EP0129460A1 - Tank for processing offset plates by ultrasound - Google Patents

Tank for processing offset plates by ultrasound Download PDF

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Publication number
EP0129460A1
EP0129460A1 EP84401115A EP84401115A EP0129460A1 EP 0129460 A1 EP0129460 A1 EP 0129460A1 EP 84401115 A EP84401115 A EP 84401115A EP 84401115 A EP84401115 A EP 84401115A EP 0129460 A1 EP0129460 A1 EP 0129460A1
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EP
European Patent Office
Prior art keywords
tank
bath
opening
plates
tank according
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.)
Ceased
Application number
EP84401115A
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German (de)
French (fr)
Inventor
Mario Ferrante
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.)
PHOTOMECA SA
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PHOTOMECA SA
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Publication date
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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
    • G03D3/02—Details of liquid circulation
    • G03D3/04—Liquid agitators

Definitions

  • the subject of the invention is a tank intended for the automatic development in a suitable bath of positive and negative plates covered on at least one of their faces with a photosensitive layer, as is used in printing and particularly in offset.
  • An advantageous method consists in circulating the plates in the bath while the latter is agitated by at least one ultrasonic generator.
  • the plates are sometimes thin and relatively small in size; we can therefore make them follow without difficulty a curved passageway through the bath. But there are also rather rigid and large plates which it is impossible to curl.
  • the bath used. has as low a volume as possible; Similarly, it is compulsory to avoid any loss of the bath when it is passed through by a rigid plate which cannot be curved.
  • the main purpose of the invention is to provide a treatment tank in. a bath of minimum volume, agitated by ultrasound, of plates with photosensitive layer, flexible or rigid, crossing the bath without being curved, without loss of this bath.
  • This goal is achieved from a tank intended to contain a developer bath for the development of photosensitive layer plates; equipped with an ultrasonic generator agitating this bath in which according to the invention there is an elongated rectilinear corridor of circulation of length less than the shortest plate limited by them said bath a lower wall and an upper wall containing between / without air pocket with an inlet opening at one end and an outlet opening at the opposite end, at least one flexible lip seal being arranged in one and in the other opening; support means are mounted, if necessary, between the lower wall and the upper wall at the level of the two openings, a bath tank is connected to the elongated corridor and placed in communication with the latter by a communication opening made in one any of the upper wall and the lower wall, this reservoir containing the ultrasonic generator.
  • the bath tank is mounted directly above the upper wall or directly below the lower wall.
  • the support means are spaced by free intervals in the direction of circulation of the plates through the bath.
  • the lower wall is shaped like a container having along its edge a horizontal peripheral flange in the use position
  • the upper wall is shaped like a container that is shallower than the lower container having also along its edge a horizontal peripheral flange in position of use
  • the two tanks are assembled one on the other, a seal with flexible lip being interposed between the two peripheral flanges in the zone of the inlet and outlet area and a solid material seal is clamped between the two flanges outside of these areas.
  • the bath tank is an integral part of one or the other tank by means of deep drawing or deepening formed in a part of this tank, preferably the downstream part in the direction of circulation of the plates.
  • a bath tank is an integral part of one and the other tank.
  • the supply to the tank takes place through a supply pipe which opens at the top of the upper tank.
  • Support means are placed in the inlet opening and in the outlet opening, on the flange of the lower tank, and the lip seal is mounted between the peripheral flange of the upper tank and the support means. of each opening.
  • the tank 1 illustrated in FIGS. 1 and 2 has an elongated rectilinear passage 2 for circulation of plates 3 to be treated, limited by a lower wall 4 and an upper wall 5; these two walls 4, 5 also limit between them an inlet opening 6 at one end and an outlet opening 7 at the opposite end.
  • the distance between the two openings 6, 7 is chosen to be less than the length of the shortest plate to be treated.
  • a first pair 8 of two drive rollers is placed opposite the inlet opening-6, parallel to it and a second pair 9 of drive rollers is placed in a similar manner opposite the outlet opening 7. Any plate 3 to be treated is engaged in the first pair 8 of rollers to be propelled by these through the inlet opening 6, then along the corridor 2, to take the outlet opening 7 and be gripped by the second pair of rollers 9.
  • support means 10 are arranged in the elongated corridor 2, with a spacing in the direction of movement of the plates 3.
  • These means 10 can be constituted by a simple plane carrier plate, or by a pleated or curved plate 7 ′′ so that it comes into contact only by transverse lines with the plates 3, or even by free rotating cylinders mounted transversely to the elongated corridor 2.
  • support means 10 constituted by a simple flat support plate are arranged in the inlet opening 6 and in the outlet opening 7 to provide better guidance at the inlet and at the outlet and to provide a greater bearing surface for seals as will be explained later.
  • the elongated corridor 2 is ° placed in communication with a bath tank 11; the communication takes place through a communication opening 12 preferably formed in the upper 5 and lower 4 walls, either in only one of these walls or in both, in their part close to the outlet opening 7.
  • a ultrasonic generator 13 is arranged in the bath tank 11.
  • the communication opening 12 is provided in the upper wall 5.
  • a tank according to the invention is advantageously constituted by a lower tank having along its upper edge an outer peripheral flange 14 which is horizontal in the position of use.
  • an upper container which is generally less deep than the lower container, also having an external peripheral flange 15 which is horizontal in the position of use. It is even possible, as can be seen in FIG. 1, that the upper wall 5 and the flange 14 are located in the same plane in the front part which follows the entry opening 6.
  • the bath tank 11 appears following a deep-drawing or deepening in the rear part. It is therefore easy to reveal the bath tank 11 either on the upper tank (FIG. 1) which constitutes the upper wall 5 of the elongated channel 2, or on the lower tank (FIG. 3) which constitutes the lower wall 4, or on one and the other tray, on the two walls 4 and 5 of the elongated corridor 2 ( Figure 4).
  • a tank 1 with one or two bath tanks 11, by assembling a lower tank with an upper tank set in opposite directions, using their peripheral flanges 14, 15, compressing them by means of bolts 1.6 , a seal 17 made of solid material, outside the zones of the inlet 6 and outlet 7 openings.
  • a seal 18 with elastic lip 19 is placed.
  • this seal 18 is fixed , for example by means of an adhesive, to the collar 15 of the upper tank.
  • the elastic lip 19 then rests on the collar. 14 of the lower tank.
  • two openings 6, 7 the lips 19 are directed in the direction of circulation of the plates 3 which lift them when entering and leaving the bath.
  • the elongated corridor 2 is completely filled with bath between the two walls 4, 5 without air volume.
  • the tank 1 comprises only one bath tank 11 incorporated in the upper tank (FIG. 1)
  • the free level 20 of the bath can be in this tank and kept constant by means of a level detector 21.
  • the arrival of the revealing bath is then made at the lower part of the tank 11, by a tube 22.
  • the tank 1 comprises two tanks 11, the upper one and the 'other lower ( Figure 4); the free level 20, the level detector 21 and the supply pipe 22 are located on the upper tank.
  • the tank 1 comprises a single lower tank 11 (FIG. 3)
  • the tubing 22 for the arrival of the bath ends at the upper wall 5 of the tank.
  • a drain pipe 23 is provided which starts from the lowest point of the lower tank or of the lower tank, when it exists, in the part of the tank close to the outlet opening 7.
  • the ultrasound generator. 13 is commercially available. It is mounted in one or the other of the bath tanks 11, or in the two tanks 11 when it is envisaged to treat plates provided with a photosensitive layer on their two opposite faces.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Photographic Processing Devices Using Wet Methods (AREA)

Abstract

Un couloir rectiligne allongé (2) est limité par une paroi inférieure (4) constituée par un bac à collerette périphérique (14) et par une paroi supérieure (5) constituée par un bac inversé à collerette périphérique (15), un joint d'étanchéité (18) à lèvre élastique (19) étant tenu entre des ouvertures d'entrée (16) et de sortie (7), un réservoir de bain (11) étant formé dans l'un des bacs pour contenir un générateur d'ultrasons (13), de sorte que les plaques à traiter (3) propulsées par des paires de cylindres (8,9) traversent en ligne droite le bain révélateur dont le volume est minimum.

Figure imgaf001
An elongated rectilinear passage (2) is limited by a lower wall (4) constituted by a container with peripheral flange (14) and by an upper wall (5) constituted by an inverted tank with peripheral flange (15), a gasket seal (18) with elastic lip (19) being held between inlet (16) and outlet (7) openings, a bath tank (11) being formed in one of the tanks to contain an ultrasonic generator (13), so that the plates to be treated (3) propelled by pairs of cylinders (8, 9) cross in a straight line the revealing bath whose volume is minimum.
Figure imgaf001

Description

L'invention a pour objet une cuve destinée au développement automatique dans un bain convenable des plaques positives et négatives recouvertes sur une au moins de leurs faces d'une couche photosensible, comme on en utilise en imprimerie et particulièrement en offset.The subject of the invention is a tank intended for the automatic development in a suitable bath of positive and negative plates covered on at least one of their faces with a photosensitive layer, as is used in printing and particularly in offset.

Quand la couche photosensible d'une telle plaque a été soumise à un rayonnement approprié qui a eu pour effet de la durcir ou de la ramollir dans des zonés non protégées du rayonnement, le développement a pour but d'éliminer les parties de la couche qui ne serviront pas à l'impression.When the photosensitive layer of such a plate has been subjected to appropriate radiation which has had the effect of hardening or softening it in areas not protected from radiation, the development is aimed at eliminating the parts of the layer which will not be used for printing.

Un procédé avantageux consiste à faire circuler les plaques dans le bain pendant que ce dernier est agité par au moins un générateur d'ultrasons. Les plaques sont parfois minces et de dimensions relativement restreintes ; on peut donc leur faire suivre sans difficulté un chemin de passage incurvé à travers le bain. Mais il existe aussi des plaques plutôt rigides et de grandes-dimensions qu'il est impossible d'incurver.An advantageous method consists in circulating the plates in the bath while the latter is agitated by at least one ultrasonic generator. The plates are sometimes thin and relatively small in size; we can therefore make them follow without difficulty a curved passageway through the bath. But there are also rather rigid and large plates which it is impossible to curl.

En outre, il est souhaitable que le bain utilisé. possède un volume aussi faible que possible ; de même il est obligatoire d'éviter toute perte du bain quand on le fait traverser par une plaque rigide qui ne peut pas être incurvée.In addition, it is desirable that the bath used. has as low a volume as possible; Similarly, it is compulsory to avoid any loss of the bath when it is passed through by a rigid plate which cannot be curved.

L'invention a pour but principal d'apporter une cuve de traitement dans. un bain de volume minimum, agité par des ultrasons, de plaques à couche photosensible, souples ou rigides, traversant le bain sans être incurvées, sans perte de ce bain.The main purpose of the invention is to provide a treatment tank in. a bath of minimum volume, agitated by ultrasound, of plates with photosensitive layer, flexible or rigid, crossing the bath without being curved, without loss of this bath.

On atteint ce but, à partir d'une cuve destinée à contenir un bain de révélateur pour le développement des plaques à couche photosensible; équipée d'un générateur d'ultrasons agitant ce bain dans laquelle selon l'invention il existe un couloir rectiligne allongé de circulation de longueur inférieure à la plaque la moins longue limité par elles ledit bain une paroi inférieure et une paroi supérieure contenant entre/ sans poche d'air avec une ouverture d'entrée à une extrémité et une ouverture de sortie à l'extrémité opposée, au moins un joint d'étanchéité à lèvre souple étant disposé dans l'une et dans l'autre ouverture ; des moyens de soutien sont montés, si nécessaire, entre la paroi inférieure et la paroi supérieure au niveau des deux ouvertures, un réservoir de bain est raccordé au couloir allongé et mis en communication avec ce dernier par une ouverture de communication ménagée dans l'une quelconque de la paroi supérieure et de la paroi inférieure, ce réservoir contenant le générateur d'ultrasons.This goal is achieved from a tank intended to contain a developer bath for the development of photosensitive layer plates; equipped with an ultrasonic generator agitating this bath in which according to the invention there is an elongated rectilinear corridor of circulation of length less than the shortest plate limited by them said bath a lower wall and an upper wall containing between / without air pocket with an inlet opening at one end and an outlet opening at the opposite end, at least one flexible lip seal being arranged in one and in the other opening; support means are mounted, if necessary, between the lower wall and the upper wall at the level of the two openings, a bath tank is connected to the elongated corridor and placed in communication with the latter by a communication opening made in one any of the upper wall and the lower wall, this reservoir containing the ultrasonic generator.

De préférence, le réservoir de bain est monté directement au-dessus de la paroi supérieure ou directement en-dessous de la paroi inférieure.Preferably, the bath tank is mounted directly above the upper wall or directly below the lower wall.

De préférence aussi, les moyens de soutien sont espacés par des intervalles libres dans le sens de circulation des plaques à travers le bain.Preferably also, the support means are spaced by free intervals in the direction of circulation of the plates through the bath.

Selon un mode de réalisation préféré de l'invention, la paroi inférieure est conformée comme un bac ayant le long de son bord une collerette périphérique horizontale en position d'utilisation, la paroi supérieure est conformée comme un bac moins profond que le bac inférieur ayant aussi le long de son bord une collerette périphérique horizontale en position d'utilisation, les deux bacs sont assemblés l'un sur l'autre, un joint d'étanchéité à lèvre souple étant interposé entre les deux collerettes périphériques dans la zone de l'entrée et dans la zone de sortie et un joint d'étanchéité en matière pleine est serré entre les deux collerettes en dehors de ces zones.According to a preferred embodiment of the invention, the lower wall is shaped like a container having along its edge a horizontal peripheral flange in the use position, the upper wall is shaped like a container that is shallower than the lower container having also along its edge a horizontal peripheral flange in position of use, the two tanks are assembled one on the other, a seal with flexible lip being interposed between the two peripheral flanges in the zone of the inlet and outlet area and a solid material seal is clamped between the two flanges outside of these areas.

Le réservoir de bain fait partie intégrante de l'un ou de l'autre bac grâce à un emboutissage ou un formage plus profond réalisé dans une partie de ce bac, de préférence la partie aval dans le sens de circulation des plaques.The bath tank is an integral part of one or the other tank by means of deep drawing or deepening formed in a part of this tank, preferably the downstream part in the direction of circulation of the plates.

Selon une variante de réalisation, un réservoir de bain fait partie intégrante de l'un et de l'autre bac.According to an alternative embodiment, a bath tank is an integral part of one and the other tank.

Quand le réservoir de bain fait partie intégrante du bac inférieur, l'alimentation de la cuve a lieu par un tuyau d'alimentation qui débouche au sommet du bac supérieur.When the bath tank is an integral part of the lower tank, the supply to the tank takes place through a supply pipe which opens at the top of the upper tank.

Des moyens de soutien sont placés dans l'ouverture d'entrée et dans l'ouverture de sortie, sur la collerette du bac inférieur, et le joint d'étanchéité à lèvre est monté entre la collerette périphérique du bac supérieur et le moyen de soutien de chaque ouverture.Support means are placed in the inlet opening and in the outlet opening, on the flange of the lower tank, and the lip seal is mounted between the peripheral flange of the upper tank and the support means. of each opening.

On donnera maintenant, sans intention limitative et sans exclure aucune variante, une description d'un exemple de réalisation. On se reportera aux dessins annexés dans lesquels :

  • - la figure 1 est une vue en coupe par un plan vertical passant par l'axe longitudinal d'un bac de développement conforme à l'invention,
  • - la figure 2 est une vue en coupe selon II-II de la figure 1,
  • - la figure 3 est une vue en coupe analogue à la figure 1 d'une première variante de réalisation,
  • - la figure 4 est une vue en coupe analogue à la figure 1 d'une deuxième variante de l'invention.
We will now give, without limiting intention and without excluding any variant, a description of an exemplary embodiment. Reference is made to the appended drawings in which:
  • FIG. 1 is a sectional view through a vertical plane passing through the longitudinal axis of a development tank according to the invention,
  • FIG. 2 is a sectional view along II-II of FIG. 1,
  • FIG. 3 is a sectional view similar to FIG. 1 of a first alternative embodiment,
  • - Figure 4 is a sectional view similar to Figure 1 of a second variant of the invention.

La cuve 1 illustrée par les figures 1 et 2 présente un couloir rectiligne allongé 2 de circulation de plaques 3 à traiter, limité par une paroi inférieure 4 et une paroi supérieure 5 ; ces deux parois 4, 5 limitent aussi entre elles une ouverture d'entrée 6 à une extrémité et une ouverture de sortie 7 à l'extrémité opposée. La distance qui sépare les deux ouvertures 6, 7 est choisie à une valeur inférieure à la longueur de la plaque la plus courte à traiter. En dehors de la cuve 1 une première paire 8 de deux rouleaux d'entraînement est placée en face de l'ouverture d'entrée-6, parallèlement à celle-ci et une seconde paire 9 de rouleaux d'entraînement est placée de manière analogue en face de l'ouverture de sortie 7. Toute plaque 3 à traiter est engagée dans la première paire 8 de rouleaux pour être propulsée par ceux-ci à travers l'ouverture d'entrée 6, puis le long du couloir 2, pour emprunter l'ouverture de sortie 7 et être saisie par la seconde paire de rouleaux 9.The tank 1 illustrated in FIGS. 1 and 2 has an elongated rectilinear passage 2 for circulation of plates 3 to be treated, limited by a lower wall 4 and an upper wall 5; these two walls 4, 5 also limit between them an inlet opening 6 at one end and an outlet opening 7 at the opposite end. The distance between the two openings 6, 7 is chosen to be less than the length of the shortest plate to be treated. Outside the tank 1 a first pair 8 of two drive rollers is placed opposite the inlet opening-6, parallel to it and a second pair 9 of drive rollers is placed in a similar manner opposite the outlet opening 7. Any plate 3 to be treated is engaged in the first pair 8 of rollers to be propelled by these through the inlet opening 6, then along the corridor 2, to take the outlet opening 7 and be gripped by the second pair of rollers 9.

De préférence, des moyens de soutien 10 sont disposés dans le couloir allongé 2, avec un espacement dans le sens de circulation des plaques 3. Ces moyens 10 peuvent être constitués par une simple plaque portéuse plane, ou par une plaque plissée ou incurvée7«pour qu'elle n'entre en contact que par des lignes transversales avec les plaques 3, ou encore par des cylindres libres en rotation montés transversalement au couloir allongé 2. Dans l'exemple décrit ici, des moyens de soutien 10 constitués par une simple plaque porteuse plane sont disposés dans l'ouverture d'entrée 6 et dans l'ouverture de sortie 7 pour offrir un meilleur guidage à l'entrée et à la sortie et pour procurer une plus grande surface d'appui à des joints d'étanchéité comme on l'expliquera plus loin.Preferably, support means 10 are arranged in the elongated corridor 2, with a spacing in the direction of movement of the plates 3. These means 10 can be constituted by a simple plane carrier plate, or by a pleated or curved plate 7 ″ so that it comes into contact only by transverse lines with the plates 3, or even by free rotating cylinders mounted transversely to the elongated corridor 2. In the example described here, support means 10 constituted by a simple flat support plate are arranged in the inlet opening 6 and in the outlet opening 7 to provide better guidance at the inlet and at the outlet and to provide a greater bearing surface for seals as will be explained later.

Le couloir allongé 2 est°mis en communication avec un réservoir de bain 11 ; la communication se fait par une ouverture de communication 12 ménagée de préférence dans les parois supérieure 5 et inférieure 4, soit dans l'une seulement de ces.parois ou dans les deux, dans leur partie proche de l'ouverture de sortie 7. Un générateur d'ultrasons 13 est disposé dans le réservoir de bain 11.The elongated corridor 2 is ° placed in communication with a bath tank 11; the communication takes place through a communication opening 12 preferably formed in the upper 5 and lower 4 walls, either in only one of these walls or in both, in their part close to the outlet opening 7. A ultrasonic generator 13 is arranged in the bath tank 11.

Dans l'exemple des figures 1 et 2, l'ouverture de communication 12 est prévue dans la paroi supérieure 5.In the example of FIGS. 1 and 2, the communication opening 12 is provided in the upper wall 5.

Une cuve conforme à l'invention est avantageusement constituée par un bac inférieur ayant le long de son bord supérieur une collerette périphérique extérieure 14 qui est horizontale en position d'utilisation. De même, il existe un bac supérieur, moins profond dans l'ensemble que le bac inférieur, ayant aussi une collerette périphérique extérieure 15 qui est horizontale en position d'utilisation. Il est même possible, comme on le voit sur la figure 1, que la paroi supérieure 5 et la collerette 14 se trouvent dans un même plan dans la partie avant qui fait suite à l'ouverture d'entrée 6.A tank according to the invention is advantageously constituted by a lower tank having along its upper edge an outer peripheral flange 14 which is horizontal in the position of use. Likewise, there is an upper container, which is generally less deep than the lower container, also having an external peripheral flange 15 which is horizontal in the position of use. It is even possible, as can be seen in FIG. 1, that the upper wall 5 and the flange 14 are located in the same plane in the front part which follows the entry opening 6.

Ces bacs s'obtiennent par emboutissage d'une tôle ou par formage d'une feuille en matière plastique. Le réservoir de bain 11 apparait à la suite d'un emboutissage ou d'un formage plus profond dans la partie arrière. Il est donc facile de faire apparaître le réservoir de bain 11 soit sur le bac supérieur (figure 1) qui constitue la paroi supérieure 5 du canal allongé 2, soit sur le bac inférieur (figure 3) qui constitue la paroi inférieure 4, soit sur l'un et l'autre bac, sur les deux parois 4 et 5 du couloir allongé 2 (figure 4).These bins are obtained by stamping a sheet or by forming a plastic sheet. The bath tank 11 appears following a deep-drawing or deepening in the rear part. It is therefore easy to reveal the bath tank 11 either on the upper tank (FIG. 1) which constitutes the upper wall 5 of the elongated channel 2, or on the lower tank (FIG. 3) which constitutes the lower wall 4, or on one and the other tray, on the two walls 4 and 5 of the elongated corridor 2 (Figure 4).

On obtient facilement une cuve 1 avec un ou deux réservoirs de bain 11, en assemblant un bac inférieur avec un bac supérieur mis en sens inversé, à l'aide de leurs collerettes périphériques 14, 15, en comprimant entre elles au moyen de boulons 1.6, un joint d'étanchéité 17 en matière pleine, en dehors des zones des ouvertures d'entrée 6 et de sortie 7. Dans ces dernières on place un joint d'étanchéité 18 à lèvre élastique 19. De préférence, ce joint 18 est fixé, par exemple au moyen d'un adhésif, à la collerette 15 du bac supérieur. La lèvre élastique 19 s'appuie alors s ur la collerette.14 du bac inférieur. Mais il est préférable de monter dans chaque ouverture d'entrée 6 et de sortie 7 un moyen de soutien 10 qui déborde de la collerette 14 vers l'intérieur et vers l'extérieur et contre lequel s'appuie la lèvre élastique 19. Dans les deux ouvertures 6, 7 les lèvres 19 sont dirigées dans le sens de circulation des plaques 3 qui les soulèvent en entrant dans le bain et en le quittant.One easily obtains a tank 1 with one or two bath tanks 11, by assembling a lower tank with an upper tank set in opposite directions, using their peripheral flanges 14, 15, compressing them by means of bolts 1.6 , a seal 17 made of solid material, outside the zones of the inlet 6 and outlet 7 openings. In the latter, a seal 18 with elastic lip 19 is placed. Preferably, this seal 18 is fixed , for example by means of an adhesive, to the collar 15 of the upper tank. The elastic lip 19 then rests on the collar. 14 of the lower tank. However, it is preferable to mount in each inlet 6 and outlet 7 opening a support means 10 which projects beyond the flange 14 inwards and outwards and against which the elastic lip 19 is supported. two openings 6, 7 the lips 19 are directed in the direction of circulation of the plates 3 which lift them when entering and leaving the bath.

Dans toutes les réalisations, le couloir allongé 2 est totalement rempli de bain entre les deux parois 4, 5 sans volume d'air. Quand le bac 1 ne comprend qu'un seul réservoir de bain 11 incorporé au bac supérieur (figure 1), le niveau libre 20 du bain peut se trouver dans ce réservoir et maintenu constant au moyen d'un détecteur de niveau 21. L'arrivée du bain révélateur se fait alors à la partie inférieure du réservoir 11, par une tubulure 22. Quand la cuve 1 comprend deux réservoirs 11, l'un supérieur et l'autre inférieur (figure 4); le niveau libre 20, le détecteur de niveau 21 et la tubulure d'alimentation 22 se trouvent sur le bac supérieur.In all embodiments, the elongated corridor 2 is completely filled with bath between the two walls 4, 5 without air volume. When the tank 1 comprises only one bath tank 11 incorporated in the upper tank (FIG. 1), the free level 20 of the bath can be in this tank and kept constant by means of a level detector 21. The arrival of the revealing bath is then made at the lower part of the tank 11, by a tube 22. When the tank 1 comprises two tanks 11, the upper one and the 'other lower (Figure 4); the free level 20, the level detector 21 and the supply pipe 22 are located on the upper tank.

Quand la cuve 1 comprend un seul réservoir ihfé- rieur 11 (figure 3), il n'y a pas de niveau libre du bain ; la tubulure 22 d'arrivée du bain aboutit à la paroi supérieure 5 de la cuve.When the tank 1 comprises a single lower tank 11 (FIG. 3), there is no free level of the bath; the tubing 22 for the arrival of the bath ends at the upper wall 5 of the tank.

Dans les trois cas il est prévu un tuyau de vidange 23 qui part du point le plus bas du bac inférieur ou du réservoir inférieur'll quand celui-ci existe, dans la partie de la cuve proche de l'ouverture de sortie 7.In all three cases, a drain pipe 23 is provided which starts from the lowest point of the lower tank or of the lower tank, when it exists, in the part of the tank close to the outlet opening 7.

On peut obtenir une cuve 1 de l'un des trois types quelconques en assemblant deux bacs convenables ; on peut modifier facilement une cuve existante en remplaçant l'un des bacs.It is possible to obtain a tank 1 of any one of the three types by assembling two suitable tanks; you can easily modify an existing tank by replacing one of the tanks.

Le générateur d'ultrasons.13 est disponible dans le commerce. Il se monte dans l'un ou l'autre des réservoirs de bain 11, ou dans les deux réservoir 11 quand il est envisagé de traiter des plaques pourvues d'une couche photosensible sur leurs deux faces opposées.The ultrasound generator. 13 is commercially available. It is mounted in one or the other of the bath tanks 11, or in the two tanks 11 when it is envisaged to treat plates provided with a photosensitive layer on their two opposite faces.

Claims (10)

1. Cuve à générateur d'ultrasons pour le traitement dans un bain révélateur agité par des ultrasons de plaques (3) à couche photosensible traversant ce bain, caractérisée en ce qu'elle comprend un couloir rectiligne allongé (2) ayant une paroi inférieure (4) et une paroi supérieure (5) contenant entre elles le bain révélateur, avec une ouverture d'entrée (6), à une extrémité et une ouverture de sortie (7) à l'extrémité opposée, ces ouvertures (6, 7) étant espacées d'une longueur inférieure à la longueur de la plaque la plus courte à traiter, au moins un joint d"étanchéité (18)à lèvre élastique (19) étant disposé dans chacune de ces ouvertures (6,7), au moins un réservoir de bain (11) contenant le générateur d'ultrasons (13) étant en communication avec ce couloir rectiligne allongé (2) par une ouverture de communication (12), des moyens (8,9) de propulsion des plaques (3) le long du couloir (2) étant placés à proximité des ouvertures d'entrée (6) et de sortie (7).1. Ultrasonic generator tank for treatment in a revealing bath agitated by ultrasound of plates (3) with a photosensitive layer passing through this bath, characterized in that it comprises an elongated rectilinear passage (2) having a bottom wall ( 4) and an upper wall (5) containing between them the developer bath, with an inlet opening (6) at one end and an outlet opening (7) at the opposite end, these openings (6, 7) being spaced apart by a length less than the length of the shortest plate to be treated, at least one seal (18) with elastic lip (19) being arranged in each of these openings (6,7), at least a bath tank (11) containing the ultrasonic generator (13) being in communication with this elongated rectilinear corridor (2) by a communication opening (12), means (8, 9) for propelling the plates (3) along the corridor (2) being placed near the inlet (6) and outlet (7) openings. 2. Cuve selon la revendication 1, caractérisée en ce que des moyens de soutien (10) sont disposés entre la paroi inférieure (4) et la paroi supérieure (5) au niveau des deux ouvertures d'entrée (6) et de sortie (7).2. Tank according to claim 1, characterized in that support means (10) are arranged between the bottom wall (4) and the top wall (5) at the level of the two inlet (6) and outlet ( 7). 3. Cuve selon la revendication 2, caractérisée en ce que les moyens de soutien (10) sont espacés dans le sens de circulation des plaques (3) à travers le bain.3. Tank according to claim 2, characterized in that the support means (10) are spaced in the direction of movement of the plates (3) through the bath. 4. Cuve selon la revendication 2, caractérisée en ce que des moyens de soutien (10) constitués par une plaque plane, sont disposés dans l'ouverture d'entrée (6) et dans l'ouverture (7) et la lèvre élastique (19) des joints d'étanchéité (18) s'applique contre cette plaque plane.4. Tank according to claim 2, characterized in that support means (10) constituted by a flat plate, are arranged in the inlet opening (6) and in the opening (7) and the elastic lip ( 19) seals (18) are applied against this flat plate. 5. Cuve selon la revendication 1, caractérisée en ce que le réservoir de bain (11) se trouve sur la paroi supérieure (5) au-dessus de l'ouverture de communication (12) ménagée dans cette dernière.5. Tank according to claim 1, characterized in that the bath tank (11) is located on the upper wall (5) above the communication opening (12) formed in the latter. 6. Cuve selon la revendication 1, caractérisée en ce que le réservoir de bain (11) se trouve sur la paroi inférieure (4) en-dessous de l'ouverture de communication (12) ménagée dans cette dernière.6. Tank according to claim 1, characterized in that the bath tank (11) is located on the bottom wall (4) below the communication opening (12) formed in the latter. 7. Cuve selon la revendication 1, caractérisée en ce qu'un premier réservoir de bain (11) se trouve sur la paroi supérieure (5) au-dessus de l'ouverture de communication (12) ménagée dans cette dernière et un second réservoir de bain (11) se trouve sous la paroi inférieure (4) en-dessous de l'ouverture de communication (12) ménagée dans cette dernière.7. Tank according to claim 1, characterized in that a first bath tank (11) is located on the upper wall (5) above the communication opening (12) formed in the latter and a second tank bath (11) is located under the bottom wall (4) below the communication opening (12) formed in the latter. 8. Cuve selon la revendication 1, caractérisée en ce que la paroi inférieure (4) fait partie d'un bac ayant le long de son bord libre une collerette périphérique (14), la paroi supérieure (5) fait partie d'un bac ayant le long de son bord libre une collerette périphérique (15), ces deux bacs étant assemblés par leurs collerettes, le bac constituant la paroi supérieure (5) étant mis en sens inverse, un joint d'étanchéité (17) étant serré entre les collerettes périphériques (14,15)en dehors des zones des ouvertures d'entrée (6) et de sortie (7).8. Tank according to claim 1, characterized in that the lower wall (4) is part of a tank having along its free edge a peripheral flange (14), the upper wall (5) is part of a tank having along its free edge a peripheral flange (15), these two tanks being assembled by their flanges, the tank constituting the upper wall (5) being placed in opposite directions, a seal (17) being clamped between the peripheral flanges (14,15) outside the areas of the inlet (6) and outlet (7) openings. 9. Cuve selon la revendication 8, caractérisée en ce que le réservoir de bain (11) ou chaque réservoir de bain (11) fait partie intégrante du bac par suite d'un emboutissage ou d'un formage plus profond de ce bac dans une partie de la paroi limitant le couloir rectiligne allongé (2).9. Tank according to claim 8, characterized in that the bath tank (11) or each bath tank (11) is an integral part of the tank as a result of deep drawing or deepening of this tank in a part of the wall limiting the elongated rectilinear corridor (2). 10. Cuve selon la revendication 1, caractérisée en ce qu'une première paire de cylindres (8) et une seconde paire de cylindres (9) sont disposées respectivement en regard de l'ouverture d'entrée (6) et de l'ouverture de sortie (7) en dehors du canal rectiligne (2) pour propulser les plaques (3) à traiter dans ce canal (2).10. Tank according to claim 1, characterized in that a first pair of cylinders (8) and a second pair of cylinders (9) are disposed respectively opposite the inlet opening (6) and the opening outlet (7) outside the rectilinear channel (2) to propel the plates (3) to be treated in this channel (2).
EP84401115A 1983-06-02 1984-05-30 Tank for processing offset plates by ultrasound Ceased EP0129460A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8309144 1983-06-02
FR8309144A FR2547073B1 (en) 1983-06-02 1983-06-02 TANK FOR THE TREATMENT OF OFFSET PLATES BY ULTRASOUND

Publications (1)

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EP0129460A1 true EP0129460A1 (en) 1984-12-27

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EP84401115A Ceased EP0129460A1 (en) 1983-06-02 1984-05-30 Tank for processing offset plates by ultrasound

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US (1) US4515456A (en)
EP (1) EP0129460A1 (en)
DK (1) DK234684A (en)
FR (1) FR2547073B1 (en)

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US4788992A (en) * 1987-04-28 1988-12-06 Lewis Corporation Ultrasonic strip cleaning apparatus
FR2617295B1 (en) * 1987-06-25 1991-05-31 Milovanovich Andre PHOTOGRAPHIC AUTOMATON, MULTIFORMAT, MULTIPROCEDURE, MULTIVITESSE, MODULABLE, AND REFUSAL TO START OR RESET BY DEFAULT OF QUALITY, WITH OR WITHOUT PAYMENT BY PAYMENT CARD
EP0306976B1 (en) * 1987-09-11 1994-12-14 Fuji Photo Film Co., Ltd. Automatic film processor
US5148206A (en) * 1988-10-07 1992-09-15 Fuji Photo Film Co., Ltd. Automatic film processor using ultrasonic wave generators
US5182593A (en) * 1991-01-14 1993-01-26 Fischer Industries, Inc. Roller tank
US5369459A (en) * 1991-10-04 1994-11-29 Fischer Industries, Inc. Solution filling system for a film processor apparatus
US5255042A (en) * 1991-10-04 1993-10-19 Fischer Industries, Inc. Top-drop film feed system
US5262817A (en) * 1991-10-04 1993-11-16 Fischer Industries, Inc. Switching system for a film processor apparatus
US5313242A (en) * 1993-04-27 1994-05-17 Eastman Kodak Company Thru-wall web processing apparatus
SE516250C2 (en) * 2000-04-28 2001-12-10 Oskar Fraanberg Rechargeable breathing apparatus, especially diving apparatus

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FR1298191A (en) * 1961-08-22 1962-07-06 Continuous processing apparatus for photosensitive films
US3277810A (en) * 1964-04-22 1966-10-11 Seymour L Hersh Linear photographic processing system
FR2256097A1 (en) * 1973-12-26 1975-07-25 Hoechst Co American
BE828282A (en) * 1974-04-24 1975-10-23 DEVICE FOR TREATMENT OF PLATE MATERIAL BY MEANS OF A LIQUID
GB2075372A (en) * 1980-05-07 1981-11-18 Eskofot As Developing light-sensitive material

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US3702795A (en) * 1968-02-21 1972-11-14 Grace W R & Co Apparatus for ultrasonic etching of polymeric printing plates
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FR1298191A (en) * 1961-08-22 1962-07-06 Continuous processing apparatus for photosensitive films
US3277810A (en) * 1964-04-22 1966-10-11 Seymour L Hersh Linear photographic processing system
FR2256097A1 (en) * 1973-12-26 1975-07-25 Hoechst Co American
BE828282A (en) * 1974-04-24 1975-10-23 DEVICE FOR TREATMENT OF PLATE MATERIAL BY MEANS OF A LIQUID
GB2075372A (en) * 1980-05-07 1981-11-18 Eskofot As Developing light-sensitive material

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US4515456A (en) 1985-05-07
DK234684A (en) 1984-12-03
DK234684D0 (en) 1984-05-11
FR2547073A1 (en) 1984-12-07
FR2547073B1 (en) 1985-09-13

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