EP0133849A1 - Système de fixation d'une matrice d'impression par stencil sur un tambour d'impression - Google Patents

Système de fixation d'une matrice d'impression par stencil sur un tambour d'impression Download PDF

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Publication number
EP0133849A1
EP0133849A1 EP83107974A EP83107974A EP0133849A1 EP 0133849 A1 EP0133849 A1 EP 0133849A1 EP 83107974 A EP83107974 A EP 83107974A EP 83107974 A EP83107974 A EP 83107974A EP 0133849 A1 EP0133849 A1 EP 0133849A1
Authority
EP
European Patent Office
Prior art keywords
strip
magnet
printing drum
stencil master
leading edge
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
EP83107974A
Other languages
German (de)
English (en)
Other versions
EP0133849B1 (fr
Inventor
Takanori C/O Riso Kagaku Corporation Hasegawa
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.)
Riso Kagaku Corp
Original Assignee
Riso Kagaku Corp
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 Riso Kagaku Corp filed Critical Riso Kagaku Corp
Priority to EP19830107974 priority Critical patent/EP0133849B1/fr
Priority to DE8383107974T priority patent/DE3371316D1/de
Publication of EP0133849A1 publication Critical patent/EP0133849A1/fr
Application granted granted Critical
Publication of EP0133849B1 publication Critical patent/EP0133849B1/fr
Expired legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F27/00—Devices for attaching printing elements or formes to supports
    • B41F27/02—Magnetic devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41L—APPARATUS OR DEVICES FOR MANIFOLDING, DUPLICATING OR PRINTING FOR OFFICE OR OTHER COMMERCIAL PURPOSES; ADDRESSING MACHINES OR LIKE SERIES-PRINTING MACHINES
    • B41L29/00—Devices for attaching printing elements or formes to supports
    • B41L29/02—Devices for attaching printing elements or formes to supports magnetic

Definitions

  • the present invention relates to a device for selectively retaining a leading edge of a stencil printing master onto a printing drum of a rotary stencil printing device.
  • a certain type of rotary stencil printing device which incorporates a hollow printing drum around which a printing stencil master is wrapped is becoming widely used.
  • printing ink is supplied from within the drum through perforations which extend from its inside space to its outer surface to the radially inner surface of the stencil master wrapped around the drum, and some of this ink passes through multiple perforations in certain previously perforated parts of the stencil master to the radially outward surface of the stencil master, whence this ink is then able to be transferred to the surface of a sheet of printing paper pressed against said outer surface of the stencil master, as the printing drum with the stencil master wrapped around it is rotated.
  • a means is required to be provided for retaining a leading edge of the stencil master along a generator of the printing drum, so that the stencil master is wrapped around the printing drum with a proper tension being applied thereto and the stencil sheet adhered around the printing drum by a viscous ink does not shift relative to the printing drum during the rotary stencil printing process.
  • the leading edge of the stencil master is formed with a reinforced lug portion, made for example of cardboard, and this lug portion is formed with a plurality of perforated engaging holes therein, and along the generator of the printing drum there are provided a number of engagement projections corresponding to these engaging holes, the cardboard lug portion thus being retained against the printing drum along said generator with the engagement projections engaged into the engaging holes.
  • a clamp strip is generally provided to mechanically press the cardboard lug portion mechanically to the printing drum along said generator, or such a clamp strip may be omitted whne the engagement between the holes and the projections is formed to be of a non-return type.
  • the stencil master with this form of stencil retaining system, is required to have the above mentioned reinforcing lug provided along its leading edge, it is not possible to utilize continous stencil master which is cut off from a roll of stencil master as and when required, but instead the stencil master sheets must be individually manufactured in advance with reinforcing lugs thereon, which is expensive.
  • a headless stencil master which is typically a piece of plastic material of the thickness of a few tens of microns, without any particular construction for the leading edge thereof, is a very desirable object for implementation in a stencil printing device, and accordingly the prior art schemes for retaining a leading edge of a stencil master onto a printing drum of a rotary stencil printing device are seriously deficient.
  • a system for retaining a leading edge of a a stencil master to a cylindrical rotatably mounted printing drum of a stencil printing device comprising: a magnet strip provided in said printing drum to extend along one generator thereof; and a clamp strip made of a material which is magnetically attracted by said magnet strip so as to be held thereon by an attracting magnetic force but is removable from said magnet strip aganst the attracting magnetic force; whereby said clamp strip in a position as lying against and along said magnet strip retains said leading edge of said stencil master as interposed between said clamp strip and said magnet strip.
  • the clamp strip when the clamp strip is positioned against the magnet strip with the leading edge of the stencil master in the direction of rotation of the printing drum during stencil printing in between them, the clamp strip is magnetically attracted towards the magnet strip and clamps said leading edge of the stencil master against the printing drum along said generator thereof securely. Then, by a self wrapping effect of the sort well known, the entire stencil master is held against the printing drum as it revolves for stencil printing.
  • this apparatus is well adapted to clamp a stencil master whose leading edge is made from the same thin plastic material as the rest of the stencil master, and is well adapted to the use of headless stencil masters which have no reinforced lug edge portions, for instance ones which are cut off from a roll of stencil master as and when required.
  • this apparatus does not require any delicate alignment process for the stencil master, it is well adapted to use in an automatic rotary stencil printing device in which the stencil masters are mounted and demounted automatically.
  • the apparatus itself is of a relatively cheap construction, and further is cheap during use, as it can use continuous sheet type stencil master, which is much cheaper than stencil masters which have special reinforced lug leading edge portions.
  • the magnet strip may be made of rubberized magnet material.
  • the risk of damage to the stencil master during securing of it and the risk of the leading edge of the stencil master becoming escaped from the clamping during stencil printing are both reduced, since such rubberized magnet material is relatively soft and also provides an increased friction coefficient.
  • a system for retaining a leading edge of a stencil master of the type described above further comprising a hinge fixed between one axial end of said clamp strip and a point on said printing drum substantially at one axial end of said magnet strip.
  • the clamp strip may be pivoted around said hinge towards said printing drum so as to lie in its aforesaid position as clamping said stencil master between itself and the magnet strip on the printing drum, or may be pivoted around said hinge away from the printing drum so as to release the stencil master, while its general position relative to the printing drum is preserved by the hinge arrangement.
  • said clamp strip may preferably be made of flexible thin metal material, so that by bending said clamp strip as it is hinged toward and away from the drum the operation of the device is made more conveniently in a gradual manner with a very small force as compared with the total attracting force effected by the magnet strip.
  • a knob may be fixed at the other end of said clamp strip, for the convenience of such gradual operation of the clamp strip by the hand of an operator.
  • the device is particularly adapted to be operated manually.
  • a recess or depression may be provided in the printing drum, so as to conveniently accomodate said knob when the clamp strip is holding the stencil master to the drum.
  • a system for retaining a stencil master of the type first described above further comprising a magnet unit which is capable of selectively exerting either a strong magnetic force at its part facing towards said printing drum which holds said clamp strip by overcoming the attracting magnetic force applied thereto by said magnet strip or a weak magnetic force at its part facing towards said printing drum which releases said clamp strip by being overcome by the attractive magnetic force applied thereto by said magnet strip but is strong enough to hold said clamp strip when not substantially affected by the attractive magnetic force of said magnet strip, and a means for moving said magnet unit towards and away from said printing drum.
  • the means for moving said magnet unit can be used to move said magnet unit close to said printing drum, and then the magnet unit is caused to exert its stronger magnetic force, which, provided that the various parameters of the apparatus are properly conceived, will pull the clamp strip away from the magnet strip. Then the magnet unit can be moved away from the printing drum, carrying the clamp strip with it, so as to release the leading edge of the stencil master, which can thereafter be removed.
  • said magnet unit comprises a permanent magnet which is movable between a first position in which said magnet unit exerts said strong magnetic force at its part facing towards said printing drum and a second position in which said magnet unit exerts said weak magnetic force at its part facing towards said printing drum, or alternatively by such a system for retaining a leading edge of a stencil master as proximately described above, wherein said magnet unit comprises an electromagnet which is selectively either strongly energizable so that said magnet unit exerts said strong magnetic force at its part facing towards said printing drum or weakly energizable so that said magnet unit exerts said weak magnetic force at its part facing towards said printing drum, which are suitable alternative possible constructions.
  • said magnet unit may further comprise a permanent magnet which substitutes a part of said weak magnetic force exerte
  • Fig. 1 shows, a printing drum 1 of a rotary stencil printing device of the type described earlier, having a perforated wall, with a stencil master S wrapped around it.
  • the printing drum 1 is rotatably mounted so as to be able to turn around its axis by a means which is not shown in the figures, and the stencil master S is wrapped around nearly the whole periphery of the printing drum 1, with its leading edge retained and fixed along a generator of the printing drum 1 by a first preferred embodiment of the system for retaining a leading edge of a stencil master to a printing drum according to the present invention.
  • the printing drum 1 has a preferred direction of rotation while the apparatus is being used for printing as indicated by the arrow in Fig.
  • a groove 3 is formed in the outer surface of the printing drum 1, extending approximately along said one of the generators thereof, and in this groove 3 there is embedded a permanent magnet strip 2, so that the outer surface 4 of the magnet strip 2 is substantially flush with the outer surface of the printing drum 1 and extends along said generator thereof.
  • the permanent magnet strip 2 should be made of multipole magnet rubber strip of a per se well known sort, so that the outer surface 4 is soft and provides a high frictional coefficient, and so that the attractive magnetic force exerted by the magnet strip 2 should be effected in a uniform distribution over the whole length of the magnet strip 2.
  • a clamp strip 105 is provided extending generally along the magnet strip 2 with its one axial end pivoted to the drum 1 by a hinge 106, which is fixed at one end of said generator of the printing drum 1, and whose axis extends skew perpendicularly to the central axis of said printing drum 1.
  • the clamp strip 105 is made of a supple magnetically susceptible material which is attracted by a magnetic field, such as for example thin flexible stainless steel strip which in order to have about the proper rigidity should be about 0.1 mm thick, and by the pivoting of the hinge 106 the clamp strip 105 can be laid substantially along the aforesaid generator of the printing drum 1, so as to be attracted by the permanent magnet strip 2 with considerable force.
  • the other end of the clamp strip-105 remote from the hinge 106 is provided with a knob or handle 107, and at the end of the aforesaid generator of the printing drum 1 remote from the hinge 106 there is formed in the surface of said drum 1 a depression 108 adapted to receive said handle 107.
  • a stencil master S when a stencil master S is to be fixed to the printing drum 1 for stencil printing, as shown in Fig. 4 its leading edge is laid along the aforesaid generator of the drum 1, on top of the soft upper surface 4 of the permanent magnet strip 2.
  • This leading edge of the stencil master S is not particularly reinforced, but is just made of the same material as the remainder of the stencil master S, i.e. a thin plastic material.
  • the clamp strip 105 is pivoted by the hand of an operator towards the printing drum 1 and is laid on the top of this leading edge of the stencil master S, against said soft upper surface 4 of the permanent magnet strip 2 with the interposition between of said leading edge of the stencil master S.
  • the knob 107 is received within the depression 108 so as to be conveniently stowed away.
  • the knob or handle 107 is gripped by the hand of the operator and is lifted from out of the depression 108 away from the printing drum 1, and thus the clamp strip 105 is peeled away from said generator of the printing drum 1, by the magnetic attraction of said strip 105 towards the magnet strip 2 being overcome and eventually by the hinge 106 pivoting, just in the same manner as shown in Fig. 4.
  • the stencil master strip S comes to be no longer clamped between the clamp strip 105 and the magnet strip 2.
  • the stencil printing master S when completely thus released, can be conveniently removed from around the printing drum 1.
  • the clamp strip 105 is made of suitable elasticity, rigidity, thickness, and so on to be properly flexible, and yet to be well and strongly attracted by the magnet action of the permanent magnet strip 2.
  • the upper surface 4 of the permanent magnet strip 2 is made to be soft both in order not to damage the stencil master S and in order to have a good frictional coefficient thereagainst.
  • this leading edge far from any form of reinforced lug or strip being required along the leading edge of the stencil master S, it is actually best for this leading edge to be left naked and thin, in order for the magnetic attraction between the clamp strip 105 and the permanent magnet strip 2 to be maximized by them being approached together as closely as possible.
  • this system for retaining a stencil master to a printing drum is well adapted to the use of headless stencil masters which have no reinforced lug edge portions, and thus is well adapted to a rotary stencil printing device in which the stencil masters are cut off from a roll of stencil master as and when required. Further, no delicate alignment process for the stencil master is required, during use of the retaining system therefor according to the present invention. Accordingly, this first preferred embodiment is very easy to use. As will be understood, of course, it is only practicable to operate this first preferred embodiment by hand.
  • Fig. 5 is a part sectional front elevational view, similar to a part of Fig. 1, of part of a printing drum of a rotary stencil printing device with a stencil master wrapped around it, the leading edge of said stencil master being secured along a generator of the drum by a second preferred embodiment of the system for retaining a stencil master to a printing drum according to the present invention.
  • parts of the second preferred embodiment shown which correspond to parts of the first preferred embodiment shown in Figs. 1 through 4, and which have the same functions, are designated by the same reference numerals and symbols as in those figures.
  • a printing drum 1 of a rotary stencil printing device of the type described earlier, with a stencil master S wrapped around it, is again rotatably mounted so as to be able to turn around its axis by a means which is not shown in the figures, and the stencil master S is again wrapped around nearly the whole periphery of the printing drum 1 (although this is not particularly shown in the figures), with its leading edge retained and fixed along a generator of the printing drum 1.
  • the printing drum 1 has a preferred direction of rotation while the apparatus is being used for printing as indicated by the arrow in Fig. 6, and again, by this mere fixing of the leading edge of the stencil master S to the printing drum 1 without any other part of the stencil master S being fixed.
  • a groove 3 is formed in the outer surface of the printing drum 1, extending approximately along said one of the generators thereof, and in this groove 3 there is again embedded a permanent magnet strip 2, so that the outer surface 4 of the magnet strip 2 is substantially flush with the outer surface of the printing drum 1 and extends along said generator thereof.
  • This outer surface 4 of the permanent magnet strip 2 is again soft; and again the permanent magnet strip 2 may be desirably made out of multipole magnet rubber strip of a per se well known sort.
  • the printing drum 1 and the associated inlaid magnet strip 2 are very similar to those of the first preferred embodiment, except that no clamp strip is hinged to the drum. Instead, the function thereof is provided by a more specialized construction, which will now be explained.
  • a support frame 5 to which there is fitted a gear box 6.
  • This gear box 6 rotatably supports a shaft 8 which extends in the horizontal direction from the point of view of the figures, on which a pinion 7 is fixedlly mounted within the gear box 6, and also slidably supports a rack 9, which extends in the vertical direction from the point of view of the figures, and on which are formed a plurality of teeth which are meshed with the teeth of the pinion 7.
  • the shaft 8 is driven by an electric motor 21, which is controlled as will hereinafter be explained, and at the lower part of the rack 8 there is fixedly mounted a magnet unit, generally designated by the reference numeral 10.
  • the rack 9 may be driven upwards and downwards, as desired, and the magnet unit 10 either may be lowered downwards in the figures towards the printing drum 1 to a position shown by phantom lines in Fig. 6 in which its lower surface is very close to the surface of said printing drum 1, or may be raised upwards in the figures away from the printing drum 1 to a position shown by solid lines in Fig. 6 in which its said lower surface is some distance away from the surface of said printing drum 1.
  • the magnet unit 10 is of a particular construction which will now be explained, and its function is that, according to selective control thereof, it can either provide at its underside in the drawings a magnetic field of a first intensity, or a magnetic field of a second intensity which is substantially greater than said first intensity.
  • the magnet unit 10 comprises a cylindrical sleeve 11 with a cylindrical permanent magnet 13 mounted in it, supported by a bracket 14.
  • the sleeve 11 is of a particular construction which is best shown in Figs. 7 and 8, which are transverse cross sectional views of said sleeve 11 taken in a plane perpendicular to its central axis, showing it in two different operational states.
  • the sleeve 11 is formed from two semicylindrical members lla, which are formed rather like portions of gutter being semicircular in their cross sections, and two arcuate members lib, which are formed like extended plate strips and each one of the long edges of each of which is joined tc one of the long edges of one of the semicylindrical members lla. rhus, the entire sleeve member 11 is formed as a hollow cylindrical tube.
  • the semicylindrical shaped members 11a are formed of a ferromagnetic material, and the arcuate members 11b are formed of a paramagnetic material.
  • the sleeve member 11 is formed with a flat bottom face lie which is provided substantially by one of the arcuate members llb located at the lower side thereof.
  • the cylindrical permanent magnet 13, mounted within the central hole of the sleeve 11, is fixedly secured to a rotatably mounted shaft 12 so as to be rotatable about its central axis.
  • the cylindrical permanent magnet 13 is magnetized in such an orientation that its north pole extends along one of the generators of its outer cylindrical surface and its south pole extends along the opposite generator of said surface, as indicated in Figs. 7 and 8.
  • a compression coil spring 20 biases the lever 15 and the permanent magnet 13 in the clockwise direction as seen in Fig. 6.
  • the solenoid device 17 is supplied with actuating electrical energy, against the biasing action of the compression coil spring 20 the lever 15 and the shaft 12 and the permanent magnet 13 are positioned to a first position as shown in Fig.
  • a clamp strip 22 is provided extending generally in the longitudinal direction of the printing drum 1, but, in contradistinction to the case in the first preferred embodiment of the present invention described above, this clamp strip 22 in this second preferred embodiment is not in any way pivoted to the printing drum 1, but is quite physically separate therefrom.
  • the clamp strip 22 is made of a magnetically susceptible material which is attracted by a magnetic field, such as for example thin stainless steel strip, and in this second preferred embodiment is quite stiff.
  • the solenoid device 17 and the electric motor 21 are selectively supplied with actuating electrical energy from a controller which will not be particularly described herein with regards to its structure but only in terms of its appropriate function, since these functions are periodic operations which can be performed by a controller of a per se well known type employing conventional sequence control technology, and thus various detailed structures therefor will be easily supplemented, if required, by one of ordinary skill in the relevant art.
  • the device described above operates as follows.
  • the electric motor 21 is operated so as, via the shaft 8, the gearbox 6, and the rack 9, to raise the magnet unit 10 to its position as shown in Figs. 5 and 6 by the solid lines in which the lower surface lle of the sleeve 11 is some distance away from the surface of the printing drum 1, with the clamp strip 22 magnetically attached to said lower surface 11c of the sleeve 11 and removed from the permanent magnet strip 2, but parallel thereto.
  • the solenoid device 17 is not supplied with actuating electrical energy, so that as explained above the permanent magnet 13 of the magnet unit 10 is in its second rotary position as shown in Fig.
  • the printing drum 1 is positioned to its position with said permanent magnet strip 2 opposed to the magnet unit 10 and the clamp strip 22.
  • the leading edge of the stencil master S is laid along the aforesaid generator of the drum 1, on top of the soft upper surface 4 of the permanent magnet strip 2; this may be done mechanically and automatically, although the details are not shown herein because they are not part of the present invention.
  • This leading edge of the stencil master S again is not particularly reinforced, but is just made of the same material as the remainder of the stencil master S, i.e. a thin plastic material.
  • the printing drum 1 is positioned to its position as shown in the figures with said permanent magnet strip 2 and said clamp strip 22 opposed to the magnet unit 10.
  • the solenoid device 17 is supplied with actuating electrical energy, so that the permanent magnet 13 is in its first rotary position as shown in Fig. 7, so that the magnetic field at the lower surface 11c of the sleeve 11 is of said certain first relatively high intensity.
  • the electric motor 21 is activated so as to lower the magnet unit 10 downwards in the figures towards the printing drum 1 to the position shown by phantom lines in Fig. 6 in which the lower surface 11c of the sleeve 11 is very close to or in contact with the clamp strip 22 still stuck to the printing drum 1, and in this condition the magnetic attraction of the the magnet strip 2 is overcome by the magnetic attraction of the magnet unit 10, so that the clamp strip 22 is removed away from the permanent magnet strip 2, and comes to be held against said lower surface 11c of the sleeve 11 of the magnet unit 10.
  • the electric motor 21 is again operated so as, via the shaft 8, the gearbox 6, and the rack 9, to raise the magnet unit 10 back to its raised position, carrying the clamp strip 22 with it, the leading edge of the stencil master S being released from being retained to the permanent magnet strip 2 of the printing drum 1.
  • the stencil master S is removed from the drum 1; this may be done mechanically and automatically, by for example a pick off or peeling off claw, although the details are not shown herein because they are not part of the present invention.
  • Fig. 9 is a front part sectional elevational view, similar to Fig. 5 for the seeond or preferred embodiment, showing a part of a printing drum of a rotary stencil printing device with a stencil master wrapped around it, the leading edge of said stencil master being in the process of being secured along a generator of the drum by a third preferred embodiment of the system for retaining a stencil master to a printing drum according to the present invention.
  • parts of the third preferred embodiment shown which correspond to parts of the first and second preferred embodiments shown in Figs. 1 through 8 ; and which have the same functions, are designated by the same reference numerals and symbols as in those figures.
  • This third preferred embodiment of the present invention is similar to the second preferred embodiment described above and shown in Figs. 5 through 8, except that the structure of the magnet unit 10' is different from that of the former magnet unit 10.
  • the lower end of the rack 9 is fixed to a support plate 30 which extends parallel to the axis of the printing drum 1.
  • two relatively weak permanent magnets 34 each of which, again, has a bottom surface which projects downwards in the figure and faces the permanent magnet strip 2.
  • this magnet unit 10' is similar to that of the magnet unit 10 of the second preferred embodiment described above, but is obtained via a different construction. That is, when the electromagnets 31 are supplied with actuating electrical energy, they produce a magnetic field at the lower surface of the magnet unit 10', in combination with the permanent magnets 34, of a certain first relatively high intensity; but on the other hand, when the electromagnets 31 are not supplied with actuating electrical energy, they produce substantially no magnetic field of their own at the lower surface of the magnet unit 10', and thus substantially only the magnetic field of the permanent magnets 34 is present at said lower surface, and is of a certain second relatively low intensity.
  • the electromagnets 31 are controlled by the above mentioned controller, as in the case of the second preferred embodiment.
  • this third preferred embodiment operates in substantially the same manner as the above described second preferred embodiment, by the two electromagnets 31 being selectively energized or deenergized just like the solenoid device 17 in the second preferred embodiment, so as to provide a strong magnetic attraction or a weak magnetic attraction to the clamp strip 22. Therefore, no further repetitive explanations of the operation of this third preferred embodiment will be made, in order to avoid redundancy of description.

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EP19830107974 1983-08-11 1983-08-11 Système de fixation d'une matrice d'impression par stencil sur un tambour d'impression Expired EP0133849B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP19830107974 EP0133849B1 (fr) 1983-08-11 1983-08-11 Système de fixation d'une matrice d'impression par stencil sur un tambour d'impression
DE8383107974T DE3371316D1 (en) 1983-08-11 1983-08-11 System for retaining stencil printing master on printing drum

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP19830107974 EP0133849B1 (fr) 1983-08-11 1983-08-11 Système de fixation d'une matrice d'impression par stencil sur un tambour d'impression

Publications (2)

Publication Number Publication Date
EP0133849A1 true EP0133849A1 (fr) 1985-03-13
EP0133849B1 EP0133849B1 (fr) 1987-05-06

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EP19830107974 Expired EP0133849B1 (fr) 1983-08-11 1983-08-11 Système de fixation d'une matrice d'impression par stencil sur un tambour d'impression

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EP (1) EP0133849B1 (fr)
DE (1) DE3371316D1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0179986A1 (fr) * 1984-10-29 1986-05-07 Riso Kagaku Corporation Dispositif de maintien de stencils pour une machine d'impression
US4854237A (en) * 1986-04-29 1989-08-08 Man - Roland Druckmaschinen Ag Printing machine cylinder underlay holding arrangement

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL108479C (fr) * 1900-01-01
FR368103A (fr) * 1906-07-17 1906-11-19 John Thomas Underwood Perfectionnements aux appareils duplicateurs
FR596749A (fr) * 1924-07-22 1925-10-30 Dispositif de fixation des stencils dans les appareils à reproduire dits <duplicateurs>, et stencil convenant à ce dispositif
CH317491A (de) * 1953-07-28 1956-11-30 Herzer Alfred E Einrichtung zum Halten eines Druckbildträgers am Druckwerk von Druckmaschinen
FR1383860A (fr) * 1963-10-11 1965-01-04 Nouveau cylindre d'impression pour machine à reports

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL108479C (fr) * 1900-01-01
FR368103A (fr) * 1906-07-17 1906-11-19 John Thomas Underwood Perfectionnements aux appareils duplicateurs
FR596749A (fr) * 1924-07-22 1925-10-30 Dispositif de fixation des stencils dans les appareils à reproduire dits <duplicateurs>, et stencil convenant à ce dispositif
CH317491A (de) * 1953-07-28 1956-11-30 Herzer Alfred E Einrichtung zum Halten eines Druckbildträgers am Druckwerk von Druckmaschinen
FR1383860A (fr) * 1963-10-11 1965-01-04 Nouveau cylindre d'impression pour machine à reports

Non-Patent Citations (4)

* Cited by examiner, † Cited by third party
Title
IBM TECHNICAL DISCLOSURE BULLETIN *
IBM TECHNICAL DISCLOSURE BULLETIN, vol. 19, no. 5, October 1976, page 1755, New York, USA *
XEROX DISCLOSURE JOURNAL *
XEROX DISCLOSURE JOURNAL, vol. 3, no. 2, March/April 1978, page 107 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0179986A1 (fr) * 1984-10-29 1986-05-07 Riso Kagaku Corporation Dispositif de maintien de stencils pour une machine d'impression
US4854237A (en) * 1986-04-29 1989-08-08 Man - Roland Druckmaschinen Ag Printing machine cylinder underlay holding arrangement

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Publication number Publication date
EP0133849B1 (fr) 1987-05-06
DE3371316D1 (en) 1987-06-11

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