Fujitsu Corporation

Tadayoshi Nakata

Rika Nishiwaki

Yoshihiro Takashimizu

Hiroyuki Maruyama

Toshiaki Anzai

Seigo Umeda

Toshiaki Kumagai

Naoyuki Fujimoto

Shigehiro Fujii

Tomoaki Fukuda

Tatsuya Itakura

Mitsuhiro Hirohata

Yoshizi Atsumi

The invention provides a paper supply apparatus for an image reading apparatus, an image reading apparatus with a paper supply apparatus and a paper supply apparatus which can be used suitably with an image scanner wherein a large amount of paper sheets can be taken out one by one with certainty and read successively and rapidly. The paper supply apparatus successively supplies paper sheets accommodated therein to a paper transport mechanism along which an optical image reading mechanism is disposed, and comprises a paper supply hopper, a paper supply roller located above the paper supply hopper for forwarding the paper sheets accommodated in the paper supply hopper, a paper supply roller driving mechanism for rotating the paper supply roller, and a paper separation mechanism for preventing two or more paper sheets forwarded by the paper supply roller from being sent to the paper transport mechanism. The paper separation mechanism includes a paper skew prevention mechanism for holding down a passing paper sheet with a higher paper holding down force at a central location in the widthwise direction of the paper sheet but with lower paper holding down forces at the opposite end locations in the widthwise direction of the paper sheet.

Paper supply apparatus for image reading apparatus and image reading

A flash lamp fixing with a simple structure, capable of obtaining an even distribution of high-level luminous energy over a large area on the surface of a paper sheet illuminated by a flash lamp. In the flash lamp fixing device, the half breadth L.sub.1 of the aperture of the reflector is set so as to satisfy the equation V/T.gtoreq.L.sub.1 .gtoreq.V/T-L.sub.2 /2, where V is the conveying speed of a paper sheet; T is the flash cycle of the flash lamp; L.sub.1 is the half breadth of the aperture of the reflector; and L.sub.2 is the length of an area in which fixing can be done by one flash of the flash lamp. Where .theta..sub.1 represents the included angle between a tangent which passes through one of aperture edges, being tangent to the flash lamp on the side of the aperture and the plane of the aperture; and .theta..sub.2 represents the included angle between a tangent which passes through the aperture edge, being tangent to a safety distance critical circle centered on the center of the flash lamp and a plane normal to the aperture plane, the tilt angles of the respective inclined face parts in relation to the plane normal to the aperture plane are set to be not less than .theta..sub.1 and not more than .theta..sub.2.

Flash lamp fixing device

Growing community of inventors

Kawasaki, Japan

Tadayoshi Nakata