US3685444A - Ink forming device for offset printing machine - Google Patents

Ink forming device for offset printing machine Download PDF

Info

Publication number
US3685444A
US3685444A US67058A US3685444DA US3685444A US 3685444 A US3685444 A US 3685444A US 67058 A US67058 A US 67058A US 3685444D A US3685444D A US 3685444DA US 3685444 A US3685444 A US 3685444A
Authority
US
United States
Prior art keywords
ink
roller
oscillator
ink fountain
transfer roller
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 - Lifetime
Application number
US67058A
Other languages
English (en)
Inventor
Tamaki Kaneko
Katsumi Mizuno
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.)
Ricoh Co Ltd
Original Assignee
Ricoh Co Ltd
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 Ricoh Co Ltd filed Critical Ricoh Co Ltd
Application granted granted Critical
Publication of US3685444A publication Critical patent/US3685444A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F31/00—Inking arrangements or devices
    • B41F31/02—Ducts, containers, supply or metering devices
    • B41F31/14—Applications of messenger or other moving transfer rollers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F31/00—Inking arrangements or devices
    • B41F31/30—Arrangements for tripping, lifting, adjusting, or removing inking rollers; Supports, bearings, or forks therefor
    • B41F31/302—Devices for tripping inking devices as a whole

Definitions

  • INK FORMING DEVICE FOR OFFSET PRINTING MACHINE [72] Inventors: Tamaki Kaneko; Katsumi Mizuno,
  • ABSTRACT An ink forming device for offset printing machines wherein an ink transfer roller interposed between an ink fountain roller and an oscillator roller, which acts as one of the ink forming rollers, is caused to press against the oscillator roller when the ink fountain roller is not supplying ink from an ink fountain, so that the ink transfer roller also functions as an ink forming roller, thus reducing the number of ink forming rollers required.
  • the present invention relates to an ink forming device for rotary offset printing machines.
  • Ink forming rollers for rotary offset printing machines function to form ink to be applied to a master plate mounted on a-master cylinder.
  • conventional rotary offset printing machines use a large number of ink forming rollers which rotate while pressing against one another for forming the ink.
  • An increase in the number of rollers entails an increase in the space for mounting the rollers, thereby making it impossible to" obtain an ink forming rollers
  • an oscillator roller 9 serving concurrently as an ink forming roller, an ink transfer roller 10, an ink fountain roller 1 l and an ink reservoir 13 are g the ink forming device support side all supported by plates 4.
  • the ink transfer roller is rotatably supported by roller support arms 14, (FIG. 4) which are fixed at their upper ends to a shaft 15, that is, rotatably supported by the side plates 4.
  • the arms 14, are fixed at their other ends to the opposite ends of a shaft 16 which is engaged at the central portion by the forked end 17a of a member 17.
  • the base of the forked member 17 is fixed to a shaft 18 rotatably supported by the side plates 4.
  • the shaft 18 extends outwardly at one end through one overall compact size in a rotary offset printing machine.
  • the present invention provides an ink forming device for rotary offset printing machines having a relatively small number of ink forming rollers thus "permitting the construction of compact rotary offset printing machines.
  • the present invention embodies an ink forming device wherein an ink transfer rolleris adapted to function concurrently as an ink forming roller with an oscillator roller, so that the ink may be formed thoroughly despite the fact that the ink forming rollers are smallin number and comprises pivotal support means for said transfer roller along with actuating and locking meansfor alternately pressing it against an ink fountain roller and the oscillator roller.
  • FIG. 2 is a side view showing. the manner of operation of some of the parts of the device of FIG. 1;
  • FIG. 3 is a side view showing the details of a locking member
  • FIG. 4 is a perspective view showing part of the construction of the ink forming device according to this invention.
  • FIG. 1 a master cylinder 2 and a blanket cylinder 3 are shown rotatably supported by two opposed side walls 1, of a printing machine and press against each other and rotate in the direction of respective arrows as is well known in the art.
  • Side plates 4 are provided on each side wall 1 for supporting an ink forming device and are formed with engaging portions 4a and 4b for engaging support rods 5 and 6, respectively, which are secured at their opposite ends to the side walls 1 of the machine.
  • Another member 20 has a roller 20a mounted on its upper end and engaging the lower end of the arm member 19.
  • the baseof arm member 20 is fixed to the inner end of a shaft 21 which is rotatably supported in one of the side walls 1, and has a pivotal lever 22 secured to its outer end.
  • the two-armed lever 22 has a roller 22a at the end of one arm.
  • a spring 23 is mounted between the other arm 22b of the-lever 22 and a. pin on the outside of the side wall 1, so that the roller 22a is urged to bear against the peripheral surface of the cam 24 mounted coaxially on shaft 3a, with the blanket cylinder 3 by virtue of the biasing; force of the spring 23.
  • a spring 25 is mounted between the shaft 16 secured to the ends of the roller support arms 14, and one of the side plates 4 as shown in FIG. 1, so that the ink transfer roller 10 is normally urged to press against the ink fountain roller 11.
  • the cam 24 rotates together with the blanket cylinder 3 in the direction of the arrow a in FIG. 1, the lever 22 moves in pivotal motion in a counterclockwise direction about the shaft 21' whenever the roller 22a moves from the minor diameter portion to the major diameter portion of the cam 24 and causes the arm member 20 to move in the same direction.
  • roller 20a pushes the-arm member 19 to the left in FIG. I, so that the 'arm member 19' moves in pivotal motion in a clockwise direction about the shaft 18.
  • the pivotal motion of the arm member 19 is transmitted through the shaft 18 to the forked member 17 which also moves in pivotal motion in a. clockwise direction in FIG. 1. Since the forked member 17 moves the shaft 16 downwardly, the arms 14 move in pivotal motion in counterclockwise direction about the shaft 15 into the dash-and-dot line position 14A.
  • the ink transfer roller 10 moves to the dash-and-dot line position 10A where it presses against the oscillator roller 9 which is serving concurrently as an ink forming roller.
  • the ink transfer roller 10 is maintained in pressing contact with the oscillator roller 9 while the roller 22a is in contact with the major diameter portion of the cam 24.
  • the ,arm member 20 moves in pivotal motion in a clockwise direction in FIG. I, so that the force with which the roller 20a presses against the lower end of the arm member 19 is released.
  • This permits the arms 14, to be restored to their original 3 positions by the biasing force of the spring 25,. with the result that the ink transfer roller 10 is brought back into pressing engagement with the ink fountain roller 11.
  • the ink transfer roller 10 is fountain roller 11 and theoscillator roller 9 at regular intervals to be maintained in contact with either one of ,7 and 8 to the master cylinder 2.
  • a conventional control means such as shown in U.S. Pat. No. 1,926,145 or US. Pat. No. 3,490,367; operates the cam 26 in a suitable sequence of operations to regulate the desired amount of ink which the ink fountain roller 1 1 will pass to the ink transfer roller 10.
  • the action of the cam 26 is such as to lock the fountain roller 1 1 to stop the supply of ink to the transfer roller .10 and to lock the latter against the oscillator roller 9 during the ink forming operation in the manner as follows:
  • The. ink fountainroller l l is also adapted to be angularly displaced a suitable amount for supplying ink from reservoir 13 to the ink transfer roller 10.
  • the amount of angular displacement'of the ink fountain roller 1 l is adjusted by rotating a cam 26 shown in FIG. 3 from outside the machine so that the supply of ink to the ink transfer roller 10 can be controlled by manipulating the cam 26.
  • the cam-26 is secured to a shaft 26b which loosely mounts a lock member 28 having a forward end portion 28a which is disposed below a bent engaging portion 226 at the upper end of the arm 22b of the lever 22.
  • a resilient member 29 curved in the direction of the cam 26 is secured at the base to the arm of the lock member 28, said resilient member having a free end which is disposed in the path of travel of a pin 30 secured to the forward end of a projection 26a of the cam 26.v
  • the ink fountain roller 11 is held against rotation and the supply of ink is stopped. Also, as shown in FIG. 3, the pin 30 will move the froller' 22a is maintained ifn h a with the major adapted to move, in pivotal motion between the ink diameter portion of the cam 24. Thus, the ink transfer roller is maintained in pressing engagement with the oscillator roller 9 'as shown in FIG. 2.
  • the nu-z meral 31 designates a stop which-'-'-prev'ents the downward movement of the lock member 28 when the resilient member29 is notpressed by the projection 26a.
  • the provision of the resilient member 29: between the lock member 28 and the cam 26 has the efiectof preventing undue forces from acting on theportion of the lever 22 with which the lock member 28 is brought into engagement.
  • the ink forming device permits maintenance of the ink transfer roller in pressing engagement with the oscillator rollerwhen no supply of ink is being delivered-to the transfer roller resilient member 29 upwardly and the lock member 28 i will move in a pivotal motion in a clockwise direction in slaved relation, so that the upper edge of the forward end portion 280 of the member 28 is positionedagainst the engaging portion 220 of the lever 22.
  • the en-- gaging portion 220 of the ar'm22b of the lever 22 in oscillating between the solid line position and the dashand dotline position 22bA in FIG. 3 as the cam 24 rotates, will slide along the upper edge of the forward end portion 28a of the lock member 28.
  • an ink transfer roller interposed between an ink fountain roller and an, oscillator roller and rotatably supported by pivotable support arms for alternately coming into contact with said ink fountain and oscillator rollers, a drive cam adaptedto rotate-in conjunction with a master cylinder, a: lever adapted to pivot in slaved relation to said drive cam, means for. transmitting the pivotal motion of said lever to said support arms for causing saidinktransfer roller to alternately come into contact with said ink fountain roller and said oscillator roller, an ink supply control cam for deter?
  • An ink forming device for offset printing machines having:
  • an oscillator roller for applying ink through a set of inking rollers to said master cylinder
  • a transfer roller for transferring ink from said ink fountain roller to said oscillator roller;
  • a cam having a major diameter portion and a minor diameter portion and operatively connected to rotate with said master cylinder;
  • a device as in claim 2, wherein said mounting means comprises:
  • a device as in claim 2, wherein the means for engaging said locking means comprises:
  • a device as in claim 4, wherein the means for pivoting said mounting means comprises a bellcrank having said follower means on one arm, and said locking means comprises a portion on the other arm of said bellcrank which engages said end portion on said arm member.
  • a device as in claim 5, wherein said locking means and said arm member end portion comprises an extension on one and a recess engageable by said extension on the other.

Landscapes

  • Inking, Control Or Cleaning Of Printing Machines (AREA)
US67058A 1969-09-06 1970-08-26 Ink forming device for offset printing machine Expired - Lifetime US3685444A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP44070822A JPS49446B1 (de) 1969-09-06 1969-09-06

Publications (1)

Publication Number Publication Date
US3685444A true US3685444A (en) 1972-08-22

Family

ID=13442637

Family Applications (1)

Application Number Title Priority Date Filing Date
US67058A Expired - Lifetime US3685444A (en) 1969-09-06 1970-08-26 Ink forming device for offset printing machine

Country Status (4)

Country Link
US (1) US3685444A (de)
JP (1) JPS49446B1 (de)
DE (2) DE7033065U (de)
GB (1) GB1278371A (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2193926A (en) * 1986-07-24 1988-02-24 Ratby Eng Co Ltd Inking system in a printing machine

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1383945A (en) * 1918-05-09 1921-07-05 Miehle Printing Press & Mfg Inking mechanism for printing-presses
US1558686A (en) * 1922-06-21 1925-10-27 Fuchs & Lang Mfg Company Printing press
US1585367A (en) * 1921-08-24 1926-05-18 Miehle Printing Press & Mfg Ink-fountain-ductor trip mechanism
US1926145A (en) * 1931-02-05 1933-09-12 Russell Supply Co Inc Ink feed control means for printing presses
US2206269A (en) * 1937-04-01 1940-07-02 Miller Printing Machinery Co Ink feeding device
US2788742A (en) * 1955-05-09 1957-04-16 Charles A French Ink trip for offset presses
US2821917A (en) * 1953-12-30 1958-02-04 Schnellpressenfab Heidelberg Automatic platen printing press
US3064564A (en) * 1960-03-28 1962-11-20 Harris Intertype Corp Duct roll drive
US3120803A (en) * 1962-02-08 1964-02-11 Samuel M Langston Co Ductor roll lockout device
US3170397A (en) * 1962-10-09 1965-02-23 Orville V Dutro Ink fountain and ductor roll drive
US3301182A (en) * 1964-12-10 1967-01-31 Fairchild Camera Instr Co Automatic ink ductor control for printing presses

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1383945A (en) * 1918-05-09 1921-07-05 Miehle Printing Press & Mfg Inking mechanism for printing-presses
US1585367A (en) * 1921-08-24 1926-05-18 Miehle Printing Press & Mfg Ink-fountain-ductor trip mechanism
US1558686A (en) * 1922-06-21 1925-10-27 Fuchs & Lang Mfg Company Printing press
US1926145A (en) * 1931-02-05 1933-09-12 Russell Supply Co Inc Ink feed control means for printing presses
US2206269A (en) * 1937-04-01 1940-07-02 Miller Printing Machinery Co Ink feeding device
US2821917A (en) * 1953-12-30 1958-02-04 Schnellpressenfab Heidelberg Automatic platen printing press
US2788742A (en) * 1955-05-09 1957-04-16 Charles A French Ink trip for offset presses
US3064564A (en) * 1960-03-28 1962-11-20 Harris Intertype Corp Duct roll drive
US3120803A (en) * 1962-02-08 1964-02-11 Samuel M Langston Co Ductor roll lockout device
US3170397A (en) * 1962-10-09 1965-02-23 Orville V Dutro Ink fountain and ductor roll drive
US3301182A (en) * 1964-12-10 1967-01-31 Fairchild Camera Instr Co Automatic ink ductor control for printing presses

Also Published As

Publication number Publication date
DE2043984A1 (de) 1971-04-29
GB1278371A (en) 1972-06-21
DE2043984B2 (de) 1973-05-24
JPS49446B1 (de) 1974-01-08
DE7033065U (de) 1976-01-22

Similar Documents

Publication Publication Date Title
US3842735A (en) Lithographic printing apparatus and wash-up device
US3056346A (en) Printing machine
US2798425A (en) Inking and dampening means for offset presses
US3146706A (en) Dampening system for lithographic printing presses
US2547470A (en) Ink fountain interrupter for rotary printing machines
GB920224A (en) Improvements relating to printing machines
US3490367A (en) Rotary offset printing machine
US3443516A (en) Rotary press with transfer roller interrupter
US2929316A (en) Repellent system for lithographic duplicators
US3303778A (en) Offset duplicating machine having unified control
US3685444A (en) Ink forming device for offset printing machine
GB1116681A (en) Improvements in or relating to duplicating machines
US4150621A (en) Printing press having plurality of separable inking mechanisms
US1683243A (en) Printing-press ductor mechanism
US3039386A (en) Offset image forming head
US3601045A (en) Operating controls for an offset printing press
US3731624A (en) Etching solution application device for offset printing machines
US2220264A (en) Intermittent sheet forwarding apparatus for duplicating machines
US2798426A (en) Material applicator for rotary printing or duplicating machines
US2737109A (en) Inking means for rotary direct printing lithographic duplicators
US3559569A (en) Damping unit for an offset printing machine
US5024154A (en) Transfer roller switching mechanisms of ink and water supply apparatus for use in printing presses
US4429631A (en) Auxiliary inking roller kit for duplicating press
US2626566A (en) Ductor roller control
US2839991A (en) Rotary numbering attachment for offset printing press