Canon Kabushiki Kaisha

Gradco Japan Ltd.

Asahi Kasei Kabushiki Kaisha

Yumiko Kato

Kazushige Masunari

Toshihiro Sunaga

Akihiro Nishio

Hiroshi Tsuchiya

Yuichiro Sakamoto

Kuniaki Kimura

Tomoyuki Taniguchi

Shintaro Wakimura

To provide a core material for a fiber reinforced composite having an excellent workability upon being composited with a fiber reinforcing material. A core material for a fiber reinforced composite of the present disclosure comprises a molded product of expanded beads containing a thermoplastic resin, and having a heat shrinkage onset temperature of 80&#xb0; C. or higher, a linear expansion coefficient of 10&#xd7;10mm/mm&#xb7;&#xb0; C. or less, and a ratio of change in dimensions with heating at 130&#xb0; C. of &#x2212;4.0% to 0%.

Core material for fiber reinforced composite and fiber reinforced composite having the same

A sheet processing apparatus includes a sheet conveying path; a sheet entrance unit provided in the sheet conveying path; a sheet discharge unit provided in a location separated from the sheet entrance unit by a predetermined distance; a driving unit that drives the sheet entrance unit and the sheet discharge unit; a sheet guide unit that guides sheets and is provided between the sheet entrance unit and the sheet discharge unit to allow the sheets passing through the sheet entrance unit to be sequentially stacked; and a sheet buffer device that is configured such that the stacked sheets pass through the sheet discharge unit while the stacked sheets are loaded on a step with each leading end of the stacked sheets being separated with a predetermined interval.

Sheet processing apparatus

A binding apparatus performs a binding process by bonding the end side of the sheet bundle, and is provided with a notch cutter that forms a notch in the end side used in the sheet binding process in the middle of the sheet conveyance path of the binding apparatus. The notch-forming unit includes a pair of sheet conveyance guides for forming a part of the sheet conveyance path, a cutter provided in a rotatably supported bracket, and a biasing means for applying a force to the cutter to face the sheet conveyance path formed by a pair of the sheet conveyance guides at all times.

Binding apparatus

A sheet-processing device for performing various sheet post-processing functions at high speed and implementing a compact structure includes a compilerthat causes a stacked sheet to wait until stapling processing is performed; a joggerthat aligns the sheet stacked on the compiler; a stapler devicethat performs the stapling processing to the sheet aligned by the joggeras many as the setting number of sheets; and a sheet transfer pathwaythrough which the sheet in which an image is formed is delivered to the compiler

Sheet processing device

An observation optical system is disclosed with which the Fresnel reflection at the surfaces of optical members can be reduced, the transmittance can be improved, and the surface reflection ghost that occur among a plurality of optical surfaces can be suppressed. The observation optical system of the present invention comprises a plurality of optical surfaces, and a fine periodic structure, with a period smaller than the wavelength of incident light, is provided at an effective optical region of at least one surface among the aforementioned plurality of optical surfaces.

Observation optical system and optical apparatus

A viewfinder optical system includes an objective lens unit, an image inverting unit for converting an object image formed via the objective lens unit into a non-inverted erecting image, and an eyepiece lens unit for observing the non-inverted erecting image, wherein the image inverting unit comprises a first transparent body and a second transparent body which are disposed with an interval put therebetween, the second transparent body having only a function of transmitting a ray of light, and wherein the interval between the first transparent body and the second transparent body is not uniform. Further, a viewfinder optical system includes an objective lens unit, an image inverting unit for converting an object image formed via the objective lens unit into a non-inverted erecting image, and an eyepiece lens unit for observing the non-inverted erecting image, wherein the image inverting unit comprises a first transparent body and a second transparent body which are disposed with an interval put therebetween, the second transparent body having only a function of transmitting a ray of light, and wherein at least one of surfaces of the first transparent body and the second transparent body is a rotationally-asymmetrical surface.

Viewfinder optical system and optical apparatus

Reflective optical element, reflective optical system, image display system, and finder optical system

A compact finder with excellent optical performance, and a camera including the finder are disclosed. The finder of the present invention includes an objective optical system, and an eyepiece optical system. The objective optical system includes, from an object side to an image side, a first lens unit having positive power, a second lens unit having negative power, a third lens unit having positive power, and a fourth lens unit having positive power. During zooming from a wide-angle end to a telephoto end, the second lens unit is moved toward the image side, the third lens unit is moved toward the object side, and the fourth lens unit is moved such that an air space between the fourth lens unit and the third lens unit is changed. The camera of the present invention includes a photo-taking optical system, and the finder of the present invention whose optical axis is different from an optical axis of the photo-taking optical system.

Growing community of inventors

Tokyo, Japan

Yumiko Kato