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US 9,921,498 B2Granted
Electrophotographic photosensitive member, process cartridge, and electrophotographic apparatus
AssigneeCanon Kabushiki Kaisha
InventorsKunihiko Sekido, Masashi Nishi, Michiyo Sekiya, Kei Tagami
Life of this patent
Estimating the term…
Abstract
Provided is an electrophotographic photosensitive member including a support, an undercoat layer formed on the support, and a photosensitive layer formed on the undercoat layer, in which the undercoat layer contains a polymer of a composition containing a compound represented by the formula (1).
Claims5
An electrophotographic photosensitive member, comprising:
- a support;
- an undercoat layer formed on the support;
- and
- a photosensitive layer formed on the undercoat layer, wherein
- the undercoat layer contains a polymer of a composition containing a crosslinking agent, a resin having a polymerizable functional group and a compound represented by formula (1):
- where R1 represents a substituted or unsubstituted alkyl group having 1 to 6 carbon atoms in a main chain thereof, or a substituted or unsubstituted aryl group, the alkyl group or the aryl group having 2 or more polymerizable functional groups, and the polymerizable functional groups each comprise a hydroxy group, a thiol group, an amino group, or a carboxyl group;
- R2 represents a substituted or unsubstituted alkyl group having 1 to 6 carbon atoms in a main chain thereof, a group derived by substituting at least one CH2 in a main chain of a substituted or unsubstituted alkyl group having 3 to 6 carbon atoms in the main chain with an oxygen atom, a group derived by substituting at least one CH2 in a main chain of a substituted or unsubstituted alkyl group having 3 to 6 carbon atoms in the main chain with a sulfur atom, a group derived by substituting at least one CH2 in a main chain of a substituted or unsubstituted alkyl group having 3 to 6 carbon atoms in the main chain with NR3, a group derived by substituting at least one CH2 in a main chain of a substituted or unsubstituted alkyl group having 2 to 6 carbon atoms in the main chain with a carbonyl group, a group derived by substituting at least one C2H4 in a main chain of a substituted or unsubstituted alkyl group having 3 to 6 carbon atoms in the main chain with COO, a substituted or unsubstituted cyclic alkyl group having 3 to 6 carbon atoms in a main chain thereof, or a substituted or unsubstituted aryl group;
- R3 represents a hydrogen atom, or a substituted or unsubstituted alkyl group having 1 to 6 carbon atoms in a main chain thereof;
- a substituent of each of the alkyl group, the group derived by substituting at least one CH2 in the main chain of an alkyl group with an oxygen atom, a sulfur atom, NR3, or a carbonyl group, the group derived by substituting at least one C2H4 in the main chain of an alkyl group with COO, and the cyclic alkyl group comprises an alkyl group having 1 to 6 carbon atoms, benzyl group, alkoxycarbonyl group, or phenyl group that may be further substituted;
- a substituent of the aryl group comprises a halogen atom, a cyano group, a nitro group, or an alkyl group, alkoxy group, or alkoxycarbonyl group having 1 to 6 carbon atoms that may be further substituted;
- and
- A represents a structure represented by formula (2) or formula (3):
- where R4 to R13 each independently represent a hydrogen atom, a halogen atom, a cyano group, a nitro group, a substituted or unsubstituted alkyl group having 1 to 6 carbon atoms in a main chain thereof, or a substituted or unsubstituted aryl group, and
- a mass ratio between the compound represented by formula (1), and at least one of the crosslinking agent and the resin having a polymerizable functional group is from 100:50 to 100:250.
11 more elements
A process cartridge, comprising:
- an electrophotographic photosensitive member;
- and
- at least one unit selected from the group consisting of a charging unit, a developing unit, and a cleaning unit,
- the process cartridge integrally supporting the electrophotographic photosensitive member and the at least one unit,
- the process cartridge being removably mounted onto an electrophotographic apparatus, wherein
- the electrophotographic photosensitive member comprises:
- a support;
- an undercoat layer formed on the support;
- and
- a photosensitive layer formed on the undercoat layer, the undercoat layer containing a crosslinking agent, a resin having a polymerizable functional group and a polymer of a composition containing a compound represented by formula (1):
- where R1 represents a substituted or unsubstituted alkyl group having 1 to 6 carbon atoms in a main chain thereof, or a substituted or unsubstituted aryl group, the alkyl group or the aryl group having 2 or more polymerizable functional groups, and the polymerizable functional groups each comprise a hydroxy group, a thiol group, an amino group, or a carboxyl group;
- R2 represents a substituted or unsubstituted alkyl group having 1 to 6 carbon atoms in a main chain thereof, a group derived by substituting at least one CH2 in a main chain of a substituted or unsubstituted alkyl group having 3 to 6 carbon atoms in the main chain with an oxygen atom, a group derived by substituting at least one CH2 in a main chain of a substituted or unsubstituted alkyl group having 3 to 6 carbon atoms in the main chain with a sulfur atom, a group derived by substituting at least one CH2 in a main chain of a substituted or unsubstituted alkyl group having 3 to 6 carbon atoms in the main chain with NR3, a group derived by substituting at least one CH2 in a main chain of a substituted or unsubstituted alkyl group having 2 to 6 carbon atoms in the main chain with a carbonyl group, a group derived by substituting at least one C2H4 in a main chain of a substituted or unsubstituted alkyl group having 3 to 6 carbon atoms in the main chain with COO, a substituted or unsubstituted cyclic alkyl group having 3 to 6 carbon atoms in a main chain thereof, or a substituted or unsubstituted aryl group;
- R3 represents a hydrogen atom, or a substituted or unsubstituted alkyl group having 1 to 6 carbon atoms in a main chain thereof;
- a substituent of each of the alkyl group, the group derived by substituting at least one CH2 in the main chain of an alkyl group with an oxygen atom, a sulfur atom, NR3, or a carbonyl group, the group derived by substituting at least one C2H4 in the main chain of an alkyl group with COO, and the cyclic alkyl group comprises an alkyl group having 1 to 6 carbon atoms, benzyl group, alkoxycarbonyl group, or phenyl group that may be further substituted;
- a substituent of the aryl group comprises a halogen atom, a cyano group, a nitro group, or an alkyl group, alkoxy group, or alkoxycarbonyl group having 1 to 6 carbon atoms that may be further substituted;
- and
- A represents a structure represented by formula (2) or formula (3):
- where R4 to R13 each independently represent a hydrogen atom, a halogen atom, a cyano group, a nitro group, a substituted or unsubstituted alkyl group having 1 to 6 carbon atoms in a main chain thereof, or a substituted or unsubstituted aryl group, and
- a mass ratio between the compound represented by formula (1), and at least one of the crosslinking agent and the resin having a polymerizable functional group is from 100:50 to 100:250.
16 more elements
An electrophotographic apparatus, comprising at least:
- an electrophotographic photosensitive member;
- a charging unit;
- an exposing unit;
- a developing unit;
- and
- a transferring unit, wherein
- the electrophotographic photosensitive member comprises:
- a support;
- an undercoat layer formed on the support;
- and
- a photosensitive layer formed on the undercoat layer, the undercoat layer containing a crosslinking agent, a resin having a polymerizable functional group and a polymer of a composition containing a compound represented by formula (1):
- where R1 represents a substituted or unsubstituted alkyl group having 1 to 6 carbon atoms in a main chain thereof, or a substituted or unsubstituted aryl group, the alkyl group or the aryl group having 2 or more polymerizable functional groups, and the polymerizable functional groups each comprise a hydroxy group, a thiol group, an amino group, or a carboxyl group;
- R2 represents a substituted or unsubstituted alkyl group having 1 to 6 carbon atoms in a main chain thereof, a group derived by substituting at least one CH2 in a main chain of a substituted or unsubstituted alkyl group having 3 to 6 carbon atoms in the main chain with an oxygen atom, a group derived by substituting at least one CH2 in a main chain of a substituted or unsubstituted alkyl group having 3 to 6 carbon atoms in the main chain with a sulfur atom, a group derived by substituting at least one CH2 in a main chain of a substituted or unsubstituted alkyl group having 3 to 6 carbon atoms in the main chain with NR3, a group derived by substituting at least one CH2 in a main chain of a substituted or unsubstituted alkyl group having 2 to 6 carbon atoms in the main chain with a carbonyl group, a group derived by substituting at least one C2H4 in a main chain of a substituted or unsubstituted alkyl group having 3 to 6 carbon atoms in the main chain with COO, a substituted or unsubstituted cyclic alkyl group having 3 to 6 carbon atoms in a main chain thereof, or a substituted or unsubstituted aryl group;
- R3 represents a hydrogen atom, or a substituted or unsubstituted alkyl group having 1 to 6 carbon atoms in a main chain thereof;
- a substituent of each of the alkyl group, the group derived by substituting at least one CH2 in the main chain of an alkyl group with an oxygen atom, a sulfur atom, NR3, or a carbonyl group, the group derived by substituting at least one C2H4 in the main chain of an alkyl group with COO, and the cyclic alkyl group comprises an alkyl group having 1 to 6 carbon atoms, benzyl group, alkoxycarbonyl group, or phenyl group that may be further substituted;
- a substituent of the aryl group comprises a halogen atom, a cyano group, a nitro group, or an alkyl group, alkoxy group, or alkoxycarbonyl group having 1 to 6 carbon atoms that may be further substituted;
- and
- A represents a structure represented by formula (2) or formula (3):
- where R4 to R13 each independently represent a hydrogen atom, a halogen atom, a cyano group, a nitro group, a substituted or unsubstituted alkyl group having 1 to 6 carbon atoms in a main chain thereof, or a substituted or unsubstituted aryl group, and
- a mass ratio between the compound represented by formula (1), and at least one of the crosslinking agent and the resin having a polymerizable functional group is from 100:50 to 100:250.
17 more elements
Dependencies are inferred from the claim text.