US1841653A - Process for developing positive diazo prints - Google Patents

Process for developing positive diazo prints Download PDF

Info

Publication number
US1841653A
US1841653A US299042A US29904228A US1841653A US 1841653 A US1841653 A US 1841653A US 299042 A US299042 A US 299042A US 29904228 A US29904228 A US 29904228A US 1841653 A US1841653 A US 1841653A
Authority
US
United States
Prior art keywords
developing
prints
diazo
liquid
film
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.)
Expired - Lifetime
Application number
US299042A
Other languages
English (en)
Inventor
Lodewijk Pieter Frans Grinten
Karel Jan Josef Van De Grinten
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Application granted granted Critical
Publication of US1841653A publication Critical patent/US1841653A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • G03C5/00—Photographic processes or agents therefor; Regeneration of such processing agents
    • G03C5/18—Diazo-type processes, e.g. thermal development, or agents therefor
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03D—APPARATUS FOR PROCESSING EXPOSED PHOTOGRAPHIC MATERIALS; ACCESSORIES THEREFOR
    • G03D5/00—Liquid processing apparatus in which no immersion is effected; Washing apparatus in which no immersion is effected
    • G03D5/06—Applicator pads, rollers or strips
    • G03D5/067—Rollers

Definitions

  • van cler- Grlnten By '0- Attorney Patented Jan. 19, 1932 UNITED STATES PATENT OFFICE LODHWIJ'K 2mm MS van mm GBINTEN AND KARE JAIN JOSE! van nan GBIN'IEN,
  • Reaction takes place mostly with the co-operation o alkalis.
  • a film containing a diazo compound and generally disposed on aper is exposed to light under a transparent image, drawin or tracing, so that the diazo com ound is ecomposed on those areas of the lm which are reached by light.
  • An.azo dye is formed in the areas which are unaffected by light (and in which the diazo compound has remained unaltered) by treating the exposed film with an azo-dye component and alkali, while the areas which have been exposed to light remain colourless when treated in this manner.
  • the image is simultaneously fixed, because after being subjected to this treatment (which may be also considered as a developing treatment) the image-forming areas (now containing a dye) as well as the background reached by light, are stable under any further action thereof.
  • the positive diazorinting process does not involve a separate ing operation, which is necessary in most of the other photographic processes and which usually consists in removing either non-decomposed light-sensitive initial materials or certain substances formed by the action of light.
  • the developing tanks must therefore he often in the open and the prints developed smell of ammonia for a long time.
  • an extremely thin layer of an alkaline liquid (which if necessary may contain an azo-d e component) is uniformly spread over the whole area to be developed. Friction may be avoided, in which case the procedure con sists in applying an extremely thin layer of the developing liquid on the surface to be developed. This makes it possible:
  • This apparatus which is of extremely simple character, comprises two vertically superposed and rubber-covered rolls a and b, the lower roll 5 revolving in a trough 0 containing the developing liquid and the upper roll bearing on the lower one by gravity or being pressed (hard when necessary) thereon by suitable means such as for example screws (0) acting upon the bearings of the roll.
  • the lower roll is driven while the upper roll is preferably moved at the same peripheral velocity so that there is no friction at the line of contact.
  • the lower rubber roll 6 collects, while rotating. developing liquid from the trough c and l'fli-I V ⁇ 'S it to the line of contact of the two rolls. Here the liquid is practically entirely retained and flows back uniformly.
  • This extremely simple apparatus comprises moreover a small table d disposed in front of the upper roll and fitted with a simple guiding and flattening device 8 to prevent creases from being formed.
  • a stripper may be advantageously provided to prevent the paper from adhering to the rolls.
  • This stripper may be constituted by blades f projecting as far as the grooves g of the rolls.
  • this simple apparatus may be replaced by smaller, sim ler and cheaper means with the aid of whic it is likewise possible to provide the light print with a uniform thin layer of developing li uid.
  • he developers which may be used according to this invention are aqueous solutions of 35 alkalis or alkaline-reacting substances, mixed if necessary with azo-dye components such as phloroglucinol, resorcinol, resorcinie acids, naphthols, phenols, naphthol-sulphonic acids and the like. Should the light-sensitive film be devoid of substances preventing the prints from turning yellow, such substances may also be added to the developer.
  • the substances which prevent the prints from turning yellow may be incorporated in the light-sensitive film as well as in the developing liquid.
  • reducing substances which are stable in an acid medium are preferably used in the. lightsensitive film and those which are stable in an alkali medium are used in the developing liquid.
  • the alkaline substances used may advantageously be potassium carbonate, sodium carbonate and ammonium carbonate (the latter not so much to be recommended because it has a smell of ammonia) preferably mixed with buffer salts such as secondary phosphates, secondary citrates and generally salts of polyvalent weak acids and the like.
  • Bufl'er salts are salts by which the intensity of the alkaline reaction is decreased without affecting the potential alkaline reaction, especially salts of polyvalent acids, such as phosphoric acid, citric acid and the like, and salts having a neutral reaction, such as secondary sodium phosphate; which salt, for instance, if added to an alkali solution, forms tertiary phosphate.
  • Said salt has an alkaline reaction, but in the presence of an excess of secondary salt the concentration of the OH-ions, which causes the intensity of the alkaline reaction, is very considerably decreased with respect to the original alkali solution and yet its alkaline action (capacity 1 of neutralizing acids) remains the same.
  • a wetting agent such as alcohol, glycerine, Turkey-red oil and the like may be added to the developing liquid.
  • Ewample 1.-Prints obtained by exposing diazo-printing paper the light-sensitive film of which contains 1.dimethylamino.2.chlorobenzene.4.diazonium chloride, or 4.diethylamino-benzol-diazonium chloride are printed with a developer by bein guided between the rubber-covered rolls escribed in the foregoing.
  • the said developer is an aqueous solution of 20 parts by weight of otassium carbonate, 30 arts by weight of 'sodium phosphate an 1.2 parts by weight of phloroglucinol, so that the print is developed. Positive images are thus obtained in dark to black colour on a light background.
  • the 1.2 parts by weight of phloroglucinol may be rep aced by 4 parts by weight of resorcinol, 5 parts by weight of fl-naphthol, 5 parts by weight of B-oxy-naphthoic acid anilide, 3 parts by weight of 2.7.dioxynapthaline and the like. These are then dissolved in quantities of soda lye sufficient for dissolution and yield images in various dark colours.
  • the otassium carbonate may be replaced by so ium carbonate or ammonium carbonate while disodium phosphate may be replaced by disodium citrate or the like.
  • the following may be added to the developer to prevent t e print from turning yellow: 0.4% of formalin or 1% of urotropin and the like' or 5% of glucose, 2% of sodium lactate, 0.1% of pyrogallol.
  • the uniform spreading of the developer on the pa r is assisted with 5% of methylated alco 01 or 3% of glycerine or 1% of T urkey-red oil and the like.
  • Example 3 thin layer of a developing liquid constituted by an aqueous solution of 40 parts by weight of potassium carbonate and 60 parts by weight of disodium phosphate is spread as in Example 1 on prints obtained by exposing diazo printing papers containing 1.5 parts by weight of 2.7 .dioxynaphthaline and 3% of oxalic acid to 5 parts by weight of 1.dimethylamino.3.5.xylol.4.diazonium chlorostannate; or 0.5 parts by weight of phloroglucinol and 3% of oxalic acid, or 1.5 parts by weight of triketohexamethylenetrioxym, 0.3 parts by weight of hydroxylamine chloride and 2 parts by weight of tartaric acid to 5 arts by weight of 1.dimethylamino.3.5.x lo .4.diazonium chlorostannate; or the hy roxylamine compound of 0.2 parts by weight of phlorogluclnol and two parts by wei ht of tart
  • Example 4 Prints obtained by exposing diazo prlnt papers made of diazo anhydrides with azo dye components are printed as in Examples 1, 2 or 3 and treated with a developer as in Example 3. All methods of printing described in Example 1 are applicable to this example.
  • the process for developing direct positive diazo prints which consists in impressing an alkaline liquid containing an azo-dyestufl component in the form of a uniformly thin film upon an exposed surface having a diazo compound therein, said film containing the azo-dyestuff component in an amount not substantially in excess of that required to couple with the diazo compound.
  • the process for developing direct positive diazo prints which consists in saturating throughout its entire area the exposed surface of said prints with a developing liquid containing a non-volatile alkali and a buffer salt by momentarily wetting the exposed surface with an excess of said developing liquid and removing the excess immediately thereafter, so as to depose a uniformly thin film of said liquid to said surface, the quantity of the developing liquid contained in the film being substantially corresponding to that required to effect development of said surface.
  • the process for developing direct positive diazo prints which consists in saturating throughout its entire area the exposed surface of said prints with a developing liquid containing a non-volatile alkaline substance and a reducing agent non-decomposable by alkali by momentarily wetting the exposed surface with an excess of said developing liquid and removing the excess immediately thereafter, so as to depose a uniformly thin film of said liquid to said surface, the quantity of the developing liquid contained in the film being substantially corresponding to that required to effect development of said surface.
  • the process for developing direct positive diazo prints which consists in saturating throughout its entire area the exposed surface of said prints with a developing liquid containing a non-volatile alkali, a buffer salt and an azodyestulf component by momentarily wetting the exposed surface with an excess of said developing liquid and removing the excess immediately thereafter, so as to depose a uniformly thin film of said liquid to said surface, the quantity of the developing liquid contained in the film being substantially corresponding to that required to effect developmentof said surface.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Non-Silver Salt Photosensitive Materials And Non-Silver Salt Photography (AREA)
  • Heat Sensitive Colour Forming Recording (AREA)
US299042A 1927-08-22 1928-08-11 Process for developing positive diazo prints Expired - Lifetime US1841653A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL38033 1927-08-22

Publications (1)

Publication Number Publication Date
US1841653A true US1841653A (en) 1932-01-19

Family

ID=19750131

Family Applications (1)

Application Number Title Priority Date Filing Date
US299042A Expired - Lifetime US1841653A (en) 1927-08-22 1928-08-11 Process for developing positive diazo prints

Country Status (6)

Country Link
US (1) US1841653A (fr)
BE (1) BE353508A (fr)
DE (1) DE589875C (fr)
FR (1) FR658977A (fr)
GB (1) GB295993A (fr)
NL (1) NL27513C (fr)

Cited By (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2524818A (en) * 1946-06-25 1950-10-10 Joseph W Mchugh Light-sensitive print development apparatus
US2563342A (en) * 1947-01-28 1951-08-07 Polaroid Corp Photographic product and process
US2565376A (en) * 1947-02-19 1951-08-21 Polaroid Corp Photographic positive-producing light sensitive element and process
US2584030A (en) * 1947-02-07 1952-01-29 Polaroid Corp Light sensitive silver halide photographic product for image transfer and process utilizing the same
US2590899A (en) * 1945-12-29 1952-04-01 Walter O Snelling Apparatus for the dry development of diazotype photographic paper
US2623821A (en) * 1948-07-14 1952-12-30 Calico Printers Ass Ltd Photographic development of color on textile and other materials
US2644756A (en) * 1947-02-08 1953-07-07 Polaroid Corp Photographic process for forming a positive transfer image
US2647049A (en) * 1947-02-25 1953-07-28 Polaroid Corp Photographic element for color photography and a process of producing multicolor pictures
US2652759A (en) * 1949-11-25 1953-09-22 Polaroid Corp Apparatus and process for treating light-sensitive materials with liquid
US2653527A (en) * 1947-02-19 1953-09-29 Polaroid Corp Process for treating photosensitive materials by spreading thereon a layer of processing liquid and apparatus for performing said process
US2653872A (en) * 1947-01-28 1953-09-29 Polaroid Corp Photographic product comprising a rupturable container carrying a liquid for processing said product
US2657137A (en) * 1947-07-14 1953-10-27 Grinten Chem L V D Developer for the positive diazotype-process containing a borate, a polyhydroxy alcohol, and a coupler component
US2661292A (en) * 1947-02-19 1953-12-01 Polaroid Corp Product for dispensing a liquidcoated sheet
US2665619A (en) * 1949-09-09 1954-01-12 Kenyon Instr Company Inc Apparatus for processing photographic film
US2698238A (en) * 1947-02-08 1954-12-28 Polaroid Corp Photographic product and process
US2698245A (en) * 1946-04-13 1954-12-28 Polaroid Corp Photographic product and process for making a positive transfer image
US2735346A (en) * 1956-02-21 frantz
US2773768A (en) * 1951-03-20 1956-12-11 Grinten Chem L V D Light-sensitive diazotype material
US2922352A (en) * 1952-03-12 1960-01-26 Specialties Inc Rapid processing of photographic film
US2923625A (en) * 1956-09-11 1960-02-02 Gen Aniline & Film Corp Method of producing diazotype prints
US3144817A (en) * 1960-08-08 1964-08-18 Aizawa Tatsuo Sensitive paper developing device
DE1522449A1 (de) * 1965-03-18 1970-07-30 Addressograph Multigraph Verfahren zum Entwickeln von Zweikomponenten-Diazotypiematerialien und hierfuer geeignete Entwickler
US3607271A (en) * 1968-01-12 1971-09-21 Oce Van Der Grinten Nv Phloroglucinol developer for lingt-sensitive planographic plates
DE2325579A1 (de) * 1972-05-26 1973-12-13 Oce Van Der Grinten Nv Verfahren und vorrichtung zur herstellung von diazotypiekopien
US4579804A (en) * 1980-12-23 1986-04-01 Dai Nippon Insatsu Kabushiki Kaisha Method and material for image formation

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE543185A (fr) * 1954-11-30
GB849739A (en) * 1957-06-13 1960-09-28 Ozalid Co Ltd Improvements in or relating to light-sensitive diazotype materials
US3230089A (en) * 1962-02-21 1966-01-18 Bell & Howell Co Rapid photographic developing

Cited By (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2735346A (en) * 1956-02-21 frantz
US2590899A (en) * 1945-12-29 1952-04-01 Walter O Snelling Apparatus for the dry development of diazotype photographic paper
US2698245A (en) * 1946-04-13 1954-12-28 Polaroid Corp Photographic product and process for making a positive transfer image
US2524818A (en) * 1946-06-25 1950-10-10 Joseph W Mchugh Light-sensitive print development apparatus
US2653872A (en) * 1947-01-28 1953-09-29 Polaroid Corp Photographic product comprising a rupturable container carrying a liquid for processing said product
US2563342A (en) * 1947-01-28 1951-08-07 Polaroid Corp Photographic product and process
US2584030A (en) * 1947-02-07 1952-01-29 Polaroid Corp Light sensitive silver halide photographic product for image transfer and process utilizing the same
US2644756A (en) * 1947-02-08 1953-07-07 Polaroid Corp Photographic process for forming a positive transfer image
US2698238A (en) * 1947-02-08 1954-12-28 Polaroid Corp Photographic product and process
US2661292A (en) * 1947-02-19 1953-12-01 Polaroid Corp Product for dispensing a liquidcoated sheet
US2565376A (en) * 1947-02-19 1951-08-21 Polaroid Corp Photographic positive-producing light sensitive element and process
US2653527A (en) * 1947-02-19 1953-09-29 Polaroid Corp Process for treating photosensitive materials by spreading thereon a layer of processing liquid and apparatus for performing said process
US2647049A (en) * 1947-02-25 1953-07-28 Polaroid Corp Photographic element for color photography and a process of producing multicolor pictures
US2657137A (en) * 1947-07-14 1953-10-27 Grinten Chem L V D Developer for the positive diazotype-process containing a borate, a polyhydroxy alcohol, and a coupler component
US2623821A (en) * 1948-07-14 1952-12-30 Calico Printers Ass Ltd Photographic development of color on textile and other materials
US2665619A (en) * 1949-09-09 1954-01-12 Kenyon Instr Company Inc Apparatus for processing photographic film
US2652759A (en) * 1949-11-25 1953-09-22 Polaroid Corp Apparatus and process for treating light-sensitive materials with liquid
US2773768A (en) * 1951-03-20 1956-12-11 Grinten Chem L V D Light-sensitive diazotype material
US2922352A (en) * 1952-03-12 1960-01-26 Specialties Inc Rapid processing of photographic film
US2923625A (en) * 1956-09-11 1960-02-02 Gen Aniline & Film Corp Method of producing diazotype prints
US3144817A (en) * 1960-08-08 1964-08-18 Aizawa Tatsuo Sensitive paper developing device
DE1522449A1 (de) * 1965-03-18 1970-07-30 Addressograph Multigraph Verfahren zum Entwickeln von Zweikomponenten-Diazotypiematerialien und hierfuer geeignete Entwickler
US3607271A (en) * 1968-01-12 1971-09-21 Oce Van Der Grinten Nv Phloroglucinol developer for lingt-sensitive planographic plates
DE2325579A1 (de) * 1972-05-26 1973-12-13 Oce Van Der Grinten Nv Verfahren und vorrichtung zur herstellung von diazotypiekopien
US4579804A (en) * 1980-12-23 1986-04-01 Dai Nippon Insatsu Kabushiki Kaisha Method and material for image formation

Also Published As

Publication number Publication date
DE589875C (de) 1933-12-16
BE353508A (fr)
NL27513C (fr)
FR658977A (fr) 1929-06-22
GB295993A (en) 1929-11-11

Similar Documents

Publication Publication Date Title
US1841653A (en) Process for developing positive diazo prints
US2596756A (en) Photomechanical copy method
GB746686A (en) Photographic colour reproduction process
US2614927A (en) Rapid processing of photographic materials
DE1915273A1 (de) Registrierung und Wiedergabe von graphischer Information
US2308058A (en) Developer for diazo prints
US2000353A (en) Process of treating photographic layers in a bath containing a wetting agent and new preparations intended for acting on photographic layers
EP0035207A1 (fr) Procédé pour enregistrer des couches limites de courants dans des liquides
US1939231A (en) Photographic reversal process
US3348946A (en) Non-aqueous sil ver halide photographic emulsion processing
US1762033A (en) Process of preparing pictures to be produced by tanning action
US2036994A (en) Photographic film and method of treating same
US3582347A (en) Processing multilayer photographic color films
US2141103A (en) Manufacture and development of light-sensitive coated paper
US4053314A (en) Amine developer liquid for diazotype reproduction
US1956122A (en) Method of producing multicolor photographic reproductions and cinematograph films
US3043687A (en) Photographic colloid transfer process
US2050588A (en) Manufacture of anti-halation or filter layers
GB178828A (en) Photographic print-out paper and prints made therefrom
US1752174A (en) Photographic chemical process and material
EP0035206B1 (fr) Procédé de visualisation de répartitions d'humidité résiduelle dans des couches affluantes de pellicules humides photographiques
US2359040A (en) Copying process
US1966404A (en) Roll of direct positive paper
US1482615A (en) Process of photographic reproduction directly from a negative
US1968956A (en) Colored photographic image and method of producing same