US3104603A - Method and apparatus for wetting sheets of photographic foil material - Google Patents

Method and apparatus for wetting sheets of photographic foil material Download PDF

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Publication number
US3104603A
US3104603A US175191A US17519162A US3104603A US 3104603 A US3104603 A US 3104603A US 175191 A US175191 A US 175191A US 17519162 A US17519162 A US 17519162A US 3104603 A US3104603 A US 3104603A
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United States
Prior art keywords
roller
wetting
sheet
treating solution
sheets
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
US175191A
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English (en)
Inventor
Schwienbacher Georg
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.)
PHOTO ENTWICKLUNGSGERATE AG
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PHOTO ENTWICKLUNGSGERATE AG
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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

Definitions

  • the objectof the present invention is to avoid this troublesome and time-consuming mode of operation and to eliminate the uneconomical waste of material.
  • vmethod according to the invention comprises the step of feeding to the surface of the wetting roller a predetermined quantity of treating solution sufiicient for wetting a limited number of sheets only.
  • an apparatus for wetting sheets-of photographic foil material comprises a wetting roller, means for passing a sheet of foil material over the wetting roller, a closing device including a container for treating solution, and means for feeding a predetermined quantity of treating solution to the wetting roller, an open space being provided adjacent the wetting roller for receiving the predetermined quantity of treating liquid and transferring it to the roller surface.
  • FIG. 1 shows in longitudinal section an apparatus according to the invention as used for the production of photostats with a wetting rollereach for the developer and the stabilizer.
  • FIGS. 2 and 3 illustrate modifications of the apparatus of FIG. 1, however, only the essential components being shown.
  • FIG. 4 illustrates details of a further modification.
  • FIG. 5 is a fragmentary perspective view of the modification of FIG, 4.
  • the apparatus comprises a lower housing portion 1 in which a collecting trough land a receptacle 3 for the spent treating solution is enclosed.
  • the trough 2 communicates through a discharge opening 4 with receptacle 3.
  • the upper portion of the'housing is 'not shown in the drawmg. 4
  • Photographic paper 5 to be treated is engaged and moved between a pair of rollers '6 including upper and lower rollers 6' and 6" which are rotated by a motor,
  • Sheet 5 is carried by the pair of rollers 6 to a first wetting roller 7 which is rotated in the same direction as roller 6" and in such a manner that the peripheral speed 'of the roller will be higher than the travelling speed of the sheet to be treated.
  • a first wetting roller 7 which is rotated in the same direction as roller 6" and in such a manner that the peripheral speed 'of the roller will be higher than the travelling speed of the sheet to be treated.
  • a dosing device 8 for treating liquid consisting of a storage container 9 which is hermetically sealed by means of a cover 10 made of resiliently yielding material, and which has a discharge tube 11 ending above the wetting roller 7.
  • a profiled bar 12 of angular crosssection is arranged parallel with the axis of roller 7, so that one of its legs 12' extends horizontally below the roller and is slightly spaced from the latter, whereas the other leg 12" extends vertically after the roller as seen in the direction of sheet feeding indicated by V.
  • the distance of the leg 12 from the roller surface is in the order of about 1 mm. (0.04 inch) and the same spacing is selected for the distance between the top edge of leg 12" and the sheet 5 to be treated. The purpose of this arrangement will be described later.
  • the first wetting roller 7 is followed by another wetting roller 13 which is rotated in the same direction and which has the same peripheral speed as roller 7.
  • a simple flat bar 14 is disposed below the second wetting roller 13, the distance between the bar 7 and the surface of the roller being also in the order of 1 mm.
  • the roller '17 is associated with a dosing device 15 the structure of which is similar to dosing device 8, comprising a container 9 and a cover 10.
  • the discharge pipe 11 also opens above roller 13. Between the rollers 7 and 13 the sheet is slightly bent downwards by a holding down lever 16.
  • roller 13 In the direct-ion of feed V, the roller 13 is followed by a further pair of rollers 17 consisting of a lower roller i7 and an upper roller 17" the latter having a somewhat larger diameter than the lower roller. As compared with the surface of roller 17', roller 17 is lined with a softer material so that roller 17 produces a depression on the circumferential surface of roller 17". The purpose of such an arrangement will also be fully described hereafter.
  • the pair of rollers 17 which is motor driven with a speed corresponding to the travelling speed V, and is preceded by a stripping edge 18 which makes contact with the coated lower surface ofthe sheet 5 to be treated.
  • the container 9 of the dosing device 8 contains developer liquid, while the container 9 of the dosing device 15 contains stabilizer liquid.
  • a drop of treating solution from each of the dosing devices 8 and 15, respectively, is caused to discharge on the surfaces of each roller 7 and 13 by exerting pressure wi-tlra finger upon cover 10 of the dosing de vices, which cover may be made of rubber, for instance.
  • the sheet 5 can now be introduced between therollers 6' and'6"from' where it is automatically carried on by the movement'of the rollers.
  • the coated surface of the sheet facing rollers 7 and 13 will be perfectly wetted by the liquid taken up by the rollers in the gap 19 during r 3 r V their rotation.
  • the liquid in the ⁇ gap 19 will be gradually used up, since the amount of liquid discharged by exertion of pressure on the coverslti' prior to introducing the sheet will scarcely suffice for the treatment of more than one sheet. To make sure that the sheet to he treated is thoroughly wetted, it may be advisable to choose an amount of liquid slightly in excess of the quantity required for one sheet.
  • Leg'12" of the angle bar 12 is necessary to avoid that the end of sheet 5 is carried downward by the rotating roller 7 whose peripheral speed is higher than the advance speed of the sheet, as otherwise the-back side of the sheet would also be wetted.
  • the free edge of member 13 serves to wipe off any excess liquid from the coated side of sheet 5 and to preventthus any excess liquid from being carried over the roller 17. If desired, the stripping edge 18 -may be omitted.
  • each of the wetting rollers is associated. with an open space 19 essentially'designed for receiving a dosed amount oftreating:
  • the dosed amount of liquid is in principle determined by the quantity of treating I solution required for the treatment of one sheet, but it must be understood that for continuous operation twice or three times as much, or even more treating solution can readily be supplied to the gaps 19, since there is no risk of spoiling when the sheets are treated immediately oneafter another.
  • the dosed amount of liquid is in principle determined by the quantity of treating I solution required for the treatment of one sheet, but it must be understood that for continuous operation twice or three times as much, or even more treating solution can readily be supplied to the gaps 19, since there is no risk of spoiling when the sheets are treated immediately oneafter another.
  • FIG. 2 differs from'that shown in *FIG.-1 in so far as the roller 7 .is' preceded by a counterroller ZOengaging the roller 7 and turning at the same peripheral speed, but in opposite direction as indicated by 'the'arrows.
  • the gap 21 between the two rollers 20 and 7 which'is downwardly closed because of the mutual engagement of the two rollers, but which could also be downwardly open by modifying the distance between the two rollers, forms a receptacle which is laterally open at both roller ends in order to receive the dosedjamount of treating solution supplied from the :roller 31 for the developer; a sheet 32 to be treated is fed to the wetting roller by means'of a pair of rollers 33 whose rollers 33' and-33" are rotated by a motor at a desired speed and in the direction of rotation as indicated by the arrows.
  • a strip 34 of resilient material preferably of plastics, is inserted in a ledge 35 disposed below the wetting roller 3 and extending longitudinally thereof; thearrangement is such that the strip 34 rests against the roller 31, notably against the side of roller remote from the pair of rollers 33, whereby the strip is sharply'deilected immediately above the ledge 35.
  • the ledge is slightly bent away from the roller at 36 so that the strip 34 is less sharply deflected at point 36 than adjacent to it.
  • a line of contact '37 is formed between the strip 34 and roller 31 which slopes down towards both ends of the roller.
  • This embodiment V ledge along a bentline so thatsaid strip engages the also satisfies the requirement that only as much treating solution be supplied to the wetting rolleruas will be n'eces quantityof treating solution fromthe'container tothe wetting-roller, a ledge extending longitudinally of and below the wetting roller, and a strip of flexible material inserted insaid :ledge extending. longitudinally of the wetting roller alonga bent'line sloping down from a few sheets and as will be point intermediate the ends of the roller towards both ends thereof providing an open space between the circumferential surface of the roller and the strip for recei-ving the predetermined quantity of treating solution and transferring the same to the roller surface.
  • a method for Wetting sheets of photographic foil 'material with a treating solution comprising the steps of so that the solution in the gap will be transferred by the roller to the sheet and repeating the above steps.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Photographic Processing Devices Using Wet Methods (AREA)
US175191A 1961-02-23 1962-02-23 Method and apparatus for wetting sheets of photographic foil material Expired - Lifetime US3104603A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH215361A CH396631A (de) 1961-02-23 1961-02-23 Einrichtung zum Benetzen von Einzelblättern aus photographischem Folienmaterial

Publications (1)

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US3104603A true US3104603A (en) 1963-09-24

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Application Number Title Priority Date Filing Date
US175191A Expired - Lifetime US3104603A (en) 1961-02-23 1962-02-23 Method and apparatus for wetting sheets of photographic foil material

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US (1) US3104603A (enrdf_load_stackoverflow)
CH (1) CH396631A (enrdf_load_stackoverflow)
NL (1) NL275081A (enrdf_load_stackoverflow)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3262381A (en) * 1963-09-30 1966-07-26 Deluxe Lab Inc Method and apparatus for improving upon the reproduction of images recorded on a photographic film
US3263590A (en) * 1963-07-09 1966-08-02 Robertson Photo Mechanix Inc Processor for photo-direct material
US3299791A (en) * 1963-05-27 1967-01-24 Fuji Photo Film Co Ltd Device for developing copying paper
US3307466A (en) * 1963-05-27 1967-03-07 Fuji Photo Film Co Ltd Device for applying a treating solution to sensitized paper
US3704662A (en) * 1970-04-27 1972-12-05 Addressograph Multigraph Liquid developing apparatus
US3769896A (en) * 1971-08-16 1973-11-06 Speed O Print Business Machine Squeegee assembly for photo-copy machines
US3874328A (en) * 1972-05-23 1975-04-01 Ricoh Kk Developing device for electrophotography
US3943541A (en) * 1972-10-21 1976-03-09 Ricoh Co., Ltd. Liquid developing apparatus for electrophotography
US4294533A (en) * 1978-03-23 1981-10-13 E. I. Du Pont De Nemours And Company Apparatus for pre-conditioning film
US5839011A (en) * 1996-08-14 1998-11-17 Mitsubishi Paper Mills Ltd. Apparatus for processing photosensitive material

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US826897A (en) * 1906-07-24 Richard W Shely Machine for applying fluids to surfaces.
US1811689A (en) * 1927-08-30 1931-06-23 Spicers Ltd Manufacture of sheets or films
US1916108A (en) * 1930-04-07 1933-06-27 Hall Benjamin Fairfax Machine for developing photographic prints
US2676563A (en) * 1949-02-05 1954-04-27 Champion Paper & Fibre Co Apparatus for coating paper
US2981171A (en) * 1958-03-06 1961-04-25 Bruning Charles Co Inc Developer process and apparatus
US3010845A (en) * 1957-05-15 1961-11-28 Goodrich Co B F Method and apparatus for decorating web or sheet material with glitter

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US826897A (en) * 1906-07-24 Richard W Shely Machine for applying fluids to surfaces.
US1811689A (en) * 1927-08-30 1931-06-23 Spicers Ltd Manufacture of sheets or films
US1916108A (en) * 1930-04-07 1933-06-27 Hall Benjamin Fairfax Machine for developing photographic prints
US2676563A (en) * 1949-02-05 1954-04-27 Champion Paper & Fibre Co Apparatus for coating paper
US3010845A (en) * 1957-05-15 1961-11-28 Goodrich Co B F Method and apparatus for decorating web or sheet material with glitter
US2981171A (en) * 1958-03-06 1961-04-25 Bruning Charles Co Inc Developer process and apparatus

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3299791A (en) * 1963-05-27 1967-01-24 Fuji Photo Film Co Ltd Device for developing copying paper
US3307466A (en) * 1963-05-27 1967-03-07 Fuji Photo Film Co Ltd Device for applying a treating solution to sensitized paper
US3263590A (en) * 1963-07-09 1966-08-02 Robertson Photo Mechanix Inc Processor for photo-direct material
US3262381A (en) * 1963-09-30 1966-07-26 Deluxe Lab Inc Method and apparatus for improving upon the reproduction of images recorded on a photographic film
US3704662A (en) * 1970-04-27 1972-12-05 Addressograph Multigraph Liquid developing apparatus
US3769896A (en) * 1971-08-16 1973-11-06 Speed O Print Business Machine Squeegee assembly for photo-copy machines
US3874328A (en) * 1972-05-23 1975-04-01 Ricoh Kk Developing device for electrophotography
US3943541A (en) * 1972-10-21 1976-03-09 Ricoh Co., Ltd. Liquid developing apparatus for electrophotography
US4294533A (en) * 1978-03-23 1981-10-13 E. I. Du Pont De Nemours And Company Apparatus for pre-conditioning film
US5839011A (en) * 1996-08-14 1998-11-17 Mitsubishi Paper Mills Ltd. Apparatus for processing photosensitive material

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Publication number Publication date
CH396631A (de) 1965-07-31
NL275081A (enrdf_load_stackoverflow)

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