US3483679A - Filter apparatus - Google Patents

Filter apparatus Download PDF

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Publication number
US3483679A
US3483679A US606889A US3483679DA US3483679A US 3483679 A US3483679 A US 3483679A US 606889 A US606889 A US 606889A US 3483679D A US3483679D A US 3483679DA US 3483679 A US3483679 A US 3483679A
Authority
US
United States
Prior art keywords
filter bag
filter
xerographic
toner
flange
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.)
Expired - Lifetime
Application number
US606889A
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English (en)
Inventor
Hans H Balbierer
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.)
Xerox Corp
Original Assignee
Xerox Corp
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 Xerox Corp filed Critical Xerox Corp
Application granted granted Critical
Publication of US3483679A publication Critical patent/US3483679A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L9/00—Details or accessories of suction cleaners, e.g. mechanical means for controlling the suction or for effecting pulsating action; Storing devices specially adapted to suction cleaners or parts thereof; Carrying-vehicles specially adapted for suction cleaners
    • A47L9/10—Filters; Dust separators; Dust removal; Automatic exchange of filters
    • A47L9/14—Bags or the like; Rigid filtering receptacles; Attachment of, or closures for, bags or receptacles
    • A47L9/1427—Means for mounting or attaching bags or filtering receptacles in suction cleaners; Adapters
    • A47L9/1436—Connecting plates, e.g. collars, end closures
    • A47L9/1445—Connecting plates, e.g. collars, end closures with closure means
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L9/00—Details or accessories of suction cleaners, e.g. mechanical means for controlling the suction or for effecting pulsating action; Storing devices specially adapted to suction cleaners or parts thereof; Carrying-vehicles specially adapted for suction cleaners
    • A47L9/10—Filters; Dust separators; Dust removal; Automatic exchange of filters
    • A47L9/14—Bags or the like; Rigid filtering receptacles; Attachment of, or closures for, bags or receptacles
    • A47L9/1427—Means for mounting or attaching bags or filtering receptacles in suction cleaners; Adapters
    • A47L9/1436—Connecting plates, e.g. collars, end closures
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G21/00—Arrangements not provided for by groups G03G13/00 - G03G19/00, e.g. cleaning, elimination of residual charge
    • G03G21/10—Collecting or recycling waste developer
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S55/00—Gas separation
    • Y10S55/02—Vacuum cleaner bags
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S55/00—Gas separation
    • Y10S55/03—Vacuum cleaner

Definitions

  • this invention relates to a throwaway filter bag, having a combined closure valve and a mounting flange forming a handle portion to facilitate the insertion and removal of the filter bag from the suction cleaner.
  • a xerographic plate comprising a photoconductive insulating material on a conductive backing, is given a uniform electric charge over its surface and is then exposed to the subject matter to be reproduced, usually by conventional projection techniques. This exposure discharges the plate in accordance with the light intensity which reaches a plate thereby creating an electrostatic latent image on or in the plate surface.
  • Electrostatically attractable material which is generally a thermoplastic resin in the form of finely divided particles usually in the size range from 3 to microns, commonly referred to as toner or toner powder.
  • the toner powder is brought into surface contact with the photoconductive surface and it is held thereon electrostatically in a pattern corresponding to the electrostatic latent image.
  • the developed image is then transferred to a suitable support material, such as paper, and fused thereon to make a permanent image.
  • a suitable support material such as paper
  • substantially all of the resin material or toner powder is caused to adhere to the support material to form the images thereon, but usually a very small percentage of the resin material or toner remains on the xerographic plate.
  • the small quantity of resin material or toner powder remaining on the xerographic plate will affect future operating steps of the xerographic process and if left remaining thereon has an accumulative effect in that additional residual toner powder particles would adhere more readily to the xerographic plate in both image and non-image areas.
  • Patent No. 2,751,616 a rotating brush in peripheral contact with the surface of the xerographic plate to clean the photo-conductive surface of any residual resin material or toner powder adhering thereto.
  • the brush is positioned adjacent to a vacuum system, similar in structure to that of the common household vacuum cleaner, whereby the residual resin material or toner powder is entrained in air and then filtered from the air by a suitable filter device.
  • Another object of this invention is to improve xero graphic filtering apparatus by adapting the filter bag mounting apparatus to facilitate the insertion and re moval of the filter bag from the filtering apparatus.
  • FIG. 1 is a schematic illustration of a xerographic reproducing machine having a filter box and filter bag, constructed in accordance with one of the embodiments of the invention
  • FIG. 3 is a perspective view of the filter bag of FIG. 2 with the mounting flange removed to better illustrate the internal closure valve.
  • FIG. 1 an automatic xerographic reproducing machine including a xerographic plate 1 having a photoconductive layer or light receiving surface on a conductive backing, journaled in a frame to rotate in the direction indicated by the arrow to cause the plate surface sequentially to pass a plurality of xerographic processing stations.
  • the several xerographic processing stations in a path of movement of the plate surface may be described functionally, as follows:
  • the plate cleaning assembly comprises a rotatable brush 21 of such construction as to apply extremely light pressure to the photoconductive surface of the xerographic drum to dislodge any particles of re- J sidual resin or toner powder that may adhere thereto.
  • the brush 21 is mounted within a hood 22 encompassing approximately /4 of the brush area and is used for containing the particles of residual resin or toner powder removed from the drum by the brush.
  • a motor-driven centrifugal blower is connected by a suitable duct system to the hood 22 to draw air through the area surrounding the xerographic drum and the hood. This air will entrain particles of residual resin or toner powder removed from the xerographic drum by the brush. Residual resin or toner powder particles are separated from the air by a filter bag 30, to be described in detail hereinafter, so that toner free air reaches the motor-driven centrifugal blowers.
  • the filter is formed in the shape of a bag and it is positioned in an enlarged portion of the discharge duct, this enlarged portion being in the form of a filter box 29 having a removable panel or front cover for access into the interior of the filter box.
  • a duct is connected at one end to the discharge conduit in th back of hood 22, and at its other end the duct is connected by an appropriate adapter with an aperture in the filter box.
  • Manifold outlet conduits of the filter box 29 are connected to the inlets of the motordriven centrifugal blower.
  • the filter bag 30 is formed with an inner wall of glass wool fibers (fiber glass) loosely assembled into a web or mat of progressive density and an outer wall of loosely assembled glass wool fibers into a web or mat of substantially uniform density to form a self sustaining structure.
  • glass wool fibers fiber glass
  • the filter bag 30 is constructed whereby the flow of air, contain the particles of residual resin or toner powder, travels through the filtering medium of progressively increasing density and then through a filtering medium of substantially uniform density, the filtering media being a loosely assembed web or mat of fiber glass.
  • a single mat of fiber glass having, in cross section, an area of progressive density and then an area of uniform density may be used in fabricating the filter bag or, as shown, the filter bag may be formed from two mats of fiber glass, a flat blank fiber glass mat material of progressive density to form the inner walls of the filter bag and a flat blank of fiber glass mat material of substantially uniform density to form the outer wall of the filter bag, the denser side of the blank being positioned adjacent the surface of the uniform density blank.
  • Both of the blanks are cut to form an inlet aperture and have an apertured inner flange 42 secured to the inner surface of the inner blank, for example, by a staple in each corner, the stapling being done from the inner side of the blank.
  • An outer apertured bearing flange 43 is secured to the outer surface of the outer blank. Both flanges 42 and 43, made for example, of cardboard or other stiff material, are positioned with the openings in the gasket in alignment with the inlet passage of the blanks.
  • An apertured compressible gasket 44 is secured as by cement to the top of outer bearing flange 43.
  • the compressible gasket 44 has an opening 45 in one side for a purpose to be hereinafter described in detail.
  • a closure valve 46 is slidably positioned within the aperture of compressible gasket 44 and is adapted to be moved into interference between the apertures of the filter bag and flanges, to form a closure thereof to contain the contents of the filter bag therein when the bag is being removed from the filter box 29.
  • a cord 47 is secured at one end to the closure valve 46 and at the other end to a suitable spool to allow the closure valve to be drawn between the apertures prior to removal of the filter bag from the filter box 22.
  • An apertured mounting flange 48 made for example, of the same material as flange 43, is secured as by cement on top of the compressible gasket 44.
  • the flanges 44 and 48 are substantially rectangular in the form shown in FIGS.
  • the assembled filter bag 39 is mounted in the filter box, whereby the filter bag is seated against the upper wall of the filter box with the filter media extending downstream.
  • the top wall of the filter box which has an opening forming the discharge opening from the hood 22 into the filter box, is formed with an apertured compressible gasket 28 axially aligned with the opening, to
  • the bag may be replaced by drawing on the cord 47 to slide the closure valve 46 into interference with the normal path of aeriform fluid passing from the duct into the filter bag to thereby contain the contents within the bag, and grasping the handle 53 to pull the bag from the slides 26 and 27.
  • bearing flange being constructed of a relatively stifl material which is secured to said filter bag so the aperture therein is axially aligned with the filter bag inlet opening;
  • said mounting flange and said bearing flange being wider than said second compressible gasket and together with said second gasket form a pair of grooves, each of said grooves receiving in tight slidable relation therein a respective one of said inwardly turned support flanges wherein pressure is exerted on said first compressible gasket by said mounting flange and a toner tight seal is formed between said mount- 3 ing flange and said top wall;

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • Sustainable Development (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Filtering Of Dispersed Particles In Gases (AREA)
  • Cleaning In Electrography (AREA)
US606889A 1967-01-03 1967-01-03 Filter apparatus Expired - Lifetime US3483679A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US60688967A 1967-01-03 1967-01-03

Publications (1)

Publication Number Publication Date
US3483679A true US3483679A (en) 1969-12-16

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
US606889A Expired - Lifetime US3483679A (en) 1967-01-03 1967-01-03 Filter apparatus

Country Status (5)

Country Link
US (1) US3483679A (de)
BE (1) BE708648A (de)
DE (1) DE1607748A1 (de)
FR (1) FR1552363A (de)
NL (1) NL6800006A (de)

Cited By (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3793986A (en) * 1971-06-11 1974-02-26 S Latone Toner reclaiming system for electrostatic printing machines
US3838922A (en) * 1971-12-30 1974-10-01 Xerox Corp Apparatus for sensing the quantity of reclaimed developer material
US3850521A (en) * 1973-05-30 1974-11-26 Kalle Ag Electrophotographic copying apparatus
US3942889A (en) * 1973-03-05 1976-03-09 Minolta Camera Kabushiki Kaisha Residual toner removing apparatus
US3969785A (en) * 1973-05-08 1976-07-20 Minolta Camera Kabushiki Kaisha Residual toner removing apparatus
JPS536234U (de) * 1977-04-29 1978-01-20
US4142269A (en) * 1977-02-16 1979-03-06 Siemens Aktiengesellschaft Cleaning device
US4230406A (en) * 1979-03-26 1980-10-28 Xerox Corporation Cleaning system for an electrostatic copier
JPS55178158U (de) * 1979-06-08 1980-12-20
US4251155A (en) * 1978-04-22 1981-02-17 Agfa-Gevaert, A.G. Cleaning arrangement in an electrophotographic copying machine
US4257791A (en) * 1976-12-21 1981-03-24 Lydall, Inc. Filter
JPS58127960U (ja) * 1982-02-24 1983-08-30 三菱電機株式会社 電気掃除機
JPS58127962U (ja) * 1982-02-25 1983-08-30 三菱電機株式会社 電気掃除機
US4680040A (en) * 1986-01-17 1987-07-14 Xerox Corporation Multipurpose filtering material
DE3921806A1 (de) * 1989-07-03 1991-01-10 S L Copiersysteme Gmbh Trockenkopiergeraet
US5158635A (en) * 1990-02-01 1992-10-27 Branofilter Gmbh Method for the manufacture of a connection member for filter bags
US5472460A (en) * 1993-11-18 1995-12-05 Branofilter Gmbh Filter bag for vacuum cleaners
US5472465A (en) * 1993-11-18 1995-12-05 Branofilter Gmbh Filter bag for a vacuum cleaner
US5820643A (en) * 1994-05-02 1998-10-13 Lienenlueke; Paul Dust filter bag for a vacuum cleaner
US20050047807A1 (en) * 2003-08-25 2005-03-03 Cook William Paul Method and apparatus to control waste toner collection in an image forming apparatus
US20050212472A1 (en) * 2004-03-24 2005-09-29 Chapman Danny K Method and apparatus for time-based dc motor commutation
US20070065196A1 (en) * 2005-09-22 2007-03-22 Lexmark International, Inc. Device for moving toner within an image forming device
US8836747B2 (en) 2012-10-02 2014-09-16 Lexmark International, Inc. Motor control system and method for a laser scanning unit of an imaging apparatus
US9523947B2 (en) 2012-09-26 2016-12-20 Lexmark International, Inc. Time-based commutation method and system for controlling a fuser assembly
US20190335967A1 (en) * 2018-05-04 2019-11-07 Irobot Corporation Filtering devices for evacuation stations

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3833799C2 (de) * 1988-10-05 1994-10-06 Licentia Gmbh Staubsauger mit einem Filter
DE9201802U1 (de) * 1992-02-13 1992-04-02 Wolfgang B. Schroeter GmbH, 4973 Vlotho Filtereinrichtung für einen Staubsauger

Citations (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2079896A (en) * 1930-08-05 1937-05-11 Edgar E Brosius Valve
US2218169A (en) * 1937-03-20 1940-10-15 Hoover Co Suction cleaner
US2590235A (en) * 1945-09-22 1952-03-25 Electrolux Corp Vacuum cleaner
US2721625A (en) * 1953-08-26 1955-10-25 Henney Motor Company Inc Canister type suction cleaner
US2752002A (en) * 1955-03-16 1956-06-26 Julius P Wied Disposable dust bag for vacuum cleaner
US2804167A (en) * 1955-03-01 1957-08-27 Hoover Co Suction cleaner filter bags
US2805836A (en) * 1954-08-20 1957-09-10 Beaumont Birch Company Cut-off gate construction
US2864462A (en) * 1954-01-07 1958-12-16 Hoover Co Disposable filter bag for suction cleaners
US3047006A (en) * 1959-08-24 1962-07-31 Sherman T Transeau R D Self-cleaning cut-off gate construction
US3197118A (en) * 1963-05-17 1965-07-27 Carl E Meyerhoefer End construction for multi-gusset bag
GB1021076A (en) * 1963-12-04 1966-02-23 Philips Nv Improvements in or relating to vacuum cleaners
US3238706A (en) * 1962-08-14 1966-03-08 Hoover Co Suction cleaners
US3252274A (en) * 1962-08-01 1966-05-24 Xerox Corp Xerographic powder filter
US3260038A (en) * 1962-10-16 1966-07-12 Claude E Casady Receptacle and interlocking resilient flange support means therefor
US3410060A (en) * 1964-09-30 1968-11-12 Xerox Corp Xerographic filter apparatus

Patent Citations (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2079896A (en) * 1930-08-05 1937-05-11 Edgar E Brosius Valve
US2218169A (en) * 1937-03-20 1940-10-15 Hoover Co Suction cleaner
US2590235A (en) * 1945-09-22 1952-03-25 Electrolux Corp Vacuum cleaner
US2721625A (en) * 1953-08-26 1955-10-25 Henney Motor Company Inc Canister type suction cleaner
US2864462A (en) * 1954-01-07 1958-12-16 Hoover Co Disposable filter bag for suction cleaners
US2805836A (en) * 1954-08-20 1957-09-10 Beaumont Birch Company Cut-off gate construction
US2804167A (en) * 1955-03-01 1957-08-27 Hoover Co Suction cleaner filter bags
US2752002A (en) * 1955-03-16 1956-06-26 Julius P Wied Disposable dust bag for vacuum cleaner
US3047006A (en) * 1959-08-24 1962-07-31 Sherman T Transeau R D Self-cleaning cut-off gate construction
US3252274A (en) * 1962-08-01 1966-05-24 Xerox Corp Xerographic powder filter
US3238706A (en) * 1962-08-14 1966-03-08 Hoover Co Suction cleaners
US3260038A (en) * 1962-10-16 1966-07-12 Claude E Casady Receptacle and interlocking resilient flange support means therefor
US3197118A (en) * 1963-05-17 1965-07-27 Carl E Meyerhoefer End construction for multi-gusset bag
GB1021076A (en) * 1963-12-04 1966-02-23 Philips Nv Improvements in or relating to vacuum cleaners
US3410060A (en) * 1964-09-30 1968-11-12 Xerox Corp Xerographic filter apparatus

Cited By (32)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3793986A (en) * 1971-06-11 1974-02-26 S Latone Toner reclaiming system for electrostatic printing machines
US3838922A (en) * 1971-12-30 1974-10-01 Xerox Corp Apparatus for sensing the quantity of reclaimed developer material
US3942889A (en) * 1973-03-05 1976-03-09 Minolta Camera Kabushiki Kaisha Residual toner removing apparatus
US3969785A (en) * 1973-05-08 1976-07-20 Minolta Camera Kabushiki Kaisha Residual toner removing apparatus
US3850521A (en) * 1973-05-30 1974-11-26 Kalle Ag Electrophotographic copying apparatus
US4257791A (en) * 1976-12-21 1981-03-24 Lydall, Inc. Filter
US4142269A (en) * 1977-02-16 1979-03-06 Siemens Aktiengesellschaft Cleaning device
JPS536234U (de) * 1977-04-29 1978-01-20
US4251155A (en) * 1978-04-22 1981-02-17 Agfa-Gevaert, A.G. Cleaning arrangement in an electrophotographic copying machine
US4230406A (en) * 1979-03-26 1980-10-28 Xerox Corporation Cleaning system for an electrostatic copier
JPS55178158U (de) * 1979-06-08 1980-12-20
JPS6326826Y2 (de) * 1979-06-08 1988-07-20
JPS58127960U (ja) * 1982-02-24 1983-08-30 三菱電機株式会社 電気掃除機
JPS58127962U (ja) * 1982-02-25 1983-08-30 三菱電機株式会社 電気掃除機
JPS6324850Y2 (de) * 1982-02-25 1988-07-07
US4680040A (en) * 1986-01-17 1987-07-14 Xerox Corporation Multipurpose filtering material
DE3921806A1 (de) * 1989-07-03 1991-01-10 S L Copiersysteme Gmbh Trockenkopiergeraet
US5158635A (en) * 1990-02-01 1992-10-27 Branofilter Gmbh Method for the manufacture of a connection member for filter bags
US5472460A (en) * 1993-11-18 1995-12-05 Branofilter Gmbh Filter bag for vacuum cleaners
US5472465A (en) * 1993-11-18 1995-12-05 Branofilter Gmbh Filter bag for a vacuum cleaner
US5820643A (en) * 1994-05-02 1998-10-13 Lienenlueke; Paul Dust filter bag for a vacuum cleaner
US7085507B2 (en) 2003-08-25 2006-08-01 Lexmark International, Inc. Method and apparatus to control waste toner collection in an image forming apparatus
US20050047807A1 (en) * 2003-08-25 2005-03-03 Cook William Paul Method and apparatus to control waste toner collection in an image forming apparatus
US20050212472A1 (en) * 2004-03-24 2005-09-29 Chapman Danny K Method and apparatus for time-based dc motor commutation
US7205738B2 (en) 2004-03-24 2007-04-17 Lexmark International, Inc. Method and apparatus for time-based dc motor commutation
US20070065196A1 (en) * 2005-09-22 2007-03-22 Lexmark International, Inc. Device for moving toner within an image forming device
US7257363B2 (en) 2005-09-22 2007-08-14 Lexmark International, Inc. Device for moving toner within an image forming device
US9523947B2 (en) 2012-09-26 2016-12-20 Lexmark International, Inc. Time-based commutation method and system for controlling a fuser assembly
US8836747B2 (en) 2012-10-02 2014-09-16 Lexmark International, Inc. Motor control system and method for a laser scanning unit of an imaging apparatus
US20190335967A1 (en) * 2018-05-04 2019-11-07 Irobot Corporation Filtering devices for evacuation stations
US10842334B2 (en) * 2018-05-04 2020-11-24 Irobot Corporation Filtering devices for evacuation stations
US11812918B2 (en) 2018-05-04 2023-11-14 Irobot Corporation Filtering devices for evacuation stations

Also Published As

Publication number Publication date
FR1552363A (de) 1969-01-03
NL6800006A (de) 1968-07-04
DE1607748A1 (de) 1970-09-17
BE708648A (de) 1968-06-28

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