WO1999029510A1 - Rotary short inker - Google Patents
Rotary short inker Download PDFInfo
- Publication number
- WO1999029510A1 WO1999029510A1 PCT/GB1998/003600 GB9803600W WO9929510A1 WO 1999029510 A1 WO1999029510 A1 WO 1999029510A1 GB 9803600 W GB9803600 W GB 9803600W WO 9929510 A1 WO9929510 A1 WO 9929510A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- roll cylinder
- cylinder
- inker
- roll
- final
- Prior art date
Links
Classifications
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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
- B41F31/30—Arrangements for tripping, lifting, adjusting, or removing inking rollers; Supports, bearings, or forks therefor
- B41F31/302—Devices for tripping inking devices as a whole
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C1/00—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating
- B05C1/04—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length
- B05C1/08—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length using a roller or other rotating member which contacts the work along a generating line
- B05C1/0817—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length using a roller or other rotating member which contacts the work along a generating line characterised by means for removing partially liquid or other fluent material from the roller, e.g. scrapers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C1/00—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating
- B05C1/04—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length
- B05C1/08—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length using a roller or other rotating member which contacts the work along a generating line
- B05C1/0826—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length using a roller or other rotating member which contacts the work along a generating line the work being a web or sheets
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C11/00—Component parts, details or accessories not specifically provided for in groups B05C1/00 - B05C9/00
- B05C11/02—Apparatus for spreading or distributing liquids or other fluent materials already applied to a surface ; Controlling means therefor; Control of the thickness of a coating by spreading or distributing liquids or other fluent materials already applied to the coated surface
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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
- B41F31/06—Troughs or like reservoirs with immersed or partly immersed, rollers or cylinders
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41P—INDEXING SCHEME RELATING TO PRINTING, LINING MACHINES, TYPEWRITERS, AND TO STAMPS
- B41P2217/00—Printing machines of special types or for particular purposes
- B41P2217/10—Printing machines of special types or for particular purposes characterised by their constructional features
- B41P2217/11—Machines with modular units, i.e. with units exchangeable as a whole
Definitions
- This invention relates to inkers for printing presses.
- All materials intended to be coated on a substrate by printing/screening i.e. the laying down of a layer of the material from a roll cylinder irrespective of whether the layer is patterned
- printing media including those referred to in the preceding paragraph, are herein referred to generically as printing media, irrespective as to whether they are intended to form a visible image.
- the ink is passed to a soft or hard plain roller via a series of alternatively soft and hard rollers, arranged so that the ink film, which when initially picked up from a reservoir is thick, is progressively thinned.
- No doctor blade is provided on the final roller in this arrangement.
- the rotation axes of successive roll cylinders are normally at a small angle above the horizontal to each other. Coat weights are low.
- the final or anilox roll cylinder is formed of a hard material, such as steel or a ceramic . It is provided with a doctor blade, and its surface is screened or has a cell structure, to receive the printing medium. Again, the rotation axes of successive roll cylinders are normally at a small angle above the horizontal to each other.
- the edge of the doctor blade is relatively sharp, and always in direct or extremely close contact with the surface so that when the latter contacts the printing plate the only ink thereon for transfer is essentially that within the cell structure.
- the blade can be arranged to point in (known as reverse orientation) or against the direction of rotation of the anilox roll cylinder as determined by the printer. Contact between the doctor blade and the anilox roll cylinder wears both components, which eventually need to be replaced.
- the present invention provides a roll cylinder for an inker for a printing press, said roll cylinder having a surface of rubber or synthetic polymeric or resin material and being provided with a doctor blade.
- the surface of the cylinder may or may not have a cell structure, and the Shore hardness of its surface is preferably in the range of 25 to 70°. In practice the Shore hardness of the said surface may be selected conjointly with the flow properties of a printing medium to be used.
- the first aspect extends to a method of printing using such a roll cylinder with doctor blade (an anilox cylinder), to an inker comprising such an anilox cylinder, and to a method of printing using an inker comprising such an anilox cylinder.
- the inker will comprise an ink train of at least two roll cylinders which extends from an ink reservoir and includes a final anilox roll cylinder which in use comes into contact with a printing plate, the anilox roll cylinder being constituted by the "soft" anilox cylinder.
- the surface of each roll cylinder may be of rubber or synthetic polymeric or resin material.
- the printer will exercise skill in the choice of printing medium, in particular the flow characteristics thereof, printing speed, etc. as with conventional arrangements.
- a further variable which can be controlled to produce desired results viz. the Shore hardness of the surface(s) of the soft roll cylinder(s) of the train, particularly that of the anilox roll cylinder.
- the "soft" surface includes a screen structure, this lowers the apparent Shore hardness.
- the viscosity of the printing medium the lower the Shore hardness which is required for a given coating weight.
- the Shore hardness (as measured by a conventional Shore hardness meter) of at least the anilox cylinder (and more preferably of all the cylinders in the train) is at least 15°, preferably at least 20°, and more preferably at least 25°. It is preferably 70° or less, and more preferably 40° or less.
- a "soft" cylinder surface yields to a certain extent in the vicinity of the nip formed with an adjacent doctor blade and/or the surface of an adjacent cylinder, depending on the viscosity of the printing medium, so permitting a fixed amount of printing material to pass through the nip. Excess printing medium is retained at the front of the nip, providing a reservoir for distribution along the length of the nip if necessary, as determined by the image to be printed.
- the "soft" roll cylinder is demountable, preferably as an integral unit including its associated doctor blade (as with the cassette frame construction outlined below) , thus facilitating changing of cylinders, for example to another "soft" cylinder, or to a hard cylinder.
- the invention extends to the combination of an inker according to the first aspect with at least one further final roll cylinder, the final cylinders having different Shore hardnesses.
- the printer will select the appropriate anilox roll cylinder having regard to other parameters such as printing speed and flow properties of the printing medium.
- the Shore hardness and viscosity of the printing medium may be selected conjointly to produce a desired coating weight.
- the wide range of coating weights available by varying other parameters such as print speed and doctor blade spacing, mean that it is likely that further substitution of the anilox roll cylinder may only be necessary for very particular requirements.
- the other cylinders of the train are also be replaceable in a similar manner, as appropriate.
- doctor blade can be, and preferably is, spaced from the surface, so that no contact wear occurs between the blade and the cylinder surface. In the embodiments the doctor blade is reversed and blunt.
- the spacing is believed to permit a printing medium to have a finite thickness beyond the periphery of the final cylinder, and adjustable control of the amount of spacing enables the coating weight to be adjustably controlled, at least within the limits indicated above.
- the coating weight produced by the use of the invention is greater than 4 gm/m 2 , and more preferably at least 8 gm/m 2 .
- a commonly desired range of coating weight of 8 to 15 gm/m 2 more commonly 8 to 10 gm/m 2 can easily and routinely be achieved with the present invention.
- first and/or second aspects it is also possible with the invention of the first and/or second aspects to provide lower coating weights, for example 2.8 gm/m 2 , so that the same apparatus can be used for weights within the printing range provided by conventional presses. This could be achieved, for example, by adjusting the doctor blade.
- blade spacing and coating weight makes it possible to operate such an inker by providing means for measuring the coating weight or coating thickness of a printed product leaving, or which has left, the final roll cylinder, and means for controlling the position of the doctor blade relative to the surface of its associated roll cylinder in accordance with the measured coating weight or coating thickness, e.g. to produce a closely controlled constant coating weight, or to vary the coating weight in a controlled manner, even during a print run.
- the invention therefore also encompasses an inker for a printing press comprising a final roll cylinder provided with a doctor blade, means for measuring the coating weight or coating thickness of a printed product leaving, or which has left, the final roll cylinder, and means for controlling the position of the doctor blade relative to the surface of the final roll cylinder in accordance with the measured coating weight or coating thickness, and a method of printing using such an inker.
- doctor blade and anilox roller affects the coating weight
- variable printing weights can be obtained widthwise.
- a continuous smooth gradation of tone of large range (even a range extending to white) across the print width could be obtained by angling a doctor blade (conformable to the anilox cylinder) relative to the anilox cylinder. If the blade is not conformable, a gradation other than linear/smooth could be obtained.
- the gradation on the printed product will also be modified by what is on the plate cylinder.
- both of the embodiments of inker to be described include an anilox roll cylinder vertically above the preceding cylinder.
- anilox roll cylinder is a conventional hard (screened) cylinder roll. It is believed that at least some of the difficulties encountered when using a hard anilox roll cylinder in the more conventional near horizontal alignment are caused by the entrapment of air between the anilox and preceding cylinder at the nip, resulting in less than complete filling of the screened surface.
- nip 16 tends to be more completely filled with ink, thereby avoiding any danger of air entrainment.
- the second consequence which may in fact turn out to be the more important, is that ink tends to rise up the surface of the anilox roll cylinder 8 prior to the nip, presumably because of the "pumping" action of the preceding cylinder 7 and the reduced gravitational pull downwards. This means that the anilox cylinder surface encounters fresh printing medium at an earlier stage, giving the medium more time to enter the screened surface and fill it completely.
- the invention provides a rotary inker comprising an ink train consisting of at least two roll cylinders extending between means for supplying a printing medium and a final roll cylinder which in use comes into contact with a printing plate, wherein the final roll cylinder of the train is provided with a doctor blade, and the final roll cylinder and the preceding roll cylinder have rotation axes in a common plane at no more than 30°, and preferably no more than 15°, to the vertical. Most preferably the common plane is substantially vertical.
- a printing system comprising a train of roll cylinders in which at least one or more of the roll cylinders may be simply and cleanly removed for replacement or cleaning.
- a final anilox cylinder by another of differing Shore hardness, e.g. one being a conventional "hard" cylinder, and the other having a surface of rubber or synthetic polymeric or resin material.
- a printing system in which fly and splash of the printing medium to the external environment can be reduced or avoided.
- cylinders with rotation axes which are vertical one over the other as in the second aspect of the invention gives rise to a further advantage in that it is relatively easy to provide a cassette frame system for an inker in which at least one roll cylinder is mounted in a cassette frame.
- the cassette frame is mountable in a skeletal or basic framework which holds the cylinders in a predetermined register, preferably adjustable.
- the cassette frame(s) is demountable from the framework, for example by lifting, but preferably by sliding, for easy removal or replacement and storage of the associated cylinder.
- the or each cassette is in position in the skeletal framework it is sealed save for apertures necessary for operation, thereby reducing exposure of the cylinders to the environment, and also reducing external splashing or spray of the printing medium.
- any adjuncts normally associated with a particular roll cylinder such as the doctor blade of an anilox cylinder, or an ink reservoir or other feed arrangement for a meter cylinder can also be mounted in the associated cassette.
- Cassette frames with their cylinders which are not in use could be stored in a further framework, again preferably by sliding therein, e.g. one over another, to protect the cylinders .
- This is important in protecting the surfaces of the cylinders, and avoids the contamination of or from the inked surfaces thereof, and is particularly important where the printing medium is sensitive to a factor, for example ultra-violet light, insofar as it can be arranged for the cylinder surface to be shielded from such a factor while being stored.
- the invention also encompasses a rotary inker for a printing press, said inker comprising means for supplying a printing medium, and a train of roll cylinders including a meter roll cylinder for picking up the printing medium from the source, a plate cylinder, and at least one roll cylinder between the meter roll cylinder and the plate cylinder, said at least one roll cylinder including an anilox roll cylinder contacting the plate cylinder for transferring thereto printing medium picked up by the meter roll cylinder, wherein any one, or any two, or each of said anilox roll cylinder, plate cylinder and meter roll cylinder is mounted in a respective cassette frame, said cassette frame being removable with its roll cylinder from said inker.
- Figure 2 shows a cross section of the inker of Figure 1 taken along lines A-A;
- Figure 3 is a first perspective view of the inker of Figure 1 ;
- Figure 4 is a second perspective view of the same inker.
- Figure 5 is a front view of a second embodiment of short inker
- Figure 6 is a side cross-sectional view of the embodiment of Figure 5;
- Figure 7 is a cross-section view along the line 7-7 og Figure 6 ;
- Figures 8a and 8b illustrate very schematically the nip for different cylinder arrangements.
- the rotary short inker shown in Figure 1 comprises an ink feeder portion 1 above which is mounted a printing portion 2.
- the printing portion comprises an impression or plate cylinder 3 carrying a printing plate 4 , which in use is contacted by a web 15 of a printable substrate, for example of paper, transported round a paper transport cylinder 5.
- a web 15 will be continuous, as shown, but alternatively, for example, some form of sheet feeder will be provided.
- plate 4 is a relief plate, constituting a known, economically produced and readily changeable form of image bearing means, but it should be understood that the alternative forms of plate, for example a lithographic plate, could be used.
- a direct printing arrangement is shown, in which ink from the plate is transferred directly to the paper web, an offset arrangement in which a blanket roll cylinder is placed between the printing plate and the printable substrate, could alternatively be provided.
- the invention is not to be construed as being limited to direct printing processes, nor to the use of relief printing plates, nor to the use of any particular form of printable substrate or printing or coating medium.
- the ink feeder portion 1 comprises a base portion 6 which in use acts as a reservoir for the ink or other printing medium.
- a meter roll cylinder 7 is arranged so that its lower surface dips into the reservoir and picks up and becomes coated by printing medium therefrom.
- a simple reservoir is shown, it should be understood that any known form of printing medium source could be used, and commonly the medium is pumped to the reservoir by a recirculating pump to maintain the reservoir at a predetermined level.
- An alternative arrangement would be, for example, one in which the printing medium is pumped over the meter roll, excess medium from the meter roll being collected in a tray for recirculation.
- An upper roll cylinder 8 is arranged to contact the meter roll cylinder or at least the printing medium coated thereon, whereby the printing medium is transferred to roll cylinder 8, and is located vertically above the meter cylinder.
- the roll cylinder 8 is commonly known as an anilox roll, and this term is herein used for the final roll of any train of inking roll cylinders, immediately preceding the printing plate bearing an image to be printed.
- the anilox roll cylinder 8 is arranged to contact the surface of the relief plate 4 so that ink is transferred to the image portions thereof, and from the plate 4 to the paper web around the roll cylinder 5. It will be understood that successive roll cylinders in the train from meter roll cylinder 7 to paper transport roll cylinder 5 are arranged in a counter-rotating sequence.
- a doctor blade 9 is mounted adjacent the roll cylinder 8, and is rotatably mounted so that the distance of the edge of the blade 9 can be adjusted with respect to the roll cylinder 8 , to control the amount of ink on the roll cylinder, and thus the amount of ink which is transferred to the relief plate and the paper web. In part, it also serves to ensure that the coating weight of the printing medium on the paper web is uniform over the whole area of the printed image.
- the anilox roll cylinder is replaceable, and this feature is preferably retained. This enables the inker to be used with different "soft" anilox cylinders as in the present invention, but with different degrees of Shore hardness, and/or with a conventional hard steel or ceramic roll cylinder.
- the operative edge of the doctor blade is preferably blunt and adjusted in use to be spaced somewhat away from the anilox roll cylinder. This also facilitates any requirement for a high coating weight, by enabling a thicker coating to be formed on the anilox roll cylinder. Still more preferably, in such an arrangement, the doctor blade is reversed, with its operative edge facing in the direction of rotation of the anilox roll cylinder. It is believed that this is the best arrangement, for ensuring that the streaking referred to above is avoided, the blade merely acting to shear away surplus printing medium over a predetermined thickness, rather than exerting any cutting action. Furthermore, the lack of mutual contact markedly reduces wear of both the blade and the anilox roll cylinder.
- the anilox roll cylinder has a screened or cell structure, an untextured surface could be employed.
- the doctor blade can be adjusted away from the cylinder surface so that the printing medium thereon as it comes into contact with the printing plate lies not only within the cell structure, but above such structure, i.e. above the cylinder surface.
- a further advantage of having the doctor blade spaced from the surface of the anilox cylinder is that it provides a further variable for control of the printing process, and of the coating weight. Whereas coating weight in a system using a hard anilox roller is dependent on factors such as viscosity of the printing medium and the cell structure of the anilox cylinder, some or all of which can be difficult to alter readily, doctor blade spacing can be altered relatively easily. This feature therefore permits a printing press to be set up with final control of coating weight being left to adjustment of the position of the doctor blade.
- the process can be automated by using the measurement to control the doctor blade spacing so as to ensure a predetermined coating weight is attained.
- anilox cylinder is a hard one, it will be provided with a doctor blade which in use will be in contact with it, in reverse or forward orientation, but, even so, coating weights are increased over the equivalent arrangement where the final two rollers are not substantially vertically arranged with respect to each other.
- anilox roll cylinder is a "soft" one, extremely good results are obtained in terms of high coating weight, uniformity of coating weight, etc.
- the versatility provided by being able to use roll cylinders of different hardnesses and/or "vertically" arranged roll cylinders means that printing media having widely different flow characteristics can be employed.
- the framework for the basic roll cylinder arrangement shown in the Figures is provided with removable webbed side guards 10 which enclose the ends of the roll cylinders in both the ink feeder and the printing portions.
- Fixed vertical panels 11, 12 lie to front and back of the ink feeder portion 1, and a cranked lid panel 13 is hinged to the rear panel 12 so as to overlie the plate cylinder and paper transport cylinder for access thereto.
- Guards 10 and panels 11 to 13 provide essentially continuous sealing of the interior of the inker save for a relatively narrow opening for feeding the substrate to the transport cylinder.
- External adjustment of the position of the doctor blade is provided by a mechanism 14 of known structure.
- Such an arrangement is effective in preventing the printing medium widely contaminating the workplace around the inker. Furthermore, it avoids the need to have seals directly on the roll cylinders, the printing medium being free to move around the interior of the inker, and particularly the ink feeder portion itself, and eventually to return to the reservoir in the ink feeder portion 1.
- the basic framework comprises two continuous side panels, and a rear panel 17 of lesser height, which are connected together so as to stand vertical.
- Other joining means such as tie rods or plates can be provided to ensure rigidity.
- cassette frames 18 to 20 which are mountable in superposition within the basic framework in known manner, each provided with pull handles 26. For example they may cooperate with guides in the framework, so that they can be individually inserted or withdrawn by sliding independently of the other cassette frames.
- the upper cassette frame 20 is so mounted, being top hung on a slide arrangement 24; and the bottom cassette frame 18 rests on a bar support 25, also having a pull handle 26 which itself is slidably mounted in the framework.
- the lowest cassette frame 18 consists of a rectangular base plate and two upstanding sides plus a back and a front, all of equal height, to form an open box.
- the box shape enables the storage or handling of printing media, and it may act as a simple reservoir, as shown, provided with means such as a chute 21 for adding the printing medium, the base plate being substantially continuous.
- a chute 21 for adding the printing medium, the base plate being substantially continuous.
- other printing medium supply arrangements known per se may be employed, for example, a pump inlet and outlet for continuous circulation of the medium.
- a meter roll cylinder 7 is journalled into the side of the cassette frame 18, its upper extremity lying substantially at the top of the frame.
- the meter roll cylinder 7 is provided with an adjustable doctor blade 30, shown reversed, for controlling the amount of ink in the nip between the cylinder 7 and an adjacent anilox roll cylinder 8.
- Blade 30 is also mounted to the frame 18. It would normally be spaced from the cylinder 7.
- the intermediate cassette frame 19 comprises two sides a front and a back, all of equal height, arranged to form a rectangle or square, and the anilox roll cylinder 8 is journalled to the sides, with its upper and lower extremities substantially level with the top and bottom of the sides.
- a doctor blade 9 is mounted to the sides and is adjustable for spacing relative to the anilox roll cylinder. Where the latter is a "soft" cylinder, it is preferred that the range of doctor blade adjustment is such that contact with the anilox cylinder is not possible, or only just possible.
- the uppermost cassette frame 20 comprises two sides and a front, all of equal height, providing three sides of a rectangle. If necessary, further joining members may be provided to ensure rigidity, but this may be provided by the journalling to the sides of the plate cylinder 3 so that its lower extremity is substantially level with the bottom of the sides.
- the back of the cassette frame is left open to permit contact between the plate cylinder 3 and the paper transport cylinder 5 when the front of the cassette frame is flush with the front of the basic framework, Figure 6, and the horizontal position of journalling of the cylinder 3 is selected accordingly.
- the construction' is such that the anilox cylinder 8 contacts both the meter cylinder 7 and the plate cylinder 3.
- the basic framework may be provided with means for adjusting the relative height of at least one cassette frame, to adjust contact between the cylinders, and/or to facilitate insertion of removal of individual cassettes, for example.
- the vertical position of the bar support 25 is adjustable by a cam arrangement operated by rotatable levers 27, so to adjust frames 18 and 19 together, following they are locked in place by operation of levers 28 of a locking arrangement.
- Lowest cassette 18 fixed.
- the contact pressure between the plate cylinder and both the anilox cylinder and the paper transport cylinder can be critical, and to this end the upper cassette can be adjusted relative to the framework both vertically and also horizontally, by any suitable means known per se.
- such adjustments are each performed by a respective cam arrangement comprising an eccentric acting against the framework (Figure 5 shows part of 29 of such an arrangement for the horizontal adjustment.
- the other cam arrangement may act vertically directly on the frame 20, but preferably and more conveniently on the slide 24).
- this arrangement provides an assembly which is sealed against egress of printing medium (or ingress of other material), apart from necessary apertures, where it matters, viz. in the vicinity of the cylinders 7 and 8.
- Necessary apertures include those for operation, and for making adjustments.
- top covering for cassette 20 which will require access for changing the printing plate. This can be effected either by providing an openable lid to the cassette, or by providing a cassette with an open top which is effectively closed by a lid, preferably hinged, mounted to the skeleton framework, in a similar manner to the lid 13 of Figure 3.
- Each rotatable mounting of the cylinders preferably comprises a seal or seals to prevent egress of printing medium or other material
- gearing 23 for drive purposes, and this may be provided externally of the respective cassette frame on the cylinder shaft, either exposed, or shielded as far as possible, i.e. merely allowing operative contact with adjacent gearing or other drive means. As shown, the gearing remains within the basic framework adjacent a side 16.
- the skeleton framework is adapted for horizontally slidably receiving the cassettes so that the roll cylinders are in correct register.
- a lid panel arranged much as the lid panel 13 is shown in Figure 3 may be raised to enable lifting of the cassette containing the print cylinder.
- This arrangement also facilitates replacement of worn roll cylinders when necessary or the replacement of roll cylinders upon changing jobs, for example to alter the hardness of an anilox roll cylinder.
- withdrawn roll cylinders could be cleaned and re-inserted.
- a second framework may be provided, preferably having two continuous side panels, continuous top and bottom plates, and a continuous back, and means for slidably receiving cassette frames inserted from the front.
- Means may be provided for sealing any of the front of such a framework for ensuring that the front is substantially closed if not wholly occupied by cassette frame front, for example dummy cassette frame fronts. In this manner, a cylinder which has already been used for a particular job may be safely stored without cleaning, for re-use on a similar job in the future.
Landscapes
- Inking, Control Or Cleaning Of Printing Machines (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB0007462A GB2344071B (en) | 1997-12-05 | 1998-12-03 | Rotary short inker |
AU13445/99A AU1344599A (en) | 1997-12-05 | 1998-12-03 | Rotary short inker |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB9725733.1 | 1997-12-05 | ||
GBGB9725733.1A GB9725733D0 (en) | 1997-12-05 | 1997-12-05 | Rotary short inker |
GB9813512A GB2332393B (en) | 1997-12-05 | 1998-06-24 | Rotary short inker |
GB9813512.2 | 1998-06-24 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1999029510A1 true WO1999029510A1 (en) | 1999-06-17 |
Family
ID=26312719
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/GB1998/003600 WO1999029510A1 (en) | 1997-12-05 | 1998-12-03 | Rotary short inker |
Country Status (3)
Country | Link |
---|---|
AU (1) | AU1344599A (en) |
GB (2) | GB2332393B (en) |
WO (1) | WO1999029510A1 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6520082B1 (en) | 2000-07-06 | 2003-02-18 | Delaware Capital Formation, Inc. | Removable ink cassette for a printing press |
CN103934169B (en) * | 2014-05-13 | 2016-01-06 | 常州市武进广宇花辊机械有限公司 | A kind of gluing printing machine scraper mechanism |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2310788A (en) * | 1938-01-18 | 1943-02-09 | Hummelchen Wilhelm | Means for inking printing forms |
US2381712A (en) * | 1943-04-29 | 1945-08-07 | Babicz George | Device for regulating pressure in machine rollers |
US3559572A (en) * | 1969-05-14 | 1971-02-02 | Us Plywood Champ Papers Inc | Method of inking a printing roll using a metering roll and revolving doctor rod |
GB1304449A (en) * | 1970-02-25 | 1973-01-24 | ||
FR2147403A5 (en) * | 1971-07-26 | 1973-03-09 | Pamarco Inc | |
DE3428073A1 (en) * | 1984-07-30 | 1986-01-30 | Bertold Dipl.-Ing. 5503 Konz Hein | Short inking unit with toothed doctor for letter press and litho printing |
EP0456383A1 (en) * | 1990-04-25 | 1991-11-13 | F.L. Smithe Machine Company Inc. | A rotary printer for an envelope machine |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4007682A (en) * | 1974-04-24 | 1977-02-15 | Xerox Corporation | Reverse angle mounted ink-splitting doctor blade |
DE2851606A1 (en) * | 1978-11-29 | 1980-06-04 | Heidelberger Druckmasch Ag | INKBOX IN THE INKING UNIT OF ROTARY PRINTING MACHINES |
FR2663588B1 (en) * | 1990-06-21 | 1992-10-09 | Marinoni Harris Sa | FILM WETTING SYSTEM FOR ROTARY OFFSET PRESS. |
JPH05229101A (en) * | 1992-02-20 | 1993-09-07 | Manabu Fukuda | Inking device |
-
1998
- 1998-06-24 GB GB9813512A patent/GB2332393B/en not_active Expired - Fee Related
- 1998-12-03 GB GB0007462A patent/GB2344071B/en not_active Expired - Fee Related
- 1998-12-03 WO PCT/GB1998/003600 patent/WO1999029510A1/en active Application Filing
- 1998-12-03 AU AU13445/99A patent/AU1344599A/en not_active Abandoned
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2310788A (en) * | 1938-01-18 | 1943-02-09 | Hummelchen Wilhelm | Means for inking printing forms |
US2381712A (en) * | 1943-04-29 | 1945-08-07 | Babicz George | Device for regulating pressure in machine rollers |
US3559572A (en) * | 1969-05-14 | 1971-02-02 | Us Plywood Champ Papers Inc | Method of inking a printing roll using a metering roll and revolving doctor rod |
GB1304449A (en) * | 1970-02-25 | 1973-01-24 | ||
FR2147403A5 (en) * | 1971-07-26 | 1973-03-09 | Pamarco Inc | |
DE3428073A1 (en) * | 1984-07-30 | 1986-01-30 | Bertold Dipl.-Ing. 5503 Konz Hein | Short inking unit with toothed doctor for letter press and litho printing |
EP0456383A1 (en) * | 1990-04-25 | 1991-11-13 | F.L. Smithe Machine Company Inc. | A rotary printer for an envelope machine |
Also Published As
Publication number | Publication date |
---|---|
GB2332393B (en) | 2000-09-20 |
GB2344071A (en) | 2000-05-31 |
GB9813512D0 (en) | 1998-08-19 |
GB2344071B (en) | 2000-09-20 |
GB2332393A (en) | 1999-06-23 |
AU1344599A (en) | 1999-06-28 |
GB0007462D0 (en) | 2000-05-17 |
GB2332393A9 (en) |
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