US3645202A - Lithographic inking dampening system - Google Patents
Lithographic inking dampening system Download PDFInfo
- Publication number
- US3645202A US3645202A US25507A US3645202DA US3645202A US 3645202 A US3645202 A US 3645202A US 25507 A US25507 A US 25507A US 3645202D A US3645202D A US 3645202DA US 3645202 A US3645202 A US 3645202A
- Authority
- US
- United States
- Prior art keywords
- ink
- roll
- pan
- moisture
- supply
- 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
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
- B41F31/06—Troughs or like reservoirs with immersed or partly immersed, rollers or cylinders
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F7/00—Rotary lithographic machines
- B41F7/20—Details
- B41F7/24—Damping devices
- B41F7/36—Inking-rollers serving also to apply ink repellants
Definitions
- rollers divide and smooth out the ink until, ostensibly, the final roller which delivers the ink to the surface of a master printing plate on the master cylinder presents an extremely fine and evenly divided layer of ink. Presses for high-quality halftone printing have a greater number of such rollers whereas the more utilitarian presses used for line copy such as typing and artist drawing can use far fewer rollers efficiently.
- ADVANTAGES AND OBJECTS One of the primary advantages of this invention is that the path from the bulk ink supply to the demand area on a master cylinder is exceedingly short. Hence, it is an object of this invention to provide a fully adequate ink supply to meet any demand situation.
- a further advantage of this invention is that liquid ink is metered to the form roll by means of a shear blade which establishes a completely uniform coating on the ink roll and hence to the form.
- a further advantage of this invention is to provide a complete ink and lithographic moisture fountain supply which is readily removable from the machine for cleaning.
- FIG. 1 is a substantially schematic side elevation with some parts in cross section, illustrating the principals of the invention
- FIG. 2 is an end elevation view FIG. 1, but illustrating essentially only the supply system without the operating structure behind.
- a form roll 12, an ink roll 14 and a moisture roll 16 all are in surface contact with one another and the form roll is positioned to contact the surface of the master cylinder whenever the entire system is moved forward to cause such contact. Otherwise, the assembly of the three rolls and its supporting structure may be physically removed such that the roll 12 does not make contact.
- the contacting or not as the case may be is for the same reason that any form roll in any lithographic inking system is caused to contact or not.
- This illustrated embodiment of the invention is built upon two side plates 18, and the rolls 12, 14 and 16 are journaled on the side plates by conventional bearings and mounting devices.
- the conventional inking system by using a series of rolls, causes an original deposit of ink or moisture to be passed to the next roll, and thus subdivided.
- the first roll will keep half and provide half to the subsequent roll. This dividing and subdividing process is continued until the necessary distribution and metering of both ink and moisture is achieved.
- the moisture is metered from the moisture roll 16 by means of a rod 20 which has a face shear blade 21 of compliant elastomer.
- the blade In the illustrated position as shown in FIG. 1, the blade is tangential to the roller 16 and hence has a minimum wiping or shearing effect. Hence, a maximum film of moisture will be able to wedge between the face of the blade 21 and the surface of the roll 16.
- the amount of moisture is diminished by causing the rod to rotate about its axis and thus place a smaller surface area of the shear blade 21 against the surface of the roll 16. Hence, any pressure applied to the rod 20 will be applied through the blade in a smaller total area and therefore will cause a greater proportion of moisture to be stripped away from the surface of the roll 16.
- the rod 20 is mounted between a pair of links 22, each being positioned laterally near the opposed walls 18.
- the rod 20 is affixed to the one end oflink 22 and hence is not free to float with respect to the link. Consequently, turning the link will cause the face of the blade 21 to turn.
- one end of link 22 is pivotally mounted to a pressure applicator link 24.
- the at titude of link 22 is controlled by attaching a link 26 to its opposite end.
- a pivot 28 for the link 24 permits application of pressure.
- an adjacent screw 30 on the top end of link 24 operates against a swingable link 31.
- Link 31 is pivoted at 32 and is pulled toward the link 24 by means of a spring 33.
- Adjustment of the longitudinal extend of the screw 30 will determine the amount of pressure applied to the rod 20, and the longitudinal position of link 26 will determine the rotational attitude of the rod 20 and hence the amount of area of the blade 21 subjected to the available pressure.
- the link 26 is adjustable by the operator through an apparatus which includes a guide yoke 36 extending laterally across the structure between the plate 18 and adapted thereby to guide a rod 38 in a forward and rearward movement.
- a rod 40 is connected between the side plates and serves as a pivotal support for the yoke.
- the rod 40 is drilled to accept a stem of a threaded rod 42, which threaded rod is threadably engaged substantially at the center of the rod 38 and therefore is adapted to drive the rod 38 forward or rearwardly in the bit of the yoke 36 and hence drive the link 26 in producing the desired attitude of blade 21.
- the ink roll 14 is contacted by a shear blade 34 to remove ink from the surface of the roll to the degree desired.
- the roll 14 is caused to run with its lower perimeter area immersed in lithographic ink made liquid by a high percentage of extremely volatile solvent.
- any ink which is carried past the shear blade 34 and immediately deposited on the form roll 12 will be rapidly subjected to an increased viscosity and will permit deposit of a suitably viscuous form of ink onto the master on the master cylinder 10 for proper inking and printing function.
- the ink and moisture solution are supplied to the rollers 14 and 16 in this particular embodiment by means of a pan 45 having a dividing floor 47 to mechanically separate the ink from the moisture area.
- the ink in this particular embodiment is in the lower compartment in order to flow forward and reach the ink roll 14, whereas the moisture is confined in the upper compartment where the roll 16 is partially immersed therein.
- An ink bottle for supply of liquid ink is indicated by reference character 49 and is held by a bracket 50.
- the bottle 49 has a long neck portion which reaches down and extends through an opening in the floor 47 and thereby provides a constant supply of the fluid ink to that area.
- the level is maintained by the well known physical principles of pressure differential.
- a moisture solution bottle 51 is also held by a bracket 52, and that bottle 51 is elevated in order that the moisture solution will be applied only into the upper area above the floor 47.
- the pan is supported by rollers 54 shown in FIG. 1 at the remote end of the pan.
- Other rollers 53 are mounted on the ends of a rod 55 shown at the forward portion of the pan.
- the rod 55 extends across the bottom between the rollers 53 and is supported by readily removable bearing members for disengagement of the rod 55 from the sideplates 18.
- a bracket 56 secured to the bottom of the pan 45 accepts a threaded rod 57.
- the rod 57 is secured rotatably to the rod 55 and hence enables the operator to adjust the longitudinal pan position.
- the shear blade 34 for the roll 14 is mounted on the end of the pan and therefore the operator adjusts the pan position in order to adjust the shear blade pressure against the roller 14 for metering the amount of ink desired.
- the pan is held tight against rollers 54 by rollers 58 which ride a top edge of the pan.
- the pan can move laterally a limited distance, supported by the top and bottom roller sets 54 and 58, but because of the end wall configuration of the pan, it cannot be fully removed by rectilinear movement.
- the front, or remote end of the pan has a closed track configuration in which the front roller 58 resides.
- the pan and the roller 58 will separate.
- the lower edge of the pan then will clear the remote roller 54 and allow the pan to drop at the front end.
- the pan may be pulled free of the restraining rollers and removed from the machine for cleaning.
- a liquid ink lithographic printing system comprising:
- a fountain pan means for providing and maintaining oleous liquid lithographic ink to a preselected level in said pan; means for positioning said pan to immerse a portion of said ink supply roll below said level;
- a moisture solution pan means for providing and maintaining a lithographic moisture solution to a preselected level in said moisture solution pan;
- the moisture solution pan is nested within said ink fountain pan and each is kept to the predetermined level by gravity supply bottles.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Inking, Control Or Cleaning Of Printing Machines (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US2550770A | 1970-04-03 | 1970-04-03 |
Publications (1)
Publication Number | Publication Date |
---|---|
US3645202A true US3645202A (en) | 1972-02-29 |
Family
ID=21826489
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US25507A Expired - Lifetime US3645202A (en) | 1970-04-03 | 1970-04-03 | Lithographic inking dampening system |
Country Status (6)
Country | Link |
---|---|
US (1) | US3645202A (de) |
BE (1) | BE765158A (de) |
CA (1) | CA928570A (de) |
DE (1) | DE2113722A1 (de) |
FR (1) | FR2089093A5 (de) |
GB (1) | GB1315299A (de) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3805700A (en) * | 1970-08-17 | 1974-04-23 | Etudes De Machines Speciales | Damping device for rotary offset printing machine |
US4092922A (en) * | 1975-07-25 | 1978-06-06 | Addressograph-Multigraph Corporation | Lithographic ink supply |
US4287827A (en) * | 1979-05-17 | 1981-09-08 | Warner Gordon R | Combined inking and moistening roller |
US4407196A (en) * | 1980-02-29 | 1983-10-04 | American Newspaper Publishers Association | Method of enhancing inking in offset presses |
US4703690A (en) * | 1985-07-19 | 1987-11-03 | Ferd Buesch Ag | Device for pre-emulsifying of ink emulsion in offset printing apparatus |
US6393983B1 (en) * | 1999-10-21 | 2002-05-28 | Kabushiki Kaisha Tokyo Kikai Seisakusho | Ink rail for printing press |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US430269A (en) * | 1890-06-17 | Apparatus for | ||
US2240762A (en) * | 1938-01-12 | 1941-05-06 | Maschf Augsburg Nuernberg Ag | Inking apparatus for aniline color printing machines |
US2534320A (en) * | 1946-05-16 | 1950-12-19 | Champion Paper & Fibre Co | Apparatus for coating paper |
US2689522A (en) * | 1949-10-11 | 1954-09-21 | Addressograph Multigraph | Inking and moistening means for rotary planographic printing machines |
US2733654A (en) * | 1956-02-07 | Inking and repellent system for plano- | ||
US3343484A (en) * | 1964-12-16 | 1967-09-26 | Harold P Dahlgren | Lithographic dampener with skewed metering roller |
US3352317A (en) * | 1964-12-09 | 1967-11-14 | Dahlgren Mfg Company Inc | Dampening fluid cooling and circulating apparatus for lithographic offset press dampening device |
-
1970
- 1970-04-03 US US25507A patent/US3645202A/en not_active Expired - Lifetime
-
1971
- 1971-02-17 CA CA105611A patent/CA928570A/en not_active Expired
- 1971-03-22 DE DE19712113722 patent/DE2113722A1/de active Pending
- 1971-04-01 BE BE765158A patent/BE765158A/xx unknown
- 1971-04-02 FR FR7111710A patent/FR2089093A5/fr not_active Expired
- 1971-04-19 GB GB2598371*A patent/GB1315299A/en not_active Expired
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US430269A (en) * | 1890-06-17 | Apparatus for | ||
US2733654A (en) * | 1956-02-07 | Inking and repellent system for plano- | ||
US2240762A (en) * | 1938-01-12 | 1941-05-06 | Maschf Augsburg Nuernberg Ag | Inking apparatus for aniline color printing machines |
US2534320A (en) * | 1946-05-16 | 1950-12-19 | Champion Paper & Fibre Co | Apparatus for coating paper |
US2689522A (en) * | 1949-10-11 | 1954-09-21 | Addressograph Multigraph | Inking and moistening means for rotary planographic printing machines |
US3352317A (en) * | 1964-12-09 | 1967-11-14 | Dahlgren Mfg Company Inc | Dampening fluid cooling and circulating apparatus for lithographic offset press dampening device |
US3343484A (en) * | 1964-12-16 | 1967-09-26 | Harold P Dahlgren | Lithographic dampener with skewed metering roller |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3805700A (en) * | 1970-08-17 | 1974-04-23 | Etudes De Machines Speciales | Damping device for rotary offset printing machine |
US4092922A (en) * | 1975-07-25 | 1978-06-06 | Addressograph-Multigraph Corporation | Lithographic ink supply |
US4287827A (en) * | 1979-05-17 | 1981-09-08 | Warner Gordon R | Combined inking and moistening roller |
US4407196A (en) * | 1980-02-29 | 1983-10-04 | American Newspaper Publishers Association | Method of enhancing inking in offset presses |
US4703690A (en) * | 1985-07-19 | 1987-11-03 | Ferd Buesch Ag | Device for pre-emulsifying of ink emulsion in offset printing apparatus |
US6393983B1 (en) * | 1999-10-21 | 2002-05-28 | Kabushiki Kaisha Tokyo Kikai Seisakusho | Ink rail for printing press |
Also Published As
Publication number | Publication date |
---|---|
GB1315299A (en) | 1973-05-02 |
DE2113722A1 (de) | 1971-10-14 |
FR2089093A5 (de) | 1972-01-07 |
CA928570A (en) | 1973-06-19 |
BE765158A (fr) | 1971-08-30 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US6672211B2 (en) | Inking systems for printing presses | |
US3168037A (en) | Means for dampening lithographic offset printing plates | |
US4432282A (en) | Printing press | |
US6951174B2 (en) | Printing systems and methods using keyless inking and continuous dampening | |
US3587463A (en) | Simplified circulating inking system for rotary newspaper printing press | |
US4208963A (en) | Newspaper printing system | |
DK154195B (da) | Fugte-farvevaerk for offsettrykmaskiner | |
US4373442A (en) | Portable ink fountain | |
JPH0242666B2 (de) | ||
US4186661A (en) | Flexographic inking system including a reverse angle doctor blade | |
US4407196A (en) | Method of enhancing inking in offset presses | |
US4233898A (en) | Reversible newspaper press | |
US4610201A (en) | Printing unit with short inking device | |
US2733654A (en) | Inking and repellent system for plano- | |
US2310788A (en) | Means for inking printing forms | |
US3259062A (en) | Process for applying a water-soluble organic dampening fluid | |
US3645202A (en) | Lithographic inking dampening system | |
US2293691A (en) | Apparatus for coating web material | |
US3146706A (en) | Dampening system for lithographic printing presses | |
JPS60242065A (ja) | 輪転印刷機の版胴の版盤にインキを着けるインキ装置 | |
US4237785A (en) | Inker for applying newsprint type ink | |
US2213419A (en) | Inking mechanism | |
US3902417A (en) | Wetting system for rotary offset printing presses | |
US4928623A (en) | Varnish coating mechanism | |
GB2069932A (en) | Reversible printing press |