Claims
- 1. An electrophotographic lithographic element produced by a process comprising an electrophotographically imaging a lithographic printing plate precursor comprising a conductive support having provided thereon at least one photoconductive layer containing photoconductive zinc oxide and a resin binder followed by subjecting said photoconductive layer to an oil-desensitization treatment, wherein said resin binder comprises a resin containing at least one functional group per molecule thereof capable of forming at least one hydroxyl group upon being decomposed by said oil-desensitization treatment, wherein said resin contains at least one functional group per molecule thereof represented by formula (I):
- --O--L (I)
- wherein L represents ##STR14## wherein R.sub.1, R.sub.2, and R.sub.3 each represents a hydrogen atom, a hydrocarbon group, or --O--R', wherein R' represents a hydrocarbon group; X represents a sulfur atom or an oxygen atom; Y.sub.1 represents a substituted straight chain or branched chain alkyl group having 1 to 6 carbon atoms; Y.sub.2 represents a hydrocarbon group; and Z represents an oxygen atom, a sulfur atom or -NH- or wherein said resin contains at least one functional group in which at least two hydroxyl groups spaced sterically close together are protected with one protective group.
- 2. An electrophotographic lithographic element as in claim 1, wherein R.sub.1, R.sub.1, and R.sub.3 each represents a hydrogen atom, a substituted or unsubstituted straight chain or branched chain alkyl group having from 1 to 18 carbon atoms, a substituted or unsubstituted alicyclic group, a substituted or unsubstituted aralkyl group having from 7 to 12 carbon atoms, a substituted or unsubstituted aryl group, or --O--R', wherein R' represents a substituted or unsubstituted straight chain or branched chain alkyl group having from 1 to 18 carbon atoms, a substituted or unsubstituted alicyclic group, a substituted or unsubstituted aralkyl group having from 7 to 12 carbon atoms, or a substituted or unsubstituted aryl group; Y.sub.1 and Y.sub.2 each represents a substituted or unsubstituted straight chain or branched chain alkyl group having from 1 to 6 carbon atoms, a substituted or unsubstituted aralkyl group having from 7 to 9 carbon atoms, or a substituted or unsubstituted aryl group having from 6 to 12 carbon atoms.
- 3. An electrophotographic lithographic element as in claim 2, wherein said resin is prepared by polymerizing at least one monomer containing at least one functional group of formula (I) or copolymerizing such a monomer with other copolymerizable monomers.
- 4. An electrophotographic lithographic element as in claim 3, wherein said monomer containing at least one functional group of formula (I) is represented by formula (II) ##STR15## wherein X' represents ##STR16## an aromatic group, or a heterocyclic group, wherein Q.sub.1, Q.sub.2, Q.sub.3, and Q.sub.4 each represents a hydrogen atom, a hydrocarbon group, or the group --Y'--O--L in formula (II); b.sub.1 and b.sub.2 each represents a hydrogen atom, a hydrocarbon group, or the group --Y'--O--L in formula (II); and n represents an integer of from 0 to 18; Y' represents a carbon-carbon bond linking X' and --O--L; L is as defined in claim 1; and a.sub.1 and a.sub.2 each represents a hydrogen atom, a hydrocarbon group, a hydroxyl group, or --COO--W, wherein W represents an alkyl, alkenyl, aralkyl, alicyclic, or aromatic group having from 1 to 18 carbon which may be substituted with a group containing the group --O--L.
- 5. An electrophotographic lithographic element as in claim 4, wherein Y' is composed of one or more of ##STR17## wherein b.sub.3, b.sub.4, and b.sub.5 each has the same meaning as b.sub.1 and b.sub.2 of claim 5.
- 6. An electrophotographic lithographic element as in claim 3, wherein said monomer containing at least one functional group of formula (I) is present in an amount of from 0.5 to 99.5% by weight based on the total weight of the polymer.
- 7. An electrophotographic lithographic element as in claim 3, wherein said monomer containing at least one functional group of formula (I) is present in an amount of from 1 to 99% by weight based on the total weight of the polymer.
- 8. An electrophotographic lithographic element as in claim 1, wherein said resin has a molecular weight of from 10.sup.3 to 10.sup.6.
- 9. An electrophotographic lithographic element as in claim 1, wherein said resin has a molecular weight of from 5.times.10.sup.3 to 5.times.10.sup.5.
- 10. An electrophotographic lithographic element as in claim 1, wherein said functional group is selected from a group represented by formula (III) ##STR18## wherein R.sub.1 and R.sub.2 each represents a hydrogen atom, a hydrocarbon group, or --O--R', wherein R' represents a hydrocarbon group; and Z represents ##STR19## wherein R"' may be the same or different and represents a hydrogen atom or a hydrocarbon group and n is an integer of 1, 2 or 3; or a linking group composed of at least one ##STR20## wherein R"' is as defined above, provided that the number of atoms existing between the two oxygen atoms in the formula does not exceed 5, a group represented by formula (IV) ##STR21## wherein Z is the same as defined above and a group represented by formula (V) ##STR22## wherein R.sub.1, R.sub.2, and Z are the same as defined above.
- 11. An electrophotographic lithographic element as in claim 10, wherein R.sub.1 and R.sub.2 each represents a hydrogen atom, a substituted or unsubstituted alkyl group having from 1 to 12 carbon atoms, a substituted or unsubstituted aralkyl group having, from 7 to 9 carbon atoms, an alicyclic group having from 5 to 7 carbon atoms, a substituted or unsubstituted aryl group, or --O--R', wherein R' represents a substituted or unsubstituted alkyl group having from 1 to 12 carbon atoms, a substituted or unsubstituted aralkyl group having from 7 to 9 carbon atoms, an alicyclic group having from 5 to 7 carbon atoms, or a substituted or unsubstituted aryl group.
- 12. An electrophotographic lithographic element as in claim 1, wherein said resin is prepared by protecting two hydroxyl groups of a polymer, said hydroxyl groups being spaced sterically close together, with a protective group.
- 13. An electrophotographic lithographic element as in claim 1, wherein said resin is prepared by polymerizing at least one monomer containing two hydroxyl groups spaced sterically close together which have previously been protected with one protective group, or copolymerizing such a monomer with other copolymerizable monomers.
- 14. An electrophotographic lithographic printing plate precursor as in claim 1, wherein said resin comprises from 0.1 to 100% by weight of a monomer unit containing at least one functional group in which at least two hydroxyl groups spaced sterically close together are protected with one protective group.
- 15. An electrophotographic lithographic element as in claim 1, wherein said resin comprises from 0.5 to 100% by weight of a monomer unit containing at least one functional group in which at least two hydroxyl groups spaced sterically close together are protected with one protective group.
- 16. An electrophotographic lithographic element as in claim 1, wherein said resin has a molecular weight of from 10.sup.3 to 10.sup.6.
- 17. An electrophotographic lithographic element as in claim 1, wherein said resin has a molecular weight of from 5.times.10.sup.3 to 5.times.10.sup.5.
- 18. An electrophotographic lithographic element as in claim 1, wherein said resin is present in an amount of from 1 to 80% by weight based on the total weight of the resin binder.
- 19. An electrophotographic lithographic element as in claim 1, wherein said resin is present in an amount of from 5 to 40% by weight based on the total weight of the resin binder.
- 20. An electrophotographic lithographic element as in claim 1, wherein said resin is present in an amount of from 3 to 30% by weight based on the total weight of the resin binder.
- 21. An electrophotographic lithographic element as in claim 1, wherein said resin binder is present in an amount of from 10 to 60 parts by weight per 100 parts by weight of photoconductive zinc oxide.
- 22. An electrophotographic lithographic element as in claim 1, wherein said resin binder is present in an amount of from 15 to 30 parts by weight per 100 parts by weight of photoconductive zinc oxide.
- 23. An electrophotographic lithographic element as in claim 1, wherein Y.sub.1 represents a trichloromethyl group, a trifluoromethyl group, a methoxymethyl group, a phenoxymethyl group, a 2,2,2-trifluoroethyl group or a hexafluoro-isopropyl group.
- 24. An electrophotographic lithographic element as in claim 1, wherein Y.sub.1 represents a substituted phenyl group having 6 to 12 carbon atoms.
- 25. An electrophotographic lithographic element as in claim 24, wherein the substituted phenyl group is selected from the group consisting of a nitrophenyl group, a cyanophenyl group, a methanesulfonylphenyl group, a methoxyphenyl group, a butoxyphenyl group, a chlorophenyl group, a dichlorophenyl group and a trifluoromethylphenyl group.
- 26. An electrophotographic lithographic element as in claim 1, wherein L represents ##STR23##
- 27. An electrophotographic lithographic element as in claim 1, wherein L represents --CO--Y.sub.1.
- 28. A method for preparing a lithographic printing plate which comprises electrophotographically forming an image on an electrographic lithographic printing plate precursor and subjecting the printing plate precursor to an oil desensitization treatment, said electrophotographic lithographic printing plate precursor comprising a conductive support having provided thereon at least one photoconductive layer containing photoconductive zinc oxide and a resin binder, wherein said resin binder comprises a resin having a functional group which is capable of forming a hydroxyl group upon decomposition by the oil-desensitization treatment, wherein said resin contains at least one functional group per molecule thereof represented by formula (I):
- --O--L (I)
- wherein L represents ##STR24## wherein R.sub.1, R.sub.2, and R.sub.3 each represents a hydrogen atom, a hydrocarbon group, or --O--R', wherein R' represents a hydrogen group; X represents a sulfur atom or an oxygen atom; Y.sub.1 represents a substituted straight chain or branched chain alkyl group having 1 to 6 carbon atoms; Y.sub.2 represents a hydrocarbon group; and Z represents an oxygen atom, a sulfur atom or -NH- or wherein said resin contains at least one functional group in which at least two hydroxyl groups spaced sterically close together are protected with one protective group.
- 29. A method for preparing an electrophotographic lithographic element as in claim 18, wherein R.sub.1, R.sub.2 and R.sub.3 each represents a hydrogen atom a substituted or unsubstituted straight chain or branched chain alkyl group having from 1 to 18 carbon atoms, a substituted or unsubstituted alicylic group, a substituted or unsubstituted aralkyl group having from 7 to 12 carbon atoms, a substituted or unsubstituted aryl group, or --O--R', wherein R' represents a substituted or unsubstituted straight chain or branched chain alkyl group having 1 to 18 carbon atoms, a substituted or unsubstituted aralkyl group having from 7 to 12 carbon atoms, or a substituted or unsubstituted aryl group; Y.sub.1 and Y.sub.2 each represents a substituted or unsubstituted straight chain or branched chain alkyl group having from 1 to 6 carbon atoms, a substituted or unsubstituted aralkyl group having from 7 to 9 carbon atoms, or a substituted or unsubstituted aryl group having from 6 to 12 carbon atoms.
- 30. A method for preparing an electrophotographic lithographic element as in claim 18, wherein said resin is prepared by polymerizing at least one monomer containing at least one functional group of formula (I) or copolymerizing such a monomer with other copolymerizable monomers.
- 31. A method for preparing an electrophotographic lithographic element as in claim 30, wherein said monomer containing at least one functional group of formula (I) is represented by formula (II) ##STR25## wherein X' represents ##STR26## an aromatic group, or a heterocyclic group, wherein Q.sub.1, Q.sub.2, Q.sub.3 and Q.sub.4 each represents a hydrogen atom, a hydrocarbon group, or the group --Y'--O--L in formula (II); b.sub.1 and b.sub.2 each represents a hydrogen atom, a hydrocarbon group, or the group --Y'--O--L in formula (11); and n represents an integer of from 0 to 18; Y' represents a carbon-carbon bond linking X' and --O--L; L is as defined in claim 1; and a.sub.1 and a.sub.2 each represents a hydrogen atom, a hydrocarbon group, a hydroxyl group, or --COO--W, wherein W represents an alkyl, alkenyl, aralkyl, alicylic, or aromatic group having from 1 to 18 carbon which may be substituted with a group containing the group --O--L.
- 32. A method for preparing an electrophotographic lithographic element as in claim 31, wherein Y' is composed of one or more of ##STR27## wherein b.sub.3, b.sub.4 and b.sub.5 each has the same meaning as b.sub.1 and b.sub.2 of claim 31.
- 33. A method for preparing an electrophotographic lithographic element as in claim 30, wherein said monomer containing at least one functional group of formula (I) is present in an amount of from 0.5 to 99.5% by weight based on the total weight of the polymer.
- 34. A method for preparing an electrophotographic lithographic element as in claim 30, wherein said monomer containing at least one functional group of formula (I) is present in an amount of from 1 to 99% by weight based on the total weight of the polymer.
- 35. An electrophotographic lithographic element as in claim 28, wherein said resin has a molecular weight of from 10.sup.3 to 10.sup.6.
- 36. A method for preparing an electrophotographic lithographic element as in claim 18, wherein said resin has a molecular weight of from 5.times.10.sup.3 to 5.times.10.sup.5.
- 37. A method for preparing an electrophotographic lithographic element as in claim 28, wherein said functional group is selected from a group represented by formula (III) ##STR28## wherein R.sub.1 and R.sub.2 each represents a hydrogen atom, a hydrocarbon group, or --O--R', wherein R' represents a hydrocarbon group; and Z represents ##STR29## wherein R"' may be the same or different and represents a hydrogen atom or a hydrocarbon group and n is an integer of 1, 2 or 3; or a linking group composed of at least one ##STR30## wherein R"' is as defined above, provided that the number of atoms existing between the two oxygen atoms in the formula does not exceed 5, a group represented by formula (IV) ##STR31## wherein Z is the same as defined above and a group represented by formula (V) ##STR32## wherein R.sub.1, R.sub.2 and Z are the same as defined above.
- 38. A method for preparing an electrophotographic lithographic element as in claim 37, wherein R.sub.1 and R.sub.2 each represents a hydrogen atom, a substituted or unsubstituted alkyl group having from 1 to 12 carbon atoms, a substituted or unsubstituted aralkyl group having from 7 to 9 carbon atoms, an alicylic group having from 5 to 7 carbon atoms, a substituted or unsubstituted aryl group, or --O--R', wherein R' represents a substituted or unsubstituted alkyl group having from 1 to 12 carbon atoms, a substituted or unsubstituted aralkyl group having from 7 to 9 carbon atoms, an alicylic group having from 5 to 7 carbon atoms, or a substituted or unsubstituted aryl group.
- 39. A method for preparing an electrophotographic lithographic element as in claim 28, wherein said resin is prepared by protecting two hydroxyl groups of a polymer, said hydroxyl groups being spaced sterically close together, with a protective group.
- 40. A method for preparing an electrophotographic lithographic element as in claim 28, wherein said resin is prepared by polymerizing at least one monomer containing two hydroxyl groups spaced sterically close together which have previously been protected with one protective group, or copolymerizing such a monomer with other copolymerizable monomers.
- 41. A method for preparing an electrophotographic lithographic element as in claim 28, wherein said resin comprises from 0.1 to 100% by weight of a monomer unit containing at least one functional group in which at least two hydroxyl groups spaced sterically close together are protected with one protective group.
- 42. A method for preparing an electrophotographic lithographic element as in claim 28, wherein said resin comprises from 0.5 to 100% by weight of a monomer unit containing at least one functional group in which at least two hydroxyl groups spaced sterically close together are protected with one protective group.
- 43. A method for preparing an electrophotographic lithographic element as in claim 28, wherein said resin has a molecular weight of from 10.sup.3 to 10.sup.6.
- 44. A method for preparing an electrophotographic lithographic element as in claim 28, wherein said resin has a molecular weight of from 5.times.10.sup.3 to 5.times.10.sup.5.
- 45. A method for preparing an electrophotographic lithographic element as in claim 28, wherein said resin is present in an amount of from 1 to 80% by weight based on the total weight of the resin binder.
- 46. A method for preparing an electrophotographic lithographic element as in claim 28, wherein said resin is present in an amount of from 5 to 40% by weight based on the total weight of the resin binder.
- 47. A method for preparing an electrophotographic lithographic element as in claim 28, wherein said resin is present in an amount of from 3 to 30% by weight based on the total weight of the resin binder.
- 48. A method for preparing an electrophotographic lithographic element as in claim 28, wherein said resin binder is present in an amount of from 10 to 60 parts by weight per 100 parts by weight of photoconductive zinc oxide.
- 49. A method for preparing an electrophotographic lithographic element as in claim 28, wherein said resin binder is present in an amount of from 15 to 30 parts by weight per 100 parts by weight of photoconductive zinc oxide.
- 50. A method for preparing an electrophotographic lithographic element as in claim 28, wherein Y.sub.1 represents a trichloromethyl group, a trifluoromethyl group, a methoxymethyl group, a phenoxymethyl group, a 2,2,2-trifluoroethyl group or a hexafluoro-isopropyl group.
- 51. A method for preparing an electrophotographic lithographic element as in claim 28, wherein Y.sub.1 represents a substituted phenyl group having 6 to 12 carbon atoms.
- 52. A method for preparing an electrophotographic lithographic element as in claim 51, wherein the substituted phenyl group is selected from the group consisting of a nitrophenyl group, a cyanophenyl group, a methanesulfonylphenyl group, a methoxyphenyl group, a butoxyphenyl group, a chlorophenyl group, a dichlorophenyl group and a trifluoromethylphenyl group.
- 53. A method for preparing an electrophotographic lithographic element as in claim 28, wherein L represents ##STR33##
- 54. A method for preparing an electrophotographic lithographic element as in claim 28, wherein L represents --CO--Y.sub.1.
Priority Claims (2)
Number |
Date |
Country |
Kind |
61-37321 |
Feb 1986 |
JPX |
|
61-52364 |
Mar 1986 |
JPX |
|
Parent Case Info
This is a continuation of application Ser. No. 07,/017,408 filed Feb. 24, 1987, now abandoned.
US Referenced Citations (1)
Number |
Name |
Date |
Kind |
4792511 |
Kato et al. |
Dec 1988 |
|
Continuations (1)
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Number |
Date |
Country |
Parent |
17408 |
Feb 1987 |
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