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Class Information
Number: 399
Name: Electrophotography >
Description: This class provides for electrophotographically reproducing an original (e.g., document) by the action of light directly from the original to a photoconductive member whose electrical conductivity, electrical charge, magnetic condition, or electrical emissivity of a photoconductive medium is selectively altered by the action of light to produce an electrostatic latent image which persists after imaging based upon differences in such electrical property. The latent image is made visible by development; and the developed image may be made permanent by transfer and fixing, or fixing. This class provides for the subcombinations directed to charging, developing, transferring, fixing, cleaning, or sheet feeding for an electrophotographic apparatus whether or not the imaging light is directly from the original. This class also provides for methods and means for perfecting the apparatus provided above (e.g., control of electrophotographic process, diagnostics, operator interface, etc.).










Class Number Class Name No. of Patents
399/343

Cleaning of imaging surface

290
399/347

Abrasion or film removal

54
399/350

Blade

554
399/351

Having holder

200
399/344

Color

31
399/353

Fibrous brush

217
399/354

Having applied voltage

150
399/355

Having forced air (e.g., vacuum)

43
399/358

Having handling of removed material

372
399/360

Having storage

274
399/359

Recycled to developing unit

217
399/346

Including lubricant

233
399/356

Magnetic

83
399/349

Plural diverse

171
399/348

Removing liquid developer

88
399/345

Retractable cleaning arrangement

119
399/357

Roller

161
399/352

Web

58
399/1

Combined with diverse subject matter

254
399/2

With diverse image formation

106
399/3

Electrostatic

26
399/4

Light (e.g., laser, led, lcd)

64
399/6

Composite image

67
399/7

On or adjacent to platen

16
399/5

Shared optics

12
399/38

Control of electrophotography process

228
399/42

Artificial intelligence

67
399/39

Color balance

165
399/40

Of overlapped toner images

83
399/41

Single detector for plural toners

31
399/50

Control of charging

482
399/71

Control of cleaning

298
399/53

Control of developing

386
399/55

Bias control

452
399/56

In response to potential of latent image

66
399/54

Color selection

106
399/58

Concentration control

221
399/60

Detection of developed image

145
399/61

Detection of toner in developing unit

199
399/62

Concentration detection

142
399/63

Magnetic detector

87
399/64

Optical detector

96
399/65

Including sample holder

25
399/59

Setting of reference value

95
399/57

Liquid

164
399/51

Control of exposure

289
399/52

In response to light from original

63
399/67

Control of fixing

554
399/68

Conveyance of copy

291
399/69

Temperature control

1023
399/70

Warmup or standby mode

361
399/66

Control of transfer

855
399/74

Densitometer detail

163
399/73

Electrometer detail

48
399/72

Forming test image

359
399/44

Having temperature or humidity detection

510
399/46

Of plural processes

246
399/47

Having detection of exposure light

58
399/48

Having detection of photoconductor potential

150
399/49

Having detection of toner (e.g., patch)

1039
399/45

Responsive to copy media characteristic

755
399/43

Responsive to number of copies or passage of time

368
399/9

Diagnostics

455
399/15

By inspection of copied image

183
399/34

Cleaning

67
399/35

Waste toner container

129
399/13

Component present or mounted

290
399/24

Consumable

397
399/26

Photoconductive member

164
399/25

Process cartridge

213
399/27

Toner

928
399/30

By concentration detector

234
399/28

Color

92
399/29

Deterioration or developability of toner

145
399/16

Document handling

294
399/23

Copy medium supply

159
399/21

Jam

338
399/22

Misstrip of copy

56
399/18

Malfunction detection responsive

239
399/19

Job recovery

111
399/20

Purge

59
399/17

Of original

80
399/33

Fixing (e.g., over-temperature protection)

278
399/31

Image forming component

145
399/32

Of exposure system (e.g., lamp, scanning, erase)

85
399/10

Log report

135
399/36

Of motive power or driven unit

68
399/37

Power supply

160
399/11

Service mode

148
399/14

Unacceptable copy coverage

62
399/12

Unit or part identification

641
399/361

Document handling

286
399/362

Book copying

72
399/381

Copy

213
399/384

Continuous (e.g., roll, fanfold)

218
399/385

Having cutting

112
399/386

In response to detection of original

17
399/387

Length adjustment

22
399/397

Delivering from transfer position

229
399/406

Curl correction

220
399/405

Discharge of copy (e.g., exit tray)

473
399/403

Having collating

172
399/404

Having offset stacking

56
399/407

Post-processing

402
399/408

Having binding

207
399/410

By staple

290
399/409

By toner

28
399/401

Re-fed for additional image

447
399/402

Having intermediate storage

133
399/398

Stripping from photoconductive member

124
399/399

Claw

62
399/400

To fixing (e.g., fuser)

193
399/388

Feeding to transfer position

383
399/393

Copy medium input tray

228
399/389

Having detection of size or type

251
399/390

Having treatment of copy medium

136
399/394

In registration with image

232
399/395

Skew correction

191
399/396

Speed control of conveyance

196
399/391

Plural copy medium sources

168
399/392

Manual feed

97
399/382

Interleaving (e.g., cover or partitioning sheet)

112
399/383

Plural copies (from same original)

27
399/363

Original and copy

54
399/364

Duplex

373
399/365

Original

82
399/367

Automatic document feeder

499
399/374

Copying both sides of original

243
399/375

For continuous or fanfold paper

32
399/371

Having position detection

123
399/370

Having size detection

183
399/369

Plural document holders

47
399/368

Plural originals simultaneously

46
399/373

Recirculating

90
399/372

Registration

108
399/376

Having detection of size

123
399/377

Holder

165
399/378

Film (e.g., transparency)

26
399/379

Platen

199
399/380

Having cover

168
399/366

Unauthorized copy prevention

236
399/107

Having particular structure

572
399/126

Adjustment

80
399/110

Modular or displaceable

785
399/115

Charging unit

154
399/125

Clamshell type

209
399/123

Cleaning unit

213
399/119

Developing unit

870
399/120

New and waste toner container

466
399/122

Fixing unit

420
399/118

Optics

120
399/124

Paper path access

421
399/116

Photoconductive member

342
399/117

Drum mount

282
399/111

Process cartridge unit

1513
399/112

Color

201
399/113

Having subunit separation

468
399/114

Including cover

214
399/121

Transfer unit

401
399/108

Portable

55
399/109

Remanufacturing

272
399/130

Image formation

213
399/168

Charging

307
399/174

Contact

269
399/175

Brush

171
399/176

Roller

494
399/170

Corona

230
399/172

Having case

62
399/171

Having grid

186
399/173

Needle type

50
399/169

Having selection of area to be charged

52
399/148

Combined or plural functions by single component

56
399/149

Development and cleaning

210
399/150

Simultaneously

110
399/151

Combined with scanning

87
399/146

Contact exposure

7
399/222

Development

220
399/236

Applicator speed

70
399/234

Development prevention

41
399/235

Bias voltage

49
399/252

Dry development

313
399/265

Application member

142
399/287

Fiber brush

15
399/266

Having cloud-forming application

196
399/267

Magnetic brush

374
399/270

Having applied bias

244
399/271

Auxiliary electrode

42
399/268

Having sheet guide

17
399/272

Loading

219
399/277

Magnet

295
399/278

Web or belt

19
399/269

Plural

127
399/274

Regulating (e.g., doctor)

351
399/275

Having stationary magnet

121
399/276

Sleeve

302
399/273

Unloading (e.g., scraper)

122
399/279

Roller

332
399/286

Details

301
399/285

Having applied bias

303
399/280

Having concentric film

23
399/281

Loading

296
399/282

By magnetic brush

58
399/284

Regulating (e.g., doctor)

440
399/283

Unloading (e.g., scraper)

106
399/288

Web or belt

49
399/294

Cascade

11
399/295

Having electrode

8
399/253

Conditioning of toner

106
399/292

Fluidized bed

27
399/293

Having electrode

11
399/289

Having field curtain

42
399/254

Mixing

519
399/256

Auger

331
399/255

Having new toner

97
399/290

Powder cloud

40
399/291

Having electrode

93
399/257

Purging

155
399/264

Removing excess developer

134
399/258

Supplying new toner

883
399/262

Cartridge

984
399/263

Having internal rotary member

335
399/259

Diverse (e.g., carrier and toner)

81
399/260

Metering (regulating, gate, discharge ports)

408
399/261

Vibration

57
399/237

Liquid development

393
399/239

Application member (e.g., roller, belt)

172
399/240

Having applied bias

99
399/251

Drying (e.g., warming, heating)

67
399/238

Having dispensing

115
399/241

Having electrode

70
399/243

Flexible

7
399/244

Screen

14
399/245

Self-cleaning

20
399/242

Sequential

16
399/248

Immersion

20
399/250

Liquid carrier condensation

49
399/249

Removing excess developer (e.g., squeegee)

283
399/246

Sprayed

38
399/247

Fountain

28
399/223

Plural diverse (e.g., color)

405
399/224

Adding toner

48
399/233

Liquid

97
399/226

Plural applicators single position

86
399/227

Rotary type

342
399/228

Selectively active

173
399/230

By diverting toner

14
399/229

By magnetic means

26
399/225

Single applicator

29
399/231

Toner images overlapped

112
399/232

Opposite polarity

60
399/158

Display of developed image

33
399/177

Exposure

71
399/193

Binding offset

25
399/194

Composite

63
399/219

Fiber optics

42
399/178

Formation of color separation images

171
399/180

Having halftone screen

39
399/179

To plural photoconductive members

43
399/217

Full frame exposure (entire original at once)

11
399/195

Generating paper feed signal

35
399/181

Halftone image

60
399/182

Having image editing

49
399/186

Details of erase light

43
399/187

Edge or interframe erase

78
399/188

Copy blank leading edge

9
399/189

Cover position

17
399/192

Side edge lamps

8
399/191

Using exposure light

17
399/190

Variable size

25
399/183

Selectable area

73
399/184

Color

88
399/185

Touch pad

22
399/205

Having reference position (relative positioning)

47
399/218

Lens

59
399/220

Light source

140
399/221

Modifier (e.g., reflector, filter)

122
399/203

Selective or convertible

68
399/206

Slit exposure

108
399/215

By conveying original

20
399/216

By pivoting mirror

35
399/210

Damping or braking

39
399/207

Diaphragm, shutter, shading board

49
399/213

Movable platen

75
399/214

Lock or clamp

12
399/211

Scanning carriage parallel to original

128
399/212

Having half-rate carriage

45
399/208

Speed or acceleration control

80
399/209

Variable scanning (e.g., length)

51
399/204

Two-up copying

34
399/196

Variable magnification

111
399/199

Additional lens

17
399/198

Exposure adjustment

26
399/197

Having calculation

43
399/200

Having scanning modification

79
399/201

Lens positioning

44
399/202

Mirror or scanning carriage positioning

55
399/320

Fixing (e.g., fusing)

356
399/328

By heat and pressure

1013
399/329

Continuous web

951
399/330

Heated roller

604
399/334

Axial heat distribution

171
399/333

Composition or layers

596
399/331

Pressure rollers

278
399/332

Cyclically (e.g., with movement of copy)

48
399/335

By heat

266
399/338

Contact

51
399/336

Radiant, infrared, or microwave

179
399/337

Coordinated with sheet movement

34
399/339

By pressure (without heat)

95
399/340

By solvent

42
399/327

Cleaning of fixing member

244
399/321

Color

48
399/322

Having copy-handling during fixing

227
399/323

Stripping

259
399/341

Having treatment of image

289
399/342

Lamination

56
399/324

Offset prevention

177
399/325

Parting agent applicator

276
399/326

Cleaning member

67
399/139

Formation of master, photocopy-printer

40
399/133

Having layer separation (e.g., manifold imaging)

10
399/156

Having modification of latent image

41
399/157

To produce outline image

12
399/147

Having overlayer

27
399/134

Having photoconductive toner

9
399/155

Having reciprocating imaging member

25
399/154

Having transfer of latent image

43
399/135

Ion modulation (e.g., screen)

66
399/138

Operator adjusted density

101
399/137

Optical intermediate storage of original image

23
399/159

Photoconductive member

1139
399/162

Belt

249
399/165

Alignment or tensioning

219
399/164

Having backing support

97
399/163

Having nonuniform motion

18
399/167

Drive apparatus

759
399/166

Plate

22
399/161

Renewable layer

46
399/160

Selection of image frame area

52
399/131

Photoelectrophoretic

49
399/145

Plural copies from same latent image

47
399/144

Reader-printer

58
399/143

Selectively positive or negative

45
399/153

Simultaneous charging and exposure

38
399/152

Simultaneous exposure and development

23
399/136

Simultaneously with charge transfer

14
399/132

Thermoplastic deformation

15
399/140

To produce microimage

35
399/141

Film process head

13
399/142

Development

17
399/297

Transfer

389
399/308

By intermediate transfer member

677
399/309

To produce duplex

127
399/318

By pressure

136
399/298

Color

191
399/302

By intermediate transfer member

1188
399/303

Copy medium carrier (e.g., drum or belt)

431
399/304

Having gripper

55
399/305

Vacuum or pneumatic

52
399/300

From multiple positions

63
399/299

From plural photoconductive members (e.g., drums)

425
399/301

Registration

626
399/310

Electrostatic

145
399/311

Corona

80
399/312

Having belt transporting copy

107
399/314

Having applied bias

217
399/316

Having copy medium guide

191
399/317

Retractable

70
399/315

Having discharger (e.g., separation)

161
399/313

Roller or belt

456
399/306

From plural photoconductive members (e.g., duplex)

103
399/307

Having simultaneous fixing

186
399/319

Vibration

32
399/296

Treatment of developed image prior to transfer

225
399/91

Internal machine environment

83
399/92

Forced air circulation

483
399/93

Having filtering (e.g., ozone removal)

177
399/97

Humidity

71
399/98

Particle or contaminant control

303
399/102

Seal

192
399/103

Developer seal

363
399/105

Elastic material

126
399/104

Magnetic

100
399/106

Toner cartridge

383
399/99

Toner removal

197
399/100

Charging member (e.g., corona wire)

280
399/101

Transfer member

462
399/94

Temperature

183
399/96

Photoconductive member

42
399/95

Platen

13
399/75

Machine operation

219
399/79

Accounting

254
399/80

User access

179
399/90

Electrical connection

468
399/88

Having power supply

496
399/89

Supplying power to charger

130
399/82

Job mode

642
399/83

Having memory

169
399/85

Having mode change

301
399/86

Auto copy size or magnification

99
399/87

Having priority interrupt

117
399/84

Key sheet

80
399/81

Operator interface (e.g., display control panel)

851
399/76

Sequential control

98
399/77

Programmed

167
399/78

Reference signal (e.g., pulse train)

64
399/411

Miscellaneous

67
399/8

Remote monitoring

455
399/127

Supplemental electrophotographic process

60
399/128

Exposure or charging (e.g., fatigue treatment)

184
399/129

Of residual toner

100
 
 
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