EP0091065B1 - Vorrichtung zum getrennten Führen von zwei Schichtträgerblättern durch ein Bad eines Diffusionsentwicklungsgerätes - Google Patents

Vorrichtung zum getrennten Führen von zwei Schichtträgerblättern durch ein Bad eines Diffusionsentwicklungsgerätes Download PDF

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Publication number
EP0091065B1
EP0091065B1 EP83103092A EP83103092A EP0091065B1 EP 0091065 B1 EP0091065 B1 EP 0091065B1 EP 83103092 A EP83103092 A EP 83103092A EP 83103092 A EP83103092 A EP 83103092A EP 0091065 B1 EP0091065 B1 EP 0091065B1
Authority
EP
European Patent Office
Prior art keywords
rollers
tongue
thickening
triangle
plane
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
Application number
EP83103092A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0091065A2 (de
EP0091065A3 (en
Inventor
Günter Schirk
Horst Köninger
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.)
Agfa Gevaert AG
Original Assignee
Agfa Gevaert AG
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 Agfa Gevaert AG filed Critical Agfa Gevaert AG
Publication of EP0091065A2 publication Critical patent/EP0091065A2/de
Publication of EP0091065A3 publication Critical patent/EP0091065A3/de
Application granted granted Critical
Publication of EP0091065B1 publication Critical patent/EP0091065B1/de
Expired legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03D—APPARATUS FOR PROCESSING EXPOSED PHOTOGRAPHIC MATERIALS; ACCESSORIES THEREFOR
    • G03D9/00—Diffusion development apparatus

Definitions

  • the invention relates to a device for separately guiding two substrate sheets through a bath of a diffusion development device, with a pair of feed rollers, the rollers of which each have a cutout in the middle of the guide plane, and a guide element which projects outwardly through the cutout with a tongue between the rolls has approximately the shape of an isosceles triangular plate, the triangle tip merging into the tongue and along the base line of the triangle on both sides of the plane of the triangle, a wedge strip is provided as a spacer strip for the two laminate sheets.
  • the object of the invention is therefore to develop a device of the type mentioned at the outset in such a way that jamming of the sheets to be introduced is avoided.
  • a wave-shaped stiffening of the layer carrier sheets and thus a lifting of the sheets above the critical radii between the tongue and the triangular plate is achieved.
  • the material stabilization thus achieved in the middle of the sheet becomes more unstable with increasing width towards the outside.
  • the delta shape of the triangular plate enables the stabilized part of the sheets to be transported over the cross bar, which acts as a thickener, so that the sheet ends are easily separated even with large-format materials.
  • the edge regions of the rollers are designed with a smaller diameter. This prevents the creasing that occurs due to the less stabilized edge areas.
  • 1 denotes a device frame in which a pair of feed rollers 2 and 3 is mounted.
  • the lower roller 3 is connected to a drive 4 arranged outside the frame 1.
  • the two rollers 2 and 3 have a central cutout 2a and 3a in the middle and gradations 2b and 3b on the sides.
  • the length of each lateral step 2b or 3b is about a quarter to a third of the total roll length.
  • the width of the central cut-out 2a or 3a is slightly larger than the width of a tongue 5, which is carried out between the rollers 2 and 3 and is directed against the insertion direction 6 of two sheets 7.
  • a triangular plate 8 which has approximately the width (base line of the triangle) of the rollers 2 and 3 and is held in the frame 1, is arranged in the feed direction 6 after the pair of feed rollers 2 and 3.
  • the drive 4 is first switched on and then the two blades 7a and 7b (FIG. 3) are inserted one above the other between the rollers 2 and 3 in such a way that the tongue 5 is located between the two blades.
  • the further transport is carried out by the pair of rollers 2, 3. Due to the thickenings 11 and 12, the leaves are lifted above the critical radii between the tongue 5 and the triangular plate 8, so that their front edge cannot get caught on them. As soon as the radius has been overcome, the leaves can slide along the side edges 8a of the triangular plate 8 and are lifted over them. Furthermore, a wave-shaped stiffening is exerted on each sheet by the thickenings 11 and 12, whereby the further guidance after the triangular plate 8 is made easier by deflecting elements 14 into the developer bath 13.
  • the gradations 2b and 3b on the rollers 2 and 3 at their edges have the effect that the edges of the large-format sheets 7a, 7b are loosely moved through the pair of rollers 2, 3. This will prevent the sheets from crumpling prevents what can occur in particular due to the guidance of the sheets over the thickenings 11 and 12, since this causes the sheet to deviate from its plane and thus the lateral sheet margin moves slightly inwards. For this reason, the thickening 11 and 12 is not provided between the rollers 2 and 3, but seen in the feed direction 6 only a short distance after the pair of feed rollers 2, 3. The distance between the thickening 11 and 12 to the cutting plane through the axes of the rollers 2 and 3 is approximately the same as the width of the tongue 5 or the cut-out 2a.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Delivering By Means Of Belts And Rollers (AREA)
  • Photographic Processing Devices Using Wet Methods (AREA)
  • Wet Developing In Electrophotography (AREA)
  • Photographic Developing Apparatuses (AREA)
  • Sheets, Magazines, And Separation Thereof (AREA)
EP83103092A 1982-04-03 1983-03-29 Vorrichtung zum getrennten Führen von zwei Schichtträgerblättern durch ein Bad eines Diffusionsentwicklungsgerätes Expired EP0091065B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3212478A DE3212478C2 (de) 1982-04-03 1982-04-03 Vorrichtung zum getrennten Führen von zwei Schichtträgerblättern durch ein Bad eines Diffusionsentwicklungsgerätes
DE3212478 1982-04-03

Publications (3)

Publication Number Publication Date
EP0091065A2 EP0091065A2 (de) 1983-10-12
EP0091065A3 EP0091065A3 (en) 1985-12-04
EP0091065B1 true EP0091065B1 (de) 1988-06-22

Family

ID=6160181

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83103092A Expired EP0091065B1 (de) 1982-04-03 1983-03-29 Vorrichtung zum getrennten Führen von zwei Schichtträgerblättern durch ein Bad eines Diffusionsentwicklungsgerätes

Country Status (5)

Country Link
US (1) US4498752A (enrdf_load_stackoverflow)
EP (1) EP0091065B1 (enrdf_load_stackoverflow)
JP (1) JPS58189640A (enrdf_load_stackoverflow)
DE (1) DE3212478C2 (enrdf_load_stackoverflow)
DK (1) DK155629C (enrdf_load_stackoverflow)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3436155C1 (de) * 1984-10-03 1986-02-13 Agfa-Gevaert Ag, 5090 Leverkusen Vorrichtung zum Führen von Schichtträgerblättern durch ein Diffusionsentwicklungsgerät
WO2020170429A1 (ja) * 2019-02-22 2020-08-27 三菱電機株式会社 高周波電力増幅器

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2786401A (en) * 1953-06-11 1957-03-26 American Photocopy Equip Co Developing and printing apparatus
US3495905A (en) * 1960-10-03 1970-02-17 Borge Simon Nielsen Apparatus for manufacturing offset printing plates by the method of diffusion
US3136238A (en) * 1960-12-21 1964-06-09 Corona Antonio Device for the production of photographic copies by the silver-salt diffusion process
DE2043693A1 (de) * 1970-09-03 1972-03-09 Böger, Marius, Dr., 2421 Stendorf Vorrichtung zur Übertragung eines auf einem biegsamen Schichtträger befindlichen latenten Negativs auf einen zweiten Schichtträger im Diffusionsverfahren
FR2107203A5 (enrdf_load_stackoverflow) * 1970-09-03 1972-05-05 Boger Marius
DE7036989U (de) * 1970-10-07 1971-01-14 Boeger M Vorrichtung zur uebertragung eines auf einem biegsamen schichttraeger befindlichen latenten negativs auf eine offsetdruckfolie im diffusionsverfahren
US4334757A (en) * 1980-09-02 1982-06-15 Byers Thomas L Diffusion transfer sheet registration

Also Published As

Publication number Publication date
DE3212478A1 (de) 1983-10-13
DE3212478C2 (de) 1984-07-12
JPS58189640A (ja) 1983-11-05
US4498752A (en) 1985-02-12
JPH0148543B2 (enrdf_load_stackoverflow) 1989-10-19
EP0091065A2 (de) 1983-10-12
DK147383D0 (da) 1983-03-30
DK147383A (da) 1983-10-04
DK155629C (da) 1989-10-09
EP0091065A3 (en) 1985-12-04
DK155629B (da) 1989-04-24

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