Sharp Kabushiki Kaisha Corporation

Mita Industrial Co., Ltd.

Mitsuharu Yoshimoto

Shohichi Fukutome

Yasuhiro Suto

Kenji Nakanishi

Hisashi Yamanaka

Tomohiko Okada

Masahiro Imoto

Yoshihisa Yamada

Takashi Kondo

Yutaka Shigemura

Yukihiro Ito

Junichi Oura

Satoshi Yano

Hideo Umezawa

Kenji Tanaka

Yoshifumi Okauchi

Tadahiro Kiyosumi

Norio Tomita

Kyosuke Taka

Hiroshi Wada

Susumu Hanano

Nobuo Manabe

Takeshi Sakaguchi

Junichi Inada

Susumu Takehara

Sinji Yamamoto

Tetsuro Tomoe

Yoshitaka Okahashi

Yoshitake Miyoshi

Takashi Miyake

Noritomo Nakashima

Eijiro Masaki

Seiichi Shirasaki

Naoyuki Ishida

Keiji Sakai

Hironori Ogasawara

Kazuma Ogawa

Sohichi Takata

Toshihiko Watanabe

Manabu Matsumoto

Hidekazu Sakagami

Takao Horiuchi

Masanobu Takahashi

Kiyoshi Hayashi

Kotaro Kawasaki

Reishi Aoki

Eiji Kurimoto

Takeshi Mutoh

Atsushi Yoshihara

Yoshikazu Fukuda

Hiroshi Sudoh

Yutaka Fukuda

Norimasa Kishigami

An image reader used as a back surface reading unit includes LEDs, a first mirror, a second mirror, a third mirror, a lens, and a CCD inside a housing. The first mirror, which first reflects light reflected from the document, is positioned farther away from the document reading position than other reflecting mirrors (i.e. the second mirror and the third mirror) in an optical axis direction of the optical path connecting the document reading position and the first mirror.

Document feeder and image forming apparatus

An illuminating device capable of stably illuminating an irradiated object such as a document while suppressing light loss with a simply structure is provided. An LED array and a reflective plate are disposed sandwiching a slit (St) through which light reflected by a document MS passes and a light-guiding member is disposed on the side of the LED array. The light-guiding member includes a direct emission unit disposed between an illumination range y centered on a document reading position and the LED array and an indirect emission unit disposed between the reflective plate and the LED array, a light incidence face of the direct emission unit and a light incidence face of the indirect emission unit are disposed at mutually different position around the LED array, and the LED array is disposed on a side of an interior angle formed by the light incidence faces.

Illuminating device, image reading apparatus including the illuminating device, and image forming apparatus including the image reading apparatus

An illuminating device according to an embodiment included in an image reading apparatus and an image forming apparatus includes light source portions, light-guiding members for illuminating an illumination target from an elongated light emitting face that extends in a longitudinal direction, by guiding light from the light source portions, and holding members for holding the light-guiding members. The holding members include holding portions for removably holding the light-guiding members, and tilted portions that reflect light emitted from the light emitting face, the tilted portions extending from a front end on the light emitting face side of the holding portions, obliquely widening with increasing distance from the light-guiding members.

Illuminating device, image reading apparatus and image forming apparatus

An illuminating device () according to an embodiment of the invention included in an image reading apparatus () and an image forming apparatus (D) includes light source portions (), (), () and (), light-guiding members () and () for illuminating an illumination target (G) from an elongated light emitting face (M) that extends in a longitudinal direction (Y), by guiding light from the light source portions, and holding members () and () for holding the light-guiding members. The holding members include holding portions () and () for removably holding the light-guiding members, and tilted portions () and () that reflect light emitted from the light emitting face (M), the tilted portions extending from a front end on the light emitting face (M) side of the holding portions, obliquely widening with increasing distance from the light-guiding members.

An image forming apparatus includes an image reading unit, an image forming unit, a discharge unit, and a discharge tray. The image reading unit is configured to read a document placed on a document placement table by moving and scanning of a scanning body in a sub-scanning direction. The image forming unit is configured to form an image read by the image reading unit on a paper sheet. The discharge unit is configured to discharge the paper sheet on which an image is formed by the image forming unit to a direction perpendicular to the sub-scanning direction. The discharge tray is on which the paper sheet from the discharge unit is to be placed with a space portion at a lower side of the image reading unit. A bottom surface of a housing of the image reading unit facing the discharge tray is constituted of a first surface and a second surface. The first surface is a surface at a front side of the discharge unit in a discharging direction and high with respect to the discharge tray. The second surface is a surface at a back side of the discharge unit in the discharging direction lower than the first surface with respect to the discharge tray. A pulling member and/or a movable wiring are/is arranged at an upper side of the second surface inside the housing. The pulling member is configured to move the scanning body back and forth in the sub-scanning direction. One end portion of the movable wiring is secured to the scanning body.

Image forming apparatus

An image reader is provided, in its housing, with a first scanning unit made up of an LED array of a plurality of LED elements that are arranged in a row in the horizontal scanning direction and that emit light to a document. An air intake port and an air exhaust port are disposed on the housing of the image reader. An imaginary line of an air flow path coupling the air intake port and the air exhaust port to one another is configured to pass adjacent a center of the LED array of the first scanning unit in the horizontal scanning direction with the first scanning unit stopped at a reading position of the document transferred by a document transfer device.

Image reader and image forming apparatus

An illuminating device capable of stably illuminating an irradiated object such as a document while suppressing light loss with a simply structure is provided. An LED array () and a reflective plate () are disposed sandwiching a slit (St) through which light reflected by a document MS passes and a light-guiding member () is disposed on the side of the LED array (). The light-guiding member () includes a direct emission unit () disposed between an illumination range y centered on a document reading position and the LED array () and an indirect emission unit () disposed between the reflective plate () and the LED array (), a light incidence face of the direct emission unit () and a light incidence face of the indirect emission unit () are disposed at mutually different position around the LED array (), and the LED array () is disposed on a side of an interior angle formed by the light incidence faces.

Growing community of inventors

Osaka, Japan

Mitsuharu Yoshimoto