US3836054A - Toner dispensing apparatus - Google Patents

Toner dispensing apparatus Download PDF

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Publication number
US3836054A
US3836054A US00298815A US29881572A US3836054A US 3836054 A US3836054 A US 3836054A US 00298815 A US00298815 A US 00298815A US 29881572 A US29881572 A US 29881572A US 3836054 A US3836054 A US 3836054A
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US
United States
Prior art keywords
toner
nip
rollers
roller
grooves
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
US00298815A
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English (en)
Inventor
K Schon
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Individual
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Individual
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Filing date
Publication date
Application filed by Individual filed Critical Individual
Application granted granted Critical
Publication of US3836054A publication Critical patent/US3836054A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • 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
    • 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
    • Y10S222/00—Dispensing
    • Y10S222/01—Xerography

Definitions

  • a toner dispensing apparatus including a toner Supply 51 1111.01.
  • This invention relates to a toner dispensing apparatus.
  • toner is continuously used up in making the copies.
  • the images become faint after varying periods of time. This has proved particularly troublesome in the case of high-speed machines, and it has therefore been necessary to provide apparatus for dispensing further amounts of toner.
  • the present invention provides a toner dispensing apparatus including a supply container for the toner, which container has at its lower end a discharge opening obturated by two parallel rollers forming a nip but adapted to rotate in the same direction, the roller arranged to move upward at the nip having a smooth surface and the roller arranged to move downward at the nip having a right hand and a left hand helical groove for transporting toner from the supply container,
  • the apparatus of the invention is suitable for use with various types of toner, is reliable and accurate in operation and in particular prevents bridging.
  • the two parallel rollers may be in contact with one another or separated by a very narrow gap corresponding to the average diameter of the toner particles.
  • FIG. 1 is a diagrammatic section through a toner dispensing apparatus
  • FIG. 2 is a plan view of one of the rollers of FIG. 1.
  • toner material 1 is accommodated in a supply container which is bounded by vertical walls 2.
  • a discharge opening 3 at the lower end of the supply container is obturated by two rollers 4 and 5 arranged to form a nip through which toner passes and which, with the aid of a drive means, not illustrated, can be rotated in the same direction as shown by the arrows.
  • a stripping felt 6 is fitted as shown to one of the walls 2 of the supply container. The stripping felt 6 is provided to prevent the roller 5, which near the wall 2 of the container rotates away from the container, from entraining small particles of toner.
  • Below the two rollers 4 and 5 is a brush roller 7 which can be caused to rotate in the same direction as the rollers 4 and 5 by a drive likewise.
  • the roller 5 is made of smooth polished hardchromium plated steel, whereas the roller 4 has dispensing grooves as shown in FIG. 2.
  • the toner dispensing roller 4 has a right-hand and a left-hand helical groove 8, the two grooves crossing each other.
  • the pitch of each of the helical grooves corresponds to the diameter of the roller.
  • the rollers 4, 5 and 7 are either rotated continuously, or their rotation is intermittent and controlled by a signal which is sent by a device, not illustrated, when a certain quantity of toner has been used up, i.e., when a certain degree of toner-impoverishment occurs.
  • the roller 4, in its rotation, entrains toner in its helical grooves. Since the grooves 8 are opposite helices, rotation of the toner dispensing roller 4 does not cause the toner to be carried towards either of its ends, owing to the fact that portions of the grooves constantly move to the left and to the right within the supply container. It has been found that this principle results in reliable and trouble-free dispensing of toner.
  • the brush roller 7 sweeps out the grooves in the dispensing roller 4 and enables the dispensed toner material to fall freely, for example into a developer tank of an electrophotographic reproduction machine, which tank is located below the apparatus illustrated in FIG. 1.
  • a common drive means may be used, which rotates the nip rollers at the same speed and the brush roller in excess of that speed, e.g., at twice that speed.
  • a toner dispenser including a supply container for the toner dispenser, said container having at its lower end a discharge opening obturated by two parallel rollers at the terminus of the discharge passage forming a nip to receive toner by gravity through the discharge outlet and generally horizontal for rotation,
  • the roller arranged to move upward at the nip having a smooth surface and the roller arranged to move downward at the nip having a right hand and a left hand helical groove of sufficient depth to receive said toner extending across the length of the discharge passage which is obturated by the rollers on exposure to the discharge outlet for transporting toner from the supply container,
  • said roller arranged to move downwardly having a smooth surface except for said grooves, and means being provided below the nip for removing toner from said grooves.
  • toner removal means is a brush roller rotatable in the same direction as the nip rollers and of which the brush means makes contact with both nip rollers.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Dry Development In Electrophotography (AREA)
US00298815A 1971-10-22 1972-10-19 Toner dispensing apparatus Expired - Lifetime US3836054A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2152592A DE2152592C3 (de) 1971-10-22 1971-10-22 Tonernachdosiereinrichtung in einer elektrophotographischen Entwicklungsvorrichtung

Publications (1)

Publication Number Publication Date
US3836054A true US3836054A (en) 1974-09-17

Family

ID=5823060

Family Applications (1)

Application Number Title Priority Date Filing Date
US00298815A Expired - Lifetime US3836054A (en) 1971-10-22 1972-10-19 Toner dispensing apparatus

Country Status (6)

Country Link
US (1) US3836054A (xx)
JP (1) JPS4851643A (xx)
DE (1) DE2152592C3 (xx)
FR (1) FR2157604A5 (xx)
GB (1) GB1383358A (xx)
NL (1) NL7213806A (xx)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4595128A (en) * 1985-03-28 1986-06-17 Christy Machine Company Apparatus for dispensing and distributing moist, self-adhering and compactible materials
US5516011A (en) * 1994-08-01 1996-05-14 Christy Machine Company Roller dispenser machine
US20090185838A1 (en) * 2008-01-23 2009-07-23 Seiko Epson Corporation Method of Manufacturing Toner Carrier Roller, Developer Apparatus, and Image Forming Apparatus
US20220241868A1 (en) * 2019-07-16 2022-08-04 Sandvik Machining Solutions Ab Powder dispensing apparatus

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS507043U (xx) * 1973-05-18 1975-01-24
JPS5050038U (xx) * 1973-09-05 1975-05-16
JPS54343U (xx) * 1977-06-02 1979-01-05
JPS5921395Y2 (ja) * 1978-04-19 1984-06-23 コニカ株式会社 静電荷像現像用トナ−の補給装置
US4513918A (en) * 1982-11-12 1985-04-30 Jeno's, Inc. Dispensing apparatus

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE185913C (xx) *
US2321082A (en) * 1939-04-29 1943-06-08 Carbide & Carbon Chem Corp Feeding and distributing mechanism
US3376854A (en) * 1966-06-01 1968-04-09 Xerox Corp Automatic toner dispensing control
DE1271036B (de) * 1965-06-09 1968-06-20 Slobodan Koncar Djurdjevic Dr Vorrichtung zum kontinuierlichen Ein- und Ausschleusen stueckiger, koerniger oder pulverfoermiger Materialien in bzw. aus abgeschlossenen Raeumen
DE1473211A1 (de) * 1963-05-28 1968-10-31 T. & T. Vicars Ltd., Newton-le-Willows, Lancashire (Großbritannien) Vorrichtung zum Abmessen einer Substanz, wie eines Fett-Mehl-Gemisches
US3637112A (en) * 1967-04-26 1972-01-25 Daniel Lamar Christy Machine for dispensing and distributing dry flowable materials

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE185913C (xx) *
US2321082A (en) * 1939-04-29 1943-06-08 Carbide & Carbon Chem Corp Feeding and distributing mechanism
DE1473211A1 (de) * 1963-05-28 1968-10-31 T. & T. Vicars Ltd., Newton-le-Willows, Lancashire (Großbritannien) Vorrichtung zum Abmessen einer Substanz, wie eines Fett-Mehl-Gemisches
DE1271036B (de) * 1965-06-09 1968-06-20 Slobodan Koncar Djurdjevic Dr Vorrichtung zum kontinuierlichen Ein- und Ausschleusen stueckiger, koerniger oder pulverfoermiger Materialien in bzw. aus abgeschlossenen Raeumen
US3376854A (en) * 1966-06-01 1968-04-09 Xerox Corp Automatic toner dispensing control
US3637112A (en) * 1967-04-26 1972-01-25 Daniel Lamar Christy Machine for dispensing and distributing dry flowable materials

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4595128A (en) * 1985-03-28 1986-06-17 Christy Machine Company Apparatus for dispensing and distributing moist, self-adhering and compactible materials
US5516011A (en) * 1994-08-01 1996-05-14 Christy Machine Company Roller dispenser machine
US20090185838A1 (en) * 2008-01-23 2009-07-23 Seiko Epson Corporation Method of Manufacturing Toner Carrier Roller, Developer Apparatus, and Image Forming Apparatus
US7925195B2 (en) * 2008-01-23 2011-04-12 Seiko Epson Corporation Method of manufacturing toner carrier roller, developer apparatus, and image forming apparatus
US20220241868A1 (en) * 2019-07-16 2022-08-04 Sandvik Machining Solutions Ab Powder dispensing apparatus

Also Published As

Publication number Publication date
NL7213806A (xx) 1973-04-25
DE2152592A1 (de) 1973-04-26
AU4806572A (en) 1974-04-26
DE2152592B2 (de) 1975-04-10
FR2157604A5 (xx) 1973-06-01
DE2152592C3 (de) 1975-11-27
JPS4851643A (xx) 1973-07-20
GB1383358A (en) 1974-02-12

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