Electrophotographic photoreceptor, electrophotographic cartridge, image forming apparatus, and charge transport substance
The present invention relates to an electrophotographic photoreceptor comprising a conductive support and a photosensitive layer disposed thereover, wherein the photosensitive layer comprises a compound represented by general formula (1) and palladium, the photosensitive layer having a palladium content of 0.01-50 ppm.
1. A charge transport substance, comprising:
a compound and
palladium,
wherein a palladium content is 0.01-150 ppm, and
the compound is of formula (1):
wherein Ar 1 to Ar 5 each independently represent an aryl group which optionally has an alkyl or alkoxy group,
Ar 6 to Ar 9 each independently represent a 1,4-phenylene group which optionally has a substituent, and
m and n each independently represent an integer of 1-2.
2. An electrophotographic photoreceptor, comprising:
a conductive support and,
a photosensitive layer disposed thereover, the photosensitive layer comprising a charge transport substance,
wherein the charge transport substance comprises a compound and palladium, the charge transport substance having a palladium content of 0.01-150 ppm, and
the compound is of formula (1):
wherein Ar 1 to Ar 5 each independently represent an aryl group which optionally has a substituent.
Ar 6 to Ar 9 each independently represent a 1,4-phenylene group which optionally has a substituent, and
m and n each independently represent an integer of 1 to 3.
3. The electrophotographic photoreceptor according to claim 2 , wherein the photosensitive layer comprises a binder resin, the binder resin having a viscosity-average molecular weight of 40,000-100,000.
4. The electrophotographic photoreceptor according to claim 2 wherein:
a content of a residual halogenated solvent in the photosensitive layer is 1.0 mg/g or less, and
a content of a residual halogen-free solvent in the photosensitive layer is 0.05-20.0 mg/g.
5. The electrophotographic photoreceptor according to claim 2 , wherein the compound of formula (1) is present in the photosensitive layer in an amount of 20-50 parts by mass per 100 parts by mass of a binder resin in the photosensitive layer.
6. The electrophotographic photoreceptor according to claim 2 , wherein in formula (1),
Ar 1 to Ar 5 each independently are an aryl group which optionally has an alkyl or alkoxy group,
Ar 6 to Ar 9 each independently are a 1,4-phenylene group which optionally has a substituent, and
m and n are 1.
7. The electrophotographic photoreceptor according to claim 2 , wherein the compound of formula (1) has been purified with an adsorbent.
8. The electrophotographic photoreceptor according to claim 2 , wherein the electrophotographic photoreceptor is suitable for use in a full-color image forming apparatus.
9. An electrophotographic cartridge, comprising:
the electrophotographic photoreceptor according to claim 2 ; and
at least one selected from the group consisting of
a charging device configured to charge the electrophotographic photoreceptor,
an exposure device configured to expose the charged electrophotographic photoreceptor to light to form an electrostatic latent image, and
a developing device configured to develop the electrostatic latent image formed in the surface of the electrophotographic photoreceptor.
10. A full-color image forming apparatus, comprising:
the electrophotographic photoreceptor according to claim 2 ;
a charging device configured to charge the electrophotographic photoreceptor;
an exposure device configured to expose charged electrophotographic photoreceptor to light to form electrostatic latent image; and
a developing device configured to develop the electrostatic latent image formed in the surface of the electrophotographic photoreceptor.
11. An electrophotographic photoreceptor, comprising:
a conductive support and
a photosensitive layer disposed thereover,
wherein the photosensitive layer comprises a compound and palladium, the photosensitive layer having a palladium content of 0.01-50 ppm, and
the compound is of formula (1):
wherein Ar 1 to Ar 5 each independently represent an aryl group which optionally has a substituent,
Ar 6 to Ar 9 each independently represent a 1,4-phenylene group which optionally has a substituent, and
m and n each independently represent an integer of 1 to 3.
12. The electrophotographic photoreceptor according to claim 11 , wherein the photosensitive layer comprises a binder resin, the binder resin having a viscosity-average molecular weight of 40,000-100,000.
13. The electrophotographic photoreceptor according to claim 11 , wherein:
a content of a residual halogenated solvent in the photosensitive layer is 1.0 mg/g or less, and
a content of a residual halogen-free solvent in the photosensitive layer is 0.05-20.0 mg/g.
14. The electrophotographic photoreceptor according to claim 11 , wherein the compound of formula (1) is present in the photosensitive layer in an amount of 20-50 parts by mass per 100 parts by mass of a binder resin in the photosensitive layer.
15. The electrophotographic photoreceptor according to claim 11 , wherein in formula (1),
Ar 1 to Ar 5 each independently are an aryl group which optionally has an alkyl or alkoxy group,
Ar 6 to Ar 9 each independently are a 1,4-phenylene group which optionally has a substituent, and
m and n are 1.
16. The electrophotographic photoreceptor according to claim 11 , wherein the photosensitive layer comprises a polyarylate resin or a polycarbonate resin as a binder resin.
17. The electrophotographic photoreceptor according to claim 11 , wherein the compound of formula (1) has been purified with an adsorbent.
18. The electrophotographic photoreceptor according to claim 11 , wherein the electrophotographic photoreceptor is suitable for use in a full-color image forming apparatus.
19. An electrophotographic cartridge, comprising:
the electrophotographic photoreceptor according to claim 11 ; and
at least one selected from the group consisting of
a charging device configured to charge the electrophotographic photoreceptor,
an exposure device configured to expose the charged electrophotographic photoreceptor to light to form an electrostatic latent image, and
a developing device configured to develop the electrostatic latent image formed in the surface of the electrophotographic photoreceptor.
20. A full-color image following apparatus, comprising:
the electrophotographic photoreceptor according to claim 11 ;
a charging device configured to charge the electrophotographic photoreceptor;
an exposure device configured to expose the charged electrophotographic photoreceptor to light to form an electrostatic latent image; and
a developing device configured to develop the electrostatic latent image formed in the surface of the electrophotographic photoreceptor.