller grazes at the lower edge of the conically tapering settling space 25 and, depending on a fill level measuring device (not shown here), transports toner 23 to the developer station 11.
- two foam rollers arranged side by side can also be provided as metering devices which are driven in opposite directions, the toner then being fed between the rollers to the developer station.
- the drive of the metering device is coupled via a belt 29 to an axis 30 of the scraping device.
- the scraping device itself has a multiplicity of elastic scraping elements 28 made of spring steel wire, which are fastened to the axis 30 of the scraping device via fastening disks 31. Due to their bending shape, the scraping elements 28 rest lightly and resiliently on the filter mat 17 and thus scrape off the adhering toner during a rotational movement.
- the filter mat 17 can be welded to the grid-shaped carrier part made of plastic, wherein the grid-shaped carrier part 15 can form a replacement part together with the filter mat 17. The arrangement of the grid part 15 and the filter mat 17 is placed on the settling space 12 in an airtight manner.
- an inlet opening 32 which can be adapted in an airtight manner with the corresponding opening 20 of the suction nozzle 21 and which forms the passage to the suction chamber 12.
- the scraper elements 28 designed as a rotary cockroach can be glued and / or soldered to the fastening disks 31 connected to the axis 30.
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Dry Development In Electrophotography (AREA)
- Basic Packing Technique (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19873730454 DE3730454A1 (de) | 1987-09-10 | 1987-09-10 | Vorrichtung zum pneumatischen einfuellen von toner aus einem transportbehaelter in einen tonervorratsbehaelter |
DE3730454 | 1987-09-10 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0332669A1 true EP0332669A1 (de) | 1989-09-20 |
EP0332669B1 EP0332669B1 (de) | 1992-11-11 |
Family
ID=6335732
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP88907106A Expired - Lifetime EP0332669B1 (de) | 1987-09-10 | 1988-08-05 | Vorrichtung zum pneumatischen einfüllen von toner aus einem transportbehälter in einen tonervorratsbehälter |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0332669B1 (de) |
JP (1) | JP2632993B2 (de) |
DE (2) | DE3730454A1 (de) |
WO (1) | WO1989002616A1 (de) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
IES940660A2 (en) * | 1994-08-23 | 1996-01-24 | Faircove Systems | Improvements in and relating to dispensing apparatus |
JP3483087B2 (ja) * | 1995-04-14 | 2004-01-06 | 株式会社リコー | 画像形成システム |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4029047A (en) * | 1975-10-28 | 1977-06-14 | Xerox Corporation | Toner handling system |
US4833501A (en) * | 1986-03-14 | 1989-05-23 | Siemens Aktiengesellschaft | Apparatus and method for filling a toner reservoir by suction |
-
1987
- 1987-09-10 DE DE19873730454 patent/DE3730454A1/de not_active Withdrawn
-
1988
- 1988-08-05 DE DE8888907106T patent/DE3875954D1/de not_active Expired - Lifetime
- 1988-08-05 WO PCT/DE1988/000486 patent/WO1989002616A1/de active IP Right Grant
- 1988-08-05 EP EP88907106A patent/EP0332669B1/de not_active Expired - Lifetime
- 1988-08-05 JP JP50666888A patent/JP2632993B2/ja not_active Expired - Fee Related
Non-Patent Citations (1)
Title |
---|
See references of WO8902616A1 * |
Also Published As
Publication number | Publication date |
---|---|
JPH03501296A (ja) | 1991-03-22 |
EP0332669B1 (de) | 1992-11-11 |
WO1989002616A1 (en) | 1989-03-23 |
DE3730454A1 (de) | 1989-03-30 |
JP2632993B2 (ja) | 1997-07-23 |
DE3875954D1 (de) | 1992-12-17 |
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