US3874283A - Sheet squeezing device - Google Patents

Sheet squeezing device Download PDF

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Publication number
US3874283A
US3874283A US354973A US35497373A US3874283A US 3874283 A US3874283 A US 3874283A US 354973 A US354973 A US 354973A US 35497373 A US35497373 A US 35497373A US 3874283 A US3874283 A US 3874283A
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US
United States
Prior art keywords
roller
leaf member
sheet
squeezing
leaf
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
US354973A
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English (en)
Inventor
Shunichi Igarashi
Takeshi Okano
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.)
Fujifilm Holdings Corp
Original Assignee
Fuji Photo Film 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
Application filed by Fuji Photo Film Co Ltd filed Critical Fuji Photo Film Co Ltd
Application granted granted Critical
Publication of US3874283A publication Critical patent/US3874283A/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
    • G03D15/00—Apparatus for treating processed material
    • G03D15/02—Drying; Glazing

Definitions

  • This invention relates to a squeezing device, and more particularly to a device for effectively squeezing a sheet to remove a liquid from the surface thereof.
  • the primary object of the present invention is to provide a sheet squeezing device which effectively squeezes a sheet in a uniform manner.
  • Another object of the present invention is to provide a device for uniformly squeezing a wet sheet which has a simple construction.
  • Still another object of the present invention is to provide a device for uniformly squeezing a wet sheet in which the squeezed out liquid is removed from the surface of the sheet and is not held adjacent to the contact point at which the squeezing device is in contact with the wet surface of the sheet.
  • a further object of the present invention is to provide a device for uniformly squeezing a wet sheet which has liquid carried on one surface thereof.
  • FIG. 1 is a side view of a sheet squeezing device in accordance with one embodiment of the present invention
  • FIG. 2 is a side view of a sheet squeezing device in accordance with another embodiment of the present invention which has a longer resilient squeezing leaf member, and
  • FIG. 3 is a side elvational view showing another embodiment of a sheet squeezing device in accordance with the present invention which has a guide member.
  • a sheet which carries a liquid on the downwardly faced surface thereof la is indicated by reference numeral 1.
  • the sheet 1 is passed between a rotatable driving roller 2 and a resilient squeezing leaf member 3.
  • the resilient squeezing leaf member 3 is spring biased against the surface of the roller 2 at the lower end of the roller.
  • the lower end of the leaf member is fixed to a stationary metal fixture member 4 and the upper end thereof is urged against the lower end surface of the roller 2.
  • the position of the lower end of the leaf spring member 3 is adjustable so as to control the bias pressure thereof on the surface of the roller 2.
  • the upper end 3a of the leaf member 3 is directed rearwardly so that the sheet 1 may pass smoothly between the end of the leaf member 3a and the roller 2.
  • the roller 2 is driven counterclockwise in FIG. I and the upper end 3a of the resilient leaf member 3 is constantly urged against the surface of the roller 2 with a proper pressure. Then, a sheet 1 carrying a liquid such as developer liquid on the downwardly faced surface la thereof is passed between the roller 2 and the upper end 3a of the leaf member 3 spring biased thereagainst. By the spring force, the liquid carried on the surface Ia of the sheet 1 is squeezed or removed by the end of the leaf member 3.
  • FIG. 2 showing another embodiment of the squeezing device wherein like members to those described in FIG. 1 are indicated with similar reference numerals
  • the upper end portion of the spring biased resilient leaf member 31 is shown to-be slightly longer than that employed in the first embodiment'shown in FIG. 1.
  • the upper end 31a is located slightly rearward of the contact point where the member 3] is in contact with the lower surface of the roller 2. This permits even, efficient liquid removal since the liquid naturally flows on the surface of the leaf member in the direction of travel of the sheet as shown in FIGS. 1-3.
  • the upper end portion 31b of the leaf member 31 is.slightly bent to form a cylindrical surface to be in contact with the surface of the roller 2 so that the sheet passing between the roller and the leaf member may pass smoothly therebetween, and further whereby liquid is efficienty removed.
  • the cylindrical suface insures that if some slight misplacement of the leaf member results a smooth surface still contacts the sheet passing between the leaf memher and roller.
  • a guide plate 5 is provided just in front of the leaf member 32 so that the upper end of the guide plate 5 can guide the sheet 1.
  • the upper end of the guide plate 5 is located on the passage line of the sheet 1 or slightly below the passage line and serves as a support and a guide for preventing the sheet 1 from entering between the roller 2 and the leaf member 32, from sagging down or from being attracted by the wet surface of the curved leaf member 32. Further, the upper end of the guide plate 5 scrapes the liquid off the sheet.
  • the lower end of the guide plate is fixed to and supported by a metal fixture member 4.
  • the resilient leaf member 3, 31 or 32 is desirably hydrophobic (repels water) so that the liquid may easily drop off the end of the leaf member as shown in FIGS. 1, 2 and 3.
  • the members 3, 31 or 32 basically face the center of the roller which they are biased against, generally applying a bias pressure against the sheet material passing between the member and the roller on the order of about 900 to about 1,000 g/cm.
  • the liquid squeezed off from the wet surface of the sheet 1 does not remain on the leaf spring but smoothly drops off the end of the leaf member, and there is no fear of uneven wetness of the sheet after the squeezing process.
  • the leaf member positively contacts the surface of the roller throughout the length thereof even if the roller is slightly bent, since the resilient leaf member if resilient and soft enough to do so.
  • the driving power is low in comparison to the driving power needed to drive a squeezing system involving two rollers.
  • EXAMPLE As an example, the inventors made a copying paper squeezing device in accordance with the present invention, in which cellulose triacetate films were used as the squeezing leaf member 32 and as the guide plate 5 and a photosensitive copying paper was passed through the squeezing device.
  • the thickness of the film used as the leaf member 32 was 100 to 200 microns and the thickness of film used as the guide member 5 was not more than 100 microns.
  • the roller which was rubber, had a diameter of I) mm, and was rotated at 40-100 pm, with a paper feed rate of 5 sheets/second.
  • the clearance between the paper and the guide member was zero, and the distance between the guide member and leaf member roller contact point was 6 mm, whereas the distance between the guide member and the very rearwardly extending top of the leaf member was 10 mm.
  • the contact pressure of the roller 2 was set at about 1 Kg/cm As a result, the amount of liquid scraped off from the surface of the sheet by the guide plate 5 increased by about 0.2 grams per sheet.
  • the present invention can be applied to various fields by changing the material, thickness and the contact pressure on the roller of the leaf member and the guide plate.
  • a device for squeezing a liquid carrying sheet material comprising a roller rotatable about a fixed horizontal axis, means for driving said roller, a resilient leaf member supported at the lower end thereof beneath said roller and having an upper end portion in pressure contact with the lower surface of the roller, sheet material being directed between the roller and the leaf member and being moved by contact with said roller, the upper end of the leaf member being directed rearwardly with respect to the advance of said sheet material passing between the roller and the leaf member, and the upper end portion of said leaf member being curved so that the lower surface of said roller is in' contact with the upper end portion of the leaf member at a position slightly remote from the upper end thereof, and wherein the upper end portion of said leaf member is curved rearwardly and downwardly in the direction of movement of said sheet material, and wherein the leaf member contacts the roller along a line in vertical alignment with the horizontalaxis of the roller.
  • a sheet squeezing device as defined in claim I wherein a guide plate is provided in front of the leaf member and below said sheet material such that the sheet material is prevented from sagging downward as it approaches the line of contact between said resilient leaf member and said roller.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Delivering By Means Of Belts And Rollers (AREA)
  • Photographic Processing Devices Using Wet Methods (AREA)
US354973A 1972-04-27 1973-04-27 Sheet squeezing device Expired - Lifetime US3874283A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP47042363A JPS495030A (enrdf_load_stackoverflow) 1972-04-27 1972-04-27

Publications (1)

Publication Number Publication Date
US3874283A true US3874283A (en) 1975-04-01

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ID=12633939

Family Applications (1)

Application Number Title Priority Date Filing Date
US354973A Expired - Lifetime US3874283A (en) 1972-04-27 1973-04-27 Sheet squeezing device

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US (1) US3874283A (enrdf_load_stackoverflow)
JP (1) JPS495030A (enrdf_load_stackoverflow)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5010839A (en) * 1983-03-01 1991-04-30 Valmet Paper Machinery Inc. Coater for selectively coating a running web either on one side or on both sides
GB2264367A (en) * 1992-02-14 1993-08-25 Agfa Gevaert Ag Device for wiping liquids off running webs of photographic material
US5622028A (en) * 1995-07-25 1997-04-22 Harp; Ralph E. Pharmaceutical unit dose package sealing apparatus and method

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US261654A (en) * 1882-07-25 William bibch
US3181500A (en) * 1960-01-25 1965-05-04 Minnesota & Ontario Paper Co Apparatus for the production of coated paper
US3302610A (en) * 1963-10-10 1967-02-07 Beloit Corp Inverted trailing blade
US3335701A (en) * 1965-06-04 1967-08-15 Agfa Gevaert Nv Trailing blade
US3641975A (en) * 1969-03-21 1972-02-15 Plastres Manurhin S A R L Tube winding apparatus
US3704662A (en) * 1970-04-27 1972-12-05 Addressograph Multigraph Liquid developing apparatus

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4413432Y1 (enrdf_load_stackoverflow) * 1966-11-24 1969-06-04

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US261654A (en) * 1882-07-25 William bibch
US3181500A (en) * 1960-01-25 1965-05-04 Minnesota & Ontario Paper Co Apparatus for the production of coated paper
US3302610A (en) * 1963-10-10 1967-02-07 Beloit Corp Inverted trailing blade
US3335701A (en) * 1965-06-04 1967-08-15 Agfa Gevaert Nv Trailing blade
US3641975A (en) * 1969-03-21 1972-02-15 Plastres Manurhin S A R L Tube winding apparatus
US3704662A (en) * 1970-04-27 1972-12-05 Addressograph Multigraph Liquid developing apparatus

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5010839A (en) * 1983-03-01 1991-04-30 Valmet Paper Machinery Inc. Coater for selectively coating a running web either on one side or on both sides
GB2264367A (en) * 1992-02-14 1993-08-25 Agfa Gevaert Ag Device for wiping liquids off running webs of photographic material
US5339129A (en) * 1992-02-14 1994-08-16 Agfa-Gevaert Aktiengesellschaft Device for wiping liquids off running webs of photographic material
GB2264367B (en) * 1992-02-14 1995-06-21 Agfa Gevaert Ag Device for wiping liquids off running webs of photographic material
US5622028A (en) * 1995-07-25 1997-04-22 Harp; Ralph E. Pharmaceutical unit dose package sealing apparatus and method

Also Published As

Publication number Publication date
JPS495030A (enrdf_load_stackoverflow) 1974-01-17

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