US3415176A - Photographic processing apparatus - Google Patents

Photographic processing apparatus Download PDF

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Publication number
US3415176A
US3415176A US599219A US59921966A US3415176A US 3415176 A US3415176 A US 3415176A US 599219 A US599219 A US 599219A US 59921966 A US59921966 A US 59921966A US 3415176 A US3415176 A US 3415176A
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US
United States
Prior art keywords
teeth
photographic
roller
sheet
solution
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
US599219A
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English (en)
Inventor
William J Calder
Leonard F Jarvis
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.)
Ilford Imaging UK Ltd
Original Assignee
Ilford Ltd
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
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Publication of US3415176A publication Critical patent/US3415176A/en
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    • 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
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M7/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made of other substances with subsequent freeing of the treated goods from the treating medium, e.g. swelling, e.g. polyolefins
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M2200/00—Functionality of the treatment composition and/or properties imparted to the textile material
    • D06M2200/40—Reduced friction resistance, lubricant properties; Sizing compositions

Definitions

  • ABSTRACT OF THE DISCLOSURE A photographic processing apparatus in which the processing solutions are applied to exposed material by applicator rollers.
  • the material is guided on to the applicator rollers by a material guiding system having two sets of guide teeth provided in advance of each roller.
  • the guide teeth serve to guide the leading and trailing edges of the material on to the applicator rollers.
  • This invention relates to photographic processing apparatus and in particular to apparatus for processing exposed galatino-silver-halide photographic sheet material for use in oflices or the like.
  • the material When exposed silver halide photographic material is processed it is usually immersed in a developing solution to develop the latent image and then in a fixing bath to remove the unexposed silver halide. If the developing agent is included in the emulsion the material can then be processed by merely wetting the emulsion with an activator solution, which is usually an alkaline solution of high pH, and then passing the material into a stabilizer solution which does not remove the unexposed silver halide but converts it to a relatively light-insensitive complex.
  • an activator solution which is usually an alkaline solution of high pH
  • the photographic sheet material is conveyed through the apparatus by what is called tendency drive, that is to say, the rotating applicator rollers, as well as applying processing solution to the emulsion surface of the photographic sheet material also tend to drive the photographic material through the apparatus.
  • tendency drive that is to say, the rotating applicator rollers
  • processing solution to the emulsion surface of the photographic sheet material also tend to drive the photographic material through the apparatus.
  • the driving force or traction applied by the applicator rollers to the photographic material varies considerably with each apparatus and also depends to a great extent on the physical characteristics of the photographic material being processed.
  • the processing solution is activator solution
  • this streak will discolour the sheet of photographic material and possibly even cause buckling of the material along the streak mark, which will disturb the front surface of the material. This is due to the fact that the high pH of the activator solution thus applied to the back of the photographic material will not be neutralised by application of stabilizer solution.
  • a photographic sheet material processing apparatus of the type which comprises, arranged after a material entry port, at least one set of two or more applicator rollers adapted to be rotatably driven and mounted with their axes disposed horizontally and parallel to each other with the lower surface of each roller dipping into a bath of processing solution there being a material guiding system associated with each roller which is adapted to guide the material on to the roller, at least one material guiding system which comprises two downwardly projecting guiding means both of which are located above the centre line of the applicator roller on the material entry port side of the applicator, one guiding means being located nearer the material entry port and projecting further downwards than the other guiding means by an amount sufiicient to ensure that it serves to guide the leading edge and body of the material on to the roller and the other guiding means contacts only the trailing edge of the material and serves to guide this edge on to the roller.
  • body of the material is meant the material between the leading and trailing edges.
  • each applicator roller in the apparatus has associated with it a material guiding system of the type hereinbefore described.
  • a photographic processing apparatus for processing exposed sheets of photographic material which comprises, arranged after an entry port, at least one set of two or more rollers adapted to be rotatably driven and mounted with their axes disposed horizontally and parallel to each other with the lower surface of each roller dipping into a bath of processing solution, the exposed photographic material being kept in position on the upper part of each roller by a material guiding system which comprises two sets of downward projecting teeth located above and on the entry port side of the roller, the teeth on one such set being located nearer the material entry port and projecting further downwards than the other by an amount sufficient to ensure that they serve to guide the leading edge and body of the material on to the roller and the teeth of the other set contact only the trailing edge of the material and serve to guide this edge on to the roller.
  • teeth are carried on blocks or on rails.
  • the material guiding system associated with at least one applicator roller comprises two downwardly projecting transverse rails.
  • photographic material includes photographic sheet material in web form on reels.
  • FIGURE 1 illustrates a cross-sectional front elevation of a processing apparatus showing the position of the teeth between the rollers.
  • FIGURE 2 shows an enlarged view of the teeth.
  • FIGURE 3 shows a perspective view of a support which fits over the applicator rollers showing the two sets of teeth which project from the support.
  • FIGURE 4 shows another embodiment of the invention in which the teeth are carried on rails which extend across the applicator rollers.
  • FIGU R-ES 5 and 6 show an enlarged view of the teeth as they are carried on the rails.
  • FIGURE 7 shows a plan view of the apparatus of BIG- URE 4.
  • FIGURES 810 show alternative embodiments of the material guiding system in perspective.
  • the processing apparatus comprises two sets of two rollers 1, 2 and 3, 4 in two baths 5 and 6 each of which contain processing solution.
  • the solution in bath 5 is activator solution and the solution in bath 6 is stabiliser solution.
  • FIGURE 2 there is shown an enlarged view of the rollers 1 and 2. Above them, attached to the support 9 there is one of the set of teeth 7, and one of the set of teeth 8. Also shown in this figure is a sheet of photographic material 10 being processed. Between the sheet of photographic material 10 and the roller 2 there is present a head of activator solution 12.
  • FIGURE 3 there is shown a perspective view of the support 9 which carries the two sets of teeth 7 and 8.
  • the apparatus again comprises two sets of two rollers 20, 21 and 22, 23 which are immersed in two processing solution baths 24 and 25.
  • Bath 24 contains activator solution and bath 25 contains stabiliser solution.
  • the teeth 26 project further downwards than the set of teeth 27 by an amount sufiicient to ensure that it serves to guide the leading edge and body of the material onto the roller and the teeth 27 contact only the trailing edge of the material and serve to guide this edge on to the roller.
  • the rails are so arrayed over the rollers that the teeth 26 are in advance of the teeth 27
  • FIGURE 5 is shown a rail 30 on which teeth 26 are carried.
  • FIGURE 6 there is shown a rail 31 on which teeth 27 are carried.
  • FIGURE 7 there is shown a plan view of an apparatus of this type showing how the rails 39 and 31 are arrayed over applicator rollers 20, 21, 22 and 23.
  • FIGURES 81() show alternative forms of transverse rail guiding means.
  • the transverse rail .34 is nearer the entry port of the apparatus and projects further downwards than the rail 35 by an amount suflicient to ensure that it serves to guide the leading edge and body of the material on to the roller and the rail 35 contacts only the trailing edge of the material and serves to guide this edge on to the roller.
  • the direction of travel of the photographic material is indicated by the arrow.
  • a photographic sheet material processing apparatus of the type which comprises, arranged after a material entry port, at least one set of at least two applicator rollers adapted to be rotatably driven and mounted with their axes disposed horizontally and parallel to each other with the lower surface of each roller dipping into a bath of processing solution there being a material guiding system associated with each roller which is adapted to guide the material on to the roller, the improvement which comprises at least one material guiding system which comprises two downwardly projecting guiding means both of which are located above the centre line of the applicator roller on the material entry port side of the applicator, one guiding means being located nearer the material entry port and projecting further downwards than the other guiding means by an amount sufficient to ensure that it serves to guide the leading edge and body of the material on to the roller and the other guiding means contacts only the trailing edge of the material and serves to guide this edge on to the roller.
  • each roller in the apparatus has associated with it a material guiding system.
  • a processing apparatus according to claim 1 wherein the material guiding system defined therein comprises two sets of teeth.
  • a processing apparatus according to claim 3 wherein the teeth are carried on a block.
  • a processing apparatus according to claim 1 wherein the material guiding system defined therein comprises two downwardly projecting transverse rails.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Photographic Processing Devices Using Wet Methods (AREA)
US599219A 1965-12-09 1966-12-05 Photographic processing apparatus Expired - Lifetime US3415176A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB52390/65A GB1131249A (en) 1965-12-09 1965-12-09 Photographic processing apparatus

Publications (1)

Publication Number Publication Date
US3415176A true US3415176A (en) 1968-12-10

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ID=10463743

Family Applications (1)

Application Number Title Priority Date Filing Date
US599219A Expired - Lifetime US3415176A (en) 1965-12-09 1966-12-05 Photographic processing apparatus

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US (1) US3415176A (enrdf_load_html_response)
BE (1) BE690986A (enrdf_load_html_response)
CH (1) CH455516A (enrdf_load_html_response)
FR (1) FR1509222A (enrdf_load_html_response)
GB (1) GB1131249A (enrdf_load_html_response)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4673273A (en) * 1985-07-12 1987-06-16 Dainippon Screen Mfg. Co., Ltd. Processing apparatus for photosensitive material
US20050249494A1 (en) * 2002-06-19 2005-11-10 Earle Anthony X Photographic processor

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2362587A (en) * 1941-08-29 1944-11-14 Pako Corp Print developing machine
US3336853A (en) * 1964-11-04 1967-08-22 Visual Graphics Corp Apparatus for treating sheet-form materials

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2362587A (en) * 1941-08-29 1944-11-14 Pako Corp Print developing machine
US3336853A (en) * 1964-11-04 1967-08-22 Visual Graphics Corp Apparatus for treating sheet-form materials

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4673273A (en) * 1985-07-12 1987-06-16 Dainippon Screen Mfg. Co., Ltd. Processing apparatus for photosensitive material
US20050249494A1 (en) * 2002-06-19 2005-11-10 Earle Anthony X Photographic processor

Also Published As

Publication number Publication date
CH455516A (de) 1968-07-15
BE690986A (enrdf_load_html_response) 1967-05-16
GB1131249A (en) 1968-10-23
DE1522878A1 (de) 1969-10-16
DE1522878B2 (de) 1975-10-09
FR1509222A (fr) 1968-01-12

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