Patents-Review.com
ClassID:

177713 ⎘

G03G15/0921 - CPC Classification

Classification description:

Apparatus for electrographic processes using a charge pattern for developing using a solid developer, e.g. powder developer using magnetic brush Details concerning the magnetic brush roller structure, e.g. magnet configuration

Sub-classes:
Recent Application in this class:
#1
20260153815
2026-06-04

DEVELOPING DEVICE AND IMAGE FORMING APPARATUS

 #2
20260140461
2026-05-21

DEVELOPING APPARATUS

 #3
20260140460
2026-05-21

DEVELOPING APPARATUS

 #4
20260133524
2026-05-14

DEVELOPING DEVICE

 #5
20260086477
2026-03-26

DEVELOPING DEVICE

 #6
20250298338
2025-09-25

DEVELOPING DEVICE

 #7
20250258450
2025-08-14

MAGNET ROLLER, MANUFACTURING METHOD FOR A MAGNET ROLLER, AND DEVELOPING APPARATUS

 #8
20250237976
2025-07-24

DEVELOPMENT DEVICE

 #9
20250199454
2025-06-19

IMAGE FORMING APPARATUS

 #10
20250138452
2025-05-01

DEVELOPING DEVICE

 #11
20250138451
2025-05-01

DEVELOPING DEVICE

 #12
20250102964
2025-03-27

DEVELOPING DEVICE AND IMAGE FORMING APPARATUS

 #13
20250102963
2025-03-27

DEVELOPING DEVICE AND IMAGE FORMING APPARATUS

 #14
20250093794
2025-03-20

DEVELOPING APPARATUS

 #15
20250053115
2025-02-13

DEVELOPING DEVICE

 #16
20250013170
2025-01-09

IMAGE FORMING APPARATUS CAPABLE OF SUPPRESSING INCREASE IN SIZE

 #17
20240427284
2024-12-26

DRUM UNIT CAPABLE OF SUPPRESSING COMPLICATION OF WIRING

 #18
20240353776
2024-10-24

DEVELOPING DEVICE

 #19
20240272565
2024-08-15

DEVELOPING DEVICE

 #20
20240176289
2024-05-30

DEVELOPING DEVICE AND IMAGE FORMING APPARATUS

 #21
20240142897
2024-05-02

Development device, image forming apparatus, and development method

 #22
20240077813
2024-03-07

Developing device, process cartridge, and image forming apparatus including an entrance seal which contacts an image bearer

 #23
20240069470
2024-02-29

Developing device having enhanced carrier control

 #24
20230408976
2023-12-21

Image forming apparatus

 #25
20230350323
2023-11-02

Image forming apparatus

 #26
20230314983
2023-10-05

Channel state information measurements for license assisted access

 #27
20230288843
2023-09-14

Developing device

 #28
20230259052
2023-08-17

Developing device having magnetic supplying roller

 #29
20230244159
2023-08-03

Image forming apparatus capable of suppressing increase in size

 #30
20230195025
2023-06-22

Image forming apparatus

 #31
20230176520
2023-06-08

Development device and image formation apparatus

 #32
20230127032
2023-04-27

INTERNAL PRESSURE CONTROL AND COLLECTION OF SCATTERED DEVELOPER IN DEVELOPING DEVICE

 #33
20230022669
2023-01-26

Developing device including developer carrying member and containing two-component developer and image forming apparatus including the developing device

 #34
20220413417
2022-12-29

Imaging system with a developing chamber having a developer roller and multiple air passages

 #35
20220404740
2022-12-22

Developing device

 #36
20220373935
2022-11-24

Developing device and image forming apparatus

 #37
20220197181
2022-06-23

Imaging system with control member for conveyance path and developing roller having a peeling pole

 #38
20220187760
2022-06-16

Drum unit capable of suppressing complication of wiring

 #39
20220146963
2022-05-12

Developing apparatus

 #40
20220107588
2022-04-07

Developer conveyor having helical blades and protrusions

 #41
20220066356
2022-03-03

Developing apparatus capable of enhancing efficiency of peeling off developer from a developing sleeve

 #42
20220035273
2022-02-03

Developing device with elastic film to block air input

 #43
20210389696
2021-12-16

Developing unit, process cartridge, and image forming apparatus using toner to develop toner image

 #44
20210311433
2021-10-07

Drum unit capable of suppressing complication of wiring

 #45
20210311414
2021-10-07

Image forming apparatus capable of suppressing increase in size

 #46
20210294244
2021-09-23

Developing device with structure to prevent scattering toner using magnetic repulsive force

 #47
20210263447
2021-08-26

Magnetic carrier bead separation

 #48
20210223717
2021-07-22

DEVELOPING DEVICE

 #49
20210109461
2021-04-15

Developing device

 #50
20210033998
2021-02-04

Developing device with a developer regulator and a stopper

 #51
20200379371
2020-12-03

Image forming apparatus with detection of developer magnetic permeability

 #52
20200356027
2020-11-12

Developing device

 #53
20200301315
2020-09-24

DEVELOPING DEVICE AND IMAGE FORMING APPARATUS

 #54
20200301313
2020-09-24

Developing device, process cartridge, and image forming apparatus

 #55
20200301312
2020-09-24

Developing apparatus

 #56
20200233334
2020-07-23

Channel state information measurements for license assisted access

 #57
20200150557
2020-05-14

Developing device, process cartridge, and image forming apparatus

 #58
20200110350
2020-04-09

Developing device including a movable magnetic member and image forming apparatus therewith

 #59
20200096903
2020-03-26

Replenishment system, developing device, and image forming apparatus

 #60
20200064756
2020-02-27

Developing apparatus having magnetic field generating portion

 #61
20200050124
2020-02-13

Magnetic carrier, two-component developer, replenishing developer, and image forming method

 #62
20200026221
2020-01-23

TONER CONTAINER INCLUDING A ROTATABLE MAGNET HAVING A VARYING ORIENTATION RELATIVE TO A PIVOT AXIS

 #63
20200019086
2020-01-16

Image forming apparatus

 #64
20190384206
2019-12-19

Developing apparatus for providing developer to an image bearing member and image forming apparatus having the developing apparatus

 #65
20190361370
2019-11-28

Developing apparatus, process cartridge, and image forming apparatus

 #66
20190332036
2019-10-31

Development device manifold seal

 #67
20190317430
2019-10-17

Developing device and image forming device

 #68
20190250531
2019-08-15

Developing device having magnetic flux density distribution

 #69
20190243287
2019-08-08

Method for fixing regulating blade, developing device, developer bearing member, and magnet

 #70
20190219951
2019-07-18

Developing device, process cartridge, and image forming apparatus incorporating same

 #71
20190219950
2019-07-18

Development device for an electrostatic latent image

 #72
20190219945
2019-07-18

Developing device with developing roller and thickness regulating member and image forming apparatus provided with same

 #73
20190187590
2019-06-20

Developing apparatus

 #74
20190187589
2019-06-20

Magnet roller, developing roller, developing device, and image forming apparatus

 #75
20190163094
2019-05-30

Developing device and image forming apparatus, wherein the developing roller includes a magnetic pole forming part to be formed with a plurality of magnetic poles along a circumference direction of the developing roller

 #76
20190146373
2019-05-16

Developing device and image forming apparatus therewith

 #77
20190011852
2019-01-10

Channel state information measurements for license assisted access

 #78
20180341198
2018-11-29

Developing device

 #79
20180321612
2018-11-08

Image forming apparatus

 #80
20180284656
2018-10-04

Developing device

 #81
20180284643
2018-10-04

DEVELOPING DEVICE

 #82
20180284641
2018-10-04

Developing device having spaced cover portion and frame

 #83
20180267433
2018-09-20

Development device for an electrostatic latent image

 #84
20180259881
2018-09-13

Development device using a dry electrophotographic method

 #85
20180246439
2018-08-30

Replaceable unit for an image forming device having magnets of varying angular offset for toner level sensing

 #86
20180181052
2018-06-28

Image forming apparatus

 #87
20180181029
2018-06-28

Developing method in a developer device having a mechanism to reduce scattering of toner

 #88
20180164718
2018-06-14

Stirring conveyance member, developing device including the same, and image forming apparatus

 #89
20180107136
2018-04-19

Developing device and image forming apparatus

 #90
20180074441
2018-03-15

Developing device and magnet for two-component development

 #91
20180024468
2018-01-25

Developing apparatus, process cartridge, and image forming apparatus

 #92
20180024463
2018-01-25

Developing system and image forming apparatus

 #93
20180004127
2018-01-04

Developing device and image forming apparatus

 #94
20170371273
2017-12-28

Molding device, metal mold, method of manufacturing magnet roll and method of magnetizing magnet roll

 #95
20170357186
2017-12-14

Developing device

 #96
20170351195
2017-12-07

Developing device and image forming apparatus incorporating same that reduce low-flow regions of toner within the developing device

 #97
20170343928
2017-11-30

Developing apparatus

 #98
20170269509
2017-09-21

Developing device and image forming apparatus provided with same

 #99
20170235248
2017-08-17

Development device and image forming apparatus

 #100
20170227891
2017-08-10

Developing device and image forming apparatus with a magnetically charged collection member

 #101
20170205731
2017-07-20

Developer device having a mechanism to reduce scattering of toner and image forming apparatus

 #102
20170160675
2017-06-08

DEVELOPING DEVICE, PROCESS CARTRIDGE, AND IMAGE FORMING APPARATUS INCORPORATING SAME

 #103
20170146930
2017-05-25

DEVELOPING APPARATUS

 #104
20170115604
2017-04-27

Developing device, and image forming apparatus and process cartridge incorporating same

 #105
20170102636
2017-04-13

Developing device

 #106
20170090351
2017-03-30

Developing apparatus, process cartridge and image forming apparatus

 #107
20170090342
2017-03-30

Developing device and image forming apparatus and process cartridge incorporating same

 #108
20170068188
2017-03-09

Developing device having magnetic sealing members

 #109
20170068182
2017-03-09

Developing device, process cartridge, and image forming apparatus

 #110
20170052478
2017-02-23

Replaceable unit for an image forming device having magnets of varying angular offset for toner level sensing

 #111
20160349670
2016-12-01

IMAGE FORMING APPARATUS

 #112
20160266520
2016-09-15

Image forming apparatus apparatus positioning magnets by contact faces of shaft and bearing and restraining action of force from guide part by clearance between shaft and bearing

 #113
20160266519
2016-09-15

DEVELOPING DEVICE AND IMAGE FORMING APPARATUS

 #114
20160216642
2016-07-28

IMAGE FORMING UNIT AND IMAGE FORMING APPARATUS

 #115
20160091831
2016-03-31

End sealing and magnetic field truncation of a magnetic roll of a dual component development electrophotographic image forming device

 #116
20160091830
2016-03-31

Development device

 #117
20160091829
2016-03-31

Developing unit

 #118
20160077466
2016-03-17

Replaceable unit for an image forming device having magnets of varying angular offset for toner level sensing

 #119
20160041505
2016-02-11

Developing apparatus

 #120
20150378277
2015-12-31

Developing device and image forming apparatus provided with same

 #121
20150362864
2015-12-17

Image forming apparatus

 #122
20150362859
2015-12-17

Developing cartridge having a frame rotatably supporting a developing roller

 #123
20150338780
2015-11-26

Image forming apparatus

 #124
20150268586
2015-09-24

Developing device and image forming apparatus

 #125
20150261135
2015-09-17

Development roller, developing device, and image forming apparatus

 #126
20150253689
2015-09-10

Developing unit

 #127
20150227087
2015-08-13

Image forming apparatus

 #128
20150227086
2015-08-13

Developing device and image forming apparatus and process cartridge incorporating same

 #129
20150227077
2015-08-13

Developing device and image forming apparatus

 #130
20150177652
2015-06-25

Developing device, image forming apparatus

 #131
20150168874
2015-06-18

DEVELOPING APPARATUS

 #132
20150153678
2015-06-04

Developing apparatus

 #133
20150139699
2015-05-21

Developing apparatus

 #134
20150104221
2015-04-16

Developing device having magnetic roller and image forming apparatus

 #135
20150104216
2015-04-16

Development device and image forming apparatus

 #136
20150093139
2015-04-02

Developing device

 #137
20150086247
2015-03-26

DEVELOPING DEVICE AND IMAGE FORMING APPARATUS

 #138
20150078788
2015-03-19

Developing device and image forming apparatus and process cartridge incorporating same

 #139
20150071686
2015-03-12

Method and apparatus for magnetic brush retraction in electrophotographic system

 #140
20150071683
2015-03-12

Developing device

 #141
20150055978
2015-02-26

Image forming apparatus

 #142
20150043947
2015-02-12

Developing device and image forming apparatus including same

 #143
20150037074
2015-02-05

Developing unit adopting a two component agent and electrophotographic image forming apparatus employing the same

 #144
20150030354
2015-01-29

Development device, and image forming apparatus

 #145
20150023701
2015-01-22

Developing device and image forming apparatus having the same

 #146
20150023700
2015-01-22

Developing device, image forming apparatus, and process cartridge

 #147
20150017588
2015-01-15

Photolithographic patterning of a cylinder

 #148
20150010335
2015-01-08

Developing device having developer layer regulation

 #149
20140301747
2014-10-09

Development device, process cartridge, image forming apparatus incorporating same, and developer amount adjustment method therefor

 #150
20140286681
2014-09-25

Developing device and image forming apparatus

 #151
20140233985
2014-08-21

Developing device and image forming apparatus provided therewith

 #152
20140233984
2014-08-21

Development device including a removable seal to seal a supplied-developer and/or a collected-developer communicating area

 #153
20140169839
2014-06-19

Developing device and image forming apparatus

 #154
20140161493
2014-06-12

Developing device and image forming apparatus

 #155
20140140739
2014-05-22

Developing device and image forming apparatus

 #156
20140029986
2014-01-30

Developing device and image forming apparatus having magnetic poles to control the distribution of a magnetic attraction force

 #157
20140023409
2014-01-23

Developing device, image forming apparatus and image forming method

 #158
20140016969
2014-01-16

Developing device and image forming device

 #159
20130315635
2013-11-28

Developing device and image forming apparatus

 #160
20130279946
2013-10-24

Image forming apparatus having suction duct for sucking developer not used in development

 #161
20130251415
2013-09-26

Image forming apparatus

 #162
20130251414
2013-09-26

Developing device and image forming apparatus

 #163
20130251413
2013-09-26

Image forming apparatus

 #164
20130243493
2013-09-19

Developing device and image forming apparatus

 #165
20130243489
2013-09-19

Developing apparatus

 #166
20130243474
2013-09-19

Developing device and image forming apparatus

 #167
20130236216
2013-09-12

Magnet roller, developer bearer, development device, process cartridge, and image forming apparatus

 #168
20130195515
2013-08-01

Developing device and image forming apparatus using the same

 #169
20130195513
2013-08-01

DEVELOPING DEVICE AND IMAGE FORMING APPARATUS

 #170
20130195501
2013-08-01

Developing device and image forming apparatus using the same

 #171
20130164043
2013-06-27

Developing device and image forming apparatus

 #172
20130164042
2013-06-27

Developing device and image forming apparatus including the same

 #173
20130149012
2013-06-13

MAGNET ROLL

 #174
20130101315
2013-04-25

Development roller with increasing magnetic field

 #175
20130051865
2013-02-28

Magnet roller

 #176
20130051859
2013-02-28

Developer carrying member, method for its production, and developing assembly

 #177
20130004209
2013-01-03

Developing device including a developer container with toner particles and magnetic carrier particles (Rz=0.5−3.0 gm) and a developer bearing member (Rz=10−30 gm), and an image forming apparatus and process cartridge containing the same

 #178
20120294655
2012-11-22

Development roller, development device, process cartridge and image-forming apparatus

 #179
20120243911
2012-09-27

Developing device and image forming apparatus

 #180
20120201577
2012-08-09

Developing apparatus

 #181
20120195647
2012-08-02

Developing device

 #182
20120163878
2012-06-28

Developing device

 #183
20120082487
2012-04-05

Developing device and image forming apparatus

 #184
20120082486
2012-04-05

Image forming apparatus

 #185
20120039637
2012-02-16

Developing device and image forming apparatus

 #186
20110262190
2011-10-27

Magnet roller, developer holder element, develop unit, process cartridge, and image forming apparatus

 #187
20110217085
2011-09-08

Developing apparatus, process cartridge, and image forming apparatus

 #188
20110194874
2011-08-11

Development device, and process cartridge and image forming apparatus incorporating same

 #189
20110170916
2011-07-14

Developing apparatus

 #190
20110170914
2011-07-14

MAGNETIC ARRANGEMENT IN A DEVELOPMENT ROLLER OF AN ELECTROSTATOGRAPHIC PRINTER

 #191
20110150539
2011-06-23

Development device and image forming apparatus having the same

 #192
20110150538
2011-06-23

Developing device, process unit and image forming apparatus

 #193
20110142500
2011-06-16

DEVELOPING DEVICE, DEVELOPING METHOD AND IMAGE FORMING APPARATUS

 #194
20110123234
2011-05-26

Developing device, image forming apparatus, and process cartridge

 #195
20110058858
2011-03-10

Developing device, process cartridge, and image forming apparatus

 #196
20110044730
2011-02-24

DEVELOPING DEVICE AND ELECTROPHOTOGRAPHIC IMAGE FORMING APPARATUS INCLUDING THE DEVELOPING DEVICE

 #197
20110044721
2011-02-24

Universal magnet roller press apparatus, assembly, and method

 #198
20100247165
2010-09-30

Developing device, method of producing developing device, and image forming apparatus

 #199
20100247163
2010-09-30

Developer station and method for an electrographic printer with magnetically enabled developer removal

 #200
20100247162
2010-09-30

Developer station for an electrographic printer having reduced developer agitation

 #201
20100202805
2010-08-12

Development device, process cartridge, and image forming apparatus

 #202
20100196045
2010-08-05

Developing apparatus

 #203
20100178082
2010-07-15

Developing Device and Process Cartridge and Imaged Forming Device Provided with them

 #204
20100098463
2010-04-22

Developing device and image forming device

 #205
20100061773
2010-03-11

Developing apparatus featuring multiple magnetic rollers

 #206
20090311011
2009-12-17

Developing device and image forming apparatus

 #207
20090290913
2009-11-26

Developing device, image forming apparatus and developing roller

 #208
20090290912
2009-11-26

Developer apparatus and image forming apparatus comprising the same

 #209
20090285607
2009-11-19

Developing apparatus

 #210
20090274489
2009-11-05

Developing apparatus usable with image forming apparatus, image forming apparatus having the same, method to prevent developer from flowing out the developing apparatus

 #211
20090245889
2009-10-01

Developing unit, image forming apparatus incorporating same, and process cartridge including same

 #212
20090245887
2009-10-01

Developing device, and image forming apparatus and process cartridge comprising the same

 #213
20090245882
2009-10-01

Developer regulating member in a developing unit, process cartridge including same, and image forming apparatus incorporating same

 #214
20090238610
2009-09-24

Developing device, process cartridge, method and image forming apparatus for developing an electrostatic latent image on an image carrier

 #215
20090232563
2009-09-17

Magnetic roller, developer carrier, developing device, process cartridge, and image forming apparatus

 #216
20090185835
2009-07-23

Image forming apparatus including pressing unit to maintain gap between rollers

 #217
20090175666
2009-07-09

Magnetic field generating member and manufacturing method thereof, magnetic particle support body, image development device, process cartridge and image forming apparatus

 #218
20090162108
2009-06-25

Image forming apparatus

 #219
20090154961
2009-06-18

DEVELOP UNIT, PROCESS CARTRIDGE, AND IMAGE FORMATION APPARATUS

 #220
20090148196
2009-06-11

Magnet knife assembly for a toner developing device

 #221
20090110441
2009-04-30

Magnetic roller, development device, and image forming method

 #222
20090035026
2009-02-05

Developing device and image forming device equipped with same

 #223
20090010683
2009-01-08

Developing device and image forming apparatus having a developing roller with a grooved sleeve

 #224
20080298849
2008-12-04

Magnetic roller and manufacturing method thereof, developer carrier, development device, processing cartridge, and image forming apparatus

 #225
20080279596
2008-11-13

LOW GRAININESS PRINTING AND MICR PRINTING WITH SCMB AND EA-SCMB SYSTEMS

 #226
20080267672
2008-10-30

Developing device, image supporter unit, and image formation apparatus

 #227
20080261134
2008-10-23

DEVELOPING APPARATUS, DEVELOPING METHOD AND IMAGE FORMING APPARATUS

 #228
20080253809
2008-10-16

Developing unit and image forming apparatus with magnet bearing members

 #229
20080247786
2008-10-09

Developing device and image forming apparatus

 #230
20080246572
2008-10-09

Magnet Roller

 #231
20080240793
2008-10-02

Image forming apparatus with developing unit having a magnetic brush

 #232
20080232865
2008-09-25

MAGNET ROLLER, DEVELOPING AGENT CARRIER, DEVELOPING UNIT, PROCESS CARTRIDGE AND IMAGE FORMING APPARATUS USING SAME

 #233
20080232862
2008-09-25

Image forming apparatus with controlled application of alternating-current bias

 #234
20080232861
2008-09-25

Development device and image forming apparatus

 #235
20080226355
2008-09-18

DEVELOPMENT DEVICE, PROCESS CARTRIDGE, AND IMAGE FORMATION APPARATUS

 #236
20080226354
2008-09-18

Apparatus and methods for loading a donor roll

 #237
20080226353
2008-09-18

Apparatus and methods for loading a donor roll utilizing a slow speed trim roll

 #238
20080205941
2008-08-28

Development apparatus and image forming apparatus

 #239
20080181677
2008-07-31

Developing unit and image forming apparatus using the same

 #240
20080124137
2008-05-29

Developing unit and image forming apparatus including the same

 #241
20080112732
2008-05-15

DEVELOPMENT STATION FOR A REPRODUCTION APPARATUS

 #242
20070264041
2007-11-15

Local suppression of unwanted toner emissions

 #243
20070127952
2007-06-07

DEVELOPMENT DEVICE, PROCESS CARTRIDGE AND IMAGE FORMING APPARATUS

 #244
20070082286
2007-04-12

Carrier, developer including the carrier, and image forming apparatus using the developer

 #245
20070053725
2007-03-08

Developing apparatus featuring magnetic seal members disposed in developer delivery regions

 #246
20070053724
2007-03-08

Developing apparatus featuring multiple magnetic rollers for developing a latent image multiple times

 #247
20070025777
2007-02-01

Magnet roller developing device and image forming apparatus for reducing obstructions in developer circulation path

 #248
20070025776
2007-02-01

Developing unit having improved agent recovery and supply system and image forming apparatus using the same

 #249
20070003326
2007-01-04

Developing device and image forming device and preventing toner contamination thereof

 #250
20060275055
2006-12-07

Electrographic development method and apparatus

 #251
20060251984
2006-11-09

Toner for electrophotography, developer using the same, image-forming process cartridge using the same, image-forming apparatus using the same and image-forming process using the same

 #252
20060233572
2006-10-19

Developing apparatus

 #253
20060228135
2006-10-12

Developing device, process cartridge and image forming apparatus

 #254
20060222417
2006-10-05

Two-component developing device and image forming apparatus including the same

 #255
20060216069
2006-09-28

Developing unit and image forming apparatus

 #256
20060204285
2006-09-14

Apparatus for foming images

 #257
20060198655
2006-09-07

Developing device and image forming device equipped with same

 #258
20060093406
2006-05-04

Image forming apparatus

 #259
20060083556
2006-04-20

Image forming apparatus including an index feature for extending the life of a photosensitive member

 #260
20060062605
2006-03-23

Developing device and image formation device

 #261
20060029435
2006-02-09

Image forming apparatus including a magnetic brush developing system using a two-component developer comprising toner and carrier

 #262
20060013622
2006-01-19

Developing unit for an image forming apparatus

 #263
20050276636
2005-12-15

Magnetic roller for image developing means

 #264
20050244195
2005-11-03

Developing device

 #265
20050238393
2005-10-27

Developing apparatus with first and second developing bearing members each including a magnetic field generator wherein a peak position magnetic force of the second developing members is a defined value

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Developing method using a developer with a specified degree of compression and shearing stress

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2005-10-20

Magnet roller

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2005-09-29

Developing apparatus including magnetic field generating means, for use with a developer which includes a magnetic toner component

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2005-09-08

Toner for electrophotography, developer using the same, image-forming process cartridge using the same, image-forming apparatus using the same and image-forming process using the same

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20050135843
2005-06-23

Developing roller, developing apparatus, process cartridge, and image formation apparatus

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20050084297
2005-04-21

Magnetic roller and methods of producing the same

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20050069350
2005-03-31

Electrographic development method and apparatus

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20050063738
2005-03-24

Development magnet roller, development device, process cartridge and image forming apparatus

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17668118
2023-03-14

Development system with developer belt

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17584445
2023-02-28

Image forming apparatus with adjustable doctor blade

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2019-12-03

Developing device and image forming apparatus

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15058200
2017-07-18

Developer unit air venting in a dual component development electrophotographic image forming device

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2016-07-26

Developing device and image forming apparatus therewith, and developer carrying member therein

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2016-05-10

Carrier for two component development system