EP2726938A1 - Method for partially dyeing films - Google Patents
Method for partially dyeing filmsInfo
- Publication number
- EP2726938A1 EP2726938A1 EP12728201.0A EP12728201A EP2726938A1 EP 2726938 A1 EP2726938 A1 EP 2726938A1 EP 12728201 A EP12728201 A EP 12728201A EP 2726938 A1 EP2726938 A1 EP 2726938A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- film
- adhesive tape
- color
- dye bath
- films
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Classifications
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03C—PHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES; PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR, STEREO-PHOTOGRAPHIC PROCESSES; AUXILIARY PROCESSES IN PHOTOGRAPHY
- G03C11/00—Auxiliary processes in photography
- G03C11/18—Colouring
Definitions
- the invention relates to a process for partially coloring films, in which a black and white film is passed through a dye bath.
- the conservator will have a black and white version of the film as a negative or positive, as well as more or less well-preserved copies of the inked film.
- the task is now to produce a qualitatively high-quality version of the dyed film.
- various methods have been developed. In the so-called internegative process, a colored positive copy of the film which is as well as possible obtained is used to produce a color negative, and color-positive copies are produced from this color negative.
- a disadvantage of this method is that the mostly bleached original colors are reproduced, so that a restoration of the original color impression is not possible. Moreover, this process produces a color negative that is also undesirable in terms of museum preservation.
- a black-and-white negative is first prepared from an existing positive, and from this a color positive is produced by mixing color light during development.
- a disadvantage of this method is that the contrast is deteriorated, since both the white and the black image components are colored.
- US 1 787 824 A relates to a process for coloring sound films, in which the additional problem is that the soundtrack should not be colored in order not to disturb the sound transmission.
- the paint is applied via ink rollers and it is prevented by a cover tongue of the application of color on the soundtrack.
- the disadvantages of the job over ink rollers are the necessary process due to splices and the only externally applied paint layer, which is not incorporated into the gelatin layer.
- Various adhesive tapes are known from EP 1 719 808 A and from US 2003/0198785 A.
- the object of the invention is to provide a solution which avoids these disadvantages and which enables a professional and archive compliant 1: 1 reproduction of original colored positive films, so that the original impression is largely achieved.
- the layer side of the film is covered by an adhesive tape before the treatment in the dye bath, which completely covers the non-inked image sections.
- the covering of the non-inking image sections is the minimum condition, it can also be covered in other sections, such as the perforation.
- Essential to the present invention is the fact that the film can be dyed in one piece, so it does not have to be cut to achieve colored and non-dyed or differently colored sections.
- Another essential aspect of the invention is that there are great degrees of freedom in the selection of colors and shades. This means that even if there are only faded or poorly preserved color copies of a film, a color version can be made that is close to the original state. It is also possible to take into account changes in the projection technology, such as the different color temperature of the light sources of projection apparatus, in order ultimately to get the screen as true to life as possible, which corresponds to the original as possible in historical playback conditions. It is also essential that only a black and white negative is needed in this process, so that the process completely corresponds to a conservational point of view. Furthermore, it is of particular advantage if the adhesive tape is removed after the treatment in the dye bath. The removal should be done without residue. Damage to the film is avoided in this way.
- Another particularly favored embodiment provides that a contiguous film strip is partially covered in succession with an adhesive tape partially and then passed through a dye bath. In this way, as in the original provided, successively following scenes of a film can be colored differently without having to cut the film.
- Maintaining the negative in its original form is achieved, in particular, by coloring only the positive copy of the film.
- the adhesive tape covers only the image portion but leaves the perforation exposed. This makes it possible to use the perforation for transporting the film also during masking and removing the Abklebung, so that a precise transport is possible and the run length can be accurately detected.
- the film is being viraged with the 1st color. This means that the film goes through several baths in a converted development machine: i. Swelling bath to soften the gelatin layer
- the present invention enables the simple and faithful coloring of films with little effort and preservation of conservational considerations.
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Spectrometry And Color Measurement (AREA)
- Coloring (AREA)
- Laminated Bodies (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ATA961/2011A AT511681B1 (en) | 2011-06-30 | 2011-06-30 | PROCESS FOR PARTIALLY STAINING FILMS |
PCT/EP2012/061000 WO2013000694A1 (en) | 2011-06-30 | 2012-06-11 | Method for partially dyeing films |
Publications (1)
Publication Number | Publication Date |
---|---|
EP2726938A1 true EP2726938A1 (en) | 2014-05-07 |
Family
ID=46319703
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP12728201.0A Withdrawn EP2726938A1 (en) | 2011-06-30 | 2012-06-11 | Method for partially dyeing films |
Country Status (4)
Country | Link |
---|---|
US (1) | US20140205754A1 (en) |
EP (1) | EP2726938A1 (en) |
AT (1) | AT511681B1 (en) |
WO (1) | WO2013000694A1 (en) |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE110921C (en) * | ||||
US1787824A (en) | 1929-05-09 | 1931-01-06 | Eastman Kodak Co | Method and apparatus for tinting photographic film |
GB515674A (en) * | 1937-03-02 | 1939-12-11 | Walter Anders Von Gudenberg | Method of making coloured pictures from photographs |
FR833911A (en) * | 1937-07-06 | 1938-11-04 | Process for obtaining polychrome photographic prints | |
FR995661A (en) * | 1949-07-28 | 1951-12-05 | Process for coloring photographic prints | |
US3705800A (en) * | 1971-12-17 | 1972-12-12 | Eastman Kodak Co | Novel photographic processing compositions and improved processing using such compositions for preparing silver sound tracks |
US20030198785A1 (en) * | 2002-04-23 | 2003-10-23 | Young Ha Ahn | Cover tape to be overlaid on a carrier tape for carrying parts therewith |
KR20050023093A (en) * | 2003-08-29 | 2005-03-09 | 송오성 | Coloring of Titanium alloy using multilayered Titanium Oxides |
EP1719809A3 (en) * | 2005-05-06 | 2007-05-30 | Eastman Chemical Company | Pressure sensitive adhesive (PSA) laminates |
-
2011
- 2011-06-30 AT ATA961/2011A patent/AT511681B1/en not_active IP Right Cessation
-
2012
- 2012-06-11 WO PCT/EP2012/061000 patent/WO2013000694A1/en active Application Filing
- 2012-06-11 US US14/130,002 patent/US20140205754A1/en not_active Abandoned
- 2012-06-11 EP EP12728201.0A patent/EP2726938A1/en not_active Withdrawn
Non-Patent Citations (1)
Title |
---|
See references of WO2013000694A1 * |
Also Published As
Publication number | Publication date |
---|---|
WO2013000694A1 (en) | 2013-01-03 |
AT511681A1 (en) | 2013-01-15 |
AT511681B1 (en) | 2015-05-15 |
US20140205754A1 (en) | 2014-07-24 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
17P | Request for examination filed |
Effective date: 20140123 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR |
|
17Q | First examination report despatched |
Effective date: 20140630 |
|
DAX | Request for extension of the european patent (deleted) | ||
GRAP | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOSNIGR1 |
|
INTG | Intention to grant announced |
Effective date: 20160202 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
18D | Application deemed to be withdrawn |
Effective date: 20160614 |