US2941898A - Production of multilayer photographic materials - Google Patents

Production of multilayer photographic materials Download PDF

Info

Publication number
US2941898A
US2941898A US776013A US77601358A US2941898A US 2941898 A US2941898 A US 2941898A US 776013 A US776013 A US 776013A US 77601358 A US77601358 A US 77601358A US 2941898 A US2941898 A US 2941898A
Authority
US
United States
Prior art keywords
coating
slot
liquid
web
support
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
US776013A
Inventor
Wynn Norman Ratcliffe
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
Priority claimed from GB39100/57A external-priority patent/GB837095A/en
Application filed by Ilford Ltd filed Critical Ilford Ltd
Application granted granted Critical
Publication of US2941898A publication Critical patent/US2941898A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • G03C1/74—Applying photosensitive compositions to the base; Drying processes therefor
    • 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
    • B29C48/911—Cooling
    • B29C48/9135—Cooling of flat articles, e.g. using specially adapted supporting means
    • B29C48/914—Cooling drums
    • 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

  • This invention relates to the processes and apparatus for the production of multilayer photographic materials.
  • photographic film consists essentially only of a light-sensitive layer on a support, it is customary to include other layers, e.g. a so-called subbing layer, which serves to increase the anchorage between the film and the light-sensitive layer, and a so-called supercoat layer which serves to protect the light-sensitive layer from mechanical damage.
  • subbing layer which serves to increase the anchorage between the film and the light-sensitive layer
  • supercoat layer which serves to protect the light-sensitive layer from mechanical damage.
  • more than one light-sensitive layer is necessary, and this is particularly the case in respect of materials for colour photography which commonly have at least three light-sensitive layers, usually with inter-layers or filter layers.
  • a process for coating a plurality of layers on a web support in the production of a photographic material comprises applying a plurality of coating liquids to the travelling support from ite States l atertt stations spaced at short distances apart, whereby'the web support picks up coating liquid from each of said stations in succession, the coating solutions after the first thus being applied to a liquid layer derived from-the next preceding coating station, each of the'said liquidsafter that first applied being metered to the support through a slot extending across theweb and constituting at its coating station a bead of coating liquid connecting the said slot and the surface being coated.
  • the first applied solution may also be meteredthrough a slot to form a bead as aforesaid.
  • the invention further includes apparatus for carrying out the process as aforesaid.
  • the support being coated travels round an upper quadrant of a horizontal drum, the coating stations being located in succession adjacent that upper quadrant so that the first coating is applied while the support is travelling in agenerally upward direction and the later coatings at positions where the support is travelling in a successively more horizontal direction.
  • the applied coatings become more'numerous, and therefore in total more substantial, the tendency to run-back due to gravity is reduced.
  • the present invention further includes apparatus for carrying out the process defined above comprising-means for causing a web support to move in a predetermined path and a plurality of coating devices each adapted to apply a liquid layer to the said web and located at-stations spaced short distances apart along the said path, each said coating device comprising a chamber having a slot therein extending across the width of the web, and means for metering coating liquid to said chamber to cause said liquid to issue through said slot, the said slot being located relative to the path of travel of the web so that liquid issuing from said slot on to the web in said path establishes and maintains a bead of said liquid between said slot and said web.
  • Figure 1 diagrammatically illustrates a form of coating apparatus according to the invention.
  • Figure 2 diagrammatically illustrates a portion of Figure 1 on an enlarged scale.
  • Figure 3 illustrates in diagrammatic section a single coating unit as employed in the apparatus of Figures 1 and 2.
  • photographic film base 1 is fed from a supply (not shown) over a roller and round a drum 2 rotating in the direction of the arrow. Successive coatings are applied at the coating stations 3, 4 and 5, and the coated film passes off the drum to drying apparatus, or through a chill box and then a drying apparatus (these elements are not characteristics of the present invention and are therefore not shown).
  • Figure 3 there is shown in cross section the coating head 4. It is shown with the film base 1 carrying a first liquid coating 6 approaching the head 4 and leaving with a second liquid coating 7 superimposed on the coating 6.
  • the coating head 4 (which is similar in construction to the coating heads 3 and 5) consists of a chamber 8 including a jacket 9 through which liquid at con-trolled temperature may be circulated.
  • the entry port of the liquid is shown at 10; the exit port is not shown on this diagram; but can be located at any convenient point.
  • Bolted to the chamber 8' by bolts 11 is a coating member 12 having a slot 13 connecting the bottom of the member 12 to an inner chamber 14.
  • Coating liquid 17 supplied via port 15 charges the inner chamber 14 and passes out through the slot 13 to lay a coating 7 on the liquid coated film 1, 6 passing beneath it.
  • a bead 16 of the liquid 17 is formed between the jaws of the slot 13 and the liquid-coated film 1, 6. It will be appreciated that the coating head 4 extends across the width of the film to be coated, i.e. the slot extends across thatwhole width.
  • the coating liquid 17 is metered to the chamber 14 by any convenient means (not shown), e.g. by means of a gear pump.
  • the slot width may vary, for example from to 60 thousandths of an inch.
  • the slot width should be as great as can conveniently be used since in this way the system becomes less sensitive to slight inaccuracies in the dimensions of the slot. Moreover, the danger of the slot becoming clogged is reduced.
  • the inner face 18 of the slot may be, for example, to inch in length. Excessively short lengths tend to increase danger of damage to the jaws of the slot, while excessively great lengths create a condition of viscous drag which may act up inaccuracies of coating.
  • the bottom faces 19 of the slot should be as large as convenient because in general if these faces are large it permits larger slot widths to be used and the jaws are also more robust. Generally they may be, for example, it; to inch in width. However, the upper practical limit is set, when the coating is being applied on a curved surface, as in the example illustrated, by the curvature of the surface adjacent the slot.
  • the gap between the slot and the surface being coated, which is bridged by the bead 16 may vary according to the other conditions. In general a gap of 5 to 60 thousandths of an inch is suitable, the preference being for larger gaps since with these, inaccuracies of the thickness of the support being coated, inaccuracies in the setting of the roller 2 and inaccuracies in the contour of that roller tend to be of less importance, and there is further a lesser danger of the gap becoming clogged.
  • the coating member 12 should not itself introduce coating defects by reason of its having a non-smooth surface; all corners should be rounded and the whole of the surfaces should be highly polished. In this way a streamlined smooth flow may be maintained in the bead.
  • the coating heads in a series have slots of increasing length across the width of the film being coated. In this way undesirable edge effects which sometimes arise when the coatings are of equal width can be avoided.
  • the apparatus has been illustrated to show the coatings being applied in a generally downward direction, this is not essential and the coating heads can be provided so that the coating is applied in a horizontal or generally upward direction.
  • the coatings are applied to film passing round a drum, this is not a necessary-feature of the invention since the coatings may be applied to film passing in a plane at any angle.
  • the coating method of the invention permits of applying to film base'thinner coating layers than can be applied by conventional methods of coating. Moreover, by the method of the invention, whereby a liquid layer is coated on to a liquid layer already present, it is possible to achieve very much thinner coatings, for example coatings as little as $6 of the thickness of those applied by conventional methods.
  • a process for coating a plurality of layers, on a web support in the production of a photographic material which comprises applying a plurality of coating liquids to the travelling support from stations spaced at short distances apart, whereby the web support picks up coating liquid from each of said stations in succession, the coating solutions after the first thus being applied to a liquid layer derived from the next preceding coating station, each of the said liquids after that first applied being metered to the support through a slot extending across the web and constituting at its coating station a bead of coating liquid connecting the said slot and the surface being coated.
  • a process for coating a plurality of layers on a web support in the production of a photographic material which comprises applying a plurality of coating liquids to the travelling support from stations spaced at short distances apart, whereby the web support picks up coating liquid from each of said stations in succession, the coating solutions after the first thus being applied to a liquid layer derived from the next preceding coating station, each of the said liquids being metered'to the support through a slot extending across the Web and constituting at its coating station a bead of coating liquid connecting the said slot and the surface being coated.
  • Apparatus for coating a plurality of layers on a web support comprising means for causing a web support to move in a predetermined path and a plurality of coating devices each adapted to apply a liquid layer to the said web and located at stations spaced short distances apart along the said path, each said coating device comprising a chamber having a slot therein extending across the width of the web, and means for metering coating liquid to said chamber to cause said liquid to issue through said slot, each said slot being located relative to the path of travel of the web so that liquid issuing from said slot on to the web in said path establishes and maintains a head of said liquid between said slot and said Web.
  • Apparatus for coating a plurality of layers on a web support comprising a drum around which the web is caused to pass in a path thus predetermined by the contour of said drum, and a plurality of coating devices each adapted to apply a liquid layer to the said web and located at stations spaced short distances apart along the said path, each said coating device comprising a chamber having a slot therein extending across the width of the web, and means for metering coating liquid to said chamber to cause said liquid to issue through said slot, each said slot being located relative to the path of travel of the web so that liquid issuing from said slot on to the web in said path establishes and maintains a bead of said liquid between said slot and said web.
  • Apparatus for coating a plurality of layers on a web support comprising a drum around which the web is caused to pass in a path thus predetermined by the contour of said drum, and a plurality of coating devices each adapted to apply a liquid layer to the said web and located at stations spaced short distances apart along the said path, each said coating device comprising a chamber having a slot therein extending across the width of the web, and means for metering coating liquid to said chamher to cause said liquid to issue through said slot, each said slot being located relative to the path of travel of the web at an upper rising gradient of the circumference of the drum so that liquid issuing from said slot on to the web in said path establishes and maintains a bead of said liquid between said slot and said web.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • General Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Coating Apparatus (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)

Description

N. R. WVYNN 2,941,898
PRODUCTION OF MULTILAYER PHOTOGRAPHIC MATERIALS June 21, 1960 Filed Nov. 24, 1958 PRODUCTION OF'MULTILAYER PHOTOGRAPHIC MATERIALS Norman Ratclitfe Wynn, Ilford, England, assignor to llford Limited, Ilford, England, a British company Filed NOV. 24, 1958, Ser. No. 776,013
Claims priority, application Great Britain Dec. 16, 1957 5 Claims. (Cl. 117-34) This invention relates to the processes and apparatus for the production of multilayer photographic materials.
Whilst photographic film consists essentially only of a light-sensitive layer on a support, it is customary to include other layers, e.g. a so-called subbing layer, which serves to increase the anchorage between the film and the light-sensitive layer, and a so-called supercoat layer which serves to protect the light-sensitive layer from mechanical damage. Moreover, it is frequently the case that more than one light-sensitive layer is necessary, and this is particularly the case in respect of materials for colour photography which commonly have at least three light-sensitive layers, usually with inter-layers or filter layers.
It is thus commonly demanded in the manufacture of photographic materials that a multiplicity of layers should be coated in superposition on a single support. Customarily the layers (which most commonly have a basis of gelatin) are coated in succession with each layer being set, and possibly dried, before the next is applied. Attempts have been made to coat a multiplicity of layers without the intervening'setting (and possibly drying), but there is then a serious difficulty in maintaining the layers entirely distinct from one another sinceeach layer after the first is being coated on the wet surface of the last applied layer.
Because of this difficulty attention has been directed to other methods of achieving the coating of several superimposed layers, and one such method proposedis to arrange that the materials for the successive layers are applied by a coating method in which the materials are in laminar flow in a bead between the outlet of a hopper and the surface of a travelling film base.
It is an object of the present invention to provide a method of satisfactory multiple coating without intermixing of the successive layers, in'which the layers are applied separately but in close succession.
According to the present invention 'a process for coating a plurality of layers on a web support in the production of a photographic material comprises applying a plurality of coating liquids to the travelling support from ite States l atertt stations spaced at short distances apart, whereby'the web support picks up coating liquid from each of said stations in succession, the coating solutions after the first thus being applied to a liquid layer derived from-the next preceding coating station, each of the'said liquidsafter that first applied being metered to the support through a slot extending across theweb and constituting at its coating station a bead of coating liquid connecting the said slot and the surface being coated. If desired the first applied solution may also be meteredthrough a slot to form a bead as aforesaid.
The invention further includes apparatus for carrying out the process as aforesaid.
The method of coating just referred to isnot to be confused with extrusion coating. in extrustion coating the liquid is extruded through the slot as a ribbon which 2341898 Patented June-21, 196i) is laid as such on the surface to be coated. ln therproc ess of the present invention it is essential that the liquid leaving the slot in metered amount should establish a bead of liquid from which liquid is-continuously withdrawn by the travelling web. It will generally be found that the bead so orients itself that one or both of the lips of the slot are wholly within the bead. I
It is found that by the aforesaid method of coating successive layers can be applied which, despite the fact that liquid coatings are being applied on to liquid layers applied from the preceding coating stations, do not intermingle but maintain their laminar integrity.
It is advantageous to arrange that the support being coated travels round an upper quadrant of a horizontal drum, the coating stations being located in succession adjacent that upper quadrant so that the first coating is applied while the support is travelling in agenerally upward direction and the later coatings at positions where the support is travelling in a successively more horizontal direction. In this way it is arranged that as the applied coatings become more'numerous, and therefore in total more substantial, the tendency to run-back due to gravity is reduced.
The present invention further includes apparatus for carrying out the process defined above comprising-means for causing a web support to move in a predetermined path and a plurality of coating devices each adapted to apply a liquid layer to the said web and located at-stations spaced short distances apart along the said path, each said coating device comprising a chamber having a slot therein extending across the width of the web, and means for metering coating liquid to said chamber to cause said liquid to issue through said slot, the said slot being located relative to the path of travel of the web so that liquid issuing from said slot on to the web in said path establishes and maintains a bead of said liquid between said slot and said web.
The invention will now be further described with reference to the accompanying drawings in which:
Figure 1 diagrammatically illustrates a form of coating apparatus according to the invention.
Figure 2 diagrammatically illustrates a portion of Figure 1 on an enlarged scale.
Figure 3 illustrates in diagrammatic section a single coating unit as employed in the apparatus of Figures 1 and 2.
Referring to Figure 1, photographic film base 1 is fed from a supply (not shown) over a roller and round a drum 2 rotating in the direction of the arrow. Successive coatings are applied at the coating stations 3, 4 and 5, and the coated film passes off the drum to drying apparatus, or through a chill box and then a drying apparatus (these elements are not characteristics of the present invention and are therefore not shown).
In Figure 2 the three coating heads 3, 4 and 5 are shown in greater detail, the applied coating liquids being shown in shading.
In Figure 3 there is shown in cross section the coating head 4. It is shown with the film base 1 carrying a first liquid coating 6 approaching the head 4 and leaving with a second liquid coating 7 superimposed on the coating 6.
The coating head 4 (which is similar in construction to the coating heads 3 and 5) consists of a chamber 8 including a jacket 9 through which liquid at con-trolled temperature may be circulated. The entry port of the liquid is shown at 10; the exit port is not shown on this diagram; but can be located at any convenient point. Bolted to the chamber 8' by bolts 11 is a coating member 12 having a slot 13 connecting the bottom of the member 12 to an inner chamber 14. Coating liquid 17 supplied via port 15 charges the inner chamber 14 and passes out through the slot 13 to lay a coating 7 on the liquid coated film 1, 6 passing beneath it. As indicated, a bead 16 of the liquid 17 is formed between the jaws of the slot 13 and the liquid-coated film 1, 6. It will be appreciated that the coating head 4 extends across the width of the film to be coated, i.e. the slot extends across thatwhole width.
The coating liquid 17 is metered to the chamber 14 by any convenient means (not shown), e.g. by means of a gear pump.
For optimum results care must be given to the design of the coating member 12 and in particular to the shape of the jaws of the slot 13. In the coating of photographic emulsions of the normal range of viscosities the slot width may vary, for example from to 60 thousandths of an inch. In general the slot width should be as great as can conveniently be used since in this way the system becomes less sensitive to slight inaccuracies in the dimensions of the slot. Moreover, the danger of the slot becoming clogged is reduced.
The inner face 18 of the slot may be, for example, to inch in length. Excessively short lengths tend to increase danger of damage to the jaws of the slot, while excessively great lengths create a condition of viscous drag which may act up inaccuracies of coating.
The bottom faces 19 of the slot should be as large as convenient because in general if these faces are large it permits larger slot widths to be used and the jaws are also more robust. Generally they may be, for example, it; to inch in width. However, the upper practical limit is set, when the coating is being applied on a curved surface, as in the example illustrated, by the curvature of the surface adjacent the slot.
The gap between the slot and the surface being coated, which is bridged by the bead 16, may vary according to the other conditions. In general a gap of 5 to 60 thousandths of an inch is suitable, the preference being for larger gaps since with these, inaccuracies of the thickness of the support being coated, inaccuracies in the setting of the roller 2 and inaccuracies in the contour of that roller tend to be of less importance, and there is further a lesser danger of the gap becoming clogged.
Apart from the foregoing dimensional conditions it is important, if the best results are to be obtained, that the coating member 12 should not itself introduce coating defects by reason of its having a non-smooth surface; all corners should be rounded and the whole of the surfaces should be highly polished. In this way a streamlined smooth flow may be maintained in the bead.
Further, in the preferred form of the invention the coating heads in a series have slots of increasing length across the width of the film being coated. In this way undesirable edge effects which sometimes arise when the coatings are of equal width can be avoided.
Although the apparatus has been illustrated to show the coatings being applied in a generally downward direction, this is not essential and the coating heads can be provided so that the coating is applied in a horizontal or generally upward direction. Moreover, although in the illustration given the coatings are applied to film passing round a drum, this is not a necessary-feature of the invention since the coatings may be applied to film passing in a plane at any angle.
The coating method of the invention permits of applying to film base'thinner coating layers than can be applied by conventional methods of coating. Moreover, by the method of the invention, whereby a liquid layer is coated on to a liquid layer already present, it is possible to achieve very much thinner coatings, for example coatings as little as $6 of the thickness of those applied by conventional methods.
What I claim is:
1. A process for coating a plurality of layers, on a web support in the production of a photographic material which comprises applying a plurality of coating liquids to the travelling support from stations spaced at short distances apart, whereby the web support picks up coating liquid from each of said stations in succession, the coating solutions after the first thus being applied to a liquid layer derived from the next preceding coating station, each of the said liquids after that first applied being metered to the support through a slot extending across the web and constituting at its coating station a bead of coating liquid connecting the said slot and the surface being coated.
2. A process for coating a plurality of layers on a web support in the production of a photographic material which comprises applying a plurality of coating liquids to the travelling support from stations spaced at short distances apart, whereby the web support picks up coating liquid from each of said stations in succession, the coating solutions after the first thus being applied to a liquid layer derived from the next preceding coating station, each of the said liquids being metered'to the support through a slot extending across the Web and constituting at its coating station a bead of coating liquid connecting the said slot and the surface being coated. 3. Apparatus for coating a plurality of layers on a web support comprising means for causing a web support to move in a predetermined path and a plurality of coating devices each adapted to apply a liquid layer to the said web and located at stations spaced short distances apart along the said path, each said coating device comprising a chamber having a slot therein extending across the width of the web, and means for metering coating liquid to said chamber to cause said liquid to issue through said slot, each said slot being located relative to the path of travel of the web so that liquid issuing from said slot on to the web in said path establishes and maintains a head of said liquid between said slot and said Web.
4. Apparatus for coating a plurality of layers on a web support comprising a drum around which the web is caused to pass in a path thus predetermined by the contour of said drum, and a plurality of coating devices each adapted to apply a liquid layer to the said web and located at stations spaced short distances apart along the said path, each said coating device comprising a chamber having a slot therein extending across the width of the web, and means for metering coating liquid to said chamber to cause said liquid to issue through said slot, each said slot being located relative to the path of travel of the web so that liquid issuing from said slot on to the web in said path establishes and maintains a bead of said liquid between said slot and said web.
5. Apparatus for coating a plurality of layers on a web support comprising a drum around which the web is caused to pass in a path thus predetermined by the contour of said drum, and a plurality of coating devices each adapted to apply a liquid layer to the said web and located at stations spaced short distances apart along the said path, each said coating device comprising a chamber having a slot therein extending across the width of the web, and means for metering coating liquid to said chamher to cause said liquid to issue through said slot, each said slot being located relative to the path of travel of the web at an upper rising gradient of the circumference of the drum so that liquid issuing from said slot on to the web in said path establishes and maintains a bead of said liquid between said slot and said web.
References Cited in the file of this patent UNITED STATES PATENTS 2,681,294 Beguin June 15, 1954 2,761,417 Russell et al. Sept. 4, 1956 2,761,419 Mercier et al. Sept. 4, 1956 2,761,791 A Russell Sept. 4, i956

Claims (1)

1. A PROCESS FOR COATING A PLURALITY OF LAYERS ON A WEB SUPPORT IN THE PRODUCTION OF A PHOTOGRAPHIC MATERIAL WHICH COMPRISES APPLYING A PLURALITY OF COATING LIQUIDS TO THE TRAVELLING SUPPORT FROM STATIONS SPACED AT SHORT DISTANCES APART, WHEREBY THE WEB SUPPORT PICKS UP COATING LIQUID FROM EACH OF SAID STATIONS IN SUCCESSION, THE COATING SOLUTIONS AFTER THE FIRST THUS BEING APPLIED TO A LIQUID LAYER DERIVED FROM THE NEXT PRECEDING COATING STATION, EACH OF THE SAID LIQUIDS AFTER THAT FIRST APPLIED BEING METERED TO THE SUPPORT THROUGH A SLOT EXTENDING ACROSS THE WEB AND CONSTITUTING AT ITS COATING STATION A BEAD OF COATING LIQUID CONNECTING THE SAID SLOT AND THE SURFACE BEING COATED.
US776013A 1957-12-16 1958-11-24 Production of multilayer photographic materials Expired - Lifetime US2941898A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US77601357A 1957-12-16 1957-12-16
GB39100/57A GB837095A (en) 1957-12-16 1957-12-16 Improvements in or relating to the production of multilayer photographic materials

Publications (1)

Publication Number Publication Date
US2941898A true US2941898A (en) 1960-06-21

Family

ID=32396021

Family Applications (1)

Application Number Title Priority Date Filing Date
US776013A Expired - Lifetime US2941898A (en) 1957-12-16 1958-11-24 Production of multilayer photographic materials

Country Status (2)

Country Link
US (1) US2941898A (en)
FR (1) FR1215994A (en)

Cited By (47)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3123492A (en) * 1962-02-28 1964-03-03 Maffet
US3539426A (en) * 1966-01-13 1970-11-10 Fuji Photo Film Co Ltd Multiple layer coating method
US3632374A (en) * 1968-06-03 1972-01-04 Eastman Kodak Co Method of making photographic elements
US3756195A (en) * 1970-07-16 1973-09-04 Eastman Kodak Co Apparatus for coating a continuous web
DE2351369A1 (en) * 1973-10-12 1975-04-17 Ciba Geigy Ag COATING DEVICE
DE2844775A1 (en) * 1977-10-14 1979-04-19 Eastman Kodak Co METHOD OF MANUFACTURING A PHOTOGRAPHICAL MATERIAL WITH A PAPER SUPPORT
US4187930A (en) * 1978-04-27 1980-02-12 TRW Inc., Systems & Energy Dispensing method and system for lubricating oil and other liquids
EP0124795A2 (en) 1983-04-11 1984-11-14 Fuji Photo Film Co., Ltd. Silver halide photographic emulsion
EP0200502A2 (en) 1985-04-30 1986-11-05 Konica Corporation Light-sensitive silver halide color photographic material
EP0204530A2 (en) 1985-05-31 1986-12-10 Konica Corporation Method for forming direct positive color image
US4663218A (en) * 1984-08-27 1987-05-05 Fuji Photo Film Co., Ltd. Packaging film for photosensitive materials for photographic purpose
US4948654A (en) * 1989-02-27 1990-08-14 Eastman Kodak Company Sheet material useful in forming protective and decorative coatings
EP0607905A2 (en) 1993-01-18 1994-07-27 Fuji Photo Film Co., Ltd. Silver halide photographic material
US5354646A (en) * 1986-03-26 1994-10-11 Konishiroku Photo Industry Co., Ltd. Method capable of rapidly processing a silver halide color photographic light-sensitive material
US5376178A (en) * 1991-07-31 1994-12-27 Sony Corporation Coating apparatus
US5718981A (en) * 1996-02-02 1998-02-17 Eastman Kodak Company Polyester photographic film support
US6040130A (en) * 1997-02-10 2000-03-21 Eastman Kodak Company Photothermographic and thermographic films containing low levels of unsaturated fatty acid to prevent fog
DE4400812C2 (en) * 1994-01-13 2002-06-13 Emtec Magnetics Gmbh coater
US20030138720A1 (en) * 2001-08-02 2003-07-24 Fuji Photo Film Co., Ltd. Multicolor heat-sensitive recording material
US20060078754A1 (en) * 2004-10-13 2006-04-13 Konica Minolta Opto, Inc. Optical film, polarizing plate and display
WO2006109618A1 (en) 2005-04-05 2006-10-19 Adeka Corporation Cyanine compounds, optical filters and optical recording materials
WO2007018015A1 (en) 2005-08-11 2007-02-15 Adeka Corporation Indole compound, optical filter and optical recording material
WO2007105416A1 (en) 2006-03-14 2007-09-20 Adeka Corporation Optical recording medium
US20070231479A1 (en) * 2006-03-30 2007-10-04 Fujifilm Corporation Coating apparatus, coating method, and method for manufacturing optical film
WO2007129503A1 (en) 2006-05-08 2007-11-15 Adeka Corporation Novel compound, optical filter using the compound, and optical recording material
EP1925954A2 (en) 2006-11-21 2008-05-28 FUJIFILM Corporation Process of producing patterned birefringent product
WO2008072537A1 (en) 2006-12-15 2008-06-19 Adeka Corporation Optical filter
EP1980901A1 (en) 2007-04-12 2008-10-15 Fujifilm Corporation Process of producing a substrate for liquid crystal display devices comprising a patterned optical retarder
WO2008123404A1 (en) 2007-03-30 2008-10-16 Adeka Corporation Cyanine compound, optical filter using the compound and optical recording material
EP2124076A1 (en) 2008-05-21 2009-11-25 Fujifilm Corporation Birefringent pattern builder and laminated structure material for preventing forgery
WO2009145057A1 (en) 2008-05-27 2009-12-03 株式会社Adeka Color correction material, film-forming composition, and optical filter
EP2136270A2 (en) 2008-06-16 2009-12-23 Fujifilm Corporation Medium for preventing forgery
EP2187271A1 (en) 2008-11-07 2010-05-19 Fujifilm Corporation Foil for preventing forgery comprising a birefringent pattern
WO2010073857A1 (en) 2008-12-25 2010-07-01 株式会社Adeka Near-infrared-ray absorbing material containing cyanine compound, and cyanine compound
EP2259102A1 (en) 2009-05-26 2010-12-08 FUJIFILM Corporation Viewer and kit for authenticating birefringent pattern, authenticity-verifying medium and method of verifying authenticity
EP2280298A1 (en) 2009-07-31 2011-02-02 Fujifilm Corporation Method of producing patterned birefringent product and birefringent pattern building material
WO2011030883A1 (en) 2009-09-14 2011-03-17 Fujifilm Corporation Color filter and light-emitting display element
WO2011086785A1 (en) 2010-01-15 2011-07-21 株式会社Adeka Color tone correcting agent, squarylium compound and optical filter
EP2372412A1 (en) 2010-03-26 2011-10-05 Fujifilm Corporation Patterned birefringent product
EP2385425A1 (en) 2010-05-07 2011-11-09 Fujifilm Corporation Silver halide photographic light-sensitive material for movie
EP2404763A2 (en) 2010-07-09 2012-01-11 Fujifilm Corporation Counterfeiting prevention device having printing and birefringence pattern
EP2413168A1 (en) 2010-07-28 2012-02-01 Fujifilm Corporation Birefringence pattern builder
WO2012035314A1 (en) 2010-09-17 2012-03-22 Fujifilm Manufacturing Europe Bv Photographic paper
WO2012067128A1 (en) 2010-11-19 2012-05-24 富士フイルム株式会社 Double-refraction pattern transfer foil
WO2013042737A1 (en) 2011-09-21 2013-03-28 富士フイルム株式会社 Object including latent image
WO2013047633A1 (en) 2011-09-28 2013-04-04 富士フイルム株式会社 Object having latent image and latent image photography device which photographs same
WO2021213762A1 (en) 2020-04-24 2021-10-28 Fujifilm Manufacturing Europe Bv Photographic paper

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2681294A (en) * 1951-08-23 1954-06-15 Eastman Kodak Co Method of coating strip material
US2761417A (en) * 1955-02-23 1956-09-04 Eastman Kodak Co Multiple coating apparatus

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2681294A (en) * 1951-08-23 1954-06-15 Eastman Kodak Co Method of coating strip material
US2761417A (en) * 1955-02-23 1956-09-04 Eastman Kodak Co Multiple coating apparatus
US2761419A (en) * 1955-02-23 1956-09-04 Eastman Kodak Co Multiple coating apparatus
US2761791A (en) * 1955-02-23 1956-09-04 Eastman Kodak Co Method of multiple coating

Cited By (51)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3123492A (en) * 1962-02-28 1964-03-03 Maffet
US3539426A (en) * 1966-01-13 1970-11-10 Fuji Photo Film Co Ltd Multiple layer coating method
US3632374A (en) * 1968-06-03 1972-01-04 Eastman Kodak Co Method of making photographic elements
US3756195A (en) * 1970-07-16 1973-09-04 Eastman Kodak Co Apparatus for coating a continuous web
DE2351369A1 (en) * 1973-10-12 1975-04-17 Ciba Geigy Ag COATING DEVICE
DE2844775A1 (en) * 1977-10-14 1979-04-19 Eastman Kodak Co METHOD OF MANUFACTURING A PHOTOGRAPHICAL MATERIAL WITH A PAPER SUPPORT
FR2406232A1 (en) * 1977-10-14 1979-05-11 Eastman Kodak Co METHOD OF MANUFACTURING A PHOTOGRAPHIC PRODUCT ON A PAPER SUPPORT
US4187930A (en) * 1978-04-27 1980-02-12 TRW Inc., Systems & Energy Dispensing method and system for lubricating oil and other liquids
EP0124795A2 (en) 1983-04-11 1984-11-14 Fuji Photo Film Co., Ltd. Silver halide photographic emulsion
US4663218A (en) * 1984-08-27 1987-05-05 Fuji Photo Film Co., Ltd. Packaging film for photosensitive materials for photographic purpose
EP0200502A2 (en) 1985-04-30 1986-11-05 Konica Corporation Light-sensitive silver halide color photographic material
EP0204530A2 (en) 1985-05-31 1986-12-10 Konica Corporation Method for forming direct positive color image
US5354646A (en) * 1986-03-26 1994-10-11 Konishiroku Photo Industry Co., Ltd. Method capable of rapidly processing a silver halide color photographic light-sensitive material
US4948654A (en) * 1989-02-27 1990-08-14 Eastman Kodak Company Sheet material useful in forming protective and decorative coatings
US5376178A (en) * 1991-07-31 1994-12-27 Sony Corporation Coating apparatus
EP0607905A2 (en) 1993-01-18 1994-07-27 Fuji Photo Film Co., Ltd. Silver halide photographic material
DE4400812C2 (en) * 1994-01-13 2002-06-13 Emtec Magnetics Gmbh coater
US5718981A (en) * 1996-02-02 1998-02-17 Eastman Kodak Company Polyester photographic film support
US6040130A (en) * 1997-02-10 2000-03-21 Eastman Kodak Company Photothermographic and thermographic films containing low levels of unsaturated fatty acid to prevent fog
US20030138720A1 (en) * 2001-08-02 2003-07-24 Fuji Photo Film Co., Ltd. Multicolor heat-sensitive recording material
US20060078754A1 (en) * 2004-10-13 2006-04-13 Konica Minolta Opto, Inc. Optical film, polarizing plate and display
WO2006109618A1 (en) 2005-04-05 2006-10-19 Adeka Corporation Cyanine compounds, optical filters and optical recording materials
WO2007018015A1 (en) 2005-08-11 2007-02-15 Adeka Corporation Indole compound, optical filter and optical recording material
WO2007105416A1 (en) 2006-03-14 2007-09-20 Adeka Corporation Optical recording medium
EP2360694A1 (en) 2006-03-14 2011-08-24 Adeka Corporation Optical recording medium
EP2360023A1 (en) 2006-03-14 2011-08-24 Adeka Corporation Optical recording medium
US20070231479A1 (en) * 2006-03-30 2007-10-04 Fujifilm Corporation Coating apparatus, coating method, and method for manufacturing optical film
US7713579B2 (en) 2006-03-30 2010-05-11 Fujifilm Corporation Coating apparatus, coating method, and method for manufacturing optical film
WO2007129503A1 (en) 2006-05-08 2007-11-15 Adeka Corporation Novel compound, optical filter using the compound, and optical recording material
EP1925954A2 (en) 2006-11-21 2008-05-28 FUJIFILM Corporation Process of producing patterned birefringent product
WO2008072537A1 (en) 2006-12-15 2008-06-19 Adeka Corporation Optical filter
WO2008123404A1 (en) 2007-03-30 2008-10-16 Adeka Corporation Cyanine compound, optical filter using the compound and optical recording material
EP1980901A1 (en) 2007-04-12 2008-10-15 Fujifilm Corporation Process of producing a substrate for liquid crystal display devices comprising a patterned optical retarder
EP2124076A1 (en) 2008-05-21 2009-11-25 Fujifilm Corporation Birefringent pattern builder and laminated structure material for preventing forgery
WO2009145057A1 (en) 2008-05-27 2009-12-03 株式会社Adeka Color correction material, film-forming composition, and optical filter
EP2136270A2 (en) 2008-06-16 2009-12-23 Fujifilm Corporation Medium for preventing forgery
EP2187271A1 (en) 2008-11-07 2010-05-19 Fujifilm Corporation Foil for preventing forgery comprising a birefringent pattern
WO2010073857A1 (en) 2008-12-25 2010-07-01 株式会社Adeka Near-infrared-ray absorbing material containing cyanine compound, and cyanine compound
EP2259102A1 (en) 2009-05-26 2010-12-08 FUJIFILM Corporation Viewer and kit for authenticating birefringent pattern, authenticity-verifying medium and method of verifying authenticity
EP2280298A1 (en) 2009-07-31 2011-02-02 Fujifilm Corporation Method of producing patterned birefringent product and birefringent pattern building material
WO2011030883A1 (en) 2009-09-14 2011-03-17 Fujifilm Corporation Color filter and light-emitting display element
WO2011086785A1 (en) 2010-01-15 2011-07-21 株式会社Adeka Color tone correcting agent, squarylium compound and optical filter
EP2372412A1 (en) 2010-03-26 2011-10-05 Fujifilm Corporation Patterned birefringent product
EP2385425A1 (en) 2010-05-07 2011-11-09 Fujifilm Corporation Silver halide photographic light-sensitive material for movie
EP2404763A2 (en) 2010-07-09 2012-01-11 Fujifilm Corporation Counterfeiting prevention device having printing and birefringence pattern
EP2413168A1 (en) 2010-07-28 2012-02-01 Fujifilm Corporation Birefringence pattern builder
WO2012035314A1 (en) 2010-09-17 2012-03-22 Fujifilm Manufacturing Europe Bv Photographic paper
WO2012067128A1 (en) 2010-11-19 2012-05-24 富士フイルム株式会社 Double-refraction pattern transfer foil
WO2013042737A1 (en) 2011-09-21 2013-03-28 富士フイルム株式会社 Object including latent image
WO2013047633A1 (en) 2011-09-28 2013-04-04 富士フイルム株式会社 Object having latent image and latent image photography device which photographs same
WO2021213762A1 (en) 2020-04-24 2021-10-28 Fujifilm Manufacturing Europe Bv Photographic paper

Also Published As

Publication number Publication date
FR1215994A (en) 1960-04-21

Similar Documents

Publication Publication Date Title
US2941898A (en) Production of multilayer photographic materials
US3526528A (en) Multiple doctor coating process and apparatus
US2975754A (en) Multiple coating apparatus
US3289632A (en) Cascade coating apparatus for applying plural layers of coating material to a moving web
US4233346A (en) Method and apparatus for applying a plurality of superposed layers to a web by curtain coating
US4313980A (en) Method and device for slide hopper multilayer coating
US4521457A (en) Simultaneous formation and deposition of multiple ribbon-like streams
US2932855A (en) Method for forming film or sheeting
US4572849A (en) Process for the multiple coating of moving webs
EP0622667B1 (en) Method of simultaneous multilayer application
US3502494A (en) Process and apparatus for continuous fluid coating of a traveling web
GB837095A (en) Improvements in or relating to the production of multilayer photographic materials
GB1358298A (en) Method and apparatus for caoting continuous web
EP0390774A1 (en) High speed curtain coating process and apparatus.
JP3118095B2 (en) Liquid distribution equipment for photographic coating equipment
US3903843A (en) Coating apparatus
US3573965A (en) Multilayer coating method
JPH0566193B2 (en)
US4921729A (en) Two-layer coating method
US3584600A (en) Multiple doctor blade coating apparatus
US3496005A (en) Method for coating a plurality of liquid layers on a web
US5545256A (en) Coating apparatus
EP0850696B1 (en) Process for coating a light-sensitive material
US3539426A (en) Multiple layer coating method
EP0969314B1 (en) Curtain coating method