US3912388A - Developing device for use in electrophotographic copying machines - Google Patents

Developing device for use in electrophotographic copying machines Download PDF

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Publication number
US3912388A
US3912388A US49998574A US3912388A US 3912388 A US3912388 A US 3912388A US 49998574 A US49998574 A US 49998574A US 3912388 A US3912388 A US 3912388A
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Grant
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Prior art keywords
developing
patent
oct
agent
device
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
Inventor
Isao Takahashi
Motoharu Fujii
Kazuo Kawakubo
Masao Ariga
Susumu Sugiura
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Canon Inc
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Canon Inc
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    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ELECTROGRAPHY; HOLOGRAPHY
    • G03GELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G21/00Arrangements not provided for by groups G03G13/00 - G03G19/00, e.g. cleaning, elimination of residual charge
    • G03G21/16Mechanical means for facilitating the maintenance of the apparatus, e.g. modular arrangements
    • G03G21/1604Arrangement or disposition of the entire apparatus
    • G03G21/1623Means to access the interior of the apparatus
    • G03G21/1628Clamshell type
    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ELECTROGRAPHY; HOLOGRAPHY
    • G03GELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G15/00Apparatus for electrographic processes using a charge pattern
    • G03G15/06Apparatus for electrographic processes using a charge pattern for developing
    • G03G15/08Apparatus for electrographic processes using a charge pattern for developing using a solid developer, e.g. powder developer
    • G03G15/0822Arrangements for preparing, mixing, supplying or dispensing developer
    • G03G15/0865Arrangements for supplying new developer
    • G03G15/0867Arrangements for supplying new developer cylindrical developer cartridges, e.g. toner bottles for the developer replenishing opening
    • G03G15/0868Toner cartridges 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, acting as an active closure for the developer replenishing opening
    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ELECTROGRAPHY; HOLOGRAPHY
    • G03GELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G15/00Apparatus for electrographic processes using a charge pattern
    • G03G15/06Apparatus for electrographic processes using a charge pattern for developing
    • G03G15/08Apparatus for electrographic processes using a charge pattern for developing using a solid developer, e.g. powder developer
    • G03G15/0822Arrangements for preparing, mixing, supplying or dispensing developer
    • G03G15/0877Arrangements for metering and dispensing developer from a developer cartridge into the development unit
    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ELECTROGRAPHY; HOLOGRAPHY
    • G03GELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G15/00Apparatus for electrographic processes using a charge pattern
    • G03G15/06Apparatus for electrographic processes using a charge pattern for developing
    • G03G15/08Apparatus for electrographic processes using a charge pattern for developing using a solid developer, e.g. powder developer
    • G03G15/0822Arrangements for preparing, mixing, supplying or dispensing developer
    • G03G15/0887Arrangements for conveying and conditioning developer in the developing unit, e.g. agitating, removing impurities or humidity
    • G03G15/0891Arrangements for conveying and conditioning developer in the developing unit, e.g. agitating, removing impurities or humidity for conveying or circulating developer, e.g. augers
    • G03G15/0893Arrangements for conveying and conditioning developer in the developing unit, e.g. agitating, removing impurities or humidity for conveying or circulating developer, e.g. augers in a closed loop within the sump of the developing device
    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ELECTROGRAPHY; HOLOGRAPHY
    • G03GELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G15/00Apparatus for electrographic processes using a charge pattern
    • G03G15/22Apparatus for electrographic processes using a charge pattern involving the combination of more than one step according to groups G03G13/02 - G03G13/20
    • G03G15/28Apparatus for electrographic processes using a charge pattern involving the combination of more than one step according to groups G03G13/02 - G03G13/20 in which projection is obtained by line scanning
    • G03G15/30Apparatus for electrographic processes using a charge pattern involving the combination of more than one step according to groups G03G13/02 - G03G13/20 in which projection is obtained by line scanning in which projection is formed on a drum
    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ELECTROGRAPHY; HOLOGRAPHY
    • G03GELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G2215/00Apparatus for electrophotographic processes
    • G03G2215/06Developing structures, details
    • G03G2215/066Toner cartridge or other attachable and detachable container for supplying developer material to replace the used material
    • G03G2215/0663Toner cartridge or other attachable and detachable container for supplying developer material to replace the used material having a longitudinal rotational axis, around which at least one part is rotated when mounting or using the cartridge
    • G03G2215/0673Generally vertically mounting of said toner cartridge parallel to its longitudinal rotational axis
    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ELECTROGRAPHY; HOLOGRAPHY
    • G03GELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G2215/00Apparatus for electrophotographic processes
    • G03G2215/06Developing structures, details
    • G03G2215/066Toner cartridge or other attachable and detachable container for supplying developer material to replace the used material
    • G03G2215/0663Toner cartridge or other attachable and detachable container for supplying developer material to replace the used material having a longitudinal rotational axis, around which at least one part is rotated when mounting or using the cartridge
    • G03G2215/0678Bottle shaped container having a bottle neck for toner discharge
    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ELECTROGRAPHY; HOLOGRAPHY
    • G03GELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G2215/00Apparatus for electrophotographic processes
    • G03G2215/06Developing structures, details
    • G03G2215/066Toner cartridge or other attachable and detachable container for supplying developer material to replace the used material
    • G03G2215/0685Toner 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
    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ELECTROGRAPHY; HOLOGRAPHY
    • G03GELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G2221/00Processes not provided for by group G03G2215/00, e.g. cleaning or residual charge elimination
    • G03G2221/16Mechanical means for facilitating the maintenance of the apparatus, e.g. modular arrangements and complete machine concepts
    • G03G2221/163Mechanical means for facilitating the maintenance of the apparatus, e.g. modular arrangements and complete machine concepts for the developer unit
    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ELECTROGRAPHY; HOLOGRAPHY
    • G03GELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G2221/00Processes not provided for by group G03G2215/00, e.g. cleaning or residual charge elimination
    • G03G2221/16Mechanical means for facilitating the maintenance of the apparatus, e.g. modular arrangements and complete machine concepts
    • G03G2221/1651Mechanical means for facilitating the maintenance of the apparatus, e.g. modular arrangements and complete machine concepts for connecting the different parts
    • G03G2221/1654Locks and means for positioning or alignment
    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ELECTROGRAPHY; HOLOGRAPHY
    • G03GELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G2221/00Processes not provided for by group G03G2215/00, e.g. cleaning or residual charge elimination
    • G03G2221/16Mechanical means for facilitating the maintenance of the apparatus, e.g. modular arrangements and complete machine concepts
    • G03G2221/1651Mechanical means for facilitating the maintenance of the apparatus, e.g. modular arrangements and complete machine concepts for connecting the different parts
    • G03G2221/1657Mechanical means for facilitating the maintenance of the apparatus, e.g. modular arrangements and complete machine concepts for connecting the different parts transmitting mechanical drive power
    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ELECTROGRAPHY; HOLOGRAPHY
    • G03GELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G2221/00Processes not provided for by group G03G2215/00, e.g. cleaning or residual charge elimination
    • G03G2221/16Mechanical means for facilitating the maintenance of the apparatus, e.g. modular arrangements and complete machine concepts
    • G03G2221/1672Paper handling
    • G03G2221/1675Paper handling jam treatment
    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ELECTROGRAPHY; HOLOGRAPHY
    • G03GELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G2221/00Processes not provided for by group G03G2215/00, e.g. cleaning or residual charge elimination
    • G03G2221/16Mechanical means for facilitating the maintenance of the apparatus, e.g. modular arrangements and complete machine concepts
    • G03G2221/1678Frame structures
    • G03G2221/1687Frame structures using opening shell type machines, e.g. pivoting assemblies

Abstract

An image developing device for an electrophotographic copying machine requiring a replenished supply of a developing agent wherein a lever is pivotally mounted for operation by a rotating cam to advance a ratchet wheel for intermittently withdrawing the developing agent from a reservoir.

Description

United States Patent [1 1 [111 3,912,388

Takahashi et al. Oct. 14, 1975 [54] DEVELOPING DEVICE FOR USE IN [52] US. Cl. 355/3 DD; 118/637; 427/18 ELECTROPHOTOGRAPHIC COPYING [51] Int. Cl. G03G 15/08; G036 15/09 MACHINES [58] Field of Search 355/3 DD, 3 R; 118/637; 96 1 SD; 222 DIG. l; 427 18 [75] Inventors: Isao Takahashi, Yokohama;

Motoharu Fujii, Tokyo; Kazuo Kawakubo, Hino; M asao Ariga, [5 6] References Clled Komae; Susumu Sugiura, Yamato, STATES PATENTS all Of Japan 2,965,266 I 12/1960 Rutkus et a1 96/1 SD 73 A =c Kab h'kiKa'h Tk, 1 sslgnee il? us 1 Is 0 yo Primary ExaminerRobert P. Gremer Attorney, Agent, or Firm-Fitzpatrick, Cella, Harper 22] Filed: Aug. 23, 1974 & s i t [21] Appl. No.: 499,985

[57] ABSTRACT Related US Application Data An image developing device for an electrophoto [62] g z g ggs i g y fig sgg gi g graphic copying machine requiring a replenished sup- NO 3 764 208 ply of a developing agent wherein a lever is pivotally mounted for operation by a rotating cam to advance a [30] Forei n Ap cation Priority D ata ratchet wheel for intermittently withdrawing the de- D 29 I g /O 45127212 veloping agent from a reservoir.

ec. apan 4 Claims, 25 Drawing Figures U.S.-Patent Oct. 14,1975 Sheet10f19 3,912,388

U.S. Patent Oct. 14, 1975 Sheet2of 19 3,912,388

US. Patent Oct.14,1975 Sheet3of 19 3,912,388

NO E U.S. Patent Oct. 14,1975 Sheet4of 19 3,912,388

FIG. 5

US. Patent Oct.14,1975 SheetSof 19 3,912,388

Sheet 7 0f 19 US. Patent 0a. 14, 1975 U.'S. Patent Oct.14,1975 Sheet8of 19 3,912,388

U.S.-Patent Oct. 14,1975 Sheet90f 19 3,912,388

U.S. Patent Oct. 14,1975 Sheet 10 of 19 3,912,388

FIG.|3

US. Patent Oct. 14,1975 Sheet110fl9 3,912,388

US. Patent Oct. 14, 1975 Sheet 12 of 19 3,912,388

U.S.Patcnt ()ct.14,1975 Sheet 13 0f19 3,912,388

U.S. Patent Oct.14,1975 Sheet 14 of 19 3,912,388

US. Patent Oct. 14, 1975 Sheet 15 of 19 3,912,388

U.S.'Patent Oct.14,1975 Sheet 17 of 19 3,912,388

U.S. Patent Oct. 14, 1975 Sheet 18 of 19 3,912,388

U.S.'Patent Oct.14, 1975 Sheet 19 of 19 3,912,388

w? w? H55 H35 H22 32 x 72 5:04 pmOlvmoo P I

Claims (4)

1. In an image developing device including a housing, a reservoir for a developing agent mounted on the housing, and a shaft which rotates during operation of said device, wherein said device requires a replenished supply of said developing agent during said operation, the improvement comprising developing means for applying said developing agent to an object to be developed, a cam plate fixed obliquely on said rotatable shaft, a lever pivotally mounted intermediate its length and having a ratchet pawl on one end, means for urging the other end of said lever against said cam plate, a ratchet wheel mounted for rotation by said pawl, and developer agent supply means operable upon rotation of said ratchet wheel to withdraw said developer agent from said reservoir and supply it to said developing means, said developer agent supply means including a supply roller having an irregular outer-surface, said reservoir having an opening in a bottom portion thereof in which opening said supply roller is mounted.
2. A developing device according to claim 1, wherein said lever is pivotally mounted on a shaft fixedly provided on the housing, and said urging means comprises a spring member extended between said lever and said housing for bringing said other end of said lever into pressure contact with said oblique caM plate.
3. A developing device according to claim 1, wherein said developing means comprises a magnetic brush roller and said supply means includes a screw roller for transporting said developing agent.
4. A developing device according to claim 3, wherein said oblique plate cam is fixedly provided on said screw roller.
US3912388A 1970-12-29 1974-08-23 Developing device for use in electrophotographic copying machines Expired - Lifetime US3912388A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP12721270 1970-12-29
US38139873 true 1973-07-23 1973-07-23
US3912388A US3912388A (en) 1970-12-29 1974-08-23 Developing device for use in electrophotographic copying machines

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US3912388A US3912388A (en) 1970-12-29 1974-08-23 Developing device for use in electrophotographic copying machines

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US3912388A true US3912388A (en) 1975-10-14

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Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4032225A (en) * 1974-09-24 1977-06-28 Rank Xerox Ltd. Copying machines
US4150892A (en) * 1976-09-03 1979-04-24 Agfa-Gevaert A.G. Toner dispensing device for an electrostatic copier
US4451133A (en) * 1981-04-30 1984-05-29 Siemens Aktiengesellschaft Device for removing the developer mix from a developing station
US4461238A (en) * 1981-05-13 1984-07-24 Siemens Aktiengesellschaft Magnetic brush developing station
US4634286A (en) * 1985-09-06 1987-01-06 Eastman Kodak Company Electrographic development apparatus having a continuous coil ribbon blender
WO1988002506A1 (en) * 1986-09-24 1988-04-07 Siemens Aktiengesellschaft Co- and counter-rotating development system for an electro-photographic installation
US4803513A (en) * 1986-01-28 1989-02-07 Minolta Camera Kabushiki Kaisha Toner supplying device
US4887132A (en) * 1984-04-06 1989-12-12 Eastman Kodak Company Electrographic development apparatus having a ribbon blender
US5023664A (en) * 1986-09-24 1991-06-11 Siemens Aktiengesellschaft Non-mechanical printer or copier means comprising an exposure means arranged in the development region
US6580881B2 (en) 2001-10-04 2003-06-17 Lexmark International, Inc. Method of detecting waste toner in a container of an image forming apparatus
US20100054779A1 (en) * 2008-08-29 2010-03-04 Kyocera Mita Corporation Developing device and image forming apparatus

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2965266A (en) * 1958-04-30 1960-12-20 Haloid Xerox Inc Xerographic toner dispenser

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2965266A (en) * 1958-04-30 1960-12-20 Haloid Xerox Inc Xerographic toner dispenser

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4032225A (en) * 1974-09-24 1977-06-28 Rank Xerox Ltd. Copying machines
US4150892A (en) * 1976-09-03 1979-04-24 Agfa-Gevaert A.G. Toner dispensing device for an electrostatic copier
US4451133A (en) * 1981-04-30 1984-05-29 Siemens Aktiengesellschaft Device for removing the developer mix from a developing station
US4461238A (en) * 1981-05-13 1984-07-24 Siemens Aktiengesellschaft Magnetic brush developing station
US4887132A (en) * 1984-04-06 1989-12-12 Eastman Kodak Company Electrographic development apparatus having a ribbon blender
US4634286A (en) * 1985-09-06 1987-01-06 Eastman Kodak Company Electrographic development apparatus having a continuous coil ribbon blender
US4803513A (en) * 1986-01-28 1989-02-07 Minolta Camera Kabushiki Kaisha Toner supplying device
WO1988002506A1 (en) * 1986-09-24 1988-04-07 Siemens Aktiengesellschaft Co- and counter-rotating development system for an electro-photographic installation
US4952979A (en) * 1986-09-24 1990-08-28 Siemens Aktiengesellschaft Isorunning-counterrunning developer station for an electrophotographic means
US5023664A (en) * 1986-09-24 1991-06-11 Siemens Aktiengesellschaft Non-mechanical printer or copier means comprising an exposure means arranged in the development region
US6580881B2 (en) 2001-10-04 2003-06-17 Lexmark International, Inc. Method of detecting waste toner in a container of an image forming apparatus
US20100054779A1 (en) * 2008-08-29 2010-03-04 Kyocera Mita Corporation Developing device and image forming apparatus
US8538301B2 (en) * 2008-08-29 2013-09-17 Kyocera Mita Corporation Developing device and image forming apparatus with soft blocking dissolving features

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