EP0005252B1 - Device for the dry-development of photosensitive material - Google Patents

Device for the dry-development of photosensitive material Download PDF

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Publication number
EP0005252B1
EP0005252B1 EP79101297A EP79101297A EP0005252B1 EP 0005252 B1 EP0005252 B1 EP 0005252B1 EP 79101297 A EP79101297 A EP 79101297A EP 79101297 A EP79101297 A EP 79101297A EP 0005252 B1 EP0005252 B1 EP 0005252B1
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Prior art keywords
chamber
development
pressure zone
developing
feed
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German (de)
French (fr)
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EP0005252A1 (en
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Walter Fries
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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
    • G03D7/00—Gas processing apparatus

Definitions

  • the invention relates to a device for the dry development of blueprint material by gaseous or vaporous development media, consisting of a development chamber with a drum causing the transport of the blueprint material and one upstream and downstream of the development chamber, delimited by two spaced-apart, stationary screen surfaces Shielding chamber and an additional suction chamber arranged on the outlet side for the development gases or vapors, the shielding surface of the two shielding chambers located at the rear in the running direction of the blueprinting material touching the guide plane for the blueprinting material with a free sealing edge.
  • a device for the dry development of blueprint material of the generic type has become known from US-A-1 809 822.
  • the blueprint material is transported through a drum which is arranged completely outside the development chamber, namely behind the outlet side of the same.
  • a major disadvantage of this known dry developing device is that it is not suitable for the development of sheet-like blueprint material, but that it can only be used to develop long webs of light-sensitive material which are passed in several successive loops over deflection and guide rollers within the development chamber.
  • the dry developing device according to US-A-1 809 822 has further disadvantages.
  • the shielding chamber upstream of the development chamber is exclusively equipped with sealing elements in the wall that also forms the boundary of the development chamber, the free boundary edges of which extend down to the guide level for the blueprint material.
  • the shielding chamber downstream of the development chamber has corresponding sealing members only in its wall remote from the development chamber. Neither the hole upstream of the development chamber nor the shielding chamber downstream of the development chamber is connected to a suction chamber, so that even when the housing of the dry development device is completely closed, the concentration of the gaseous or vaporous development medium, at least in the downstream shielding chamber, reaches that of the development chamber after a relatively short time aligns.
  • a suction device is located only between the shielding chamber on the outlet side and the transport drum which is exposed at a distance behind it, but the chamber of which is open in the direction of the transport drum. Therefore, their effectiveness is severely impaired, because the suction effect is not strong enough to remove the development medium that has penetrated into the blueprint material.
  • NL-A-7 607 793 makes a dry developing device part of the prior art, in which a transport drum arranged inside a housing is used for the blueprint material. Shields in the form of lip seals are also assigned to the transport drum in two different circumferential areas in this dry development device.
  • the transport drum lies only with the smaller partial area of its lateral surface in the development chamber, while its larger lateral surface partial area is always outside the development chamber and consequently comes into contact with the ambient air.
  • the shields form a direct seal between the development chamber and the transport drum, i. that is, they are subject to constant frictional stress due to the rotating transport drum and cannot, of course, guarantee a permanently secure seal.
  • a dry development device for blueprint material has become known, in which the air containing the development medium is extracted from the shielding chambers upstream or downstream of the development chamber.
  • the transport device used here is a pair of transport rollers, each of which lies outside the shielding chamber with a large part of its outer surface and thus a relatively large proportion of the Ent entering the shielding chamber Bring the winding medium into contact with the ambient air.
  • the effectiveness of the shielding chambers is severely impaired.
  • the purpose of the invention is to avoid the described disadvantages of the known dry development devices. Therefore, the goal is to create a dry development device of the generic type, which has no moving parts in a compact design, which can come into contact with the ambient air and also a targeted post-treatment of the blueprint material emerging from the rear shielding chamber in the In order to remove any residual moisture and developer medium that may be present.
  • the solution to this problem consists essentially in the fact that the transport drum is enclosed in the development chamber between the shielding chambers connected upstream or downstream in different circumferential areas with its entire circumference, so that each of the shielding chambers has at least one additional shielding surface in a row Rooms is divided and all screen surfaces with free sealing edges touch the guide level for the blueprint material, that each of the shielding chambers with all their rooms in series is connected to a special suction chamber and that another transport device for the blueprint material is arranged in an outlet-type degassing chamber, the outlet-side shielding chamber facing peripheral area is surrounded by an impermeable wall.
  • each of the screen surfaces consists entirely of flexible material.
  • the flexible screen surfaces can be formed from plastic films, the free boundary edges of which extend down to the guide level in the manner of lip seals.
  • the screen surfaces are each inclined at acute angles in the direction of the blueprint material through the guide plane.
  • the degassing chamber is divided by the transport device into an overpressure and a negative pressure area, there being a flow connection from the overpressure to the negative pressure area, which is led through the wall of the transport device.
  • the further transport device can be designed as a transport drum and both transport drums can be made of porous material, the one transport drum from the inside to the outside of the developing medium and the other transport drum also from the inside to the outside of a degassing medium, for. B. hot air, is flowed through.
  • a degassing medium for. B. hot air
  • the essence of the invention lies primarily in the complete containment of the transport drum in the development chamber.
  • the single figure of the drawing shows a schematically simplified cross-sectional representation of a particularly advantageous design of a dry development device which is suitable for the treatment of sheet-like blueprint material.
  • the dry development device has a housing 1 which is provided on its side, for example the exposure part of a blueprint machine, with a channel 2 which has a guide plane 3 for the blueprint material 4.
  • the channel 2 opens into a substantially circular cross-sectional development chamber 5, in which a rotationally drivable transport drum 6 is mounted so that its lateral surface is as close as possible to the walls 7 delimiting the development chamber 5.
  • a shielding chamber 8 is arranged upstream of the development chamber 5 in the channel 2 and, on the other hand, a corresponding shielding chamber 10 is arranged downstream of its outlet gap 9.
  • Both the shielding chamber 8 and the shielding chamber 10 are delimited by a plurality, for example three, of shielding surfaces 11 and 12 which are spaced one behind the other, in such a way that each shielding chamber has two partial spaces 8 ', 8 "and 10', 10" one behind the other.
  • the subspaces 8 ', 8 "of the shielding chamber 8 are connected at their upper end to a suction chamber 13, while the subspaces 10', 10" of the shielding chamber 10, likewise at their upper end, open into a suction chamber 14.
  • the shield surfaces 11 and 12 of the shielding chambers 8 and 10 are preferably made of flexible material and are clamped gas-tight on their upright side edges and on their upper edge.
  • the free lower edges of the screen surfaces 11 lie in the manner of lip seals on the guide plane 3 of the channel 2, while the free lower edges of the screen surfaces 12 are held in contact with a guide surface 15 in a corresponding manner.
  • This guide surface 15 adjoins the outlet gap 9 of the development chamber 5 and leads into a degassing chamber 16 in which a further, rotationally driven transport drum 17 is mounted.
  • the transport drum 17, like the drum 6, is made of porous material and is almost completely surrounded by guide walls 18 with the smallest possible distance.
  • the right-hand partial shell 18 'of these guide walls 18 consists of impermeable material, while the left-hand partial shell 18' 'is made gas-permeable.
  • An impermeable shield 19 is also held stationary within the transport drum 17 over the section covered by the partial shell 18 '.
  • the transport drum 17 made of porous material separates the degassing chamber 16 into an overpressure area 20 and a underpressure area 21.
  • the overpressure area 20 of the degassing chamber 16 is formed on the one hand by the cavity and on the other hand by the porous walls of the transport drum 17, to which the underpressure area 21 is connected via the permeable partial shell 18 ′′.
  • the vacuum region 21 of the degassing chamber 16 and the suction chambers 13 and 14 of the shielding chambers 8 and 10 are connected to a common suction device.
  • the blueprint material 4 is introduced into the development chamber 5 on the guide plane 3 of the channel 2 under the lower edges of the screen surfaces 11. There it is gripped on its layer side by the lateral surfaces of the transport drum 6 and moved along the walls 7 of the development chamber 5. This acts through the porous walls of the transport drum 6 radially outward gaseous or vaporous development medium, for. B. ammonia, directly on the layer side of the blueprint material and fixes the unexposed imaging areas. On its way through the development chamber 5, the developed blueprint material then passes through the outlet gap 9 onto the guide surface 15, on which it is then passed under the edges of the screen surfaces 12 lying thereon.
  • gaseous or vaporous development medium for. B. ammonia
  • the suction effect maintained in the two shielding chambers 8 and 10 prevents the development medium from e.g. P. Ammonia gases or vapors emerge from the development chamber 5.
  • the relatively small amount of development medium which has penetrated into the blueprint material itself is then expelled in the degassing chamber 16, while the blueprint material 14 is gripped by the transport drum 17 and moved along the permeable partial shell 18 ".
  • the blueprint material is with its layer side from the outer surface of the Transport drum 17.
  • the degassing medium supplied to the overpressure region 20 of the degassing chamber 16, for example hot air, is driven radially outward through the porous drum wall, specifically concentrated by that drum section which moves in the region of the permeable partial shell 18 ′′.
  • the degassing medium penetrates the blueprint material 4 from its rear and drives the residual moisture contained therein and with it also the remaining development medium into the negative pressure region 21 of the degassing chamber 16, specifically through the partial shell 18 ′′ formed, for example, from a sieve or perforated plate.
  • a further embodiment of the development device described above consists in the fact that the shielding surfaces 11 delimiting the shielding chambers 8 and 10 or dividing them into a plurality of partial spaces 8 ', 8 "or 10', 10" or 12, viewed in the direction of passage of the blueprint material 14, are held at an acute angle to the guide plane 3 or the guide surface 15, so that they do not impair the passage of the blueprint material 4.
  • the blueprint material 4 passes through an essentially S-shaped transport path within the developing device, so that it is first gripped by the first transport drum 6 on its layer side and then by the second transport drum 17 with its uncoated side.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Photographic Developing Apparatuses (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)

Description

Die Erfindung betrifft eine Vorrichtung für die Trockenentwicklung von Lichtpausmaterial durch gas- bzw. dampfförmige Entwicklungsmedien, bestehend aus einer Entwicklungskammer mit einer den Transport des Lichtpausmaterials bewirkenden Trommel sowie je einer der Entwicklungskammer vor- und nachgeschalteten, durch zwei im Abstand hintereinanderliegende, ortsfest gehaltene Schirmflächen begrenzten Abschirmkammer und einer zusätzlichen, auslaßseitig angeordneten Absaugkammer für die Entwicklungsgase bzw. -dämpfe, wobei die in Laufrichtung des Lichtpausmaterials jeweils hintenliegende Schirmfläche der beiden Abschirmkammern mit einer freien Dichtkante die Führungsebene für das Lichtpausmaterial berührt.The invention relates to a device for the dry development of blueprint material by gaseous or vaporous development media, consisting of a development chamber with a drum causing the transport of the blueprint material and one upstream and downstream of the development chamber, delimited by two spaced-apart, stationary screen surfaces Shielding chamber and an additional suction chamber arranged on the outlet side for the development gases or vapors, the shielding surface of the two shielding chambers located at the rear in the running direction of the blueprinting material touching the guide plane for the blueprinting material with a free sealing edge.

Durch die US-A-1 809 822 ist eine Vorrichtung für die Trockenentwicklung von Lichtpausmaterial der gattungsgemäßen Bauart bekanntgeworden. Hierbei erfolgt der Transport des Lichtpausmaterials durch eine Trommel, die völlig außerhalb der Entwicklungskammer, und zwar hinter derAuslaufseite derselben, angeordnet ist.A device for the dry development of blueprint material of the generic type has become known from US-A-1 809 822. In this case, the blueprint material is transported through a drum which is arranged completely outside the development chamber, namely behind the outlet side of the same.

Ein wesentlicher Nachteil dieser bekannten Trockenentwicklungsvorrichtung liegt darin, daß sie sich nicht für die Entwicklung blattförmigen Lichtpausmaterials eignet, sondern daß hiermit nur lange Bahnen lichtempfindlichen Materials entwickelt werden können, welche innerhalb der Entwicklungskammer in mehreren aufeinanderfolgenden Schleifen über Umlenk- und Führungsrollen geleitet werden.A major disadvantage of this known dry developing device is that it is not suitable for the development of sheet-like blueprint material, but that it can only be used to develop long webs of light-sensitive material which are passed in several successive loops over deflection and guide rollers within the development chamber.

Ein weiterer Nachteil dieser bekannten Trokkenentwicklungsvorrichtung ist auch darin zu sehen, daß das bahnförmige Lichtpausmaterial sich nur durch Öffnen der gesamten Trockenentwicklungs-Vorrichtung in die Entwicklungskammer sowie die dieser vor- und nachgeschalteten Abschirmkammern einfädeln läßt. Abgesehen davon, daß sich die bekannte Trockenentwicklungsvorrichtung nur durch umständliche und zeitraubende Manlpulationen betriebsfähig machen läßt, gelangen durch das notwendige Öffnen des die Abschirmkammern und die Entwicklungskammern verschließenden Deckels zwangsläufig größere Mengen des gas- bzw. dampfförmigen Entwicklungsmediums in die Umgebungsluft. Hierdurch treten nicht nur spürbare und daher unangenehme Geruchsbelästigungen auf, sondern es besteht auch die Gefahr, daß die Brauchbarkeit des noch außerhalb der Trockenentwicklungsvorrichtung auf der Rolle befindlichen Lichtpausmaterial beeinträchtigt wird.Another disadvantage of this known dry developing device can also be seen in the fact that the web-shaped blueprint material can only be threaded into the development chamber and the shielding chambers connected upstream and downstream thereof by opening the entire dry developing device. Apart from the fact that the known dry development device can only be made operational by laborious and time-consuming manipulations, the necessary opening of the cover closing the shielding chambers and the development chambers inevitably results in larger amounts of the gaseous or vaporous development medium in the ambient air. This not only causes noticeable and therefore unpleasant odor nuisance, but there is also the risk that the usability of the blueprint material still on the roll outside of the dry developing device is impaired.

Die Trockenentwicklungsvorrichtung nach der US-A-1 809 822 hat aber noch weitere Nachteile. So ist beispielsweise die der Entwicklungskammer vorgeschaltete Abschirmkammer ausschließlich in der gleichzeitig auch die Begrenzung der Entwicklungskammer bildenden Wand mit Dichtungsorganen ausgestattet, deren freie Begrenzungskanten bis auf die Führungsebene für das Lichtpausmaterial herabreicht. Andererseits weist die der Entwicklungskammer nachgeschaltete Abschirmkammer lediglich in ihrer von der Entwicklungskammer entfernten Wand entsprechende Dichtungsorgane auf. Weder die der Entwicklungskammer vorgeschaltete loch die der Entwicklungskammer nachgeschaltete Abschirmkammer steht mit einer Absaugkammer in Verbindung, so daß sich selbst bei völlig geschlossenem Gehäuse der Trockenentwicklungsvorrichtung mindestens in der nachgeschalteten Abschirmkammer die Konzentration des gas- bzw. dampfförmigen Entwicklungsmediums nach verhältnismäßig kurzer Zeit an diejenige der Entwicklungskammer angleicht. Lediglich zwischen der auslaßseitigen Abschirmkammer und der mit Abstand hinter dieser freiliegend angeordneten Transporttrommel befindet sich eine Absaugvorrichtung, deren Kammer jedoch in Richtung zur Transporttrommel hin offen ist. Daher ist deren Wirksamkeit stark beeinträchtigt, weil nämlich die Absaugwirkung nicht genügend stark ist, um das in das Lichtpausmaterial eingedrungene Entwicklungsmedium aus diesem abzuziehen.However, the dry developing device according to US-A-1 809 822 has further disadvantages. For example, the shielding chamber upstream of the development chamber is exclusively equipped with sealing elements in the wall that also forms the boundary of the development chamber, the free boundary edges of which extend down to the guide level for the blueprint material. On the other hand, the shielding chamber downstream of the development chamber has corresponding sealing members only in its wall remote from the development chamber. Neither the hole upstream of the development chamber nor the shielding chamber downstream of the development chamber is connected to a suction chamber, so that even when the housing of the dry development device is completely closed, the concentration of the gaseous or vaporous development medium, at least in the downstream shielding chamber, reaches that of the development chamber after a relatively short time aligns. A suction device is located only between the shielding chamber on the outlet side and the transport drum which is exposed at a distance behind it, but the chamber of which is open in the direction of the transport drum. Therefore, their effectiveness is severely impaired, because the suction effect is not strong enough to remove the development medium that has penetrated into the blueprint material.

Durch die NL-A-7 607 793 gehört eine Trockenentwicklungsvorrichtung zum Stand der Technik, bei der eine innerhalb eines Gehäuses angeordnete Transporttrommel für das lichtpausmaterial Verwendung findet. Auch sind bei dieser Trockenentwicklungs-Vorrichtung der Transporttrommel in zwei verschiedenen Umfangsbereichen Abschirmungen in Form von Lippendichtungen zugeordnet.NL-A-7 607 793 makes a dry developing device part of the prior art, in which a transport drum arranged inside a housing is used for the blueprint material. Shields in the form of lip seals are also assigned to the transport drum in two different circumferential areas in this dry development device.

Es ist aber offensichtlich, daß bei dieser bekannten Trockenentwicklungsvorrichtung die Transporttrommel nur mit dem kleineren Teilbereich ihrer Mantelfläche in der Entwicklungskammer liegt, während sich ihr größerer Mantelflächenteilbereich immer außerhalb der Entwicklungskammer befindet und demzufolge mit der Umgebungsluft in Kontaktberührung gelangt. Abgesehen davon bilden dort die Abschirmungen eine unmittelbare Abdichtung zwischen der Entwicklungskammer und der Transporttrommel, d. h., sie unterliegen einer dauernden Reibungsbeanspruchung durch die sich drehende Transporttrommel und können damit eine dauerhaft sichere Abdichtung naturgemäß nicht gewährleisten.However, it is obvious that in this known dry development device the transport drum lies only with the smaller partial area of its lateral surface in the development chamber, while its larger lateral surface partial area is always outside the development chamber and consequently comes into contact with the ambient air. Apart from that, the shields form a direct seal between the development chamber and the transport drum, i. that is, they are subject to constant frictional stress due to the rotating transport drum and cannot, of course, guarantee a permanently secure seal.

Durch die DE-A-2 523 228 ist eine Trockenentwicklungs-Vorrichtung für Lichtpausmaterial bekanntgeworden, bei der aus den der Entwicklungskammer vor- bzw. nachgeschalteten Abschirmkammern die das Entwicklungsmedium enthaltende Luft abgesaugt wird. Als Transportvorrichtung dienen hier Transportwalzen-Paare, die jeweils mit einem großen Teil ihrer Mantelfläche außerhalb der Abschirmkammer liegen und somit einen verhältnismäßig großen Anteil des in die Abschirmkammer gelangenden Entwicklungsmediums mit der Umgebungsluft in Kontaktberührung bringen. Auch hier ist also die Wirksamkeit der Abschirmkammern stark beeinträchtigt.From DE-A-2 523 228 a dry development device for blueprint material has become known, in which the air containing the development medium is extracted from the shielding chambers upstream or downstream of the development chamber. The transport device used here is a pair of transport rollers, each of which lies outside the shielding chamber with a large part of its outer surface and thus a relatively large proportion of the Ent entering the shielding chamber Bring the winding medium into contact with the ambient air. Here too, the effectiveness of the shielding chambers is severely impaired.

Zweck der Erfindung ist es, die geschilderten Nachteile der bekannten Trockenentwicklungsvorrichtungen zu vermeiden. Daher ist ihr das Ziel gesetzt, eine Trockenentwicklungs-Vorrichtung der gattungsgemäßen Art zu schaffen, die bei kompakter Bauart keinerlei bewegte Teile aufweist, welche mit der Umgebungsluft in Kontaktberührung gelangen können und die dabei außerdem noch eine gezielte Nachbehandlung des aus der hinteren Abschirmkammer austretenden Lichtpausmaterials im Sinne der Entfernung einer eventuell vorhandenen Restfeuchte und eines Entwicklermediums unterzogen werden kann.The purpose of the invention is to avoid the described disadvantages of the known dry development devices. Therefore, the goal is to create a dry development device of the generic type, which has no moving parts in a compact design, which can come into contact with the ambient air and also a targeted post-treatment of the blueprint material emerging from the rear shielding chamber in the In order to remove any residual moisture and developer medium that may be present.

Die Lösung dieser Aufgabe besteht nach der Erfindung im wesentlichen darin, daß die Transporttrommel in der Entwicklungskammer zwischen den ihr in verschiedenen Umfangsbereichen vor- bzw. nachgeschalteten Abschirmkammern mit ihrem gesamten Umfang eingeschlossen ist, daß dabei jede der Abschirmkammern durch mindestens eine zusätzliche Schirmfläche in mehrere hintereinanderliegende Räume unterteilt ist und sämtliche Schirmflächen mit freien Dichtkanten die Führungsebene für das Lichtpausmaterial berühren, daß weiterhin jede der Abschirmkammern mit allen ihren hintereinanderliegenden Räumen an je eine besondere Absaugkammer angeschlossen ist und daß in einer auslaufseiiigen Entgasungskammer eine weitere Transportvorrichtung für das Lichtpausmaterial angeordnet ist, deren der auslaufseitigen Abschirmkammer zugewendeter Umfangsbereich von einer undurchlässigen Wand umfaßt ist.The solution to this problem consists essentially in the fact that the transport drum is enclosed in the development chamber between the shielding chambers connected upstream or downstream in different circumferential areas with its entire circumference, so that each of the shielding chambers has at least one additional shielding surface in a row Rooms is divided and all screen surfaces with free sealing edges touch the guide level for the blueprint material, that each of the shielding chambers with all their rooms in series is connected to a special suction chamber and that another transport device for the blueprint material is arranged in an outlet-type degassing chamber, the outlet-side shielding chamber facing peripheral area is surrounded by an impermeable wall.

Durch diese Merkmale wird mit einem relativ geringen baulichen Aufwand eine Trockenentwicklungs-Vorrichtung für Lichtpausmaterial geschaffen, die trotz intensiver Behandlung des Lichtpausmaterials mit Entwicklungsmedium weitestgehend das Entweichen von Entwicklungsgas bzw. -dampf in die Umgebungsluft und daher unangenehme Geruchsbelästigungen verhindert. Dieser Effekt wird in besonderer Weise dadurch begünstigt, daß zwei hinsichtlich ihrer auf das Lichtpausmaterial einwirkenden Mitnehmerflächen völlig getrennte Transportvorrichtungen vorhanden sind, die in gegeneinander abgeschirmten Räumen rotieren und praktisch keinerlei mit der Umgebungsluft in Berührung kommende Oberflächenbereiche besitzen.These features create a dry development device for blueprint material with relatively little structural effort, which largely prevents the escape of development gas or steam into the ambient air and therefore unpleasant odors despite intensive treatment of the blueprint material with development medium. This effect is particularly favored by the fact that there are two completely separate transport devices with regard to their driving surfaces acting on the blueprint material, which rotate in rooms shielded from one another and have practically no surface areas which come into contact with the ambient air.

Ein wichtiges Weiterbildungsmerkmal wird nach der Erfindung auch darin gesehen, daß jede der Schirmflächen insgesamt aus flexiblem Material besteht. Dabei können die flexiblen Schirmflächen von Kunststoff-Folien gebildet werden, deren freie Begrenzungskanten nach Art von Lippendichtungen auf die Führungsebene herabreichen.An important feature of the further development according to the invention is also seen in the fact that each of the screen surfaces consists entirely of flexible material. The flexible screen surfaces can be formed from plastic films, the free boundary edges of which extend down to the guide level in the manner of lip seals.

Für einen hemmungsfreien Durchlauf des Lichtpausmaterials durch die Trockenentwicklungs-Vorrichtung ist es nach der Erfindung ferner wichtig, daß die Schirmflächen jeweils in Durchlaufrichtung des Lichtpausmaterials unter spitzen Winkeln gegen die Führungsebene geneigt gehalten sind.For an uninhibited passage of the blueprint material through the dry developing device, it is also important according to the invention that the screen surfaces are each inclined at acute angles in the direction of the blueprint material through the guide plane.

Nach einem anderen Ausgestaltungsmerkmal der Erfindung ist die Entgasungskammer durch die Transportvorrichtung in einen Überdruck-und einen Unterdruckbereich unterteilt, wobei eine Strömungsverbindung vom Überdruck- zum Unterdruckbereich besteht, welche durch die Wandung der Transportvorrichtung geführt ist.According to another design feature of the invention, the degassing chamber is divided by the transport device into an overpressure and a negative pressure area, there being a flow connection from the overpressure to the negative pressure area, which is led through the wall of the transport device.

Vorzugsweise kann auch die weitere Transportvorrichtung als Transporttrommel ausgebildet werden und beide Transporttrommeln können aus porösem Werkstoff bestehen, wobei die eine Transporttrommel von innen nach außen vom Entwicklungsmedium und die andere Transporttrommel ebenfalls von innen nach außen von einem Entgasungsmedium, z. B. Heißiuft, durchströmt ist.Preferably, the further transport device can be designed as a transport drum and both transport drums can be made of porous material, the one transport drum from the inside to the outside of the developing medium and the other transport drum also from the inside to the outside of a degassing medium, for. B. hot air, is flowed through.

Damit durch das Entgasungsmedium eine optimale Entfernung der Restfeuchte aus dem Lichtpausmaterial erreicht werden kann, hat es sich auch als nachahmenswert herausgestellt, die Transporttrommel der Entgasungskar,imer in ihrem dem Unterdruckbereich abgewendeten Abschnitt durch undurchlässige Leitwände und in ihrem dem Unterdruckbereich benachbarten Abschnitt durch durchlässige Leitwände zu begrenzen.So that an optimal removal of the residual moisture from the blueprint material can be achieved by the degassing medium, it has also been found to be imitative to close the transport drum of the degassing car, in its section facing away from the vacuum area through impermeable guide walls and in its section adjacent to the vacuum area through permeable guide walls limit.

Zum Zwecke einer baulich einfachen Ausgestaltung erweist es sich weiterhin als zweckmäßig, die Absaugkammern der Schirmflächen und den Unterdruckbereich der Entgasungskammer mit einer gemeinsamen Absaugvorrichtung in Verbindung zu bringen.For the purpose of a structurally simple configuration, it also proves to be expedient to connect the suction chambers of the screen surfaces and the negative pressure region of the degassing chamber to a common suction device.

Schließlich ist es auch noch zu empfehlen, die Trockenentwicklungs-Vorrichtung so aufzubauen, daß das Lichtpausmaterial in der Entwicklungskammer mit der Schichtseite an der Transporttrommel anliegend und in der Entgasungskammer mit der unbeschichteten Seite an derTransporttrommel anliegend zu führen.Finally, it is also advisable to construct the dry development device in such a way that the blueprint material is guided in the development chamber with the layer side against the transport drum and in the degassing chamber with the uncoated side against the transport drum.

Durch Anwendung dieser Maßnahme wird nämlich nicht nur eine Beschädigung der Schichtseite vor Beendigung des Entwicklungsvorganges vermieden und eine intensive Einwirkung des Entwicklungsmediums auf die Schichtseite erreicht, sondern der dem Entwicklungsvorgang nachgeschaltete Entgasungsvorgang findet in entgegengesetzter Wirkrichtung, also von der unbeschichteten Seite her durch das Lichtpausmaterial hindurch statt. Die das Entwicklungsmedium bindende Restfeuchte wird also gewissermaßen ausgetrieben.By using this measure, not only is damage to the layer side avoided before the end of the development process and an intensive influence of the development medium on the layer side is achieved, but the degassing process downstream of the development process takes place in the opposite direction, i.e. from the uncoated side through the blueprint material . The residual moisture that binds the development medium is, so to speak, expelled.

Das Wesen der Erfindung liegt hauptsächlich im vollständigen Einschließen der Transporttrommel in die Entwicklungskammer.The essence of the invention lies primarily in the complete containment of the transport drum in the development chamber.

Die einzige Figur der Zeichnung zeigt in schematisch vereinfachter Querschnittsdarstellung eine besonders vorteilhafte Bauform einer Trockenentwicklungs-Vorrichtung, die sich für die Behandlung blattförmigen Lichtpausmaterials eignet.The single figure of the drawing shows a schematically simplified cross-sectional representation of a particularly advantageous design of a dry development device which is suitable for the treatment of sheet-like blueprint material.

Die Trockenentwicklungs-Vorrichtung hat ein Gehäuse 1, welches an seiner, beispielsweise dem Belichtungsteil einer Lichtpausmaschine zugewendeten Seite mit einem Kanal 2 versehen ist, der eine Führungsebene 3 für das Lichtpausmaterial 4 hat.The dry development device has a housing 1 which is provided on its side, for example the exposure part of a blueprint machine, with a channel 2 which has a guide plane 3 for the blueprint material 4.

Der Kanal 2 mündet in eine im wesentlichen kreisquerschnittförmige Entwicklungskammer 5, in der eine drehantreibbare Transporttrommel 6 so gelagert ist, daß ihre Mantelfläche einen möglichst geringen Abstand von den die Entwicklungskammer 5 begrenzenden Wandungen 7 hat.The channel 2 opens into a substantially circular cross-sectional development chamber 5, in which a rotationally drivable transport drum 6 is mounted so that its lateral surface is as close as possible to the walls 7 delimiting the development chamber 5.

Der Entwicklungskammer 5 ist im Kanal 2 eine Abschirmkammer 8 vorgeordnet und andererseits ist ihrem Austrittsspalt 9 eine entsprechende Abschirmkammer 10 nachgeordnet.A shielding chamber 8 is arranged upstream of the development chamber 5 in the channel 2 and, on the other hand, a corresponding shielding chamber 10 is arranged downstream of its outlet gap 9.

Sowohl die Abschirmkammer 8 als auch die Abschirmkammer 10 wird von mehreren, beispielsweise drei, mit Abstand hintereinander liegenden Schirmflächen 11 bzw. 12 begrenzt, derart, daß jede Abschirmkammer zwei hintereinander liegende Teilräume 8', 8" bzw. 10', 10" besitzt.Both the shielding chamber 8 and the shielding chamber 10 are delimited by a plurality, for example three, of shielding surfaces 11 and 12 which are spaced one behind the other, in such a way that each shielding chamber has two partial spaces 8 ', 8 "and 10', 10" one behind the other.

Die Teilräume 8', 8" der Abschirmkammer 8 stehen dabei an ihrem oberen Ende mit einer Absaugkammer 13 in Verbindung, während die Teilräume 10', 10" der Abschirmkammer 10, ebenfalls an ihrem oberen Ende, in eine Absaugkammer 14 münden.The subspaces 8 ', 8 "of the shielding chamber 8 are connected at their upper end to a suction chamber 13, while the subspaces 10', 10" of the shielding chamber 10, likewise at their upper end, open into a suction chamber 14.

Die Schirmflächen 11 bzw. 12 der Abschirmkammern 8 bzw. 10 bestehen vorzugsweise aus flexiblem Material und sind an ihren aufrechten Seitenkanten und an ihrer Oberkante gasdicht eingespannt.The shield surfaces 11 and 12 of the shielding chambers 8 and 10 are preferably made of flexible material and are clamped gas-tight on their upright side edges and on their upper edge.

Die freien Unterkanten der Schirmflächen 11 liegen nach Art von Lippendichtungen auf der Führungsebene 3 des Kanals 2 auf, während die freien Unterkanten der Schirmflächen 12 in entsprechender Weise mit einer Leitfläche 15 in Kontaktberührung gehalten sind. Diese Leitfläche 15 schließt sich an den Austrittsspalt 9 der Entwicklungskammer 5 an und führt in eine Entgasungskammer 16 hinein, in der eine weitere, drehangetriebene Transporttrommel 17 lagert. Die Transporttrommel 17 besteht, ebenso wie die Trommel 6, aus porösem Material und wird annähernd auf ihrem ganzen Umfang mit möglichst geringem Abstand von Leitwänden 18 umgeben. Die rechte Teilschale 18' dieser Leitwandungen 18 besteht dabei aus undurchlässigem Material, während deren linke Teilschale 18" gasdurchlässig ausgeführt ist..The free lower edges of the screen surfaces 11 lie in the manner of lip seals on the guide plane 3 of the channel 2, while the free lower edges of the screen surfaces 12 are held in contact with a guide surface 15 in a corresponding manner. This guide surface 15 adjoins the outlet gap 9 of the development chamber 5 and leads into a degassing chamber 16 in which a further, rotationally driven transport drum 17 is mounted. The transport drum 17, like the drum 6, is made of porous material and is almost completely surrounded by guide walls 18 with the smallest possible distance. The right-hand partial shell 18 'of these guide walls 18 consists of impermeable material, while the left-hand partial shell 18' 'is made gas-permeable.

Auch innerhalb der Transporttrommel 17 ist über den von der Teilschale 18' abgedeckten Abschnitt hinweg eine undurchlässige Abschirmung 19 ortsfest gehalten.An impermeable shield 19 is also held stationary within the transport drum 17 over the section covered by the partial shell 18 '.

Die aus porösem Werkstoff bestehende Transporttrommel 17 trennt die Entgasungskammer 16 in einen Überdruckbereich 20 und einen Unterdruckbereich 21.The transport drum 17 made of porous material separates the degassing chamber 16 into an overpressure area 20 and a underpressure area 21.

Der Überdruckbereich 20 der Entgasungskammer 16 wird dabei einerseits vom Hohlraum und andererseits von den porösen Wandungen der Transporttrommel 17 gebildet, an die sich über die durchlässige Teilschale 18" der Unterdruckbereich 21 anschließt.The overpressure area 20 of the degassing chamber 16 is formed on the one hand by the cavity and on the other hand by the porous walls of the transport drum 17, to which the underpressure area 21 is connected via the permeable partial shell 18 ″.

Der Unterdruckbereich 21 der Entgasungskammer 16 sowie die Absaugkammern 13 und 14 der Abschirmkammern 8 und 10 stehen mit einer gemeinsamen Absaugvorrichtung in Verbindung.The vacuum region 21 of the degassing chamber 16 and the suction chambers 13 and 14 of the shielding chambers 8 and 10 are connected to a common suction device.

Beim Betrieb der Trockenentwicklungs-Vorrichtung wird das Lichtpausmaterial 4 auf der Führungsebene 3 des Kanals 2 unter den Unterkanten der Schirmflächen 11 hindurch in die Entwicklungskammer 5 eingeführt. Dort wird es an seiner Schichtseite von den Mantelflächen der Transporttrommel 6 erfaßt und entlang den Wandungen 7 der Entwicklungskammer 5 bewegt. Dabei wirkt das durch die porösen Wandungen der Transporttrommel 6 radial nach außen tretende gas- bzw. dampfförmige Entwicklungsmedium, z. B. Ammoniak, unmittelbar auf die Schichtseite des Lichtpausmaterials ein und fixiert darauf die unbelichtet gebliebenen Abbildungsbereiche. Auf seinem Weg durch die Entwicklungskammer 5 tritt dann das entwickelte Lichtpausmaterial durch den Austrittsspalt 9 auf die Leitfläche 15, auf der es dann unter den daraufliegenden Kanten der Schirmflächen 12 hindurchgeführt wird..During operation of the dry development device, the blueprint material 4 is introduced into the development chamber 5 on the guide plane 3 of the channel 2 under the lower edges of the screen surfaces 11. There it is gripped on its layer side by the lateral surfaces of the transport drum 6 and moved along the walls 7 of the development chamber 5. This acts through the porous walls of the transport drum 6 radially outward gaseous or vaporous development medium, for. B. ammonia, directly on the layer side of the blueprint material and fixes the unexposed imaging areas. On its way through the development chamber 5, the developed blueprint material then passes through the outlet gap 9 onto the guide surface 15, on which it is then passed under the edges of the screen surfaces 12 lying thereon.

Durch die in den beiden Abschirmkammern 8 und 10 aufrechterhaltene Saugwirkung wird verhindert, daß Entwicklungsmedium z. P. Ammoniakgase bzw. Dämpfe aus der Entwicklungskammer 5 heraustreten.The suction effect maintained in the two shielding chambers 8 and 10 prevents the development medium from e.g. P. Ammonia gases or vapors emerge from the development chamber 5.

Die in das Lichtpausmaterial selbst eingedrungene, verhältnismäßig geringfügige Menge von Entwicklungsmedium wird anschließend in der Entgasungskammer 16 ausgetrieben, während das Lichtpausmaterial 14 von der Transporttrommel 17 erfaßt und entlang der durchlässigen Teilschale 18" bewegt wird. Hierbei ist das Lichtpausmaterial mit seiner Schichtseite von der Mantelfläche der Transporttrommel 17 abgewendet. Das dem Überdruckbereich 20 der Entgasungskammer 16 zugeführte Entgasungsmedium, bspw. Heißluft, wird radial nach auswärts durch die poröse Trommelwandung getrieben, und zwar konzentriert durch denjenigen Trommelabschnitt, der sich jeweils im Bereich der durchlässigen Teilschale 18" bewegt. Dabei durchdrängt das Entgasungsmedium das Lichtpausmaterial 4 von seiner Rückseite her und treibt die darin enthaltene Restfeuchte und mit ihr auch das restliche Entwicklungsmedium in den Untgerdruckbereich 21 der Entgasungskammer 16 aus, und zwar durch die beispielsweise aus einer Sieb- oder Lochplatte gebildete Teilschale 18".The relatively small amount of development medium which has penetrated into the blueprint material itself is then expelled in the degassing chamber 16, while the blueprint material 14 is gripped by the transport drum 17 and moved along the permeable partial shell 18 ". Here, the blueprint material is with its layer side from the outer surface of the Transport drum 17. The degassing medium supplied to the overpressure region 20 of the degassing chamber 16, for example hot air, is driven radially outward through the porous drum wall, specifically concentrated by that drum section which moves in the region of the permeable partial shell 18 ″. The degassing medium penetrates the blueprint material 4 from its rear and drives the residual moisture contained therein and with it also the remaining development medium into the negative pressure region 21 of the degassing chamber 16, specifically through the partial shell 18 ″ formed, for example, from a sieve or perforated plate.

Nachdem das Lichtpausmaterial 4 die Entgasungskammer 16 passiert hat, tritt es oben durch den Spalt 22 aus der Entwicklungsvorrichtung heraus.After the blueprint material 4 has passed the degassing chamber 16, it emerges from the top of the developing device through the gap 22.

Eine weitere Ausgestaltung der vorstehend beschriebenen Entwicklungsvorrichtung besteht noch darin, daß die die Abschirmkammern 8 und 10 begrenzenden bzw. in mehrere Teilräume 8', 8" bzw. 10', 10" unterteilenden Schirmflächen 11 bzw. 12 in Durchlaufrichtung des Lichtpausmaterials 14 gesehen spitzwinklig gegen die Führungsebene 3 bzw. die Leitfläche 15 geneigt gehalten sind, so daß sie den Durchlauf des Lichtpausmaterials4 nicht beeinträchtigen.A further embodiment of the development device described above consists in the fact that the shielding surfaces 11 delimiting the shielding chambers 8 and 10 or dividing them into a plurality of partial spaces 8 ', 8 "or 10', 10" or 12, viewed in the direction of passage of the blueprint material 14, are held at an acute angle to the guide plane 3 or the guide surface 15, so that they do not impair the passage of the blueprint material 4.

Als vorteilhaft hat es sich ferner erwiesen, daß das Lichtpausmaterial 4 innerhalb der Entwicklungsvorrichtung eine im wesentlichen S-förmige Transportbahn durchläuft, so daß es zunächst an seiner Schichtseite mit der ersten Transporttrommel 6 und dann mit seiner unbeschichteten Seite von der zweiten Transporttrommel 17 erfaßt wird.It has also proven to be advantageous that the blueprint material 4 passes through an essentially S-shaped transport path within the developing device, so that it is first gripped by the first transport drum 6 on its layer side and then by the second transport drum 17 with its uncoated side.

Schließlich ist es auch noch zweckmäßig, wenn die beiden Absaugkammern 13 und 14 sowie der Unterdruckbereich 21 der Entgasungskammer 16 über getrennte Abschlußstutzen mit der (nicht gezeigten) Absaugvorrichtung in Verbindung stehen.Finally, it is also expedient if the two suction chambers 13 and 14 and the negative pressure region 21 of the degassing chamber 16 are connected to the suction device (not shown) via separate connecting pieces.

Claims (9)

1. Apparatus for the dry development of print material by developing media in gas or vapour form, consisting of a development chamber with a drum which effects the deeding of the print materia! and also screening chambers respectively arranged preceding and following the development chamber and defined by two fixedly held screen surfaces following one another in spaced relation and an additional suction extraction chamber for the developing gases or vapours arranged on the outlet side, that screen surface of the two screening chambers which is respectively disposed at the rear in the direction of travel of the print material making contact, by means of a free sealing edge, with the guiding plane or surface for the print material, characterised in that the feed drum (6) is enclosed in the development chamber (5) over its entire circumference between the screening chambers (8 and 10) connected before and following it in different circumferential zones, that each of the screening chambers (8 and 10) is subdivided by at least one additional screen surface (11 or 12) into several successively disposed spaces (8', 8" and 10', 10", respectively) and all screen surfaces (11 or 12) make contact, by means of free sealing edges, with the guide plane or surface (3 or 15) for the print material (4), that in addition each of the screening chambers (8 or 10) is connected with all of its successively disposed spaces (8', 8" or 10', 10") to a separate exhaustion chamber (13 or 14), and that a gas-extraction chamber (16) on the outlet side has arranged therein an additional feeding means (17) for the print material, and of which the peripheral region facing the screening chamber (10) on the outlet side is enclosed by an impermeable wall (18').
2. Apparatus according to Claim 1, characterised in that each of the screen surfaces (11 or 12) is made entirely of flexible material.
3. Apparatus according to Claims 1 and 2, characterised in that the flexible screen surfaces (11 or 12) consist of synthetic plastics foils, of which the free bounding edges extend in the form of lip seals as far as the guiding plane (3 or 15).
4. Developing apparatus according to Claims 1 to 3, characterised in that the screen surfaces (11 or 12) are each held at an inclination and at an acute angle with respect to the guiding plane (3 or 15) in the direction of travel of the print material (4).
5. Developing apparatus according to Claims 1 to 4, characterised in that the gas-extraction chamber (16) is subdivided by the feed means (17) into an excess pressure zone (20) and a reduced pressure zone (21), a flow cumminica- tion existing from the excess pressure zone (20) to the reduced pressure zone (21), which communication is through the wall of the feeding means (17).
6. Developing apparatus according to Claims 1 to 5, characterised in that the feed means (17) are also constructed as feed drums and that both feed drums (6 and 17) consist of porous material, the one feed drum (6) being traversed outwardly from inside by the developing medium and the other feed drum (17) being likewise traversed outwardly from inside by a gas-extraction medium, e.g. hot air.
7. Developing apparatus according to Claims 1 to 6, characterised in that the feed drum (17) of the gasextraction chamber (16) is defined in its section away from the reduced pressure zone (21) by impervious guide walls (18', 19) and in its section adjoining the reduced pressure zone (21) by pervious guide walls (18").
8. Developing apparatus according to Claims 1 to 7, characterised in that the suction chambers (13 and 14) of the screen surfaces (11 and 12, respectively) and the reduced pressure zone (21) of the gas-extraction chamber (16) are in communication with a common suction or exhaustion means (23, 24, 25).
9. Method of operating a developing apparatus according to Claims 1 to 8, characterised in that the print material (4) is guided in the developing chamber (5) with the coating side bearing on the feed drum (6) and in the gas-extraction chamber (16) with the uncoated side bearing on the feed drum (17).
EP79101297A 1978-05-09 1979-04-30 Device for the dry-development of photosensitive material Expired EP0005252B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2820133 1978-05-09
DE19782820133 DE2820133A1 (en) 1978-05-09 1978-05-09 DEVICE FOR DRY DEVELOPMENT OF LIGHT MATERIAL

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EP0005252A1 EP0005252A1 (en) 1979-11-14
EP0005252B1 true EP0005252B1 (en) 1982-05-12

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EP79101297A Expired EP0005252B1 (en) 1978-05-09 1979-04-30 Device for the dry-development of photosensitive material

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US (1) US4236805A (en)
EP (1) EP0005252B1 (en)
DE (2) DE2820133A1 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6546691B2 (en) 2000-12-13 2003-04-15 Kronospan Technical Company Ltd. Method of laying panels
JP4222926B2 (en) * 2002-09-20 2009-02-12 エーエスエムエル ネザーランズ ビー．ブイ． Device inspection

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1809822A (en) * 1927-10-26 1931-06-16 Dietzgen Eugene Co Developing apparatus
US2240409A (en) * 1937-04-26 1941-04-29 Wood Mallabar And Company Ltd Apparatus for developing sensitized layers
US2431041A (en) * 1944-01-06 1947-11-18 Gen Aniline & Film Corp Mechanism for developing printed materials
CH329409A (en) * 1957-02-28 1958-04-30 Mueller Walther Method and device for dry development of exposed heliographic papers
SE329409B (en) * 1969-05-23 1970-10-12 Asea Ab
US3653242A (en) * 1969-06-09 1972-04-04 Matix Corp Apparatus for treating a continuous body under pressure
US3720150A (en) * 1971-02-16 1973-03-13 Memorex Corp Diazo film developer
US4166728A (en) * 1973-07-26 1979-09-04 Hoechst Aktiengesellschaft Process for conducting ammonia in copying machines
DE2438544C3 (en) * 1974-08-10 1979-08-02 Bayer Ag, 5090 Leverkusen Process for the production of dyed threads from fully aromatic polyamides
GB1550479A (en) * 1975-05-26 1979-08-15 Hoechst Ag Development of diazotype materials
US4056824A (en) * 1975-09-03 1977-11-01 Ricoh Company, Ltd. Developing apparatus for diazo copying machine
US4059409A (en) * 1976-03-12 1977-11-22 Blu-Ray, Incorporated Apparatus for eliminating ammonia fumes emanating from diazo copiers
US4109268A (en) * 1976-04-15 1978-08-22 Hoechst Aktiengesellschaft Apparatus for developing a photosensitive material using a vaporous ammonia-containing developer
DE2726240C2 (en) * 1977-06-10 1978-10-26 Hoechst Ag, 6000 Frankfurt Process and device for the dry development of two-component diazotype material

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DE2820133A1 (en) 1979-11-15
DE2962777D1 (en) 1982-07-01
EP0005252A1 (en) 1979-11-14
US4236805A (en) 1980-12-02

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