EP1296185A1 - Vorrichtung zum Entfernen von Feuchtigkeit von blattförmigen fotografischen Schichtträgern - Google Patents
Vorrichtung zum Entfernen von Feuchtigkeit von blattförmigen fotografischen Schichtträgern Download PDFInfo
- Publication number
- EP1296185A1 EP1296185A1 EP01122803A EP01122803A EP1296185A1 EP 1296185 A1 EP1296185 A1 EP 1296185A1 EP 01122803 A EP01122803 A EP 01122803A EP 01122803 A EP01122803 A EP 01122803A EP 1296185 A1 EP1296185 A1 EP 1296185A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- wiper lip
- sheet
- squeezing surface
- lip
- supports
- 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.)
- Pending
Links
- 239000007788 liquid Substances 0.000 claims description 2
- 239000000758 substrate Substances 0.000 description 7
- 238000007791 dehumidification Methods 0.000 description 4
- 230000018109 developmental process Effects 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Images
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
- G03D15/00—Apparatus for treating processed material
- G03D15/02—Drying; Glazing
Definitions
- the invention relates to a device for removing moisture of sheet-shaped photographic substrates according to the generic term of claim 1.
- Sheet-shaped photographic supports such as in the form of Single sheets of exposed photo paper are usually used developed only in so-called minilabs. In the large laboratory, however, they are Single images exposed on long paper tapes, which are only after development and drying can be cut into single sheets.
- the treatment such long paper tapes can be realized with much simpler means, than the treatment of single sheets. Even with long ones Paper tapes can achieve higher throughput speeds. justified this is because when treating long paper tapes Threading operations are practically completely eliminated. This is usually the case the beginning of the next is already glued to the end of one paper tape or when the machine is at a standstill for cleaning or service purposes an intermediate belt is drawn into the machine, with the help of which when restarting the beginning of a new paper tape the machine can be pulled through.
- each sheet when processing single sheets, each sheet must have its leading edge in every treatment facility or every pair of transport rollers to be threaded on its way through the machine. This also applies to Devices for dehumidifying the substrates between the individual Wet treatment stages and before the dryer.
- the task is solved by a device for dehumidifying leaf-shaped photographic layer support with the characteristic features of claim 1.
- a device for dehumidifying leaf-shaped photographic layer support with the characteristic features of claim 1.
- a wiper lip in connection with a squeezing surface between two pairs of transport rollers a significantly improved dehumidification effect, especially with small formats.
- the result is less carryover from that Layer of adhering treatment liquid from a treatment bath in the following treatment bath. This allows the regeneration rates of the individual treatment baths can be reduced. simultaneously the achievable image quality can be increased because, for example Traces of developer running on the surface of the images avoided become.
- the squeezing surface advantageously has a low coefficient of friction to prevent the front edge or front from sticking Prevent area of the substrate. Such clinging would lead to a paper jam that destroys the cut sheet could, or at least a manual intervention to eliminate the Error.
- the squeeze surface at an angle between 5 ° and 15 ° against the Transport plane inclined for the sheet-shaped substrate. This angular range ensures a safe insertion of the front edge of the Layer carrier between the wiper lip and the squeezing surface without losing the Block leading edge. Likewise, the proposed angular range surface adhesion of the layer support to the squeezing surface avoided.
- Photo paper that is already being transported through a treatment tank has a low inherent rigidity. If the leading edge is one Single sheet against the pair of feed rollers on the input side pushed a resistor like that through the wiper lip and the squeeze surface is formed, the single sheet can easily become one Deform the loop and thus lead to a malfunction. Because the inherent rigidity of paper decreases the further the leading edge extends conveyed out the nip of the pair of transport rollers on the input side is a fine match between the distance of the wiper lip to the pair of feed rollers on the input side and the contact pressure the wiper lip on the squeezing surface.
- the contact pressure the wiper lip is set so that a photographic Support with a tensile force between 5 Newton and 30 Newton to a meter of paper width, through the gap between the wiper lip and squeeze surface can be pulled. If the contact pressure Moving in this area should be the distance between the input Transport roller pair and the wiper lip a value of Do not exceed 40 mm.
- the service life of the wiper lips can be improved enormously if measures are taken be taken to ensure that the sharp side edges the photographic support is not always the same Apply the wiping lips. According to the invention it is therefore provided the single sheets not on one line, but with different ones to transport lateral displacement through the developing device.
- This lateral offset of each layer support to the one in front The substrate is advantageously redetermined for each substrate and Z. B. determined via a random generator.
- the moisture removal device shown in Fig. 1 has an input-side pair of transport rollers 2 and an output side Transport roller pair 3 on. There is between these pairs of rollers an oblique guide ramp 4 with the squeeze surface 8. On the squeeze surface 8 puts the tip of the elastic wiper lip 5 on the holder 6 is attached. Via a spring, not shown, the force of which is adjustable is, the holder 6 is rotated around the fixed bearing 7, so that the Wiping lip 5 presses the squeezing surface 8 with an adjustable force.
- the distance A between the tip of the elastic wiper lip 5 and the input side Transport roller pair 2 must not be larger than 40 mm.
- the inclined position of the squeezing surface 8 ensures that from one through the input-side transport roller pair 2 into the device photographic substrates only carried the leading edge comes into contact with the squeezing surface 8. This makes a flat Avoid sucking the wet paper on the squeezing surface.
- the contact pressure of the elastic wiper lip 5 must, for example be adjusted via the adjustable spring, not shown, so that for a trouble-free operation is guaranteed and on the other good stripping result is achieved.
- the pulling force needed is a single sheet with the format 13x18 cm in the longitudinal direction to pull through the gap between the wiper lip 5 and the squeezing surface 8, the contact pressure should be set so that there is a tensile force of about 3.5 Newtons.
- the squeeze surface 8 in front of and behind the point at which to provide the elastic wiper lip 5 with wide longitudinal grooves, so that only narrow webs come into contact with the single sheet and contact across the entire blade width only in the area of the wiper lip consists. In this way it is even better to vacuum the surface wet underside of the photographic support on the squeeze surface 8 prevents without reducing the efficiency of the device is reduced.
- Fig. 2 is part of a conveyor, for example by a Treatment tank of a developing device according to the invention, shown.
- the pairs of transport rollers 9 stored in the frame 10 is for reasons of clarity only the one behind the photographic Layer carrier shown roller.
- the service life of the wiper lip can thus be extended extend many times.
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Photographic Processing Devices Using Wet Methods (AREA)
- Delivering By Means Of Belts And Rollers (AREA)
Abstract
Description
- Fig. 1
- eine schematische Darstellung der erfindungsgemäßen Vorrichtung und
- Fig. 2
- einen Teil einer Fördereinrichtung in einer erfindungsgemäßen Entwicklungsvorrichtung
Claims (9)
- Vorrichtung zum Entfernen von Feuchtigkeit von blattförmigen fotografischen Schichtträgern mit einem eingangsseitigen und einem ausgangsseitigen Transportwalzenpaar, dadurch gekennzeichnet, dass zwischen den beiden Transportwalzenpaaren eine nicht bewegbare Abquetschfläche und eine auf die Abquetschfläche aufsetzende, elastische Abstreiflippe vorgesehen sind.
- Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass die Abquetschfläche eine glatte Oberfläche mit geringem Reibungskoeffizienten aufweist.
- Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass die Abquetschfläche mit der Transportebene für die blattförmigen fotografischen Schichtträger einen Winkel zwischen 5° und 15° bildet.
- Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass der Abstand zwischen dem eingangsseitigen Transportwalzenpaar und der elastischen Abstreiflippe kleiner als 40 mm ist.
- Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass die elastische Abstreiflippe eine Shore-Härte von maximal 90° aufweist.
- Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass die elastische Abstreiflippe so befestigt ist. dass über die Breite der Vorrichtung ein konstanter Anpressdruck auf die Abquetschfläche ausgeübt wird.
- Vorrichtung nach Anspruch 6, dadurch gekennzeichnet, dass der Anpressdruck so eingestellt ist, dass ein fotografischer Schichtträger mit einer Zugkraft/Breite des Schichtträgers zwischen 5 und 30 N/m zwischen der Abquetschfläche und der elastischen Abstreiflippe hindurch gezogen werden kann.
- Vorrichtung zum Entwickeln blattförmiger fotografischer Schichtträger mit mehreren mit Behandlungsflüssigkeit gefüllten Behandlungstanks, durch die die fotografischen Schichtträger nacheinander hindurch gefördert werden und mit einem Trockner, dadurch gekennzeichnet, dass zwischen wenigstens zwei Behandlungstanks und/oder zwischen einem Behandlungstank und dem Trockner eine Vorrichtung nach Anspruch 1 vorgesehen ist.
- Vorrichtung nach Anspruch 8, dadurch gekennzeichnet, dass die blattförmigen fotografischen Schichtträger in seitlich versetzter Anordnung gefördert werden, so dass die Seitenränder mehrerer hintereinander folgender Schichtträger mit unterschiedlichen Stellen der Abstreiflippe in Kontakt kommen.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP01122803A EP1296185A1 (de) | 2001-09-21 | 2001-09-21 | Vorrichtung zum Entfernen von Feuchtigkeit von blattförmigen fotografischen Schichtträgern |
US10/251,510 US6648524B2 (en) | 2001-09-21 | 2002-09-19 | Device for removing moisture from sheets of photographic materials |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP01122803A EP1296185A1 (de) | 2001-09-21 | 2001-09-21 | Vorrichtung zum Entfernen von Feuchtigkeit von blattförmigen fotografischen Schichtträgern |
Publications (1)
Publication Number | Publication Date |
---|---|
EP1296185A1 true EP1296185A1 (de) | 2003-03-26 |
Family
ID=8178706
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP01122803A Pending EP1296185A1 (de) | 2001-09-21 | 2001-09-21 | Vorrichtung zum Entfernen von Feuchtigkeit von blattförmigen fotografischen Schichtträgern |
Country Status (2)
Country | Link |
---|---|
US (1) | US6648524B2 (de) |
EP (1) | EP1296185A1 (de) |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0302956A1 (de) * | 1987-08-11 | 1989-02-15 | RETHETO Filmtechnik Theilemann & Co. | Filmreinigungsvorrichtung |
EP0491049A1 (de) * | 1990-07-09 | 1992-06-24 | Fuji Photo Film Co., Ltd. | Vorrichtung zur verarbeitung von lichtempfindlichem silberhalogenidmaterial |
US5339129A (en) * | 1992-02-14 | 1994-08-16 | Agfa-Gevaert Aktiengesellschaft | Device for wiping liquids off running webs of photographic material |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4127082A (en) * | 1975-09-26 | 1978-11-28 | Sharp Kabushiki Kaisha | Wiper roller for drying a wet sheet in a copying machine |
US4117604A (en) * | 1977-03-31 | 1978-10-03 | Pako Corporation | Dryer for photographic processors |
DE4030060C2 (de) * | 1990-09-22 | 1999-09-16 | Agfa Gevaert Ag | Vorrichtung zur Reinigung oder Entfeuchtung von bandförmigem Material |
DE4141192A1 (de) | 1991-12-04 | 1993-06-09 | Agfa-Gevaert Ag, 5090 Leverkusen, De | Fluessigkeitsabstreifer fuer fotografisches material |
-
2001
- 2001-09-21 EP EP01122803A patent/EP1296185A1/de active Pending
-
2002
- 2002-09-19 US US10/251,510 patent/US6648524B2/en not_active Expired - Fee Related
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0302956A1 (de) * | 1987-08-11 | 1989-02-15 | RETHETO Filmtechnik Theilemann & Co. | Filmreinigungsvorrichtung |
EP0491049A1 (de) * | 1990-07-09 | 1992-06-24 | Fuji Photo Film Co., Ltd. | Vorrichtung zur verarbeitung von lichtempfindlichem silberhalogenidmaterial |
US5339129A (en) * | 1992-02-14 | 1994-08-16 | Agfa-Gevaert Aktiengesellschaft | Device for wiping liquids off running webs of photographic material |
Also Published As
Publication number | Publication date |
---|---|
US6648524B2 (en) | 2003-11-18 |
US20030059220A1 (en) | 2003-03-27 |
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