Method for evaluating electrophotographic photoconductor and the evaluation device, and method for reusing electrophotographic photoconductor
AssigneeRicoh Company, Ltd.
InventorsJunichi Yamazaki, Shigemitsu Nakatsugawa, Kenji Maeda
Life of this patent
Estimating the term…
Abstract
A method for evaluating an electrophotographic photoconductor in terms of filming occurrence is provided that comprises irradiating UV rays having a wavelength of 200 nm to 420 nm onto the electrophotographic photoconductor and measuring fluorescence emitted from the electrophotographic photoconductor.
Claims17
A method for evaluating an electrophotographic photoconductor in terms of filming occurrence, the electrophotographic photoconductor having an outermost layer comprising a charge transport substance which emits fluorescence upon irradiation of UV rays in an amount of 30% by mass or more, comprising:
- irradiating UV rays having a wavelength of 200 nm to 420 nm onto the electrophotographic photoconductor, and
- measuring fluorescence emitted from the charge transport substance in the outermost layer of the electrophotographic photoconductor.
A device for evaluating an electrophotographic photoconductor in terms of filming occurrence on the electrophotographic photoconductor, the electrophotographic photoconductor having an outermost layer comprising a charge transport substance which emits fluorescence upon irradiation of UV rays in an amount of 30% by mass or more, comprising at least:
- an irradiation unit configured to irradiate UV rays having a wavelength of 200 nm to 420 nm onto the electrophotographic photoconductor, and
- a measuring unit configured to measure fluorescence emitted from the charge transport substance in the outermost layer of the electrophotographic photoconductor.
A method for reusing an electrophotographic photoconductor, the electrophotographic photoconductor having an outermost layer comprising a charge transport substance which emits fluorescence upon irradiation of UV rays in an amount of 30% by mass or more, comprising:
- evaluating reusability of a used electrophotographic photoconductor, and
- selecting and reusing a usable electrophotographic photoconductor,
- wherein the electrophotographic photoconductor is evaluated as to the reusability by a method for evaluating an electrophotographic photoconductor in terms of filming occurrence, which comprises irradiating UV rays having a wavelength of 200 nm to 420 nm onto the electrophotographic photoconductor and measuring fluorescence emitted from the charge transport substance in the outermost layer of the electrophotographic photoconductor.
An image forming method, comprising at least:
- forming an electrostatic latent image on an electrophotographic photoconductor, the electrophotographic photoconductor having an outermost layer comprising a charge transport substance which emits fluorescence upon irradiation of UV rays in an amount of 30% by mass or more,
- developing the electrostatic latent image using a toner to form a visible image,
- transferring the visible image onto a recording medium, and
- fixing the transferred visible image on the recording medium,
- wherein the electrophotographic photoconductor is one evaluated to be usable by a method for reusing an electrophotographic photoconductor, comprising:
- evaluating reusability of a used electrophotographic photoconductor, and
- selecting and reusing a usable electrophotographic photoconductor,
- wherein the reusability is evaluated in terms of filming occurrence by irradiating UV rays having a wavelength of 200 nm to 420 nm onto the electrophotographic photoconductor and measuring fluorescence emitted from the charge transport substance in the outermost layer of the electrophotographic photoconductor.
Dependencies are inferred from the claim text.