WO2008102277A2 - Apparatus for cleaning cylinders in continuous printing machines - Google Patents
Apparatus for cleaning cylinders in continuous printing machines Download PDFInfo
- Publication number
- WO2008102277A2 WO2008102277A2 PCT/IB2008/050209 IB2008050209W WO2008102277A2 WO 2008102277 A2 WO2008102277 A2 WO 2008102277A2 IB 2008050209 W IB2008050209 W IB 2008050209W WO 2008102277 A2 WO2008102277 A2 WO 2008102277A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- roller
- strip
- rollers
- paper
- blades
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F35/00—Cleaning arrangements or devices
- B41F35/06—Cleaning arrangements or devices for offset cylinders
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41P—INDEXING SCHEME RELATING TO PRINTING, LINING MACHINES, TYPEWRITERS, AND TO STAMPS
- B41P2235/00—Cleaning
- B41P2235/10—Cleaning characterised by the methods or devices
- B41P2235/20—Wiping devices
- B41P2235/24—Wiping devices using rolls of cleaning cloth
- B41P2235/246—Pressing the cleaning cloth against the cylinder
Definitions
- the invention relates to an apparatus for cleaning cylinders in continuous printing machines, for example of the so-called reel type, equipped with rubber printing cylinders which act simultaneously on the opposite sides of a continuous strip of paper unwound from a reel.
- the invention relates to an apparatus of the type described in Italian patent application No. BO2007A-00005 in the name of the Applicant where idle low-weight rollers are provided, transversely with respect to the strip of paper, on one or both the opposite sides of the said strip and, during cooperation with the strip, force the strip itself to form a length of material and are made to rotate by the latter.
- the cleaning liquid with solvent is supplied by spraying bars into the corner or corners formed by the roller or rollers and by the strip of paper and, when passing through the large contact area between roller and strip, the solvent is distributed efficiently and adheres to the strip which passes through the apparatus in question.
- Special housing is provided in order to contain and recover the mist and solvent spray which forms during the operating cycle of the apparatus and special means are envisaged such that, when the rollers are paired and opposite each other so as to act on the opposite sides of the strip of paper, they are arranged in the manner of a bridge between the surfaces of these rollers which have just made contact with the strip, in order to close the narrow openings existing between the rollers along the sides of the said strip, in particular when the latter has a width smaller than the maximum width which can be inserted in the printing machine and in order to transfer the solvent supplied by the bars into these openings from that one of the said rollers which is situated at a greater height to the roller situated at a lower height.
- the said roller or rollers is/are provided with doctor blade means for removing and recovering the solvent which is not retained by the strip of paper and the solvent which is supplied by the bars along the sides of the said strip.
- doctor blades intended to make contact with the rollers are designed so that they may be made to perform a movement towards and away from the said rollers, so that the latter are able to start their working cycle not braked by contact with the said blades which are then moved towards the rollers only when the latter have been set in rotation by contact with the strip of paper.
- the possibility of operating the rollers by means of a rotating unit of any suitable kind may be envisaged.
- N denotes the strip of paper which, after leaving the transmission roller 5, follows for example a horizontal path in the direction of the arrow F and makes light contact tangentially with the bottom idle roller 6 of the apparatus, which is characterized by a low inertia and is supported freely rotatably by sidewalls 7, only one of which is visible in the drawings and which are fixed by means of external supports 107 to the bottom part of the fixed sidewalls 13 of the apparatus which, according to the solution shown, have at the bottom a horizontal extension 113 which is designed to support the housing 109, 109' which forms the tray 9 for collecting and removing via the bottom discharge outlet 10 the cleaning liquid spray and mist which form during the working cycle of the apparatus, when the nozzles 108 of the bottom bar 8 are activated.
- the bar in question is now fixed with its ends to the middle part of the rods 130 of fluid pressure cylinder-and-piston units 30 which are fixed with their body to supports 31 in turn fixed to bottom extensions 207 of the said sidewalls 7, the rods 130 having in turn extensions 230 which slide guided inside seats 32 formed in the said sidewalls 7, all of which so that, following simultaneous operation of the units 30, which are provided one at each end of the bar 8, this bar may be made to perform a short travel movement towards or away from the roller 6, with a displacement parallel to this roller.
- the front of the bar 8 which is directed towards the roller 6 has, fixed thereon, the middle part of a housing 33 provided with holes from which the nozzles 108 project and which has an upper section 133 which is situated at a short distance from the section of paper which travels between the transmission roller 5 and the operating roller 6 so as to collect the cleaning liquid spray which otherwise would be dispersed and which has at the bottom a short lug 233 on which the flexible doctor blade 12 is mounted, which blade, depending on the position of the bar 8, may be set back from the roller 6 as shown in the drawings or may touch this roller, with a contact pressure which may where necessary be predetermined and fixed or may be adjustable with any suitable means which limit the extension stroke of the rod of the cylinders 30.
- These adjusting means have not been shown in the drawings in that they may deduced and easily realized by persons skilled in the art.
- the bar 18 has, fixed thereon, the flexible doctor blade 112 which, depending on the position of the said bar, may be at a distance from the roller 16, as shown in the drawing, or may be close to this roller and may touch it so as to clean it, with a pressure which in this case is also fixed and predetermined or else can be adjusted by suitable means.
- the bar 18 supports the tray 29 for recovering the solvent which is collected by the said blade 112 and is discharged via the duct 129 and also supports the upper housing 317 and lower housing 417 for collecting the cleaning liquid spray which may result from rotation of the roller 16.
- the operating principle of the apparatus is simple and evident.
- the doctor blades 12 and 112 are in the retracted position as can be seen in the drawings or at a smaller distance or in light contact with the rollers, so that the latter are free to rotate as far as possible.
- the apparatus is activated in order to perform its working cycle, the upper roller 16 is lowered and pressed onto the strip of paper N which increases the contact area with the rollers 16 and 6 and is able to easily cause rotation thereof because these rollers are not braked by contact with the doctor blades 12, 112.
- the blade 19 which may be present on the upper unit makes light contact with the rollers 6 and 16, both because of the slippery and porous nature of the material which forms it, for example felt, and because this material retains the residual cleaning liquid from the previous cycle and therefore lubricates the surface of the blade 19 which makes contact with the said rollers 6, 16.
- the doctor blades 12 and 112 are brought into contact with the rollers 6 and 16 at the predetermined pressure necessary for being able to perform cleaning of these rollers and the bars 8 and 18 are activated so as to spray the cleaning liquid.
- the bars 8 and 18 interrupt the supply of the cleaning liquid and in sequence the upper blade 112 is alternately retracted and repositioned so as to favour separation of the residual drops of solvent from the roller 16 and from the blade itself, following which the same roller 16 is raised into the rest position and the associated doctor blade 112 is brought into the retracted rest position.
- the doctor blade 12 of the bottom roller 6 is retracted into the rest position and the apparatus is ready for repetition of the next working cycle.
- rollers 6 and 16 via a motor at a speed related to the feeding speed of the strip of paper N so that no significant slipping occurs between roller and strip, and this may be achieved by means of drive systems of the electromechanical or other type which for example use the analog signal of the printing machine in order to synchronize rotation of the rollers with the feeding speed of the strip of paper or by means of more simplified drive systems which are active only during the initial part of the working cycle of the apparatus, simply in order to ensure that the rollers are already rotating when they make contact with the strip of paper which then intervenes to keep the said rollers rotating.
- rotation of the said rollers may be obtained using drives which for example derive the rotation of the roller 6 or 16 from the positive rotation of the adjacent transmission roller 5 and which then transmit the rotation from the roller 6 to the roller 16, for example using rubberized friction wheels and/or using gears and using any other suitable means which may be easily deduced and realized by persons skilled in the art.
Abstract
The apparatus for cleaning cylinders in continuous printing machines comprises one or more bars with nozzles (8, 108, 18, 118) and associated supply means for spraying a suitable quantity of cleaning liquid onto one or onto both the opposite sides of a section of the strip of paper (N) which is fed to the cylinders of the printing machine. For each bar it comprises at least one respective roller (6, 16) which is situated transversely with respect to the said strip of paper and in contact with the latter so as to spread on the same strip the liquid sprayed by the said bar or bars, which comprises suitable housing for confining and for collecting the mist and the liquid spray which is produced during the working cycle of the said apparatus and which with any suitable means performs conveying away of the liquid collected towards recovery means. The apparatus comprises in association with each said roller cleaning blades (12, 112) and comprises means for immediate recovery of the liquid supplied by the said bar or bars along the sides of the strip of paper when the latter has a width smaller than the maximum width which can be used by the printing machine. The apparatus comprises means for moving the said cleaning blade or blades away from and towards the said roller or rollers (6, 16) so that, when the latter are arranged in contact with the strip of paper, the associated blade (12, 112) is in a position at a distance from the roller or in a position such that the said roller is not braked and is in an optimum condition for being able to be driven rotationally by contact with the strip of paper, there being envisaged means which in sequence bring the blade or blades into contact with suitable pressure against the said roller or rollers.
Description
TITLE:
"APPARATUS FOR CLEANING CYLINDERS IN CONTINUOUS PRINTING MACHINES"
DESCRIPTION
The invention relates to an apparatus for cleaning cylinders in continuous printing machines, for example of the so-called reel type, equipped with rubber printing cylinders which act simultaneously on the opposite sides of a continuous strip of paper unwound from a reel. In particular, the invention relates to an apparatus of the type described in Italian patent application No. BO2007A-00005 in the name of the Applicant where idle low-weight rollers are provided, transversely with respect to the strip of paper, on one or both the opposite sides of the said strip and, during cooperation with the strip, force the strip itself to form a length of material and are made to rotate by the latter. The cleaning liquid with solvent is supplied by spraying bars into the corner or corners formed by the roller or rollers and by the strip of paper and, when passing through the large contact area between roller and strip, the solvent is distributed efficiently and adheres to the strip which passes through the apparatus in question. Special housing is provided in order to contain and recover the mist and solvent spray which forms during the operating cycle of the apparatus and special means are envisaged such that, when the rollers are paired and opposite each other so as to act on the opposite sides of the strip of paper, they are arranged in the manner of a bridge between the surfaces of these rollers which have just made contact with the strip, in order to close the narrow openings existing between the rollers along the sides of the said strip, in particular when the latter has a width smaller than the maximum width which can be inserted in the printing machine and in order to transfer the solvent supplied by the bars into these openings from that one of the said rollers which is situated at a greater height to the roller situated at a lower height. The said roller or rollers is/are provided with doctor blade means for removing and recovering the solvent which is not retained by the strip of paper and the solvent which is supplied by the bars along the sides of the said strip.
During the design and operational testing of such an apparatus, it was established that rotation of the said rollers could be prevented by the doctor blade system being set too tightly against the said rollers and/or also by the start-up friction due to the fact that the rollers are initially at a standstill and must be set in rotation by contact with the advancing strip of paper. The invention intends to overcome these drawbacks with the solution as claimed in the accompanying Claim 1) and in the subsequent claims, based on the following proposed solution. The doctor blades intended to make contact with the rollers are designed so that they may be made to perform a movement towards and away from the said rollers, so that the latter are able to start their working cycle not braked by contact with the said blades which are then moved towards the rollers only when the latter have been set in rotation by contact with the strip of paper. In combination with or as an alternative to this solution, the possibility of operating the rollers by means of a rotating unit of any suitable kind may be envisaged. Further characteristic features of the invention, and the advantages arising therefrom, will become clearer from the following description of a preferred embodiment thereof, provided with reference to the sole figure of the accompanying drawings, which shows a side view of an apparatus of the type mentioned above with oppositely arranged rollers, shown with parts cross-sectioned and in the active condition where it is co-operating with the strip of paper.
In the figure of the drawings, N denotes the strip of paper which, after leaving the transmission roller 5, follows for example a horizontal path in the direction of the arrow F and makes light contact tangentially with the bottom idle roller 6 of the apparatus, which is characterized by a low inertia and is supported freely rotatably by sidewalls 7, only one of which is visible in the drawings and which are fixed by means of external supports 107 to the bottom part of the fixed sidewalls 13 of the apparatus which, according to the solution shown, have at the bottom a horizontal extension 113 which is designed to support the housing 109, 109' which forms the tray 9 for collecting and removing via the bottom discharge outlet 10 the cleaning liquid spray and mist which form during the working cycle of the apparatus, when the nozzles 108
of the bottom bar 8 are activated. The bar in question is now fixed with its ends to the middle part of the rods 130 of fluid pressure cylinder-and-piston units 30 which are fixed with their body to supports 31 in turn fixed to bottom extensions 207 of the said sidewalls 7, the rods 130 having in turn extensions 230 which slide guided inside seats 32 formed in the said sidewalls 7, all of which so that, following simultaneous operation of the units 30, which are provided one at each end of the bar 8, this bar may be made to perform a short travel movement towards or away from the roller 6, with a displacement parallel to this roller.
The front of the bar 8 which is directed towards the roller 6 has, fixed thereon, the middle part of a housing 33 provided with holes from which the nozzles 108 project and which has an upper section 133 which is situated at a short distance from the section of paper which travels between the transmission roller 5 and the operating roller 6 so as to collect the cleaning liquid spray which otherwise would be dispersed and which has at the bottom a short lug 233 on which the flexible doctor blade 12 is mounted, which blade, depending on the position of the bar 8, may be set back from the roller 6 as shown in the drawings or may touch this roller, with a contact pressure which may where necessary be predetermined and fixed or may be adjustable with any suitable means which limit the extension stroke of the rod of the cylinders 30. These adjusting means have not been shown in the drawings in that they may deduced and easily realized by persons skilled in the art.
A solution similar to that described has also been envisaged for movable operation of the doctor blade for cleaning the upper idle roller 16 of the apparatus, which is rotatably supported by movable sidewalls 15 interconnected by the cross- member 217 and pivoted at 14 with the fixed sidewalls 13 with which cylinder-and- piston units 21 are hinged at 20, the said units being hinged with their rod at 22 on the said sidewalls 15 so that by means of operation of these units 21 , the roller 16 may be raised into the rest position or may be lowered so as to co-operate with the section of strip of paper N which travels between the transmission roller 5 and the bottom roller 6 so that, as a result of this increased contact with the strip N, the rollers 6 and 16 are caused to rotate by the feeding movement of the said strip of paper in
the direction F.
Unlike the preceding solution, where the upper bar 18 with the nozzles 118 for supplying the cleaning liquid, was fixed with its ends to the sidewalls 15, the ends of this bar are now fixed to the middle part of the rods 130' of fluid pressure cylinder- and-piston units 30' which are fixed with their body to supports 31" in turn fixed at the bottom to the sidewalls 15, the said rods 130' having extensions 230' which slide guided in seats 32' formed in the said sidewalls 15. The bar 18 has, fixed thereon, the flexible doctor blade 112 which, depending on the position of the said bar, may be at a distance from the roller 16, as shown in the drawing, or may be close to this roller and may touch it so as to clean it, with a pressure which in this case is also fixed and predetermined or else can be adjusted by suitable means. Together with the doctor blade 112, the bar 18 supports the tray 29 for recovering the solvent which is collected by the said blade 112 and is discharged via the duct 129 and also supports the upper housing 317 and lower housing 417 for collecting the cleaning liquid spray which may result from rotation of the roller 16.
The operating principle of the apparatus thus modified is simple and evident. When the apparatus is in the rest position, the doctor blades 12 and 112 are in the retracted position as can be seen in the drawings or at a smaller distance or in light contact with the rollers, so that the latter are free to rotate as far as possible. When the apparatus is activated in order to perform its working cycle, the upper roller 16 is lowered and pressed onto the strip of paper N which increases the contact area with the rollers 16 and 6 and is able to easily cause rotation thereof because these rollers are not braked by contact with the doctor blades 12, 112. The blade 19 which may be present on the upper unit makes light contact with the rollers 6 and 16, both because of the slippery and porous nature of the material which forms it, for example felt, and because this material retains the residual cleaning liquid from the previous cycle and therefore lubricates the surface of the blade 19 which makes contact with the said rollers 6, 16.
In sequence, the doctor blades 12 and 112 are brought into contact with the rollers 6 and 16 at the predetermined pressure necessary for being able to perform
cleaning of these rollers and the bars 8 and 18 are activated so as to spray the cleaning liquid. Once the cycle has been completed, the bars 8 and 18 interrupt the supply of the cleaning liquid and in sequence the upper blade 112 is alternately retracted and repositioned so as to favour separation of the residual drops of solvent from the roller 16 and from the blade itself, following which the same roller 16 is raised into the rest position and the associated doctor blade 112 is brought into the retracted rest position. When the upper roller 16 has returned into the rest position, the doctor blade 12 of the bottom roller 6 is retracted into the rest position and the apparatus is ready for repetition of the next working cycle. As an alternative to or in combination with that described, it is possible to envisage driving the rollers 6 and 16 via a motor at a speed related to the feeding speed of the strip of paper N so that no significant slipping occurs between roller and strip, and this may be achieved by means of drive systems of the electromechanical or other type which for example use the analog signal of the printing machine in order to synchronize rotation of the rollers with the feeding speed of the strip of paper or by means of more simplified drive systems which are active only during the initial part of the working cycle of the apparatus, simply in order to ensure that the rollers are already rotating when they make contact with the strip of paper which then intervenes to keep the said rollers rotating. According to another constructional variant, rotation of the said rollers may be obtained using drives which for example derive the rotation of the roller 6 or 16 from the positive rotation of the adjacent transmission roller 5 and which then transmit the rotation from the roller 6 to the roller 16, for example using rubberized friction wheels and/or using gears and using any other suitable means which may be easily deduced and realized by persons skilled in the art.
Claims
1. Apparatus for cleaning cylinders in continuous printing machines, which comprises at least one or more bars with nozzles (8, 108, 18, 118) and associated supply means for spraying a suitable quantity of cleaning liquid onto one or onto both the opposite sides of a section of the strip of paper (N) which is fed to the cylinders of the printing machine and which for at least one bar comprises at least one respective roller (6, 16) which is situated transversely with respect to the said strip of paper and in contact with the latter so as to spread on the same strip the liquid sprayed by the said bar or bars, which comprises suitable housing for confining and for collecting the mist and liquid spray which is produced during the working cycle of the said apparatus and which with any suitable means performs conveying away of the liquid collected towards recovery means, which comprises cleaning blades (12, 112) in association with each said roller and which comprises means for immediate recovery of the liquid supplied by the said bar or bars along the sides of the strip of paper when the latter has a width smaller than the maximum width which can be used by the printing machine, characterized in that it comprises means for moving the said cleaning blade or blades away from or towards the said roller or rollers (6, 16) so that, when the latter are arranged in contact with the strip of paper, the associated blade (12, 112) is in a position at a distance from the roller or in a position such that the said roller is not braked and is in an optimum condition for being able to be driven rotationally by contact with the strip of paper, there being envisaged means which in sequence bring the blade or blades into contact with suitable pressure against the said roller or rollers.
2. Apparatus according to Claim 1), characterized in that it comprises means for ensuring that at the end of the working cycle of the said apparatus, when the said roller or rollers (6, 16) is/are in the rest position, the associated blade or blades (12, 112) are in synchronism moved away from the said rollers (6, 16) so that the same apparatus assumes a condition suitable for starting an ensuing working cycle.
3. Apparatus according to Claim 1 , characterized in that it comprises means for ensuring that, at the end of the working cycle, the doctor blade or blades (12, 112) of the said roller or rollers (6, 16) are alternately operated so as to move towards and away from the said rollers in order to favour separation of the residual cleaning liquid from the said rollers and the said blades.
4. Apparatus according to Claim 1), in which the said doctor blade or blades (12, 112) are fixed onto the respective bars (8, 108, 18, 118) for supplying the cleaning liquid and means are envisaged for moving these bars in a parallel manner towards or away from the rollers (6, 16), with a fixed or adjustable travel stroke so as to perform the said movement of the blades towards or away from the said rollers (6, 16).
5. Apparatus according to Claim 4), in which the bars (8, 18) also support housing parts (33, 29, 317, 417) suitable for confining the mist and liquid spray produced during operation of the said apparatus.
6. Apparatus according to Claim 4), in which the bars (8, 18) are fixed with their ends to the rods of fluid pressure cylinder-and-piston units (30, 30') which are fixed with their body to suitable supports (31 , 31') and which, with an extension (230, 230') of the said rod, slide inside special guide seats (32, 32').
7. Apparatus for cleaning cylinders in continuous printing machines, which comprises one or more bars with nozzles (8, 108, 18, 118) and associated supply means for spraying a suitable quantity of cleaning liquid onto one or onto both the opposite sides of a section of the strip of paper (N) which is fed to the cylinders of the printing machine and which for at least one bar comprises at least one roller (6, 16) which is situated transversely with respect to the said strip of paper and in contact with the latter so as to spread on the same strip the liquid sprayed by the said bars, which comprises suitable housing for confining, for collecting and for removing the mist and the liquid spray which is produced during the working cycle of the said apparatus, which comprises cleaning blades (12, 112) in association with each said roller and which comprises means for immediate recovery of the liquid supplied by the said bar or bars along the sides of the strip of paper when the latter has a width smaller than the maximum width which can be used by the printing machine, characterized in that in combination or not with the mobility of the said blades, means are envisaged for rotation of the said roller or rollers (6, 16) with a speed and a direction of rotation related to the feeding speed of the strip of paper.
8. Apparatus according to Claim 7), in which the said rotation of the roller or rollers (6, 16) may be obtained by means of drive systems of the electromechanical or other type which are active for the entire working cycle of the said apparatus and which for example use the analog signal of the printing machine in order to synchronize the rotation of the rollers with the feeding speed of the strip of paper.
9. Apparatus according to Claim 7), in which the said rotation of the roller or rollers (6, 16) may be obtained by means of drive systems of the electromechanical or other type which are active only during the initial part of the working cycle of the said apparatus, simply in order to ensure that the rollers are already rotating when they make contact with the strip of paper which then intervenes to keep the said rollers correctly rotating.
10. Apparatus according to Claim 7), in which the rotation of the roller or rollers (6, 16) may be obtained by means of drives which for example derive the rotation of at least one of the said rollers from that of the adjacent roller (5) for transmission of the strip of paper (N) and which then transmit the rotation to the other roller.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ITBO20070107 ITBO20070107A1 (en) | 2007-02-22 | 2007-02-22 | APPARATUS FOR CLEANING CYLINDERS IN CONTINUOUS PRINTING MACHINES. |
| ITBO2007A000107 | 2007-02-22 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| WO2008102277A2 true WO2008102277A2 (en) | 2008-08-28 |
| WO2008102277A3 WO2008102277A3 (en) | 2008-10-23 |
Family
ID=39302325
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/IB2008/050209 WO2008102277A2 (en) | 2007-02-22 | 2008-01-21 | Apparatus for cleaning cylinders in continuous printing machines |
Country Status (2)
| Country | Link |
|---|---|
| IT (1) | ITBO20070107A1 (en) |
| WO (1) | WO2008102277A2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104438185A (en) * | 2014-12-29 | 2015-03-25 | 愉悦家纺有限公司 | Cleaning machine for rotary printing screen |
| CN104589791A (en) * | 2014-12-29 | 2015-05-06 | 愉悦家纺有限公司 | Cylinder washing machine |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0435269A1 (en) * | 1989-12-27 | 1991-07-03 | Dai Nippon Insatsu Kabushiki Kaisha | Cleaning apparatus for impression cylinder of offset sheet-fed press |
| EP0713771A1 (en) * | 1994-11-26 | 1996-05-29 | Baldwin-Gegenheimer GmbH | Cleaning device for rotating elements in printing machines |
-
2007
- 2007-02-22 IT ITBO20070107 patent/ITBO20070107A1/en unknown
-
2008
- 2008-01-21 WO PCT/IB2008/050209 patent/WO2008102277A2/en active Application Filing
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0435269A1 (en) * | 1989-12-27 | 1991-07-03 | Dai Nippon Insatsu Kabushiki Kaisha | Cleaning apparatus for impression cylinder of offset sheet-fed press |
| EP0713771A1 (en) * | 1994-11-26 | 1996-05-29 | Baldwin-Gegenheimer GmbH | Cleaning device for rotating elements in printing machines |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104438185A (en) * | 2014-12-29 | 2015-03-25 | 愉悦家纺有限公司 | Cleaning machine for rotary printing screen |
| CN104589791A (en) * | 2014-12-29 | 2015-05-06 | 愉悦家纺有限公司 | Cylinder washing machine |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2008102277A3 (en) | 2008-10-23 |
| ITBO20070107A1 (en) | 2008-08-23 |
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