Abstract: The present invention provides a light emitting device comprising a first light emitting portion that emits white light at a color temperature of 6000K or more and a second light emitting portion that emits white light at a color temperature of 3000K or less, which include light emitting diode chips and phosphors and are independently driven. The present invention has an advantage in that a light emitting device can be diversely applied in a desired atmosphere and use by realizing white light with different light spectrums and color temperatures. Particularly, the present invention has the effect on health by adjusting the wavelength of light or the color temperature according to the circadian rhythm of humans.

Abstract: A light emitting device includes a plurality of LED strings connected in parallel, wherein: each of the LED strings includes a plurality of LED chips connected in series to each other; in the LED string, ultraviolet light LED chips and blue LED chips or violet LED chips and blue LED chips are connected in series to each other; and the number of the ultraviolet light LED chips or the number of the violet LED chips is the same as the number of the blue LED chips in each of the plurality of LED strings.

Abstract: The invention relates to a lighting device comprising a light source (1) that emits incoherent light with a total radiation power P and has a radiation-emitting area (S) divided into a plurality of subareas (Si), wherein assigned to each subarea (Si) is a light ray (2) having a radiation power Pi and the sum of the radiation powers Pi is equal to the total radiation power P, and disposed after said light source (1) is an optical element (4) having a decoupling surface (5) and a total reflection angle (?c) assigned to said decoupling surface (5), said decoupling surface (5) being shaped so that at least for a portion of said light rays (2) the angle (?) of incidence on said decoupling surface (5) is smaller than the total reflection angle (?c), and the radiation power of said light rays collectively is greater than a predetermined fraction, equal to at least 50%, of the total radiation power P.

Abstract: An LED lamp includes: a substrate; a cluster of LEDs, which are arranged two-dimensionally on the substrate; and an interconnection circuit, which is electrically connected to the LEDs. The LEDs include a first group of LEDs, which are located around the outer periphery of the cluster, and a second group of LEDs, which are located elsewhere in the cluster. The interconnection circuit has an interconnection structure for separately supplying drive currents to at least one of the LEDs in the first group and to at least one of the LEDs in the second group separately from each other.

Abstract: The present invention is a photographic roll film which includes a photographic film strip and a light shielding paper secured to the photographic film strip. The backing paper has a leader which includes at least one cinch tab extending out of a plane of the light shielding paper. The present invention is a photographic roll film which includes a photographic film strip and a light shielding paper secured to the photographic film strip. The backing paper has a leader which includes a front edge, and two side edges. At least one cinch tab extends out of a plane of the backing paper, the cinch tab formed by the front edge, a side edge and a cut forming a cut angle of greater than 90.degree. with a long axis of the leader. The present invention is a photographic roll film which includes a photographic film strip and a light shielding paper secured to the photographic film strip. The backing paper has a leader having a front edge.

Abstract: A leader card attachable to a photographic filmstrip having a lead end with at least one aperture. The leader card includes (1) a piece of material having a tab portion and (2) at least one hook secured to the material. The hook is sized to be extendible through the aperture to secure the leader card and lead end of the filmstrip together. The tab portion inhibits the hook from being removed from the aperture.

Abstract: Successive exposed photographic films are connected, either individually or in groups of two or more, to discrete sheet-like leaders which are transported along an elongated first path extending through the baths and the dryer of a developing unit. The leaders are separated from the respective webs downstream of the developing unit but upstream of a copying unit for developed films, and the separated leaders are directed into a second path to be gathered in a receptacle. The separation involves severing the leading end of each web close behind the respective leader, and the thus separated webs are caused to continue to advance along the first path through a magazine and thence into the copying unit.

Abstract: A spool assembly for use in a printer assembly which allows substantially the entire web of photographic paper to be exposed in the printing process. The printer assembly includes a web, a printer operative to expose photographic images on portions of the web, and a drive means operative to systematically convey the web of photographic paper through the printer. Extender strips of non-photographic material are attached to the ends of the web of photographic paper to allow the end of the web proximate the respective extender strip to be positioned within the printer for exposure purposes. The spool assembly includes a spool formed of a plastic material and a retaining clip mounted thereon to engage the related extender strip. The spool is adapted to maintain the paper in a rolled configuration and are preferably constructed with a central portion of reduced diameter which contains a retaining clip.

Abstract: A bulk film loader for use in daylight conditions including a light-tight casing for receiving cartridges of film in strip form. The film for a desired number of exposures is transferred from a cartridge onto a camera film feed spool or cassette. A guillotine extending into the casing cuts the film. For certain films, the loader also includes a roll of opaque leader strips in a separate cartridge. The strips are separable into individual leaders which can be attached to the opposite ends of a measured quantity of film.

Abstract: A virtually transparent magnetic layer is included as an additional layer in a color negative film. Information exchange between various users of the film--such as (for example) the film manufacturer, the camera user, the dealer and photofinisher--is carried via plural longitudinal magnetic tracks on the film that begin and end in individual frames. Each track is dedicated to the writing and reading of a predetermined set of parameters related to the corresponding frame. All data is recorded as N-bit character where N is preferably six. Each track is preceeded by certain six-bit character called an ID sentinel. On-film magnetic data recording by the film manufacturer uses an ID sentinel different from that employed in the camera. The camera automatically prevents exposure of any frame bearing a camera ID sentinel, thus providing protection from double exposures.

Abstract: An imaging sheet roll has a spool on which is wound a film coated with photosensitive microcapsules to form a roll of film between flanges extending radially at the opposite ends of the spool and provide with annular step portions, and a leader tape of a material that is impermeable to light is bonded to the end portion of the film at which the latter unwinds from the spool and has a transverse width greater than that of the film. The leader tape is wound around the annular step portions of the flanges to seat thereagainst and prevent irradiation by light of the photosensitive microcapsules coating the film wound on the spool.

Abstract: A film cassette is disclosed wherein a filmstrip beginning with a relatively short non-protruding leader portion can be advanced automatically to the exterior of the cassette responsive to rotation of a film spool in a film unwinding direction. The filmstrip has one metering perforation per film frame in a relatively long imaging portion and several much closer spaced take-up perforations in its leader portion. Preferably, the take-up perforations are located along a different longitudinal edge of the filmstrip than the metering perforations are located, to positively prevent the possiblity of mistaking one of the take-up perforations for one of the metering perforations in a camera.

Abstract: A film cassette contains a film spool which is rotatable in an unwinding direction to propel a filmstrip including an integral film leader out of the cassette and is rotatable in a winding direction to wind the filmstrip including its film leader back into the cassette. The film leader has a magnetic area on which alterable data can be magnetically written and read to indicate whether the filmstrip is completely exposed or is only partially exposed. Thus, when the film leader is wound into the cassette the data will be protected and when the film leader is propelled from the cassette the data will be made accessible to read and alter it.

Abstract: A film leader card has a series of holes for receiving the projections on a succession of endless timing belts in a film processor to advance the card and an attached filmstrip through the processor. A middle-most hole in the series of holes is spaced relative to an adjacent hole in the series to match the pitch of the projections. Each of the holes in the series forward of the middle-most hole has a pitch slightly greater than the pitch of the projections. Each of the holes in the series rearward of the middle-most hole has a pitch slightly less than the pitch of the projections. Consequently, the leader card is projection-driven only at its middle-most hole since the projections received in the forward and rearward holes are substantially clear of any contact with the edges of those holes. This clearance between the forward and rearward holes and the projections facilitates transfer of the leader card from one timing belt to another timing belt in the film processor.

Abstract: Film (13) in a film cassette (15) is connected to a take-up reel (19) in a film transport mechanism (11) by means of mating connectors (20,30) attached to leaders (27,29) on the cassette film (13) and on the take-up reel (19). The connectors (20,30) are retained in contoured slots (41,51) on the cassette (15) and on the film transport mechanism (19) so that when the cassette (15) is loaded onto the transport mechanism (19), the connectors (20,30) will be in alignment. By arranging the connectors (20,30) for connection and disconnection in a direction perpendicular to the direction of travel of the film (13), an efficient connection can be effected and the connection remains stable during the operation of the film transport mechanism (11).

Abstract: The present arrangement includes a first tape leader which can be readily and automatically coupled to a second tape leader. In a preferred embodiment the first tape leader is connected to be wound on a take up reel while the second tape leader is connected to a tape to be pulled from a supply reel. The first tape leader has one end formed into a mushroom like tab with a supporting stem. The second tape leader has a locking aperture at one end thereof which is proportioned so that a wide section thereof can fit over said mushroom like tab while a narrow section thereof will accept the stem but block passage of the mushroom tab therethrough. Accordingly when the tab is passed through the wide section and the leader is moved (pulled) toward the narrow section of the locking aperture, the tab and part of the stem become locked in the narrow section. Hence the leaders are locked, or buckled, to enable the first tape leader to pull the second leader.

Abstract: A forms leader is disclosed for use in printing of business forms by a printing device. The leader includes a rectangular sheet of flexible material having a series of line holes formed along the edges of the sheet. The sheet is folded along a crease to define a front portion of the sheet which is of less length than a rear portion. The crease is further positioned so that the line holes formed on the front portion align with those of the rear portion. An adhesive strip is formed across the front surface of the rear portion of the sheet, the strip being positioned along the surface so that at least a portion thereof is above a line corresponding to the bottom edge of the front portion. The adhesive has a relatively low tack, whereby the form can be removably secured to the adhesive with the front portion of the sheet extending over a portion of the form and the line holes of the form aligning with those of the sheet.

Abstract: A magnetic recording medium comprising a support having coated thereon a magnetic layer and a leader tape connected to at least one end of the support and the magnetic layer, the leader tape comprising a support having coated thereon a cleaning layer containing an organic high molecular weight powder and a binder, and an antistatic layer being provided on at least one surface of the leader tape.

Abstract: Device permitting the winding and unwinding of a tape. It comprises a feed reel on which is wound a tape, and a take-up reel equipped with a tape driving strap. The leader of the tape and the free end of the strap are provided with mutual coupling means and are positioned so as to face the interior of a mechanical member for carrying out the operations of coupling and uncoupling the strap with respect to the tape. The device according to the invention is used more particularly in equipment for recording and reading data on a support such as a magnetic tape, a photographic film, a perforated tape, etc.

Abstract: A film supply cassette comprising a hub, axially spaced end flanges, a trailer secured to the hub having an opening to cooperate with a sensor, a length of light-sensitive film convolutely wound about said trailer, and a leader comprising a vapor coated polyethylene/polyester laminate bonded to paper and wrapped about the film between the flanges and being wider than the film.

Abstract: A leader tape for use in connection with a magnetic recording tape is disclosed. The leader tape is connected to one or both ends of a magnetic recording tape in order to clean components of the recorder such as the head of the recorder in which the tape is used. The leader tape is comprised of a support base having a cleaning layer coated thereon. The cleaning layer is comprised of a binder having dispersed therein an organic thermoplastic high molecular powder having a particle size of 0.1 to 20 .mu.m and an organic thermosetting high molecular powder having a particle size of 0.1 to 10 .mu.m. The leader tape has a light percent transmittence of 20% or more.

Abstract: Cleaning tape having a cleaning layer formed on one or both sides of a base is disclosed. Said cleaning layer is composed of (1) a binder, (2) an organic polymer powder whose particle size is 3.mu. or more, and (3) an inorganic solid powder whose particle size is 3.mu. or less.

Abstract: A film magazine contains a roll of film having an image portion and a leader. The filmstrip is perforated at predetermined intervals with larger perforations in the image portion than in the leader. A camera mechanism is disclosed which uses the perforations to advance the filmstrip, detects the size of the perforations, and meters only when a large, image portion perforation is advanced to a predetermined position in the camera.

Abstract: New means are providedfor securing the free end of a roll of photographic film against unwinding. The means comprises a strip of flexible plastic which clings to the photographic film, at the free end of the roll and also on the body of the roll adjacent the free end.

Abstract: This invention relates to a leader or trailer for a magnetic tape, which comprises a plastic support member, a coated layer consisting essentially of a pigment and binder on the surface of the plastic support and a lubricant layer on the back side of the plastic support, the pigment consisting of a mixture of at least two solid powders each having a mean grain size of (A) 0.002 to 3 microns and (B) 5 to 35 microns and the lubricant layer being coated in a proportion of at least 0.1 mg/m.sup.2.

Abstract: A joint for the ends of an elongated perforated film strip which is movable alongside an annularly closed guide path by a conveying means, wherein on the one end of the film strip corresponding in length substantially to that of said guide path a follower is secured which projects from the plane of the film, and wherein at the other end of said film strip a lock-in aperture is formed for free motion engagement of said follower. By reason of this free motion engagement, the film strip joint renders possible, within certain limits, to equalize length tolerances of the film strip, plus at the same time the automatic uncoupling of the film strip ends.

Abstract: An elongated flexible leader for inserting into a film processor and guiding a roll of undeveloped film therethrough. The leader is attached to the film by inserting a tongue which is part of the leader through an aperture in one end of the film.

Abstract: A tape leader, for example, for magnetic recording tape, is comprised of an electrically conductive metal film of aluminum, copper or the like, which is bonded or laminated between two flexible synthetic resin films, for example, of polyester resin, so as to be protected from damage or corrosion by the flexible resin films. Such tape leader may be detected by a resonance sensor or the like.

Abstract: An article of manufacture has a web wound on a cylindrical hub and a web leader wound between the hub and the web. The web leader is stiffer than the web and has a first end at the hub. A first leader portion has a uniform thickness greater than the thickness of the web and extends from the first end to a second leader portion. The second leader portion tapers from the uniform thickness at the first leader portion to a reduced thickness at a second end which is attached to the web. The tapering second leader portion overlays the first end of the web leader, whereby the web leader between the hub and the web constitutes a cylindrical support for the wound web.The disclosure extends to methods and articles for facilitating the winding of the web on a cylindrical hub, employing the above mentioned web leader.

Abstract: A tape storage unit comprises a single reel having flanges between which tape is stored and protected by a strippable leader strip wound about the tape and snapped into grooves in the flanges. A tape transport compatible with the reel includes a second reel with leader receiving grooves formed in its flanges, there being structure to guide and urge the leader toward the grooves in the reels in either direction of tape travel; also, novel drive systems for the reels are provided.

Abstract: A leader strip is connected with a tape at one end of the tape; and the leader strip has characteristic lengthwise unit bending stiffness which is substantially greater than leader characteristic widthwise unit bending stiffness. Further, the overall width of the leader typically exceeds the overall width of the tape, and the edge portions of the leader are engageable with non-grooved inner walls of reel flanges to be frictionally retained in position between the inner walls. A magnetic tape transport is provided with two such reels between which the tape and leader are transported.

Abstract: Leader strip for motion picture films is described which is composed of a substrate of cellulose acetate or polyester, a gum-removing layer comprising an organic binder selected from the group consisting of cellulose esters, polyurethanes, polyacrylonitrile, copolymers of acrylonitrile and vinylidene chloride, and epoxy resins, a gum-shearing agent of finely divided polymeric particles, said agent being bonded by the organic binder to the substrate, said gum-shearing agent being a member selected from the group consisting of polyesters, polyamides, polyimides and polyolefins, said polymeric particles having a size less than about five mils.

Abstract: An electric shutter is opened and closed to effect an exposure in dependence upon the energization of an electromagnet. A switching circuit controls the energization of the electromagnet in accordance with various exposure information, such as diaphragm setting and film sensitivity. An exposure control circuit comprised of a series connection of a diode and a variable resistor is connected in parallel with the electromagnet and adjustably controls the time at which the electromagnet is deenergized to accordingly effect closing of the shutter such that the electromagnet delay time equals the shutter sector advancing time to thereby compensate for fluctuations between the two times.

Abstract: The disclosure relates to an improved means for assuring the proper alignment of the leader on the end of a film strip for a roll of film disposed in a cartridge, whereby, when the cartridge is placed in a viewing or reproducing machine, the end of the strip will be properly picked up and threaded into the machine, wherein the strip has a friction portion that engages with the exit or entrance throat of the cartridge and an indicator on the strip to show when the film is pulled out to the proper position for threading into a machine.