Patent application number | Description | Published |
20080204842 | OPTICAL SCANNING DEVICE AND IMAGE FORMING APPARATUS - By setting elements within the range that predetermined conditions are satisfied, for example, so that a size of a rotating polygon mirror is minimized, the rotating polygon mirror is made compact while the eclipse of light beams in the main scanning direction is prevented. The cost reduction of an apparatus is thus realized. The compact rotating polygon mirror reduces the consumption energy and the amount of heat generated in its drive system. Deteriorations in various optical characteristics including an increase in spot diameter of the light beam by temperature variation, uneven scanning pitch, and sub-scanning direction variation in beam pitch are suppressed. | 08-28-2008 |
20080219601 | OPTICAL SCANNER AND IMAGE FORMING APPARATUS - An optical scanner includes a housing and an intermediate member that includes a first joining surface and a second joining surface. The first joining surface is attached to the housing and the second joining surface is attached to at least one optical element of any one of a first optical system and a second optical system. In a three-dimensional coordinate in which a first one of coordinate axes is a direction that is parallel to both the first joining surface and the second joining surface, a second range on the first coordinate axis corresponding to the second joining surface includes a center point of a first range on the first coordinate axis corresponding to the first joining surface. | 09-11-2008 |
20090141316 | IMAGE FORMING APPARATUS - A deflector deflects a light beam from a light source. A scanning optical system focuses the light beam deflected by the deflector. An image carrying member is located at a focal position of the light beam and includes a surface that is scanned in a main scanning direction with the light beam focused by the scanning optical system. One pixel of an image is formed by a plurality of light spots having different focal positions in at least a sub-scanning direction. At least one light spot from among the light spots is formed on the surface of the image carrying member at a scan timing different from those of rest of the light spots. | 06-04-2009 |
20090195636 | OPTICAL SCANNING DEVICE AND IMAGE FORMING APPARATUS - A pre-deflector optical system includes an isolator arranged on an optical path of a light beam from a light source. The isolator has a first surface with different light transmittances depending on a polarization state of an incident light beam on a first side close to the light source and a second surface imparting an optical phase difference of a ¼ wavelength to the incident light beam on a second side. A deflector deflects the light beam passed through the pre-deflector optical system. A rotation mechanism rotates the isolator around its optical axis. A holding member holds the light source and the isolator in a predetermined positional relationship. | 08-06-2009 |
20090314927 | OPTICAL SCANNING DEVICE, IMAGE FORMING APPARATUS, AND OPTICAL SCANNING METHOD - A surface-emitting laser array includes a plurality of surface-emitting laser devices arranged in an array. An optical system includes a plurality of optical devices to guide a light beam composed of lights emitted from the surface-emitting laser array to a target surface to be scanned. A light-intensity-control-device switching unit places one of light-intensity control devices having different light transmittances at a predetermined position in an optical path of the light beam. | 12-24-2009 |
20110012982 | OPTICAL SCANNING DEVICE AND IMAGE FORMING APPARATUS - An optical scanning device includes: a light source; an optical deflecting unit that deflects a light beam emitted from the light source to scan on a scanning surface in main-scanning direction; and a scanning optical system that includes a first scanning lens and a second scanning lens that converge the light beam that is deflected onto the scanning surface. Distance between an exit surface of the first scanning lens and an incident surface of the second scanning lens is shorter than distance between a deflection facet of the optical deflecting unit and an incident surface of the first scanning lens, an exit surface of the second scanning lens is nearer to the deflection facet than a midpoint between the deflection facet and the scanning surface, and an image-surface-side principal point of the scanning optical system in sub-scanning direction is nearer to the scanning surface than the midpoint. | 01-20-2011 |
20110052263 | OPTICAL SCANNER AND IMAGE FORMING APPARATUS - An optical scanner includes a light source including light emitters, an aperture member collimating light beams from the light source, a deflector deflecting the light beams passing through the aperture member, and a scanning optical system condensing the deflected light beams onto a scanned surface to optically scan the surface in a main-scanning direction. The scanning optical system includes a resin scanning system having at least one resin scanning lens. At least one folding mirror/sheet glass is disposed between a scanning lens nearest to the deflector in the resin scanning system and the scanned surface. At least one scanning lens in the resin scanning system has an uneven birefringence distribution with respect to a sub-scanning direction. An optical conjugate image of the aperture member is formed between a lens surface nearest to the deflector in the resin scanning system and a lens surface nearest to the scanned surface with respect to the sub-scanning direction. | 03-03-2011 |
20110122217 | OPTICAL SCANNER AND IMAGE FORMING APPARATUS - An optical scanning system for a K station includes a resin scanning lens and three reflecting mirrors. Two reflectance ratios are calculated: one being the reflectance ratio of a luminous flux traveling toward the scanning start position of a drum-shaped photosensitive drum and the other being the reflectance ratio of a luminous flux traveling toward the scanning end position of the photosensitive drum. The magnitude relation between the two reflectance ratios is such that the reflecting mirror has an inverse magnitude relation to that of the other reflecting mirrors. Moreover, the difference is calculated between the largest value and the smallest value of the reflectance ratio, where the reflectance ratio depends on the angle of deviation of the polygon mirror. The reflecting mirror has the largest difference among the three reflecting mirrors. | 05-26-2011 |
20110221857 | OPTICAL SCANNER AND IMAGE FORMING APPARATUS - An optical scanner includes a light source, a deflector and a scanning optical system. The scanning optical system includes a first optical system including at least one resin scanning lens, and a second optical system between the target surface and one resin scanning lens. The second optical system includes at least one of a folding mirror(s) and a glass sheet(s), wherein m1+g2=m2+g1 is satisfied wherein m1 and g1 are respectively number of the folding mirror(s) and number of the glass sheet(s) to which the first ray has a shorter optical path than the second ray does, m2 and g2 are respectively number of the folding mirror(s) and number of the glass sheet(s) to which the first ray has a longer optical path than the second ray does. | 09-15-2011 |
20120177409 | OPTICAL SCANNING DEVICE AND IMAGE FORMING APPARATUS - Each scanning optical system includes a first scanning lens and a second scanning lens through which a light beam is incident onto the first scanning lens. The second scanning lens of each scanning optical system is disposed at the optically most downstream side in the scanning optical system and has an optical plane that has the strongest power in a sub-scanning corresponding direction. In addition, the optical plane of each second scanning lens, which has the strongest power in the sub-scanning corresponding direction, is located under the shaft bearings of neighboring polygon mirrors in the vertical direction. | 07-12-2012 |
20130188004 | LIGHT BEAM SCANNING DEVICE AND IMAGE FORMING APPARATUS - In a light beam scanning device, a plurality of light sources, which irradiates a plurality of light beams in a first direction and is retained by a holder, are disposed at distance from one another in a second direction orthogonal to the first direction. The plurality of light beams are incident, via a coupling optical system, to deflecting and reflecting surfaces of a deflector from a direction that is tilted with respect to a plane orthogonal to the rotational shaft of the deflector. The holder is supported by a housing of the light beam scanning device at a plurality of different positions in a third direction extending from the light source to the coupling optical system. | 07-25-2013 |
20140340658 | PROJECTION OPTICAL SYSTEM AND IMAGE DISPLAY APPARATUS - There is provided a projection optical system capable of projecting an image formed on an image forming unit on a projection plane, which has an extremely short projection distance and a small size. | 11-20-2014 |
20150205099 | OPTICAL PROJECTION SYSTEM AND IMAGE PROJECTOR INCORPORATING THE SAME - An optical projection system enlarges an image on an image display element and projects the enlarged image onto a screen. The system includes the image display element, a first optical system including lens groups arranged in order from an image display element side, a lens barrel holding the lens groups, and a free-form surface lens rotationally asymmetric and made from plastic, and a second optical system including a curved mirror disposed after the first optical system, wherein the free-form surface lens is formed to decrease in thickness from an intersection point between a surface of the free-form surface lens and an optical axis of the first optical system to an outer periphery of the lens along a line extending to the outer periphery. | 07-23-2015 |
20150261120 | OPTICAL SCANNER AND IMAGE FORMING DEVICE INCORPORATING SAME - An optical scanner includes a light source including a plurality of light emitting elements, a polygon mirror which deflects light from the light source for scanning a surface of a subject, an optical element arranged between the light source and the polygon mirror, having optical power in a sub scanning direction, a synchronous detector which detects the light deflected by the polygon mirror for synchronous detection and generates a signal for controlling a timing at which the scanning of the surface is started, and a fixing element which secures one end of the optical element. The light emitting elements of the light source are aligned with a certain tilt angle relative to the sub scanning direction. Light from one of the light emitting elements disposed closest to the fixing element in a main scanning direction is used for synchronous detection. | 09-17-2015 |
Patent application number | Description | Published |
20100178487 | PREPREG AND CARBON FIBER REINFORCED COMPOSITE MATERIALS - A prepreg containing a carbon fiber [A] and a thermosetting resin [B], and in addition, satisfying at least one of the following (1) and (2).
| 07-15-2010 |
20110147674 | PREPREG AND CARBON FIBER REINFORCED COMPOSITE MATERIALS - A prepreg containing a carbon fiber [A] and a thermosetting resin [B], and in addition, satisfying at least one of the following (1) and (2).
| 06-23-2011 |
20110151235 | PREPREG AND CARBON FIBER REINFORCED COMPOSITE MATERIALS - A prepreg containing a carbon fiber [A] and a thermosetting resin [B], and in addition, satisfying at least one of the following (1) and (2).
| 06-23-2011 |
20110287246 | PREPREG AND CARBON FIBER REINFORCED COMPOSITE MATERIALS - A prepreg containing a carbon fiber [A] and a thermosetting resin [B], and in addition, satisfying at least one of the following (1) and (2).
| 11-24-2011 |
20110291056 | PREPREG AND CARBON FIBER REINFORCED COMPOSITE MATERIALS - A prepreg containing a carbon fiber [A] and a thermosetting resin [B], and in addition, satisfying at least one of the following (1) and (2). | 12-01-2011 |
20120058297 | PREPREG AND CARBON FIBER REINFORCED COMPOSITE MATERIALS - A prepreg containing a carbon fiber [A] and a thermosetting resin [B], and in addition, satisfying at least one of the following (1) and (2) (1) a thermoplastic resin particle or fiber [C] and a conductive particle or fiber [D] are contained, and weight ratio expressed by [compounding amount of [C] (parts by weight)]/[compounding amount of [D] (parts by weight)] is 1 to 1000. | 03-08-2012 |
20140309336 | PREPREG, FIBER REINFORCED COMPOSITE MATERIAL, AND MANUFACTURING METHOD FOR FIBER REINFORCED COMPOSITE MATERIAL - Embodiments herein relate to a prepreg comprising a thermosetting resin, and reinforcing fibers in the thermosetting resin, wherein when the prepreg is cured in vacuum bag only conditions, and a method of making the same. The method also applies for autoclave processing. Embodiments also relate to a cured fiber reinforced composite material made by thermally curing the prepreg. | 10-16-2014 |
20140329075 | SIZING AGENT-COATED CARBON FIBERS, PROCESS FOR PRODUCING SIZING AGENT-COATED CARBON FIBERS, PREPREG, AND CARBON FIBER REINFORCED COMPOSITE MATERIAL - Sizing agent-coated carbon fibers includes: a sizing agent including an aliphatic epoxy compound (A) and at least containing an aromatic epoxy compound (B1) as an aromatic compound (B); and carbon fibers coated with the sizing agent, wherein the sizing agent-coated carbon fibers have an (a)/(b) ratio of 0.50 to 0.90 where (a) is a height (cps) of a component at a binding energy (284.6 eV) assigned to CHx, C—C, and C═C and (b) is a height (cps) of a component at a binding energy (286.1 eV) assigned to C—O in a C | 11-06-2014 |
20150210813 | PREPREG AND CARBON FIBER-REINFORCED COMPOSITE MATERIAL - A prepreg includes; sizing agent-coated carbon fibers coated with a sizing agent; and a thermosetting resin composition impregnated into the sizing agent-coated carbon fibers. The sizing agent includes an aliphatic epoxy compound (A) and an aromatic compound (B) at least containing an aromatic epoxy compound (B1). The thermosetting resin composition includes a thermosetting resin (D) and a latent hardener (E), and optionally includes an additive (F) other than the thermosetting resin (D) and the latent hardener (E). The (a)/(b) ratio is within a predetermined range where (a) is the height of a component at a binding energy assigned to CHx, C—C, and C═C and (b) is the height of a component at a binding energy assigned to C—O in a C | 07-30-2015 |
20150353697 | PREPREG AND CARBON FIBER REINFORCED COMPOSITE MATERIALS - A prepreg containing a carbon fiber [A] and a thermosetting resin [B], and in addition, satisfying at least one of the following (1) and (2).
| 12-10-2015 |
20150368857 | PREPREG AND CARBON FIBER REINFORCED COMPOSITE MATERIALS - A prepreg containing a carbon fiber [A] and a thermosetting resin [B], and in addition, satisfying at least one of the following (1) and (2).
| 12-24-2015 |
Patent application number | Description | Published |
20130344325 | REINFORCED INTERPHASE AND BONDED STRUCTURES THEREOF - Embodiments disclosed herein include a structure comprising an adherend and an adhesive composition, wherein the adhesive composition comprises at least a thermosetting resin, a curing agent, and an interfacial material, wherein the adherend is suitable for concentrating the interfacial material in an interfacial region between the adherend and the adhesive composition upon curing of the adhesive composition; a method of manufacturing a composite article by curing the adhesive composition and a reinforcing fiber; and a method of manufacturing an adhesive bonded joint comprising applying the adhesive composition to a surface of one of the two or of different kinds the adherend, and curing the adhesive composition to form an adhesive bond between the adherends. The resulting interfacial region, viz., the reinforced interphase, is reinforced by one or more layers of the interfacial material such that substantial improvements in bond strength and fracture toughness are observed. | 12-26-2013 |
20150184333 | PREPREG AND CARBON FIBER REINFORCED COMPOSITE MATERIAL - A prepreg is formed by impregnating sizing agent-coated carbon fibers coated with a sizing agent with a thermosetting resin composition. The sizing agent contains an aliphatic epoxy compound (A) and an aromatic compound (B) at least containing an aromatic epoxy compound (B1). The sizing agent-coated carbon fibers has an (a)/(b) ratio of 0.50 to 0.90 where (a) is a height (cps) of a component at a binding energy (284.6 eV) assigned to CHx, C—C, and C═C and (b) is a height (cps) of a component at a binding energy (286.1 eV) assigned to C—O in a C | 07-02-2015 |
20150252184 | PREPREG AND CARBON FIBER REINFORCED COMPOSITE MATERIAL - To provide a prepreg and a carbon fiber reinforced composite material that are excellent in adhesion between a matrix resin and carbon fibers and long-term storage stability and also excellent in microcrack resistance due to the increased toughness. The present invention provides a prepreg that includes; agent-coated carbon fibers coated with a sizing agent; and a thermosetting resin composition impregnated into the sizing agent-coated carbon fibers. The sizing agent includes an aliphatic epoxy compound (A) and an aromatic epoxy compound (B1). The sizing agent-coated carbon fibers are in a shape of woven fabric or braid. The thermosetting resin composition includes a thermosetting resin (D), a thermoplastic resin (F), and a latent hardener (G). The sizing agent-coated carbon fibers have an (a)/(b) ratio in a certain range where (a) is the height of a component at a binding energy assigned to CHx, C—C, and C═C and (b) is the height of a component at a binding energy assigned to C—O in a C | 09-10-2015 |
20150315331 | EPOXY RESIN COMPOSITION, PREPREG, AND CARBON-FIBER-REINFORCED COMPOSITE MATERIAL - Provided are: an epoxy resin composition which enables the production of a carbon-fiber-reinforced composite material having excellent tensile strength and compressive strength and suitable as a material for structures; a prepreg; and a carbon-fiber-reinforced composite material. An epoxy resin composition characterized by comprising at least [A] an epoxy resin having a structure represented by formula (1), [B] an epoxy resin having at least one amine-type glycidyl group or at least one ether-type glycidyl group and having a liquid form at 40° C. and [C] a curing agent; and a prepreg and a carbon-fiber-reinforced composite material, each produced using the epoxy resin composition. | 11-05-2015 |