The Yokohama Rubber Co., Ltd.

Fuji Xerox Co., Ltd.

Masahiko Miyamoto

Norihiko Nakahara

Gang Hou

Yoh Nishizawa

Tomoaki Mori

Taro Takahashi

Shinji Yamamoto

Yousuke Tsutsumi

Toshinori Nishimura

Hiroshi Saegusa

Hidemi Nukada

Nobuyuki Ichizawa

Koji Nakatani

Daisuke Haruyama

Ichiro Takegawa

Shu Yamada

Michito Kaneko

Yukiko Kamijo

Kazunori Ono

Shigeki Sakakibara

Michiko Aida

Masaharu Manishi

Kenji Inoue

Takeshi Iwanaga

Kenji Yao

Hirofumi Nakamura

Masahiro Iwasaki

Tomoko Suzuki

Takashi Yamada

Satoya Sugiura

Taketoshi Hoshizaki

Shigeru Fukuda

Kazuya Hongo

Taku Fukuhara

Hideya Katsuhara

Shigeto Hashiba

Koji Bando

Minami Izumi

Masayoshi Kogawa

Masaki Akie

Hideki Okamoto

Kozo Ota

Tetsuya Ezumi

Masaki Yamamoto

Eiji Kobayashi

Koko Tsuchiya

Kazuya Kanno

Hitoshi Indo

Naoto Ishii

A test sample of a vulcanized rubber material is placed under a preset placement condition in a fixing frame in a test tank having a predetermined ozone concentration, and digital image data is acquired by capturing at a fixed point, over time, with at least one camera device, images of a surface of the test sample that has been placed in the test tank; and determining a change in a surface state of the test sample between a plurality of points in time by analyzing, with a computation device, the image data that has been acquired. Such evaluation method for evaluating ozone deterioration of a vulcanized rubber material can accurately determine a change over time in ozone deterioration while reducing working man-hours.

Ozone deterioration evaluation method and evaluation system of vulcanized rubber material

A conveyor belt monitoring system includes an imaging device which sequentially images a longitudinal predetermined range of a conveyor belt in running from above the conveyor belt. Image data captured by the imaging device is displayed in a monitor, and then is sequentially input into a control unit as detection data. The control unit causes a meander suppressing device to reduce a meander width of the conveyor belt on the basis of the image data.

Conveyor belt monitoring system

A pneumatic fender monitoring system is provided. Image data captured by using at least one of a front view imaging device that successively images an external shape in a front view of a pneumatic fender used disposed between a vessel and a vessel or a side view imaging device that successively images the external shape in a side view of the pneumatic fender is successively input into a control unit and successively displayed on a monitor, and the control unit determines, on the basis of the image data, whether an amount of deformation of the external shape of the pneumatic fender is within a preset tolerance range or outside of a preset tolerance range.

Pneumatic fender monitoring system

Surface image data relating to an upper cover rubber is continuously and successively captured by a surface camera device and input to a computation device. Each piece of surface image data is stored in a database in association with data on the circumferential position of that surface image data on a conveyor belt and data on the time at which that surface image data was captured. An input unit is used to display any piece of surface image data on a monitor, register surface image data in which a predetermined defect is present on the surface of the upper cover rubber in the database as data to be monitored, and automatically register in the database surface image data having the same circumferential position data as the data to be monitored as related data to be monitored. Such monitoring system determines the state of damage of a cover rubber surface.

Monitoring system for conveyor belt

An electrophotographic photoreceptor includes a conductive support, a charge generation layer disposed on the conductive support, and a charge transport layer disposed on the charge generation layer. The charge generation layer includes a charge generating material and a vinyl copolymer. The vinyl copolymer includes a structural unit including a chlorine atom, a structural unit including an acyloxy group, and a structural unit including two or more carboxyl groups. The proportion of the structural unit including an acyloxy group to all of the structural units is 13.4 mol % or more and 20.0 mol % or less. The charge transport layer includes a charge transporting material and a binder resin.

Electrophotographic photoreceptor, process cartridge, and image forming apparatus

An image forming apparatus includes an electrophotographic photoreceptor having a photosensitive layer that includes at least one of a hindered phenol antioxidant and a benzophenone ultraviolet absorber, a charging device, an electrostatic latent image forming device, a developing device, and a transfer device that includes an intermediate transfer belt whose electric field dependence of a volume resistivity is 0.003 or less (log &#x3a9;&#xb7;cm)/V in a voltage range of from 500 V to 1,000 V, and transfers a toner image formed on a surface of the electrophotographic photoreceptor onto a recording medium through the intermediate transfer belt and erases charges from the surface of the electrophotographic photoreceptor by applying current to the electrophotographic photoreceptor after the toner image formed on the surface of the electrophotographic photoreceptor has been transferred onto the intermediate transfer belt.

Image forming apparatus and process cartridge

An electrophotographic photoreceptor includes a conductive support in which (i) a recessed portion having an opening diameter of greater than 400 &#x3bc;m and (ii) a recessed portion having an opening diameter of from 100 &#x3bc;m to 400 &#x3bc;m and a ratio of a depth to an opening diameter of greater than 0.12 are not present on an outer peripheral surface, wherein even in a case where a first recessed portion having an opening diameter of from 100 &#x3bc;m to 400 &#x3bc;m and a ratio of a depth to an opening diameter of 0.12 or less is present on the outer peripheral surface of the conductive support and a second recessed portion on which the first recessed portion is reflected is present on the outer peripheral surface of an outermost layer, a ratio of a depth to an opening diameter of the second recessed portion is not greater than 0.030.

An electrophotographic photoreceptor includes a conductive substrate satisfying a condition (A); an undercoat layer satisfying conditions (B) and (C), disposed on the conductive substrate, and containing metal oxide particles; and a photosensitive layer disposed on the undercoat layer: condition (A): in the case where depressions existing in the surface of the conductive substrate are observed with a laser microscope, the width of the largest depression is 400 &#x3bc;m or less, and the depth of the depression is 15 &#x3bc;m or less; condition (B): in the case where the undercoat layer is subjected to a Cole-Cole plot analysis, an angular frequency &#x3c9;max at which a complex impedance component is maximum is from 2.0 rad to 25.0 rad; and condition (C): volume resistivity obtained from the Cole-Cole plot analysis of the undercoat layer is from 7.0&#xd7;10&#x3a9; to 1.0&#xd7;10&#x3a9;.

An electrophotographic photoreceptor includes a conductive substrate, an undercoat layer provided on the conductive substrate and including metal oxide particles, and a photosensitive layer provided on the undercoat layer,

A computerof a ship monitoring devicearranges one kind of transmission data between two consecutive start control codes and two consecutive termination control codes. The computeralso arranges information indicating a type of the transmission data between the transmission data and the start control codes and between the termination control codes and the transmission data. In this way, the transmission data is transmitted in form of packet data. Therefore, transmission data in information communication between ships and sensed information in information communication of fenders can be easily distinguished from each other. In addition, a type of information transmitted as the transmission data can be easily identified.

Ship monitoring device

A position of a target ship alongside is displayed in animation on a display unitby the computerbased on any one of the positional information on the target ship alongside, which is transmitted from an automatic identification system (AIS) of a target ship alongside and is obtained by an AIS communication unit, positional information on the target ship alongside, which is obtained by the GNSS communication unitfrom a global navigation satellite system, and positional information on the target ship alongside, which is manually inputted via an operation unit. Therefore, the latest position of the target ship alongside can be always displayed in animation.

An endless belt member for an image forming apparatus includes an endless belt member body that contains a resin and conductive particles, an inner transparent film, a position detection member that is used to detect the position of the endless belt member body, and an outer transparent film, wherein the position detection member is sealed by the inner and outer transparent films, is provided on a part of an outer peripheral surface of the endless belt member body, and has side surfaces which are substantially perpendicular to the outer peripheral surface of the endless belt member body, and the inner and outer transparent films are welded to each other at portions, which is adjoining the side surfaces of the position detection member, of the portions that come into direct contact with each other.

Endless belt member, image forming apparatus, and method of manufacturing endless belt member having position detecting member

The invention provides an annular body provided at an image forming apparatus, the annular body has at least an outermost periphery layer and an innermost periphery layer, each of which comprise carbon black, and a content of carbon black contained per unit of volume of the outermost periphery layer being smaller than a content of carbon black contained per unit of volume of the innermost periphery layer. The invention further provides an annular body stretching device, having at least the annular body and a plurality of annular body stretching units rotatably stretching the annular body at an inner surface of the annular body. The invention further provides an image forming apparatus having at least an image holder, a charging device, an exposing device, a developing device, a first transferring device, a second transferring device, and a fixing device, in which the intermediate transfer belt is the annular body.

Annular body, annular body stretching device and image forming apparatus

This invention provides a circular body, which is used for an image forming apparatus employing an electrophotographic system, the circular body containing: at least an inner layer containing resin and an outer layer that is laminated on an outer circumferential surface side of the inner layer and contains resin; and, as a conductive agent, polyaniline in the outer layer and carbon black in the inner layer; and satisfying the following relational expressions (1) and (2):13.0&#x2266;C1&#x2266;15.0&#x2003;&#x2003;(1)21.5&#x2266;C2&#x2266;25.0&#x2003;&#x2003;(2),wherein Crepresents the content (parts by weight) of the polyaniline with respect to 100 parts by weight of the resin forming the outer layer, and Crepresents the content (parts by weight) of the carbon black with respect to 100 parts by weight of the resin forming the inner layer, as well as a circular body unit using the circular body and an image forming apparatus using the circular body.

Circular body, circular body unit, and image forming apparatus

An image forming apparatus belt includes a belt main body; a guiding member that is fixed to the belt main body along at least a side edge on one side of the belt main body; and a detected portion for position detection that is provided in a slit of the guiding member.

Image forming apparatus belt having a detecting portion for position detection

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Kanagawa, Japan

Masahiko Miyamoto