EP0409737A1
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Oxytitanium phthalocyanine, process for producing same and electrophotosensitive member using same
Assignee: Canon Inc
•
Filing: 1990-07-20
•
Granted: —
•
Expires: 2010-07-20
Abstract
Abstract Oxytitanium phthalocyanine having a crystal form characterized by main peaks specified by Bragg angles (2ϑ ± 0.2 degree) of 9.0 degrees, 14.2 degrees, 23.9 degrees and 27.1 degrees in X-ray diffraction pattern based on CuKα characteristic X-rays. The oxytitanium phthalocyanine crystal provides an electrophotosensitive member showing a high and stable photosensitivity for long-wavelength light as well as a stable chargeability even after photoirradiation.
Inventors
- 👤 Kazushi C/O Canon Kabushiki Kaisha Iuchi
- 👤 Hideyuki C/O Canon Kabushiki Kaisha Takai
- 👤 Hajime C/O Canon Kabushiki Kaisha Miyazaki
- 👤 Itaru C/O Canon Kabushiki Kaisha Yamazaki
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-09 21:12
CPC Classifications
G; G03; G03G; G03G5/00; G03G5/02; G03G5/04; G03G5/06; G03G5/0664; G03G5/0696; C; C09; C09B; C09B67/00; C09B67/0001; C09B67/0014; C09B67/0016; C09B67/0025; C09B67/0026
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
37 words
Oxytitanium phthalocyanine having a crystal form characterized by main peaks specified by Bragg angles (2ϑ ± 0.2 degree) of 9.0 degrees, 14.2 degrees, 23.9 degrees and 27.1 degrees in X-ray diffraction pattern based on CuKα characteristic X-rays.
Claim 2
Dependent Claim
37 words
Oxytitanium phthalocyanine having a crystal form characterized by main peaks specified by Bragg angles (2ϑ ± 0.2 degree) of 9.0 degrees, 14.2 degrees, 23.9 degrees and 27.1 degrees in X-ray diffraction pattern based on CuKα characteristic X-rays.
Claim 3
Dependent Claim
69 words
A process for producing oxytitanium phthalocyanine having a crystal form characterized by main peaks specified by Bragg angles (2ϑ ± 0.2 degree) of 9.0 degrees, 14.2 degrees, 23.9 degrees and 27.1 degrees in X-ray diffraction pattern based on CuKα characteristic X-rays, wherein amorphous oxytitanium phthalocyanine is treated with methanol and then subjected to milling with a solvent selected from the group consisting of ether, monoterpene hydrocarbons, and liquid paraffin.
Claim 4
Dependent Claim
69 words
A process for producing oxytitanium phthalocyanine having a crystal form characterized by main peaks specified by Bragg angles (2ϑ ± 0.2 degree) of 9.0 degrees, 14.2 degrees, 23.9 degrees and 27.1 degrees in X-ray diffraction pattern based on CuKα characteristic X-rays, wherein amorphous oxytitanium phthalocyanine is treated with methanol and then subjected to milling with a solvent selected from the group consisting of ether, monoterpene hydrocarbons, and liquid paraffin.
Claim 5
Dependent Claim
58 words
In an electrophotosensitive member comprising an electroconductive support and a photosensitive layer formed thereon, the improvement wherein the photosensitive layer comprises oxytitanium phthalocyanine having a crystal form characterized by main peaks specified by Bragg angles (2ϑ ± 0.2 degree) of 9.0 degrees, 14.2 degrees, 23.9 degrees and 27.1 degrees in X-ray diffraction pattern based on CuKα characteristic X-rays.
Claim 6
Dependent Claim
58 words
In an electrophotosensitive member comprising an electroconductive support and a photosensitive layer formed thereon, the improvement wherein the photosensitive layer comprises oxytitanium phthalocyanine having a crystal form characterized by main peaks specified by Bragg angles (2ϑ ± 0.2 degree) of 9.0 degrees, 14.2 degrees, 23.9 degrees and 27.1 degrees in X-ray diffraction pattern based on CuKα characteristic X-rays.
Claim 7
Dependent Claim
17 words
An electrophotosensitive member according to Claim 3, wherein the photosensitive layer is composed of a single layer.
Claim 8
Dependent Claim
29 words
An electrophotosensitive member according to Claim 3, wherein the photosensitive layer comprises a charge generation layer containing a charge-generating material and a charge transport layer containing a charge-transporting material.
Claim 9
Dependent Claim
22 words
An electrophotosensitive member according to Claim 3, wherein an intermediate layer is further formed between the electroconductive support and the photosensitive layer.
Claim 10
Dependent Claim
18 words
An electrophotosensitive member according to Claim 3, wherein a protective layer is further formed on the photosensitive layer.
Claim 11
Dependent Claim
95 words
In an electrophotosensitive member comprising an electroconductive support and a photosensitive layer formed thereon, the improvement wherein at least one device of a charger, a developing means and a cleaner is in combination with an photosensitive member comprising oxytitanium phthalocyanine having a crystal form characterized by main peaks specified by Bragg angles (2ϑ ± 0.2 degree) of 9.0 degrees, 14.2 degrees, 23.9 degrees and 27.1 degrees in X-ray diffraction pattern based on CuKα characteristic X-rays to be assembled into a single unit capable of attaching to or removing from a body of an electrophotographic apparatus.
Claim 12
Dependent Claim
95 words
In an electrophotosensitive member comprising an electroconductive support and a photosensitive layer formed thereon, the improvement wherein at least one device of a charger, a developing means and a cleaner is in combination with an photosensitive member comprising oxytitanium phthalocyanine having a crystal form characterized by main peaks specified by Bragg angles (2ϑ ± 0.2 degree) of 9.0 degrees, 14.2 degrees, 23.9 degrees and 27.1 degrees in X-ray diffraction pattern based on CuKα characteristic X-rays to be assembled into a single unit capable of attaching to or removing from a body of an electrophotographic apparatus.
Claim 13
Dependent Claim
95 words
In an electrophotographic apparatus comprising an electrophotosensitive member, a means for forming an electrostatic latent image, a means for developing the electrostatic latent image and a means for transferring the developed image to a transfer material; the improvement wherein the electrophotosensitive member comprises an electroconductive support and a photosensitive layer formed thereon, and wherein the photosensitive layer comprises oxytitanium phthalocyanine having a crystal form characterized by main peaks specified by Bragg angles (2ϑ ± 0.2 degree) of 9.0 degrees, 14.2 degrees, 23.9 degrees and 27.1 degrees in X-ray diffraction pattern based on CuKα characteristic X-rays.
Claim 14
Dependent Claim
95 words
In an electrophotographic apparatus comprising an electrophotosensitive member, a means for forming an electrostatic latent image, a means for developing the electrostatic latent image and a means for transferring the developed image to a transfer material; the improvement wherein the electrophotosensitive member comprises an electroconductive support and a photosensitive layer formed thereon, and wherein the photosensitive layer comprises oxytitanium phthalocyanine having a crystal form characterized by main peaks specified by Bragg angles (2ϑ ± 0.2 degree) of 9.0 degrees, 14.2 degrees, 23.9 degrees and 27.1 degrees in X-ray diffraction pattern based on CuKα characteristic X-rays.
Claim 15
Dependent Claim
80 words
A facsimile machine comprising: an electrophotographic apparatus comprising an electrophotosensitive member, wherein the electrophotosensitive member comprises an electroconductive support and a photosensitive layer formed thereon, and wherein the photosensitive layer comprises oxytitanium phthalocyanine having a crystal form characterized by main peaks specified by Bragg angles (2ϑ ± 0.2 degree) of 9.0 degrees, 14.2 degrees, 23.9 degrees and 27.1 degrees in X-ray diffraction pattern based on CuKα characteristic X-rays; and a receiving means for receiving image data from a remote terminal.
Claim 16
Dependent Claim
80 words
A facsimile machine comprising: an electrophotographic apparatus comprising an electrophotosensitive member, wherein the electrophotosensitive member comprises an electroconductive support and a photosensitive layer formed thereon, and wherein the photosensitive layer comprises oxytitanium phthalocyanine having a crystal form characterized by main peaks specified by Bragg angles (2ϑ ± 0.2 degree) of 9.0 degrees, 14.2 degrees, 23.9 degrees and 27.1 degrees in X-ray diffraction pattern based on CuKα characteristic X-rays; and a receiving means for receiving image data from a remote terminal.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.