Patent US3231376A successfully refreshed from Google Patents.
← Back to Patent Explorer
US3231376A Expired / Lapsed US ⏱️ 0.0 years remaining

Lithographic printing surface

Assignee: Harris Graphics Corp
•
Filing: 1960-12-09
•
Granted: 1966-01-25
•
Expires: 1980-12-09
📄 Original PDF 🌐 Google Patents 🔄 Sync Now

Abstract

No abstract record available.

Inventors

  • 👤 Jack L Sorkin
  • 👤 Daniel C Thomas

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-25 04:08
CPC Classifications
B; B41; B41N; B41N3/00; B41N3/03; B41N3/038

Claims Analysis

Total Claims: 3
Claim 1
Independent Claim 182 words
A PROCESS OF BONDING A LIGHT-SENSITIVE MATERIAL TO A METAL SURFACE OF A SUPPORT MEMBER COMPRISING HYDROXYLATING THE METAL SURFACE, COATING THE HYDROXYLATED METAL SURFACE WITH A FILM OF A SOLUTION OF A METAL ESTER IN AN ORGANIC SOLVENT, THE ESTER HAVING THE FORMULA (RO)4M, WHEREIN R IS A MONOVALENT HYDROCARBON RADICAL SELECTED FROM THE GROUP CONSISTING OF PHENYL, TOLYL, XYLYL AND ALIPHATIC RADICALS HAVING FROM 1 TO 8 CARBON ATOMS AND M IS A METAL SELECTED FROM THE GROUP CONSISTING OF TITANIUM AND ZIRCONIUM, SAID SOLUTION CONTAINING SUFFICIENT METAL ESTER TO DEPOSIT AN AMOUNT OF SUCH ESTER ON SAID HYDROXYLATED SURFACE EQUIVALENT TO THAT DEPOISTED BY CONTACTING THE PLATE WITH AN ABOUT 0.1 TO ABOUT 10 WEIGHT PERCENT SOLUTION FOR A PERIOD OF TIME UP TO APPROXIMATELY 5 MINUTES, HYDROLYZING AND CONDENSING SAID ESTER ON SAID HYDROXYLATED METAL SURFACE WHILE REACTING SAID ESTER WITH THE HYDROXYL GROUPS OF THE HYDROXYLATED METAL SURFACE, SAID REACTION PRODUCT BEING HYDROPHILIC, SUBSTANTIALLY FREE OF OXIDES OF M AND SUBSTANTIALLY NON-SUSCEPTIVLE TO FURTHER HYDROLYSIS, AND SUBSEQUENTLY APPLYING A LAYER OF LIGHTSENSITIVE MATERIAL OVER SAID REACTION PRODUCT.
Claim 2
Dependent Claim 182 words
A PROCESS OF BONDING A LIGHT-SENSITIVE MATERIAL TO A METAL SURFACE OF A SUPPORT MEMBER COMPRISING HYDROXYLATING THE METAL SURFACE, COATING THE HYDROXYLATED METAL SURFACE WITH A FILM OF A SOLUTION OF A METAL ESTER IN AN ORGANIC SOLVENT, THE ESTER HAVING THE FORMULA (RO)4M, WHEREIN R IS A MONOVALENT HYDROCARBON RADICAL SELECTED FROM THE GROUP CONSISTING OF PHENYL, TOLYL, XYLYL AND ALIPHATIC RADICALS HAVING FROM 1 TO 8 CARBON ATOMS AND M IS A METAL SELECTED FROM THE GROUP CONSISTING OF TITANIUM AND ZIRCONIUM, SAID SOLUTION CONTAINING SUFFICIENT METAL ESTER TO DEPOSIT AN AMOUNT OF SUCH ESTER ON SAID HYDROXYLATED SURFACE EQUIVALENT TO THAT DEPOISTED BY CONTACTING THE PLATE WITH AN ABOUT 0.1 TO ABOUT 10 WEIGHT PERCENT SOLUTION FOR A PERIOD OF TIME UP TO APPROXIMATELY 5 MINUTES, HYDROLYZING AND CONDENSING SAID ESTER ON SAID HYDROXYLATED METAL SURFACE WHILE REACTING SAID ESTER WITH THE HYDROXYL GROUPS OF THE HYDROXYLATED METAL SURFACE, SAID REACTION PRODUCT BEING HYDROPHILIC, SUBSTANTIALLY FREE OF OXIDES OF M AND SUBSTANTIALLY NON-SUSCEPTIVLE TO FURTHER HYDROLYSIS, AND SUBSEQUENTLY APPLYING A LAYER OF LIGHTSENSITIVE MATERIAL OVER SAID REACTION PRODUCT.
Claim 3
Dependent Claim 40 words
A PROCESS AS CLAIMED IN CLAIM 1 FURTHER INCLUDING THE STEPS OF EXPOSING PREDETERMINED AREAS OF SAID LIGHTSENSITIVE COMPOUND TO LIGHT, AND THEN REMOVING FROM THE PLATE SELECTED AREAS OF SUCH LIGHT-SENSITIVE COMPOUND TO RENDER THE PLATE READY FOR PRINTING.

References Cited (Backward Citations)

US2147778A Cited
US2766688A Cited
US2768907A Cited
US2785098A Cited
US2811426A Cited
US2983221A Cited
US3061483A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1969-01-24 1969-07-26 1970-01-25 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1973-01-24 1973-07-26 1974-01-25 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1977-01-24 1977-07-26 1978-01-25 $7700.00 Window Closed / Lapsed

Assigned Categories & Tags

No categories assigned to this patent yet.

Assign Category Tag