CA2157953C - Carrying sleeve for printing and transfer forms and a process for production of such a carrying sleeve - Google Patents
Carrying sleeve for printing and transfer forms and a process for production of such a carrying sleeve Download PDFInfo
- Publication number
- CA2157953C CA2157953C CA002157953A CA2157953A CA2157953C CA 2157953 C CA2157953 C CA 2157953C CA 002157953 A CA002157953 A CA 002157953A CA 2157953 A CA2157953 A CA 2157953A CA 2157953 C CA2157953 C CA 2157953C
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- Prior art keywords
- base plate
- printing
- sleeve
- edges
- crown
- Prior art date
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- Expired - Fee Related
Links
- 238000007639 printing Methods 0.000 title claims abstract description 51
- 238000000034 method Methods 0.000 title claims description 24
- 238000004519 manufacturing process Methods 0.000 title description 7
- 229910052751 metal Inorganic materials 0.000 claims description 22
- 239000002184 metal Substances 0.000 claims description 22
- 238000003466 welding Methods 0.000 claims description 13
- 239000000463 material Substances 0.000 claims description 10
- 229910052782 aluminium Inorganic materials 0.000 claims description 8
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 8
- 238000007645 offset printing Methods 0.000 claims description 7
- 238000005452 bending Methods 0.000 claims description 6
- 238000005520 cutting process Methods 0.000 claims description 6
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 4
- 229910052802 copper Inorganic materials 0.000 claims description 4
- 239000010949 copper Substances 0.000 claims description 4
- 229910000881 Cu alloy Inorganic materials 0.000 claims description 3
- 239000011248 coating agent Substances 0.000 claims description 3
- 238000000576 coating method Methods 0.000 claims description 3
- 239000000945 filler Substances 0.000 claims description 3
- 238000007646 gravure printing Methods 0.000 claims description 3
- 230000001681 protective effect Effects 0.000 claims description 3
- 238000007743 anodising Methods 0.000 claims description 2
- 239000000919 ceramic Substances 0.000 claims description 2
- 238000010073 coating (rubber) Methods 0.000 claims description 2
- 238000007788 roughening Methods 0.000 claims 1
- 239000007769 metal material Substances 0.000 abstract description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 12
- 229910000831 Steel Inorganic materials 0.000 description 6
- 229910052759 nickel Inorganic materials 0.000 description 6
- 239000010959 steel Substances 0.000 description 6
- 239000004918 carbon fiber reinforced polymer Substances 0.000 description 5
- 239000011152 fibreglass Substances 0.000 description 5
- 229910001369 Brass Inorganic materials 0.000 description 3
- 239000010951 brass Substances 0.000 description 3
- 229910010293 ceramic material Inorganic materials 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000009499 grossing Methods 0.000 description 1
- 238000007644 letterpress printing Methods 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41N—PRINTING PLATES OR FOILS; MATERIALS FOR SURFACES USED IN PRINTING MACHINES FOR PRINTING, INKING, DAMPING, OR THE LIKE; PREPARING SUCH SURFACES FOR USE AND CONSERVING THEM
- B41N6/00—Mounting boards; Sleeves Make-ready devices, e.g. underlays, overlays; Attaching by chemical means, e.g. vulcanising
Landscapes
- Printing Plates And Materials Therefor (AREA)
- Registering, Tensioning, Guiding Webs, And Rollers Therefor (AREA)
Abstract
A carrying sleeve, for printing and transfer forms of a metal material, the initial form of which is a rectangular thin-walled flat sheet. The sheet is bent into the desired hollow cylindrical form and the edges of the flat sheet which point toward one another are permanently connected together. The sleeve surface is processed in order to form a homogeneous continuous outer surface, so that continuous printing can be carried out.
Description
-- 21~79~
A CARRYING SLEEVE FOR PRlN lNG AND TRANSFBR FORMS AND
A PROCESS FOR PRODUCTION OF SUCH A CARRYING SLEEVE
Techn;c~l Field The invention relates to a metal carrying sleeve for printing and transfer forms. The initial form of the sleeve is a rectangular, thin-walled flat sheet, which is shaped by bending into the desired hollow cylindrical form, and the edges of the flat sheet which point toward one another are connected permanently together.
Background Art It is known today from flexographic printing to place sleeve-type printing and transfer forms on galvanically-produced nickel sleeves. Printing and transfer forms produced in this manner can be slipped by means of pressurized air over a printing cylinder core in the known manner and affixed thereto by shutting off the air supply. Carrying sleeves of fiberglass-reinforced plastic and even of carbon-fiber-reinforced plastic are also used for this purpose. However, it is relatively expensive to use materials such as nickel and fiberglass-reinforced plastic or even carbon-fiber-reinforced plastic for producing carrying sleeves.
German Patent Application P 41 40 768 discloses a sleeve-type offset printing form produced from a rectangularly-cut metal plate, wherein the edges of the plate pointing toward one another are connected by a welded seam. The carrying sleeve produced in this manner is coated and exposed on all sides except for the welded seam.
DE 42 17 793 Cl discloses a sleeve-type offset rubber blanket that is also produced from a cut base plate, to which, while it is flat, a rubber coat is applied, and wherein the beginning and the end of the base plate, along with the rubber coat, are welded together.
Using these sleeve-type printing and transfer forms, it is possible to print in a channel-free fashion, but not continuously, i.e., only finite printing products can be produced. Until now, the use of a continuous offset printing form has not become known.
Summary of Invention Accordingly, it is an object of the present invention is to provide relatively economical carrying sleeves for printing forms and transfer forms, with which continuous printing is possible.
Pursuant to this object, and others which will become apparent hereafter, one aspect of the present invention resides in a metal carrying sleeve for printing and transfer forms, the initial form of which is a rectangular, thin-walled flat sheet. The sheet is bent into the desired hollow cylindrical form and the edges which point toward one another are permanently connected together. The sleeve surface is processed in order to form a homogeneous outer surface so that continuous printing can be carried out. This represents an advantageous alternative to nickel, fiberglass-reinforced plastic and carbon-fiber-reinforced plastic sleeves from both ecological and economic points of view and, in addition, can be used universally for various printing methods.
The production costs for a welded precision sleeve processed according to the invention are many times lower than the production costs for galvanized nickel sleeves or coiled carrying sleeves of fiberglass-reinforced plastic or carbon-fiber-reinforced plastic, - 21~ 3 - 3 -especially since it is becoming increasingly difficult to produce nickel sleeves galvanically, because this production method is accompanied by heavy environmental pollution.
Furthermore, in an additional embodiment of the invention, the carrying sleeves are produced from aluminum, steel, high-quality steel, copper or brass, depending on the particular intended use.
In another embodiment of the invention, the entire sleeve surface, including the connecting seam which connects together the edges of the sheet, is chemically roughened, anodized and provided with a final photosensitive coat so that the entire sleeve surface can be used for offset printing. In still a further embodiment of the invention the entire surface of the sleeve, including the connecting seam, is provided with a water conducting coat. This also permits the entire sleeve surface to be used for offset printing.
For use in gravure printing, the entire sleeve surface, including the coating seam, is provided with an engraved copper coat.
In yet a further embodiment of the invention the entire sleeve surface, including the connecting seam, is covered with an endless rubber coat. This arrangement is suitable for use with a transfer form.
In still another embodiment of the invention the carrying sleeve is configured so that it can be used directly as a carrying sleeve of a flexible printing form for flexographic printing.
It is yet another object of the present invention to 215795~ - 4 -provide a process for producing the above discussed carrying sleeve for printing and transfer forms.
Pursuant to this object, the inventive process includes cutting a base plate corresponding in size to the circumference and breadth of the printing cylinder from thin-walled sheet metal drawn from a roll. Next the base plate is bent into the desired cylindrical form and the edges thereof which are directed toward one another are connected permanently together by a welded seam. The welding is carried out so that a crown is created on the external surface. The entire sleeve surface is processed in order to form a homogeneous, continuous circumferential surface and during this processing the crown is fit into the homogeneous surface.
It is possible to attain the crown of the welded seam in a number of ways. A first possibility is that filler materials can be welded in. In another embodiment the crown is achieved by targeted protective gas feeds. Yet another embodiment of the invention provides the crown by deposit welding which follows the actual welding together of the edges of the plate.
Pursuant to another embodiment of the inventive process, the entire sleeve surface is processed in order to obtain a homogeneous, continuous outer surface. This processing includes chemically roughing and anodizing the hollow cylindrical form of the base plate and subsequently providing the external surface with a photosensitive coating which creates a printing form sleeve suitable for continuous printing. It is desirable to use aluminum as the base plate material.
In yet a further embodiment of the inventive process a metal coat is applied to the processed external - 2157~5~ - 5 -surface of the hollow cylindrical form and this metal coat is then mechanically processed. For this it is desirable to use a copper alloy as the metal coat.
Still another embodiment of the inventive process includes applying an endless rubber coating to the entire processed sleeve surface.
Furthermore, it is possible to apply an endless ceramic coat to the entire processed sleeve surface.
Brief Description of Drawings The invention, its operating advantages, and specific objects attained by its use will be better understood by way of the following detailed description of preferred embodiments with references to the appended drawings in which:
Figure 1 is a schematic illustration of a metal carrying sleeve pursuant to the present invention;
Figure 2 illustrates a process of welding the tube seam; and Figure 3 is a cross-section through the weld seam.
Description of Preferred Embodiments Figure 1 shows, in highly schematic fashion, an embodiment of a carrying sleeve 1 of a metal material, which may be aluminum, steel, high-quality steel or brass. The initial form is a rectangular, thin-walled flat sheet, which is bent into the desired hollow cylindrical form. Preferably, the edges of the flat sheet pointing toward one another are permanently connected to one another by means of a welded seam 2.
Figure 2 shows possible ways of producing the carrying 7 5 ~ 3 - 6 -sleeve 1 in a quasi-continuous fashion, as is currently known by those in the tube welding art. The welding process itself is carried out by a laser beam.
The precision sheets of aluminum, steel, high-quality steel, copper or brass preferably have a wall thickness s of 0.1 to 0.6 mm. The carrying sleeves may also be produced by means of the welding device known from published German patent application DE
43 11 078.
The external surface of the welded carrying sleeve 1 is then processed to create a homogeneous, continuous outer surface. To carry out this surface processing, it is possible to use known production methods for smoothing a metal surface, such as turning, polishing or the like. In selecting the initial wall thickness of the thin-walled flat sheet, it is necessary to take into account the material that will be removed from the external surface of the welded carrying sleeve during processing.
As shown in Figure 3, an especially advantageous embodiment of the welded seam provides a crown 3 on the external surface of the sleeve 1. This crown 3 is then processed in a subsequent process step so that a continuous, endless outer surface is created on the carrying sleeve surface, without any removal of material from the precision metal sheet being necessary or, at least, with only minimal material removal being necessary.
The crown 3 is attained by welding filler materials, for example, wire or powder, by targeted protective gas feeds, or by deposit welding following the actual welding of the plate edges.
For use in offset printing as the carrying sleeve 1 - 2 1 ~ ~ 95 3 - 7 ~
for a printing form, the entire sleeve surface, including the connecting seam, in the present case a welded seam 2, is subsequently chemically roughened, anodized and provided with a final photosensitive coat, as is already known from the process steps during printing plate production. In respect to technical printing characteristics, this printing form sleeve is identical to conventional printing plates, except that this printing form sleeve permits continuous printing Preferably, aluminum sheets are used here.
However, it is also possible to apply a water-conducting coat to an aluminum sleeve or another metal sleeve, when the sleeve material itself is not water-conducting but is to be made water-conducting.
Ceramic materials, for example, may be applied as water-conducting coats by means of thermal spray processes.
For letterpress printing, especially for flexographic printing, the welded precision sleeve 1, the surface of which is processed as described above, may also be used directly as the carrier of a flexible printing form, rubber stereo or engraved rubber printing form and thus replace the known nickel, fiberglass-reinforced plastic and carbon-fiber-reinforced plastic sleeves.
For use in gravure printing, a metal coat, preferably a copper alloy, is galvanized or sprayed all around on the welded carrying sleeve, the surface of which has been processed as described above, and the metal coat itself is then engraved in a subsequent work step.
However, plastic coats may also be applied, which also are engraved upon.
215~9~3 - 8 -For use in offset printing as a carrying sleeve 1 for a transfer form, the entire processed surface of the sleeve, including the connecting seam 2, is covered by a continuous rubber coat, so that these rubber blanket sleeves are identical to conventional rubber blankets in respect to technical printing characteristicsi however, these rubber blanket sleeves make it possible to carry out continuous printing.
The type of rubber coat depends on the particular printing method and is not dependent on the material of the carrying sleeves.
The invention is not limited by the embodiments described above which are presented as examples only but can be modified in various ways within the scope of protection defined by the appended patent claims.
A CARRYING SLEEVE FOR PRlN lNG AND TRANSFBR FORMS AND
A PROCESS FOR PRODUCTION OF SUCH A CARRYING SLEEVE
Techn;c~l Field The invention relates to a metal carrying sleeve for printing and transfer forms. The initial form of the sleeve is a rectangular, thin-walled flat sheet, which is shaped by bending into the desired hollow cylindrical form, and the edges of the flat sheet which point toward one another are connected permanently together.
Background Art It is known today from flexographic printing to place sleeve-type printing and transfer forms on galvanically-produced nickel sleeves. Printing and transfer forms produced in this manner can be slipped by means of pressurized air over a printing cylinder core in the known manner and affixed thereto by shutting off the air supply. Carrying sleeves of fiberglass-reinforced plastic and even of carbon-fiber-reinforced plastic are also used for this purpose. However, it is relatively expensive to use materials such as nickel and fiberglass-reinforced plastic or even carbon-fiber-reinforced plastic for producing carrying sleeves.
German Patent Application P 41 40 768 discloses a sleeve-type offset printing form produced from a rectangularly-cut metal plate, wherein the edges of the plate pointing toward one another are connected by a welded seam. The carrying sleeve produced in this manner is coated and exposed on all sides except for the welded seam.
DE 42 17 793 Cl discloses a sleeve-type offset rubber blanket that is also produced from a cut base plate, to which, while it is flat, a rubber coat is applied, and wherein the beginning and the end of the base plate, along with the rubber coat, are welded together.
Using these sleeve-type printing and transfer forms, it is possible to print in a channel-free fashion, but not continuously, i.e., only finite printing products can be produced. Until now, the use of a continuous offset printing form has not become known.
Summary of Invention Accordingly, it is an object of the present invention is to provide relatively economical carrying sleeves for printing forms and transfer forms, with which continuous printing is possible.
Pursuant to this object, and others which will become apparent hereafter, one aspect of the present invention resides in a metal carrying sleeve for printing and transfer forms, the initial form of which is a rectangular, thin-walled flat sheet. The sheet is bent into the desired hollow cylindrical form and the edges which point toward one another are permanently connected together. The sleeve surface is processed in order to form a homogeneous outer surface so that continuous printing can be carried out. This represents an advantageous alternative to nickel, fiberglass-reinforced plastic and carbon-fiber-reinforced plastic sleeves from both ecological and economic points of view and, in addition, can be used universally for various printing methods.
The production costs for a welded precision sleeve processed according to the invention are many times lower than the production costs for galvanized nickel sleeves or coiled carrying sleeves of fiberglass-reinforced plastic or carbon-fiber-reinforced plastic, - 21~ 3 - 3 -especially since it is becoming increasingly difficult to produce nickel sleeves galvanically, because this production method is accompanied by heavy environmental pollution.
Furthermore, in an additional embodiment of the invention, the carrying sleeves are produced from aluminum, steel, high-quality steel, copper or brass, depending on the particular intended use.
In another embodiment of the invention, the entire sleeve surface, including the connecting seam which connects together the edges of the sheet, is chemically roughened, anodized and provided with a final photosensitive coat so that the entire sleeve surface can be used for offset printing. In still a further embodiment of the invention the entire surface of the sleeve, including the connecting seam, is provided with a water conducting coat. This also permits the entire sleeve surface to be used for offset printing.
For use in gravure printing, the entire sleeve surface, including the coating seam, is provided with an engraved copper coat.
In yet a further embodiment of the invention the entire sleeve surface, including the connecting seam, is covered with an endless rubber coat. This arrangement is suitable for use with a transfer form.
In still another embodiment of the invention the carrying sleeve is configured so that it can be used directly as a carrying sleeve of a flexible printing form for flexographic printing.
It is yet another object of the present invention to 215795~ - 4 -provide a process for producing the above discussed carrying sleeve for printing and transfer forms.
Pursuant to this object, the inventive process includes cutting a base plate corresponding in size to the circumference and breadth of the printing cylinder from thin-walled sheet metal drawn from a roll. Next the base plate is bent into the desired cylindrical form and the edges thereof which are directed toward one another are connected permanently together by a welded seam. The welding is carried out so that a crown is created on the external surface. The entire sleeve surface is processed in order to form a homogeneous, continuous circumferential surface and during this processing the crown is fit into the homogeneous surface.
It is possible to attain the crown of the welded seam in a number of ways. A first possibility is that filler materials can be welded in. In another embodiment the crown is achieved by targeted protective gas feeds. Yet another embodiment of the invention provides the crown by deposit welding which follows the actual welding together of the edges of the plate.
Pursuant to another embodiment of the inventive process, the entire sleeve surface is processed in order to obtain a homogeneous, continuous outer surface. This processing includes chemically roughing and anodizing the hollow cylindrical form of the base plate and subsequently providing the external surface with a photosensitive coating which creates a printing form sleeve suitable for continuous printing. It is desirable to use aluminum as the base plate material.
In yet a further embodiment of the inventive process a metal coat is applied to the processed external - 2157~5~ - 5 -surface of the hollow cylindrical form and this metal coat is then mechanically processed. For this it is desirable to use a copper alloy as the metal coat.
Still another embodiment of the inventive process includes applying an endless rubber coating to the entire processed sleeve surface.
Furthermore, it is possible to apply an endless ceramic coat to the entire processed sleeve surface.
Brief Description of Drawings The invention, its operating advantages, and specific objects attained by its use will be better understood by way of the following detailed description of preferred embodiments with references to the appended drawings in which:
Figure 1 is a schematic illustration of a metal carrying sleeve pursuant to the present invention;
Figure 2 illustrates a process of welding the tube seam; and Figure 3 is a cross-section through the weld seam.
Description of Preferred Embodiments Figure 1 shows, in highly schematic fashion, an embodiment of a carrying sleeve 1 of a metal material, which may be aluminum, steel, high-quality steel or brass. The initial form is a rectangular, thin-walled flat sheet, which is bent into the desired hollow cylindrical form. Preferably, the edges of the flat sheet pointing toward one another are permanently connected to one another by means of a welded seam 2.
Figure 2 shows possible ways of producing the carrying 7 5 ~ 3 - 6 -sleeve 1 in a quasi-continuous fashion, as is currently known by those in the tube welding art. The welding process itself is carried out by a laser beam.
The precision sheets of aluminum, steel, high-quality steel, copper or brass preferably have a wall thickness s of 0.1 to 0.6 mm. The carrying sleeves may also be produced by means of the welding device known from published German patent application DE
43 11 078.
The external surface of the welded carrying sleeve 1 is then processed to create a homogeneous, continuous outer surface. To carry out this surface processing, it is possible to use known production methods for smoothing a metal surface, such as turning, polishing or the like. In selecting the initial wall thickness of the thin-walled flat sheet, it is necessary to take into account the material that will be removed from the external surface of the welded carrying sleeve during processing.
As shown in Figure 3, an especially advantageous embodiment of the welded seam provides a crown 3 on the external surface of the sleeve 1. This crown 3 is then processed in a subsequent process step so that a continuous, endless outer surface is created on the carrying sleeve surface, without any removal of material from the precision metal sheet being necessary or, at least, with only minimal material removal being necessary.
The crown 3 is attained by welding filler materials, for example, wire or powder, by targeted protective gas feeds, or by deposit welding following the actual welding of the plate edges.
For use in offset printing as the carrying sleeve 1 - 2 1 ~ ~ 95 3 - 7 ~
for a printing form, the entire sleeve surface, including the connecting seam, in the present case a welded seam 2, is subsequently chemically roughened, anodized and provided with a final photosensitive coat, as is already known from the process steps during printing plate production. In respect to technical printing characteristics, this printing form sleeve is identical to conventional printing plates, except that this printing form sleeve permits continuous printing Preferably, aluminum sheets are used here.
However, it is also possible to apply a water-conducting coat to an aluminum sleeve or another metal sleeve, when the sleeve material itself is not water-conducting but is to be made water-conducting.
Ceramic materials, for example, may be applied as water-conducting coats by means of thermal spray processes.
For letterpress printing, especially for flexographic printing, the welded precision sleeve 1, the surface of which is processed as described above, may also be used directly as the carrier of a flexible printing form, rubber stereo or engraved rubber printing form and thus replace the known nickel, fiberglass-reinforced plastic and carbon-fiber-reinforced plastic sleeves.
For use in gravure printing, a metal coat, preferably a copper alloy, is galvanized or sprayed all around on the welded carrying sleeve, the surface of which has been processed as described above, and the metal coat itself is then engraved in a subsequent work step.
However, plastic coats may also be applied, which also are engraved upon.
215~9~3 - 8 -For use in offset printing as a carrying sleeve 1 for a transfer form, the entire processed surface of the sleeve, including the connecting seam 2, is covered by a continuous rubber coat, so that these rubber blanket sleeves are identical to conventional rubber blankets in respect to technical printing characteristicsi however, these rubber blanket sleeves make it possible to carry out continuous printing.
The type of rubber coat depends on the particular printing method and is not dependent on the material of the carrying sleeves.
The invention is not limited by the embodiments described above which are presented as examples only but can be modified in various ways within the scope of protection defined by the appended patent claims.
Claims (17)
1. A metal carrying sleeve for printing and transferforms, the carrying sleeve comprising a rectangular, thin-walled flat sheet, that is bent to a to a desired hollow cylindrical form so that two edges of the flat sheet face one another; a seam that permanently connects together the facing edges of the sheet; and a homogeneous, continuous and outer circumferential surface formed by processing the surface so that continuous printing is possible.
2. A carrying sleeve as defined in claim 1, herein the thin-walled flat sheet is made of aluminum.
3. A carrying sleeve as defined in claim 1, wherein the circumferential surface, including the seam, is chemically roughened and anodized, and further comprising a photosensitive coat on the roughened and anodized surface.
4. A carrying sleeve as defined in claim 1 and further comprising a water-conducting coat on the outer surface, including the seam.
5. A carrying sleeve as defined in claim 1, and further comprising an engraved copper coat on the entire outer surface, including the seam.
6. A carrying sleeve as defined in claim 1, and further comprising an endless rubber coat that covers the entire outer surface, including the seam.
7. A carrying sleeve as defined in claim 1, wherein the carrying sleeve is configured to directly carry a flexible printing form for flexographic printing.
8. A process for producing a carrying sleeve for printing and transfer forms, comprising the steps of:
cutting a base plate from thin-walled sheet metal drawn from a roll and in a flat state to a size corresponding to a circumference and breadth of a printing cylinder;
bending the base plate into a desired cylindrical form so that two edges of the base plate face one another;
permanently connecting together the two edges of the base plate with a welded seam that has an outwardly directed crown; and processing the entire sleeve surface, including the crown, to form a homogeneous, continuous outer surface.
cutting a base plate from thin-walled sheet metal drawn from a roll and in a flat state to a size corresponding to a circumference and breadth of a printing cylinder;
bending the base plate into a desired cylindrical form so that two edges of the base plate face one another;
permanently connecting together the two edges of the base plate with a welded seam that has an outwardly directed crown; and processing the entire sleeve surface, including the crown, to form a homogeneous, continuous outer surface.
9. A process as defined in claim 8, wherein the step of connecting together the edges of the base plate includes forming the crown with welding filler materials.
10. A process as defined in claim 8, wherein the step of permanently connecting the base plate edges includes forming the crown using targeted protective gas feeds.
11. A process as defined in claim 8, wherein the step of permanently connecting base plate edges includes forming the crown by deposit welding following an initial welding of the base plate edges.
12. A process for producing an offset printing form, comprising the steps of:
producing a carrying sleeve for printing and transfer forms by cutting a base plate from thin-walled sheet metal drawn from a roll and in a flat state to a size corresponding to a circumference and breadth of a printing cylinder;
bending the base plate into a desired cylindrical form so that two edges of the base plate face one another;
permanently connecting together the two edges of the base plate with a welded seam that has an outwardly directed crown, and processing the entire sleeve surface, including the crown, to form a homogeneous, continuous outer surface, the processing step including chemically roughening and anodizing the hollow cylindrical form of the base plate and subsequently providing a photosensitive coating on the outer surface of the cylindrical form so as to create a printing form sleeve for continuous printing.
producing a carrying sleeve for printing and transfer forms by cutting a base plate from thin-walled sheet metal drawn from a roll and in a flat state to a size corresponding to a circumference and breadth of a printing cylinder;
bending the base plate into a desired cylindrical form so that two edges of the base plate face one another;
permanently connecting together the two edges of the base plate with a welded seam that has an outwardly directed crown, and processing the entire sleeve surface, including the crown, to form a homogeneous, continuous outer surface, the processing step including chemically roughening and anodizing the hollow cylindrical form of the base plate and subsequently providing a photosensitive coating on the outer surface of the cylindrical form so as to create a printing form sleeve for continuous printing.
13. A process as defined in claim 12, wherein the base plate is made of aluminum.
14. A process for producing a gravure printing form, comprising the steps of:
producing a carrying sleeve for printing and transfer forms, by cutting a base plate from thin-walled sheet metal drawn from a roll and in a flat state to a size corresponding to a circumference and breadth of a printing cylinder, bending the base plate into a desired cylindrical form so that two edges of the base plate face one another, permanently connecting together the two edges of the base plate with a welded seam that has an outwardly directed crown, processing the entire sleeve surface, including the crown, to form a homogeneous, continuous outer surface; and applying a metal coat to the processed outer surface and then mechanically processing the metal coat.
producing a carrying sleeve for printing and transfer forms, by cutting a base plate from thin-walled sheet metal drawn from a roll and in a flat state to a size corresponding to a circumference and breadth of a printing cylinder, bending the base plate into a desired cylindrical form so that two edges of the base plate face one another, permanently connecting together the two edges of the base plate with a welded seam that has an outwardly directed crown, processing the entire sleeve surface, including the crown, to form a homogeneous, continuous outer surface; and applying a metal coat to the processed outer surface and then mechanically processing the metal coat.
15. A process as defined in claim 14, wherein the step of applying a metal coat includes applying a copper alloy to the outer surface of the cylindrical form.
16. A process for producing a transfer form, comprising the steps of:
producing a carrying sleeve for printing and transfer forms by cutting a base plate from thin-walled sheet metal drawn from a roll and in a flat state to a size corresponding to a circumference and breadth of a printing cylinder, bending the base plate into a desired cylindrical form so that two edges of the base plate face one another, permanently connecting together the two edges of the base plate with a welded seam that has an outwardly directed crown, and processing the entire sleeve surface, including the crown, to form a homogeneous, continuous outer surface;
and applying an endless rubber coating to the entire processed sleeve surface.
producing a carrying sleeve for printing and transfer forms by cutting a base plate from thin-walled sheet metal drawn from a roll and in a flat state to a size corresponding to a circumference and breadth of a printing cylinder, bending the base plate into a desired cylindrical form so that two edges of the base plate face one another, permanently connecting together the two edges of the base plate with a welded seam that has an outwardly directed crown, and processing the entire sleeve surface, including the crown, to form a homogeneous, continuous outer surface;
and applying an endless rubber coating to the entire processed sleeve surface.
17. A process for producing a printing form, comprising the steps of:
producing a carrying sleeve for printing and transfer forms by cutting a base plate from thin-walled sheet metal drawn from a roll and in a flat state to a size corresponding to a circumference and breadth of a printing cylinder, bending the base plate into a desired cylindrical form so that two edges of the base plate face one another, permanently connecting together the two edges of the base plate with a welded seam that has an outwardly directed crown, and processing the entire sleeve surface, including the crown, to form a homogeneous, continuous outer surface;
and applying an endless ceramic coat to the entire processed sleeve surface.
producing a carrying sleeve for printing and transfer forms by cutting a base plate from thin-walled sheet metal drawn from a roll and in a flat state to a size corresponding to a circumference and breadth of a printing cylinder, bending the base plate into a desired cylindrical form so that two edges of the base plate face one another, permanently connecting together the two edges of the base plate with a welded seam that has an outwardly directed crown, and processing the entire sleeve surface, including the crown, to form a homogeneous, continuous outer surface;
and applying an endless ceramic coat to the entire processed sleeve surface.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEP4432814.1 | 1994-09-15 | ||
| DE4432814A DE4432814A1 (en) | 1994-09-15 | 1994-09-15 | Carrier sleeve for printing and transfer forms |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2157953A1 CA2157953A1 (en) | 1996-03-16 |
| CA2157953C true CA2157953C (en) | 2000-09-05 |
Family
ID=6528253
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002157953A Expired - Fee Related CA2157953C (en) | 1994-09-15 | 1995-09-11 | Carrying sleeve for printing and transfer forms and a process for production of such a carrying sleeve |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP0703092B1 (en) |
| JP (1) | JP2851569B2 (en) |
| CA (1) | CA2157953C (en) |
| DE (2) | DE4432814A1 (en) |
Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE29720928U1 (en) * | 1997-11-26 | 1998-02-19 | Rotec Hülsensysteme GmbH, 48683 Ahaus | Pressure sleeve with chip |
| DE19820357C1 (en) * | 1998-05-07 | 1999-10-07 | Roland Man Druckmasch | Method of welding seam in printer cylinder shell |
| DE10049283A1 (en) * | 2000-10-05 | 2002-04-11 | Hueck Folien Gmbh & Co Kg | Method and device for producing a cylindrical embossing mold |
| DE102004015248A1 (en) * | 2004-03-29 | 2005-10-13 | Goss International Montataire S.A. | Lifting sleeve for a printing cylinder of an offset printing machine |
| DE102004051262A1 (en) * | 2004-10-21 | 2006-04-27 | Man Roland Druckmaschinen Ag | Offset printing machine for printing wall paper, has picturization mechanism picturizing re-recordable and erasable offset printing form that has smooth surface, where entire surface of form has defined roughness aligned to offset printing |
| DE102005007453A1 (en) * | 2005-02-18 | 2006-08-31 | Man Roland Druckmaschinen Ag | Production of a sleeve used in digital offset printers comprises preparing a welded sleeve from a metallic material having a welding seam and coating the sleeve with a metallic alloy in the region of the welding seam |
| DE102005016679A1 (en) * | 2005-04-12 | 2006-10-19 | Man Roland Druckmaschinen Ag | Production of a sleeve used in a printing machine comprises preparing a metallic welded sleeve having a welding seam and grinding the whole outer surface of the sleeve including the seam to produce a cross-ground structure |
| DE102005052159A1 (en) | 2005-11-02 | 2007-05-03 | Man Roland Druckmaschinen Ag | Gravure printing plate sleeve, has steel girder casing whose initial shape is rectangular plate piece having wall thickness specific millimeters, where steel girder is brought to desired hollow cylinder form by bending |
| JP5242037B2 (en) * | 2006-10-13 | 2013-07-24 | 旭化成イーマテリアルズ株式会社 | Method for producing hollow cylindrical support for printing substrate |
| GB0624463D0 (en) * | 2006-12-07 | 2007-01-17 | Falcontec Ltd | Process for producing a die |
| DE102009007678B4 (en) * | 2009-02-03 | 2010-12-16 | Sächsische Walzengravur GmbH | Sleeve as a gravure mold |
| JP6461027B2 (en) * | 2016-02-26 | 2019-01-30 | 三菱重工機械システム株式会社 | Ink roller and printing machine |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR989659A (en) * | 1944-02-22 | 1951-09-12 | Dansk Dybtryk Ind Ved Marius J | Improvements in printing clichés and roll-forms, in the processes and tools for manufacturing clichés |
| DE3543704A1 (en) * | 1985-12-11 | 1987-06-19 | Md Papierfabrik Pasing Nicolau | DEVICE AND METHOD FOR PRINTING A TRAIN |
| GB2200323B (en) * | 1986-12-16 | 1991-05-01 | Tetra Pak Ab | Offset printing |
| DE4140768C2 (en) * | 1991-12-11 | 1994-08-18 | Roland Man Druckmasch | Offset printing form |
| DE4217793C1 (en) * | 1992-05-29 | 1993-12-09 | Roland Man Druckmasch | Offset blanket and process for its manufacture |
| ES2102209T3 (en) * | 1992-09-10 | 1997-07-16 | Horsell Graphic Ind Ltd | PRINTING PLATE AND MANUFACTURING METHOD. |
| DE4311078C1 (en) | 1993-04-03 | 1994-05-26 | Roland Man Druckmasch | Prodn. of casing-shaped printing forme - uses plate with pass hole system with both plate edges to be joined having retention strips |
| DE4412873C2 (en) * | 1993-05-13 | 1995-06-22 | Roland Man Druckmasch | Register device for a sleeve-shaped offset printing form |
-
1994
- 1994-09-15 DE DE4432814A patent/DE4432814A1/en not_active Withdrawn
-
1995
- 1995-09-07 DE DE59502749T patent/DE59502749D1/en not_active Expired - Lifetime
- 1995-09-07 EP EP95114034A patent/EP0703092B1/en not_active Expired - Lifetime
- 1995-09-11 CA CA002157953A patent/CA2157953C/en not_active Expired - Fee Related
- 1995-09-13 JP JP7235643A patent/JP2851569B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CA2157953A1 (en) | 1996-03-16 |
| DE4432814A1 (en) | 1996-03-28 |
| EP0703092A1 (en) | 1996-03-27 |
| DE59502749D1 (en) | 1998-08-13 |
| JP2851569B2 (en) | 1999-01-27 |
| EP0703092B1 (en) | 1998-07-08 |
| JPH0890758A (en) | 1996-04-09 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| MKLA | Lapsed |
Effective date: 20130911 |