EP0557013A1 - Dispositif de tampon capable d'effectuer la perforation d'un papier stencil thermique - Google Patents

Dispositif de tampon capable d'effectuer la perforation d'un papier stencil thermique Download PDF

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Publication number
EP0557013A1
EP0557013A1 EP93300994A EP93300994A EP0557013A1 EP 0557013 A1 EP0557013 A1 EP 0557013A1 EP 93300994 A EP93300994 A EP 93300994A EP 93300994 A EP93300994 A EP 93300994A EP 0557013 A1 EP0557013 A1 EP 0557013A1
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EP
European Patent Office
Prior art keywords
image
recording sheet
sheet
stamp
stamp device
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
EP93300994A
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German (de)
English (en)
Other versions
EP0557013B1 (fr
Inventor
Tsuneo c/o Brother Kogyo Kabushiki Kaisha Yasui
Takemi c/o Brother Kogyo Kabushiki K. Yamamoto
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.)
Brother Industries Ltd
Original Assignee
Brother Industries Ltd
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Filing date
Publication date
Application filed by Brother Industries Ltd filed Critical Brother Industries Ltd
Publication of EP0557013A1 publication Critical patent/EP0557013A1/fr
Application granted granted Critical
Publication of EP0557013B1 publication Critical patent/EP0557013B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41K—STAMPS; STAMPING OR NUMBERING APPARATUS OR DEVICES
    • B41K1/00—Portable hand-operated devices without means for supporting or locating the articles to be stamped, i.e. hand stamps; Inking devices or other accessories therefor
    • B41K1/32—Portable hand-operated devices without means for supporting or locating the articles to be stamped, i.e. hand stamps; Inking devices or other accessories therefor for stencilling

Definitions

  • the present invention relates to a stamp device for forming an image on a thermal stencil paper and transferring the image to a recording paper and, more particularly, to a stamp device enabling an operator to confirm the image to be formed on the thermal stencil paper.
  • a rubber stamp is conventionally used to print various representations such as an address and name of a person or company. Such a rubber stamp is useful and convenient in the case of repeatedly printing the same characters.
  • Another type of printing device is a depression type stamp device employing a thermal stencil paper. This device will now be described with reference to the drawings.
  • Fig. 9 is a perspective view of a previously proposed stamp device 1.
  • the stamp device 1 includes a keyboard 10, a body 11, a stamp 12, and a liquid crystal display (which will be hereinafter referred simply to as a "display") 14 having the predetermined number of display columns.
  • the keyboard 10 includes a character key 42 for inputting characters such as Japanese "kana” character and alphabet, and also includes various function keys such as a stamp original creating key.
  • the body 11 is constituted of a stencil paper holding section 15, an original creating section 16, a stamp holding section 17, and a control section 18.
  • the stamp 12 is constituted of a grip 13, a stamp body 28, a spring 29, and an ink pad 30.
  • the original creating section 16 includes a thermal head 19 as heating means.
  • the thermal head 19 is pressed against a platen roller 20.
  • a thermal stencil paper (which will be hereinafter referred simply to as a "stencil paper") 24 is drawn by a stencil paper drawing roller 21, and is fed by stencil paper feeding roller pairs 22 to between the thermal head 19 and the platen roller 20.
  • the stencil paper 24 is thermally perforated by the thermal head 19, it is further fed by the stencil paper feeding roller pairs 22 and stencil paper feeding rollers 23 to under the stamp 12.
  • the stamp body 28 of the stamp 12 is secured to a supporting member (not shown) with a gap 27 defined between the ink pad 30 and the stencil paper feeding rollers 23 in the stamp holding section 17.
  • the thermally perforated stencil paper 24 is fed by the stencil paper feeding roller pairs 22 and the stencil paper feeding rollers 23 by a predetermined amount so as to come to just under the ink pad 30.
  • the stencil paper 24 is formed by bonding a thermoplastic film to a porous carrier.
  • the stencil paper 24 is used under the condition where the thermoplastic film side is adapted to contact the thermal head 19. As shown in Figs. 10 and 11, a frame 25 is bonded onto the stencil paper 24.
  • the thermal head 19 has a head body provided with a heat generating element array.
  • the heat generating element array consists of a plurality of heat generating elements, e.g., 96 heat generating elements are arranged in line in the stamp device 1. These heat generating elements are arranged adjacent to each other in a direction perpendicular to a feeding direction of the stencil paper 24.
  • the heat generating element array is driven at a predetermined timing in accordance with feed of the stencil paper 24 to thereby thermally perforate the stencil paper 24 according to data input from the keyboard 10.
  • the keyboard 10 is connected to an input interface 58 in a microcomputer 56.
  • the input interface 58 is connected through a bus line 60 to a CPU 62, a ROM 64, a RAM 66, a character generator (CG-ROM) 68 for thermal perforation of the stencil paper 24, a character generator (CG-ROM) 69 for display, and an output interface 70.
  • CG-ROM character generator
  • CG-ROM character generator
  • the ROM 64 includes a program memory 71 previously storing a program for controlling the whole operation of the stamp device 1 and a dictionary memory 72 to be used for kana/kanji conversion where Japanese "kana" characters are converted into Chinese “kanji” characters or the like.
  • the RAM 66 includes an input buffer 73 for storing data input from the keyboard 10, a thermal perforation buffer 74 and a shift register 75 for storing data for thermal perforation of the stencil paper 24, and other necessary counters and registers.
  • the CG-ROM 68 serves to generate dot patterns according to code data of characters input, and the CG-ROM 69 serves to generate dot patterns to be displayed on the display 14.
  • a head driving circuit 76, a motor driving circuit 77 and a display driving circuit 78 are connected to the output interface 70.
  • the thermal head 19, paper feeding motors 32 and the display 14 are connected to the circuits 76, 77 and 78, respectively.
  • step S1 (which will be hereinafter referred simply to as "S1", and the other steps will also similarly referred).
  • S1 a string of characters is input from the keyboard 10 with the characters displayed on the display 14. That is, data for therma! perforation is input from the character key 42, and it is stored into the input buffer 73 in S2, S3 and S4.
  • S5 the characters corresponding to the thermal perforation data are displayed on the display 14 through the CG-ROM 69.
  • S7 is executed after S2 and S6, in which the dot patterns generated in the CG-ROM 68 according to the code data input are developed in the thermal perforation buffer 74. Then, the program proceeds to S8 in which the dot patterns developed in the thermal perforation buffer 74 are transferred by every row of dots to the shift register 75 to thermally perforate the stencil paper 24 in accordance with the row of dots.
  • S9 it is determined whether or not all the thermal perforation data have been output to the stencil paper 24, and the steps of S8 and S9 are repeated to finally obtain the result of thermal perforation constituted of 96 dots over the length of the heat generating element array. At this time, the thermally perforated stencil paper 24 is fed by the stencil paper feeding roller pairs 22 and the stencil paper feeding rollers 23 in a direction D shown in Fig. 8.
  • the ink pad 30 comes into contact with the stencil paper 24. Owing to the viscosity of ink impregnated in the ink pad 30, the stencil paper 24 adheres to the ink pad 30. Then, the stamp 12 is pulled out of the stamp holding section 17 of the body 11 of the stamp device 1 by holding the grip 13. Thereafter, the grip 13 of the stamp 12 is depressed toward a recording paper 35 in a direction H shown in Fig. 14, and the ink impregnated in the ink pad 30 is supplied to the stencil paper 24. As a result, a part of the ink at a thermally perforated portion only of the stencil paper 24 is allowed to reach the recording paper 35, thus forming an image on the recording paper 35 as shown in Fig. 15.
  • An object of the present invention is to provide a stamp device which enables the stamp image to be confirmed without wasting the stencil paper.
  • a stamp device including storing means for storing image data representing an image, first heating means for generating heat based on the image data stored by the storing means, stencil paper feeding means for feeding the first heating means with a thermal stencil paper which is thermally perforated by heat generated by the first heating means, and recording sheet feeding means for feeding the first heating means with a thermal recording sheet which is visibly recorded by heat generated by the first heating means, wherein the thermal recording sheet is used to confirm the image to be perforated on the thermal stencil paper before thermally perforating the thermal stencil paper.
  • stamp device image data representing an image such as an arbitrary figure or string of characters are stored in the storing means. Then, the thermal recording sheet is fed to the first heating means by the recording sheet feeding means. A dot image corresponding to the stored image data is thermally formed on the thermal recording sheet by the first heating means. After confirming the image thus recorded on the thermal recording sheet, the thermal stencil paper is fed to the first heating means by the stencil paper feeding means. The thermal stencil paper is thermally perforated by the first heating means to form the dot image corresponding to the stored image data. Then, the thermal stencil paper thus perforated to have the image is attached to a stamp. Then, the stamp is depressed on a recording paper to transfer the image from the thermal stencil paper to the recording paper.
  • a reversible thermal recording sheet (which will be hereinafter referred simply to as a "reversible sheet") 101 with reference to Figs. 3, 4 and 5.
  • a reversible sheet is known as a thermo-chromic in Japanese Patent Laid-open No. Sho 63-39377, for example.
  • Fig. 3 which is a sectional view of the reversible sheet 101, a recording layer 103 is formed on a transparent polyester film 102, and an overcoat layer 105 is formed on the recording layer 103, so as to protect the same.
  • the recording layer 103 is constituted of resin and organic low-molecular substance 104 dispersed in the resin.
  • Fig. 4 shows a transparent condition and a white opaque condition of the reversible sheet 101.
  • each particle of the organic low-molecular substance 104 in the reversible sheet 101 is formed as a relatively large monocrystal, so that light incident into the reversible sheet 101 passes an interface of the crystal few times and is transmitted through the recording layer 101 without scattering. Therefore, the recoding layer looks transparent as a whole.
  • each particle of the organic low-molecular substance 104 in the reversible sheet 101 is formed as a polycrystal, so that light incident into the reversible sheet 101 is refracted at the interface of the crystal many times and is scattered. Therefore, the recording layer, 101 looks white opaque as a whole.
  • Fig. 5 shows a heat reversible characteristic of the reversible sheet 101.
  • a transmittance of the reversible sheet 101 starts to increase at a temperature A and reaches a maximum at a temperature B. Thereafter, even when the reversible sheet 101 is cooled to the room temperature, the transparent condition is maintained. This is due to the fact that the organic low-molecular substance 104 changes from the white opaque condition of the polycrystal to a semi-molten condition during the increase from the temperature A to the temperature B, and the crystal grows to become the transparent condition of the monocrystal upon cooling from the temperature B to the room temperature.
  • the reversible sheet 101 in the transparent condition is heated again to a temperature D or higher, an intermediate condition between the maximum transparent condition and the maximum white opaque condition is obtained.
  • the initial white opaque condition is restored. This is due to the fact that the organic low-molecular substance 104 is molten at the temperature D or higher, and the polycrystal is deposited during cooling down to the room temperature.
  • the temperatures A, B and D are preferably set to about 50 degrees, about 56-68 degrees and about 72 degrees, respectively.
  • the reversible sheet 101 is heated by a thermal head 19 to record an image.
  • the transparent condition and the white opaque condition for every picture element of the image can be set by changing energy to be applied to the picture element which depends on a resolution of the thermal head 19.
  • a colored layer 106 is located under the transparent polyester film 102, so as to intensify a contrast of the image recorded on the reversible sheet 101. That is, the colored layer 106 functions to make a transparent portion of the reversible sheet 101 contrast with a white opaque portion of the reversible sheet 101.
  • the colored layer 106 is black and where the image is formed by the transparent portion with the white opaque portion left as the background, the image looks black on the white background as viewed from the upper side. Conversely, the image may be formed by the white opaque portion with the transparent portion left as the background.
  • the same effect can be obtained.
  • a stamp device 80 employing the above-mentioned reversible sheet 101 according to the preferred embodiment.
  • Fig. 2 is a perspective view of the stamp device 80
  • Fig. 1 is a cross section taken along the line E-E in Fig. 2. It is to be noted that the same parts as those described in the background relating to the parent application and shown in Figs. 8-15 are denoted by the same reference numerals and the explanation thereof will be omitted hereinafter.
  • the stamp device 80 includes a keyboard 10, a body 82, a stamp 12 and a display 14.
  • the body 82 is constituted of a stencil paper holding section 15a, a reversible sheet holding section 15b, an original creating section 16, a stamp holding section 17, a control section 18 and a heating roller section 84.
  • the stencil paper holding section 15a and the reversible sheet holding section 15b are provided with a stencil paper drawing roller 21a and a reversible sheet drawing roller 21b, respectively.
  • the stencil paper 24 and the reversible sheet 101 are adapted to be drawn by the stencil paper drawing roller 21a and the reversible sheet drawing roller 21b, respectively.
  • the stencil paper 24 and the reversible sheet 101 thus drawn are adapted to be fed by stencil paper feeding roller pairs 22 and be heated by the thermal head 19. Thereafter, they are adapted to be further fed by stencil paper feeding rollers 23 in a direction D shown in Fig. 1. At the time the stencil paper 24 comes to a position just under an ink pad 30, the feeding of the stencil paper 24 is stopped.
  • the reversible sheet 101 after being heated by the thermal head 19 passes through the stamp holding section 17, and is further fed by reversible sheet feeding rollers 91 to be discharged from a discharge opening 92 formed on a side surface of the body 82.
  • the construction of the parts other than the heating roller section 84 is substantially the same as that in the parent application described in the background and shown in Figs. 8-15, and so the detailed explanation of the same parts will be omitted hereinafter.
  • the heating roller section 84 is constituted of sheet guides 86 and 87 for smoothing the feeding of the reversible sheet 101 and a heating roller pair 90 having a heating device 88 in one roller at a central portion thereof.
  • the keyboard 10 is connected to an input interface 58 in a microcomputer 56.
  • the input interface 58 is connected through a bus line 60 to a CPU 62, a ROM 64, a RAM 66, a character generator (CG-ROM) 68 for thermal perforation of the stencil paper 24, a character generator (CG-ROM) 69 for display, and an output interface 98.
  • CG-ROM character generator
  • CG-ROM character generator
  • the ROM 64 includes a program memory 71 previously storing a program for controlling the whole operation of the stamp device 80 and a dictionary memory 72 to be used for kana/kanji conversion or the like.
  • the RAM 66 includes an input buffer 73 for storing data input from the keyboard 10, a thermal perforation buffer 74 and a shift register 75 for storing data for thermal perforation of the stencil paper 24, and other necessary counters and registers.
  • the CG-ROM 68 serves to generate dot patterns according to code data of characters input, and the CG-ROM 69 serves to generate dot patterns to be displayed on the display 14.
  • a head driving circuit 76, a motor driving circuit 77, a display driving circuit 78, a heating roller driving circuit 97 and a heating device driving circuit 96 are connected to the output interface 98.
  • the thermal head 19 paper feeding motors 32, the display 14, the heating roller pair 90 and the heating device 88 are connected to the circuits 76, 77, 78, 97 and 96, respectively.
  • the paper feeding motors 32 are so provided as to correspond to the stencil paper drawing roller 21a, the reversible sheet drawing roller 21b, the stencil paper feeding roller pairs 22, the stencil paper feeding rollers 23 and the reversible sheet feeding rollers 91.
  • step S1 When power is applied to the stamp device 80, the buffers, registers, etc. in the RAM 66 are initialized, and the others are also initialized in step S1 (which will be hereinafter referred simply to as "S1", and the other steps will also similarly referred). Then, a string of characters is input from the keyboard 10 with the characters displayed on the display 14. That is, data for thermal perforation is input from the character key 42, and it is stored into the input buffer 73 in S2, S3 and S4. At the same time, in S5, the characters corresponding to the thermal perforation data are displayed on the display 14 through the CG-ROM 69.
  • the program proceeds to S32 in which the dot patterns developed in the thermal perforation buffer 74 are transferred by every row of dots to the shift register 75 to thermally record the row of dots on the reversible sheet 101.
  • S33 it is determined whether or not all the data have been recorded on the reversible sheet 101, and the steps of S32 and S33 are repeated to finally obtain the result of thermal recording constituted of 96 dots over the length of the heat generating element array.
  • the thermally recorded reversible sheet 101 is fed by the stencil paper feeding roller pairs 22 and the stencil paper feeding rollers 23 in a direction D shown in Fig. 1.
  • the reversible sheet 101 After passing through the stamp holding section 17, the reversible sheet 101 is further fed and discharged from the discharge opening 92 to the outside of the stamp device 80 by the reversible sheet feeding rollers 91.
  • the reversible sheet 101 is vertically oriented so that the recording layer 103 side of the reversible sheet 101 may contact the thermal head 19.
  • the stencil paper 24 as the original for printing is created. That is, when the original creating key is depressed, the stencil paper drawing roller 21a is driven to draw the stencil paper 24 from the stencil paper holding section 15a, and the stencil paper 24 is fed by the stencil paper feeding roller pairs 22.
  • the subsequent operation is the same as that described in the background with respect to the parent application and shown in Figs. 8-15, and so the explanation thereof will be omitted hereinafter.
  • the image thermally recorded on the reversible sheet 101 is unsatisfactory, the image is erased in the following manner. That is, the reversible sheet 101 is supplied to the sheet guide 86. In this condition, when an erasing key is depressed (S12), the program proceeds through S2 and S12 to S13, in which the heating roller pair 90 starts to be rotated (S13), and the heating device 88 is heated (S14). The reversible sheet 101 is fed by the heating roller pair 90 heated to the temperature D or higher, and passes through the heating roller pair 90. As a result, the image thermally recorded on the reversible sheet 101 is thermally erased owing to the above-mentioned principle (S15).
  • the reversible sheet 101 in which the image previously recorded has been erased is discharged to the reversible sheet holding section 15b. Then, the heating device 88 is turned off (S16), and the heating roller pair 90 stops rotating (S17). In the above operation, the reversible sheet 101 is vertically oriented so that the recording layer 103 side of the reversible sheet 101 may contact the roller of the heating roller pair 90 in which the heating device 88 is provided, that is, the lower roller as viewed in Fig. 1.
  • the data is edited again by using the keyboard 10 and is similarly thermally recorded on the reversible sheet 101.
  • This operation is repeated many times until a satisfactory stamp image is obtained.
  • the reversible sheet 101 is durable and withstands frequently repeated thermal recording and erasing, so that the stamp image can be surely confirmed before carrying out the thermal perforation of the stencil paper 24, and the stencil paper 24 can be effectively used without waste.
  • the heat generating element array is constituted of 96 heat generating elements in the above preferred embodiment, the number of the heat generating elements may be arbitrarily changed.
  • the stencil paper 24 attached to the ink pad 30 of the stamp 12 is peeled off, and the stamp 12 is then set in the stamp holding section 17 of the body 82 of the stamp device 80. Thereafter, a new stamp original is created in the same manner as the above. Further, the stencil paper 24 after printing may be preserved for the purpose of reuse at any time. Accordingly, it is unnecessary to re-create a new original having the same stamp image as that of the stencil paper 24 previously created, thus improving the economy of the system.
  • keyboard 10 of the stamp device 80 is employed as the inputting means in the above preferred embodiment
  • data such as characters or marks may be input from a personal computer or the like to a receiving terminal (not shown) of the stamp device 80.
  • a stamp image may be formed in the same procedure as the above.
  • the thermal head 19 may be used to erase the image so that the energy to be applied to the thermal head 19 is suitably changed.
  • a conventional thermal recording sheet on which a non-erasable image is recorded by heat may be used instead of the reversible sheet.
  • Conventional thermal recording sheets are cheaper than stencil paper, and therefore the cost of using conventional thermal recording sheets in the device is much lower than using stencil paper.
  • an original for printing can be simply created by inputting data such as characters or figures intended to be printed and thermally perforating the thermal stencil paper.
  • the thermal recording on the reversible thermal recording sheet for confirmation of a stamp image and the thermal perforation through the thermal stencil paper for creation of a stamp original can be carried out by using the single thermal head.
  • the data previously recorded on the reversible thermal recording sheet can be erased by using the heating roller to carry out frequently repeated thermal recording and erasing of data on the recording sheet, thus decreasing a cost for the recording sheet, avoiding wasteful use of the thermal stencil paper, and decreasing cost for the stamp device.

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  • Manufacture Or Reproduction Of Printing Formes (AREA)
EP19930300994 1992-02-21 1993-02-11 Dispositif de tampon capable d'effectuer la perforation d'un papier stencil thermique Expired - Lifetime EP0557013B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP34961/92 1992-02-21
JP3496192A JPH05229089A (ja) 1992-02-21 1992-02-21 スタンプ装置

Publications (2)

Publication Number Publication Date
EP0557013A1 true EP0557013A1 (fr) 1993-08-25
EP0557013B1 EP0557013B1 (fr) 1996-07-10

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EP19930300994 Expired - Lifetime EP0557013B1 (fr) 1992-02-21 1993-02-11 Dispositif de tampon capable d'effectuer la perforation d'un papier stencil thermique

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EP (1) EP0557013B1 (fr)
JP (1) JPH05229089A (fr)
DE (1) DE69303511T2 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0722842A2 (fr) * 1994-12-28 1996-07-24 Brother Kogyo Kabushiki Kaisha Cassette pour loger des feuilles en paier thermosensible
WO1998024632A2 (fr) * 1996-12-02 1998-06-11 Ulrich Electronic Gmbh Dispositif pour l'application thermique d'informations et support d'information

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0493965A1 (fr) * 1990-12-29 1992-07-08 Brother Kogyo Kabushiki Kaisha Dispositif de tampon utilisant du papier stencil thermosensible destiné à être perforé par la chaleur d'une tête d'impression thermique

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0493965A1 (fr) * 1990-12-29 1992-07-08 Brother Kogyo Kabushiki Kaisha Dispositif de tampon utilisant du papier stencil thermosensible destiné à être perforé par la chaleur d'une tête d'impression thermique

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 12, no. 142 (M-692)30 April 1988 & JP-A-62 264 995 ( FUJI XEROX CO. LTD ) 17 November 1987 *
PATENT ABSTRACTS OF JAPAN vol. 16, no. 34 (M-1204)28 January 1992 & JP-A-32 43 387 ( PILOT CORP:THE ) 30 October 1991 *

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0722842A2 (fr) * 1994-12-28 1996-07-24 Brother Kogyo Kabushiki Kaisha Cassette pour loger des feuilles en paier thermosensible
EP0722842A3 (fr) * 1994-12-28 1996-08-07 Brother Kogyo Kabushiki Kaisha Cassette pour loger des feuilles en paier thermosensible
WO1998024632A2 (fr) * 1996-12-02 1998-06-11 Ulrich Electronic Gmbh Dispositif pour l'application thermique d'informations et support d'information
WO1998024632A3 (fr) * 1996-12-02 1998-10-15 Ewald Ulrich Dispositif pour l'application thermique d'informations et support d'information
US6313856B1 (en) 1996-12-02 2001-11-06 Ulrich Electronic Gmbh Device for thermal application of information and information carrier

Also Published As

Publication number Publication date
DE69303511T2 (de) 1996-12-12
JPH05229089A (ja) 1993-09-07
EP0557013B1 (fr) 1996-07-10
DE69303511D1 (de) 1996-08-14

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