Class 399/218 - Lens

Subclass of Class 399 - Electrophotography
Definition: Subject matter wherein a particular optical component which
No. of patents: 56
Last issue date: 07/10/2007

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Number	Title	Issue Date
7241559	Lens array and method for fabricating the lens array A lens array and a method for fabricating the lens array are described herein. The lens array is made from a photosensitive glass plate containing a relatively small amount of a photosensitive agent (e.g., silver, gold or combination thereof) such that when the phot...	07/10/2007
7121744	Optical link device An optical link device is provided that is capable of avoiding deterioration of a signal by preventing stray light from coming into a light receiving element and is capable of miniaturizing the device itself. There are provided a light emitting element which outputs...	10/17/2006
7088425	Exposure apparatus, optical projection apparatus and a method for adjusting the optical projection apparatus An exposure apparatus includes a plurality of projection optical systems and a substrate stage. Each of the plurality of projection optical systems forms an exposure field on the substrate. The substrate stage holds the substrate and moves in at least a scanning dir...	08/08/2006
7060640	Optical glass An optical glass comprises, in mass percent, 15–35% of P2O5, 40–60% of Nb2O5, 0.5% to less than 15% of Na2O and 3% to less than 25% of BaO, has a ratio in mass % of (BaO+Nb2O5)/{(TiO	06/13/2006
7021541	Original illuminating apparatus and image reader having the same The invention aims at obtaining an original illuminating apparatus and an image reader having the same with which “the reflection” phenomenon is reduced, and much quantity of light for illumination is obtained in an area to be read of an original to thereby be a...	04/04/2006
5801849	Image reading device and document scanning system The document scanner of the present invention includes a reading assembly of simple, compact and light-weight construction. The reading assembly includes an optical system having a relatively short focal length. The reading assembly is thus simply configu...	09/01/1998
5752137	Multi-color image forming apparatus having a plurality of detachable units A multi-color image forming apparatus includes a rotatable endless image forming member, plural exposure devices provided inside of the image forming member, and plural units each including a charger to electrically charge an outer surface of the image fo...	05/12/1998
5552863	Xerographic printer wherein exposure and development are performed on opposite sides of the photoreceptor A xerographic print engine includes a rotatable photoreceptor belt. The photoreceptor is exposed by delivering energy to the inward-facing side of the belt, and the electrostatic latent image is developed by applying toner to the outward-facing side of th...	09/03/1996
5463451	Document reproduction system including a duplex document handler with natural inversion The invention is directed to a document reproduction system which includes an improved apparatus for imaging both sides of a duplex document while also providing for simplex side only imaging. A document feeder, operating in a constant velocity transport ...	10/31/1995
5444520	Image devices In an image device wherein rays from LED arrays are guided through single lenses to form an image, LED arrays are arranged on a base plate, single lenses are arranged on a lens plate, the distance between the base plate and the lens plate is kept constant...	08/22/1995
5426490	Solid state scanning device An exposure apparatus having a transparent base member opposed to a photosensitive drum and forming part of a vacuum chamber, an electrode formed in the vacuum chamber for discharging thermoelectrons, a fluorescent member formed on the base member for emi...	06/20/1995
5216525	Table top hardware for imaging documents An imager for imaging a document moving in a document track in a table top document processing machine. The imager includes a housing which is made of several portions which are designed to be assembled quickly with a minimum of fasteners. A first line of...	06/01/1993
5214474	Copying apparatus The intensity of a light emitted from a light source and reflected on a document is detected by an exposure sensor. A control section controls an exposure adjusting circuit to adjust an intensity of the light emitted from the light source based on a detec...	05/25/1993
5126795	Image recording method An image forming method of the present invention comprises: a first toner image formation process for forming a first toner image by forming, on a latent image carrier, a first latent image which corresponds to a first image and developing the first laten...	06/30/1992
5119135	Selectively variable image positioning system for use in electrophotographic copying apparatus An electrophotographic copying apparatus is disclosed having an imaging system for selectively shifting an image on an output copy sheet in response to a particular image shift selection by a operator. Electronic input signals, representative of selective...	06/02/1992
5072260	Image forming apparatus having analog and digital exposure means An image forming apparatus includes a movable photosensitive member, a charger for uniformly charging the photosensitive member, exposure device for illuminating an original and exposing the photosensitive member charged by the charger to the light from t...	12/10/1991
5049936	Electrophotographic copier/duplicator having dual imaging apparatus An electrophotographic copier/duplicator having a 17"×11" wide endless photoconductor includes single imaging apparatus for forming and processing a single 17"×11" image at a time, within a 17"×11 " image frame of its photoconductor, and dual imaging a...	09/17/1991
5023663	Copying magnification setting device for an electrophotographic copying apparatus An image forming apparatus that is capable of providing various copy ratios includes an original table that can receive an original document from an image carrier. The original is then illuminated, and a focusing lens system is capable of focusing reflect...	06/11/1991
5010366	Slide transparency projector apparatus for use with an electrophotographic reproduction machine Apparatus for enabling an electrophotographic reproduction device to make reproductions of slide transparencies. The electrophotographic reproduction device includes a transparent platen for supporting information to be reproduced. A main lens assembly pr...	04/23/1991
4873550	Electrophotographic copier including means for sensing the size of an original document An electrophotographic copier of the type moving an original document and optics relative to each other to expose a photoconductive element imagewise via the optics to thereby form a latent image on the photoconductive element, developing the latent image...	10/10/1989
4763173	Imaging system for compensating for image distortion due to wrinkled or curled documents A document imaging system is compensated for distortion caused by non-planarity in the documents by providing a positive lens with varying power at a location beneath the document platen. In a preferred embodiment, an aspheric fresnel lens is used as the ...	08/09/1988
4655579	Multicolored image forming apparatus Multicolored image forming apparatus wherein image processing is accomplished by exposing a photosensitive drum through an exposure optical device to the reflected light beam from the document illuminated with a lamp, reading the document image by an imag...	04/07/1987
4653894	Fiber lens array mounting in reproduction machines A reproduction machine employing a gradient index fiber lens array having a mounting pin adjacent each end of the array body, a flat metallic array support surface in the machine against which the array abuts when in place in the machine, a mounting hole ...	03/31/1987
4575214	Copier/laser-printer conversion A method of converting existing copiers to laser printer engines by externally attaching an apparatus to the copier with no significant alteration of the copier engine, and attachable in an easily removable manner. The apparatus consists of a laser togeth...	03/11/1986
4572611	Apparatus including an integral optical device An optical apparatus for focusing at least one image and optionally only one image of an object, said apparatus comprising a receiving surface and an optical imaging device between the image and the object to form an image of the object on the receiving s...	02/25/1986
4523838	Image forming apparatus An image forming apparatus provided with a first projection optical system for forming an intermediate image of a desired final image, a second projection optical system for slit scanning the intermediate image to reconstruct the intermediate image, by of...	06/18/1985
4522485	Copying machine including a dielectric covered metal reflective device A copying machine has at least one metal surface of high reflectance provided with a dielectric multilayer film vapor deposited thereon. The dielectric film has a wavelength selectivity and serves to match the wavelength characteristics of the light sourc...	06/11/1985
4505570	Image-forming optical system A small-size image formation optical system including two types of a plurality of Porro prism lenses, with an upper lens surface and a lower lens surface of each Porro prism lens being in the form of mirror images, said Porro prism lenses being combined t...	03/19/1985
4505569	Projection apparatus which compensates for the spectral sensitivity of an image receiving member A projection apparatus includes an optical system for forming an image of an object illuminated by an illumination source on a photosensitive member. In the projection apparatus according to the invention, at least one lens in the lens system disposed in ...	03/19/1985
4461565	Optical scanning device This specification discloses an optical scanning device in a copying machine or the like of the slit exposure scanning type in which two scanning mirrors are disposed in an optical path between an image forming element and a photosensitive surface which i...	07/24/1984
4459011	Compact screen projector A duplicator has a photoconductor on which electrostatic images are formed. A member having a screen pattern of opaque and transparent areas is positioned adjacent to the photoconductor. A Fresnel lens near the screen member receives light rays from a con...	07/10/1984
4432633	Electrophotographic reproducing apparatus An electrophotographic reproducing apparatus in which a reproducing apparatus body unit including an electrostatic latent image receptor such as a photosensitive member and other electrophotographic treating device is assembled in advance whereas an optic...	02/21/1984
4431299	Projection apparatus A projection apparatus for forming an image of original on a photosensitive material opposed to the plane of the original. The projection apparatus has a projecting system composed of a plurality of projection optical system arrays. Each individual projec...	02/14/1984
4408870	Duplicating system comprising electrophotographic copying apparatus and option devices A duplicating system comprises an electrophotographic copying apparatus which includes a first optical scanning system for making a slit exposure, a first document feeder for feeding a first document to be copied at a first speed with respect to the first...	10/11/1983
4391506	Driving method and apparatus for illumination type imaging system A reciprocating illumination type imaging system is driven by a first drive source and a rotatable photoconductive drum is driven by a second drive source. A time period necessary for the drum to rotate a given angle is measured. The measured time period ...	07/05/1983
4386843	Scanning system for document reproduction device An optical system for scanning a document in an object plane includes a pivoting mirror and a projection lens which projects an image onto the surface of a photoreceptor. By rotating and translating the projection lens while simultaneously moving an apert...	06/07/1983
4383755	Unitary, modular, demountable optical system for laser diode/printing copying apparatus A self contained, demountable, unitary modular optical system for a Solid State Laser Diode Printer/Copier utilizes a folded light beam path whereby laser light is collimated through a compound four element collimating objective lens assembly, passed thro...	05/17/1983
4372670	Precession scanning system An imaging system is provided for scanning stationary objects in an object plane and projecting the image onto a moving flat photoreceptor in such a manner that the image moves in a direction opposite the photoreceptor movement. In a preferred embodiment,...	02/08/1983
4368975	Projection device This specification discloses a projection device in which a plurality of element lens systems for projecting a part area of an object onto a predetermined part area on the image plane at erect one-to-one magnification are arranged parallel to one another ...	01/18/1983
4364658	Scanning illuminator A scanning illuminator has a compact structure suitable for use in high speed copying machines and is adapted to reflect light beams from two light sources fixed adjacent to the opposite ends of an original supporting area to the surface of an original by...	12/21/1982

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Class 399/218 - Lens