|  | G |
SECTION G — PHYSICS

|  | G |
Note(s) In this section, the following term is used with the meaning indicated: "variable" (as a noun) means a feature or property (e.g., a dimension, a physical condition such as temperature, a quality such as density or colour) which, in respect of a particular entity (e.g., an object, a quantity of a substance, a beam of light) and at a particular instant, is capable of being measured; the variable may change, so that its numerical expression may assume different values at different times, in different conditions or in individual cases, but may be constant in respect of a particular entity in certain conditions or for practical purposes (e.g., the length of a bar may be regarded as constant for many purposes). Attention is drawn to the definitions of terms or expressions used, appearing in the notes of several of the classes in this section, in particular those of "measuring" in class Fulltext... Hierarchy... Expanded...G01 and "control" and "regulation" in class Fulltext... Hierarchy... Expanded...G05. Classification in this section may present more difficulty than in other sections, because the distinction between different fields of use rests to a considerable extent on differences in the intention of the user rather than on any constructional differences or differences in the manner of use, and because the subjects dealt with are often in effect systems or combinations, which have features or parts in common, rather than "things", which are readily distinguishable as a whole. For example, information (e.g., a set of figures) may be displayed for the purpose of education or advertising (Fulltext... Hierarchy... Expanded...G09), for enabling the result of a measurement to be known (Fulltext... Hierarchy... Expanded...G01), for signalling the information to a distant point or for giving information which has been signalled from a distant point (Fulltext... Hierarchy... Expanded...G08). The words used to describe the purpose depend on features that may be irrelevant to the form of the apparatus concerned, for example, such features as the desired effect on the person who sees the display, or whether the display is controlled from a remote point. Again, a device which responds to some change in a condition, e.g., in the pressure of a fluid, may be used, without modification of the device itself, to give information about the pressure (Fulltext... Hierarchy... Expanded...G01L) or about some other condition linked to the pressure (another subclass of class Fulltext... Hierarchy... Expanded...G01, e.g., Fulltext... Hierarchy... Expanded...G01K for temperature), to make a record of the pressure or of its occurrence (Fulltext... Hierarchy... Expanded...G07C), to give an alarm (Fulltext... Hierarchy... Expanded...G08B), or to control another apparatus (Fulltext... Hierarchy... Expanded...G05). The classification scheme is intended to enable things of a similar nature (as indicated above) to be classified together. It is therefore particularly necessary for the real nature of any technical subject to be decided before it can be properly classified.

INSTRUMENTS

|  | G03 |
PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY (reproduction of pictures or patterns by scanning and converting into electrical signals Fulltext... Hierarchy... Expanded...H04N) [4]

|  | G03 |
Note(s) In this class, the following terms are used with the meaning indicated: "records" means photographs or any other kind of latent, directly-visible or permanent storage of pictorial information, which consist of an imagewise distribution of a quantity, e.g. an electric charge pattern, recorded on a carrier member; "optical" applies not only to visible light but also to ultra-violet or infra-red radiations. [4]

|  | G03D |
APPARATUS FOR PROCESSING EXPOSED PHOTOGRAPHIC MATERIALS (apparatus specially adapted for photomechanical production of textured or patterned surfaces Fulltext... Hierarchy... Expanded...G03F); ACCESSORIES THEREFOR (photosensitive materials or processes for photographic purposes Fulltext... Hierarchy... Expanded...G03C; electrographic, electrophotographic, or magnetographic methods or apparatus Fulltext... Hierarchy... Expanded...G03G)

|  | G03D |
Subclass index
APPARATUS FOR PROCESSING EXPOSED MATERIAL |
Liquid; gas; diffusion processing apparatus | 3/00, 5/00; 7/00; 9/00
Reversal processing apparatus | 11/00
Other apparatus and accessories | 13/00
APPARATUS FOR TREATING PROCESSED MATERIAL | 15/00
DARK-ROOMS | 17/00

P:30 |  | G03D 3/00 |
Liquid processing apparatus involving immersion; Washing apparatus involving immersion (Fulltext... Hierarchy... Expanded...G03D 9/00, Fulltext... Hierarchy... Expanded...G03D 11/00 take precedence)

|  | G03D 3/02 |
· | Details of liquid circulation

|  | G03D 3/04 |
· · | Liquid agitators (in general Fulltext... Hierarchy... Expanded...B01F)

|  | G03D 3/06 |
· · | Liquid supply; Liquid circulation outside tanks

|  | G03D 3/08 |
· | having progressive mechanical movement of exposed material

|  | G03D 3/10 |
· · | for plates, films, or prints held individually

|  | G03D 3/12 |
· · | for plates, films, or prints spread onto belt conveyers [2]

|  | G03D 3/13 |
· · | for long films or prints in the shape of strips, e.g. fed by roller assembly [2]

|  | G03D 3/14 |
· · · | with means for taking into account of elongation or contraction of films

|  | G03D 3/16 |
· | Treating exposed material in original holder

P:40 |  | G03D 5/00 |
Liquid processing apparatus in which no immersion is effected; Washing apparatus in which no immersion is effected (Fulltext... Hierarchy... Expanded...G03D 9/00, Fulltext... Hierarchy... Expanded...G03D 11/00 take precedence; application of liquids in general Fulltext... Hierarchy... Expanded...B05)

|  | G03D 5/02 |
· | using rupturable ampoules of liquid

|  | G03D 5/04 |
· | using liquid sprays

|  | G03D 5/06 |
· | Applicator pads, rollers, or strips [2]

P:10 |  | G03D 7/00 |
Gas processing apparatus

P:20 |  | G03D 9/00 |
Diffusion development apparatus

|  | G03D 9/02 |
· | using rupturable ampoules of liquid

P:0 |  | G03D 11/00 |
Reversal processing apparatus

P:50 |  | G03D 13/00 |
Processing apparatus or accessories therefor, not covered by groups Fulltext... Hierarchy... Expanded...Fulltext... Hierarchy... Expanded...G03D 3/00-G03D 11/00

|  | G03D 13/02 |
· | Containers; Holding-devices

|  | G03D 13/04 |
· · | Trays; Dishes; Tanks

|  | G03D 13/06 |
· · · | Light-tight tanks with provision for loading in daylight

|  | G03D 13/08 |
· · | Devices for holding exposed material; Devices for supporting exposed material

|  | G03D 13/10 |
· · · | Clips (Fulltext... Hierarchy... Expanded...G03D 13/14 takes precedence)

|  | G03D 13/12 |
· · · | Frames (Fulltext... Hierarchy... Expanded...G03D 13/14 takes precedence)

|  | G03D 13/14 |
· · · | for holding films in spaced convolutions

P:60 |  | G03D 15/00 |
Apparatus for treating processed material

|  | G03D 15/02 |
· | Drying; Glazing (combined with processing apparatus Fulltext... Hierarchy... Expanded...Fulltext... Hierarchy... Expanded...G03D 3/00-G03D 13/00; drying in general Fulltext... Hierarchy... Expanded...F26B)

|  | G03D 15/04 |
· | Cutting; Splicing

|  | G03D 15/06 |
· | Applying varnish or other coating

|  | G03D 15/08 |
· | Flattening prints

|  | G03D 15/10 |
· | Mounting, e.g. of processed material in a frame (frames specially adapted for projection Fulltext... Hierarchy... Expanded...G03B 21/64)

P:70 |  | G03D 17/00 |
Dark-room arrangements not provided for in the other groups of this subclass; Portable dark-rooms