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US 4,565,761 AGranted
Electrophotographic process utilizing an azulenium salt-containing photosensitive member
AssigneeCanon Kabushiki Kaisha
InventorsKazuharu Katagiri, Yoshihiro Oguchi, Yoshio Takasu
Life of this patent
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Abstract
An electrophotographic process involving charging and exposing to light a radiation sensitive organic thin film comprising a compound which has at least one nucleus of an azulenium salt.
Claims18
An electrophotographic process comprising the steps of:
- (a) charging an electrophotographic photosensitive member having a conductive substrate and a photosensitive layer containing a compound having at least one nucleus of an azulenium salt with charges of a positive or negative polarity,
- (b) imagewise exposing the charged photosensitive member to a pattern of light sufficient to produce an electrostatic latent image, and
- (c) developing the resulting latent image with a developer.
An electrophotographic process comprising the steps of:
- (a) charging an electrophotographic photosensitive member having a conductive substrate and a photosensitive layer containing a compound having at least one nucleus of an azulenium salt with charges of a positive or negative polarity,
- (b) exposing the charged photosensitive member by scanning with a laser beam emitted from a laser source, and
- (c) developing the resulting latent image with a developer.
An electrophotographic process of repeating at least twice the steps comprising:
- (a) charging an electrophotographic photosensitive member having a conductive substrate and a photosensitive layer containing a compound having at least one nucleus of an azulenium salt with charges of a positive or negative polarity,
- (b) exposing the charged photosensitive member to a pattern of light sufficient to produce an electrostatic latent image,
- (c) developing the resulting latent image with a developer, and
- (d) transferring the developed image onto a transfer copying medium.
1 more element
An electrophotographic process of repeating at least twice the steps comprising:
- (a) charging an electrophotographic photosensitive member having a conductive substrate and a photosensitive layer containing a compound having at least one nucleus of an azulenium salt with charges of a positive or negative polarity,
- (b) exposing the charged photosensitive member by scanning with a laser beam emitted from a laser source,
- (c) developing the resulting latent image with a developer, and
- (d) transferring the developed image onto a transfer copying medium.
1 more element
An electrophotographic process comprising the steps of:
- (a) charging an electrophotographic photosensitive member having a conductive substrate and two photosensitive layers of laminate structure comprising (1) a charge generation layer containing a compound having at least one nucleus of an azulenium salt and (2) a charge transport layer with charges of a positive or negative polarity,
- (b) exposing the charge photosensitive member to a pattern of light sufficient to produce an electrostatic latent image, and
- (c) developing the resulting latent image with a developer.
An electrophotographic process comprising the steps of:
- (a) charging an electrophotographic photosensitive member having a conductive substrate and two photosensitive layers of laminate structure comprising (1) a charge generation layer containing a compound having at least one nucleus of an azulenium salt and (2) a charge transport layer with charges of a positive or negative polarity,
- (b) exposing the charged photosensitive member by scanning with a laser beam emitted from a laser source, and
- (c) developing the resulting latent image with a developer.
An electrophotographic process of repeating at least twice the steps comprising:
- (a) charging an electrophotographic photosensitive member having a conductive substrate and two photosensitive layers of laminate structure comprising (1) a charge generation layer containing a compound having at least one nucleus of an azulenium salt and (2) a charge transport layer with charges of a positive or negative polarity,
- (b) exposing the charged photosensitive member to a pattern of light sufficient to produce an electrostatic latent image,
- (c) developing the resulting latent image with a developer, and
- (d) transferring the developed image onto a transfer copying medium.
1 more element
An electrophotographic process of repeating at least twice the steps comprising:
- (a) charging an electrophotographic photosensitive member having a conductive substrate and two photosensitive layer of laminate structure comprising (1) a charge generation layer containing a compound having at least one nucleus of an azulenium salt and (2) a charge transport layer with charges of a positive or negative polarity,
- (b) exposing the charged photosensitive member by scanning with a laser beam emitted from a laser source,
- (c) developing the resulting latent image with a developer, and
- (d) transferring the developed image onto a transfer copying medium.
1 more element
Dependencies are inferred from the claim text.