PTO Manual of Classification for US patents

PTO Manual of Classification for US patents

What follows are the subclasses from one class of the Manual of Classification for US patents. As you scroll through the list and encounter a class/subclass of interest, you can jump back to the top and retrieve patent titles by entering the class/subclass in the box below.


Enter a class/subclass code here to get a list of patent titles. Use any of the following forms:
363-131 121-55A 14-.5
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Class Number: 355
 Class Title: PHOTOCOPYING

Subclass  Subclass
Number    Title

  1       INCLUDING FIBER OPTICS
  2       HOLOGRAM, SEISMOGRAM, GRAPH OR SCALE COPYING
  200     ELECTROPHOTOGRAPHY
  201     .Unauthorized copy prevention
  202     .Combined with diverse subject matter
  203     .Diagnostic testing
  204     ..Computer controlled
  205     ...Of malfunction
  206     ....Display, warning or shutdown
  207     ....Correction of malfunction
  208     ...With alteration (e.g., optimization)
  209     ...With indicator
  210     .Latent image formation
  211     ..Particular photoresponsive member
  212     ...Web or belt
  213     ....Drum supported and fed
  214     ..With control of image contrast
  215     ..With airborne contaminant control
  216     ..With charge sensing to terminate charging
  217     ..With transfer of electrostatic image (TESI)
  218     ..With edge or margin feature including erasure or image
             shifting
  219     ..Charging or discharging
  220     ...With simultaneous light imaging or illumination
  221     ...Corona
  222     ....Alternating current
  223     ....Negative polarity
  224     ....With fringe or needle-like electrodes
  225     ....With control grid (e.g., scorotron)
  226     ....Bipolar
  227     ...Nonuniform
  228     ..Illumination
  229     ...Light source
  230     ...Object (e.g., document) holder
  231     ....Platen cover
  232     ...Projection
  233     ....Scanning
  234     .....With movable platen (including platen drive and positioning
                means)
  235     .....With drive and positioning means for movable scanning
                carriage of optical projection means
  236     .....With vibration damping means
  237     .....Lens strip
  238     .....Fiber optics
  239     .....Line or half-tone image
  240     .....Fresnel lens
  241     ....Full frame exposure
  242     ....Reflex exposure
  243     ....With variable magnification
  244     ....Composite imaging
  245     .Latent image development
  246     ..With developed image contrast/density control (e.g., by tonerr
             concentration control, developing electrode bias, etc.)
  247     ..Powder cloud
  248     ...Flat plate
  249     ...Cloud charging
  250     ..Fibrous brush
  251     ..Magnetic brush
  252     ...Magnetic belt
  253     ...Loading of brush
  254     ..Cascade
  255     ..Fluidized bed
  256     ..Liquid
  257     ...Electrophoretic
  258     ...Polar ink
  259     ..Donor (e.g., using a roller as a donor)
  260     ..Container
  261     ..Electrode (e.g., bias electrode)
  262     ...Segmented or perforated
  263     ...Flexible
  264     ...Self-cleaning
  265     ...Variable applied electric potential
  266     ..Enhancement of portions of the image
  267     ..Simultaneous positive and negative visible image formation
  268     ..Reversal of light and dark portions of the visible image
  269     ..Simultaneous development and cleaning
  270     ..Single device for developing and cleaning
  271     .Developed image transfer or display
  272     ..Multiple transfer
  273     ..Treatment to enhance transfer
  274     ..Electrostatic transfer of toner
  275     ...With conductive transfer web
  276     ..A.C. field transfer
  277     ..Pressure transfer
  278     ...With lamination
  279     ...With heat
  280     ...With adhesive
  281     ....Including a transfer web
  282     .Image fixing
  283     ..With cleaning of image fixing means
  284     ..Offset prevention
  285     ..Heat fixation
  286     ...Radiation
  287     ....Microwave
  288     ....Flash heating
  289     ...Conduction
  290     ....With pressure means
  291     ...Convection
  292     ..With vapor fixative
  293     ..With liquid fixative
  294     ..With solid fixative
  295     ..With pressure
  296     .Cleaning of photoresponsive imaging surface
  297     ..With plural diverse cleaning means
  298     ..With handling of cleaned material
  299     ..Blade
  300     ..Web
  301     ..Brush
  302     ...With brush scraper
  303     ...With electrostatic assistt
  304     ...Involving a filter bag
  305     ...Magnetic
  306     ..Cleaning beads
  307     ..Liquid
  308     .Document handling (including counting)
  309     ..Of feed stock
  310     ...With means for cutting feed stock
  311     ...With different physical characteristics (e.g., size, shape,
              stiffness, transparency, color, etc.)
  312     ...With pneumatic means
  313     ...With mode change
  314     ....Dominant mode with interrupt
  315     ...With copy substrate stripping means
  316     ..Including sheet tracking
  317     ..Including sheet registration
  318     ..Including sheet inverting
  319     ...Duplex copy
  320     ....Duplex original
  321     ..Including delivery or collection
  322     ...Stacking or imbricating
  323     ...Sorting or collating
  324     ...Fastening or binding
  325     ...Interleaving
  326 R   .Colored copy production
  326 M   ..Microcapsules
  326 K   ...Mask original
  326 P   ...Pressure developing
  327     ..Full color
  328     ..With highlighting means
  18      PROJECTION PRINTING AND COPYING CAMERAS
  19      .Combined with or convertible to a contact printer
  20      .With cathode ray tube for light source
  21      .Collapsible or portable
  22      .Stereoscopic
  23      .Copying both sides of original
  24      ..Duplex
  25      ..Book page copying
  26      .Photographing on both sides of photo-sensitive paper
  27      .With developing
  28      ..And film severing
  29      .With film severing
  30      .With temperature or foreign particle control
  31      .Copying sound record
  32      .Multicolor picture
  33      ..Lenticular film
  34      ...Including detailed diaphragm
  35      ..Regulating light intensity or exposure time
  36      ...Including electromagnet
  37      ...Plural lamps
  38      ...Including
  39      .Tilting
  40      .Identifying, composing, or selecting
  41      ..Including photocell
  42      ..Including electromagnet
  43      ..Including reflector between original and photosensitive paper
  44      .With focusing or projection screen
  45      ..Reflector in optical path
  46      .Plurall
  47      .Image transferred to or from curved surface
  48      ..Original moves continuously
  49      ...Reflector between original and photo-sensitive paper
  50      .Original moves continuously
  51      ..Reflector between original and photo-sensitive paper
  52      .Distortion introducing or rectifying
  53      .Step and repeat
  54      .Producing plural rows of pictures on photosensitive paper
  55      .Focus or magnification control
  56      ..Automatic or semiautomatic focusing when varying image size
  57      ...Reflector between original and photo-sensitive paper
  58      ...Including a cam or a screw with nonuniform pitch
  59      ....And an indicator or scale
  60      ..Reflector between original and photo-sensitive paper
  61      ..Including indicator or scale
  62      ...Vertical optical path
  63      ..Vertical optical path
  64      .Image transferred from individual documents to film strip
  65      ..Reflector between original and photo-sensitive paper
  66      .Reflector between original and photo-sensitive paper
  67      .Illumination systems or details
  68      ..Including photocell or phototube
  69      ..Electricity to lamp controlled
  70      ..Plural lamps
  71      ..Including shutter, diaphragm, polarizer or filter
  72      .Detailed holder for photosensitive paper
  73      ..Including vacuum or fluid pressure
  74      ..Including adjustable or selective masking frame
  75      .Detailed holder for original
  76      ..Including vacuum, fluid or spring pressure
  77      .Methods
  78      CONTACT PRINTING
  79      .SUPERIMPOSED CARRIERS (e.g., montage or combination printing)
  80      .Localized contrast modification (e.g., dodging or fading)
  81      ..With scanning
  82      .Book page copying
  83      .Light monitoring exposure control
  84      .With scanning
  85      .Exposing on sensitized printing press plate or cylinder (e.g.,
            photocomposers)
  86      ..Step and repeat
  87      ...Fluid pressure
  88      .Multicolor printing
  89      .Plural exposure stations or plural machines
  90      ..With plural webs of indeterminate length (e.g., motion picture
             film)
  91      .Fluid pressure retention of carrier and receiver in exposure
            position
  92      ..Air-inflated cushion
  93      ..Pivoted frame
  94      ..With pump
  95      .Step and repeat
  96      ..Strip receiver
  97      .Machine (i.e., having at least partly automatic feed)
  98      ..Sound track printing
  99      ..With flat exposure station structure
  100     ...With further developing processing
  101     ...With shutterss
  102     ...Repeated printing from a carrier
  103     ...Continuous running
  104     ..With cylindrical or curved exposure station structure
  105     ...Light lowered into vertical cylinder
  106     ...With further developing processing
  107     ....With intermediate printing material
  108     ...Continuous running
  109     ....Repeated printing from a carrier
  110     ....Rotating exposure station cylinder
  111     ....Indeterminate-length carrier and receiver
  112     .Print counting and marking
  113     .Light boxes
  114     ..Transfer of plural images
  115     ..With exposure timing
  116     ..Foot-operated platen or shutter
  117     ..Cylindrical or curved exposure station
  118     ..Divided or flexible platen
  119     ..Indirect illumination
  120     ..Platen-controlled illumination circuit
  121     ..With shutter
  122     .Frames
  123     ..Strip film
  124     ..With shutters
  125     ..With diffusing or masking (e.g., vignetting)
  126     ...Adjustable parameters
  127     ..Transfer of plural images
  128     ..With platen
  129     ...Divided platen
  130     ....With closing spring bias
  131     ...Attached platen
  132     .Methods
  133     MISCELLANEOUS