EP0119836A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Colour printing process and equipment
Assignee: Individual
•
Filing: 1984-03-15
•
Granted: —
•
Expires: 2004-03-15
Abstract
Abstract A kit for use in «laying out» coloured printwork and printing off accurate and true reproductions, includes a chart, Figure 5, in which the horizontal rows A - E each represent certain choice of percentage screens for the chosen process colours. The vertical columns 1-12 represent the different possible combinations of these process colours with black as an optional extra. Thus all the specimen colours shown in any horizontal row can be obtained with the same set of specified percentage screens. The kit also includes preprinted colour sheets or tints corresponding to the colours on the charts and these tints are cut up to make the graphic art layout. The final colour printing process then uses the same selected process colours with the specified percentage screens.
Inventors
- 👤 Gordon Leslie Price Phillips
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-09 11:28
CPC Classifications
G; G03; G03F; G03F3/00; G03F3/10; G03F3/101; B; B41; B41M; B41M1/00; B41M1/14; B41M1/18
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
95 words
A kit for use in preparing and printing coloured art work, comprising a collection of small process colour reference "tints" printed from selected combinations of three standard process colours, with optional black, at selected percentage densities, the reference tints being arranged in groups with all the tints in one group having the same percentage densities, but varying combinations of process colours, and each of the tints identified by a reference index, the tint including also larger "cut-out tints" identifiable with individual reference tints and each of exactly the same tone as the corresponding reference tint.
Claim 2
Dependent Claim
95 words
A kit for use in preparing and printing coloured art work, comprising a collection of small process colour reference "tints" printed from selected combinations of three standard process colours, with optional black, at selected percentage densities, the reference tints being arranged in groups with all the tints in one group having the same percentage densities, but varying combinations of process colours, and each of the tints identified by a reference index, the tint including also larger "cut-out tints" identifiable with individual reference tints and each of exactly the same tone as the corresponding reference tint.
Claim 3
Dependent Claim
31 words
A kit according to Claim 1, in which the small reference tints are arranged also in sub-groups identifiable with reference to particular selections and combinations of process colours, with optional black.
Claim 4
Dependent Claim
43 words
A kit according to Claim 1 or Claim 2, in which the reference tints are arranged on charts in orthogonal rows and columns, of which one represents selected percentage densities, or while the other represents selected combinations of process colours, with optional black.
Claim 5
Dependent Claim
23 words
A kit according to any of the preceding claims, in which the reference tints are printed on two or more different surface qualities.
Claim 6
Dependent Claim
21 words
A kit according to any of Claims 1 to 4, in which substantially all the tints are free of Moire patterns.
Claim 7
Dependent Claim
24 words
A kit according to any of the preceding claims, in which there are not more than 500 different tints, all distinguishable from each other.
Claim 8
Dependent Claim
28 words
A kit according to any of the preceding claims, in combination with means to identify the standard process colours adopted for the tints and for the final printwork.
Claim 9
Dependent Claim
31 words
A kit according to any of the preceding claims, in combination with means to identify the shapes, patterns and densities of the dots or other shapes in the percentage density screens.
Claim 10
Independent Claim
74 words
A method of creating coloured art work from a kit according to any of Claims 1 to 8, in which tones are selected from the reference tints, and areas from the corresponding cut-out tints are cut out to build up the art work, and in which the final colour reproduction printwork is produced using percentage screens and process colours exactly as identified by the reference index for each selected tint of the art work.
Claim 11
Dependent Claim
104 words
A method of producing colour printwork from a graphic colour layout created by the method of Claim 9 and using a kit as defined in any of Claims 1 to 8, in which standard process colours are selected as specified in the kit, selected percentage screens for the individual process colours are selected or generated from the groupings of the reference tints, colour litho plates are created photographically by use of such screens, or an equivalent digital scanning system, and the final colour printing is performed on the same selected surfaces as specified in the kit and using exactly the same specified printing parameters.
Claim 12
Dependent Claim
20 words
Coloured printwork when produced by means of a kit or a process as defined in any of the proceeding claims.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.