Electroconductive member for electrophotography and quaternary ammonium salt
Provided is an electroconductive member for electrophotography in which movement of a quaternary ammonium salt toward the surface of a binder resin is suppressed and which exhibits a less reduction in electroconductivity through electrification. The electroconductive member for electrophotography comprises an electroconductive shaft core and a resin layer, and the resin layer comprises a binder resin and at least one selected from quaternary ammonium salts having structures represented by the formulae (1) to (8).
1. An electroconductive member for electrophotography, comprising:
an electroconductive shaft core; and
a resin layer-comprising a binder resin and at least one quaternary ammonium salt having a structure represented by one of formulae (1) to (8):
where n1 represents 2 or 3, X A represents a group having a structure represented by formula (9), and X B represents an electron-donating group or a hydrogen atom;
where R 1 to R 3 independently represent a hydrogen atom or a methyl group, R 4 and R 5 independently represent a methyl group, an ethyl group or a glycidyl group, X − represents an anion, and “a” represents 0 or 1;
where n2 represents 2 or 3, and X C represents a group having a structure represented by formula (10);
where R 6 to R 8 independently represent a hydrogen atom or a methyl group, R 9 and R 10 independently represent a methyl group, an ethyl group or a glycidyl group, X − represents an anion, and “b” represents 0 or 1;
where n3 and n5 independently represent 1 or 2, n4 represents 1 or 2, and X D and X E independently represent a group having a structure represented by formula (11);
where R 11 to R 13 independently represent a hydrogen atom or a methyl group, R 14 and R 15 independently represent a methyl group, an ethyl group or a glycidyl group, X − represents an anion, and “c” represents 0 or 1;
where n6 and n8 independently represent 1 or 2, n7 represents 1 or 2, and X F and X G independently represent a group having a structure represented by formula (12);
where R 16 to R 18 independently represent a hydrogen atom or a methyl group, R 19 and R 20 independently represent a methyl group, an ethyl group or a glycidyl group, X − represents an anion, and “d” represents 0 or 1;
where “e” represents 1 or 2, and X H and X I independently represent a group having a structure represented by formula (13);
where R 21 to R 23 independently represent a hydrogen atom or a methyl group, R 24 and R 25 independently represent a methyl group, an ethyl group or a glycidyl group, X − represents an anion, and “f” represents 2 or 3;
where “g” and “h” independently represent 2 or 3, and X J and X K independently represent a group having a structure represented by formula (14);
where R 26 to R 28 independently represent a hydrogen atom or a methyl group, R 29 represents a methyl group, an ethyl group or a glycidyl group, and X − represents an anion;
where “i”, “j”, and “k” independently represent 2 or 3, and X L and X M independently represent a group having a structure represented by formula (15);
where R 30 to R 32 independently represent a hydrogen atom or a methyl group, and X − represents an anion;
where R 33 to R 35 and R 40 to R 42 independently represent a hydrogen atom or a methyl group, R 36 to R 39 independently represent a methyl group, an ethyl group or a glycidyl group, “1” represents an integer of 2 to 12, and X − represents an anion.
2. An electroconductive member for electrophotography, comprising:
an electroconductive shaft core; and
a resin layer comprising a binder resin to which a quaternary ammonium salt is fixed, the binder resin being obtained from (i) a compound having at least two functional groups selected from the group consisting of a hydroxyl group, a mercapto group, an amino group and an acid anhydride group, and (ii) at least one quaternary ammonium salt having a structure represented by one of formulae (1) to (8), said quaternary ammonium salt being fixed by a reaction between the functional group in compound (i) and an epoxy group in quaternary ammonium salt (ii):
where n1 represents 2 or 3, X A represents a group having a structure represented by formula (9), and X B represents an electron-donating group or a hydrogen atom;
where R 1 to R 3 independently represent a hydrogen atom or a methyl group, R 4 and R 5 independently represent a methyl group, an ethyl group or a glycidyl group, X − represents an anion, and “a” represents 0 or 1;
where n2 represents 2 or 3, and X C represents a group having a structure represented by formula (10);
where R 6 to R 8 independently represent a hydrogen atom or a methyl group, R 9 and R 10 independently represent a methyl group, an ethyl group or a glycidyl group, X − represents an anion, and “b” represents 0 or 1;
where n3 and n5 independently represent 1 or 2, n4 represents 1 or 2, and X D and X E independently represent a group having a structure represented by formula (11);
where R 11 to R 13 independently represent a hydrogen atom or a methyl group, R 14 and R 15 independently represent a methyl group, an ethyl group or a glycidyl group, X − represents an anion, and “c” represents 0 or 1;
where n6 and n8 independently represent 1 or 2, n7 represents 1 or 2, and X F and X G independently represent a group having a structure represented by formula (12);
where R 16 to R 18 independently represent a hydrogen atom or a methyl group, R 19 and R 20 independently represent a methyl group, an ethyl group or a glycidyl group, X − represents an anion, and “d” represents 0 or 1;
where “e” represents 1 or 2, and X H and X I independently represent a group having a structure represented by formula (13);
where R 21 to R 23 independently represent a hydrogen atom or a methyl group, R 24 and R 25 independently represent a methyl group, an ethyl group or a glycidyl group, X − represents an anion, and “f” represents 2 or 3;
where “g” and “h” independently represent 2 or 3, and X J and X K independently represent a group having a structure represented by formula (14);
where R 26 to R 28 independently represent a hydrogen atom or a methyl group, R 29 represents a methyl group, an ethyl group or a glycidyl group, and X − represents an anion;
where “i”, “j”, and “k” independently represent 2 or 3, and X L and X M independently represent a group having a structure represented by formula (15);
where R 30 to R 32 independently represent a hydrogen atom or a methyl group, and X − represents an anion;
where R 33 to R 35 and R 40 to R 42 independently represent a hydrogen atom or a methyl group, R 36 to R 39 independently represent a methyl group, an ethyl group or a glycidyl group, “1” represents an integer of 2 to 12, and X − represents an anion.
3. An electroconductive member for electrophotography according to claim 2 , wherein the compound having two or more functional groups has an ethylene oxide structure.
4. A process cartridge, which is removably mounted onto a main body of an electrophotographic image forming apparatus, the process cartridge comprising the electroconductive member for electrophotography according to claim 3 .
5. A process cartridge according to claim 4 , wherein the process cartridge comprises the electroconductive member for electrophotography as at least one of a charging roller or a developing roller.
6. An electrophotographic image forming apparatus, comprising the electroconductive member for electrophotography according to claim 3 .
7. A process cartridge, which is removably mounted onto a main body of an electrophotographic image forming apparatus, the process cartridge comprising the electroconductive member for electrophotography according to claim 3 .
8. A process cartridge according to claim 7 , wherein the electroconductive member for electrophotography is at least one of a charging roller or a developing roller.
9. An electrophotographic image forming apparatus, comprising the electroconductive member for electrophotography according to claim 3 .
10. A process cartridge, which is removably mounted onto a main body of an electrophotographic image forming apparatus, the process cartridge comprising the electroconductive member for electrophotography according to claim 2 .
11. A process cartridge according to claim 10 , wherein the electroconductive member for electrophotography is at least one of a charging roller or a developing roller.
12. An electrophotographic image forming apparatus, comprising the electroconductive member for electrophotography according to claim 2 .
13. A process cartridge, which is removably mounted onto a main body of an electrophotographic image forming apparatus, the process cartridge comprising the electroconductive member for electrophotography according to claim 1 .
14. A process cartridge according to claim 13 , wherein the electroconductive member for electrophotography is at least one of a charging roller or a developing roller.
15. An electrophotographic image forming apparatus, comprising the electroconductive member for electrophotography according to claim 1 .