EP0098776A2 - Flachdruckplatte aus Stahl mit mehreren Chromschichten - Google Patents

Flachdruckplatte aus Stahl mit mehreren Chromschichten Download PDF

Info

Publication number
EP0098776A2
EP0098776A2 EP83401346A EP83401346A EP0098776A2 EP 0098776 A2 EP0098776 A2 EP 0098776A2 EP 83401346 A EP83401346 A EP 83401346A EP 83401346 A EP83401346 A EP 83401346A EP 0098776 A2 EP0098776 A2 EP 0098776A2
Authority
EP
European Patent Office
Prior art keywords
chromium
layer
layers
chrome
steel
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
Application number
EP83401346A
Other languages
English (en)
French (fr)
Other versions
EP0098776A3 (en
EP0098776B1 (de
Inventor
Jean-Marie Nouel
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
INNOLITH SA
Original Assignee
Innolith SA
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Innolith SA filed Critical Innolith SA
Priority to AT83401346T priority Critical patent/ATE37163T1/de
Publication of EP0098776A2 publication Critical patent/EP0098776A2/de
Publication of EP0098776A3 publication Critical patent/EP0098776A3/fr
Application granted granted Critical
Publication of EP0098776B1 publication Critical patent/EP0098776B1/de
Expired legal-status Critical Current

Links

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
    • B41N1/00—Printing plates or foils; Materials therefor
    • B41N1/04—Printing plates or foils; Materials therefor metallic
    • B41N1/08—Printing plates or foils; Materials therefor metallic for lithographic printing
    • B41N1/10—Printing plates or foils; Materials therefor metallic for lithographic printing multiple

Definitions

  • the present invention relates to offset plates based on steel (or black iron) and with multiple layers of chromium.
  • the printer part was supplied by an ink-sensitive photosensitive resin (or a photopolymer).
  • the protective layer is a thin layer of shiny chrome.
  • Such layers are perfectly known and are used for the decoration and for the protection against corrosion of metallic surfaces susceptible to rusting in applications of the light fixture type, chromed chairs, etc.
  • the known and described techniques for the production of such layers are obviously usable in the present invention; these techniques imply in particular that the industrial conditions for producing such layers are such that the layers adhere perfectly to the support and cover it as much as possible.
  • electroplating with the use of baths working at relatively high temperatures (at least about 40 ° C.) and if possible with a highly conductive catalyst (addition of active fluorine) such as Si F 6 will be used .
  • microcracked or microcracked chromium could be used as an aquaphile layer of offset plates, taking into account on the one hand its texture and on the other hand its surface properties since said surface can be rendered " matt "and hang the photosensitive layers sufficiently.
  • the second technique for producing thick chromium surface layers consists in producing said layers by superimposing thin elementary layers of chromium.
  • thin elementary layer is meant a chromium layer with a thickness of less than about 0.5 microns.
  • Example 1 The plates A and C of Example 1 are used. Three layers of chromium with a mat appearance and a thickness of 0.40 microns each are deposited on these two plates, by electrolysis at 35 A / dm 2 and at 30 ° C. .
  • a new layer of chromium is deposited under the same conditions as those used when the first layer of bright chromium was deposited.
  • the plate having received this surface layer of "shiny chrome" thickness 0.09 micron retains a matt appearance but has been shown to be particularly resistant to corrosion.
  • This plate is immersed for 20 seconds in a 70 ° C. bath containing 19 g of sodium phosphate and 19 g of sodium dichromate.
  • the plates according to the invention could without baking undergo baking (10 minutes at 220 ° C. for example) intended to harden the exposed parts of the photosensitive surface layer deposited on the surface of the chrome.
  • T FS titanium free steel
  • 0.25 mm thick 0.15 micron roughness
  • 22% elongation 0.15 micron roughness
  • 34 kg resistance calmed quality
  • the thickness of the chromium is of the order of 0.005 microns.
  • a deposit of chromium with a total thickness of approximately 1.2 microns is thus obtained.
  • Example 6 was repeated, but treating the steel coil with cathodic degreasing instead of anodic degreasing.
  • the degreasing bath contains soda, carbonate and phosphate; the temperature is 68 ° C, the intensity of 15 A / dm2 and the duration of 5 H.
  • the coil thus degreased is treated as in Example 6.
  • the coils obtained in Examples 6 and 7 were cut into plates; each coated plate an ink-absorbing photosensitive layer, then baked at around 210 ° C. The plates obtained were found to be excellent for printing.

Landscapes

  • Laminated Bodies (AREA)
  • Electroplating Methods And Accessories (AREA)
  • Other Surface Treatments For Metallic Materials (AREA)
  • Electroplating And Plating Baths Therefor (AREA)
EP83401346A 1982-07-02 1983-06-30 Flachdruckplatte aus Stahl mit mehreren Chromschichten Expired EP0098776B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT83401346T ATE37163T1 (de) 1982-07-02 1983-06-30 Flachdruckplatte aus stahl mit mehreren chromschichten.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8211690A FR2529511A1 (fr) 1982-07-02 1982-07-02 Plaques offset a base acier et a multicouches de chrome
FR8211690 1982-07-02

Publications (3)

Publication Number Publication Date
EP0098776A2 true EP0098776A2 (de) 1984-01-18
EP0098776A3 EP0098776A3 (en) 1985-04-10
EP0098776B1 EP0098776B1 (de) 1988-09-14

Family

ID=9275648

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83401346A Expired EP0098776B1 (de) 1982-07-02 1983-06-30 Flachdruckplatte aus Stahl mit mehreren Chromschichten

Country Status (4)

Country Link
EP (1) EP0098776B1 (de)
AT (1) ATE37163T1 (de)
DE (1) DE3377978D1 (de)
FR (1) FR2529511A1 (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4687729A (en) * 1985-10-25 1987-08-18 Minnesota Mining And Manufacturing Company Lithographic plate
US4996131A (en) * 1987-12-28 1991-02-26 Nouel Jean Marie Offset plate with thin chromium layer and method of making
US6596410B2 (en) * 2000-09-29 2003-07-22 Nippon Piston Ring Co., Ltd. Chrome-plated sliding member and manufacturing method thereof

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB475902A (en) * 1936-05-29 1937-11-29 Arthur Ronald Trist Improvements in and relating to printing plates for lithography
US2678299A (en) * 1946-10-04 1954-05-11 Printing Dev Inc Method of making planographic printing plates
GB819067A (en) * 1954-07-31 1959-08-26 Semotal S A Improvements in or relating to printing plates
FR82759E (fr) * 1962-09-27 1964-04-17 Le Quadrimetal Offset Sa Pour Procédé d'impression offset et produits industriels en résultant
FR2142014A1 (de) * 1971-06-18 1973-01-26 M & T Chemicals Inc
FR2152627A1 (de) * 1971-09-07 1973-04-27 M & T Chemicals Inc
EP0022033A1 (de) * 1979-07-02 1981-01-07 Jean-Marie Nouel Offsetdruckplatten, die eine, mittels eines dünnen Chrombelags mattierte, hydrophile Oberfläche aufweisen
FR2480677A1 (fr) * 1980-04-16 1981-10-23 Nouel Jean Marie Nouveaux supports de plaques offset en fer noir

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB475902A (en) * 1936-05-29 1937-11-29 Arthur Ronald Trist Improvements in and relating to printing plates for lithography
US2678299A (en) * 1946-10-04 1954-05-11 Printing Dev Inc Method of making planographic printing plates
GB819067A (en) * 1954-07-31 1959-08-26 Semotal S A Improvements in or relating to printing plates
FR82759E (fr) * 1962-09-27 1964-04-17 Le Quadrimetal Offset Sa Pour Procédé d'impression offset et produits industriels en résultant
FR2142014A1 (de) * 1971-06-18 1973-01-26 M & T Chemicals Inc
FR2152627A1 (de) * 1971-09-07 1973-04-27 M & T Chemicals Inc
EP0022033A1 (de) * 1979-07-02 1981-01-07 Jean-Marie Nouel Offsetdruckplatten, die eine, mittels eines dünnen Chrombelags mattierte, hydrophile Oberfläche aufweisen
FR2480677A1 (fr) * 1980-04-16 1981-10-23 Nouel Jean Marie Nouveaux supports de plaques offset en fer noir

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
CHEMICAL ABSTRACTS, vol. 95, no. 10, novembre 1981, page 638, no. 178673w, Columbus, Ohio, USA; ES - A - 493 434 (BEGES S.A.) 16-02-1981 *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4687729A (en) * 1985-10-25 1987-08-18 Minnesota Mining And Manufacturing Company Lithographic plate
US4996131A (en) * 1987-12-28 1991-02-26 Nouel Jean Marie Offset plate with thin chromium layer and method of making
US6596410B2 (en) * 2000-09-29 2003-07-22 Nippon Piston Ring Co., Ltd. Chrome-plated sliding member and manufacturing method thereof

Also Published As

Publication number Publication date
DE3377978D1 (en) 1988-10-20
FR2529511B3 (de) 1985-05-17
FR2529511A1 (fr) 1984-01-06
EP0098776A3 (en) 1985-04-10
ATE37163T1 (de) 1988-09-15
EP0098776B1 (de) 1988-09-14

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