US3631800A - Ink system for printing machines - Google Patents

Ink system for printing machines Download PDF

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Publication number
US3631800A
US3631800A US748709A US3631800DA US3631800A US 3631800 A US3631800 A US 3631800A US 748709 A US748709 A US 748709A US 3631800D A US3631800D A US 3631800DA US 3631800 A US3631800 A US 3631800A
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US
United States
Prior art keywords
ink
fountain
diaphragm
container
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
US748709A
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English (en)
Inventor
Albert E Mignone
Donald J Miller
Raymond J Schmidlin
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.)
AB Dick Co
Original Assignee
Multigraphics Inc
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Application filed by Multigraphics Inc filed Critical Multigraphics Inc
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    • 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
    • B41F31/08—Ducts, containers, supply or metering devices with ink ejecting means, e.g. pumps, nozzles
    • 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
    • B41F31/022—Ink level control devices
    • 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
    • B41F31/04—Ducts, containers, supply or metering devices with duct-blades or like metering devices
    • 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
    • Y10S222/00—Dispensing
    • Y10S222/01—Xerography
    • 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
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/7287—Liquid level responsive or maintaining systems

Definitions

  • ABSTRACT An ink system is provided wherein ink is pumped from a container to an enclosed ink fountain, thereby eliminating exposure of the ink to the atmosphere.
  • a flexible diaphragm constitutes a cover for the ink fountain. In its retracted and distended positions the diaphragm, by electrical means, controls the starting and stopping of the pump to assure an adequate supply of ink in the fountain and automatic replenishing of the ink used.
  • INK SYSTEM FOR PRINTING MACHINES This invention relates to printing machines and, more particularly, to an ink system for use in printing machines.
  • ink systems usually comprise a fountain which contains the ink, and a roller which rotates in the fountain, picking up ink and feeding it to additional rollers and eventually to the printing form which may be in the nature of a planographic plate or master, or raised-type characters.
  • the ink fountain also includes an adjustable doctor blade which is spaced from the fountain roller a predetermined distance so as to control the amount of ink picked up by the roller.
  • ink systems have been in use for many years and perform satisfactorily to the extent of their limitations.
  • one disadvantage has been the fact that the ink fountain is exposed to the atmosphere and becomes a target for foreign matter such as dust, dirt, paper lint, and the like, all of which may be fed with the ink onto the finished printed copy, thereby adversely affecting the quality of the print.
  • ink laying in an exposed ink fountain for too long a time tends to have a skin formed thereon. To avoid this condition, it is necessary to clean the fountain of aging ink at frequent intervals, a time-consuming chore.
  • the present invention has as its primary object the provision of an ink system which can be permitted to stand for long intervals between uses without ink deterioration, and in which the ink is continually protected from contamination by foreign matter or foreign by air contact.
  • This object is achieved according to the present invention by providing an enclosed ink supply system for a printing machine in which the ink remains completely concealed and unexposed to the atmosphere, and thus free from possible oxidation, from the time it is housed in the original container until it is transferred from the ink fountain roller to other rollers in the ink train.
  • Another object of the invention is to provide for automatic replenishment of the ink in the ink fountain to thereby insure an adequate working level of ink in the fountain regardless of the amount being used in the printing operation, and, at the same time, avoid the disadvantages and messiness generally associated with manually adding ink to the ink fountain, and to simplify the introduction of a new ink supply when necessary.
  • FIG. I is a front elevation of a printing machine having an ink supply system embodying the features of the present invention.
  • FIG. 2 is a plan of an ink fountain incorporated in the printing machine illustrated in FIG, 1;
  • FIG. 3 is a section, on an enlarged scale, taken on the line 3-3 of FIG. 2;
  • FIG. 4 is an exploded elevational detail on an enlarged scale, showing an ink container utilized in the ink supply system, with a portion of the container broken away, and showing the same in relation to a pump inlet.
  • FIG. 1 there is shown a printing or duplicating machine, indicated generally by the reference numeral 10, in which the inking system of the present invention may be utilized.
  • the concept described and claimed herein may be applied to a variety of printing and duplicating machines and, in fact, to any apparatus where the use and automatic feeding of inklike materials is desired.
  • the printing machine has mounted thereon an ink unit, indicated generally at 12, which includes one or more ink transfer rollers such as, for example, rollers 14, I6 and 18,
  • fountain roller 20 which are effective to transfer ink from an ink fountain roller 20 to a printing plate or form (not shown).
  • fountain roller 20 is rotatably mounted in an ink fountain 22.
  • Ink fountain 22 may be of one-piece construction, e.g., a casting, or it may be an assembly of individual parts. It is deemed sufficient for an understanding of the invention to merely state that, as shown in FIGS. 2 and 3, fountain 22 comprises a pair of sidewalls 24a and 24b, a front wall 26a, a rear wall 26b and an ink chamber C. As shown in FIG. 3, the rear wall 26b may conveniently be extended so as to provide a base 28 for ink fountain 22.
  • wiper pads 29, FIG. 2 are provided at each end of fountain roller 20, i.e. between the ends of the fountain roller and sidewalls 24a and 24b of fountain 22. Wiper pads 29 preferably should be of a porous, resilient material such as, for example, felt.
  • fountain 22 is depicted as having a pair of openings, shown by the reference numerals 21 and 23. Opening 21 accommodates fountain roller 20. The purpose of the other opening 23 will become apparent as the description proceeds.
  • the thickness of the film of ink picked up by the fountain roller 20 is controlled by means of a doctor blade 30 which may be mounted, by way of example, on an inclined portion 260 or rear wall 26b, as shown in FIG. 3, and retained by screws 32 threadingly engaging a backup plate 34.
  • a series of spaced-apart thumbscrews 36, FIGS. 2 and 3, are provided to enable the operator to position doctor blade 30 toward or away from fountain roller 20 to thereby regulate the amount of ink picked up by fountain roller 20.
  • FIG. 4 there is shown a preferred form of ink source comprising an ink container 40 having at one end a complementary cover 42 of the screw-on type.
  • the other end of container 40 is provided with a neck 44 which serves as a spout.
  • the neck 44 includes as an integral portion thereof a closed tip 440.
  • cover 42 is fastened to container 40 and tip 44a is an integral portion of neck 44 of container 40.
  • the container 40 is made of a suitable semirigid plastic material so that the tip 44a can be readily removed bycutting with a knife. To this end a line of weakening is preferably appropriately located about the neck 44 to assist in this operation.
  • a pump P driven intermittently by a motor M and connecting belt 45, is provided as a source of power means for the purpose of feeding ink from container 40 to ink fountain 22 through an interconnecting tube or passageway 46.
  • Pump P may be a conventional screw-type pump since a pump of this nature has been found to perform satisfactorily.
  • An inlet 48 is provided on pump P to receive ink from the ink source or, more specifically, from container 40 by way of neck or spout 44. As shown in detail in FIG. 4, neck 44 is designed to fit snugly in an opening 480 of pump inlet 48.
  • pump P is provided with an outlet 50 through which the ink is conveyed through a hollow coupling 52 and into passageway 46.
  • coupling 52 may include a gauge 54 which affords a ready checkpoint to indicate malfunction of the pump or the motor, or depletion of the ink supply, or the like.
  • Coupling 52 may also include a conventional petcock 56 which is useful in checking the flow of ink, draining of the pump, etc.
  • Passageway 46 terminates in an inlet 58, FIGS. 2 and 3, through which the ink reaches ink fountain 22.
  • ink fountain 22 has a pair of openings, 21 and 23, opening 21 accommodating fountain roller 20.
  • opening 21 accommodating fountain roller 20.
  • a flexible diaphragm 60 within and closing the opening 23 there is positioned a flexible diaphragm 60.
  • Diaphragm 60 is preferably of such dimension, as to constitute a cover for ink fountain'22, thereby protecting the surface of the ink in the fountain against contamination by foreign matter and oxidation byrair contact.
  • Diaphragm 60 may be ofany suitable, thin flexible material which is not subject to deterioration due to contact with the ink in chamber C. It has, been found that a plastic material, such as polyethylene, for example, performs entirely satisfactory for this purpose.
  • Diaphragm 60 is assembled to ink fountain 22 in a somewhat loose or slack manner, i.e. not taut, so that it may assume what might be termed two positions, e.g., an outer or distended position, as indicated by full lines in FIG. 3, and an inner or retracted position as indicated by broken lines.
  • Diaphragm 60 is mounted between a pair of frame members 62 and 64 and may be fastened thereto, for example, by screws 66 threadingly engaging frame 64.
  • a gasket 68 of substantially the same dimensions as lower frame member 62 may be placed between diaphragm 60, and one of the frame members 62 or 64.
  • upper frame member 64 may include angular portions 64a which are fastened to ink fountain 22, for example, by screws 70.
  • a sensing plate 72 is in surface contact with an exposed portion of diaphragm 60 and is movable therewith.
  • Sensing plate 72 may be formed so as to include ears 74 which are perforated to permit the sensing plate to be pivotally mounted on a pin 76 which in turn is held by a bracket 78 mounted on ink fountain 22.
  • sensing finger 80 of a control switch 82 is connected by an electric circuit 84 to motor M which is energized when the sensing finger 80 is in approximately the broken line position shown in FIG. 3.
  • Sensing plate 72 is shown in FIG. 2 as being of such size that it contacts, or rests on, only a small portion of the exposed surface of diaphragm 60.
  • Such illustration is by way of example only, since it is recognized that under certain conditions, e.g. when a low-viscosity ink is employed, it may be desirable to have more extensive surface contact between the sensing plate 72 and the exposed portion of diaphragm 60. With a small area of contact and low-viscosity ink it has been found that, even with very light spring loading of the arm 80, it is possible for the latter to depress the diaphragm locally so as to give erroneous or erratic level indications.
  • sensing plate 72 With greater surface contact, there is less likelihood of the plate 72 depressing only a local portion of the surface of the diaphragm while the general level remains higher, and the resulting tendency to overfill the fountain with consequent chance for ink leakage at the diaphragm connections is avoided. It follows that when an extremely high-viscosity ink is employed, even sensing plate 72 may be dispensed with, and sensing finger 80 may be arranged to make direct contact with diaphragm 60. The viscosity of the ink employed is controlling in this respect, and the contact area is so adjusted that the sensing finger 80 will move reliably in unison with the general level of diaphragm 60.
  • sensing plate 72 it should be of a surface dimension which, considering the degree of loading applied by the sensing means, is capable of reliably following the breathingmotion of the diaphragm 60 which, as shown in FIG. 3, is between the distended position shown in solid lines and the retracted position shown in broken lines.
  • sensing plate 72 may be a part of, oraffixed to, sensing finger 80 rather than as shown in FIGS. 2 and 3.
  • Strip 86 of flexiblematerialwhich may be fastened to the inside of frontwall 26a of ink fountain 22 in the manner shown. Strip 86 extends over a portion of the periphery of ink fountain roller 20, thus bridging the clearance gap between the lower edge of wall -26a of ink fountain22 and roller 20. Strip 86 preferably is of a length at least equal to the length of ink fountain roller20, thereby providing a seal to prevent possible leakage of ink, particularlyink of low viscosity, at this point, and thus further insuring a closed ink fountain structure.
  • sealing strip, 8 6 is flexible, it permits free rotation of ink fountain roller 20 even in an instance when foreign matter may be backed onto the fountain rollerfrom the other ink rollers, l4, l6, l8, Suchan incident causes temporary flexing of sealing strip 86 to the broken. line position shown.. The direction of slope of the strip is,.however, such that thepressure of the ink, which is maintained at av height substantially above the level of the strip, tendsto tighten the grip onthe roller and insure sealing action.
  • Material such as, for example, polyethylene terephthalate, sold under the trademark Mylar, has been found to function satisfactorily for the strip 86 due to its flexibility and toughness, and its quality of being resistant to chemical reaction with inks.
  • the ink system is devoid of ink, as would occur in the case of a newly installed printing machine, a change in ink colors, etc.
  • tip 44a is I severed or otherwise removed from neck 44 of container 40 and the container is inverted to the position shown in FIG. 4.
  • Neck44 is inserted into opening 48a of pump inlet 48 with a snug friction fit.
  • Cover 42 may be removed from container 40, although it has been found that merely loosening-the cover is sufficient to relieve any vacuum and permit the ink to be withdrawn from the container and, at the same time, prevent foreign matter from falling into the ink.
  • chamber C of ink fountain 22 contains no ink, diaphragm, 60, sensing plate 72 and sensing finger-.80 are in theretracted or broken line positions shown in FIG. 3.
  • sensing finger 80 reaches its oft position, thereby opening switch 82 v and discontinuing power through circuit 84, shutting off motor M, With the stopping of the motor, the action of pump P is arrested, thus, discontinuing supplying of ink to ink fountain 22.
  • operation of the printing machine i.e., the running of copies therefrom, need not wait until ink chamber C is completely filled.
  • the printing operation may be started when the ink in the chamber is at a level SUfiICiCl'IT. to provide a film of ink on the periphery of ink fountain roller 20 as the roller is normally rotated.
  • the novel arrangement disclosed provides automatic replenishment of the ink.
  • diaphragm 60 which is in contact with the upper level of ink ink supply may be described as resting thereon, follows the ink level as the ink is gradually withdrawn from chamber C. Such movement of diaphragm 60 continues until it reaches substantially the broken line position shown in FIG. 3.
  • Sensing finger 80 (and sensing plate 72, when used) follow movement of diaphragm 60, to positions also indicated by the broken lines. In this position, sensing finger 80 causes the closing of switch 82 to restore power to motor M through circuit 84, thus actuating pump P to start the cycle to again fill chamber C with ink.
  • diaphragm 60 is in contact with, and completely covers, the upper level of the ink during normal operation of the printing machine, there is no possibility of the surface of the ink in fountain 22 being subject to attack by oxygen as the diaphragm moves between its retracted and distended positions.
  • cer' tain conditions it may be desirable under cer' tain conditions to provide a follower F, FIG. 4, to assist in the uniform withdrawal of ink from container 40.
  • Such conditions may exist when stiff, pasty, or high-viscosity inks are employed. Normally, gravity beeps pump P primed. However, when the ink in the container is nearly exhausted, or at the approximate ink level shown in FIG. 4, gravity alone may not level the high-viscosity high-viscosity supply rapidly enough because of its stiff consistency. If this condition occurs, the pump pulls its ink from the center of the supply rapidly enough to form an air passage through to the surface. Pump P then sucks air and the ink flow stops well before container 40 is anywhere near empty.
  • follower F which it will be noted is of a dimension slightly less than the internal dimension of container 40, the suction created by pump P causes the ink body to move down uniformly and to prevent the formation of a central air passage so that practically all of the ink can be exhausted from container 40 by the pumping action.
  • the ink can be allowed to stand in the machine indefinitely with no need ever to clean the fountain unless a change of ink color is desired.
  • An enclosed ink supply system for a printing machine in which the ink is protected from exposure to the atmosphere comprising:
  • an ink fountain mounted on the printing machine, said ink fountain having a pair of openings therein;
  • an ink fountain roller rotatably mounted in one of said openings in said ink fountain in air-excluding relationship therewith;
  • a flexible diaphragm associated with the ink fountain so as to close the other opening in the fountain to thereby provide a substantially enclosed ink fountain structure in which the ink in the fountain is in contact with the walls of the fountain, the roller and the diaphragm and air is excluded from the fountain interior, said diaphragm adapted to flex between a retracted position and a distended position in relation to said fountain;
  • sensing finger coacting with the exterior of said diaphragm and movable thereby between said retracted and distended positions
  • switching means controlled by the sensing finger for activating said power means when the diaphragm is in the retracted position to thereby supply ink from the supply source to the fountain, and for deactivating the power means to thereby discontinue the supplying of ink to the fountain when the diaphragm is in the distended position.
  • said power means comprises an intermittently driven pump having an inlet for receiving ink from said supply source and an outlet connected with said fountain.
  • said supply source comprises a container which includes a follower to assist in uniform withdrawal of the ink from the container under the effects of atmospheric pressure.
  • An enclosed ink supply system for a printing machine in which the ink is protected from exposure to the atmosphere comprising:
  • an ink fountain mounted on the printing machine, said ink fountain having a pair of openings therein;
  • an ink fountain roller rotatably mounted in one of said openings in said ink fountain in air-excluding relationship therewith;
  • a flexible diaphragm associated with the ink fountain so as thereto with a mating sealing fit, and ready disconnection therefrom, said container having the end opposite said neck closed by a removable cover to permit filling and allow air access during emptying;
  • An enclosed ink supply system for a printing machine retracted position to thereby supply ink from the container to the fountain, and for arresting the power means to thereby discontinue the supplying of ink to the fountain when the diaphragm is in the distended position.
  • pumping means including an inlet fitting:

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  • Inking, Control Or Cleaning Of Printing Machines (AREA)
  • Ink Jet (AREA)
US748709A 1968-07-30 1968-07-30 Ink system for printing machines Expired - Lifetime US3631800A (en)

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US74870968A 1968-07-30 1968-07-30

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US (1) US3631800A (enrdf_load_stackoverflow)
CH (1) CH508481A (enrdf_load_stackoverflow)
FR (1) FR2013961B1 (enrdf_load_stackoverflow)
GB (2) GB1273034A (enrdf_load_stackoverflow)
NL (1) NL158739B (enrdf_load_stackoverflow)
SE (1) SE373068B (enrdf_load_stackoverflow)

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3779161A (en) * 1970-09-28 1973-12-18 Kurashiki Boseki Kk Screen printer with ink level sensing and control
US3780651A (en) * 1972-03-20 1973-12-25 H Farwell Screen printer ink supply with quick coupling and level sensing
US3815499A (en) * 1972-05-26 1974-06-11 Faustel Inc Ink applicator means for downside surface of printing press roll
US3994220A (en) * 1973-02-26 1976-11-30 Stork Amsterdam B.V. Pressurized squeegee with stiff resilient sealing strips
US4023487A (en) * 1973-01-04 1977-05-17 Mitter & Co. Printing machine with printing ink dispensing arrangement
US4092922A (en) * 1975-07-25 1978-06-06 Addressograph-Multigraph Corporation Lithographic ink supply
US4133459A (en) * 1977-06-02 1979-01-09 Xerox Corporation Deformable toner dispenser with flow rate controller
US4412491A (en) * 1981-12-28 1983-11-01 Pitney Bowes Inc. System for sensing an inking member in a value printing device
US4554870A (en) * 1983-03-08 1985-11-26 M.A.N.-Roland Druckmaschinen Aktiengesellschaft Ink metering device for a printing machine having an ink trough-ink roller combination
US5560294A (en) * 1994-01-18 1996-10-01 Man Roland Druckmaschinen Ag Device for inking a screen roller
US5799578A (en) * 1994-04-15 1998-09-01 Heidelberger Druckmaschinen Aktiengesellschaft Printing press and liquid supply
WO1999048692A1 (en) * 1998-03-23 1999-09-30 Black Clawson Company, Inc. Pressurized enclosed gravure applicator and method
US6220160B1 (en) * 1999-08-13 2001-04-24 David C. Weber Ink feeding system and method for a printing, duplicating or like machines
US6276275B1 (en) 1996-12-21 2001-08-21 Koenig & Bauer Aktiengesellschaft Ink fountain having sensors to determine presence of a roll of ink
US6705223B2 (en) * 2001-02-12 2004-03-16 Heidelberger Druckmaschinen Ag Inking unit for a printing machine
CN100553972C (zh) * 2004-11-11 2009-10-28 海德堡印刷机械股份公司 印刷机的刮墨板墨斗和印刷机

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2478958A1 (fr) * 1980-04-01 1981-10-02 Decoufle Dispositif d'alimentation en encre des appareils d'imprimerie pour machines a confectionner les cigarettes
DE19912881C2 (de) * 1999-03-23 2001-02-22 Technotrans Ag Vorrichtung zur Versorgung eines Farbspeichers einer Druckmaschine mit Farbe

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US477422A (en) * 1892-06-21 Oiling device
US2399688A (en) * 1942-03-09 1946-05-07 Standard Register Co Ink fountain
GB626707A (en) * 1946-06-21 1949-07-20 Hoe & Co R Improvements in inking mechanism for printing machines
US2889821A (en) * 1953-10-07 1959-06-09 John W Maki Engine lubricating system
US3025793A (en) * 1958-05-07 1962-03-20 Miehle Goss Dexter Inc Method and apparatus for changing inks in printing press fountains
US3029324A (en) * 1959-02-09 1962-04-10 Dole Valve Co Pneumatic relay system
GB954510A (en) * 1960-12-21 1964-04-08 Paul Albert Glatz A lithographic offset printing machine
US3316926A (en) * 1963-04-01 1967-05-02 Cummins Engine Co Inc Pressure responsive supply-exhaust valve
US3318238A (en) * 1964-10-16 1967-05-09 Gottscho Inc Adolph Ink fountain supply and drain means
US3342376A (en) * 1964-11-27 1967-09-19 Eastman Kodak Co Liquid handling device
US3354823A (en) * 1965-01-28 1967-11-28 Addressograph Multigraph Ink fountain for dispensing packaged ink
US3453138A (en) * 1966-07-27 1969-07-01 Polaroid Corp Photographic processing apparatus and method
US3470905A (en) * 1965-04-09 1969-10-07 Don Edward Heskett Pressure responsive device for controlling liquid level in tanks

Patent Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US477422A (en) * 1892-06-21 Oiling device
US2399688A (en) * 1942-03-09 1946-05-07 Standard Register Co Ink fountain
GB626707A (en) * 1946-06-21 1949-07-20 Hoe & Co R Improvements in inking mechanism for printing machines
US2889821A (en) * 1953-10-07 1959-06-09 John W Maki Engine lubricating system
US3025793A (en) * 1958-05-07 1962-03-20 Miehle Goss Dexter Inc Method and apparatus for changing inks in printing press fountains
US3029324A (en) * 1959-02-09 1962-04-10 Dole Valve Co Pneumatic relay system
GB954510A (en) * 1960-12-21 1964-04-08 Paul Albert Glatz A lithographic offset printing machine
US3316926A (en) * 1963-04-01 1967-05-02 Cummins Engine Co Inc Pressure responsive supply-exhaust valve
US3318238A (en) * 1964-10-16 1967-05-09 Gottscho Inc Adolph Ink fountain supply and drain means
US3342376A (en) * 1964-11-27 1967-09-19 Eastman Kodak Co Liquid handling device
US3354823A (en) * 1965-01-28 1967-11-28 Addressograph Multigraph Ink fountain for dispensing packaged ink
US3470905A (en) * 1965-04-09 1969-10-07 Don Edward Heskett Pressure responsive device for controlling liquid level in tanks
US3453138A (en) * 1966-07-27 1969-07-01 Polaroid Corp Photographic processing apparatus and method

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3779161A (en) * 1970-09-28 1973-12-18 Kurashiki Boseki Kk Screen printer with ink level sensing and control
US3780651A (en) * 1972-03-20 1973-12-25 H Farwell Screen printer ink supply with quick coupling and level sensing
US3815499A (en) * 1972-05-26 1974-06-11 Faustel Inc Ink applicator means for downside surface of printing press roll
US4023487A (en) * 1973-01-04 1977-05-17 Mitter & Co. Printing machine with printing ink dispensing arrangement
US3994220A (en) * 1973-02-26 1976-11-30 Stork Amsterdam B.V. Pressurized squeegee with stiff resilient sealing strips
US4092922A (en) * 1975-07-25 1978-06-06 Addressograph-Multigraph Corporation Lithographic ink supply
US4133459A (en) * 1977-06-02 1979-01-09 Xerox Corporation Deformable toner dispenser with flow rate controller
US4412491A (en) * 1981-12-28 1983-11-01 Pitney Bowes Inc. System for sensing an inking member in a value printing device
US4554870A (en) * 1983-03-08 1985-11-26 M.A.N.-Roland Druckmaschinen Aktiengesellschaft Ink metering device for a printing machine having an ink trough-ink roller combination
US5560294A (en) * 1994-01-18 1996-10-01 Man Roland Druckmaschinen Ag Device for inking a screen roller
US5799578A (en) * 1994-04-15 1998-09-01 Heidelberger Druckmaschinen Aktiengesellschaft Printing press and liquid supply
US6276275B1 (en) 1996-12-21 2001-08-21 Koenig & Bauer Aktiengesellschaft Ink fountain having sensors to determine presence of a roll of ink
WO1999048692A1 (en) * 1998-03-23 1999-09-30 Black Clawson Company, Inc. Pressurized enclosed gravure applicator and method
US6210757B1 (en) 1998-03-23 2001-04-03 Black Clawson Company, Inc. Pressurized enclosed gravure applicator and method
US6220160B1 (en) * 1999-08-13 2001-04-24 David C. Weber Ink feeding system and method for a printing, duplicating or like machines
US6705223B2 (en) * 2001-02-12 2004-03-16 Heidelberger Druckmaschinen Ag Inking unit for a printing machine
CN100553972C (zh) * 2004-11-11 2009-10-28 海德堡印刷机械股份公司 印刷机的刮墨板墨斗和印刷机

Also Published As

Publication number Publication date
DE1938525A1 (de) 1970-02-05
DE1938525B2 (de) 1975-07-31
NL158739B (nl) 1978-12-15
CH508481A (fr) 1971-06-15
FR2013961B1 (enrdf_load_stackoverflow) 1976-01-09
NL6910592A (enrdf_load_stackoverflow) 1970-02-03
GB1273033A (en) 1972-05-03
FR2013961A1 (enrdf_load_stackoverflow) 1970-04-10
GB1273034A (en) 1972-05-03
SE373068B (enrdf_load_stackoverflow) 1975-01-27

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