EP1211352A1 - Apparatus for preservation of paper - Google Patents

Abstract

The assembly to preserve printed paper materials and documents has an initial bath (1) to contain a solution, and a transport system to carry the paper sheets through the solution in the bath. The transport system has a shrouding (2,3) to cover the carried paper sheets, with walls which are permeable to fluid, and moved through the bath by rollers (4-7). The assembly to preserve printed paper materials and documents has a permeable shrouding to cover them, while moving through the bath, as a netting or braiding of wires or filaments of metal, plastics or plastics coated with rubber. The shrouding for the material being treated is formed by two conveyor belts pressed together. The transport system incorporates bristles (8), especially fitted to one roller, to detach the paper sheets from the conveyor belt shrouding on leaving the bath. The assembly has a second bath (9), preferably heated, with a link to the first bath so that liquid is pumped from the second bath back to the first, and liquid flows through an overflow pipe from the first bath into the second.. The two conveyor belts, pressed together with the paper sheets between them, are distorted into a semi-circle while passing through the first bath through the rollers arranged in a semi-circle. The first bath has a spray tube (11), to spray or flush the carrier paper sheets with liquid, structured to release the sheets from the conveyor on or after leaving the bath. The assembly has a photo sensor, connected to an evaluation unit, to register the passage of the paper sheets and especially in numbers. The two conveyor belts form a pocket to carry the paper sheets through the bath, with their edges bonded together by stitching and/or welding. A conventional photographic developing machine is used for the first bath and the transport system. A drying unit is after the first bath, using blown air directed at the wet paper sheets carried on a permeable belt. The dried paper sheets are finally ironed.

Description

The present invention relates to a device for the preservation of Printing and paper products and the use of known photo processing machines. Papers, i.e. sheet-like, are used for preservation Printed and paper products such as Deacidified magazines, files or documents, by immersing them in a suitable solution. A device to preserve the type mentioned are from the publications DE 196 12 368 A1, US 5,422,147 and US 3,503,319 are known.

The one that occurs with all printed and paper products during storage Aging leads primarily through traces of acids released in paper to a progressive destruction of the paper substance. The problem is with the modernization of paper production in the 19th century.

While the handmade paper made from rags used to be Times are alkaline by nature and therefore can be stored practically indefinitely, the technical development led to an acid product a pH between 3.5 and 5.5. With the transition to industrial mass production the paper was glued by adding resin and acidic aluminum sulfate (alum). In addition, wood grinding was invented, with which the germ is laid for later decay in two respects was: The harmful effect of resin alum glue is namely through the Lignin contained in the wood is intensified. The acid gradually decomposes the Cellulose fibers of the paper, which becomes fragile and ultimately turns to dust. If no countermeasures are taken, this damage follows a few decades to a total destruction of the paper.

It is therefore for the preservation of archives, collections and library holdings required to neutralize the acids in the paper and at the same time in the paper to anchor the sufficient amount of a substance that is also a future one Acid release neutralized in paper.

First attempts to counteract this and the durability of the paper by means of a deacidification treatment were already in 1891 made a solution of barium hydroxide in methanol for deacidification the carrier of Raphael drawings was used. Were later Alkaline earth bicarbonates used to deacidify paper. Proceeding various alkaline earth compounds for neutralization and conservation used. In all cases, the individual restorers used to Treatment of individual pieces or books of high value is made, whereby It has recently emerged that the treatment of entire archives is impossible to accomplish in this way.

For this reason, various processes have been developed and tested on the one hand single sheet treatment and on the other hand mass conservation of whole blocks of paper or of bound copies of Allow books and magazines and the like.

When preserving whole blocks of paper or bound Paper raises the problem that the material to be treated, which in was soaked in a liquid preservative solution, only with difficulty evenly to soak and then dry. On the one hand, this can be too organic Damage due to mold formation etc. and on the other hand to one Glue several layers of paper together. A well-known process (US 39 69 549) consists in the treatment of books with vapors of metal alkyls, especially with vapors of diethyl zinc. Due to the moisture in the Paper the metal alkyls into the oxides of the metals, e.g. converted into zinc oxide, that remains in the paper and a good neutralizer for free ones Represents acids.

According to another known method, the so-called Wei T'o Process or system, the books are dried after a previous one with a solution of an organomagnesium compound such as, for example Treated methyl magnesium carbonate in a suitable solvent. Furthermore, EP 02 73 902 A2 specifies a method in which the books with a aqueous solution of calcium hydroxide with the known method the vacuum impregnation. The treated, still wet books are snap frozen and freeze dried.

In addition to these processes, which are mainly based on the mass deacidification of target multiple bound books, there is a need for devices efficient deacidification and preservation of individual sheets of paper enable.

In addition, photo paper developing machines are from the prior art known with which papers are transported in and out of the solutions. Such Wet treatment devices for photographic substrates are known from the patent specification DE 40 00 114 and the utility model G 9 111 897.2.

Known machines of this type have a transport mechanism that with rollers or a conveyor belt through a photographic layer support or transported several baths. These baths are in tubs that come with various chemicals or the like can be filled. In the photographic Range are e.g. a color development bath, washing bath, Bleaching bath, fixing bath, stop bath; Stabilizing bath provided. The machines can automatically process exposed films or papers. In little ones and medium-sized photo laboratories are primarily photo developing machines for the Paper development in use. With simpler devices, the papers then be watered and dried. More complex machines work from «dry to dry», that means they also take over Washing and drying the material.

The development machines - also called processors - have been developed in addition to a high throughput of photo paper to be developed to maintain uniformity in development results. This is based on the one hand, that the exposure time for a given transport speed the chemicals are constant. On the other hand, many of the processors work on the principle of regeneration. Used chemicals will be constantly replaced by adding small amounts of fresh solutions. It results high processing consistency.

The transport mechanism of these processors is on the transport of photo paper Voted. Common photo paper for mass use is so-called RC paper (RC = resin coated). It is about around "paper", the paper carrier sealed on both sides with a plastic layer is. Usually polyethylene is used for this. The carrier RC papers take neither water nor chemicals during processing on. On the processing of papers that are not in the aforementioned The processors are not set up.

The object of the present invention is to provide a device which can be used to make sheet-shaped paper and printer products reliable and to preserve or deacidify quickly. It is another task of the invention, photo paper developing machines a new use supply.

These tasks are performed by a generic device with the Features of claim 1 and by use with the features of the subsidiary claim resolved. Advantageous configurations result from the subclaims.

The claimed device comprises one or more containers for Picking up a solution. At least one container holds a solution and is dimensioned so that it can at least partially accommodate the paper. It can have a tub-like shape so that the paper can easily get into it can be transported in and out of it.

A protective, liquid-permeable wrapper is for holding individual Sheets of paper provided. The wrapping is designed so that the paper sheet located in the wrapper is mechanically fixed. It is therefore not loose in the wrapper and cannot move in the wrapper. This ensures that the paper cannot fold and so that it is treated unevenly. The mechanically stable position relative to Wrapping protects against mechanical damage.

The casing is permeable to liquids in the sense of the invention when liquid from all sides essentially uniformly into the interior of the casing can flow. This is to ensure that what is in the casing Paper is soaked with liquid evenly when wrapping into the bath, i.e. into the container with the liquid.

Part of the device according to the claims is a means of transport with which the Envelope with the paper inside the container with the solution supplied and can be led out of it. This means of transport includes rollers that transport the wrapper directly. These are, for example arranged one behind the other and driven, that on and between the rolls rotating like this one as a covering or protective cover acting device, for example a pocket-shaped Device or bag can be transported. The rollers allow a continuous, easy-to-use, particularly problem-free loading and unloading the device with the paper to be treated.

The path that the paper then takes through the container with the one inside Solution, that is to say through the bath, is given by the arrangement of the rollers.

An example of the transport is a rotating conveyor belt. This driven belt takes the conveyor belt to be transported Pocket and guides it in and out of solution. The conveyor belt can also be part of the protective covering. It is then permeable to liquids obtain.

Two bands that are pressed against each other along a route can be the means of transport and at the same time the protective cover. This embodiment is preferred because the paper is easily and quickly fed to the device can be.

So that a bag acting as a protective cover is transported by rollers, must be such that the rollers or the belt "grip" them can. For this purpose, the bag preferably has a correspondingly non-slip surface on. Rubber provides such a surface.

A plastic bag that rolls around curves is regularly sufficiently rigid against bending so that it does not wrap around the roller instead of being carried by it. Loose wet paper can easily wrap around rollers. This is through the Bag avoided.

A "bag" is a protective covering through which the transport of mechanically sensitive printed products such as paper in and out Solutions in an automatic process is made possible. The bag is with an opening for the paper to be preserved for transport to bring in. With the wrapping, the paper to be preserved is in front of the mechanical impact protected by the rest of the transport system. A protective effect is particularly necessary when the to be transported Paper and printed products are very delicate, in particular if they are saturated with the chemical solutions. Without the protective, Stabilizing effect of the bag there is a risk that the transport system (for example, the rollers) tearing the paper and printed products. This can be avoided with an inventive device. additionally the wrapper prevents the paper from sticking to the rollers or belt remains. The problem occurs especially when paper is out of solution is soaked.

The transport system consists of rollers like those used in photo paper developing machines periodically the case is opposed to a certain stiffness Bending of the material to be transported is required. Is that to be transported Material too thin and or too flexible, it hangs after transportation too much through one roller and cannot reach the next roller and be captured by it. By wrapping it with the bag, one can such rigidity can be achieved that this sagging is avoided. The Stiffness should not be too high when transporting around curves, so that the envelope can bend sufficiently to the curvature in the To be able to take part in the transport route. When using plastics with a Thickness from 0.1 to 1 mm as the bag material will give the desired properties achieved regularly.

By means of the device acting as a protective cover, such as two along a route liquid conveyor belts pressed against each other or the paper or printed product is transported into a solution like a bag, that this should preserve. So that the preservation effect sets in, the paper must be saturated with the solution during immersion become. In order for this to be the case, the walls of those acting as a protective cover Device, for example the two straps or that of the bag permeable to liquids his. For this purpose, the walls should preferably be designed like a network. This net can be braided from plastic threads or wire or from one with holes provided plastic sheet. The number of holes the wall per unit area and its diameter are particularly so too choose that liquid flows through easily and evenly. simultaneously may require a drying of the wet paper in the bag corresponding to the diameter and their number. The diameter of the Holes in the net can be 0.5 to 2 cm. The single thread points, for example a width of 1 to 4 mm.

In addition to the stiffness / flexibility mentioned above, the Choice of the material of the bag and the wire to ensure that it is inert behaves towards the solutions used. As mesh materials for this reason also inert plastics, stainless steels and / or Rubber compounds used.

As usual, the bag has an opening into which the material to be transported can be found is introduced. The remaining edge of the bag is welded and / or sewing closed. By welding the plastic surfaces of the Bag is very easy and inexpensive to create the bag. It will no other substance - such as glue - needed for attachment. This will avoid that another substance is immersed in the solution. Avoids at the same time Welding on a braided mesh made of plastic threads that the net dissolves at the edges.

By sewing with a thread, the material of which with regard to the above Should be selected requirements for the bag, will be a special durable and firm connection achieved. The thread therefore exists in particular made of the same material as the rest of the bag.

Machines, in particular, are used for transport into and from chemical solutions - Processors mentioned above - used, from the photo laboratory technology are known. Such machines regularly have the necessary facilities on. So transport systems of these devices exist regularly from rollers that allow the bag to pass through one or more trays, i.e. containers is transported.

According to the invention, the chemical solution or solutions used for preservation of paper are used in the corresponding tub or tubs of the processor and the transport of the one in the bag Paper.

• Maschinen dieser Art sind optimiert auf den Transport von blattförmigem Material durch chemische Lösungen;
• durch die Einstellungsmöglichkeit der Transportgeschwindigkeit kann leicht die Einwirkzeit einer chemischen Lösung gesteuert werden;
• durch die fest vorgegebene Transportgeschwindigkeit ergeben sich reproduzierbare Ergebnisse.

A photo paper developing machine can be used for several reasons:

• Machines of this type are optimized for the transport of sheet material through chemical solutions;
• by setting the transport speed, the exposure time of a chemical solution can be easily controlled;
• reproducible results are obtained due to the fixed transport speed.

A photo paper developing machine equipped in this way is advantageously used, where the chemical solution regenerates during transportation can be. This way the preservation process can be continuous be performed.

In particular, a photo paper developing machine equipped in this way is used where the machine includes a final drying facility. The papers are then automatically dried.

In a further embodiment, the machine comprises a device for Pressing paper. This will remove the paper after deacidification or pressed after drying and mechanically desired to the initial state set back.

Are preferably used as continuous dryers. This is Devices for fast, efficient drying of plastic-coated photo papers. The paper is passed through transport rollers in a continuous dryer for example moving past an infrared heater.

By using such processors for paper preservation can be used for a new determination. The existing ones Machines are ideally fed into a new use.

In order to be able to use the processors that are matched to RC paper, it is regular necessary to put the paper to be deacidified into a bag-like one, for example Bring wrapping. This ensures that what is to be deacidified Paper - for example an old document - comparable through the wrapping mechanical properties like RC paper.

Solutions tailored to the conservation process are becoming commercial offered.

The edges of the bag are designed with a plastic band envelops. The edges of the bag become advantageous during the transportation process protected from damage in a special way.

In one embodiment of the invention, the device comprises a first container for the absorption of a liquid, i.e. a bath. The liquid works the preservation of the paper. Paper is transported through the bathroom as follows:

Two conveyor belts driven by axes or rollers are against each other pressed. In the conveyor belts pressed against each other Paper inserted from one side. The conveyor belts pass through the paper the liquid through. The conveyor belts are permeable to liquids. she consist in particular of wire or wires that are mesh-like with each other are intertwined. The wires are made of VA material.

In one embodiment, gears engage the meshes on the side of the belts on. The extent of the meshes are matched to the gears in such a way that a subsequent tooth of a gear in a subsequent mesh of the affected band intervenes. The principle is known from chain drives. The gears are, for example, to the left and right of axes, over the the affected conveyor belt is guided. The belts can be transported in this way very reliable and trouble-free. The high reliability is necessary because the device is intended to transport valuable documents. The economic Loss would be very large if paper was lost due to transportation problems a tape would be damaged. The aforementioned drive has proven to be suitable proven to meet these requirements.

In one embodiment, when the paper leaves the bath, it enters next conveyor belt. The next conveyor belt is also preferably in Form of a wire mesh. The paper is on this conveyor belt just on. This subsequent conveyor belt will Paper passed through a dryer. Below this next conveyor belt there is, for example, air circulation. Warm air is circulated here, to dry the paper. It is a classic drying device, as it is already used for photo development.

At the transfer point from the conveyor belts that pass the paper through the Transport the bath, point to the conveyor belt that leads through the dryer the axes with which the conveyor belts are driven, brushes on. The brushes protrude from the mesh of the individual bands. On this way, the paper becomes mechanically light immediately before delivery raised and mechanically released from the straps at the same time. It succeeds this way a non-destructive, reliable handover of the mechanically highly sensitive paper from one conveyor belt to the next.

A mesh of the wire mesh that is used as a conveyor belt is typically 40 x 6 mm. The thickness of the wire is typically approx. 1 mm. The dwell time in the bath is a few minutes, for example 3 minutes, to achieve the desired preservation effect. Corresponding The transport through the bath takes place slowly.

At the end of the conveyor belt, which runs through the dryer, is in one Embodiment provided a type of automatic ironing machine. This points, for example a fabric-covered, padded roller. On the fabric-covered, padded In one embodiment, the roller presses a half-shell made of VA steel on. The paper is inserted between the half-shell and the roller, and onto this The dried paper is then "ironed". Then the paper is in a proper condition. The process is now complete.

The bath with the preservation liquid is advantageous to a circulation system connected. An overflow pipe leads from the bath to another container into it. The liquid can finally fall into the other container like a waterfall get, which is only filled, for example, only 20%. The other container is then located below the bathroom. The other container instructs the bottom of a drain on the inside of the bathroom advantageous in a kind Sprinkler system opens. The sprinkler system includes bars a variety of openings. The bars are parallel to an adjacent one Conveyor belt aligned. They are positioned so that the one Rod emerging rays are aimed at the paper, which means which the tapes are transported through the bathroom. Such a pole with holes hereinafter also called spray tube, is advantageous at the exit of the Bades arranged. The spray tube serves u. a. removing the paper from the conveyor belt. The jet direction of the liquid jets shows in particular diagonally upwards and in such a way that the paper from the bottom Tape is detached. This way, the reliability of the transition becomes too the conveyor belt leading through the dryer.

Spray pipes are also provided inside the bathroom. Two more spray pipes are, for example, parallel to the transport system inside the bathroom arranged. Here the paper to be transported is also "sprayed", and in this case inside the bathroom. This will make the desired conservation process accelerated. There is one in the circuit for this purpose Pump arranged.

The preservation liquid can be brought up to the operating temperature in the further container to be brought. The operating temperature is typically 25 ° C.

The liquid enters from the liquid bath to the other container Overflow pipe. The overflow ensures that the desired one Liquid level in the container is reached. Then comes due to gravity the overflowing liquid in the lower container.

The further container is advantageously provided with a second circulation circuit. So there is a second drain and a second feed and one second pump arranged in between. By the arranged in between Pump ensures that the liquid is circulated in the other container becomes. This is useful to ensure a homogeneous distribution of the solution to achieve optimal preservation results.

The heater, which is used to bring the liquid in the bathroom to temperature, can be arranged in the second circulation circuit of the further container his. For example, it is located directly in front of the pump. To this The heating can be implemented in a particularly simple manner.

In the supply from the further container into the bath is advantageous Check valve arranged. The check valve prevents Liquid from the actual bath due to gravity through this feed gets into the other container. Even in the event of a malfunction, e.g. the Failure of the corresponding pump ensures that the liquid is in the bath, does not run back into the other container.

At the point where the paper is fed into the two conveyor belts, an inclined plate is preferably provided. The sloping plate is arranged that the bottom end of the sloping plate is facing the entrance borders the two conveyor belts. The sloping plate consists of one smooth material, e.g. made of a hard plastic.

The paper to be preserved is placed on this sloping plate. Since the sloping plate is very smooth, the paper slips effortlessly into the entrance to the Conveyor belts. This ensures that operating errors are avoided that could destroy the paper.

At the lower end of the sloping plate there is advantageously a steel rod above or some other upper limit. The steel rod forms together a kind of entrance slot with the lower end. The entrance slot for example, is about 2 cm wide. This further ensures that the Paper gets into the transport system without errors.

The sloping plate is advantageously provided with a series of holes. In photocells are arranged in the holes. The paper is made using the photocells detects which gets into the machine. By an evaluation device it is determined how much paper or how many square meters of paper the machine is fed. As a result, data are determined that are suitable for trouble-free Operation, the accounting system and for the determination of maintenance intervals are of interest. For example, it can be used for paper preservation billed to the customer depending on the number of square meters become. Since sales are also determined in this way statements can be made about when maintenance measures are to be made.

If paper is detected by the photocell, the paper, for example, 3 Minutes later to the dryer. The time can of course vary individually. The The system is able to move independently due to the transport speed recognize when the paper reaches the dryer. Depending on this the activation of the dryer can be controlled. If paper is loaded, So in the example 3 minutes later the warm air from the dryer is switched on. In this way, the energy requirement of the device is low held.

FIG. 1 shows a section of a wall of a bag according to the invention in original size. Rubber-coated plastic threads 100 form a network, whose meshes are 9 mm x 9 mm. The threads have a diameter from 2 to 3 mm. A plastic tape 101 borders the edges of the Bag to stabilize it mechanically.

Figure 2 shows a preferred embodiment of the device for preservation of printed and paper products.

The device comprises a first container 1 for receiving a solution. The first container can be accessible from above. By the first Container 1 carries a means of transport, the sheet-shaped printed and paper products can be transported in and out of the container. The means of transport provides an envelope 2, 3 for receiving the sheet-shaped printing and Paper product ready. The walls of the casing 2, 3 are permeable to liquids. The coating 2, 3 is by means of rollers 4, 5, 6 and 7 through the Container moves.

The wrapping consists of two circumferential bands 2 and 3, one of which Wires are braided. The wires are made of VA metal, because this is behaves inert to the preservation liquid.

The roller or axis 7 is used to transport the lower belt 3. It is arranged at the outlet of the first container. Bristles 8 are so on the roller 7 attached that the paper located on the conveyor belt 3 after leaving the first container from the conveyor belt on the Bristles 8 arrives. For this purpose, the bristles protrude through the mesh of volume 3 through. This way you lift the wet paper across from you Tape gone.

Another container 9 is connected to the first container 1 in such a way that Liquid can be exchanged between the two containers 9 and namely by pumping liquid from the further container 9 into the first one and from the first tank via an overflow pipe into the second tank flows back due to gravity. The second container has a further circulating device on. This is desirable for homogeneous mixing of the liquid. A heater is on the second tank coupled to bring the liquid up to operating temperature.

The conveyor belts 2, 3 pressed against each other are over the rollers 4 guided in a semicircle through the first container. Through this arch shape ensures that band 3 presses against band 2. The between The paper on the tapes is reliably held in position. According to Figure 2, the semicircle is close to the bottom of the first Tray 1. The paper is therefore going through from top to bottom and back led the first container. The container is in relation to the diameter relatively deep. A long transport route with a small footprint is desired allows.

Spray pipes 10 and 11 are located in the first container 1. From the further Container 2, the preparation and supply of the preservation liquid serves, the liquid is pumped into the spray tubes. The spray pipes are located adjacent to conveyor belts 2 and 3. From the spray pipes sprays the liquid towards the conveyor belts, so that Freshly prepared liquid is washed around the paper. That is near the exit arranged spray tube 11 is located above the liquid level in the first tank through the overflow pipe (not shown) is specified. Here the rotating conveyor belts come loose again from each other. This spray tube gently removes the paper from the bottom Conveyor belt 3 released and slightly raised. Spray tube 11 is so arranged that transported paper when leaving the first container is released from the casing with the cooperation of the spray tube.

Photosensors are integrated in a plate 12. The plate 12 consists of Plastic material with a very smooth surface. Plate 12 is at an angle Entrance to the first tray so that paper is placed on the Plate 12 is placed, slips into the casing and from the tapes 2nd and 3 is detected. An evaluation unit is connected to the photo sensors, the paper that is transported through the first container will be recorded in terms of quantity, that is to say by square meter.

The first container 1 is followed by a drying device 13. The drying device 13 has an air-permeable conveyor belt 14 to hold the paper that got wet in the first container. The Conveyor belt also consists of a wire mesh. There is something deeper than the conveyor belt 3, through which the wet paper from the first Container 1 gets into the drying device 13. In the beginning it will Conveyor belt 14 of the drying device 13 driven by a roller 15, which is provided with bristles (as with roller 7). The wet and therefore highly sensitive paper becomes special by providing the bristles passed gently from one volume to another.

Finally, the device comprises a bracket device 15 with which the Paper is ironed.

Heating elements 16 of the drying device 13 are only switched on when necessary. Switching on is controlled via the photo sensors and the evaluation unit. If the photo sensors detect the supply of paper, then the Heating elements with a corresponding delay and with another corresponding one Delay switched off again.

The transport speeds through the first container and the following ones Facilities are the same.

Claims (15)

Device for the preservation of printed and paper products with a first container (1) that can hold a solution, with a means of transport which can transport sheet-shaped printed and paper products into and out of the first container (1), the means of transport comprises an envelope (2, 3) for receiving the sheet-like printed and paper product, the walls of the casing are permeable to liquids the casing is moved through the first container (1) by means of rollers (4, 5, 6, 7). Device according to Claim 1, in which the walls of the casing (2, 3) are reticulated or a mesh of wires or threads that especially made of metal, plastic or rubber coated Plastic. Device according to one of the preceding claims, wherein the Wrapping made of two circumferential pressed against each other Conveyor belts (2, 3) exist. Device according to one of the preceding claims, wherein the Transport means comprises bristles (8), so - especially on one Roller (7) - are attached, that in the casing (2, 3) located paper after leaving the first container (1) from the Wrapping out on the bristles. Device according to one of the preceding claims with a another, in particular heatable container (9), so with the first container (1) is connected that liquid between the two containers (1, 9) can be replaced, namely in particular by liquid from the further container (9) in the first pumped and from the first container (1) over a Overflow pipe can flow back into the second container (9). Device according to one of the preceding claims, wherein the Transport means two conveyor belts pressed against each other (2, 3) comprising, in the form of a semicircle, through the first container (1) are guided and in particular by means of a semicircle arranged rollers (4). Device according to one of the preceding claims at least one spray tube (11) in the first container with which transported paper is sprayed with liquid or washed around can, which is preferably arranged so that transported Paper after or when leaving the first tray under With the help of the spray tube can be released from the envelope. Device according to one of the preceding claims Photosensors and a connected evaluation unit, so that Paper that is transported through the first container is detected specifically in terms of quantity. Device according to one of the preceding claims, wherein the Wrapping is a bag whose walls in particular. Device for the preservation of pressure and Paper products according to one of the preceding claims, which the edges of the cover are sewn and / or welded. Device for the preservation of pressure and Paper products according to one of the preceding claims, the first container and the means of transport part of one Photo paper developing machine is. Device according to one of the preceding claims with a the first container downstream drying device, the in particular a preferably air-permeable conveyor belt for Includes the paper that got wet in the first container. Device according to one of the preceding claims with a Ironing device with which the paper is finally ironed can. Using a photo paper developing machine with the Features according to one of the preceding claims for the Preservation of printed and paper products. Use according to the preceding claim, wherein the Photo paper developing machine includes a pocket in which the print and paper product to be preserved during the Preservation located.

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