US3680755A - Web processing apparatus - Google Patents

Web processing apparatus Download PDF

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Publication number
US3680755A
US3680755A US147002A US3680755DA US3680755A US 3680755 A US3680755 A US 3680755A US 147002 A US147002 A US 147002A US 3680755D A US3680755D A US 3680755DA US 3680755 A US3680755 A US 3680755A
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US
United States
Prior art keywords
web
predetermined location
towbar
leading end
advancing
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
US147002A
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English (en)
Inventor
Sanford Wayne Foor
John F Egan
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.)
Eastman Kodak Co
Original Assignee
Eastman Kodak Co
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 Eastman Kodak Co filed Critical Eastman Kodak Co
Application granted granted Critical
Publication of US3680755A publication Critical patent/US3680755A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03D—APPARATUS FOR PROCESSING EXPOSED PHOTOGRAPHIC MATERIALS; ACCESSORIES THEREFOR
    • G03D3/00—Liquid processing apparatus involving immersion; Washing apparatus involving immersion
    • G03D3/08—Liquid processing apparatus involving immersion; Washing apparatus involving immersion having progressive mechanical movement of exposed material
    • G03D3/12—Liquid processing apparatus involving immersion; Washing apparatus involving immersion having progressive mechanical movement of exposed material for plates, films or prints spread onto belt conveyors
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03D—APPARATUS FOR PROCESSING EXPOSED PHOTOGRAPHIC MATERIALS; ACCESSORIES THEREFOR
    • G03D13/00—Processing apparatus or accessories therefor, not covered by groups G11B3/00 - G11B11/00
    • G03D13/003—Film feed or extraction in development apparatus

Definitions

  • a second web drive of the processor is disposed downstream from the processing solution applicator track to disengage the leading web end from the towbar by advancing such end at a faster speed than the web drawing speed of the chain-drive.
  • a web processor wherein a towbar and chain-drive assembly is adapted to engage a leading web end at a predetermined location and draw a web so engaged along a feed path extending above and in the same direction as that of a processing solution applicator track.
  • the leading web end is positioned for engagement with the towbar by a first web drive of the processor which advances such end from a web supply source to the predetermined location. Since the first web drive advances an engaged web at a faster speed than the web drawing speed of the chaindrive, a web portion extending between the first web drive and the towbar will sag into the processing solution applicator track.
  • the sagging web portion will be drawn by the towbar and chain-drive assembly along the processing solution applicator track without exposing the towbar to processing solution in such track.
  • a second web drive of the processor is disposed downstream from the processing solution applicator track to disengage the leading web end from the towbar by advancing such end at a faster speed than the web drawing speed of the chain-drive.
  • FIG. 1 is a planview, partially in section, of a web handling arrangement in a web processor according to a preferred embodiment of the present invention
  • FIG. 4 is a plan view of the web processor illustrated in FIG. 1 and a web supply source, showing the manner in which a sag is effected in a web portion which trails a leading web end engaged by the towbar;
  • FIG. 5 is a plan view of the web processor illustrated in FIG. 1 and a web supply source, showing the manner in which a sagging web portion is successively advanced from a processing solution application track to a washing solution applicator track;
  • FIG. 6 is a fragmentary plan view of the web processor illustrated in FIG. 1, showing the manner in which a leading web end is advanced to a web take-up after being disengaged from the towbar;
  • FIG. 7 is a perspective view of a mechanism for disengaging a leading web end from the towbar and, thereafter, advancing such end to the web take-up;
  • FIG. 8 is a schematic diagram of an electrical circuit for the web handling arrangement in the web processor.
  • the web processor 1 is provided with a pair of substantially parallel guide rails 2 and 3 and a normally opened start switch 4 including a feeler member or switch element 5 which extends adjacent the guide rail 3. If a web supply source, such as a web bearing cartridge C, should be received between the guide rails 2 and 3 so as to abut against the feeler member 5 and close the switch 4 in the manner shown by FIG. 2, a drive motor 6 and a first solenoid 7 of the web processor 1 will be energized.
  • a web supply source such as a web bearing cartridge C
  • a plunger member 8 of such solenoid Upon energization of the first solenoid 7, a plunger member 8 of such solenoid will be moved inwardly from a normally extended position shown in FIG. 1 to a retracted position shown in FIGS. 2 and 3. whereupon, a bar 9 which is pivotally coupled to the solenoid plunger 8 by a pin 10 will be pivoted about a bar support shaft 11 from an idle position shown in FIG. 1 to an operative position A shown in FIGS. 2 and 3, and a finger member 12 of the solenoid plunger will serve to pivot a plate 13 against the urging of a helical tension spring 14 about a plate support shaft 15 from an idle position shown in FIG. 1 to an operative position shown in FIGS. 2 and 3.
  • the drive motor 6, when energized as previously described, serves to rotate a drive roller 16 on the bar 9 in a clockwise direction generally indicated by the arrow 17. Since the drive roller 16 will be disposed in peripheral abutting relation with an idler roller 18 of the web processor 1 upon movement of the bar 9 to the operative position shown in FIG. 2, a free leading end L of web material W wound within the received cartridge C will be sandwiched between the drive and idler rollers and advanced outwardly from such cartridge. Moreover, since a normally opened web sensing switch 19 on the plate 13 has heretofore been moved with the plate to the operative position shown in FIG. 2, the advanced leading web end L will abut against a feeler member or switch element 20 of the web sensing switch so as to close such switch in the manner shown by FIG. 3.
  • a second solenoid 21 of the web processor 1 Upon closing of the web sensing switch 19 as shown by FIG. 3, a second solenoid 21 of the web processor 1 will be energized. Whereupon, a plunger member 22 of the second solenoid will be moved inwardly from a normally extended position shown in FIG. 2 to a retracted position shown in FIG. 3, and an arm 23 which is pivotally coupled to the second solenoid plunger by a pin 24 will be pivoted against the urging of a helical tension spring 25 about an arm support shaft 26 from an idle position shown in FIG. 2 to an operative position shown in FIG. 3. In the operative position, a fingerlike extension 27 of the arm 23 engages a rotatably supported gear wheel 28 on the bar 9. As can be seen in FIG.
  • the gear wheel 28 interconnects the drive motor 6 and the drive roller 16 via slip clutches 29 and 30 for rotation of the drive roller upon energization of the drive motor.
  • the gear wheel 28 prevents rotation of the drive roller 16 by the drive motor 6 but permits the drive roller to idle by means of the slip clutch 30. Therefore, as shown in FIGS. 2 and 3, the leading web end L will be advanced from the received cartridge C to the web sensing switch 19 and, thereafter, will be stationarily located at such switch upon engagement of the gear wheel 28 by the arm extension 27.
  • an electromagnetic clutch 31 located between the drive motor 6 and a drive sprocket wheel 32 of the web processor 1 will be actuated for rotation of such wheel by the drive motor in a clockwise direction generally indicated by the arrow 33 (see FIG. 4). Since a continuous sprocket chain 34 extends in engaged relation partially about the drive sprocket wheel 32 and an idler sprocket wheel 35, rotation of the drive sprocket wheel in the illustrated clockwise direction will serve to move the sprocket chain in a direction generally indicated by the arrow 36 (see FIG. 4).
  • towbar 37 which is secured to the sprocket chain 34 will be moved with such chain from an idle position, wherein the towbar is abutted against a feeler member or switch element 38 of a normally closed chain-actuation-sensing switch 39 as shown in FIG. 1, to an operative position, wherein the towbar has moved past the chain-actuation-sensing switch to engage the leading web end L (by means of an opening in such end) as shown in FIG. 3.
  • the chain-actuation-sensing switch 39 is opened by the towbar 37 when the towbar is abutted against the feeler member 38 and is closed when the towbar is spaced from such switch.
  • the towbar and engaged web end are drawn by the sprocket chain 34 along a path which is disposed above and extends in the same direction as a processing solution applicator track 40 and a washing solution applicator track 41 of the web processor 1, see FIG. 4.
  • first relay 42 upon closing of the web sensing switch 19 in the foregoing manner, DC voltage will be applied across a first relay 42.
  • Such voltage originates from a source which is not shown.
  • the first relay 42, as well as a second relay 43 are of the time delay variety. That is to say, the first and second relays 42 and 43 will not be energized at the instant of application of DC voltage respectively thereacross but, instead, will be energized after a predetermined time interval has elapsed after such application of DC voltage.
  • the web material W will no longer be advanced from the received cartridge C by the drive and idler rollers 16 and 18 but will continue to be drawn in a direction generally indicated by the arrow 36 by the towbar 37 and the sprocket chain 34. Moreover, as the drive and idler rollers 16 and 18 are now disposed in spaced relation, no hold-back tension will be asserted on the sagging web portion W.
  • the leading web end L will be drawn by the towbar 37 and the sprocket chain 34 through a web drier 44 (the details of which are not embodied in the present invention) and, thence, to an assembly 45 for disengaging the leading web end from the towbar and for advancing the leading web end, when so disengaged, to a web take-up device 46 (the details of which are not embodied in the present invention).
  • the assembly 45 is provided with a pair of substantially parallel drive rollers 47 and 48 which are supported on a drive roller shaft 49 for synchronous rotation by the drive motor 6 in a counterclockwise direction generally indicated by the arrow 50.
  • the drive rollers 47 and 48 are respectively held in peripheral abutment (by means not shown) against a pair of substantially parallel idler rollers 51 and 52 which are supported for rotation on an idler roller shaft 53.
  • a gearing mechanism 54 is disposed between the drive motor 6 and the drive roller shaft 49 to cause the drive rollers 47 and 48 to be rotated by the drive motor at a faster peripheral speed than the web drawing speed of the towbar 37 and the sprocket chain 34. Therefore, when the leading web end L is moved between the drive and idler rollers 47, 48, 51 and 52, such end will be disengaged from the towbar 37 and advanced by the same rollers into a web guide track 55 which extends to the web take-up device 46.
  • the towbar 37 when disengaged from the leading web end L, will be moved with the sprocket chain 34 over an idler roller 56 which is disposed between the idler rollers 51 and 52 and supported (by means not shown) for rotation independent of such rollers. Thereafter, the towbar 37 will be moved with sprocket chain 34 to the idle position shown in FIG. 6, wherein the towbar is abutted against the feeler member 38 of the chain-actuation-sensing switch 39 so as to open such switch. Upon opening of the chain-actuation-sensing switch 39, the electromagnetic clutch 31 will be deeactuated and the towbar 36 and the sprocket chain 34 will come to rest in the manner shown by FIG. 6.
  • the circuit includes a pair of contact terminals 61 and 62 which are coupled to a source (not shown) of DC voltage in a manner such that, when the start switch 4 is closed upon receipt of a cartridge C between the guide rails 2 and 3 of the web processor 1, DC voltage will be applied across the drive motor 6 so as to energize such motor.
  • a source not shown
  • an electrical circuit path will be completed from the DC voltage source, through the normally closed second relay contacts 43-1, to the first solenoid 7 for energization of such solenoid.
  • the third relay contacts 63-2 permits the application of DC voltage across a solenoid 31-1, disposed within the electromagnetic clutch 31, so as to energize the clutch solenoid and, thereby, actuate the electromagnetic clutch.
  • actuation of the electromagnetic clutch 31 serves to move the sprocket chain 34 and the towbar 37 from the idle position shown in FIG. 1; whereupon, the chain-actuation-sensing switch 39 is allowed to close.
  • the third relay contacts 63-1 permits the application of DC voltage across the second solenoid 21, since the first relay contacts 42-1 are normally closed, and across the first relay 42. Accordingly, the second relay 21 will be energized.
  • the first relay 42 is of the time delay variety and will not be energized so as to cause the first relay contacts 42-1, 42-2 and 42-3 to change their respective states until a predetermined time interval has elapsed after the application of DC voltage across the first relay. This time interval is chosen to effect deenergization of the second solenoid 21 when the leading web end L is located slightly above the processing solution applicator track 40 as shown in FIG. 4.
  • the normally closed first relay contacts 42-1 Upon energization of the first relay 42, the normally closed first relay contacts 42-1 will open so as to deenergize the second solenoid 21, and the normally opened first relay contacts 42-2 and 42-3 will close so as to permit the application of DC voltage across the second relay 43 and to provide an electrical holding circuit which maintains energization of the first relay and the second relay (when energized) until the start switch 4 is opened.
  • the second relay 43 is of the time delay variety and will not be energized so as to cause the second relay contacts 431 and 43-2 to change their respective states until a predetermined time interval has elapsed after the application of DC voltage across the second relay.
  • This time interval is chosen to effect deenergization of the first solenoid 7 when the leading web end L is located slightly above the washing solution applicator track 41 as shown in FIG. 5.
  • the second relay 43 When the second relay 43 is energized, the second relay contacts 43-1 and 43-2 will be simultaneously opened; whereupon the first solenoid 7 and the third relay 63 will be respectively deenergized.
  • first and second relays 42 and 43 remain energized via will be deenergized.
  • the members of the web processor 1 described hereinbefore are arranged as shown in FIG. 1.
  • the web processor 1 includes an improved web handling arrangement wherein the members of such arrangement will not be exposed to processing solution (not shown) in the processing solution applicator track 40 during operation of the web processor.
  • a web handling arrangement comprising:
  • a feeler member for detecting the leading end of such a web at said predetermined location
  • a web handling arrangement comprising:
  • an idler roller having a peripheral groove for receiving said towbar and said chain
  • a web handling arrangement comprising:
  • means defining a processing solution applicator track for receiving a portion of a web in which a sag is effected by said actuating means.
  • a web handling arrangement comprising:
  • processing solution applicator track for receiving a portion of a web in which a sag is effected by said second actuating means.
  • a web handling arrangement comprising:
  • a towbar for engaging the leading end of such a web
  • a chain-drive secured to said towbar for pulling said towbar and an engaged web along said second feed path to said second predetermined location
  • a feeler member for detecting the leading end of such a web at said first predetermined location
  • a web handling arrangement comprising:
  • second means for actuating said advancing means upon the leading end of an engaged web being drawn along said second feed path to said second predetermined location and for, thereby, effecting a sag in a portion of an engaged web which extends between said advancing means and said second predetermined location;
  • means defining a processing solution applicator track, disposed substantially parallel to said second feed path, for receiving a portion of an engaged web in which a sag is efiected by said second actuating means;
  • said disengaging and moving means includes:
  • an idler roller having a peripheral groove for receiving said towbar and said chain
  • rollers for movement toward and away from the other of said rollers between a web advancing position, wherein said rollers are disposed in peripheral abutting relation, and an idle position, wherein said rollers are disposed in spaced relation;
  • said second deactuating means includes:

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Advancing Webs (AREA)
  • Replacement Of Web Rolls (AREA)
  • Controlling Rewinding, Feeding, Winding, Or Abnormalities Of Webs (AREA)
US147002A 1971-05-26 1971-05-26 Web processing apparatus Expired - Lifetime US3680755A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US14700271A 1971-05-26 1971-05-26

Publications (1)

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US3680755A true US3680755A (en) 1972-08-01

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ID=22519956

Family Applications (1)

Application Number Title Priority Date Filing Date
US147002A Expired - Lifetime US3680755A (en) 1971-05-26 1971-05-26 Web processing apparatus

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US (1) US3680755A (enExample)
DE (1) DE2225688C3 (enExample)
FR (1) FR2139109B1 (enExample)
GB (1) GB1391655A (enExample)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5809892A (en) * 1996-05-29 1998-09-22 Heidelberger Druckmaschinen Ag Web-threading or infeeding device for a machine processing web-shaped material, in particular a web-fed rotary printing machine, and method of threading a web of material into such a machine

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3619050A (en) * 1969-06-19 1971-11-09 Eastman Kodak Co Web-handling apparatus and cartridge and web usable therewith

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3619050A (en) * 1969-06-19 1971-11-09 Eastman Kodak Co Web-handling apparatus and cartridge and web usable therewith

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5809892A (en) * 1996-05-29 1998-09-22 Heidelberger Druckmaschinen Ag Web-threading or infeeding device for a machine processing web-shaped material, in particular a web-fed rotary printing machine, and method of threading a web of material into such a machine

Also Published As

Publication number Publication date
FR2139109A1 (enExample) 1973-01-05
DE2225688B2 (enExample) 1974-11-14
FR2139109B1 (enExample) 1973-07-13
DE2225688C3 (de) 1975-07-03
DE2225688A1 (de) 1972-11-30
GB1391655A (en) 1975-04-23

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