EP0372783A1 - Trägerblatt für photographische Abzüge - Google Patents

Trägerblatt für photographische Abzüge Download PDF

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Publication number
EP0372783A1
EP0372783A1 EP89312311A EP89312311A EP0372783A1 EP 0372783 A1 EP0372783 A1 EP 0372783A1 EP 89312311 A EP89312311 A EP 89312311A EP 89312311 A EP89312311 A EP 89312311A EP 0372783 A1 EP0372783 A1 EP 0372783A1
Authority
EP
European Patent Office
Prior art keywords
sheet
layer
support sheet
roughened
coating layer
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP89312311A
Other languages
English (en)
French (fr)
Other versions
EP0372783B1 (de
Inventor
Masahiro Kamiya
Masahiro Yamana
Katsuhiko Sakata
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.)
New Oji Paper Co Ltd
Original Assignee
New Oji Paper Co Ltd
Oji Paper Co 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 JP31010388A external-priority patent/JPH02157746A/ja
Priority claimed from JP2760989A external-priority patent/JPH02208649A/ja
Application filed by New Oji Paper Co Ltd, Oji Paper Co Ltd filed Critical New Oji Paper Co Ltd
Publication of EP0372783A1 publication Critical patent/EP0372783A1/de
Application granted granted Critical
Publication of EP0372783B1 publication Critical patent/EP0372783B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • G03C1/76—Photosensitive materials characterised by the base or auxiliary layers
    • G03C1/775—Photosensitive materials characterised by the base or auxiliary layers the base being of paper
    • G03C1/79—Macromolecular coatings or impregnations therefor, e.g. varnishes

Definitions

  • the present invention relates to a support sheet for a photographic printing paper. More partic­ularly, the present invention relates to a support sheet for a photographic printing paper having an improved applicability to a photographic emulsion-coating machine and automatic developing machine at a high speed.
  • a water-resistant resin-coated support sheet is generally used as the support sheet for a photographic printing paper, to cope with the high speed developing treatment required for photographic papers.
  • This support sheet is prepared by the extrusion-lamination method in which a molten heat-­resistant resin is coated on both surfaces of a substrate sheet, and then solidified by cooling.
  • the front surface, on which a photographic emulsion layer is to be formed is coated with a resinous layer containing a white pigment, and the back surface is coated with a pigment-free resinous layer.
  • the surface opposite to the front surface, on which a photographic emulsion layer is to be formed i.e., the back surface
  • the back surface is roughened to enhance a slipping property to the surface of the photographic emulsion layer when photographic papers are piled, or to improve the typewriter printability thereof.
  • the roughened back surface of the support sheet is formed in a manner such that, in a melt extrusion coating of the back surface of the substrate sheet with a resinous layer, a surface-roughened cooling roll surface is brought into contact with and pressed against the molten resinous layer to transfer the roughened surface pattern of the roll to the resinous layer.
  • a backcoat layer is further formed on the roughened back surface coating resinous layer. This back coat layer imparts an enhanced writing property, printability, and electroconductivity to the photographic paper.
  • the photographic paper is developed by using an automatic developing machine, and the treating speed is usually 20 to 60 m/min in a developing zone and 30 to 100 m/min in a subsequent cutting zone.
  • the treating speed is usually 20 to 60 m/min in a developing zone and 30 to 100 m/min in a subsequent cutting zone.
  • the back surface of the photographic paper comes into contact with many fixed guides while the photographic paper is advancing, and causes white deposits to be formed on the guides. These deposits often are the cause of problems in the developing operation.
  • the treatment speed is as high as 50 m/min or more, the generation of these white deposits becomes conspicuous, and if the amount of the deposits becomes very large, it is necessary to stop and clean the machine. The removal of the deposits is not easy, and thus the productivity at the developing treatment is lowered, and therefore, there is a need to solve this problem.
  • a silver halide photographic emulsion layer not only a silver halide photographic emulsion layer but also a protecting layer, an undercoat layer or an intermediate layer, or a halation-preventing layer or an ultraviolet ray-absorbing layer is coated, each as a single layer or laminated multiple layers on the support sheet for a photographic paper.
  • a blue-­sensitive emulsion layer and an intermediate layer In a color-photographic paper sheet, a blue-­sensitive emulsion layer and an intermediate layer, a green-sensitive emulsion layer and an intermediate layer, and a red-sensitive emulsion layer and a protecting layer are coated in the form of laminated layers on a support sheet.
  • a photographic emulsion layer having a smooth and high gloss surface, a low gloss surface, a silk-like surface or a fine-grained surface is formed in accordance with the surface conditions of the front surface coating layer of the support sheet.
  • the front surface of the support sheet for photographic paper is usually hydrophobic, as is well-known in the art, to firmly coat the front surface with a hydrophilic photographic emulsion layer, the front surface of the support sheet, on which the photographic emulsion layer is to be formed, is rendered hydrophilic by applying a corona discharge treatment, a flame treatment or a cold plasma treatment.
  • a support sheet for photographic paper having a smooth and glossy surface is coated with a photographic emulsion
  • the emulsion is generally applied at a speed of 100 to 200 m/min, but where a support sheet for photographic paper has a roughened surface, such as a silk-like surface, a low gloss surface or a fine-gained surface, if the emulsion-coating speed is higher than 100 m/min, sometimes disadvantages such as mottling of the emulsion layers (hereinafter referred to as "emulsion layer mottling”) and a repelling of the emulsion occur.
  • emulsion layer mottling mottling of the emulsion layers
  • the photographic paper sheet having the above-mentioned disadvantages such as emulsion layer mottle and emulsion-repelling is subjected to photo­graphic printing and developing operations, the resultant photographic print has an uneven color density and mottling occurs in a color print, and thus the photographic paper sheet is evaluated as having a very poor quality.
  • a new type of support sheet for photographic paper which sheet has a front surface capable of being evenly coated with a photographic emulsion at a high speed and high productivity without mottling or repelling of the photographic emulsion.
  • An object of the present invention is to provide a support sheet for photographic printing paper, which support sheet can be evenly coated with a photographic emulsion at a high speed without a mottling or repelling of the photographic emulsion, and is useful for producing photographic printing paper able to be developed by an automatic developing machine at a high speed without forming white deposits.
  • the support sheet of the present invention for photographic printing paper which comprises a substrate sheet; a front surface coating layer formed on the front surface of the substrate sheet (to be coated with a photographic emulsion) and comprising a water-proof, thermoplastic resinous material; and a back surface coating layer formed on the back surface of the substrate sheet and comprising a water-proof, thermoplastic resinous material, at least one of the front and back surface coating layers having a number of fine crater-shaped concavities adjacent to each other through ridgeline-­shaped convexities.
  • the inventors of the present invention analyzed the white deposits produced in an automatic developing machine to clarify the cause of this formation of white deposits, and as a result found that, even in a support sheet having a backcoat layer, the white deposits contain not only the backcoat composition but also a large amount of the back surface coating layer-forming resin material (for example, polyethylene). That is, the white deposits are formed in such a manner that, when the back surface is in frictional contact with the fixed members of the developing machine at a high speed, protruding portions of the backcoat layers are peeled and the resin material of the coating layer is softened by frictional heat and protruding portions of the coating layer are removed, and the removed portions of the backcoat layer and the coating layer are fusion-­bonded to one another.
  • the white deposits are formed in such a manner that, when the back surface is in frictional contact with the fixed members of the developing machine at a high speed, protruding portions of the backcoat layers are peeled and the resin material of the coating layer is softened by frictional heat and pro
  • the inventors of the present invention carried out research into conditions which allow a high-speed coating of a photographic emulsion on a front surface of a support sheet without causing such disadvantages as emulsion layer mottle and repelling of the emulsion, and as a result found that, when the front surface of the support sheet has many smooth and round fine crater-­shaped concavities adjoining one another through ridgeline-shaped convexities, the emulsion-coating speed can be greatly increased.
  • At least one of the front and back surface resinous coating layers has a number of fine crater-shaped concavities adjacent to each other through ridgeline-shaped convexities.
  • the specific roughened surface of the front surface resinous coating layer of the support sheet of the present invention effectively enables an even and smooth coating of the photographic emulsion on the front surface resinous coating layer without mottling and repelling of the resultant emulsion layers.
  • the specific roughened surface of the back surface resinous coating layer of the support sheet of the present invention effectively prevents or restricts the production of white deposits in the developing operation of the resultant photographic paper sheet by an automatic developing machine.
  • the crater-shaped concavities formed on the resinous coating layer preferably have an average depth of 3 to 17 ⁇ m, more preferably 4 to 15 ⁇ m, in terms of the ten point average surface roughness R Z , determined in accordance with Japanese Industrial Standard (JIS) B 0601.
  • JIS Japanese Industrial Standard
  • the average depth of the crater-shaped concavities on the front surface is less than 3 ⁇ m, the above-mentioned advantages of the roughened surface disappear when the roughened front surface is coated with the photographic emulsion. Also, if the average depth is more than 17 ⁇ m, when the emulsion is applied to the roughened surface, the mottling and repelling of the emulsion layer often occur.
  • the back surface of the resultant photographic paper sheet is in too close a contact with the photographic emulsion layer surface of the next photographic paper sheet on which the above-mentioned sheet is superimposed, and the slipping property of the back surface to the next sheet photographic emulsion layer surface becomes unsatisfactory.
  • the average depth of the crater-shaped concavities or the average height of the ridgeline-shaped convexities in the back surface coating layer is more than 17 ⁇ m, the ridgeline-shaped convexities may scratch the photographic emulsion layer on which the back surface coating layer is superimposed.
  • the crater-shaped concavities preferably have an average diameter of 5 to 30 ⁇ m, more preferably 10 to 20 ⁇ m. If the average diameter of the crater-shaped concavities in the front surface coating layer is less than 5 ⁇ m, the above-mentioned disadvantages of the roughened surface disappear when the roughened front surface is coated with the photographic emulsion.
  • the resultant photographic emulsion layer surface is mottled and irregularly patterned.
  • the average diameter of the crater-shaped concavities when the average diameter of the crater-shaped concavities is less than 5 ⁇ m, the slipping property of the resultant roughened back surface of the photographic paper sheet to the adjacent photographic emulsion layer of another photographic paper sheet on which the above-mentioned sheet is superimposed is poor, and thus the operability of the photographic paper sheets in the automatic developing machine becomes poor.
  • the average diameter of the crater-shaped concavities is more than 30 ⁇ m in the roughened back surface coating layer, the photographic emulsion layer of the photographic paper sheet is scratched by the resultant roughened back surface of another photographic paper sheet on which the above-mentioned sheet is superimposed and thus the gloss of the front surface of the resultant photographic paper sheet is reduced.
  • the substrate sheet usable for the support sheet of the present invention usually consists of a paper sheet.
  • This paper sheet is formed from a pulp material comprising as a main component, a natural pulp, and optionally, a synthetic pulp or a synthetic fibers.
  • an additive comprising at least one member selected from a sizing agent, a strengthening agent, a fluorescent brightening agent, and an antistatic agent may be internally added to the pulp material or coated on the paper sheet for the support sheet.
  • the back or front surface coating layer is formed from a thermoplastic, water-proof resinous material.
  • the thermoplastic resinous material comprises a polyolefin resin, more preferably a polyethylene resin.
  • the thermoplastic resin coating layer can be easily surface-roughened by contact with a roughened peripheral surface of a cooling roller when the thermoplastic resin is extrusion coated onto a surface of a substrate sheet and while the coated thermoplastic resin layer on the substrate sheet surface remains soft.
  • the roughened surface of the present invention having a number of crater-shaped concavities surrounded by a number of ridgeline-shaped convexities is preferably formed by the following methods, but the roughened surface-forming methods are not limited to those methods.
  • a low gloss roughened surface can be formed on the thermoplastic resin coating layer by the following method.
  • a smooth peripheral surface of a steel roller plated or not plated with copper is mechanically roughened by applying a sand-blasting treatment or a liquid honing treatment thereto to provide a number of fine convexities 1 and concavities 2 on the peripheral surface.
  • the surface roughness of the resultant roughened surface of the steel roller is preferably controlled to, for example, 3 to 17 ⁇ m, more preferably 4 to 15 ⁇ m, determined by the ten point average surface roughness (R Z ) method, JIS B 0601.
  • the resultant roughened surface is plated with a metal to form a plating layer 3 as shown in Fig. 2, to cover the convexities 1 and the concavities 2 on the roller surface, and a number of hemisphere-shaped convexities 4 adjoining each other through narrow concavities 5 are formed in the plating layer.
  • the metal to be plated is not limited to a specific group of metals, but in view of the plating operability, hardness, and wear-resistance, the plating metal is preferably a chromium material, more preferably a hard chromium material.
  • the plating layer has a thickness of 10 to 60 ⁇ m, more preferably 10 to 50 ⁇ m.
  • the resultant surface-roughened roller is used as a cooling roller for the coating layer applied on the substrate sheet and comprising the thermoplastic resin.
  • the roughened peripheral surface of the cooling roller is pressed against the thermoplastic resin coating layer to transfer the roughened surface pattern of the cooling roller surface to the surface of the thermoplastic resin coating layer, to form a number of crater-shaped concavities 6 adjoining each other at ridgeline (or narrow spin)-shaped convexities 7 as shown in Fig. 3.
  • the concavities and convexities on the cooling roller surface are inverse to the convexities and concavities on the coating layer surface.
  • the thickness of the plating metal layer on the cooling roller surface is less than 10 ⁇ m, it is difficult to form hemispherical convexities having smooth and round surfaces around the convexities formed on the cooling roller surface by the mechanical surface roughening methods. Also, the resultant support sheet has an unsatisfactorily roughened coating layer surface, and is not suitable for a photographic emulsion-coating procedure at a high speed or for a developing procedure at a high speed.
  • the resultant plated roller surface exhibits an unsatisfactory surface roughness, i.e., the resultant convexities on the cooling roller surface have a low height, and thus the resultant crater-shaped concavities on the coating layer have an excessively small depth.
  • the temperature of the plating bath and the plating electric current density and other plating conditions should be controlled to obtain a predetermined thickness of the plating metal layer.
  • an iron core roller is optionally plated with copper and is subjected to a embossing treatment using an embossing roller having, for example, a hexagonal pattern, the embossed surface is subject to a mechanical roughened treatment to form very fine convexities and concavities on the embossed surface, and the roughened surface is then plated.
  • the roughness of the cooling roller surface is preferably 4 to 18 ⁇ m in terms of R Z .
  • the plating is preferably carried out with chromium, more preferably hard chromium. Also, preferably the thickness of the plating layer is 10 to 60 ⁇ m.
  • the front surface coating layer is optionally coated with a sub-coat layer comprising a hydrophilic polymeric binder, to enhance an adhesive force of the support sheet to the photographic emulsion layer.
  • the back surface coating layer is optionally coated with a back-coat layer comprising a hydrophilic polymeric binder and a pigment, to enhance the writing property, typewriting property and antistatic property of the back surface of the resultant photographic paper sheet.
  • Example 1 a substrate sheet consisting of a paper sheet having a weight of 170 g/m2 was activated by a corona discharge treatment and then coated on the front surface thereof, on which a photographic emulsion layer was to be formed, with a resin composition consisting of 64 parts by weight of a low density polyethylene resin having a density of 0.92, 25 parts by weight of high-density polyethylene having a density of 0.96, 10 parts by weight of anatase type titanium dioxide powder, and 1 part by weight of an additive comprising a pigment and an antioxidant, by a melt-extrusion laminating method, to form a front surface coating layer having a thickness of 30 ⁇ m.
  • a resin composition consisting of 64 parts by weight of a low density polyethylene resin having a density of 0.92, 25 parts by weight of high-density polyethylene having a density of 0.96, 10 parts by weight of anatase type titanium dioxide powder, and 1 part by weight of an additive comprising a pigment and an antioxidant, by
  • the back surface of the substrate sheet was activated by a corona discharge treatment and then coated, by the same method as mentioned above, with a resin composition consisting of 50 parts by weight of low-density polyethylene having a density of 0.92 and 50 parts by weight of high-density polyethylene having a density of 0.96, to form a back surface coating layer having a thickness of 30 ⁇ m.
  • a cooling roller having a roughened surface on which many hemispherical convexities having an average diameter of 13 ⁇ m were formed was used and thus, on the roughened surface of the back surface coating layer formed by using this cooling roll, many fine crater-shaped concavities adjoining one another through ridgeline-­shaped convexities were formed.
  • the average diameter of the craters was 13 ⁇ m
  • the 10-point average roughness of the roughened surface of the back surface coating layer was 6.0 ⁇ m.
  • the front surface coating layer on the substrate sheet was activated by a corona discharge treatment and then coated with a gelatin solution containing a curing agent, instead of a photographic emulsion, and dried to form a gelatine layer having a thickness of 80 ⁇ m after drying.
  • the resultant gelatin layer-coated substrate sheet was slittered and rolled at a width of 10 cm, and continuously fed from the roll into a cutter of a color printer at the forwarding speed as shown in Table 1. After 200 meters of the sheet had passed through the cutter, it was determined whether or not white deposits were produced on the peripheral surfaces of fixed guides in the cutter.
  • Comparative Example 1 the same procedures as in Example were carried out except that the peripheral surface of the cooling roller had a number of groove-­shaped concavities spaced from each other, and exhibited a ten point average surface roughness (R Z ) of 8.4 ⁇ m, and the resultant back surface coating layer had an irregular mountain-valley type roughened surface.
  • Table 1 Item Formation of white deposits Forwarding speed (m/min) Example No. Roughened surface pattern of back surface coating layer 20 40 60 80 Example 1 Crater-ridgeline type None None None None Comparative Example 1 Irregular mountain-valley type (*)1 Slight (*)1 Slight (*)2 Remarkable (*)2 Remarkable Note: (*)1 ... A certain amount of white deposits was formed, but no cleaning operation for the guide members was necessary. (*)2 ... A large amount of white deposits was found, and cleaning of the guide members was necessary.
  • Table 1 clearly shows that the specific roughened surface of the back surface coating layer of the present invention effectively prevents or restricts the production of the white deposits in the automatic developing machine, even at a very high speed of 80 m/min.
  • a paper sheet having a weight of 170 g/m2 was used as a substrate sheet.
  • a front surface on which a photographic emulsion was to be coated, and a back surface opposite to the front surface, of the substrate sheet were activated by a corona discharge treatment.
  • Example 2 the resultant roughened surface patterns were of the crater-ridgeline type.
  • the front surface coating layer had a low gloss face having an R Z of 5.2 ⁇ m, in Example 2 a fine grained face having an R Z of 7.5 ⁇ m in Example 3, and a silk-like roughened face having an R Z of 13.4 ⁇ m in Example 4.
  • the resultant roughened surface patterns were of the mountain-valley type.
  • the front surface coating layer had a low gloss face having an R Z of 6.5 ⁇ m in Comparative Example 2, a fine grained face having an R Z of 7.1 ⁇ m in Comparative Example 3, and a silk-like roughened face having an R Z of 16.3 ⁇ m in Comparative Example 4.
  • Each of the resultant front surface coating layers was activated by a corona discharge treatment and a photographic emulsion was applied to the activated surface of the front surface coating layer, at the coating speeds as indicated in Table 2.
  • Table 2 Item Back surface coating layer Photographic emulsion layer Coating speed (m/min) R z Glossness
  • Example No. Type Roughened surface pattern 100 120 140 180 1 ⁇ m (%)
  • Example 2 Low gloss Crater-ridgeline (*) Good Good Good Good Good 5.2 75.0 Comparative Example 2 " Mountain-valley Not good Bad Bad Bad 6.5 72.5
  • Example 3 Fine grained Crater-ridgeline Good Good Good Good 7.5 63.2 Comparative Example 3 " Mountain-valley Not good Bad Bad Bad 7.1 65.7
  • Example 4 Silk-like roughened Crater-ridgeline Good Good Good Good Good Good Good Good Good Good Good Good Good Good Good Good Good Good Good Good Good Good 13.4 38.5 Comparative Example 4 " Mountain-valley Not good Bad Bad Bad 16.3 33.5 Note: Good ....
  • Table 2 clearly shows that the specific roughened surfaces of the front surface coating layers are effective for enabling an even, smooth coating of the photographic emulsion thereon.

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  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • General Physics & Mathematics (AREA)
  • Paper (AREA)
  • Ink Jet Recording Methods And Recording Media Thereof (AREA)
  • Laminated Bodies (AREA)
EP19890312311 1988-12-09 1989-11-28 Trägerblatt für photographische Abzüge Expired - Lifetime EP0372783B1 (de)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP31010388A JPH02157746A (ja) 1988-12-09 1988-12-09 写真印画紙用支持体
JP310103/88 1988-12-09
JP2760989A JPH02208649A (ja) 1989-02-08 1989-02-08 写真印画紙用支持体
JP27609/89 1989-02-08

Publications (2)

Publication Number Publication Date
EP0372783A1 true EP0372783A1 (de) 1990-06-13
EP0372783B1 EP0372783B1 (de) 1995-08-30

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP19890312311 Expired - Lifetime EP0372783B1 (de) 1988-12-09 1989-11-28 Trägerblatt für photographische Abzüge

Country Status (2)

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EP (1) EP0372783B1 (de)
DE (1) DE68924046T2 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19812445A1 (de) * 1998-03-21 1999-11-25 Schoeller Felix Jun Foto Trägermaterial mit niedrigem Pitsniveau
DE10115040B4 (de) * 2000-03-28 2006-02-23 Mitsubishi Paper Mills Limited Tintenstrahl-Aufzeichnungsmaterial

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3300286A (en) * 1964-07-10 1967-01-24 Mirror Polishing And Plating C Composite metallic roll or other member and method of making same
GB1466030A (en) * 1974-06-26 1977-03-02 Fuji Photo Film Co Ltd Method for the production of a coated patterned paper support for incorparation in a photographic paper

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3300286A (en) * 1964-07-10 1967-01-24 Mirror Polishing And Plating C Composite metallic roll or other member and method of making same
GB1466030A (en) * 1974-06-26 1977-03-02 Fuji Photo Film Co Ltd Method for the production of a coated patterned paper support for incorparation in a photographic paper

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN, vol 10, no 97 (P-446)[2154] 15 April 1986; & JP-A-60 230 137 (MITSUBISHI SEISHI KK) 15 November 1985 *
RESEARCH DISCLOSURE no 163, November 1977, page 78, abstract no. 16386, Industrial Opportunities, Havant, Hampshire; "Textured photographic resin coated papers" *
RESEARCH DISCLOSURE, no 197, September 1980, page 385, abstract no 19745, Industrial opportunities, Havant, Hampshire; "Textured resin coated photographic papers" *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19812445A1 (de) * 1998-03-21 1999-11-25 Schoeller Felix Jun Foto Trägermaterial mit niedrigem Pitsniveau
DE19812445C2 (de) * 1998-03-21 2000-12-07 Schoeller Felix Jun Foto Trägermaterial mit niedrigem Pitsniveau
DE10115040B4 (de) * 2000-03-28 2006-02-23 Mitsubishi Paper Mills Limited Tintenstrahl-Aufzeichnungsmaterial

Also Published As

Publication number Publication date
DE68924046D1 (de) 1995-10-05
DE68924046T2 (de) 1996-05-09
EP0372783B1 (de) 1995-08-30

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