US3330197A - Developing apparatus for developing exposed films - Google Patents

Developing apparatus for developing exposed films Download PDF

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Publication number
US3330197A
US3330197A US426165A US42616565A US3330197A US 3330197 A US3330197 A US 3330197A US 426165 A US426165 A US 426165A US 42616565 A US42616565 A US 42616565A US 3330197 A US3330197 A US 3330197A
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United States
Prior art keywords
film
rolls
tank
pair
liquid
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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
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US426165A
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English (en)
Inventor
Boeger Marius
Krueger Alfred
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Individual
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Individual
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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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/07—Flat, e.g. panels
    • B29C48/08—Flat, e.g. panels flexible, e.g. films
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
    • B29C48/91—Heating, e.g. for cross linking
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03D—APPARATUS FOR PROCESSING EXPOSED PHOTOGRAPHIC MATERIALS; ACCESSORIES THEREFOR
    • G03D3/00—Liquid processing apparatus involving immersion; Washing apparatus involving immersion
    • G03D3/08—Liquid processing apparatus involving immersion; Washing apparatus involving immersion having progressive mechanical movement of exposed material
    • G03D3/13—Liquid processing apparatus involving immersion; Washing apparatus involving immersion having progressive mechanical movement of exposed material for long films or prints in the shape of strips, e.g. fed by roller assembly
    • G03D3/132—Liquid processing apparatus involving immersion; Washing apparatus involving immersion having progressive mechanical movement of exposed material for long films or prints in the shape of strips, e.g. fed by roller assembly fed by roller assembly

Definitions

  • ABSTRACT OF THE DISCLOSURE A developing apparatus in which adeveloping liquid is applied to the emulsion side of an exposed film by a pair of superimposed rolls the lower one of which dips into a developing liquid, in which the film is subsequently guided by guide means through a fixing liquid and in which a pair of fixing rolls arranged between the firstnentioned pair of rolls and the guide means cooperate with the fixing liquid and the film for applying the fixing liquid to the emulsion side thereof so as to abruptly stop further developing of the film.
  • the present invention relates to a two bath developing apparatus for developing exposed elongated films.
  • Such developing apparatus is known in the art and it usually comprises a developing bath and a fixing bath downstream of the developing bath, at least one pair of superimposed rolls for feeding the elongated exposed film from the developing bath into the fixing bath, and guide elements which guide the film in a curve through the fixing bath to a pair of squeeze rolls at the end or above the fixing bath.
  • the developing apparatus of the present invention mainly comprises a first tank adapted to contain a developing liquid, a second tank arranged adjacent the first tank and adapted to contain a fixing liquid, and means for successively applying the developing liquid and the fixing liquid to the emulsion surface of an exposed photographic film and for feeding the film in one direction.
  • the aforementioned means include according to the present invention at least one pair of superimposed rolls adapted to grip the film between the peripheral surfaces thereof and cooperating with the liquid in the first tank for applying the liquid to the emulsion surface of the film and for transporting the film from the first to the second tank, guide means in the second tank for guiding the film through th e fixing liquid therein, a second pair of superimposed rolls between the first mentioned pair of rolls and the guide means and adapted to grip the film between the peripheral surface thereof, in which the lower one of the second pair of superimposed rolls is arranged to dip into the fixing liquid, and a pair of squeeze rolls downstream of the guide means and arranged above the liquid in the second tank, and means operatively connected to the rolls for driving the same.
  • the second pair of superimposed rolls hereinafter also called fixing rolls
  • the second pair of superimposed rolls will grip the leading end of the film leaving the gap between the pair of rolls cooperating with the developing liquid in the first tank and guide the same toward the guide means, whereby the lower roll of the pair of fixing rolls, which dips into the fixing liquid in the second tank, will moisten the lower or emulsion side of the film with the fixing liquid.
  • This moistening of the emulsion side of the film with the fixing liquid will abruptly interrupt any further developing action. This will assure that all portions of the film will be subjected to the same developing action and undesired after overdeveloping will be positively avoided.
  • the upper one of the pair of fixing rolls in a position displaced towards the center of the second tank relative to the lower one of the pair of fixing rolls.
  • the developing apparatus includes a first tank 1 adapted to contain a developing liquid 1' and forming a developing bath, and a second tank 2 closely adjacent to the first tank and adapted to contain a fixing liquid and forming a fixing bath.
  • the tanks 1 and 2 are preferably of rectangular configuration and are open at their upper ends and they are preferably mounted on a common support plate 22 having an upwardly extending rim portion 2-2 preventing shifting of the tanks mounted thereon relative to the base plate 22.
  • the apparatus includes further means for successively applying the developing liquid 1 in the first tank and the fixing liquid 2 in the second tank to the emulsion side e of an exposed photographic film F and for feeding the film in one direction.
  • These means include at least one, and preferably, as shown in the drawing, two pairs of superimposed rolls 3 and 4 arranged spaced from each other in feeding direction in the region of the first tank, the two pairs of rolls 3 and 4 are respectively adapted to grip between peripheral surfaces thereof the film F and to feed the film during rotation of the rolls in the feeding direction as indicated by the arrow A.
  • Each pair of rolls 3 and 4 has a lower roll dipping in the developing liquid 1 in the first tank 1 so as to apply during rotation thereof developing liquid to the emulsion side e of the film F engaging the peripheral surface of the lower ones of the pairs of rolls 3 and 4.
  • the leading end of the film F After the leading end of the film F leaves the pair of rolls 4, it will enter between the gap of a pair of fixing rolls 5 arranged at the front end of the second tank 2 as closely as possible to the pair of rolls 4.
  • the lower one of the pair of fixing rolls 5 dips into the fixing liquid 2' in the second tank 2 so that the emulsion side e of the film F will be moistened with fixing liquid as soon as the film enters between the pair of fixing rolls 5, which will terminate the after developing of the film occurring while the film passes from the pair of rolls 4 to the fixing rolls 5.
  • the film leaving the pair of fixing rolls 5 is guided between a pair of superimposed curved guide elements 6 and 7, arranged spaced from each other in a direction transverse to the feeding direction downstream of the pair of fixing rolls 5, which guide the film F in a curve through the fixing liquid 2 in the tank 2 and which direct the leading end of the film into the nip of a pair of squeeze rolls 8 arranged downstream of the trailing end of the guide means 6 and 7 above the fixing liquid 2' in the second tank 2.
  • the two guide elements 6 and 7 of the guide means may be constituted by curved perforated plates or by two pairs of elongated curved strips respectively adapted to engage the outer edges of the film.
  • the guide elements 6 and 7 may be attached to the side walls of the second tank in any known manner.
  • the aforementioned rolls are preferably made from elastic material such as rubber or the like and the lower ones of the pair of rolls 3, 4 and 5 are mounted on shafts which in turn may be turnably mounted in appropriate bearings, not shown in the drawing, connected to the side walls of the tanks 1 and 2.
  • the upper ones of the pair of rolls 3, 4 and 5 and the pair of squeeze rolls 8 are likewise mounted on shafts having parallel axes and these shafts are mounted for rotation about their axes in bearings, also not shown in the drawing, which are supported on spaced parallel walls 23, one of which is shown in the drawing, extending upwardly from the base plate 22.
  • the shafts project with an end portion thereof beyond the outer surface of the wall 23 shown in the drawing and the end portions of the shafts respectively carry gears 13, 14,- and 16 fixed to the respective shaft for rotation therewith.
  • a gear 17 is located between the gears 13 and 14 and in meshing relationship therewith.
  • Gear 17 is fixedly mounted on a shaft 29 which in turn is driven by means of a reduction gear means 21 from a motor, not shown in the drawing.
  • An idler gear 18 is located between the gears 14 and 15 in meshing relationship with the latter and this idler gear may be turnably mounted on a stud shaft fixed to the wall 23 and projecting to the outer side thereof.
  • An additional idler gear 19 is located between the gears 15 and 16 and in meshing relationship therewith and the idler gear 19 is likewise turnably mounted on a stud shaft carried by the wall 23.
  • the gears 13, 14, 15 and 16 have the same pitch diameter and the same number of teeth and the gears 17, 18 and 19 also have identical pitch diameters and identical number of teeth so that the driven rolls of the pair of rolls 3, 4, 5 and 8 which all have the same diameter are driven with identical circumferential speeds.
  • a developing apparatus in combination, a first tank adapted to contain a developing liquid; a second tank arranged adjacent said first tank and adapted to contain a fixing liquid; and means for successively applying said developing liquid and said fixing liquid to the emulsion side of an exposed photographic film and for feeding said film in one direction, said means including at least one pair of superimposed rolls adapted to grip the film between the peripheral surfaces thereof and cooperating with the liquid in said first tank for applying said liquid to the emulsion side of said film and for transporting the film from said first to said second tank, guide means in said second tank for guiding the film through the fixing liquid therein, a second pair of superimposed rolls between said first mentioned pair of rolls and said guide means and adapted to grip the film between the peripheral surfaces thereof, said first and said second pair of rolls being arranged close to each other and in such a manner that the film is guided between said pairs of rolls along a short substantially straight path, the lower one of said second pair of superimposed rolls engaging the emulsion side of the film and adapted to dip into the fixing
  • a developing apparatus in combination, a first tank adapted to contain a developing liquid; a second tank arranged adjacent said first tank and adapted to contain a fixing liquid; and means for successively applying said developing liquid and said fixing liquid to the emulsion side of an exposed photographic film and for feeding said film in one direction, said means including at least one pair of superimposed rolls adapted to grip the film between the peripheral surfaces thereof and cooperating with the liquid in said first tank for applying said liquid to the emulsion side of said film and for transporting the film from said first to said second tank, a pair of curved guide means arranged spaced from each other in direction transverse to said feeding direction located in said second tank for guiding the film through the fixing liquid therein, a second pair of superimposed rolls between said first mentioned pair of rolls and said guide means and adapted to grip the film between the peripheral surfaces thereof, said first and said second pair of rolls being arranged close to each other and in such a manner that the film is guided between said pairs of rolls along a short substantially straight path, the lower one of said second pair
  • a developing apparatus in combination, a first tank adapted to contain a developing liquid; a second tank arranged adjacent said first tank and adapted to contain a fixing liquid; and means for successively applying said developing liquid and said fixing liquid to the emulsion side of an exposed photographic film and for feeding said film in one direction, said means including at least one pair of superimposed rolls adapted to grip the film between the peripheral surfaces thereof and cooperating with the liquid in said first tank for applying said liquid to the emulsion side of said film and for transporting the film from said first to said second tank, a pair of curved guide means arranged spaced from each other in direction transverse to said feeding direction located in said second tank for guiding the film through the fixing liquid therein, a second pair of superimposed rolls between said first mentioned pair of rolls and said guide means and adapted to grip the film between the peripheral surfaces thereof, said first and said second pair of rolls being arranged close to each other and in such a manner that the film is guided between said pairs of rolls along a short substantially straight path, the lower one of said second pair of rolls
  • a developing apparatus comprising, in combination, support means; a first substantially rectangular tank having an open top mounted on said support means and adapted to contain a developing liquid; a second substantially rectangular tank having an open top mounted on said support means closely adjacent said first tank and adapted to contain a fixing liquid; and means for successively applying said developing liquid and said fixing liquid to the emulsion side of an exposed photographic film and for feeding said film in one direction, said means including two pairs of superimposed rolls arranged spaced from each other in feeding direction in the region of said first tank, said two pairs of rolls respectively adapted to grip between peripheral surfaces thereof the film and each pair having a lower roll adapted to dip in the developing liquid in said first tank so as to apply during rotation thereof developing liquid to the emulsion side of a film engaging the peripheral surface of the lower ones of said rolls, a pair of superimposed fixing rolls in the region of said second tank adjacent said first tank and adapted to grip the film between the peripheral surfaces thereof,
  • the one pair of rolls in said first tank which follows in feeding direction the other of said two pairs is arranged closely adjacent said pair of fixing rolls and in such a manner that the film is guided between said one pair of rolls and said fixing rolls along a short substantially straight path
  • the lower one of said pair of superimposed fixing rolls adapted to dip into the fixing liquid in said second tank to apply said fixing liquid to the emulsion side of the film as the latter moves from said first to said second tank
  • curved guide means in said second tank downstream of said pair of fixing rolls for guiding the film through the fixing liquid in said second tank
  • a pair of squeeze rolls downstream of said guide means and arranged above the liquid in said second tank and means operatively connected to said rolls for driving the same.
  • a developing apparatus comprising, in combination, support means; a first substantially rectangular tank having an open top mounted on said support means and adapted to contain a developing liquid; a second substantially rectangular tank having an open top mounted on said support means closely adjacent said first tank and adapted to contain a fixing liquid; and means for successively applying said developing liquid and said fixing liquid to the emulsion side of an exposed photographic film and for feeding said film in one direction, said means including two pairs of superimposed rolls arranged spaced from each other in feeding direction in the region of said first tank, said two pairs of rolls respectively adapted to grip between peripheral surfaces thereof the film and each pair having a lower roll adapted to dip in the developing liquid in said first tank so as to apply during rotation thereof developing liquid to the emulsion side of a film engaging the peripheral surface of the lower ones of said rolls, a pair of superimposed fixing rolls in the region of said second tank adjacent said first tank and adapted to grip the film between the peripheral surfaces thereof, the one pair of rolls in said first tank which follows in feeding direction the other of said two pairs is arranged closely adjacent said
  • a developing apparatus comprising, in combination, support means; a first substantially rectangular tank having an open top mounted on said support means and adapted to contain a developing liquid; a second substantially rectangular tank having an open top mounted on said support means closely adjacent said first tank and adapted to contain a fixing liquid; and means for successively applying said developing liquid and said fixing liquid to the emulsion side of an exposed photographic film and for feeding said film in one direction, said means including two pairs of superimposed rolls arranged spaced from each other in feeding direction in the region of said first tank, said two pairs of rolls respectively adapted to grip between peripheral surfaces thereof the film and each pair having a lower roll adapted to dip in the developing liquid in said first tank so as to apply during rotation thereof developing liquid to the emulsion side of a film engaging the peripheral surface of the lower ones of said rolls, a pair of superimposed fixing rolls in the region of said second tank adjacent said first tank and adapted to grip the film between the peripheral surfaces thereof, the one pair of rolls in said first tank which follows in feeding direction the other of said two pairs is arranged closely adjacent said

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • Coating Apparatus (AREA)
  • Photographic Processing Devices Using Wet Methods (AREA)
US426165A 1964-01-18 1965-01-18 Developing apparatus for developing exposed films Expired - Lifetime US3330197A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEJ25148A DE1227776B (de) 1964-01-18 1964-01-18 Zweibad-Entwicklungsgeraet zur Entwicklung belichteter fotografischer Schichttraeger

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US3330197A true US3330197A (en) 1967-07-11

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US426165A Expired - Lifetime US3330197A (en) 1964-01-18 1965-01-18 Developing apparatus for developing exposed films

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US (1) US3330197A (en))
BE (1) BE660698A (en))
DE (1) DE1227776B (en))
FR (1) FR1420286A (en))

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3729255A (en) * 1970-08-11 1973-04-24 Sunbeam Business Equipment Co Photodevelopment apparatus including tray assembly and retaining means therefor
US3735689A (en) * 1971-12-27 1973-05-29 Eastman Kodak Co Roller tray photographic processing apparatus
US5210005A (en) * 1988-08-16 1993-05-11 Fuji Photo Film Co., Ltd. Method and apparatus for developing photosensitive lithographic plate
US5734946A (en) * 1995-11-08 1998-03-31 Agfa Ag Processing device for photographic materials
US6161968A (en) * 1997-10-09 2000-12-19 Eastman Kodak Company Processing photographic material

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1337297A (fr) * 1962-06-27 1963-09-13 Lumiere Soc Perfectionnements aux dispositifs pour le traitement des papiers photographiques, notamment pour photocopies
US3107596A (en) * 1960-04-07 1963-10-22 Peerless Photo Products Inc Photocopy machine
GB943653A (en) * 1959-12-17 1963-12-04 Kodak Ltd Improvements in or relating to a photographic processing apparatus
US3186325A (en) * 1961-08-09 1965-06-01 Gevaert Photo Prod Nv Developing device
US3242843A (en) * 1963-09-20 1966-03-29 Ilford Ltd Photographic processing apparatus

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB943653A (en) * 1959-12-17 1963-12-04 Kodak Ltd Improvements in or relating to a photographic processing apparatus
US3107596A (en) * 1960-04-07 1963-10-22 Peerless Photo Products Inc Photocopy machine
US3186325A (en) * 1961-08-09 1965-06-01 Gevaert Photo Prod Nv Developing device
FR1337297A (fr) * 1962-06-27 1963-09-13 Lumiere Soc Perfectionnements aux dispositifs pour le traitement des papiers photographiques, notamment pour photocopies
US3242843A (en) * 1963-09-20 1966-03-29 Ilford Ltd Photographic processing apparatus

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3729255A (en) * 1970-08-11 1973-04-24 Sunbeam Business Equipment Co Photodevelopment apparatus including tray assembly and retaining means therefor
US3735689A (en) * 1971-12-27 1973-05-29 Eastman Kodak Co Roller tray photographic processing apparatus
US5210005A (en) * 1988-08-16 1993-05-11 Fuji Photo Film Co., Ltd. Method and apparatus for developing photosensitive lithographic plate
US5734946A (en) * 1995-11-08 1998-03-31 Agfa Ag Processing device for photographic materials
US6161968A (en) * 1997-10-09 2000-12-19 Eastman Kodak Company Processing photographic material

Also Published As

Publication number Publication date
FR1420286A (fr) 1965-12-03
BE660698A (en)) 1965-07-01
DE1227776B (de) 1966-10-27

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