Ricoh Company, Ltd.

Takayuki Gotoh

Shuhei Watanabe

Takuroh Sone

Akihiro Iwamatsu

Hideyuki Kihara

Takashi Soma

Yohta Sakon

Naoki Nakamura

Masahiro Ohmori

Masanobu Gondoh

Shinji Nohsho

Kaori Toyama

Shohei Gohda

Ichiro Maeda

Takeshi Tada

A surface characteristics evaluation method for evaluating a surface characteristic of a painted surface including a glittering material, including: a multi-angle condition image acquisition step Sfor acquiring a multi-angle condition image including multi-angle conditions in a continuous manner by performing an image-capturing process to capture how a reflection condition of the painted surface changes when rotating an illumination deviceemitting light onto the painted surface, the image-capturing process being performed by the line scan camerawhile a sample P having the painted surface is moved in a certain direction; an in-plane chromaticity distribution acquisition step Sfor acquiring an in-plane chromaticity distribution of the painted surface from the multi-angle condition image acquired; and a surface characteristics evaluation step Sfor calculating particle characteristics S as surface characteristics evaluation values of the multi-angle conditions, on the basis of the in-plane chromaticity distribution acquired.

Surface characteristics evaluation method, surface characteristics evaluation apparatus, and surface characteristics evaluation program

An evaluation device includes a projector to project a pattern having an edge component onto an object, an imaging device to capture an image of the object, a reflective-property correction unit to correct an amount of change in shape of a virtual image of the pattern reflected in the object, using reflective-property data of a surface of the object, and an evaluation-value calculator to evaluate image clarity of the surface of the object based on the corrected amount of change. A computer-readable non-transitory recording medium storing a program for causing a computer to execute a method. The method includes correcting an amount of change in shape of a virtual image of the pattern reflected in the object based on image data that is obtained by capturing an object onto which a pattern having an edge component is projected, using reflective-property data of a surface of the object.

Evaluation device and recording medium storing evaluation program

A texture evaluation apparatus includes a projector, an imager, and an evaluator. The projector is configured to project a two-dimensional pattern having an edge element onto an object. The imager is configured to capture an image of a surface of the object. The evaluator is configured to calculate an amount of shape change of a virtual image of the two-dimensional pattern in the image, and evaluate texture of the object based on the amount of shape change and sensory evaluation information obtained in advance.

Texture evaluation apparatus, texture evaluation method, and computer-readable recording medium

A color measurement apparatus includes at least one illuminator, an imager, and circuitry. The circuitry is configured to normalize each pixel included in an imaging region of one of the spectral reflectance images of the measurement target irradiated with light at a specific illumination angle of the plurality of illumination angles, with one of the spectral reflectance images of the reference object irradiated with light at the specific illumination angle, for each of the plurality of illumination angles so as to generate normalized spectral reflectance images of the measurement target. The circuitry further calculates a numerical value of at least one color for each pixel of the normalized spectral reflectance images of the measurement target, for respective ones of the plurality of illumination angles, to measure color of the surface of the measurement target.

Color measurement apparatus and color information processing apparatus

An image forming apparatus includes an image carrier, a charging mechanism to charge a surface of the image carrier, an electrostatic latent image forming mechanism to form an electrostatic latent image on the surface of the image carrier, a developing mechanism to develop the electrostatic latent image formed on the surface of the image carrier into a toner image, a transfer mechanism to transfer the toner image on the surface of the image carrier to a transfer body, and a cleaning mechanism including a cleaning blade to clean a transfer residue toner adhering to the surface of the image carrier by contacting the surface of the image carrier. The cleaning blade includes a strip shaped elastic blade and a surface layer formed on an opposing surface of the strip shaped elastic blade opposite the surface of the image carrier.

Image forming apparatus and process cartridge

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Kanagawa, Japan

Takayuki Gotoh