GB2423498A - Visible green spectrum laser engraving machine - Google Patents
Visible green spectrum laser engraving machine Download PDFInfo
- Publication number
- GB2423498A GB2423498A GB0503476A GB0503476A GB2423498A GB 2423498 A GB2423498 A GB 2423498A GB 0503476 A GB0503476 A GB 0503476A GB 0503476 A GB0503476 A GB 0503476A GB 2423498 A GB2423498 A GB 2423498A
- Authority
- GB
- United Kingdom
- Prior art keywords
- cells
- engraving
- laser
- visible green
- machine
- 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.)
- Granted
Links
- 238000010147 laser engraving Methods 0.000 title claims abstract description 15
- 238000001228 spectrum Methods 0.000 title claims abstract description 15
- 239000000919 ceramic Substances 0.000 claims abstract description 11
- 239000000463 material Substances 0.000 claims abstract description 10
- 239000007788 liquid Substances 0.000 claims abstract description 9
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 3
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 3
- 239000000835 fiber Substances 0.000 claims abstract description 3
- 239000004033 plastic Substances 0.000 claims abstract description 3
- 229920003023 plastic Polymers 0.000 claims abstract description 3
- 229920000642 polymer Polymers 0.000 claims abstract description 3
- UONOETXJSWQNOL-UHFFFAOYSA-N tungsten carbide Chemical compound [W+]#[C-] UONOETXJSWQNOL-UHFFFAOYSA-N 0.000 claims description 6
- 229910052751 metal Inorganic materials 0.000 claims description 5
- 239000002184 metal Substances 0.000 claims description 5
- 238000010521 absorption reaction Methods 0.000 claims description 3
- 230000001360 synchronised effect Effects 0.000 claims description 2
- 238000000034 method Methods 0.000 description 15
- 238000000576 coating method Methods 0.000 description 11
- 239000011248 coating agent Substances 0.000 description 7
- 238000004140 cleaning Methods 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 2
- 238000007749 high velocity oxygen fuel spraying Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- WGLPBDUCMAPZCE-UHFFFAOYSA-N Trioxochromium Chemical compound O=[Cr](=O)=O WGLPBDUCMAPZCE-UHFFFAOYSA-N 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910000423 chromium oxide Inorganic materials 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- QDOXWKRWXJOMAK-UHFFFAOYSA-N dichromium trioxide Chemical compound O=[Cr]O[Cr]=O QDOXWKRWXJOMAK-UHFFFAOYSA-N 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/36—Removing material
- B23K26/38—Removing material by boring or cutting
- B23K26/382—Removing material by boring or cutting by boring
- B23K26/389—Removing material by boring or cutting by boring of fluid openings, e.g. nozzles, jets
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/36—Removing material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B44—DECORATIVE ARTS
- B44C—PRODUCING DECORATIVE EFFECTS; MOSAICS; TARSIA WORK; PAPERHANGING
- B44C1/00—Processes, not specifically provided for elsewhere, for producing decorative surface effects
- B44C1/22—Removing surface-material, e.g. by engraving, by etching
- B44C1/228—Removing surface-material, e.g. by engraving, by etching by laser radiation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41C—PROCESSES FOR THE MANUFACTURE OR REPRODUCTION OF PRINTING SURFACES
- B41C1/00—Forme preparation
- B41C1/02—Engraving; Heads therefor
- B41C1/04—Engraving; Heads therefor using heads controlled by an electric information signal
- B41C1/05—Heat-generating engraving heads, e.g. laser beam, electron beam
-
- 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
- B41N7/00—Shells for rollers of printing machines
-
- 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
- B41N7/00—Shells for rollers of printing machines
- B41N7/06—Shells for rollers of printing machines for inking rollers
Landscapes
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- Mechanical Engineering (AREA)
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Laser Beam Processing (AREA)
Abstract
The machine engraves in several modes a combination of the shorter wavelengths and the machine controls combine to engrave unique cell configurations, which has a higher liquid transfer capacity without increasing the depth of the cells, with improved durability and a higher quality engraving. Cells are formed in helices and can have different forms by laser power changes. The visible green spectrum laser engraving machine can engrave computer generated digital information for designs to be applied to ceramic, metallic carbide, polymer plates, rubber rollers, sleeves, plastics and carbon fibre materials and any other material which a design can be engraved.
Description
Visible green spectrum laser engraving machine.
The present invention relates to a visible green spectrum laser engraving machine for the engraving of liquid transfer rollers or sleeves, the method of production and system for production thereof.
The earlier known methods of engraving the rollers, are using mills engraving into steel or copper rollers and hard chromed plated.
The present method is coating the roller with chromium oxide (Ceramic) and engraving the roller using a laser for an increase in life expectance.
It is an object of the present invention to further improve life expectance of the rollers or sleeves and with the shorter wavelength 0. 53gm or any parts of the visible green spectrum will allow greater beam power absorption and smaller beam focus diameter which will increase the resolution of the roller with superior quality and substantially reduced (recast), than the traditional method.
Principal engraving applications the wavelength of 0.53gm and any parts of the visible green spectrum has been demonstrated as the most viable laser for achieving tolerances of better than + or - 1gm in engravings with diameters in the range 5-100gm. the high peak power and excellent beam quality enable high resolution engraving with smooth walls and controlled or near ZC() taper with a flatter bottom that produces a bucket configuration as seen in figures 1,2,3 to be produced in metal carbide surfaces, ceramics and other hard materials.
The visible green laser engraving machine for the engraving of rollers or sleeve comprising a coating, the said coating being substantially of Tungsten Carbide or Ceramic and the visible green laser producing engraving formed on the surface of the said coatings.
The combination of the visible green spectrum laser with shorter wavelengths and the machine controls combine to engrave unique cell configurations which has a higher liquid transfer capacity without increasing the depth of the cells, with improved durability and a higher quality laser engraving, for rollers and sleeves.
In the case of the laser two tone (LTT) engraving two different cell structure instead of uniform cells are produced adjacent to each other with different depth and surface technology, as in figure 1 in this method the ink transfer occurs unaided as a coating from the cells to the plate or directly to the substrate the engraving angles of 45/50/55/60 degrees are the most popular.
The laser can also produce engraving comprises dots of the same sizes with a predetermined depths as in figure 2 angles of 30 / 45 I 60 degrees are most used.
Although the invention is ideally suited for use in laser engraving ceramic and metal carbide surfaces sprayed onto cylinders rolls or sleeves, preferably for metering rolls, sleeves, the rolls or sleeves, could comprise of aluminium, steel or other base material. Suitable coatings, such as chrome oxide, tungsten carbide or other mixtures of metallic carbide coating thereof could be used and applied to the surface of the roller or sleeve.
The preferred or metallic carbide coatings can be applied to the metal surface of the roll or sleeve by either of the well-known techniques; namely, HVOF or the plasma coating process or any other thermal spray technique. The thickness of the coating applied by either the plasma or HVOF process can range from 0.5 to 1mm and the roughness ranges from about 50 to about 1000 Ra depending on the process. Extremely high were resistant, with optimum toughness, high impact strength achieving 1650 Vickers, equivalent to RC. 80 hardness.
The present invention is a visible green spectrum laser engraving machine.
Engraving cells using a laser with shorter wavelengths, within the visible green spectrum. The machine engraves in several modes 1st mode cells in a helix in the same sizes screen in figure 1 / 2' setting with two different cell sizes screen in figure 2.
Single or multiple rotational settings can be programmed, the traverse is then started when the laser is in the off position and only starts engraving when the traverse stops, different power levels can be used from a row of cells to the adjacent row of cells producing a unique cell configuration, screen in figure 3.
The invention produces cells with greater absorption, suitable for engraving ceramic surfaces and especially reflective metal carbide materials such as tungsten carbide. The shorter wavelength of the visible green laser can produce smaller spot size therefore finer engraved cells can be achieved, as fine as 2,000 Ipi. The laser pulses are synch ronised with the main drive and traverse motors.
According to the present invention there is provided a method of the visible green laser engraving roller or sleeves comprising the following steps:- (a) coating the surface of the said roller or sleeve with Ceramic or Tungsten Carbide and (b) Laser engraving the surface of the said Ceramic or Tungsten Carbide using the visible green spectrum laser engraving machine.
Method of the invention differs from that produced by conventional techniques in that the sides of the cells have a steeper gradient for a given depth of cell, the cells produced according to the present invention have a greater volume than those produced by conventional techniques. Also the bottom surface of a cell produced by the method of the invention is flatter than that of a cell produced by conventional engraved techniques. These differences enable a higher liquid carrying capability to be achieved and therefore a higher liquid transfer capacity without increasing the depth of the cells.
Furthermore, the shape of the cells produced according to the invention lends itself more easily to cleaning techniques so that thorough cleaning of the cells is more likely to be achieved by the cleaning techniques currently in use. The shape of the cells produced according to the invention also enables a more efficient transfer of liquid therefore less likelihood of liquid being left in the bottom of the cells after transfer and therefore renders the problem of drying out of liquid in the cells less likely to occur.
The visible green spectrum laser engraving machine can engrave computer generated digital information for designs to be applied to ceramic, metallic carbide, polymer plates, rubber rollers, sleeves, plastics and carbon fibre materials and any other material which a design can be engraved.
Claims (7)
- The present invention is a visible green spectrum laser engraving machine. Engraving cells using a laser with shorter wavelengths, within the visible green spectrum.
- 2 The machine engraves in several modes 1st mode cells engraved in a helix of the same sizes, 2' mode engraving, with two different cell sizes.
- 3 Single or multiple rotational sequences are programmed, the traverse is then started when the laser is in the off position and only starts engraving when the traverse stops. Different power levels can be used from a row of cells to the adjacent row of cells producing a unique cell configuration.
- 4 The invention produces cells with greater absorption, suitable for engraving ceramic surfaces and especially reflective metal carbide materials such as tungsten carbide.
- The shorter wavelength of the visible green laser can produce smaller spot size therefore finer engraved cells can be achieved, as fine as 2,000 Ipi, the laser pulses are synchronised with the main drive and traverse motors.
- 6 The combination of the visible green spectrum laser with shorter wavelengths and the machine controls combine to engrave unique cell configurations which has a higher liquid transfer capacity without increasing the depth of the cells, with improved durability and a higher quality laser engraving, for rollers and sleeves.
- 7 The visible green spectrum laser engraving machine can engrave computer generated digital information for designs to be applied to ceramic, metallic carbide, polymer plates, rubber rollers, sleeves, plastics and carbon fibre materials and any other material which a design can be engraved.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB0503476A GB2423498B (en) | 2005-02-19 | 2005-02-19 | Visible green spectrum laser engraving machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB0503476A GB2423498B (en) | 2005-02-19 | 2005-02-19 | Visible green spectrum laser engraving machine |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| GB0503476D0 GB0503476D0 (en) | 2005-03-30 |
| GB2423498A true GB2423498A (en) | 2006-08-30 |
| GB2423498B GB2423498B (en) | 2007-07-04 |
Family
ID=34401001
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB0503476A Expired - Fee Related GB2423498B (en) | 2005-02-19 | 2005-02-19 | Visible green spectrum laser engraving machine |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB2423498B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103862179A (en) * | 2014-03-12 | 2014-06-18 | 北京工业大学 | Laser machining method for fine scribing structure at ceramic surface |
| US8900803B2 (en) | 2010-06-21 | 2014-12-02 | James Hardie Technology Limited | Method for marking a substrate |
| US9017774B2 (en) | 2010-06-21 | 2015-04-28 | James Hardie Technology Limtied | Method for marking a coated substrate |
| CN109624580A (en) * | 2018-12-06 | 2019-04-16 | 蓝思科技（长沙）有限公司 | The radium-shine processing technology of ceramic material product and ceramic material product and electronic equipment |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113369701B (en) * | 2020-03-09 | 2024-02-06 | 大族激光科技产业集团股份有限公司 | Method and device for processing anti-fake pattern on transparent plastic product |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1326775A (en) * | 1969-12-09 | 1973-08-15 | Applied Display Services | Method and apparatus for making printing plates and other materials having a surface in relief |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2423053B (en) * | 2005-02-10 | 2007-06-20 | Bernard John Boyle | Visible green laser engraved liquid metering rollers |
-
2005
- 2005-02-19 GB GB0503476A patent/GB2423498B/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1326775A (en) * | 1969-12-09 | 1973-08-15 | Applied Display Services | Method and apparatus for making printing plates and other materials having a surface in relief |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8900803B2 (en) | 2010-06-21 | 2014-12-02 | James Hardie Technology Limited | Method for marking a substrate |
| US9017774B2 (en) | 2010-06-21 | 2015-04-28 | James Hardie Technology Limtied | Method for marking a coated substrate |
| CN103862179A (en) * | 2014-03-12 | 2014-06-18 | 北京工业大学 | Laser machining method for fine scribing structure at ceramic surface |
| CN109624580A (en) * | 2018-12-06 | 2019-04-16 | 蓝思科技（长沙）有限公司 | The radium-shine processing technology of ceramic material product and ceramic material product and electronic equipment |
Also Published As
| Publication number | Publication date |
|---|---|
| GB2423498B (en) | 2007-07-04 |
| GB0503476D0 (en) | 2005-03-30 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PCNP | Patent ceased through non-payment of renewal fee |
Effective date: 20120219 |