EP1211352A1 - Appareil pour la préservation du papier - Google Patents

Appareil pour la préservation du papier Download PDF

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Publication number
EP1211352A1
EP1211352A1 EP01113770A EP01113770A EP1211352A1 EP 1211352 A1 EP1211352 A1 EP 1211352A1 EP 01113770 A EP01113770 A EP 01113770A EP 01113770 A EP01113770 A EP 01113770A EP 1211352 A1 EP1211352 A1 EP 1211352A1
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EP
European Patent Office
Prior art keywords
paper
bath
container
paper sheets
transport
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.)
Granted
Application number
EP01113770A
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German (de)
English (en)
Other versions
EP1211352B1 (fr
Inventor
Gerd Wienen
Helmut Kraft
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.)
Individual
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Individual
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Filing date
Publication date
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Priority claimed from EP00124868A external-priority patent/EP1209288A1/fr
Application filed by Individual filed Critical Individual
Priority to EP20010113770 priority Critical patent/EP1211352B1/fr
Priority to DE20122330U priority patent/DE20122330U1/de
Publication of EP1211352A1 publication Critical patent/EP1211352A1/fr
Application granted granted Critical
Publication of EP1211352B1 publication Critical patent/EP1211352B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H25/00—After-treatment of paper not provided for in groups D21H17/00 - D21H23/00
    • D21H25/18—After-treatment of paper not provided for in groups D21H17/00 - D21H23/00 of old paper as in books, documents, e.g. restoring
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H23/00—Processes or apparatus for adding material to the pulp or to the paper
    • D21H23/02—Processes or apparatus for adding material to the pulp or to the paper characterised by the manner in which substances are added
    • D21H23/22—Addition to the formed paper
    • D21H23/66—Treating discontinuous paper, e.g. sheets, blanks, rolls
    • D21H23/68—Treating discontinuous paper, e.g. sheets, blanks, rolls whereby the paper moves continuously

Definitions

  • 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.
  • 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.
  • 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.
  • an organomagnesium compound such as, for example Treated methyl magnesium carbonate in a suitable solvent.
  • 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.
  • photo paper developing machines are from the prior art known with which papers are transported in and out of the solutions.
  • 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 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.
  • 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.
  • 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.
  • the device acting as a protective cover 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.
  • the walls of those acting as a protective cover Device for example the two straps or that of the bag permeable to liquids his.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • the paper is passed through transport rollers in a continuous dryer for example moving past an infrared heater.
  • 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.
  • the device comprises a first container for the absorption of a liquid, i.e. a bath.
  • a liquid i.e. a bath.
  • the liquid works the preservation of the paper. Paper is transported through the bathroom as follows:
  • 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.
  • next conveyor belt 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.
  • 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.
  • a type of automatic ironing machine At the end of the conveyor belt, which runs through the dryer, is in one Embodiment provided a type of automatic ironing machine.
  • 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
  • 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.
  • Check valve arranged in the supply from the further container into the bath.
  • 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.
  • 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.
  • 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.
  • photocells are arranged in the holes.
  • the paper is made using the photocells detects which gets into the machine.
  • an evaluation device it is determined how much paper or how many square meters of paper the machine is fed.
  • 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.
  • the paper for example, 3 Minutes later to the dryer.
  • the time can of course vary individually.
  • 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.
  • 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.
  • 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.
  • 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.

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  • Paper (AREA)
  • Packaging Of Special Articles (AREA)
EP20010113770 2000-11-15 2001-06-05 Appareil pour la préservation du papier Expired - Lifetime EP1211352B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP20010113770 EP1211352B1 (fr) 2000-11-15 2001-06-05 Appareil pour la préservation du papier
DE20122330U DE20122330U1 (de) 2000-11-15 2001-06-05 Konstruktion zur Papierkonservierung

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP00124868A EP1209288A1 (fr) 2000-11-15 2000-11-15 Appareil pour la préservation du papier
EP00124868 2000-11-15
EP20010113770 EP1211352B1 (fr) 2000-11-15 2001-06-05 Appareil pour la préservation du papier

Publications (2)

Publication Number Publication Date
EP1211352A1 true EP1211352A1 (fr) 2002-06-05
EP1211352B1 EP1211352B1 (fr) 2005-11-16

Family

ID=26071594

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20010113770 Expired - Lifetime EP1211352B1 (fr) 2000-11-15 2001-06-05 Appareil pour la préservation du papier

Country Status (2)

Country Link
EP (1) EP1211352B1 (fr)
DE (1) DE20122330U1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105970736A (zh) * 2016-06-14 2016-09-28 邝井卫 鞭炮纸造纸机
CN112391872A (zh) * 2019-08-16 2021-02-23 鼎纳科技有限公司 一种大型图书脱酸系统的实现方法

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH131376A (de) * 1928-05-01 1929-02-15 Heinrich Wild Vorrichtung für die Behandlung von Papieren und Filmen in Flüssigkeiten.
DE725767C (de) * 1940-11-06 1942-09-29 Jagenberg Werke Ag Impraegnierter Zuschnitt aus Papier, Karton, Pappe o. dgl. und seine Herstellung
FR1171758A (fr) * 1957-04-19 1959-01-29 Appareil pour le développement de films ou papiers photographiques
US3503319A (en) * 1967-11-24 1970-03-31 Werner W Buechner Carrier for the wet treatment of photographic materials
US3745898A (en) * 1968-12-03 1973-07-17 Ricoh Kk Electrostatic image developing device
US4119991A (en) * 1977-04-08 1978-10-10 Peter Vincent Martino Horizontal one step automatic plate processor
US4232691A (en) * 1978-02-07 1980-11-11 Sidney Grant Processing of sheet material in a liquid bath
DE3535116A1 (de) * 1985-10-02 1987-04-09 Paschmann Rolf Durchlauf-entwicklungsmaschine zur nassbehandlung fotografischer schichttraeger
DE4000114C1 (fr) * 1990-01-04 1991-03-28 Agfa-Gevaert Ag, 5090 Leverkusen, De
US5422147A (en) * 1993-08-12 1995-06-06 Preservation Technologies, Inc. Method and apparatus for the deacidification of library materials
DE19612368A1 (de) * 1996-03-28 1997-10-02 Univ Schiller Jena Flexibles System zur Massenrestaurierung von Archiv- und Bibliotheksbeständen

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH131376A (de) * 1928-05-01 1929-02-15 Heinrich Wild Vorrichtung für die Behandlung von Papieren und Filmen in Flüssigkeiten.
DE725767C (de) * 1940-11-06 1942-09-29 Jagenberg Werke Ag Impraegnierter Zuschnitt aus Papier, Karton, Pappe o. dgl. und seine Herstellung
FR1171758A (fr) * 1957-04-19 1959-01-29 Appareil pour le développement de films ou papiers photographiques
US3503319A (en) * 1967-11-24 1970-03-31 Werner W Buechner Carrier for the wet treatment of photographic materials
US3745898A (en) * 1968-12-03 1973-07-17 Ricoh Kk Electrostatic image developing device
US4119991A (en) * 1977-04-08 1978-10-10 Peter Vincent Martino Horizontal one step automatic plate processor
US4232691A (en) * 1978-02-07 1980-11-11 Sidney Grant Processing of sheet material in a liquid bath
DE3535116A1 (de) * 1985-10-02 1987-04-09 Paschmann Rolf Durchlauf-entwicklungsmaschine zur nassbehandlung fotografischer schichttraeger
DE4000114C1 (fr) * 1990-01-04 1991-03-28 Agfa-Gevaert Ag, 5090 Leverkusen, De
US5422147A (en) * 1993-08-12 1995-06-06 Preservation Technologies, Inc. Method and apparatus for the deacidification of library materials
DE19612368A1 (de) * 1996-03-28 1997-10-02 Univ Schiller Jena Flexibles System zur Massenrestaurierung von Archiv- und Bibliotheksbeständen

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105970736A (zh) * 2016-06-14 2016-09-28 邝井卫 鞭炮纸造纸机
CN112391872A (zh) * 2019-08-16 2021-02-23 鼎纳科技有限公司 一种大型图书脱酸系统的实现方法
CN112391872B (zh) * 2019-08-16 2022-10-11 鼎纳科技有限公司 一种大型图书脱酸系统的使用方法

Also Published As

Publication number Publication date
EP1211352B1 (fr) 2005-11-16
DE20122330U1 (de) 2005-04-14

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