WO1999063403A1 - Light shielding cloth for photographic film cartridge and photographic film cartridge - Google Patents
Light shielding cloth for photographic film cartridge and photographic film cartridge Download PDFInfo
- Publication number
- WO1999063403A1 WO1999063403A1 PCT/JP1999/002903 JP9902903W WO9963403A1 WO 1999063403 A1 WO1999063403 A1 WO 1999063403A1 JP 9902903 W JP9902903 W JP 9902903W WO 9963403 A1 WO9963403 A1 WO 9963403A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- cloth
- photographic film
- cloth piece
- light
- shielding
- 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.)
- Ceased
Links
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
- G03C3/00—Packages of films for inserting into cameras, e.g. roll-films, film-packs; Wrapping materials for light-sensitive plates, films or papers, e.g. materials characterised by the use of special dyes, printing inks, adhesives
Definitions
- the present invention relates to a light-shielding cloth (terem) attached to a slit for drawing out a film of a photographic film cartridge, and a photographic film cartridge using the telem.
- a light-shielding cloth inside the photographic film cartridge's film drawer slot (also called a port) is used to prevent exposure of the photographic film in the photographic film by contact with the photographic film.
- Fig. 1 shows a cross section of a general photographic film cartridge.
- the photographic film cartridge 10 is a light-shielding container 11 provided with a photographic film take-out slit 14 in which photographic film 13 is wound around a spool 12 and provided with a photographic film take-out slit 1.
- Telemumps 20a and 2Ob are stuck on the upper and lower inner sides of 4, respectively.
- telemps 20a and 2Ob have excellent light-shielding properties, have flexibility so that the photographic film is not damaged when the film is pulled out, and furthermore, the photographic film can be easily pulled out. It is desired that the photographic film has low withdrawal resistance.
- recently developed APS-type photographic film cartridges do not use telemping.
- Conventional telemps are formed by weaving or knitting piled woven or knitted fabric with pile yarn to form a two-ply woven or knitted fabric. It is manufactured by cutting pile yarns along the fabric surface (see Japanese Utility Model Publication No. 37-218388 and Japanese Utility Model Application Publication No. 61-34526). Telemping manufactured by these methods shields light when the pile yarn comes into contact with the photographic film, has sufficient flexibility, and withstands the draw-out resistance of the photographic film enough for normal use. Things.
- woven or knitted fabric The process of weaving or knitting with filament yarns is low in productivity, which makes these terrains expensive in terms of cost. -On the other hand, Japanese Patent Application Laid-Open No.
- a telemping in which a woven fabric is subjected to a brushing treatment and the raised surface thereof is shirred (a process of trimming the fluff).
- Japanese Patent Application Laid-Open No. 8-158825 proposes a telemp in which a weft is inserted into a warp-knitted knitted fabric and the weft is raised. These telemps are used to shield light when the raised fibers come into contact with the photographic film. In general, brushing is more productive than weaving or knitting pile yarn into fabric, and these telemps are less expensive.
- the effect of improving the light blocking effect by raising the brush may be reduced by shearing the above-mentioned telemp.
- a photographic film cartridge using telempe which has a low effect of improving light-shielding properties, light penetrates from a slit portion and the photographic film is easily exposed.
- brush density the number of brushes per unit of telemping
- the pull-out resistance may be high, making it difficult to pull out the photographic film.
- Japanese Patent Application Laid-Open No. 9-11216 proposes a telemp as shown in FIG.
- the telem 20 is made of a nap-raised woven fabric, a nap-raised knitted fabric or a non-woven fabric 22 having a length of the nap portion 21 shown in the figure (D is 0.5 mm to 1.5 mm. It is said that in photographic film cartridges using photographic film, the resistance to pulling out the photographic film does not increase, and the improvement in light-shielding properties due to the raising of telemps is ensured.
- the fiber lump generated by the napping treatment and the shearing may remain on the surface of the telemping, and may remain on the surface of the telping. Waste fibers move to the photosensitive surface of the photographic film when the photographic film is pulled out of the photographic film cartridge, or move to the photographic film cartridge production line when the photographic film cartridge is manufactured. And adhere to the photosensitive surface of the photographic film again Turned out to be a problem. Photographic images obtained by photographing and developing with a photographic film in which fiber scraps adhere to the photosensitive surface are more likely to have defects.
- an object of the present invention is to provide a telephoto lens which is attached to a film drawing slot of a photographic film cartridge in which defects are less likely to occur in a photographic image, in particular, defects are less noticeable in an enlarged photographic image.
- Still another object of the present invention is to provide a photographic film cartridge in which a defect is less likely to occur in a photographic image, and in particular, a defect is less noticeable in an enlarged photographic image.
- the present invention relates to a light-shielding cloth (terem) attached to a slit for drawing out a film of a photographic film cartridge, wherein the light-shielding cloth (terem) is a cloth that has been subjected to a raising treatment.
- the light-shielding cloth (Teremp) has less than 30 fibers / cm 2 remaining on the surface. More preferably, it is a light-shielding cloth piece in which the amount of fiber waste remaining on the surface is 20 or less per 1 cm 2 . The amount of the remaining fiber waste is a value measured by the following method.
- a pressure-sensitive adhesive tape (what is generally called cellophane tape, for example, SEguchi tape, manufactured by Nichiban Co., Ltd.) to the surface of Teleump.
- the pressure-sensitive adhesive tape and telem are pressure-bonded with a pressure roller having a weight of 2 kg, a width of 45 mm, and a diameter of 95 mm.
- the telemping of the present invention is characterized in that, after the brush piece subjected to the brushing treatment is subjected to a brushing treatment on the long cloth body, the long cloth body is immersed in water to remove dust, and then the dried long cloth body. It is desirable to use a piece of cloth from which the body has been cut. Further, it is preferable that the cloth piece subjected to the raising treatment is a cloth piece obtained by performing a raising treatment by combining a rough raising treatment and a fine raising treatment on a long cloth.
- the brushed cloth piece is a brushed woven cloth piece. Is desirable. If the cloth piece is a woven cloth piece, the weft of the woven cloth piece is a spun yarn (spun yarn) or a twin yarn of a filament yarn (twisted yarns) or a tricot yarn (yarn And the woven cloth pieces are preferably made of polyester fiber or polyamide fiber as a main component.
- the present invention provides a light-shielding cloth piece as a light-shielding cloth piece, which has been subjected to a raising treatment, wherein the amount of fiber waste remaining on the surface of the cloth piece is 30 or less per 1 cm 2. Is in the photographic film cartridge provided in the slit for drawing out the film.
- FIG. 1 is a sectional view of an example of a typical photographic film cartridge.
- FIG. 2 is an enlarged cross-sectional view of an example of a conventional telemp.
- FIG. 3 is an enlarged cross-sectional view of an example of the telemp of the present invention.
- FIG. 3 shows a cross section of an example of the telep of the present invention.
- Telemp 20 is a long body of cloth (hereinafter referred to as “base cloth”) 32, raised part 31 formed by raising base cloth 32 2, photo adhesive 3 for bonding to slit of film cartridge 3 4.
- An undercoating agent hereinafter referred to as a filler to prevent the adhesive from seeping into the base fabric.
- the thickness of the telemp is preferably in the range of 0.5-2.5 mm, more preferably in the range of 1.2-2.0 mm.
- the thickness of the hair raising portion 3 1 (FIG. 3 in D 4) is 0.1 to 1.7 in the range of mm is desirable from the viewpoint of the drawing resistance of the photograph film.
- the raised portion may be subjected to shirring, but is preferably not performed.
- the base cloth 32 may be either a knitted cloth or a woven cloth.
- the warp is desirably a filament yarn
- the weft is desirably a spun yarn or a twin yarn or a triple yarn of a filament yarn. Desirably, it is yarn.
- the woven cloth is 3-5 sheets of satin or 1 3 4 It is desirable to use four or five sheets of red silk.
- the raised portion 31 and the base cloth 32 have a light-shielding property and a low chargeability.
- the base fabric is colored, and the color and coloring method are not particularly limited. In particular, black has a wide light absorption wavelength range and is effective in improving light-shielding properties.
- the coloring method the base fabric may be dyed, or the colored fabric may be woven or knitted to form the base fabric.
- the base fabric is made by adding a conductive material or an antistatic agent or coating the surface thereof.
- a conductive material is carbon black. Since carbon black is black, it is advantageous from the viewpoint of light-shielding properties.
- the filling material 33 is not particularly limited in its material, but is preferably a material having an affinity for both the base cloth 32 and the adhesive 34.
- Typical examples include natural rubber, casein, polybutyl alcohol and its derivatives, polyatarylamide, butyl methyl ether-maleic anhydride copolymer, and phenol resin.
- the adhesive 34 may be either a pressure-sensitive adhesive or a hot-melt (heat-sensitive) adhesive, and its components are not particularly limited.
- pressure-sensitive adhesives include rubber adhesives, acrylic adhesives, and butyl methyl ether-maleic anhydride copolymer.
- hot melt adhesives include ethylene-vinyl acetate copolymer and polyamide. And the like.
- a filling adhesive having both a filling agent and an adhesive may be used without using the filling agent 33.
- the telemp of the present invention can be produced, for example, by the following method. First, one surface of a long woven or knitted fabric is subjected to a raising treatment. Next, immerse in water, remove dust, and dry. Then, a filler is applied and dried on the other side of the raised surface, and an adhesive is applied and dried. The brushed fabric long body thus obtained is cut into a predetermined size.
- pre-heat set When dyeing a long cloth and then applying a brushing treatment to the long cloth, 9 / It is desirable that the long fabric is dyed after heat treatment (hereinafter referred to as pre-heat set) so that it does not easily shrink in the width direction.
- the preheat setting is performed, for example, by blowing hot air at 180 ° C onto the long cloth.
- the heat treatment spraying with hot air
- the brush raising process is a commonly used method, that is, a needle having a needle-like projection while transporting a long cloth body in the length direction, and rotating in a direction opposite to the transport direction of the long cloth body. This is done by contacting (rubbing) with a cloth roller.
- the raising process it is preferable to first apply a rough raising process to the long fabric, and then to perform a fine raising process. After the fine raising process, the rough raising process may be further performed.
- the rough brushing treatment refers to rough raising (lower density of brushing) a long cloth so that the length of the hair to be fluffed by the raising becomes longer, and fine raising refers to a long cloth.
- Raising the brush finely means raising the fabric, for example, the transport speed of the long cloth, the rotation speed of the roller, the length and number of the needle-shaped protrusions, and the distance between the long cloth and the needle roller. It can be adjusted by changing the contact torque.
- the elongate cloth that has been subjected to the raising treatment may be raised in a direction opposite to the direction in which the raising treatment is performed in order to further enhance the effect of raising the cloth.
- the number of times of the raising process is not particularly limited, but by performing the process repeatedly, the number of the raising can be increased and the raising density of the raised fiber can be increased, so that the effect of the raising can be improved.
- the immersion treatment in water is performed by immersing the brushed long fabric in water with the raised surface facing upward.
- the water may be hot water.
- the fiber waste adhering to the surface of the cloth by this immersion treatment rises in water or hot water.
- immersion time There is no particular limitation on the immersion time, but immersion for 3 seconds or more is desirable.
- the long fabric After completion of the immersion treatment, pull up the long fabric so that the fiber waste floating in water or warm water does not adhere to the long fabric, and blow it with hot air at 100 to 200 ° C. And dry.
- the temperature of the hot air is preferably from 120 to 130 ° C.
- heat-treating spraying hot air
- the long cloth is pulled in the width direction to correct the bulging of the weft, and its width is set to be 1 width smaller than the width before heat treatment. It is preferable to increase the width by about 5% (hereinafter referred to as width dimension adjustment heat set).
- width dimension adjustment heat set After further drying, the thickness of the cloth may be adjusted by pressing the long cloth with a roller or the like.
- the temperature of the surface of the calendar roller is 30 to 150 °.
- a range of C is desirable, more preferably, a range of 90 to 120 ° C, or a range of 40 to 80 ° C. If the temperature of the surface of the calendar roller is too high, the raised portion of the telemump becomes hard, which may reduce the effect of raising and may damage the photographic film. On the other hand, if the temperature of the surface of the force render roller is too low, the effect of adjusting the cloth thickness is reduced.
- the telemp of the present invention has a small amount of fiber waste remaining on the surface. Also, the photographic film surface of the photographic film cartridge using this lamp has a small amount of fiber waste. Therefore, the photographic film cartridge using the telempe of the present invention hardly causes defects in a photographic image, and in particular, hardly causes defects in an enlarged photographic image. In addition, since the fabric of the present invention is manufactured by raising the cloth, the productivity is high and the cost is advantageous.
- Two hundred and ten denier 34 black colored polyamide yarns are drawn and entangled with air to form a warp yarn.
- Five strands of polyamide fiber were used for the weft, and weft satin weave was used.
- the base cloth was a woven cloth woven to a weave density of 68 x 70 inches.
- One surface of the woven fabric was subjected to a rough raising process, a fine raising process, and a rough raising process with a raising machine in this order.
- the brushed woven fabric was immersed in water for 7 seconds and then dried by blowing hot air at 180 ° C to remove dust on the surface.
- the sheet was passed through a calendar roller having a slit width of 1.5 mm and a surface temperature adjusted to 100 ° C. to adjust the thickness.
- acrylic is used as a sealant on the brushed opposite side of the woven fabric. After uniformly applying and drying the system resin to 40 gZm 2 , an acrylic adhesive was applied and dried to 70 gZm 2 to prepare telemp.
- the woven fabric was woven to a density of 70 X latitude 73 inches and then dyed black. After dyeing this woven fabric black, on one side
- a brush raising treatment was performed in the same manner as in Example 1, an immersion treatment and drying were performed, and the thickness was adjusted. Next, after uniformly applying and drying such that the vinyl acetate resin to 40 g / m 2 on the opposite of the raising treatment of a woven fabric as a sealer, the hot-melt adhesive 80 g / m 2 It was coated and dried to prepare a telemump.
- 75 denier 36 filament polyester fiber yarn for warp yarn and 20/1 (cotton count) polyester spun yarn of two twisted yarns are used for weft yarn.
- a 65-inch woven fabric was used as a base fabric.
- the woven fabric was preheat-set by blowing hot air at 180 ° C for 30 seconds, and then dyed black. After that, rough brushing and fine brushing are performed using a brushing machine so that the thickness (cloth thickness) of the woven fabric surface (wet satin pattern surface) plus the raised portion and the base fabric portion is 1.6 mm. Repeated.
- the brushed woven fabric was immersed in water for 5 seconds, and then dried by blowing hot air at 120 ° C.
- the brushed woven fabric was pulled in the width direction and its width was widened by about 1%, and the width was adjusted and heat set.
- the vinyl acetate ⁇ to 40 gZm 2 as sealer on the opposite surface which is brushed treated woven, comprising a hot-melt adhesive 70 g / m 2 was applied and dried as described above to prepare telemps.
- Twisted polyamide fiber yarn of 210 denier // 34 filament polyamide fiber yarn of warp and black colored 2 denier X 51 mm cotton spun into a 201 1 (cotton count) polyamide fiber yarn was used as the weft yarn, and a woven cloth woven to a weft satin of 5 sheets and a weaving density of 62 X latitude 62 inches was used.
- the surface of this woven fabric As in Example 3, the brushed surface was brushed so that the cloth thickness became 1.6 mm, immersed, and dried. During the drying, the brushed woven fabric was pulled in the width direction and its width was increased by about 1%, and the width was adjusted and heat set.
- the hot-melt adhesive 7 0 g / It was coated and dried so as to obtain m 2 , thereby preparing a telemp.
- the brushed woven fabric was pulled in the width direction and its width was widened by about 1%, and the width was adjusted and heat set.
- the hot-melt adhesive 7 0 g Zm 2 It was coated and dried as needed to prepare a telep.
- a telemp was prepared in the same manner as in Example 1 except that dust removal was not performed on the surface of the woven fabric subjected to the raising treatment.
- Example 2 After performing the raising treatment, the same procedure as in Example 1 was carried out except that the dusting was not performed on the surface of the woven fabric subjected to the raising treatment.
- Photo film 13 includes color negative photographic film (Fujicolor SUPER G ACE 400 manufactured by Fuji Photo Film Co., Ltd.).
- the amount of fiber lint on the surface of the raised surface of each of the obtained telemps was measured by the above-described method.
- Table 1 shows the results.
- the pull-out resistance of the photographic film (1), the light-shielding property (2), the amount of fiber waste (3), and the photographic image (4) are as follows. Evaluation was made according to the method, and the quality was judged.
- Table 2 shows the results.
- AA is in a state of being excellent
- BB is in a state where it can be used without practical problems
- CC is in a practical limit, but problems may occur, and it is desirable to improve.
- the pull-out resistance of the photographic film was measured by measuring the load when the photographic film was pulled out using an Instron tensile tester.
- the light-shielding properties were as follows. After exposing the slit portion to light under an illuminance of 90,000 lux for 30 minutes, the photographic film was developed, and the capri due to light leakage of the photographic image was visually observed.
- the amount of fiber waste is determined by shaking the photographic film cartridge for 10 minutes using a vibration test, disassembling the photographic film cartridge, and removing the fiber waste adhering to the inside of the light-shielding container and the surface of the photographic film. It was visually observed.
- Example 5 1 9 Comparative Example 35 Comparative Example 2 40 Table 2 Light-shielding property of photographic film Fiber waste Photo image Pull-out resistance
- Example 1 AA AA AA AA
- Example 2 AA AA AA
- Example 3 AA AA AA
- Example 4 AA AA AA
- Example 5 AA AA AA
- Comparative Example 1 AA BBBB Comparative Example 2 CC BB CC BB
- the brushed woven fabric was pulled in the width direction and its width was widened by about 1%, and the width was adjusted and heat set.
- the acetate Bulle based resin 40 gZm 2 as sealer on the opposite of the raising treatment of the fabric applied so that the hot-melt adhesive 70 gZm 2
- the amount of lint on the brushed surface of the dried telem was measured.
- the amount of existing fiber litter was 30 or less per cm 2 .
Landscapes
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Woven Fabrics (AREA)
- Treatment Of Fiber Materials (AREA)
Description
Claims
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US09/701,784 US6659381B1 (en) | 1998-06-02 | 1999-06-01 | Light-shielding cloth for photographic film cartridge and photographic film cartridge |
| EP99922610A EP1089123B1 (en) | 1998-06-02 | 1999-06-01 | Light shielding cloth for photographic film cartridge and photographic film cartridge |
| DE69939215T DE69939215D1 (de) | 1998-06-02 | 1999-06-01 | Lichtundurchlässiges gewebe für photographische filmpatronen und photographische filmpatrone |
| AU39583/99A AU3958399A (en) | 1998-06-02 | 1999-06-01 | Light shielding cloth for photographic film cartridge and photographic film cartridge |
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10/169319 | 1998-06-02 | ||
| JP16931998 | 1998-06-02 | ||
| JP34111598 | 1998-11-13 | ||
| JP10/341115 | 1998-11-13 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO1999063403A1 true WO1999063403A1 (en) | 1999-12-09 |
Family
ID=26492694
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP1999/002903 Ceased WO1999063403A1 (en) | 1998-06-02 | 1999-06-01 | Light shielding cloth for photographic film cartridge and photographic film cartridge |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US6659381B1 (ja) |
| EP (1) | EP1089123B1 (ja) |
| AU (1) | AU3958399A (ja) |
| DE (1) | DE69939215D1 (ja) |
| WO (1) | WO1999063403A1 (ja) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6257255U (ja) * | 1985-09-30 | 1987-04-09 | ||
| JPH01254952A (ja) * | 1988-04-05 | 1989-10-11 | Konica Corp | パトローネ用テレンプの製造方法 |
| JPH06295025A (ja) * | 1993-04-08 | 1994-10-21 | Fuji Photo Film Co Ltd | 細幅状遮光部材の洗浄方法 |
| JPH09120116A (ja) * | 1995-10-26 | 1997-05-06 | Fuji Photo Film Co Ltd | 写真フイルムカートリッジ |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3678658D1 (de) * | 1985-09-19 | 1991-05-16 | Fuji Photo Film Co Ltd | Behaelter fuer eine rolle lichtempfindlichen materials. |
| US5275283A (en) * | 1986-08-19 | 1994-01-04 | Fuji Photo Film Co., Ltd. | Container for light-sensitive strip materials having improved light sealing means |
| DE69121278T2 (de) * | 1990-04-19 | 1997-01-09 | Fuji Photo Film Co Ltd | Struktur eines lichtabschirmenden Stoffes und mit diesem Stoff versehener Behälter |
| US5358198A (en) * | 1992-07-06 | 1994-10-25 | Milliken Research Corporation | Teremp fabric |
-
1999
- 1999-06-01 EP EP99922610A patent/EP1089123B1/en not_active Expired - Lifetime
- 1999-06-01 AU AU39583/99A patent/AU3958399A/en not_active Abandoned
- 1999-06-01 US US09/701,784 patent/US6659381B1/en not_active Expired - Fee Related
- 1999-06-01 WO PCT/JP1999/002903 patent/WO1999063403A1/ja not_active Ceased
- 1999-06-01 DE DE69939215T patent/DE69939215D1/de not_active Expired - Lifetime
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6257255U (ja) * | 1985-09-30 | 1987-04-09 | ||
| JPH01254952A (ja) * | 1988-04-05 | 1989-10-11 | Konica Corp | パトローネ用テレンプの製造方法 |
| JPH06295025A (ja) * | 1993-04-08 | 1994-10-21 | Fuji Photo Film Co Ltd | 細幅状遮光部材の洗浄方法 |
| JPH09120116A (ja) * | 1995-10-26 | 1997-05-06 | Fuji Photo Film Co Ltd | 写真フイルムカートリッジ |
Non-Patent Citations (1)
| Title |
|---|
| See also references of EP1089123A4 * |
Also Published As
| Publication number | Publication date |
|---|---|
| DE69939215D1 (de) | 2008-09-11 |
| EP1089123B1 (en) | 2008-07-30 |
| EP1089123A1 (en) | 2001-04-04 |
| US6659381B1 (en) | 2003-12-09 |
| AU3958399A (en) | 1999-12-20 |
| EP1089123A4 (en) | 2003-02-05 |
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