CA2054343A1 - Assembly and method for cleaning a printing roll - Google Patents
Assembly and method for cleaning a printing rollInfo
- Publication number
- CA2054343A1 CA2054343A1 CA 2054343 CA2054343A CA2054343A1 CA 2054343 A1 CA2054343 A1 CA 2054343A1 CA 2054343 CA2054343 CA 2054343 CA 2054343 A CA2054343 A CA 2054343A CA 2054343 A1 CA2054343 A1 CA 2054343A1
- Authority
- CA
- Canada
- Prior art keywords
- roll
- printing press
- chill roll
- condensate
- assembly
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
Links
- 238000007639 printing Methods 0.000 title claims abstract description 36
- 238000000034 method Methods 0.000 title claims description 10
- 238000004140 cleaning Methods 0.000 title description 2
- 239000004744 fabric Substances 0.000 claims abstract description 16
- 239000007788 liquid Substances 0.000 claims abstract description 15
- 239000002904 solvent Substances 0.000 claims abstract description 13
- 239000003595 mist Substances 0.000 claims abstract description 9
- 239000007921 spray Substances 0.000 claims abstract description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 20
- 238000007645 offset printing Methods 0.000 claims description 8
- 238000005507 spraying Methods 0.000 claims description 5
- 239000006096 absorbing agent Substances 0.000 claims 10
- 239000002184 metal Substances 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 230000002745 absorbent Effects 0.000 description 1
- 239000002250 absorbent Substances 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
Landscapes
- Inking, Control Or Cleaning Of Printing Machines (AREA)
- Supply, Installation And Extraction Of Printed Sheets Or Plates (AREA)
Abstract
ABSTRACT
A printing press arrangement includes printing units, a dryer and chill rolls used to cool the hot ink and printed web upon exit from the dryer. During operation, condensed ink solvent builds up on the surface of the chill rolls. This build up of condensate is removed by a wiper assembly that is mounted to the printing press. The wiper assembly includes a cloth wrapped sponge-wiper that engages and wipes the exterior surface of the chill roll as the chill roll rotates. The wiper assembly further includes a plurality of nozzles that spray a liquid mist onto the exterior surface of the chill roll. The liquid mist softens the condensate deposits allowing them to be wiped from the exterior surface of the chill roll by the wiper.
A printing press arrangement includes printing units, a dryer and chill rolls used to cool the hot ink and printed web upon exit from the dryer. During operation, condensed ink solvent builds up on the surface of the chill rolls. This build up of condensate is removed by a wiper assembly that is mounted to the printing press. The wiper assembly includes a cloth wrapped sponge-wiper that engages and wipes the exterior surface of the chill roll as the chill roll rotates. The wiper assembly further includes a plurality of nozzles that spray a liquid mist onto the exterior surface of the chill roll. The liquid mist softens the condensate deposits allowing them to be wiped from the exterior surface of the chill roll by the wiper.
Description
RRDO: 030 X~5~3(~3 A~ IBIJY AND ~qETlIOD FOR CI.EAN~ NG A PRINq!I2JG ROI.I
' ` ` 10 ~.~
` ~ The present invention relates to a new and improved device for removing ink solvent in the form of condensate from a chill roll in a printing press; and to a new and improved method for removing condensate from the surface of a chill roll; and more particularly, to a new and improved wiper assembly including a wiper for wiping the surface of a chill roll and a nozzle assembly for spraying a liquid mist onto the surface of the chill roll prior to wiping.
.
A typical printing press, such as a web-offset ~-~ printing press, includes a splicer with rolls of paper, known as the web, on which graphics or other information are printed. The web from the splicer passes through an infeed and into one or more printing units where ink is applied to the web. The web passes *rom the printing ` ~ ~ units into a dryer that dries the ink and the web. Upon exiting the dryer, the web passes through chill rolls ~30 which cool the hot ink and printed web. The web is then ~ folded in a folder.
:.`
During printing, condensed ink solvent builds up on the exterior surface of the chill rolls forming a ~35 condensate. If this condensate is not removed, it causes re-softening of the ink on the printed web and condensation streaks occur on the finished product. The ; -' presses must then be run at a slower speed in order to avoid these streaks. To eliminate or remove the solvents ~;
.
, .
.. ' ZC5~3~3 and oil from the chill rolls, a cloth cleaner has been used. One such cloth chill roll cleaner is the Model 1301 Chill Roll Cleaner manufactured by saldwin Graphic Products of Stamford, Connec~icut. This Chill Roll Cleaner presses an absorbent cloth against the surface of a chill roll to wipe the surface and remove condensate.
As the cloth becomes soiled, it is automatically advanced to expose fresh cloth. Experience with a cloth chill roll cleaner of this type has not proven totally surcessful since complete removal of the condensate is not attainable and build~up of condensate gradually occurs.
Other methods of cleaning condensate from a chill roll have included scraper blade type cleaners in which a metal scraper blade is pressed against the exterior surface of a rotating chill roll. These metal blades are undesirable because they have a tendency to score the chill roll surface requiring frequent replacement or repair.
Briefly, the present invention is directed to a new and improved wiper assembly for a chill roll in a printing press such as a web offset printing press. The wiper assembly includes a wiper mounted on the printing press frame and biased into wiping contact with the exterior surface of a chill roll. The wiper assembly includes a plurality of nozzles mounted adjacent the chill roll and connected to a source of liquid such as water so as to spray a liquid mist onto the surface of the chill roll at a location in advance of the wiper. The water softens condensate formed on the outer surface of the chill roll ~` allowing the condensate to be wiped off of the chill roll surface by the wiper.
-3- ~5~3 Other objects and advantages o~ the invention will become apparent upon reading the following detailed ; description and upon reference to the drawings in which:
FIG. 1 is a schematic diagram of a typical printing press arrangement;
FIG. 2 is a top plan view of a chill roll and a wiper assembly constructed in accordance with the principles of the present invention; and FIG. 3 is a side elevation schematic view of a chill roll and a wiper assembly of the present invention.
Referring initially to FIG. 1, there is illustrated a typical printing press arrangement generally designated by the reference numeral 10. The printing press arrangement 10 includes a splicer generally designated by the reference numeral 12. A web of paper 14 passes from the :20 splicer 12 into an infeed 16 that feeds the web 14 to a : plurality of printing units generally designated by the reference numeral 18. Text, words and other indicia are printed on the web 14 by the printing units 18. Upon exiting:the printing units 18, the web 14 passes through a dryer 20 that dries the ink and the web 14. The hot ink and hot printed web 14 are then passed through chills 22 that includes chill rolls such as a first chill roll 24.
The chills 22 cool the web 14 and the ink allowing the web to be folded and cut to a preferred size by a folder 22.
A problem experi~.nced in using the press arrangement 10 is that ink solvent condenses and forms a condensate build up ~ on the outer surface of the chills and particularly on the : outer surface of the first chill roll ~4. If the condensate is not removed, it causes re-softening of the ink on the printed web 14 leaving streake on the printed web 14. Under these conditions, the printing press ~.
_4 ~ 3~3 arrangement 10 must be operated at a slower speed in an effort to minimize streaking.
Referring now to FIGS. 2 and 3, a new and improved assembly and method of removing condensate from the outer surface of the chill roll 24 is illustrated. In the arrangement of the present invention the chill roll 24 is rotatably mounted on a press frame 28 by a spindle or axle 30. During operation, the chill roll 24 is rotated clockwise as viewed in FIG. 3. The outer surface of the chill roll 24 on which condensate build up occurs is in wiping engagement with a wiper 32. The wiper 32 may be cloth or preferably is a sponge wrapped by cloth. The wiper 32 is mounted to the press frame 28 by a wiper holder assembly generally designated by the reference numeral 34. The wiper holder assembly includes a base member 36 that is mounted to the press frame 28 by a bracket 38. The wiper 32 is fixedly secured to a wiper ; holder 40 that i5 pivotly mounted on an arm 42 by a pin 44. The arm 42 is pivotally mounted on the base member 36 `;
by a pin 46. This mounting of the wiper 32 allows it to be positioned relative to the exterior surface of the chill roll 24, and also allows the pressure of engagement of the wiper 32 with the chill roll 24 to be adjusted.
Although it has been known to engage a cloth wiper against the exterior surface of a chill roll to remove condensate, the present invention includes a nozzle assembly generally designated the reference numeral 48 in addition to the wiper 32. The nozzle assembly 48 sprays a mist of water or similar liquid onto the exterior surface of the chill roll 24 at a location in advance of the wiper 32.
It has been discovered that spraying water onto the exterior surface of the chill roll 24 softens the ink solvent condensate allowing the condensate to be removed easily by the wiper 32. Thi~ i5 surprising since the ink ., , , ` , ' ' :~5'13~3 solvent is immiscible with water and the water would be expected to cause problems with the paper web 14.
Th~ nozzle assembly 48 includes a line 51 that is connected to a water or liquid supply through a filter 52.
The flow of liquid through the line 51 is controlled by an electric solenoid valve 54 and a shut off valve 55. The line 51 is connected to a tubing 50 by a ~itting 53. The tubing 50 is secured to the printing press rame 28 by a nozzle assembly hanger 56. The tubing 50 includes one or more nozzles 58 that are directed toward the surface of the chill roll 24 and are o~ the type to form a spray mist ; of liquid. To catch any drips from the nozzles 58, a drip pan 60 is clamped to the nozzles 58 and the tubing 50 by clamp assemblies 62. Liquid collected in the drip pan 60 drains through a drain 64 to a drain tube 66.
In operation, the chill roll 24 is rotated in a clockwise direction as viewed in FIG. 3, and the cloth wrapped sponge or wiper 32 engages the exterior surface of the chill roll 24. The spray nozzles 58 spray a fine mist ~: of water or other liquid onto the surface o~ the chill roll 24 in advance of the wiper 32. The water or liquid functions to soften any condensate built up or accumulated : 25 on the exterior surface of the chill roll 24 allowing the wiper 32 to remove the condensate without any damage to the sur~ace of the chill roll 24. In addition, due to the softening effect of the liquid on the condensate, the wiper 32 is much more efficient and effective than prior art wip~r pads such that the press arrangement can be operated at higher speeds without undesirable streaking on the finished product.
.
' ` ` 10 ~.~
` ~ The present invention relates to a new and improved device for removing ink solvent in the form of condensate from a chill roll in a printing press; and to a new and improved method for removing condensate from the surface of a chill roll; and more particularly, to a new and improved wiper assembly including a wiper for wiping the surface of a chill roll and a nozzle assembly for spraying a liquid mist onto the surface of the chill roll prior to wiping.
.
A typical printing press, such as a web-offset ~-~ printing press, includes a splicer with rolls of paper, known as the web, on which graphics or other information are printed. The web from the splicer passes through an infeed and into one or more printing units where ink is applied to the web. The web passes *rom the printing ` ~ ~ units into a dryer that dries the ink and the web. Upon exiting the dryer, the web passes through chill rolls ~30 which cool the hot ink and printed web. The web is then ~ folded in a folder.
:.`
During printing, condensed ink solvent builds up on the exterior surface of the chill rolls forming a ~35 condensate. If this condensate is not removed, it causes re-softening of the ink on the printed web and condensation streaks occur on the finished product. The ; -' presses must then be run at a slower speed in order to avoid these streaks. To eliminate or remove the solvents ~;
.
, .
.. ' ZC5~3~3 and oil from the chill rolls, a cloth cleaner has been used. One such cloth chill roll cleaner is the Model 1301 Chill Roll Cleaner manufactured by saldwin Graphic Products of Stamford, Connec~icut. This Chill Roll Cleaner presses an absorbent cloth against the surface of a chill roll to wipe the surface and remove condensate.
As the cloth becomes soiled, it is automatically advanced to expose fresh cloth. Experience with a cloth chill roll cleaner of this type has not proven totally surcessful since complete removal of the condensate is not attainable and build~up of condensate gradually occurs.
Other methods of cleaning condensate from a chill roll have included scraper blade type cleaners in which a metal scraper blade is pressed against the exterior surface of a rotating chill roll. These metal blades are undesirable because they have a tendency to score the chill roll surface requiring frequent replacement or repair.
Briefly, the present invention is directed to a new and improved wiper assembly for a chill roll in a printing press such as a web offset printing press. The wiper assembly includes a wiper mounted on the printing press frame and biased into wiping contact with the exterior surface of a chill roll. The wiper assembly includes a plurality of nozzles mounted adjacent the chill roll and connected to a source of liquid such as water so as to spray a liquid mist onto the surface of the chill roll at a location in advance of the wiper. The water softens condensate formed on the outer surface of the chill roll ~` allowing the condensate to be wiped off of the chill roll surface by the wiper.
-3- ~5~3 Other objects and advantages o~ the invention will become apparent upon reading the following detailed ; description and upon reference to the drawings in which:
FIG. 1 is a schematic diagram of a typical printing press arrangement;
FIG. 2 is a top plan view of a chill roll and a wiper assembly constructed in accordance with the principles of the present invention; and FIG. 3 is a side elevation schematic view of a chill roll and a wiper assembly of the present invention.
Referring initially to FIG. 1, there is illustrated a typical printing press arrangement generally designated by the reference numeral 10. The printing press arrangement 10 includes a splicer generally designated by the reference numeral 12. A web of paper 14 passes from the :20 splicer 12 into an infeed 16 that feeds the web 14 to a : plurality of printing units generally designated by the reference numeral 18. Text, words and other indicia are printed on the web 14 by the printing units 18. Upon exiting:the printing units 18, the web 14 passes through a dryer 20 that dries the ink and the web 14. The hot ink and hot printed web 14 are then passed through chills 22 that includes chill rolls such as a first chill roll 24.
The chills 22 cool the web 14 and the ink allowing the web to be folded and cut to a preferred size by a folder 22.
A problem experi~.nced in using the press arrangement 10 is that ink solvent condenses and forms a condensate build up ~ on the outer surface of the chills and particularly on the : outer surface of the first chill roll ~4. If the condensate is not removed, it causes re-softening of the ink on the printed web 14 leaving streake on the printed web 14. Under these conditions, the printing press ~.
_4 ~ 3~3 arrangement 10 must be operated at a slower speed in an effort to minimize streaking.
Referring now to FIGS. 2 and 3, a new and improved assembly and method of removing condensate from the outer surface of the chill roll 24 is illustrated. In the arrangement of the present invention the chill roll 24 is rotatably mounted on a press frame 28 by a spindle or axle 30. During operation, the chill roll 24 is rotated clockwise as viewed in FIG. 3. The outer surface of the chill roll 24 on which condensate build up occurs is in wiping engagement with a wiper 32. The wiper 32 may be cloth or preferably is a sponge wrapped by cloth. The wiper 32 is mounted to the press frame 28 by a wiper holder assembly generally designated by the reference numeral 34. The wiper holder assembly includes a base member 36 that is mounted to the press frame 28 by a bracket 38. The wiper 32 is fixedly secured to a wiper ; holder 40 that i5 pivotly mounted on an arm 42 by a pin 44. The arm 42 is pivotally mounted on the base member 36 `;
by a pin 46. This mounting of the wiper 32 allows it to be positioned relative to the exterior surface of the chill roll 24, and also allows the pressure of engagement of the wiper 32 with the chill roll 24 to be adjusted.
Although it has been known to engage a cloth wiper against the exterior surface of a chill roll to remove condensate, the present invention includes a nozzle assembly generally designated the reference numeral 48 in addition to the wiper 32. The nozzle assembly 48 sprays a mist of water or similar liquid onto the exterior surface of the chill roll 24 at a location in advance of the wiper 32.
It has been discovered that spraying water onto the exterior surface of the chill roll 24 softens the ink solvent condensate allowing the condensate to be removed easily by the wiper 32. Thi~ i5 surprising since the ink ., , , ` , ' ' :~5'13~3 solvent is immiscible with water and the water would be expected to cause problems with the paper web 14.
Th~ nozzle assembly 48 includes a line 51 that is connected to a water or liquid supply through a filter 52.
The flow of liquid through the line 51 is controlled by an electric solenoid valve 54 and a shut off valve 55. The line 51 is connected to a tubing 50 by a ~itting 53. The tubing 50 is secured to the printing press rame 28 by a nozzle assembly hanger 56. The tubing 50 includes one or more nozzles 58 that are directed toward the surface of the chill roll 24 and are o~ the type to form a spray mist ; of liquid. To catch any drips from the nozzles 58, a drip pan 60 is clamped to the nozzles 58 and the tubing 50 by clamp assemblies 62. Liquid collected in the drip pan 60 drains through a drain 64 to a drain tube 66.
In operation, the chill roll 24 is rotated in a clockwise direction as viewed in FIG. 3, and the cloth wrapped sponge or wiper 32 engages the exterior surface of the chill roll 24. The spray nozzles 58 spray a fine mist ~: of water or other liquid onto the surface o~ the chill roll 24 in advance of the wiper 32. The water or liquid functions to soften any condensate built up or accumulated : 25 on the exterior surface of the chill roll 24 allowing the wiper 32 to remove the condensate without any damage to the sur~ace of the chill roll 24. In addition, due to the softening effect of the liquid on the condensate, the wiper 32 is much more efficient and effective than prior art wip~r pads such that the press arrangement can be operated at higher speeds without undesirable streaking on the finished product.
.
Claims (14)
1. A method for removing condensate from a roll in a printing press, comprising the steps of:
rotating a roll in a printing press;
applying moisture to an outer surface of said roll;
and absorbing moisture and condensate off of said outer surface of said roll.
rotating a roll in a printing press;
applying moisture to an outer surface of said roll;
and absorbing moisture and condensate off of said outer surface of said roll.
2. The method for removing condensate from a roll in a printing press as set forth in claim 1 wherein said step of applying moisture includes spraying a mist of water on the outer surface of said roll.
3. The method for removing condensate from a roll in a printing press as set forth in claim 1 wherein said step of absorbing moisture and condensate includes applying a cloth wrapped sponge wiper on said outer surface of said roll.
4. A method of removing condensate such as condensed ink solvent from the surface of a chill roll in a printing press, comprising the steps of:
applying water to the surface of a chill roll; and absorbing water and floating condensate from the surface of said chill roll.
applying water to the surface of a chill roll; and absorbing water and floating condensate from the surface of said chill roll.
5. The method of removing condensate such as condensed ink solvent from the surface of a chill roll in a printing press as claimed in claim 4 wherein said step of absorbing water and floating condensate includes pressing a cloth wiper against the surface of said chill roll.
6. The method of removing condensate such as condensed ink solvent from the surface of a chill roll in a printing press as claimed in claim 4 wherein said step of applying water includes spraying a water mist on the surface of said chill roll; and said step of absorbing water and floating condensate includes pressing a cloth and sponge wiper against said surface of said chill roll.
7. An assembly for removing condensate from the surface of a roll in a printing press, comprising:
an absorber holder adapted for mounting on a printing press adjacent a roll, said roll rotatably mounted in said printing press;
an absorber mounted on said absorber holder for engagement with said roll; and a moisture applicator mounted on said printing press for applying a liquid onto said roll.
an absorber holder adapted for mounting on a printing press adjacent a roll, said roll rotatably mounted in said printing press;
an absorber mounted on said absorber holder for engagement with said roll; and a moisture applicator mounted on said printing press for applying a liquid onto said roll.
8. The assembly for removing condensate from the surface of a roll in a printing press set forth in claim 7 wherein said moisture applicator includes a set of liquid spraying nozzles.
9. The assembly for removing condensate from the surface of a roll in a printing press set forth in claim 7 wherein said moisture applicator includes at least one water spray nozzle directed at said roll.
10. The assembly for removing condensate from the surface of a roll in a printing press set forth in claim 7 wherein said absorber is a cloth wiper.
11. The assembly for removing condensate from the surface of a roll in a printing press set forth in claim 7 wherein said roll is a chill roll and said printing press is a web offset printing press.
12. An absorbing assembly for removing condensate such as condensed ink solvent from the surface of a chill roll in a web offset printing press, comprising:
an absorber;
an absorber holder secured to a web offset printing press, said absorber mounted on said absorber holder in contact with a chill roll mounted in said web offset printing press; and a water application assembly mounted on said web offset printing press adjacent to said absorber and said chill roll.
an absorber;
an absorber holder secured to a web offset printing press, said absorber mounted on said absorber holder in contact with a chill roll mounted in said web offset printing press; and a water application assembly mounted on said web offset printing press adjacent to said absorber and said chill roll.
13. The absorbing assembly for removing condensate such as condensed ink solvent from the surface of a chill roll in a web offset printing press as claimed in claim 12 wherein said absorber is a cloth wrapped sponge.
14. The absorbing assembly for removing condensate such as condensed ink solvent from the surface of a chill roll in a web offset printing press as claimed in claim 12 wherein said water application assembly includes at least one nozzle mounted in a position to direct water onto said chill roll.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US60511890A | 1990-10-29 | 1990-10-29 | |
| US07/605,118 | 1990-10-29 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2054343A1 true CA2054343A1 (en) | 1992-04-30 |
Family
ID=24422339
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 2054343 Abandoned CA2054343A1 (en) | 1990-10-29 | 1991-10-28 | Assembly and method for cleaning a printing roll |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JPH04265750A (en) |
| CA (1) | CA2054343A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6058844A (en) * | 1996-09-04 | 2000-05-09 | Consolidated Papers, Inc. | Method for minimizing web-fluting in heat-set, web-offset printing presses |
| CN113043740A (en) * | 2018-11-08 | 2021-06-29 | 泉州台商投资区久协机械科技有限公司 | Structure and method for removing ink stains of paper conveying mechanism of printing machine |
-
1991
- 1991-10-28 CA CA 2054343 patent/CA2054343A1/en not_active Abandoned
- 1991-10-29 JP JP28300891A patent/JPH04265750A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6058844A (en) * | 1996-09-04 | 2000-05-09 | Consolidated Papers, Inc. | Method for minimizing web-fluting in heat-set, web-offset printing presses |
| CN113043740A (en) * | 2018-11-08 | 2021-06-29 | 泉州台商投资区久协机械科技有限公司 | Structure and method for removing ink stains of paper conveying mechanism of printing machine |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH04265750A (en) | 1992-09-21 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US5575211A (en) | Washing Arrangement for rotary printer | |
| US4270450A (en) | Arrangement for washing cylinders on printing presses | |
| DE3614496A1 (en) | WASHING DEVICE FOR PRINTING CYLINDERS OF PRINTING MACHINES | |
| EP0672526B1 (en) | Paper surface cleaning device | |
| CA2054343A1 (en) | Assembly and method for cleaning a printing roll | |
| US5080015A (en) | Method and arrangement for cleaning guide rollers | |
| JP4484234B2 (en) | Dust removal device for printing or processing sheet material | |
| US6047640A (en) | Printing machine for corrugated board sheets and method of cleaning ink fountain of the machine | |
| US5257578A (en) | Device for automatically cleaning blanket cylinders in a offset printing press | |
| JP3363925B2 (en) | Cleaning method and apparatus for printing screen | |
| US20030209158A1 (en) | Continuous conditioning system and method of using same | |
| US5040462A (en) | Apparatus for preventing soiling from printing material | |
| US3545381A (en) | Method of cleaning printing surfaces after printing soft tissue paper | |
| IL36853A (en) | Apparatus and method for cleaning rotating cylindrical surfaces | |
| EP0423093B1 (en) | A method and arrangement for cleaning guide rollers | |
| JP3120283B1 (en) | Automatic cleaning method for printing press and automatic cleaning apparatus used in the method | |
| US6196126B1 (en) | Method and apparatus for preventing pigment buildup during a rotary screen printing process | |
| JP2951637B1 (en) | Corrugated sheet printing machine and method for cleaning ink supply unit of the printing machine | |
| JPH07115468B2 (en) | Cleaning device for outer peripheral surface of cylinder | |
| US4870899A (en) | Prewipe device | |
| JP2948570B1 (en) | Corrugated sheet printing machine | |
| JP3559140B2 (en) | Moving conveyor handrail surface maintenance device for man conveyor | |
| EP0378206B1 (en) | Method and device for cleaning the rubber blanket cylinders in a web-fed rotary press | |
| CA2161478A1 (en) | Washing arrangement for rotary printer | |
| DE102004047238A1 (en) | applicator |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FZDE | Dead |