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WO2002017012A2 - Appareil et procede de pre-exposition d'une bordure sur un film photosensible - Google Patents

Appareil et procede de pre-exposition d'une bordure sur un film photosensible Download PDF

Info

Publication number
WO2002017012A2
WO2002017012A2 PCT/US2001/041779 US0141779W WO0217012A2 WO 2002017012 A2 WO2002017012 A2 WO 2002017012A2 US 0141779 W US0141779 W US 0141779W WO 0217012 A2 WO0217012 A2 WO 0217012A2
Authority
WO
WIPO (PCT)
Prior art keywords
outer shell
web
photosensitive film
strips
transparent
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
Application number
PCT/US2001/041779
Other languages
English (en)
Other versions
WO2002017012A3 (fr
Inventor
Jon D. Lauver
Douglas J. Buschor
David T. Ohmer
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.)
Cycolor Inc
Original Assignee
Cycolor Inc
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
Application filed by Cycolor Inc filed Critical Cycolor Inc
Priority to AU9321001A priority Critical patent/AU9321001A/xx
Publication of WO2002017012A2 publication Critical patent/WO2002017012A2/fr
Publication of WO2002017012A3 publication Critical patent/WO2002017012A3/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B17/00—Details of cameras or camera bodies; Accessories therefor
    • G03B17/24—Details of cameras or camera bodies; Accessories therefor with means for separately producing marks on the film, e.g. title, time of exposure
    • G03B17/245—Optical means

Definitions

  • the present invention relates generally to photosensitive film, and more particularly to apparatus and methods for pre-exposing a border adjacent an imaging area on a web of photosensitive film.
  • photosensitive film first as a continuously-moving web having a row-and-column array of spaced-apart imaging areas, wherein the space or border between the imaging areas is not intended to be imaged. Later in the film manufacturing process, the moving web typically is cut into ribbons using slitters, with each ribbon containing a single column of spaced-apart imaging areas, and wherein the space between the column and each side edge of the ribbon and the space between adjacent imaging areas are not intended to be imaged.
  • a ribbon of film is sold as a roll of film for those cameras requiring film to be supplied in rolls.
  • the film manufacturing process optionally additionally cuts a moving ribbon into sheets using crosscut knives, with each sheet containing a single imaging area surrounded by a border, wherein the border is not intended to be imaged. Sheets of film are sold in a cartridge for those cameras requiring such film. In the case of digital images from digital sources (such as from digital cameras), the photosensitive film is used by a printer to turn the digital image into a photographic image.
  • a conventional technique for pre-exposing borders surrounding imaging areas stops the previously-described moving web each time a row of imaging areas is brought into alignment beneath a box containing a light source.
  • the light source is an array of incandescent bulbs.
  • the rectangular-shaped bottom of the box has open areas and opaque mask areas.
  • the mask areas protect the imaging areas in the aligned row from exposure by the light source.
  • the open areas expose the along-web borders of the imaging areas in the aligned row and expose the cross-web border between the imaging areas in the aligned row and the imaging areas of the next-to-be-aligned row.
  • a picture is obtained from a digital source or from a film-using camera.
  • a photographic image is created by a film-using printer for a picture obtained from a digital source or by developing the film of a picture taken by a film-using camera.
  • the pre-exposed borders turn out as desirable white (or other color depending on the light source) borders surrounding the photographic image.
  • stopping the moving web to pre-expose the borders of each row of imaging areas slows down the film manufacturing process.
  • a first expression of a preferred embodiment of the invention is for a drum for pre-exposing along-web borders adjacent columns of a row-and-column array of spaced- apart imaging areas on an unexposed web of photosensitive film
  • the drum includes a rotatable first outer shell and a first source of actinic radiation located within the first outer shell.
  • the first outer shell includes coaxially-aligned, longitudinally-adjacent, and alternating opaque rings and transparent rings.
  • the opaque rings have a width matching the width of the corresponding imaging areas
  • the transparent rings have a width matching the width of the corresponding along-web borders.
  • a second expression of a preferred embodiment of the invention is for a system for pre-exposing along-web borders adjacent columns of a row-and-column array of spaced-apart imaging areas on an unexposed web of photosensitive film.
  • the system includes a first drum identical to the drum described in the previous paragraph and also includes a mechanism for moving the web of photosensitive film.
  • the web-moving mechanism is positioned so that the web of photosensitive film contacts the first outer shell with the imaging areas aligned with the opaque rings and with the along-web borders aligned with the transparent rings.
  • a third expression of a preferred embodiment of the invention is for a drum for pre-exposing cross-web borders adjacent rows of a row-and-column array of spaced of spaced-apart imaging areas on an unexposed web of photosensitive film.
  • the drum includes a rotatable second outer shell and a second source of actinic radiation located within the second outer shell.
  • the second outer shell includes longitudinally-extending, circumferentially-adjacent, and alternating opaque strips and transparent strips.
  • the opaque strips have a height matching the height of the corresponding imaging areas, and the transparent strips have a height matching the height of the corresponding cross-web borders.
  • a fourth expression of a preferred embodiment of the invention is for a system for pre-exposing cross-web borders adjacent rows of a row-and-column array of spaced-apart imaging areas on an unexposed web of photosensitive film.
  • the system includes a second drum identical to the drum described in the previous paragraph and also includes a mechanism for moving the web of photosensitive film.
  • the web-moving mechanism is positioned so that the web of photosensitive film contacts the second outer shell with the pre-exposed imaging areas aligned with the opaque strips and with the cross-web borders aligned with the transparent strips.
  • a first method of the invention is for pre-exposing along-web borders adjacent columns of a row-and-column array of spaced-apart imaging areas on an unexposed web of photosensitive film.
  • the method includes several steps.
  • a first drum is obtained having a first outer shell rotatable about a longitudinal axis and having a first source of actmic radiation located within the first outer shell.
  • the first outer shell has coaxially-aligned, longitudinally-adjacent, and alternating opaque rings and transparent rings which circumferentially surround the first source of actinic radiation.
  • the web of photosensitive film is partially-circumferentially positioned on the first outer shell so that, when the web of photosensitive film moves and the first outer shell rotates, each column of imaging areas is aligned over a corresponding one of the opaque rings and each along-web border is aligned over a corresponding one of the transparent rings. Then, the web of photosensitive film is moved, and the first outer shell is rotated.
  • a second method of the invention is for pre-exposing cross-web borders adjacent rows of a row-and-column array of spaced-apart imaging areas on an unexposed web of photosensitive film and includes several steps.
  • a second drum is obtained having a second outer shell rotatable about a rotational axis and having a second source of actinic radiation located within the second outer shell.
  • the second outer shell has circumferentially-adjacent and alternating opaque strips and transparent strips which are positioned radially outward rom the second source of actinic radiation and which extend parallel to the rotational axis.
  • the web of photosensitive film is partially- circumferentially positioned on the second outer shell so that, when the web of photosensitive film moves and the second outer shell rotates, each row of imaging areas is aligned over a respective one of the opaque strips and each cross-web border is aligned over a respective one of the transparent strips. Then, the web of photosensitive film is moved, and the second outer shell is rotated.
  • Using either or both of the drums of the invention allows pre-exposure of corresponding borders of imaging areas on an unexposed web of photosensitive film while the film is moving at a normal speed during the film manufacturing process. This increases productivity over conventional techniques which stopped the moving film each time the borders associated with a row of imaging areas were pre-exposed.
  • Positioning the moving film on either or both of the rotating drums during pre-exposing creates a light-seal, which increases the sharpness between the photographic image and the border, over conventional techniques which need a space between a stop-and-go film positioned underneath a box containing a light source.
  • Figure 1 is a schematic side-elevational view of a preferred embodiment of the invention
  • Figure 2 is a view taken along lines 2-2 in Figure 1, wherein the film has been cut and laid flat to better illustrate the movement of the film over the first and second drums;
  • Figure 3 is a cross-sectional view of the first drum, wherein the longitudinal axis of the rotatable first outer shell of the first drum lies in the cutting plane;
  • Figure 4 is a view taken along lines 4-4 in Figure 3, wherein structure, other than the shaft and the fluorescent light bulbs, has been omitted for clarity to better show the alignment of the fluorescent light bulbs about the shaft;
  • Figure 5 is a cross-sectional view of the second drum, wherein the rotational axis of the rotatable second outer shell of the second drum lies in the cutting plane.
  • a preferred embodiment of the invention is shown in Figures 1 through 5.
  • a first expression of the preferred embodiment of the invention is for a first drum 10 for pre- exposing along-web borders 12 (whose width is indicated by the double-arrow line 12) adjacent columns 14 of a row-and-column array 16 of spaced-apart imaging areas 18 on an unexposed web of photosensitive film 20.
  • the imaging areas 18 are geometric areas of the photographic film which are reserved for creating photographic images and which are shown in dashed-line as rectangular areas in Figure 2.
  • the web of photosensitive film 20 is a web of conventional photohardenable film used by a printer to produce a photographic image of a digital-image picture taken by a digital camera.
  • the first drum 10 includes a rotatable first outer shell 22 and a first source of actinic radiation 24 disposed within the first outer shell 22.
  • Actinic radiation includes ultraviolet radiation, infrared radiation, visible light, x-rays, and ion beam irradiation.
  • the first source of actinic radiation 24 is a source of visible light.
  • the first outer shell 22 includes a plurality of coaxially-aligned, longitudinally-adjacent, and alternating opaque rings 26 and transparent rings 28.
  • a plurality of opaque rings and transparent rings is meant at least one opaque ring and at least one transparent ring.
  • the first outer shell 22 includes several opaque rings 26 and several transparent rings 28 as shown in Figure 2.
  • the opaque rings 26 have a width matching that of the corresponding imaging areas 18, and the transparent rings 28 have a width matching that of the corresponding along-web borders 12.
  • the opaque rings may have different widths to match corresponding different- width imaging areas, and the transparent rings may have different widths to match corresponding different- width along-web borders.
  • An opaque ring 26 is a ring which sufficiently blocks transmission of the actinic radiation of the first source of actinic radiation 24 so that unexposed photosensitive film blocked by the ring remains unexposed.
  • a transparent ring 28 is a ring which sufficiently allows transmission of the actinic radiation of the first source of actinic radiation 24 so that unexposed photosensitive film "blocked" by the ring becomes exposed. Examples of transparent rings 28 include, without limitation, a ring of translucent material, a ring which is an empty slot bounded by adjacent opaque rings, and a ring of transparent material.
  • the first drum 10 also includes a nonrotating first shaft 30 and a pair of spaced-apart and nonrotating first hub assemblies 32 attached to the first shaft 30.
  • the first outer shell 22 is rotatably attached (such as with bearings 33) to the first hub assemblies 32, and the first hub assemblies 32 have cooling holes 34.
  • the first source of actinic radiation is a plurality of spaced-apart fluorescent light bulbs 36 attached to the first shaft 30, extending generally parallel to the first shaft (as best seen in Figure 3), and arrayed in a partial circumferential configuration (as best seen in Figure 4).
  • the opaque rings 26 comprise (and preferably consist essentially of, and more preferably consist of) black nylon
  • the transparent rings 28 comprise (and preferably consist essentially of, and more preferably consist of) clear acrylic.
  • adjacent opaque rings overlap portions of the intervening transparent rings.
  • an overlapped portion of a transparent ring is not considered to be part of the transparent ring for purposes of describing the operation of the invention, as can be appreciated by the artisan.
  • the first shaft 30, the first hub assemblies 32, and the first outer shell 22 all rotate together.
  • a second expression of the preferred embodiment of the invention is for a first system 38 for pre-exposing along-web borders 12 adjacent columns 14 of a row-and- column array 16 of spaced-apart imaging areas 18 on an unexposed web of photosensitive film 20.
  • the system includes the previously-described first drum 10 and also includes means 39 for moving the web of photosensitive film, wherein the web-moving means 39 is disposed so that the web of photosensitive film 20 contacts the first outer shell 22 with the imaging areas 18 aligned with the opaque rings 26 and with the along-web borders 12 aligned with the transparent rings 28.
  • the web-moving means 39 includes a powered take-up reel 40 (as shown in Figure 1) for roll-to-roll processing, wherein an end of the web of photosensitive film 20 is attached to the take-up reel 40.
  • Other web- moving means includes pinch or nip rollers (not shown) for roll-to-sheet processing, and the like.
  • the first system 38 includes a film-supply reel as shown in Figure 1. It is noted that unnumbered arrows in Figure 1 indicate the directions of rotation of the take-up reel 40 and the film-supply reel 41 and that unnumbered arrows in Figure 2 indicate the direction of movement of the web of photosensitive film 20.
  • a third expression of the preferred embodiment of the invention is for a second drum 42 for pre-exposing cross-web borders 44 (whose height is indicated by the double- arrow line 44) adjacent rows 46 of a row-and-column array 16 of spaced-apart imaging areas 18 on an unexposed web of photosensitive film 20.
  • the web of photosensitive film 20 is a web of conventional photohardenable film used by a printer to produce a picture (i.e., a photographic image) for a digital image exposure taken by a digital camera. It is noted that five rows 46 of horizontally-aligned imaging areas 18 are shown in Figure 2, with each row showing three imaging areas 18.
  • the second drum 42 includes a rotatable second outer shell 48 and a second source of actinic radiation 50 disposed within the second outer shell 48.
  • the second source of actinic radiation 50 is a source of visible light.
  • the second outer shell 48 includes a plurality of longitudinally-extending, circumferentially-adjacent, and alternating opaque strips 52 and transparent strips 54. By a plurality of opaque strips and transparent strips is meant at least one opaque strip and at least one transparent strip.
  • the second outer shell 48 includes several opaque strips 52 and several transparent strips 54 as shown in Figure 2.
  • the opaque strips 52 have a height matching that of the corresponding imaging areas 18, and the transparent strips 54 have a height matching that of the corresponding cross-web borders 44. Thus, the opaque strips may have different heights to match corresponding different-height imaging areas, and the transparent strips may have different heights to match corresponding different-height cross-web borders.
  • An opaque strip 52 is a strip which sufficiently blocks transmission of the actinic radiation of the second source of actinic radiation 50 so that unexposed photosensitive film blocked by the strip remains unexposed.
  • a transparent strip 54 is a strip which sufficiently allows transmission of the actinic radiation of the second source of actinic radiation 50 so that unexposed photosensitive film "blocked" by the strip becomes exposed.
  • Examples of transparent strips 54 include, without limitation, a strip of translucent material, a strip which is an empty slot bounded by adjacent opaque strips, and a strip of transparent material.
  • the second drum 42 also includes a nonrotating second shaft 56 and a pair of spaced-apart and nonrotating second hub assemblies 58 attached to the second shaft 56.
  • the second outer shell 48 is rotatably attached (such as with bearings 59) to the second hub assemblies 58, and the second hub assemblies 58 have cooling holes 60.
  • the second source of actinic radiation is a plurality of spaced-apart fluorescent light bulbs 62 attached to the second shaft 56, extending generally parallel to the second shaft (as best seen in Figure 5), and arrayed in a partial circumferential configuration (identical to the configuration of the fluorescent light bulbs 36 shown in Figure 4).
  • the opaque strips 52 comprise (and preferably consist essentially of, and more preferably consist of) black nylon
  • the transparent strips 54 comprise (and preferably consist essentially of, and more preferably consist of) clear acrylic.
  • the second shaft 56, the second hub assemblies 58, and the second outer shell 48 all rotate together.
  • a fourth expression of the preferred embodiment of the invention is for a second system 64 for pre-exposing cross-web borders 44 adjacent rows 46 of a row-and-column array 16 of spaced-apart imaging areas 18 on an unexposed web of photosensitive film 20.
  • the system includes the previously-described second drum 42 and the previously- described web-moving means 39, and wherein the web-moving means 39 is disposed so that the web of photosensitive film 20 contacts the second outer shell 48 with the imaging areas 18 aligned with the opaque strips 52 and with the cross-web borders 44 aligned with the transparent strips 54.
  • the previously-described first and second systems 38 and 64 are combined into an overall system 66 as shown in Figures 1 and 2.
  • a first method of the invention is for pre-exposing along-web borders 12 adjacent columns 14 of a row-and-column array 16 of spaced-apart imaging areas 18 on an unexposed web of photosensitive film 20.
  • the method includes steps a) through c).
  • Step a) includes obtaining a first drum 10 having a first outer shell 22 rotatable about a longitudinal axis 68 and having a first source of actinic radiation 24 disposed within the first outer shell 22, wherein the first outer shell 22 has a plurality of coaxially-aligned, longitudinally-adjacent, and alternating opaque rings 26 and transparent rings 28 which circumferentially surround the first source of actinic radiation 24.
  • Step b) includes partially-circumferentially disposing the web of photosensitive film 20 on the first outer shell 22 so that, when the web of photosensitive film 20 moves and the first outer shell 22 rotates, each column 14 of imaging areas 18 is aligned over a corresponding one of the opaque rings 26 and each along-web border 12 is aligned over a corresponding one of the transparent rings 28.
  • Step c) includes moving the web of photosensitive film 20 and rotating the first outer shell 22.
  • the first outer shell 22 is a freely-rotatable first outer shell
  • step c) includes moving the web of photosensitive film 20 so as to rotate the first outer shell 22.
  • a second method of the invention is for pre-exposing cross-web borders 44 adjacent rows 46 of a row-and-column array 16 of spaced-apart imaging areas 18 on an unexposed web of photosensitive film 20.
  • the method includes steps a) through c).
  • Step a) includes obtaining a second drum 42 having a second outer shell 48 rotatable about a rotational axis 70 and having a second source of actinic radiation 50 disposed within the second outer shell 48, wherein the second outer shell 48 has a plurality of circumferentially-adjacent and alternating opaque strips 52 and transparent strips 54 which extend parallel to the rotational axis 70 and which together circumferentially surround the second source of actinic radiation 50.
  • Step b) includes partially- circumferentially disposing the web of photosensitive film 20 on the second outer shell 48 so that, when the web of photosensitive film 20 moves and the second outer shell 48 rotates, each row 46 of imaging areas 18 is aligned over a corresponding one of the opaque strips 52 and each cross-web border 44 is aligned over a corresponding one of the transparent strips 54.
  • Step c) includes moving the web of photosensitive film 20 and rotating the second outer shell 48.
  • the second outer shell 48 is a freely- rotatable second outer shell
  • step c) includes moving the web of photosensitive film 20 so as to rotate the second outer shell 48.
  • Using either or both of the drums of the invention allows pre-exposure of corresponding borders of imaging areas on an unexposed web of photosensitive film while the film is moving at a normal speed during the film manufacturing process. This increases productivity over conventional techniques which stopped the moving film each time the borders associated with a row of imaging areas were pre-exposed.
  • Positioning the moving film on either or both of the rotating drums during pre-exposing creates a light-seal, which increases the sharpness between the photographic image and the border, over conventional techniques which need a space between a stop-and-go film positioned underneath a box containing a light source.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Exposure And Positioning Against Photoresist Photosensitive Materials (AREA)
  • Projection-Type Copiers In General (AREA)

Abstract

L'invention concerne un premier tambour possédant une première source de lumière placée à l'intérieur d'une première enveloppe extérieure rotative comprenant, en alternance, des anneaux opaques et transparents alignés coaxialement et longitudinalement adjacents. Dans un premier procédé on place une bande non exposée de film photosensible sur la première enveloppe extérieure de manière que, lorsque la bande se déplace et que la première enveloppe externe tourne, les zones d'imagerie sur la bande sont alignées sur les anneaux opaques et le long des bordures de celle-ci. Un second tambour possède une seconde source de lumière placée à l'intérieur d'une seconde enveloppe externe rotative qui comprend, en alternance, des bandes opaques et transparentes s'étendant dans le sens de la longueur et circonférentiellement adjacentes. Dans un second procédé, on positionne la bande du film photosensible sur la seconde enveloppe externe en vue de l'alignement des zones d'imagerie sur les bandes opaques et en vue de l'alignement des bordures de membrures transversales adjacentes aux zones d'imagerie sur les bandes transparentes afin de préexposer les bordures des membrures transversales.
PCT/US2001/041779 2000-08-22 2001-08-17 Appareil et procede de pre-exposition d'une bordure sur un film photosensible Ceased WO2002017012A2 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU9321001A AU9321001A (en) 2000-08-22 2001-08-17 Apparatus and method for pre-exposing a border on photosensitive film

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US64326700A 2000-08-22 2000-08-22
US09/643,267 2000-08-22

Publications (2)

Publication Number Publication Date
WO2002017012A2 true WO2002017012A2 (fr) 2002-02-28
WO2002017012A3 WO2002017012A3 (fr) 2002-07-04

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2001/041779 Ceased WO2002017012A2 (fr) 2000-08-22 2001-08-17 Appareil et procede de pre-exposition d'une bordure sur un film photosensible

Country Status (2)

Country Link
AU (1) AU9321001A (fr)
WO (1) WO2002017012A2 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008512139A (ja) * 2004-09-07 2008-04-24 セント ジュード メディカル カーディオロジー ディビジョン インコーポレイテッド 閉鎖装置、閉鎖装置の供給方法、および閉鎖装置の使用方法

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3323434A (en) * 1964-09-24 1967-06-06 Metro Kalvar Inc Apparatus for sound and image printing of irradiation sensitive film
US3690766A (en) * 1970-02-25 1972-09-12 Minnesota Mining & Mfg Photographic film duplicator

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008512139A (ja) * 2004-09-07 2008-04-24 セント ジュード メディカル カーディオロジー ディビジョン インコーポレイテッド 閉鎖装置、閉鎖装置の供給方法、および閉鎖装置の使用方法

Also Published As

Publication number Publication date
WO2002017012A3 (fr) 2002-07-04
AU9321001A (en) 2002-03-04

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