US3160505A - Process for obtaining a photographic image with improved image-tone according to thesilver halide diffusion transfer process - Google Patents

Process for obtaining a photographic image with improved image-tone according to thesilver halide diffusion transfer process Download PDF

Info

Publication number
US3160505A
US3160505A US150173A US15017361A US3160505A US 3160505 A US3160505 A US 3160505A US 150173 A US150173 A US 150173A US 15017361 A US15017361 A US 15017361A US 3160505 A US3160505 A US 3160505A
Authority
US
United States
Prior art keywords
image
silver halide
imidazolidine
receiving layer
emulsion layer
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
US150173A
Other languages
English (en)
Inventor
Willems Jozef Frans
Sevens Gerard Michiel
Haes Louis Maria De
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.)
Gevaert Photo Producten NV
Original Assignee
Gevaert Photo Producten NV
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 Gevaert Photo Producten NV filed Critical Gevaert Photo Producten NV
Application granted granted Critical
Publication of US3160505A publication Critical patent/US3160505A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D235/00—Heterocyclic compounds containing 1,3-diazole or hydrogenated 1,3-diazole rings, condensed with other rings
    • C07D235/02—Heterocyclic compounds containing 1,3-diazole or hydrogenated 1,3-diazole rings, condensed with other rings condensed with carbocyclic rings or ring systems
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D233/00—Heterocyclic compounds containing 1,3-diazole or hydrogenated 1,3-diazole rings, not condensed with other rings
    • C07D233/04—Heterocyclic compounds containing 1,3-diazole or hydrogenated 1,3-diazole rings, not condensed with other rings having one double bond between ring members or between a ring member and a non-ring member
    • C07D233/28—Heterocyclic compounds containing 1,3-diazole or hydrogenated 1,3-diazole rings, not condensed with other rings having one double bond between ring members or between a ring member and a non-ring member with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals, directly attached to ring carbon atoms
    • C07D233/30—Oxygen or sulfur atoms
    • C07D233/42—Sulfur atoms
    • 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
    • G03C8/00—Diffusion transfer processes or agents therefor; Photosensitive materials for such processes
    • G03C8/24—Photosensitive materials characterised by the image-receiving section
    • G03C8/243—Toners for the silver image
    • 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
    • Y10S430/166—Toner containing

Definitions

  • a light-sensitive silver halide emulsion layer is exposed to an image 1 and then developed into contactwith specially pretreated receiving material in the presence of a silver halide solvent.
  • the exposed areas of the image are developed and
  • the undeveloped silver halide present in the unexposed areas is dissolved by the silver halide solvent which is present either inthe developer or in the receiving layer, transferred by diifusion into the receiving layer of the said receiving material and converted therein to metallic silver.
  • metal sulfides such as zinc sulfide can also develop the transferred silver complex in the receiving layer into a silver sulfide image.
  • a disadvantage of the silver complex diffusion transfer process is the less agreeable brown image-tone of the obtained silver image in the finished image-receiving material.
  • each of R R R R represents a hydrogen atom, an alkyl radical, a substituted alkyl radical, an aryl radical or a substituted aryl radical,e.g., an alkaryl radical, or wherein R and R and also R and R two by two represent the atoms necessary for closing a saturated homocyclic ring or a substituted homocyclic ring.
  • the black-toningagent according to this invention to the present invention, are.
  • the concentration of imidazolidine-4-thione derivative is preferably chosen between 0.05 g. and 5 g. per liter of developing solution. If the black-toning agent is added to the silver halide emulsion layer, the concentration is preferably chosen between 0.02 g. and 1- gram per kg. of flowable emulsion.
  • the image-receiving layer is coated onto a support preferably a paper support. On the image-receiving layer a surface layer may be present as described in our BelgianPatent Numbers 609,394 and 609,395.
  • the image receiving layer makes part of a bi-pack material.
  • Onto the receiving layer a silver halide emul-,
  • sion layervis coated In the latter case the image receiving layer is hardened and the silver halide, emulsion layer is either unhardened or little hardened.
  • the exposed and developed silver halide emulsion layer is removed, e.g., by washing with warm Water.
  • the developing substance used for developing the lightsensitive material may be present either in the silver halide emulsion layer, in the alkaline developing solution, or in both. Mixtures of developing substances may also be considered.
  • the complexing agent forming. a soluble complex with silver halide, preferably consists of sodium thiosulfate and may be added to the image-receiving layer as well as to the bath. 7 v
  • This fog inhibiting compound may be added either to the silver halide emulsion or to the bath.
  • the imidazolidine-4-thiones are also suited for this purpose.
  • Example 1 A solution of 250 mg. of 2,2,5,5-tetramethyl imidazolidine- 4-thione in orm' of ethanol is added to 1 kg of gelatino silver chloro. iodide emulsion ready for coating and containing 0.5% by weight of iodide.
  • iodide emulsion ready for coating and containing 0.5% by weight of iodide.
  • the developing bath comprises hydroquinone, l-phenyl-i-pyrazolidone and sodium thiosulfate.
  • both layers are squeezed into contact witheach other and after a 10 to 20 seconds separated again.
  • an image of the original is obtained with a markedly black image tone.v
  • Example 2 400 cm? of a 1% alcoholic solution of 2,2,5-trimeth'yl imidazolidine-4-thione are added to 1 kg. of a gelatino Example 3
  • a paper support is coated with an image-receiving layer from a' suspension of the following composition:
  • a silver halide emulsion paper as used in Example 1, containing, however, no 2,2,5,5-tetramethylimidazolidine-4-thione, after exposure in contact with an original to be reproduced is developed in a solution of thefollowing composition:
  • the image-tone obtained in thisimage-receiving layer shows a more neutral co or.
  • Example 4 is repeated after having substituted, however in the image-receiving layer a same amount of 2,2,5- trimethyl imidazolidinei-thione for the 2,2,5,5-tetramethyl imidaz0lidine-4-thione.
  • the image-tone obtained in this receiving layer shows a more neutral color.
  • Example 5 an image of the original is obtained which shows a more neutral black image-tone.
  • Example 6 Example 5 is repeated, substituting, however, 1 g. of 2,2,5-tr-imethyl imidazolidine-4-thione for the same amount of 2,2,5,5,-tetramethyl imidazolidine-4-tbione.
  • an image of the original is formed which shows a more neutral image-tone.
  • a process for preparing a photographic image which comprises exposing a photographic silver halide emulsion layer to a subject, developing the emulsion layer, then transferring the silver halide by diffusion from the undeveloped areas of the emulsion layer to an image-receiving layer, the transfer being effected in contiguity with a silver halide solvent and at least one imidazolidinel-thione compound having the following tautomeric formula:
  • each of R R R and R is a member selected from the group consisting of a hydrogen atom, and alkyl radical, and an aryl radical.
  • a process for preparing a photographic image which comprises exposing a photographic silver halide emulsion layer to a subject, developing the emulsion layer, then transferring the silver halide by diffusion from the undeveloped areas of the emulsion layer to an image-receiving layer, the transfer being effected in contiguity with a silver halide solvent and at least one imidazolidine-4-thione compound having the following tautomeric formula:
  • a process for preparing a photographic image which comprises exposing a photographic silver halide emulsion layer to a subject, developing the emulsion layer, then transferring the silver halide by diffusion from the undeveloped areas of the emulsion layer to an image-receiving layer, the transfer being effected in contiguity with a 5 silver halide solvent and at least one imidaZolidinel-thione compound having the following tautomeric formula:

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Photosensitive Polymer And Photoresist Processing (AREA)
US150173A 1960-11-08 1961-11-06 Process for obtaining a photographic image with improved image-tone according to thesilver halide diffusion transfer process Expired - Lifetime US3160505A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
BE40191 1960-11-08

Publications (1)

Publication Number Publication Date
US3160505A true US3160505A (en) 1964-12-08

Family

ID=3840220

Family Applications (1)

Application Number Title Priority Date Filing Date
US150173A Expired - Lifetime US3160505A (en) 1960-11-08 1961-11-06 Process for obtaining a photographic image with improved image-tone according to thesilver halide diffusion transfer process

Country Status (3)

Country Link
US (1) US3160505A (is")
BE (1) BE596845A (is")
GB (1) GB1000788A (is")

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3360368A (en) * 1961-07-06 1967-12-26 Gevaert Photo Prod Nv Silver complex diffusion transfer process
JPS4854937A (is") * 1971-11-09 1973-08-02
US5043245A (en) * 1989-01-31 1991-08-27 Agfa Gevaert, N.V. Process for the production of a laminated article

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE595695A (is") * 1960-10-04
US2785175A (en) * 1955-12-15 1957-03-12 Monsanto Chemicals Imidazolidinethiones
US2806306A (en) * 1951-04-10 1957-09-17 Peterson William Don Land planing apparatus
US3017270A (en) * 1958-03-31 1962-01-16 Eastman Kodak Co Photographic silver halide diffusion transfer process

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2806306A (en) * 1951-04-10 1957-09-17 Peterson William Don Land planing apparatus
US2785175A (en) * 1955-12-15 1957-03-12 Monsanto Chemicals Imidazolidinethiones
US3017270A (en) * 1958-03-31 1962-01-16 Eastman Kodak Co Photographic silver halide diffusion transfer process
BE595695A (is") * 1960-10-04

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3360368A (en) * 1961-07-06 1967-12-26 Gevaert Photo Prod Nv Silver complex diffusion transfer process
JPS4854937A (is") * 1971-11-09 1973-08-02
US5043245A (en) * 1989-01-31 1991-08-27 Agfa Gevaert, N.V. Process for the production of a laminated article

Also Published As

Publication number Publication date
BE596845A (is")
GB1000788A (en) 1965-08-11

Similar Documents

Publication Publication Date Title
US3300306A (en) Process for the manufacture of printing plates
US2712995A (en) Process for the direct production of positive photographic images
US3020155A (en) Photographic diffusion transfer process
US3635719A (en) Heat developable light-sensitive elements
US3607269A (en) Image-receiving elements and photographic processes employing same
US3168400A (en) Rapid processing of photographic color materials
US3160505A (en) Process for obtaining a photographic image with improved image-tone according to thesilver halide diffusion transfer process
US3431108A (en) Silver complex diffusion transfer process
US4288522A (en) Non-photosensitive receptor material suited for producing black-and-white silver images and dye images and a process for the production of such images therewith
US3108001A (en) Novel photographic products, processes, and compositions
US3740221A (en) Development of photographic material
US3174859A (en) Process for obtaining multiple photographic positive images by diffusiontransfer
US3351469A (en) Photographic image-receiving material
US5478703A (en) Method and material for photographic processing
US3765889A (en) Silver transfer diffusion process
US3053657A (en) Photographic silver halide diffusion transfer process
US3335007A (en) Silver halide diffusion transfer process
US3575703A (en) Photographic diffusion transfer product and process
US3563740A (en) Use of dicyanamides in and with photosensitive systems
US2739890A (en) Photographic reproduction process
US2584029A (en) Photographic silver transfer product and process, including a lead salt
US3549364A (en) Photographic processes and compositions
US3620728A (en) Receiving sheet for diffusion transfer processes
US3068098A (en) Photographic diffusion transfer process
US3360368A (en) Silver complex diffusion transfer process