EP0000069B1 - Barrette d'impression d'une image - Google Patents

Barrette d'impression d'une image Download PDF

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Publication number
EP0000069B1
EP0000069B1 EP78100128A EP78100128A EP0000069B1 EP 0000069 B1 EP0000069 B1 EP 0000069B1 EP 78100128 A EP78100128 A EP 78100128A EP 78100128 A EP78100128 A EP 78100128A EP 0000069 B1 EP0000069 B1 EP 0000069B1
Authority
EP
European Patent Office
Prior art keywords
plates
contact
plate
printing
contact terminal
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.)
Expired
Application number
EP78100128A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0000069A1 (fr
Inventor
Marcel Yvard
Jean-Claude Decuyper
Michel Beduchaud
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.)
Alcatel CIT SA
Original Assignee
Compagnie Industrielle de Telecommunication CIT Alcatel SA
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Compagnie Industrielle de Telecommunication CIT Alcatel SA filed Critical Compagnie Industrielle de Telecommunication CIT Alcatel SA
Publication of EP0000069A1 publication Critical patent/EP0000069A1/fr
Application granted granted Critical
Publication of EP0000069B1 publication Critical patent/EP0000069B1/fr
Expired legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D15/00—Component parts of recorders for measuring arrangements not specially adapted for a specific variable
    • G01D15/06—Electric recording elements, e.g. electrolytic
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/385—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by selective supply of electric current or selective application of magnetism to a printing or impression-transfer material
    • B41J2/39—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by selective supply of electric current or selective application of magnetism to a printing or impression-transfer material using multi-stylus heads
    • B41J2/395—Structure of multi-stylus heads
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/024—Details of scanning heads ; Means for illuminating the original
    • H04N1/032—Details of scanning heads ; Means for illuminating the original for picture information reproduction

Definitions

  • the present invention relates to a bar for printing an image on sensitive paper.
  • the printing bar is, in particular, used in a document reproduction station, belonging to a facsimile transmission installation.
  • the reproduction of an analyzed document whose content is transmitted to the reproduction station is ensured by a print head or bar, sweeping over a selected sensitive paper, along successive lines.
  • the head or strip is excited by the information signal received by the reproduction station and defining the content of the line scanned for printing the successive image points, along the scan line considered.
  • the formation of image points on paper therefore of points of variable density, consists in triggering, by reaction, a localized modification of the paper used, so as to obtain a variation in its optical appearance, for example a coloring.
  • the paper used at the receiving station can therefore be, for example, electro-sensitive, electro-catalytic or heat-sensitive.
  • the paper used being, for example, electro-catalytic, the impression of an image point is obtained by localized application on the paper of a stylus made of catalyst material chosen as a function of the paper and by passing an electric current between the stylus and the paper: this causes catalysis accompanied by a change in the coloring of the paper.
  • the paper may consist of an outer layer of sensitive material, a conductive underlay and a base paper supporting them.
  • the stylus can for example be silver or covered with silver; it comes to bear on the outer layer.
  • Printing of a full line of image may be accomplished by moving the single pen print head along the scan line of the paper.
  • Printing of a complete scan line can also be obtained by a printing bar having as many printing pens as there are image points in the line.
  • the bar is static relative to the scan line considered, only a relative step-by-step movement of the paper and the bar will remain.
  • the present invention relates to the latter type of printing strip.
  • Document GB-A-1 468 258 discloses a printing bar of the latter type in which the styli are addressed individually by means of diode addressing matrices from two series of control generators.
  • the bar comprises two assemblies: one constitutes a print head equipped with the respective electrodes and conductors for connection, the other constitutes the addressing matrices of styli with pairs of discrete components, diode and resistor, connected respectively to two orthogonal networks of conductors forming the rows and columns of matrices and leading to contact terminals for the two series of control generators.
  • the electrical connection between these two assemblies is ensured by respective links between the diode-resistance pairs and the connection conductors.
  • Document DE-A-2 640 048 also discloses a printing bar of this same type with individual stylus control.
  • This strip is formed by a stack of conductive plates insulated from each other and of which a first end of each of them forms one of the styli and of which a second substantially opposite end forms a control terminal for the stylus of the plate considered. .
  • the object of the present invention is to produce a printing bar of the aforementioned type with arrays with addressing diodes of styluses of compact structure in which the components of the arrays are fully integrated and protected and mounted to directly obtain the suitable electrical connections.
  • the stylus addressing matrices are therefore integrated in the printing bar, at the level of the plates carrying or including the styli.
  • the printing bar which will be described with reference to the appended drawing is intended for developing an image on sensitive paper, the printing of the image being obtained by scanning the paper along successive lines and printing successive image points along each line.
  • the printing bar is part of a facsimile reproduction unit, it is mechanically static, the sensitive paper on which the image is scrolled step by step, under the action of known drive means, facing the bar for printing successive scanning lines of the paper.
  • the description of the illustrated printing bar is given within the framework of a facsimile reproduction unit allowing an image definition of 1728 points per scanning line of the 216 mm paper.
  • the paper chosen is of the electro-catalytic type generally having a high sensitivity, that is to say simply requiring a low energy for its printing. For example, it has a clear initial appearance, the impression is obtained by coloring.
  • FIG. 1 there is shown schematically an arrangement of the elements constituting such a printing bar.
  • the strip consists of plates 1.
  • the plates 1, one of which is shown in FIG. 2, have an electrically conductive face 2, the other face 3 is electrically insulating.
  • the plates are advantageously made of metal which is a good electrical conductor and are covered on one of their faces by an insulating deposit or varnish, this face being the insulating face 3.
  • One end 10 of each plate is pointed and is covered with a layer of well-defined catalyst material, for example silver, to form a printing stylus also identified and designated below under the reference 10.
  • the total wafer will be made of material having catalytic properties.
  • the strip consists of a stack of conductive plates 1, electrically isolated from each other. This stacking, appearing in FIGS. 3 and 4, is carried out on two insulating pins 4 and 5 passing through the plates, at the level of two holes 6 and 7 provided identically in each plate. These pins ensure the positioning of the plates between two extreme insulating holding flanges 8 and 9.
  • the plates 1, thus stacked, extend over the length of each scanning line of the paper, that is to say 216 mm.
  • the bar can be adjusted according to a longitudinal generator and has, if necessary, at the ends 10 or printing styli, a rounded profile (not illustrated), so as to form a correct alignment of the styli arranged at the definition point of the image points to be printed on along a scan line of the paper.
  • the printing bar thus formed includes a stylus addressing circuit.
  • This addressing circuit is integrated in the bar, at the level of the plates.
  • each plate 1 has a first cut 11, at the end opposite the tip constituting the stylus 10, and a second lateral cut 12.
  • These cutouts 11 and 12 are rectangular and are open to the outside of the wafer.
  • a first conductive piece 13 is inserted in the cutout 11.
  • a second conductive piece 14 is also inserted in the cutout 12.
  • These two pieces 13 and 14 are of generally rectangular shape and have the same thickness as the plates; they are electrically isolated from the wafer which receives them, for example by an adhesive, a deposit or insulating varnish covering their edges, as shown diagrammatically. They are held in the wafer either by the aforementioned adhesive, or by the simple assembly of the wafers during the constitution of the bar. They both end with a contact tail 15 or 16 projecting beyond the plate serving as an electrical connection point.
  • These parts 13 and 14 equipped with contact tail 15 or 16 are hereinafter called first contact terminal and second contact terminal which are designated below under the same references 13 and 14.
  • the first contact terminals 13 are arranged alternately on one side and the other of the median longitudinal plane of the bar, the first contact terminals inserted in two adjacent plates occupying a position symmetrical with respect to this median plane.
  • the second contact terminals 14 are arranged alternately on one and the other of the two lateral faces of the plates.
  • the second contact terminals 14 located on the same lateral side are also offset with respect to each other, that is to say that two second contact terminals 14 belonging to the same lateral side are located at different levels .
  • Each of the first contact terminals 13 carries, on its face situated on the side of the insulating face of the wafer which receives it, a layer of resistive material 17, for example a carbon deposit.
  • This resistant material is in electrical contact, on the one hand with the contact terminal 13 belonging to the considered wafer and on the other hand, with the conductive face opposite the adjacent wafer.
  • An electrical resistance R shown diagrammatically in FIG. 1, is thus formed between two adjacent plates.
  • the electrical circuit thus formed is shown in dashed lines: the conductive face of a given plate, therefore its end stylus, is supplied by the first contact terminal 13 belonging to the upstream plate, through the electrical resistance R formed between these two pads.
  • the bar will therefore in practice comprise 1729 plates, the first plate simply ensuring the supply of the first printing stylus carried by the second plate of the stack.
  • Each of the second contact terminals 14 carries, on its face situated on the side of the insulating face of the wafer which receives it, a layer or a chip of semiconductor material 18, for example selenium or cadmium sulfide.
  • This semiconductor wafer 18 is welded, bonded with an electrically conductive glue or held by pressure on the second contact terminal 14 with which it is therefore in electrical contact; it is also in electrical contact with the conductive face opposite the adjacent plate.
  • a diode D is constituted, as shown diagrammatically in FIG. 1, between two adjacent plates, the direction of conduction of the constituted diode being, as illustrated, from the conductive face of a plate to the second contact terminal 14 belonging to the upstream plate.
  • the complete electrical circuit in dashed lines, further comprises the diode D making it possible to short-circuit the end stylus of a wafer from the second contact terminal 14 belonging to the upstream wafer.
  • the insulating deposit forming the insulating face 3 of each wafer, the resistive deposit and the semiconductor deposit carried out respectively on the contact terminals 13 and 14, will have a thickness of the order of 30 ⁇ m.
  • the insulating deposit will advantageously have a certain plasticity allowing an adaptation of the shape of the insulating faces of the wafers in the stack of wafers formed.
  • each assembly 20 two contact pins 21 and 22, on either side of the median plane of the bar indicated by the broken line 23, each group together. tails of the eight conductive parts 13, therefore the first eight contact terminals 13.
  • the first eight corresponding contact terminals are assembled, for example welded. We thus finds on the upper face of the bar two rows each of 108 pins 21 or 22.
  • the two contact pins 21 and 22 will later be electrically connected to each other (this connection is not illustrated) to constitute a first supply terminal 41 of the wafers of the same assembly (see FIG. 6).
  • each second contact terminal 14 has been shown diagrammatically by a small stick.
  • eight second contact terminals 14 stepped over the height of the plates and offset over the width of the assembly 20 so as to make them as accessible as possible.
  • the eight second terminals 14 considered are divided into two groups of four terminals, the two groups being arranged in two parallel lines slightly inclined on the vertical, the four terminals of the same group are separated from each other by three plates and are located therefore offset substantially over the width of the assembly 20. From one assembly 20 to the other assemblies, this arrangement of the terminals 14 is retained. There are therefore, on the front face of the strip, eight rows each comprising 108 second contact terminals 14.
  • the 108 contact terminals 14 in the same row are electrically connected by an electrical conductor 24 soldered on these 108 second contact terminals .
  • This conductor 24 and the other identical conductors on the other seven rows of the front face form a network of conductors which relate the eight rows of 108 terminals 14 at the level of the upper face of the strip: they form a row of eight pins 25 constituting eight second supply terminals 25 for the wafers.
  • the rear face of the bar is identical to its front face.
  • the second supply terminals 25 and 26 are carried by an extension or arm 27 of the insulating flange 9. This arm 27 is crossed by the ends of the conductors such as 24 which are inserted in the notches provided therein. At the front face and the rear face of the bar, insulating flanges (not shown) cover and hold the conductors such as 24 isolated from each other.
  • the strip is completed by a printed circuit board 28n shown simply in FIG. 4.
  • This printed circuit board 28 is located on the upper face of the strip, and is crossed by pins such as 21 (22) and 25 (26 ) that are connected to the stylus addressing control circuit.
  • this addressing control circuit will be carried by this printed circuit plate 28.
  • FIG. 5 a variant of the organization of the elements constituting a printing bar has been illustrated.
  • the organization illustrated in this FIG. 5 is explained compared to that illustrated in FIGS. 1 and 2 and therefore the identical parts are referenced identically.
  • the strip not shown in its entirety, is constituted by an alternating stack of conductive strips 30 and insulating strips 31.
  • the conductive strips 30 each have, like each of the preceding plates, two cutouts (cutouts 11 and 12 above in Figure 2) in which are inserted respectively a first contact terminal and a second contact terminal also identified by the references 13 and 14 previous.
  • first contact terminals 13 are alternately arranged on either side of the median plane of the strip.
  • the second contact terminals 14 are alternately located on one and the other of the front and rear faces of the strip, two second consecutive terminals of the same face are offset with respect to each other in a similar manner to the arrangement described above.
  • These contact terminals 13 and 14 are made of metal which is a good electrical conductor and are insulated from the conductive strips which carry them.
  • This insulating strip also carries, opposite the conductive strip and the second contact terminal 14, a layer or patch of semiconductor material 38.
  • These layers 37 and 38 come when the strips 30 and 31 overlap between the face of the conductive strip and the corresponding contact terminal (13 respectively 14).
  • These locations are shown diagrammatically by the dotted rectangles inside which an electrical resistance R and a diode D have thus been diagrammed. In this figure 5, the dashed line also indicates the resulting electrical circuit.
  • the stylus 10 at the end of a strip 30 (or wafer 1) is supplied from the first contact terminal 13 inserted in this strip, through the resistor R, and has a diode D allowing short- circuit, or not, the stylus from the second contact terminal 14 also inserted in the considered strip.
  • the resistive and semiconductor deposits can be made on the conductive strip, respectively at the locations indicated by the dotted rectangles in Figure 5.
  • FIG 6 there is shown the electrical diagram of a strip, according to the examples described, including the stylus addressing circuit 10.
  • the stylus addressing circuit 10 of the total strip indicated by a brace 40 constitutes 108 diagonal arrays, with diodes D, each designated by the reference 20 assigned to each set of sixteen plates 1.
  • each diagonal matrix the sixteen columns are formed by the conductive plates 1 (conductive face of the plate or conductive strip 30).
  • the sixteen columns 1 are connected to a first supply terminal 41 formed by the connection of the two pins 21 and 22 (FIG. 3), respectively through sixteen resistors R.
  • the supply terminals, such as terminal 41, are independent from one matrix 20 to another.
  • the sixteen lines are formed by the two groups of eight conductors 24 on the front and rear faces of the strip, each conductor 24 being connected to one of the sixteen diodes D, here indicated by a point, and to the second terminal 25 or 26 corresponding supply. Terminals 25 and 26 are independent. According to the organization described above, they are alternated, in this figure 6 the normal order of the lines has been restored.
  • These sixteen lines 24 of a matrix 20 are common to the 108 matrices of the bar. It connects the diodes associated with the wafers of the same rank belonging to the 108 matrices.
  • the voltage applied to one of the terminals 41 will be 0 or 5 volts, that applied to one of the terminals 25 or 26 will be 0 or 5 volts.
  • the first stylus of the first matrix 20 having to be ordered for the printing of a black point, the terminal 41 of this first matrix will be put under 5 volts, as well as the terminal 25 connected to the first line.
  • the other terminals such as 41 supplying the columns of the other matrices, as well as the terminals 25 and 26 connected to the other fifteen lines, will be set to 0 volts.
  • the sixteen columns are under 5 volts via terminal 41.
  • the diode D placed under 5 volts will be blocked and will prevent the passage of current through the diode: the first stylus is therefore supplied and the current in this stylus causes a black dot to appear.
  • the fifteen other diodes of this first matrix set to 0 volts are on: the residual current in these fifteen styli due to the saturation voltage of the diodes is very insufficient to cause an impression.
  • all the diodes arranged on the first line considered are under 5 volts, this remains without effect since the columns of the other matrices are brought to 0 volt: the styli of the other matrices are not supplied.
  • the diodes allow or not to short-circuit the styli of the same matrix, independently of each other. The diodes also make it possible to select a single matrix among the 108 existing matrices.
  • FIG. 7 there is shown schematically an embodiment of a control circuit of the addressing circuit.
  • This control circuit can be carried by the printed circuit plate 28 appearing in FIG. 4.
  • This control circuit is shown having two control inputs.
  • One of the inputs 50 receives the information signal for printing a line, consisting of pulses of logic level 0 (0 volts) for printing a white point (stylus addressed but not controlled), or logic level 1 (5 volts) for printing a black dot (addressed and controlled stylus, that is to say crossed by a current).
  • the input 51 receives clock pulses at the rate of printing of the dots along a scanning line of the paper.
  • the information signal and the clock signal are synchronous.
  • a third circuit input, 52 receives the scan line start synchronization signal.
  • the control circuit of the 108 matrices 20 comprises a counter by 16, 53, connected to the input 51 receiving the clock signal.
  • a counter by 108, 54 is connected to the row 16 output of the counter 53. It has 108 outputs connected respectively to the first 108 supply terminals 41 of the 108 matrices to allow their supply successively.
  • the sixteen outputs of the counter 53 are connected to a combinational logic circuit 55 receiving the information signal from the input 50.
  • This logic circuit 55 comprises sixteen AND gates such as 56, receiving on the one hand in parallel the information signal from the input 50 and connected on the other hand, respectively to the sixteen outputs of the counter 53.
  • the outputs of the sixteen AND gates 56 are connected respectively to the sixteen second supply terminals 25, 26, of the 108 addressing matrices of the styluses .
  • the line start synchronization signal ensures that the counter is forced by 108, 54, to state 1, for example on the detection of the end of this signal.
  • the first matrix 20 has its sixteen columns put under 5 volts. This same signal from terminal 52 ensures a forced reset of the counter by 16, 53.
  • the clock pulses, which follow this line synchronization signal, advance the state of the counter by 16 for controlling the doors. AND 56 which are therefore successively passing for the information signal.
  • state 1 of counter 53 the corresponding pulse of the information signal being at level 1 (black dot) the first line of the 108 matrices will be put under 5 volts, the other lines being at 0 volts.
  • the first stylus inscribes a black dot.
  • the pulse corresponding to the information signal being at level 0 (white point), the first line, and the other lines of the matrices are at 0 volts: the first stylus does not write anything (the white aspect of the paper is maintained at this point) .
  • the addressing of the styli and their supply are thus ensured successively.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Facsimile Heads (AREA)
  • Electronic Switches (AREA)
  • Electrophotography Using Other Than Carlson'S Method (AREA)
  • Fax Reproducing Arrangements (AREA)
  • Dot-Matrix Printers And Others (AREA)
  • Printers Or Recording Devices Using Electromagnetic And Radiation Means (AREA)
EP78100128A 1977-06-13 1978-06-08 Barrette d'impression d'une image Expired EP0000069B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR7718011A FR2394945A1 (fr) 1977-06-13 1977-06-13 Barrette d'impression d'une image
FR7718011 1977-06-13

Publications (2)

Publication Number Publication Date
EP0000069A1 EP0000069A1 (fr) 1978-12-20
EP0000069B1 true EP0000069B1 (fr) 1981-02-18

Family

ID=9192019

Family Applications (1)

Application Number Title Priority Date Filing Date
EP78100128A Expired EP0000069B1 (fr) 1977-06-13 1978-06-08 Barrette d'impression d'une image

Country Status (10)

Country Link
US (1) US4323927A (pt)
EP (1) EP0000069B1 (pt)
JP (1) JPS5931937B2 (pt)
BR (1) BR7803768A (pt)
CA (1) CA1094146A (pt)
DE (1) DE2860531D1 (pt)
DK (1) DK145767C (pt)
FR (1) FR2394945A1 (pt)
IE (1) IE47087B1 (pt)
IT (1) IT1095161B (pt)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55109684A (en) * 1979-02-16 1980-08-23 Ricoh Co Ltd Recorder
JPS55135670A (en) * 1979-04-11 1980-10-22 Nec Corp Recording head
DE3013773C2 (de) * 1980-04-10 1986-04-17 Hugo Sachs Elektronik Kg, 7801 March Elektrischer Schreibkopf
US4390887A (en) * 1980-10-29 1983-06-28 Honeywell Inc. Electrographic recording stylus
FR2545759A1 (fr) * 1983-05-09 1984-11-16 Cit Alcatel Tete d'impression electrostatique
JPS6241875A (ja) * 1985-08-13 1987-02-23 大成建設株式会社 空気膜構造物における膜面接合装置
JPH0462766U (pt) * 1990-10-02 1992-05-28

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3235942A (en) * 1959-12-02 1966-02-22 Burroughs Corp Electrode assemblies and methods of making same
US3470563A (en) * 1965-10-23 1969-09-30 Burroughs Corp Shielded electrostatic transducer
US3672043A (en) * 1965-12-06 1972-06-27 Ncr Co Miniature magnetic head
US3551661A (en) * 1968-08-28 1970-12-29 Varian Associates Diode decoding circuit for selectively energizing an array of electrographic writing electrodes
US3553718A (en) * 1969-06-20 1971-01-05 Itt Multiple stylus electrolytic recorder
JPS5249310Y2 (pt) * 1972-01-19 1977-11-09
JPS555427B2 (pt) * 1972-11-27 1980-02-06
US3946403A (en) * 1973-06-13 1976-03-23 Tokyo Shibaura Electric Co., Ltd. Electrostatic recorder with three state switching
FR2270562B2 (pt) * 1974-05-08 1976-10-15 Philips Massiot Mat Medic
JPS5126203A (ja) * 1974-08-26 1976-03-04 Dantani Plywood Co Keshobannoseizohoho
US4030107A (en) * 1974-09-12 1977-06-14 Sharp Kabushiki Kaisha Electrographic recording devices employing electrostatic induction electrodes
CA1089919A (en) * 1975-09-09 1980-11-18 Paul A. Diddens Electrographic recording head
US4052714A (en) * 1976-02-02 1977-10-04 Honeywell Inc. Electrographic recording head having an integral recording electrode cleaning means
US4058814A (en) * 1976-03-29 1977-11-15 Gould, Inc. Electrographic writing system with diode switching assembly

Also Published As

Publication number Publication date
DK145767B (da) 1983-02-21
FR2394945A1 (fr) 1979-01-12
BR7803768A (pt) 1979-01-16
DE2860531D1 (en) 1981-04-02
EP0000069A1 (fr) 1978-12-20
JPS5931937B2 (ja) 1984-08-06
CA1094146A (fr) 1981-01-20
JPS545614A (en) 1979-01-17
IE47087B1 (en) 1983-12-14
IE781179L (en) 1978-12-13
US4323927A (en) 1982-04-06
IT1095161B (it) 1985-08-10
DK262278A (da) 1978-12-14
DK145767C (da) 1983-08-08
IT7824455A0 (it) 1978-06-12

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