US1861330A - Manufacture of sensitive diazo-type layers - Google Patents

Manufacture of sensitive diazo-type layers Download PDF

Info

Publication number
US1861330A
US1861330A US451837A US45183730A US1861330A US 1861330 A US1861330 A US 1861330A US 451837 A US451837 A US 451837A US 45183730 A US45183730 A US 45183730A US 1861330 A US1861330 A US 1861330A
Authority
US
United States
Prior art keywords
base
diazo
coupling
moisture content
paper
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
US451837A
Other languages
English (en)
Inventor
Lodewijk Pieter Frans Grinten
Karel Jan Joseph Van D 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.)
Chemische Fabriek L Van der Grinten NV
Original Assignee
Grinten Chem L V D
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 Grinten Chem L V D filed Critical Grinten Chem L V D
Application granted granted Critical
Publication of US1861330A publication Critical patent/US1861330A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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
    • G03C1/00—Photosensitive materials
    • G03C1/52—Compositions containing diazo compounds as photosensitive substances
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S430/00—Radiation imagery chemistry: process, composition, or product thereof
    • Y10S430/136—Coating process making radiation sensitive element

Definitions

  • diazo compoun in which case the developer contains alkali plus azo-component
  • it may contain both com ponents in which case the developer contains alkali but no azo-component
  • Each method gas or liquid has its advantages and dis.- dvantages.
  • the developer shall have a simple composition. This might be obtained by incorporating the azo-component in the sensitive layer so that it can be omitted from the developer.
  • the mixture of diazo compound and azo-component, forming the sensitive layer must be a slowly reacting mixture, as otherwise coupling during storage before use cannot be prevented.
  • coupling is prevented chiefly by using slow- 5o coupling (slightly active) diazo compounds,
  • the moisture content, with which the above mentioned quick-coupling combinations may be used in light-sensitivelayers containing both components, while maintaining a practically suflicient stability against coupling, is under 3-470.
  • a moisture content of 12% can be reached, and a paper of very good stability is thus obtained.
  • these layers which consequently contain both substances of an actively coupling combination of diazoand amcomponents is, as explained above, due to the low moisture content.
  • a characteristic feature of these layers is that even after one or several days, they show a detrimental deterioration (by premature coupling) if the moisin the form of water of crystallization, such as wholly or partly dehydrated aluminium sulphate or alum .or other salts, also substances acting on the 'azo-component, such as hvdroxylamine, semicarbazide and the like.
  • salts to the sensitive layers may further increase the sharpness of the pictures.
  • Salts forming sparingly soluble compounds with the diazo compound, such as sodium chlorostannate, cadmium and zinc salts increase the sharpness of the picture, as they better localize the diazo compound.
  • they have also a somewhat beneficial effect on the durability. as they influence favourably the localization and separation of the components, obtained by drying,
  • Example 1 l a Paper containing an excess of alum is pretreated with a solution of 3% sodium chlorostannate, thereafter covered with a solution containing: 1% l-dibenzylamido benzene-4- diazonium chloride (prepared by diazotizing para dibenzylamido-aniline), 2% thiocarbamide, 1.2% hvdroxylamine sulphate, 5% glucose, 2% oxalic acid. 1% gelatine, 5% ammonium chloride, 0.2%phloroglucinol and 0.2% resorcinol.
  • a strong positive image on a white ground is obtained which ground does'not become yellow. It is also possible to use ordinary paper and to omit the pretreatment. The paper is then somewhat less stable and the prints become a little more yellow. Also the thiocarbamide and glucose mav be left out of the layer. and the thiosulnhate and citrate may be left out of thedeveloper, resulting.
  • the paper is intensively dried until the moisture content has fallen below 2%.
  • diazo compound in the diazo compound is a dia'zochlorostanna'te.
  • the process for preparing a base having a light sensitive diazo type layer thereon which comprises applying a buffering agent and a rapidly coupling mixture of a diazo compound and an azo dyestuif component to'said base, and drying the base until the moisture content thereof is reduced to a point not exceeding 4% of its dry weight.
  • diazo compound is a diazochlorostannate.
  • the process for preparing a base having a light sensitive diazo type layer thereon which comprises applying a rapidly coupling mixture comprising a diazo compound, an azo dyestufi component,- and a reduc ng agent capable of arresting the discoloratlon of the background of the finished print, and drying the base until the moisture content thereof is reduced to a point not exceeding 4% of its dry weight.
  • the process for preparing a base having a light sensitive diazo type layer thereon which comprises applying a rapidly coupling mixture comprising a diazo compound, an azo dyestufi component, and a salt capable of forming with said diazo compound a difli cultly soluble salt, and drying the base until the moisture content thereof is reduced to a point not exceeding 4% of its dry weight.
  • a base having thereon a sensitive layer comprising a rapidly couplin mixture of a diazo compound and an azo dyestuif component, said base having the moisture content reduced to a point not exceeding 4% of its dry weight.
  • a base having thereon a sensitive layer comprising a rapidly coupling mixture of a diazo compound and an azo dyestufi component, said base having its moisture content reduced to less than 8% of its dry weight.
  • a base having a sonsitlve layer comprising a bufli'ermg agent and a rapldly coupling mixture of a dlazo compound and an azo dyestufl' component thereon, said base having the moisture content reduced to a point not exceeding 4% of its dry weight.
  • a base having a sensitive layer comprising a rapidly coupling mixture of a diazo compound and an azo dyestufi component and a substance capable of moisture content thereof is reduced to 1,ae1,aso
  • T e product according to claim 18 wherein the substance is an acidic substance.
  • the substance is hydroxylamine.
  • a base having thereon a sensitive layer comprising a rapidly couplin mixture of a diazo compound and an azo dyestufi component and a salt capable of formin with said diazo compound a diflicultly solu le salt, said base having the moisture content reduced to a point not exceeding 4% of its dr weight.
  • a process for preparing a base having a light sensitive dlazotype layer thereon which comprises impregnating the base with a buffering agent and applying a rapidly coupling mixture of a diazo compound and an azo dyestufi component to the surface of said base, and drying the base until the moisture content thereof is reduced to a point not exceeding 4% of its dry weight.
  • a process for preparing a base having a light sensitive diazotype layer thereon which comprisesimpre nating the base with an acidic substance and-applying a rapidly coupling mixture of a diazo compound and an azo dyestuif component to the surface of said base, and drying the base until the not exceeding 4% of its dry weight.
  • a process for preparing a base having a light sensitive diazotype lay'er. thereon which comprises impregnating the base with a salt capable of arresting bleeding of the print upon contact with the developmentliquid, and applying a rapidly coupling mixture of a diazo compound and an azo dyestufi' component to the surface of said base, and drying the base until the moisture content thereof is reduced to a point not exceeding 4% of its dry weight.
  • a process for preparing a base having a light sensitive diazotype layer thereon which comprises impregnating the base with a salt capable of forming upon reaction with a diazo compound a diflicultly soluble compound, and applying a rapidly coupling mix a point

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Non-Silver Salt Photosensitive Materials And Non-Silver Salt Photography (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Heat Sensitive Colour Forming Recording (AREA)
US451837A 1929-05-15 1930-05-12 Manufacture of sensitive diazo-type layers Expired - Lifetime US1861330A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL344721X 1929-05-15

Publications (1)

Publication Number Publication Date
US1861330A true US1861330A (en) 1932-05-31

Family

ID=19784845

Family Applications (1)

Application Number Title Priority Date Filing Date
US451837A Expired - Lifetime US1861330A (en) 1929-05-15 1930-05-12 Manufacture of sensitive diazo-type layers

Country Status (4)

Country Link
US (1) US1861330A (de)
DE (1) DE559596C (de)
FR (1) FR696478A (de)
GB (1) GB344721A (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3046128A (en) * 1958-07-03 1962-07-24 Dietzgen Co Eugene Thermally developable diazotype photoprinting material and production thereof

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3046128A (en) * 1958-07-03 1962-07-24 Dietzgen Co Eugene Thermally developable diazotype photoprinting material and production thereof

Also Published As

Publication number Publication date
FR696478A (fr) 1930-12-31
GB344721A (en) 1931-03-12
DE559596C (de) 1932-09-21

Similar Documents

Publication Publication Date Title
US3166422A (en) Diazotype heat development photographic paper comprising a sugar brightening agent
US3353984A (en) Method for the preparation of lightsensitive diazotype materials and improved materials prepared by such method
US2747999A (en) Photographic reproduction process
US2653091A (en) Photographic diazotype composition and heat development thereof
US2209087A (en) Production of photographic diazotype prints
US2854338A (en) Negative working diazo sulfonate foils
US2566709A (en) Diazotype photoprinting materials containing colloidal silica
NO117609B (de)
US3113025A (en) Diazotype materials for the production of black images
US2239704A (en) Light-sensitive layer and method of making the same
GB687751A (en) Process and material for the direct production of positive photographic images
US2186717A (en) Production of colored photographic pictures
US2531485A (en) Diazotypes comprising amine salts of sulfonic acid containing azo components
US1753059A (en) Production of photographic images
US3203797A (en) Thermal diazotype method and developer sheet for use therein
GB705565A (en) Light sensitive diazo type layers
US1837679A (en) Process for the development of diazo-types
US2720467A (en) Process for preparing photographic elements
US1751318A (en) Process for obtaining photographic images
US1857920A (en) Light sensitive papers and other bases and light sensitive layers therefore
DE815301C (de) Verfahren zur Herstellung von Kopien auf Diazotypiematerial
US2311016A (en) Photographic material and method of producing same
US2141103A (en) Manufacture and development of light-sensitive coated paper
US3203798A (en) Diazotype transfer developing method
US1770352A (en) Manufacture of diazotype sensitive papers and the like