US3874290A - Master plate feed and discharge device for duplicating apparatus - Google Patents

Master plate feed and discharge device for duplicating apparatus Download PDF

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Publication number
US3874290A
US3874290A US368021A US36802173A US3874290A US 3874290 A US3874290 A US 3874290A US 368021 A US368021 A US 368021A US 36802173 A US36802173 A US 36802173A US 3874290 A US3874290 A US 3874290A
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United States
Prior art keywords
master
roller
plate
feed
discharge
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Expired - Lifetime
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US368021A
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English (en)
Inventor
Minoru Suzuki
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Ricoh Co Ltd
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Ricoh Co Ltd
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    • 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
    • B41L31/00—Devices for removing flexible printing formes from forme cylinders
    • 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
    • B41L29/12—Devices for attaching printing elements or formes to supports for attaching flexible printing formes
    • B41L29/14—Clamping devices
    • B41L29/16—Clamping devices operating automatically during operation of rotary machines to attach the printing formes to the forme cylinders
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S271/00—Sheet feeding or delivering
    • Y10S271/902—Reverse direction of sheet movement

Definitions

  • a device comprising a master feed roller for feeding a master plate to a master cylinder, a master discharge roller for discharging the master plate from the master cylinder, and an actuation roller having major diameter portions and minor diameter portions.
  • the feed roller and the discharge roller are disposed in posi' tions spaced apart vertically from each other with the feed roller being disposed above the discharge roller, and the actuation roller is interposed between the feed roller and discharge roller for free vertical movement.
  • a master plate feed operation can be performed; when the actuation roller is moved downwardly to bring its minor diameter portions into engagement with the discharge roller, a master plate discharge operation can be performed.
  • This invention relates to a master plate feeding and discharging device for offset duplicating apparatus.
  • a master plate is carried on a master cylinder for inking an contact with a blanket cylinder. Ink applied to the master plate is transferred to the blanket cylinder, and thence to a copy sheet advanced between the blanket cylinder and an impression cylinder, to produce a copy of the master. This operation is repeated, with feed of successive copy sheets through the apparatus and successive applications of ink to the master plate, until a desired number of copies have been made.
  • the master plate is then removed and replaced for production of copies from a different master plate.
  • a master plate may be advanced from a feed tray to the master cylinder by means of a master feed roller, and after the requisite number of copies have been made, the plate is advanced from the master cylinder to a discharge tray by means of master discharge rollers.
  • a master plate feed operation and a master plate discharge operation should be performed for each master plate from which a plurality of printed copies are produced.
  • a master plate can be mounted on and discharged from the master cylinder either manually by interrupting the rotation of the master cylinder or auto- 'matically while the master cylinder is rotating.
  • This invention has as its object the provision of a master plate feeding and discharging device for duplicating apparatus comprising a master feed roller and a master discharge roller rotating at all times and disposed in positions vertically spaced apart from each other, and an actuation roller interposed between the master feed and master discharge rollers for selective engagement with these two rollers whereby feeding and discharging of a master plate can be effected by these three rollers.
  • the actuation roller is brought into engagement with the master feed roller in proper timing when a master plate is to be fed to the master cylinder, thereby eliminating the need to provide the pair of delivery rollers, pivotal member, and gearing associated with the pivotal member to rotate the master feed roller, which have heretofore been provided in offset duplicating apparatus.
  • the actuation roller according to the invention comprises major diameter portions adapted to be brought into pressing engagement with the master feed roller and minor diameter portions adapted to be brought into pressing engagement with the master discharge roller. This arrangement is effective to keep the ink stain of the master discharge roller and the minor diameter portions of the actuation roller from being transferred to the nonimage bearing surface of the master plate and the master cylinder.
  • FIG. I is a schematic view of an offset duplicating apparatus
  • FIG. 2 is a front view of a master plate feeding and discharging device, for offset duplicating apparatus, embodying the present invention in a particular form;
  • FIG. 3 is a front view of actuation mechanism for ac tuating the master plate feeding and discharging device shown in FIG. 2;
  • FIG. 4 is a view of a drive system for operating the master feed roller and the master discharge roller of the device of FIG. 2;
  • FIG. 5 is a fragmentary sectional view of the master cylinder associated with the device of FIG. 2;
  • FIG. 6 is a view in explanation of the operation of the master feed mechanism shown in FIG. 3;
  • FIG. 7 is a view in explanation of the operation of the master discharge mechanism shown in FIG. 3;
  • FIG. 8 is a front view of the master feed cam and the master discharge cam and their followers, in the device of FIG. 2;
  • FIG. 9 is a view in explanation of the operation of the master feed cam
  • FIG. 10 is a sectional side view of the device of FIG. 2, showing the actuation roller and the master feed and discharge rollers;
  • FIG. 11 is a view in'explanation of the operation of the master discharge cam of the device of FIG. 2;
  • FIG. 12 is a front view of the actuation roller and the master discharge roller of the device of FIG. 2;
  • FIG. 13 is a view in explanation of the operation of the master discharge cam shown in FIG. 11.
  • FIG. 1 illustrates a generally conventional form of offset duplicating apparatus, to which reference may be made for an understanding of one type of apparatus with which devices embodying the present invention may be used.
  • the duplicating machine 1 comprises a master cylinder 2, a blanket cylinder 3 and an impression cylinder 4.
  • a master plate 6 on a master plate feed tray 5 is fed to the master cylinder 2 by means of a master feed roller 7.
  • An ink-repellent etching liquid is applied by an etching roller 8 to the master plate 6 mounted on the master cylinder 2 so that ink may not adhere to regions other than the image regions.
  • inking is effected by an ink applying roller 11 of an inking device 9 so as to apply ink to the image regions of the master plate 6.
  • An ink image of the master plate 6 is formed on the blanket cylinder 3, and a copy sheet 12 supplied to the impression cylinder 4 by a copy sheet feed roller 13 and a copy sheet delivery roller 14 is brought into pressing engagement with the blanket cylinder by the impression cylinder 4.
  • the printed copy sheet is ejected onto a printed copy sheet tray 15.
  • the blanket cylinder 3 is cleaned to remove the ink image therefrom and the master plate 6 mounted on the master cylinder 2 is removed therefrom and discharged by master discharge rollers 16 from the master cylinder 2 to a master plate discharge tray 17.
  • FIGS. 2 13 a master cylinder 2 is supported by a shaft 21 which in turn is supported by two side plates (not shown) of the duplicating apparatus.
  • the master cylinder 2 is rotated in the direction of an arrow 22 by a drive (not shown).
  • a cutout 23 is formed in the outer periphery of the master cylinder 2 as shown in FIG. 5.
  • Master plate pushout means 28 has a free end 28a which is disposed below a free end of grip claw means 25. The free ends of claw means 25 and pushout means 28 are maintained in pressing engagement with one end of the outer periphery of master cylinder 2 by the biasing force ofa spring (not shown).
  • the pushout means 28 is secured at its base to a support plate 29 which is formed therein with a slot 29a for loosely receivinga pin 31 fixedly projecting from the cylinder side wall 2a, and which has an end portion pivotally supported by a shaft 32 secured to one end of an arm 33.
  • the arm 33 is secured at its base to a shaft 34 pivotally supported at opposite ends by the two side walls 2a and 2h.
  • a follower 35 for master plate discharge (shown in FIG. 2), adapted to be actuated when a master plate discharge operation is performed, is secured to an end portion of the shaft 34 extending outwardly of the side wall 2!).
  • a claw opening and closing member 36 is secured to one end portion of the shaft 24 to which the master plate grip claws are secured as aforementioned.
  • the member 36 supports at one end portion a roller 37 which is maintained in contact with a free end a of the follower 35, and is formed at the other end portion with a bent portion 36a which is maintained in light pressing engagement with a roller 39 supported by a free end of a follower 38 for master plate feed.
  • the follower 38 is pivotally supported at its base by the shaft 34, and is adapted to be actuated (when a master plate feed operation is performed) to move clockwise about the shaft 34 so as to move the grip claw means 25 (see FIG. 5) to an open position.
  • the follower 38 is normally urged by the biasing force of a spring (not shown) to move counterclockwise about the shaft-34.
  • the follower 38 for master plate feed has a roller 41 mounted on a shaft supported by an intermediate portion of the follower 38 and adapted to cooperate with a cam edge 42a of a master feed cam 42.
  • the master feed cam 42 is supported at its base by a shaft 43 which in turn is supported by the main side plate (not shown) and urged to move clockwise about the shaft 43 by the biasing force of a spring 44 (see FIG. 8) connected at one end to the cam 42 andv at the other end to an immovable member (not shown), so that one side edge 42a of its free end portion is maintained in pressing engagement with an immovable pin 45.
  • a pin 46 is mounted on the free end portion of the master feed cam 42.
  • a lock member 47 having a locking offset portion 47a is pivotally supported at its base by an immovable shaft 48 and maintained at its lower edge in pressing engagement with the pin 46 by gravity.
  • the follower 35 for master plate discharge has a roller 49 mounted on a shaft supported by one end of the follower 35 for cooperation with a cam edge 51a of a master discharge cam 51.
  • the master discharge cam 51 is pivotally supported at its base by a shaft 52 connected to an immovable member (not shown) and has a lower side edge 51c which is maintained in pressing engagement with a pin 53 mounted on one end of arelease member 54 pivotally supported at its base by an immovable shaft 55.
  • the release member 54 is normally urged to move counterclockwise about the shaft base to one end portion of the shaft 52 supporting the master discharge cam 51 as aforementioned, so that the actuation member 57 is substantially integral with the master discharge cam 51.
  • the actuation member 57 has a free end to which is connected one end of a spring 7 58 connected at the other end to an actuator 59a of a master plate discharge initiation solenoid 59.
  • the actuation member 57 is normally urged to move counterclockwise about the shaft 52 by the biasing force of a spring 61 connected at one end to the member 57 and at the other end to an immovable member (not shown), so thatthe master discharge cam 51 is maintained at its lower side in pressing engagement with the shaft 55.
  • a stop 62 shown in FIG. 3 is disposed below'the actuation member 57 to limit the range of movement of the actu-" ation member 57.
  • the master feed roller 64 and master discharge roller 65 each'comprise a plurality of roller members and are secured to V shafts 66 and 67 respectively for rotation in directions indicated by arrows in FIG. 2.
  • the master discharge roller 65 is maintained in thereto.
  • the actuation roller 68 as shown in FIG. 12..
  • the major diameter portions 68a are normally spaced apart from the master feed roller 64 as shown in FIG. 2.
  • a master plate feed tray 5 which is formed with an offset portion 5a and an opening 5)) in a portion of the tray 5 which is disposed near the two rollers 64 and 68.
  • the offset portion 5a is for correctly positioning the leading end of a master plate 6 on the tray 5, and the major diameter portions 680 extend through the opening 5b when the actuation roller 68 is moved into engagement with the master feed roller 64 as subsequently to be described.
  • the actuation roller 68 is rotatabIy supported by a shaft 69 connected to a free end of an arm 71 pivotally supported at its base by a shaft 72 supported by the opposite side plates.
  • a follower 73 is secured at its base to an end portion of the shaft 72 which extends out of one of the side plates.
  • the follower 73 supports at its free end through a shaft a roller 74 which is positioned against a cam 70 secured to the shaft 21 supporting the master cylinder 2 as shown in FIG. 3.
  • the follower 73 is urged to move clockwise about'the shaft 72 by the biasing force of a spring 75 connected at one end to the follower 73 and at the other end to an immovable member (not shown), so that a bent portion 73a formed at one end of its short arm is maintained in pressing engagement with an engaging portion 76a of a master feed actuation member
  • the actuation member 76 is pivotally supported by a shaft 77 connected to an immovable member (not shown), and a spring 79 is connected at one end to a free end of the follower 76 and at the other end to an actuator 78a of a plate feed initiation solenoid 78.
  • a return spring 81 is connected at one end to an immovable member (not shown) and at the other end to the member 76.
  • a drive gear 81a and a sprocket 82 substantially integral with the gear 81a are rotatably supported by the shaft 72 supporting the follower 73 as shown in FIG. 4.
  • Pinions 83 and 84 maintained in meshing engagement with the gear 81a are secured to ends of the shafts 66 and 67 supporting the master feed roller 64 and master discharge roller 65 (see FIG. 2) respectively.
  • a chain 86 is trained over the sprocket 82 and over another sprocket 85 secured to the shaft 21 supporting the master cylinder 2.
  • the master feed initiation solenoid 78 shown in FIG. 3 is energized when an instruction to start master feed is given thereto.
  • the master feed actuation member 76 is pulled by the spring 79 and moves clockwise about the shaft 77, thereby releasing the follower 73.
  • the follower 73 moves clockwise about the shaft 72 as the roller 74 is brought into engagement with a minor diameter portion 70a of the cam 70 as shown in FIG. 6.
  • the arm 71 substantially integral with the follower 73 also moves clockwise about the shaft 72. This brings the supported by the arm 71 into pressing engagement with the master feed roller 64.
  • the free end portion of the master plate 6 disposed on the master plate feed tray 5 is gripped between the master feed roller 64 and the major diameter portions 68a of the actuation roller 68, and is moved thereby toward the master cylinder 2 as shown in FIG. 10.
  • the above-described clockwise movement of the ac tuation member 76 also moves the master feed cam 42 from an inoperative position shown in FIG. 8 to an operative position shown in FIG. 9 by suitable means, and the pin 46 at the free end of the cam 42 is brought into locking engagement with the offset portion 47a of the lock member 47.
  • the master cylinder 2 rotates in the direction of the arrow 22, so that the roller 41 is pushed and moved by the cam edge 42a of the master feed cam 42 toward the shaft 21, and the follower 38 for master feed moves counterclockwise about the shaft 34.
  • the master discharge solenoid 59 shown in FIG. 3 is energized when an instruction to remove the master plate 6 from the master cylinder 2 is given. Energization of the solenoid 59 causes the actuation member 57 to be pulled by the spring 58 and move clockwise about the shaft 52.
  • the master discharge cam 51 substantially integral with the master discharge actuation member 57 also moves in the same direction, and is maintained in an operative position as the pin 53 on the release member 54 is brought into engagement with the offset portion 51b as shown in FIG. 11.
  • a lever 92 supporting at its free end a hold-down roller 91 through a shaft is secured at its base to the shaft 55 supporting the release member 54.
  • the hold-down roller 91 also moves in the same direction to force the master plate 6 tightly over the master cylinder2.
  • the master plate 6 pushed out in this way is picked off from the periphery of the master cylinder by pickoff claws 63 as shown in FIG. 13 and gripped by the master discharge charge roller 65 rotating at all times and the minor diameter portions 68b of the actuation roller 68 to be conveyed in the direction of an arrow 94 in FIG. 13 until it is ejected onto the master plate discharge tray 17 (see FIG. 1).
  • the master discharge roller 65 and the minor diameter portions 68b of the actuation roller 68 are soiled by the ink on the upper surface of the master plate.
  • the minor diameter portions 681? are not brought into contact with the lower surface of the master plate when the latter is fed to the master cylinder, staining of the master plate and the periphery of the master cylinder 2 on which the master plate 6 is mounted can be precluded.
  • the master plate discharge operation is performed, the master plate 6 is brought into engagement with the major and minor diameter portions 68a and 68b of the actuation roller 68 as shown in FIG. 12, so that discharge of the master plate can be facilitated.
  • the roller 49 supported by the follower 35 flips the free end 54a of the release member 54 and causes the same to move clockwise about the shaft 55, so that the pin 53 is released from engagement with the offset portion 51b and the master discharge cam 51 is released.
  • the master discharge cam 51 and the actuation member 57 substantially integral with the master discharge cam 51 are restored to their original positions by the biasing force of the return spring 61.
  • a master plate feed and discharge device for duplieating apparatus comprising a. a master plate feed tray for holding a master plate;
  • a master feed roller for feeding a master plate to a master cylinder from said feed tray
  • a master discharge roller disposed below the master feed roller
  • actuation roller means for moving the actuation roller to a position in which it cooperates with the master feed roller when a master feed operation is performed and to a position in which it cooperates with the master discharge roller when a master discharge operation is performed;
  • said actuation roller comprising a plurality of major diameter portions and minor diameter portions arranged alternately on the same axis, said major diameter portions being disposed for cooperation with the master feed roller and said minor diameter portions being disposed for cooperation with the master discharge roller.
  • a rotatable master cylinder including means for releasably gripping a master plate to hold the plate on the cylinder;
  • a driven plate feed roller for engaging and advancing a plate to the cylinder from said supporting means
  • a driven plate discharge roller for engaging and advancing a plate away from the cylinder, said feed and discharge rollers being disposed in spaced, axially parallel relation adjacent said cylinder;
  • said third roller comprising a plurality of first portions of equal diameter and a plurality of second portions of equal diameter smaller than the diameter of said first portions, said second portions being disposed in alternating relation with said first portions along a common axis;
  • said feed roller comprising a plurality of coaxial roller segments spaced apart for register with said first portions of said third roller to grip a plate therebetween;
  • said discharge roller comprising a plurality of coaxial roller segments spaced apart for register with said second portions of said third roller to grip a plate therebetween.
  • said supporting means comprises a tray interposed between said feed roller and said third roller, for supporting a plate in position to be gripped between said feed and third rollers, and having an opening in register with said last-mentioned rollers for permitting the rollers to grip the plate.

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  • Supply, Installation And Extraction Of Printed Sheets Or Plates (AREA)
  • Separation, Sorting, Adjustment, Or Bending Of Sheets To Be Conveyed (AREA)
  • Paper Feeding For Electrophotography (AREA)
  • Feeding Of Articles By Means Other Than Belts Or Rollers (AREA)
  • Delivering By Means Of Belts And Rollers (AREA)
US368021A 1972-06-13 1973-06-08 Master plate feed and discharge device for duplicating apparatus Expired - Lifetime US3874290A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1972069760U JPS543761Y2 (de) 1972-06-13 1972-06-13

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US3874290A true US3874290A (en) 1975-04-01

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US368021A Expired - Lifetime US3874290A (en) 1972-06-13 1973-06-08 Master plate feed and discharge device for duplicating apparatus

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Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4008660A (en) * 1975-04-08 1977-02-22 Pitney-Bowes, Inc. Master loading and unloading apparatus for a lithographic printing machine
US4134338A (en) * 1976-10-27 1979-01-16 Gestetner Limited Stencil ejector
US4214740A (en) * 1978-05-02 1980-07-29 Xerox Corporation Sheet reversing mechanism
US4262894A (en) * 1978-09-11 1981-04-21 Vydec, Inc. Apparatus for moving an object, in particular the top sheet of a stack of individual sheets of cut paper
US4905595A (en) * 1987-07-02 1990-03-06 Heidelberger Druckmaschinen Aktiengesellschaft Process and printing press to produce multicolor impressions
US5111744A (en) * 1989-12-09 1992-05-12 Koenig & Bauer Aktiengesellschaft Method and apparatus for automatically changing a printing plate
US5127328A (en) * 1989-12-09 1992-07-07 Koenig & Bauer Aktiengesellschaft Method and apparatus for automatically feeding a printing plate
US5402727A (en) * 1992-04-13 1995-04-04 Toyo Ink Manufacturing Co., Ltd. Image transfer apparatus and method for ejecting image receptor
US6435091B2 (en) 1997-05-30 2002-08-20 Creoscitex Corporation Ltd. Apparatus for clamping plates to external drum devices, based on movable clamps

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5830818B2 (ja) * 1976-10-22 1983-07-01 株式会社濱田印刷機製造所 枚葉印刷装置における給版・排版方法及び装置
FR2595626B1 (fr) * 1986-03-11 1994-05-20 Leroy Pierre Etienne Nouvel appareil destine a la reproduction de documents par procede lithographique

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2212659A (en) * 1939-08-30 1940-08-27 Ditto Inc Duplicating machine
US3218060A (en) * 1963-03-27 1965-11-16 Charles H Harbison Sheet feeding apparatus
US3283705A (en) * 1962-08-13 1966-11-08 Dick Co Ab Duplicating machine with dual receiving trays
US3656742A (en) * 1969-08-01 1972-04-18 Ncr Co Document transport device
US3731624A (en) * 1969-09-15 1973-05-08 Ricoh Kk Etching solution application device for offset printing machines
US3755653A (en) * 1970-12-21 1973-08-28 Honeywell Bull Soc Ind Record card reading apparatus
US3756586A (en) * 1971-12-16 1973-09-04 Ibm Selective cut sheet feed device

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2212659A (en) * 1939-08-30 1940-08-27 Ditto Inc Duplicating machine
US3283705A (en) * 1962-08-13 1966-11-08 Dick Co Ab Duplicating machine with dual receiving trays
US3218060A (en) * 1963-03-27 1965-11-16 Charles H Harbison Sheet feeding apparatus
US3656742A (en) * 1969-08-01 1972-04-18 Ncr Co Document transport device
US3731624A (en) * 1969-09-15 1973-05-08 Ricoh Kk Etching solution application device for offset printing machines
US3755653A (en) * 1970-12-21 1973-08-28 Honeywell Bull Soc Ind Record card reading apparatus
US3756586A (en) * 1971-12-16 1973-09-04 Ibm Selective cut sheet feed device

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4008660A (en) * 1975-04-08 1977-02-22 Pitney-Bowes, Inc. Master loading and unloading apparatus for a lithographic printing machine
US4134338A (en) * 1976-10-27 1979-01-16 Gestetner Limited Stencil ejector
US4214740A (en) * 1978-05-02 1980-07-29 Xerox Corporation Sheet reversing mechanism
US4262894A (en) * 1978-09-11 1981-04-21 Vydec, Inc. Apparatus for moving an object, in particular the top sheet of a stack of individual sheets of cut paper
US4905595A (en) * 1987-07-02 1990-03-06 Heidelberger Druckmaschinen Aktiengesellschaft Process and printing press to produce multicolor impressions
US5111744A (en) * 1989-12-09 1992-05-12 Koenig & Bauer Aktiengesellschaft Method and apparatus for automatically changing a printing plate
US5127328A (en) * 1989-12-09 1992-07-07 Koenig & Bauer Aktiengesellschaft Method and apparatus for automatically feeding a printing plate
AU637167B2 (en) * 1989-12-09 1993-05-20 Koenig & Bauer Aktiengesellschaft Procedure and device for automatically changing a printing plate
AU644616B2 (en) * 1989-12-09 1993-12-16 Koenig & Bauer Aktiengesellschaft Procedure and device for automatically feeding in or feeding out a printing plate
US5402727A (en) * 1992-04-13 1995-04-04 Toyo Ink Manufacturing Co., Ltd. Image transfer apparatus and method for ejecting image receptor
US5503075A (en) * 1992-04-13 1996-04-02 Toyo Ink Manufacturing Co., Ltd. Image transfer apparatus and method for ejecting image receptor
US6435091B2 (en) 1997-05-30 2002-08-20 Creoscitex Corporation Ltd. Apparatus for clamping plates to external drum devices, based on movable clamps

Also Published As

Publication number Publication date
DE2329757A1 (de) 1974-01-10
JPS543761Y2 (de) 1979-02-21
DE2329757B2 (de) 1975-04-10
GB1432485A (en) 1976-04-14
JPS4930001U (de) 1974-03-15

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