|  | 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]

|  | G03F |
PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR (phototypographic composing devices Fulltext... Hierarchy... Expanded...B41B; photosensitive materials or processes for photographic purposes Fulltext... Hierarchy... Expanded...G03C; electrography, sensitive layers or processes Fulltext... Hierarchy... Expanded...G03G)

|  | G03F |
Note(s) In this subclass, the following terms or expressions are used with the meanings indicated: "photosensitive" means not only sensitive of electromagnetic radiation but also to corpuscular radiation; "photosensitive compositions" covers photosensitive substances, e.g. quinonediazides, and, if applicable, binders or additives; "photosensitive materials" covers the photosensitive compositions, e.g. photoresists, the bases carrying them and, if applicable, auxiliary layers. [5]

P:10 |  | G03F 1/00 |
Preparation of originals for the photomechanical production of textured or patterned surfaces (photomechanical processes in general Fulltext... Hierarchy... Expanded...G03F 7/00) [3]

|  | G03F 1/02 |
· | by photographic processes for production of originals simulating relief

|  | G03F 1/04 |
· | by montage processes

|  | G03F 1/06 |
· | from printing surfaces [5]

|  | G03F 1/08 |
· | Originals having inorganic imaging layers, e.g. chrome masks (Fulltext... Hierarchy... Expanded...G03F 1/12 takes precedence) [5]

|  | G03F 1/10 |
· | by exposing and washing out pigmented or coloured organic layers; by colouring macromolecular patterns [5]

|  | G03F 1/12 |
· | by exposing silver-halide-containing photosensitive materials or diazo-type photosensitive materials [5]

|  | G03F 1/14 |
· | Originals characterised by structural details, e.g. supports, cover layers, pellicle rings [5]

|  | G03F 1/16 |
· | Originals having apertures, e.g. for corpuscular lithography [5]

P:0 |  | G03F 3/00 |
Colour separation; Correction of tonal value (photographic copying apparatus in general Fulltext... Hierarchy... Expanded...G03B)

|  | G03F 3/02 |
· | by retouching

|  | G03F 3/04 |
· | by photographic means

|  | G03F 3/06 |
· · | by masking

|  | G03F 3/08 |
· | by photoelectric means

|  | G03F 3/10 |
· | Checking the colour or tonal value of separation negatives or positives

P:20 |  | G03F 5/00 |
Screening processes; Screens therefor

|  | G03F 5/02 |
· | by projecting methods (cameras Fulltext... Hierarchy... Expanded...G03B)

|  | G03F 5/04 |
· · | changing the screen effect

|  | G03F 5/06 |
· · | changing the diaphragm effect

|  | G03F 5/08 |
· · | using line screens

|  | G03F 5/10 |
· · | using cross-line screens

|  | G03F 5/12 |
· · | using other screens, e.g. granulated screen

|  | G03F 5/14 |
· | by contact methods

|  | G03F 5/16 |
· · | using grey half-tone screens

|  | G03F 5/18 |
· · | using colour half-tone screens

|  | G03F 5/20 |
· | using screens for gravure printing

|  | G03F 5/22 |
· | combining several screens; Elimination of moire

|  | G03F 5/24 |
· | by multiple exposure, e.g. combined processes for line photo and screen

P:30 |  | G03F 7/00 |
Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printed surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor (using photoresist structures for special production processes, see the relevant places, e.g. Fulltext... Hierarchy... Expanded...B44C, Fulltext... Hierarchy... Expanded...H01L, e.g. Fulltext... Hierarchy... Expanded...H01L 21/00, Fulltext... Hierarchy... Expanded...H05K) [3,5]

|  | G03F 7/004 |
· | Photosensitive materials (Fulltext... Hierarchy... Expanded...G03F 7/12, Fulltext... Hierarchy... Expanded...G03F 7/14 take precedence) [5]

|  | G03F 7/008 |
· · | Azides (Fulltext... Hierarchy... Expanded...G03F 7/075 takes precedence) [5]

|  | G03F 7/012 |
· · · | Macromolecular azides; Macromolecular additives, e.g. binders [5]

|  | G03F 7/016 |
· · | Diazonium salts or compounds (Fulltext... Hierarchy... Expanded...G03F 7/075 takes precedence) [5]

|  | G03F 7/021 |
· · · | Macromolecular diazonium compounds; Macromolecular additives, e.g. binders [5]

|  | G03F 7/022 |
· · | Quinonediazides (Fulltext... Hierarchy... Expanded...G03F 7/075 takes precedence) [5]

|  | G03F 7/023 |
· · · | Macromolecular quinonediazides; Macromolecular additives, e.g. binders [5]

|  | G03F 7/025 |
· · | Non-macromolecular photopolymerisable compounds having carbon-to-carbon triple bonds, e.g. acetylenic compounds (Fulltext... Hierarchy... Expanded...G03F 7/075 takes precedence) [5]

|  | G03F 7/027 |
· · | Non-macromolecular photopolymerisable compounds having carbon-to-carbon double bonds, e.g. ethylenic compounds (Fulltext... Hierarchy... Expanded...G03F 7/075 takes precedence) [5]

|  | G03F 7/028 |
· · · | with photosensitivity-increasing substances, e.g. photoinitiators [5]

|  | G03F 7/029 |
· · · · | Inorganic compounds; Onium compounds; Organic compounds having hetero atoms other than oxygen, nitrogen or sulfur [5]

|  | G03F 7/031 |
· · · · | Organic compounds not covered by group Fulltext... Hierarchy... Expanded...G03F 7/029 [5]

|  | G03F 7/032 |
· · · | with binders [5]

|  | G03F 7/033 |
· · · · | the binders being polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds, e.g. vinyl polymers [5]

|  | G03F 7/035 |
· · · · | the binders being polyurethanes [5]

|  | G03F 7/037 |
· · · · | the binders being polyamides or polyimides [5]

|  | G03F 7/038 |
· · | Macromolecular compounds which are rendered insoluble or differentially wettable (Fulltext... Hierarchy... Expanded...G03F 7/075 takes precedence; macromolecular azides Fulltext... Hierarchy... Expanded...G03F 7/012; macromolecular diazonium compounds Fulltext... Hierarchy... Expanded...G03F 7/021) [5]

|  | G03F 7/039 |
· · | Macromolecular compounds which are photodegradable, e.g. positive electron resists (Fulltext... Hierarchy... Expanded...G03F 7/075 takes precedence; macromolecular quinonediazides Fulltext... Hierarchy... Expanded...G03F 7/023) [5]

|  | G03F 7/04 |
· · | Chromates (Fulltext... Hierarchy... Expanded...G03F 7/075 takes precedence) [5]

|  | G03F 7/06 |
· · | Silver salts (Fulltext... Hierarchy... Expanded...G03F 7/075 takes precedence) [5]

|  | G03F 7/07 |
· · · | used for diffusion transfer [5]

|  | G03F 7/075 |
· · | Silicon-containing compounds [5]

|  | G03F 7/085 |
· · | Photosensitive compositions characterised by adhesion-promoting non-macromolecular additives (Fulltext... Hierarchy... Expanded...G03F 7/075 takes precedence) [5]

|  | G03F 7/09 |
· · | characterised by structural details, e.g. supports, auxiliary layers (supports for printing plates in general Fulltext... Hierarchy... Expanded...B41N) [5]

|  | G03F 7/095 |
· · · | having more than one photosensitive layer (Fulltext... Hierarchy... Expanded...G03F 7/075 takes precedence) [5]

|  | G03F 7/105 |
· · · | having substances, e.g. indicators, for forming visible images [5]

|  | G03F 7/11 |
· · · | having cover layers or intermediate layers, e.g. subbing layers [5]

|  | G03F 7/115 |
· · · | having supports or layers with means for obtaining a screen effect or for obtaining better contact in vacuum printing [5]

|  | G03F 7/12 |
· | Production of screen printing forms or similar printing forms, e.g. stencils

|  | G03F 7/14 |
· | Production of collotype printing forms

|  | G03F 7/16 |
· | Coating processes; Apparatus therefor (applying coatings to base materials in general Fulltext... Hierarchy... Expanded...B05; applying photosensitive compositions to the base for photographic purposes Fulltext... Hierarchy... Expanded...G03C 1/74)

|  | G03F 7/18 |
· · | Coating curved surfaces

|  | G03F 7/20 |
· | Exposure; Apparatus therefor (photographic printing apparatus for making copies Fulltext... Hierarchy... Expanded...G03B 27/00) [4]

|  | G03F 7/207 |
· · | Means for focusing, e.g. automatically (combination of positioning and focusing Fulltext... Hierarchy... Expanded...G03F 9/02; systems for automatic generation of focusing signals in general Fulltext... Hierarchy... Expanded...G02B 7/28; means for automatic focusing of projection printing apparatus Fulltext... Hierarchy... Expanded...G03B 27/34) [4]

|  | G03F 7/213 |
· · | Exposing with the same light pattern different positions of the same surface at the same time (Fulltext... Hierarchy... Expanded...G03F 7/207 takes precedence) [4]

|  | G03F 7/22 |
· · | Exposing sequentially with the same light pattern different positions of the same surface (Fulltext... Hierarchy... Expanded...G03F 7/207 takes precedence) [4]

|  | G03F 7/23 |
· · · | Automatic means therefor [4]

|  | G03F 7/24 |
· · | Curved surfaces

|  | G03F 7/26 |
· | Processing photosensitive materials; Apparatus therefor (Fulltext... Hierarchy... Expanded...Fulltext... Hierarchy... Expanded...G03F 7/12-G03F 7/24 take precedence) [3,5]

|  | G03F 7/28 |
· · | for obtaining powder images (Fulltext... Hierarchy... Expanded...G03F 3/10 takes precedence) [5]

|  | G03F 7/30 |
· · | Imagewise removal using liquid means [5]

|  | G03F 7/32 |
· · · | Liquid compositions therefor, e.g. developers [5]

|  | G03F 7/34 |
· · | Imagewise removal by selective transfer, e.g. peeling away [5]

|  | G03F 7/36 |
· · | Imagewise removal not covered by groups Fulltext... Hierarchy... Expanded...Fulltext... Hierarchy... Expanded...G03F 7/30-G03F 7/34, e.g. using gas streams, using plasma [5]

|  | G03F 7/38 |
· · | Treatment before imagewise removal, e.g. prebaking [5]

|  | G03F 7/40 |
· · | Treatment after imagewise removal, e.g. baking [5]

|  | G03F 7/42 |
· · | Stripping or agents therefor [5]

P:40 |  | G03F 9/00 |
Registration or positioning of originals, masks, frames, photographic sheets or textured or patterned surfaces, e.g. automatically (Fulltext... Hierarchy... Expanded...G03F 7/22 takes precedence; preparation of photographic masks Fulltext... Hierarchy... Expanded...G03F 1/00; within photographic printing apparatus for making copies Fulltext... Hierarchy... Expanded...G03B 27/00) [4]

|  | G03F 9/02 |
· | combined with means for automatic focusing (automatic focusing in general Fulltext... Hierarchy... Expanded...G02B 7/09; systems for automatic generation of focusing signals Fulltext... Hierarchy... Expanded...G02B 7/28) [4]