Abstract: An ink jet recording apparatus changes ink suction forces of a purge device according to amounts of ink remaining in an ink cartridge. As it is determined that the amount of ink remaining in the ink cartridge is less than a predetermined amount for a purge operation, second pulse signals which output the smaller number of pulses than first pulse signals, are output to a line feed motor. Accordingly, high viscous ink is sucked from nozzles by a suction pump with a weaker suction force than that when the remaining amount of ink in the ink cartridge is equal to or greater than the predetermined amount. Therefore, even when the amount of ink remaining in the ink cartridge is less than the predetermined amount, that is, when a considerable amount of air is contained in the ink cartridge, the purge operation can be performed without the air being pulled into the ink jet print head by the suction force of the suction pump. Consequently, ink can be stably ejected for subsequent print operation.

Abstract: Printing on a printing medium with ink and treatment liquid having a function of setting ink, by using an apparatus which includes an ink ejection port for ejecting ink, a treatment liquid ejection port for ejecting treatment liquid, a waste liquid accommodating substance for accommodating waste liquid, a first introducing path for introducing waste ink discharged by recovery operation from the ink ejection port into a first portion of the waste liquid accommodating substance, and a second introducing path for introducing, independently of waste ink, waste treatment, liquid discharged by recovery operation from the treatment liquid ejection port into a second portion separated from the first portion of the waste liquid accommodating substance.

Abstract: A printing device for an ink-jet printing system includes at least one row of nozzles for overprinting a first process color, and a row of nozzles for overprinting a correction color. The correction color is different from the process color. A method of correcting failure of a nozzle in a print head of an ink-jet nozzle system is also provided.

Abstract: A dot matrix printing method is provided for printing an image on a printing medium with reduced banding, by moving, with respect to the medium, a printing head in a fast scan direction during a plurality of printing passes. The method comprises writing the image during the plurality of printing passes by mutually interstitial printing steps and/or interlacing steps, wherein the writing step comprises moving the medium with a transport distance step in a slow scan direction perpendicular to the fast scan direction between the printing passes of the at least two sub-images. The sum of all transport distance steps after writing one swath of each sub-image is exactly one head length, and the transport distance steps are performed in at least two different step lengths. An apparatus for dot matrix printing an image using sub-images, and transport distance steps with at least two different step lengths, is also provided.

Abstract: An ink supply arrangement for a pagewidth printing mechanism includes an elongate support structure. A plurality of ink distribution structures is positioned in the support structure. Each ink distribution structure defines a number of ink channels in fluid communication with ink channels of an adjacent ink distribution structure such that the ink distribution structures together define ink channels that extend a length of the support structure. A connector assembly is engageable with an endmost ink distribution structure. An ink supply assembly is engageable with the connector assembly. The ink supply assembly has a number of conduits for supplying ink to respective ink channels. The connector assembly is configured to permit the ink supply assembly to be connected to the endmost ink distribution structure such that each conduit can supply ink to each respective ink channel.

Abstract: Disclosed is an ink set comprising at least a normal yellow ink composition and a dark yellow ink composition, the lightness of the dark yellow ink composition being lower than that of the normal yellow ink composition. This ink set can realize recorded images having excellent color reproduction and image reproduction.

Abstract: A liquid discharge head comprises first and second substrates which are to be mutually adjoined to form plural liquid paths respectively communicating with plural discharge apertures. The first substrate is provided with energy conversion elements, for converting electrical energy into energy for discharging liquid in the liquid paths, respectively corresponding to the liquid paths. The second substrate is provided with detection elements, for detecting a state of the liquid in said liquid paths, respectively corresponding to the liquid paths, and amplification means for respectively amplifying outputs of said detection elements.

Abstract: A thermal bend actuator includes a wafer substrate. An elongate actuator arm is fixed to the substrate at a fixed end. The elongate actuator arm includes a heater layer of a conductive material and a dielectric, resiliently flexible layer. The heater layer defines a heater circuit which is connected to an electrical potential. A working member is fixed to an opposite free end of the actuator arm. Control logic circuitry is positioned on the substrate, between, and generally aligned with, the heater layer and the substrate. The control logic circuitry is interconnected between a data input means and the heater circuit and includes register circuitry connected to the data input means to generate an enabling signal. Firing circuitry is connected between the register circuitry and the heater circuit to close the heater circuit on receipt of the enabling signal so that said electrical potential generates a current in the heater circuit, resistively to heat the heater layer.

Abstract: An ink jet printhead chip includes a substrate. A plurality of nozzle arrangements is positioned on the substrate. Each nozzle arrangement includes a nozzle chamber and an ink ejection port in fluid communication with the nozzle chamber. An actuator is connected to the substrate and is displaceable with respect to the substrate. An ink ejection mechanism is connected to the actuator and is operatively arranged with respect to the nozzle chamber to eject ink from the ink ejection port on displacement of the actuator. The actuator has an actuating arm that has active beams that are configured to be displaced upon receipt of the control signal. The active beams are spaced from corresponding passive beams in a plane that spans the substrate. The spacing is greater than one percent of a length of the actuating arm and less than twenty percent of the length of the actuating arm.

Abstract: An ink jet heater chip having improved thermal. The chip includes a semiconductor substrate, a first metal resistive, a second metal conductive layer on a first portion of the resistive layer and on a second portion of the resistive layer defining a heater resistor element. A passivation layer having a thickness defined by a deposition process is deposited on the second metal conductive layer and heater resistor element. A cavitation layer is deposited on the passivation layer and etched. A dielectric layer is deposited and etched to provide a dielectric layer overlying the first portion of the resistive layer. An electrical conduit via is etched in the dielectric layer. A third metal conductive layer is deposited in the via for electrical contact with the second metal conductive layer. Separately deposited dielectric and passivation layers enable independent control of the thickness of the dielectric and passivation layers.

Abstract: An inkjet recording head and an apparatus including the inkjet recording head are provided for expelling a fine ink drop which is less than or equal to 1 pico-liter (pl). The inkjet recording head has a substrate having a heater for ejecting an ink drop, and an ink feed inlet formed thereon; a barrier layer having an ink passage which communicates the ink feed inlet with the heater; and an orifice plate having an ink nozzle formed facing the heater, the ink nozzle communicating with the ink passage. The barrier layer is made from a negative photosensitive resin. The orifice plate includes a metallic thin film having a thickness in a range of about 0.1 to 2.0 &mgr;m.

Abstract: An inkjet print head with an ink channel unit (and a method therefore) includes a plurality of plates adhered together to form an inkjet head. An adhesive sheet for adhering together the plurality of plates, includes an adhesive element dispersed in a polymer matrix having an average molecular weight of 50,000 or more. The polymer matrix includes a resin.

Abstract: A printing apparatus for printing images on a substrate. The printing apparatus is provided with a first print head connected to a selector valve which in turn is connected to a pair of reservoirs. The first reservoir holds one type of ink while the other reservoir holds a different type of ink. The selector valve has two selectable states. The first state facilitates transmitting ink from one of the reservoirs to the print head, and the second state facilitates transmitting ink from the other reservoir to the print head. The selector valve can be coupled to a controller which is computer operated. Alternatively, the controller can be manually operated.

Abstract: A particulate dispensing device includes a housing having a wall at least partially forming a housing cavity. A dispersive element and a particulate filter are each supported in the housing cavity in spaced relation to one another forming a fluidizing chamber. A dispensing tube extends from the fluidizing chamber for dispensing fluidized particulates or aerosol from the device. The particulate dispensing device generates the fluidized particulates or aerosol from a particulate bed within the fluidizing chamber, and dispense the particulates through the dispensing tube to a downstream delivery site. One or more dispensing devices can be used in a system to deliver the fluidized particulate matter to the delivery site. In one system a delivery line from an associated dispensing device directly delivers particulate matter to the delivery site.

Abstract: A print head and regulator assembly for a printer including: (a) a print head; (b) an ink source; and, (c) a regulator for regulating the flow of ink between the ink source and the print head, the regulator including: (i) a pressurized chamber having an ink inlet in fluid communication with the ink source, an ink outlet in fluid communication with the print head, an opening extending through a chamber wall, and a flexible film covering the opening, the flexible film having an inner surface facing an interior of the pressurized chamber and an outer surface in contact with the ink in the ink source; and, (ii) a lever including a flexible arm positioned in proximity to the inner surface of the flexible film and an opposing arm operatively coupled to a seal that closes the ink inlet when the lever is in a first position and opens the ink inlet when the lever is pivoted to a second position, the lever being biased to the first position, where a higher pressure differential across the flexible film brings about a h

Abstract: An ink cartridge for a printing apparatus providing ink to a print head through a tapered ink supply needle and removably attached to the print head. The ink cartridge includes an ink chamber for containing ink, an ink supply port, a packing member and a valve device. The ink supply port supplies ink from the ink chamber to the print head of the printing apparatus, the ink supply port including an external opening. The packing member is provided in the ink supply port and forms an ink channel for allowing a flow of ink. The packing member seals the ink supply needle of the printing apparatus by fitting therewith. The valve device is contained in the ink supply port and elastically abuts against the packing member. The valve device selectively opens and closes the ink channel in conjunction with the ink supply needle.

Abstract: The described embodiments relate to a print cartridge that can be configured to receive ink from one of at least two possible ink paths depending upon a desired printer configuration. In one exemplary embodiment, the print cartridge has a body configurable to receive ink from at least two different ink supply configurations, and a fluid interface that when coupled with the body effectively selects one of the ink supply configurations.

Abstract: An ink cartridge storage structure and method provide consistent print density and quality by mixing the ink when the cartridge is removed from the packaging and installed to a printer for use. An ink-filled ink cartridge with an ink supply port installable to the head of a printer is stored inside an individual box made to hold the ink cartridge. The ink cartridge is stored inside the individual box so that the ink supply port is at the top when the box is in the normal upright position.

Abstract: An ink accommodating pouch for accommodating ink is produced in the following manner. Two sheets formed of a synthetic resinous material are prepared. Four edges of both the sheets overlap each other and are oriented in the same direction. Three of the aligned edges are fused completely by heat, forming junctions. A resultant product is turned inside out so that the junctions of the three edges are turned inward and protrude inside a pouch. An ink extraction outlet is sealed to the remaining open edge. When the pouch is filled with ink, When the ink accommodating pouch 60 is filled with ink, the sheets near the junctions swell to a protruding curved shape on the outside of the pouch, enabling the pouch to accommodate an increased amount of ink.

Abstract: The ink replenishment frequency is increased in an inkjet head having nozzles for injecting ink. Independent dampers are provided in ink supply passages to impart an acoustic capacitance to the ink supply passages, and therefore a reciprocal action is generated between the pressure chambers and the ink supply passages, whereby the operation of ink replenishment can be stimulated. Accordingly, the ink replenishment frequency can be increased by a factor of approximately 3, without having to provide functional elements in the ink supply passage.

Abstract: An ink-jet recording method is provided in that upon carrying out printing at a high speed as equivalent to laser printers by using the plain paper, the optical density and the coloring property of the image are high with less occurrence of intercolor breed and feathering, and the image has high water resistance. The method contains a step of printing on recording paper having base paper mainly containing pulp fibers and a filler by using a pigment ink of at least one color at a scanning speed of a printing head of 25 cm/sec or more and a maximum ink injection amount in a range of from 6 to 30 mL/m2, the ink having a surface tension in a range of from 20 to 35 mN/m, and an aggregation degree of a pigment contained in the ink in contact with a surface of the recording paper being 5 or more.

Abstract: Upon performing printing using a dye ink and a pigment ink and in addition a treatment liquid making those inks insoluble, two kinds of inks consisted of the pigment ink and the dye ink are used. After applying the pigment ink on a printing medium, the dye ink is applied overlaying with the pigment ink. After mixing these inks on the printing medium, the treatment liquid which makes the inks insoluble, is applied. In the alternative, a mixed ink in which a pigment ink not requiring a dispersant and the dye, is used. After application of this mixed ink on the printing medium, the treatment liquid which makes the ink insoluble, is applied. Therefore, problem of “crack”, “soaking out”, “overflow” or lowering of OD value which can be caused upon reaction of the pigment ink and the dye ink or the mixed ink with the treatment liquid, can be solved to achieve high quality printing.

Abstract: An image recording method including: applying a pretreatment liquid on a surface of a recording material; and discharging a recording ink according to image signals to form an ink image on the pretreatment liquid on the surface of the recording material before the pretreatment liquid applied to the recording material has dried, wherein the recording ink includes a solvent and a component dispersed or dissolved in the solvent, wherein the pretreatment liquid includes a compound depressing at least one of the dispersibility and solubility of the component in the recording ink in an amount of 100 to 80% by weight based on total weight, and wherein the pretreatment liquid has a viscosity of from 10 to 10,000 mPa·s at 25° C.

Abstract: An ink jet printer for forming an image on a recording medium with an active-ray-setting ink, which is hardened by an irradiation of active rays; having a plurality of heads, each of the plurality of heads having a plurality of jet openings for jetting the active-ray-setting ink as ink drops towards the recording medium; and a plurality of active ray sources of irradiate active rays for hardening the ink drops of the active-ray-setting ink landed on the recording medium, wherein each of the plurality of heads and each of the plurality of active ray sources are arranged alternately.

Abstract: This recording-medium conveying device comprises a conveying belt, the conveying belt, a belt charging unit, and a pressing roller. The conveying belt is wound around a driving roller and a driven roller so as to convey a recording medium to an image recording part. The conveying belt includes an insulating layer formed at one side contacting the recording medium. The belt charging unit is provided in contact with the insulating layer so as to charge the insulating layer with a positive charge and a negative charge alternately in a moving direction of the conveying belt by applying an AC bias to the conveying belt. The pressing roller presses the conveying belt against the driving roller so as to prevent the conveying belt from slipping on the driving roller.

Abstract: A fluid ejector head, includes a fluid ejector body adapted to be inserted into an opening of an enclosing medium having an interior surface, and at least one nozzle disposed on the fluid ejector body. The fluid ejector head further includes, a fluid ejector actuator in fluid communication with the at least one nozzle, wherein activation of the fluid ejector actuator ejects a fluid through the at least one nozzle at controlled locations onto the interior surface of the enclosing medium.

Abstract: A method for assembling eyeglasses is disclosed. The method consists of selecting a pair of lenses from an inventory of circular lenses according to a patient's prescription. The circular lenses have the same geometric and optical center, so they do not require ground (grinded) decentration. The round shape also allows the lenses to be rotated within the eyewires when the clasps are open. The lenses are mounted into the annular eyewires of the eyeglasses, rotated so that the cylindrical axis is appropriately aligned, and secured in place so that the lenses may not rotate. The correct pupillary distance is achieved by varying the width of the nosepiece. Bifocal lenses may be selected based on the patient's bifocal prescription and positioned on the existing lens according to the bifocal markings on the eyewires.

Abstract: Eyeglasses having a lens frame removably attached to an eyewear platform using different attachment devices such as magnets, clips, snap connections or other attachment devices that provide effective resistance from said lens frame from becoming involuntarily detached from said eyewear platform. This eyewear allows the user to quickly and easily change lenses or sunglasses.

Abstract: An item of eyewear such as spectacles or sunglasses comprises two lenses and two rearwardly extending temple members, and each temple member is pivotally mounted for movement between in-use and non-use positions by means of a hinge provided in an aperture formed in a side of a respective lens. The temple members pivot through 180° degrees when moving between their in-use and non-use positions, and furthermore the pivot axis of the hinge is generally horizontal.

Abstract: This invention pertains to thin arched prescription lens (58), mainly suited for ophthalmic applications, which are designed to be manufactured as a thin flat sheet, and after or while being manufactured, the thin sheet is folded to the predefined arched shape.

Abstract: An optical lens having a colored coating affixed to the edge of the lens. The apparatus may enhance the cosmetic appearance of eyeglasses by reducing the appearance of the white ring appearing along the perimeter of the face of lens when viewing eyeglasses from the front, and by reducing the appearance of the white film on the edge of lenses when viewing eyeglasses from the side. The apparatus may also reduce the glare of the optical lens from light entering through the edge of the lens.

Abstract: A tinted contact lens for insertion into an eye comprises a contact lens substrate and an iris-simulating pattern on the lens substrate. The iris simulating pattern comprises at least four distinctly colored colorants. A method for making a tinted contact lens for insertion into an eye comprises providing a plate having a surface, and lasing the plate to form at least one depression in the surface of the plate. The depression is of a shape constituting an iris portion pattern. A fluent colorant is introduced into the depression. The colorant is then transferred from the depression to a lens substrate in a manner so that the colorant colors the lens substrate in a colorant pattern of substantially the same shape as the iris portion pattern of the depression.

Abstract: An apparatus for preparing a plastic eyeglass lens includes a coating unit and a lens curing unit. The apparatus is preferably configured to allow the operation of both the coating unit and the lens curing unit. The apparatus may also include a post-cure unit and a controller. The controller is configured to control the operation of the coating unit, the lens curing unit and the post-cure unit. The lens forming unit may include an LCD filter disposed between activating light sources and a mold assembly. The mold assembly preferably includes two mold members held together by a gasket. The gasket preferably includes four protrusions spaced at 90 degree intervals about the gasket. A lens forming composition may include a first photochromic compound, a second photochromic compound and a light effector. The light effector may alter the color of a lens when exposed to photochromic activating light, when compared to a lens formed from a lens forming composition which does not include a light effector.

Abstract: A polarized lens of plastic lamination is provided, which lens is of high quality and highly durable in use while being inexpensively and stably producible without inconsistency in quality. The issues of the prior polarized plastic lens as produced by the blanking and hot machining method, the injection mold-heat bonding method or the sandwiching method are solved by making the most of the ductility and casting performance inherent in diethylene glycol bis(allyl carbonate) and combining therewith the optical characteristics of a polarized film made of poly(vinyl alcohol) resin as well as transparency and durability inherent in a polycarbonate resin plate so as to produce a polarized lens of plastic lamination.

Abstract: A method for generating a progressive surface includes generating the surface from stored delta data and a substantially spherical surface calculated on-the-fly.

Abstract: A flexible transparent mask having a vision blocking portion is positioned over the infant's “good” eye to prevent amblyopia and a large plastic corrective lens is positioned over the eye under correction, and is heat laminated to the mask during manufacture. Since the entire mask is mounted upon and removed from the infant's face in a single motion, separate application and removal of a corrective lens and a conventional patch is avoided for convenience. The mask avoids the cumbersome conventional removal, sterilization and reinsertion of a contact lens to prevent infection, or alternatively, the use of external eyeglasses which the child can peek around, unlike the preferred mask held close to the infant's face. Another embodiment uses a double-sided adhesive ring for affixing the lens over the infant's eye along with a separately applied eye patch over the “good” eye.

Abstract: A novel method for the design and construction of a spectacle lens for the correction of human vision, including the correction of high order aberrations. The lens enables the provision of super-normal vision using spectacles. Different lenses are described for use at a partial or a fuller field of view. The method applies corrective measures based on data obtained from high order wave front measurements of the subject's eye. According to one method, the Modulation Transfer Function (MTF) of the overall eye and lens optical system is optimized. According to another method, the optimization is performed on the wavefront of the overall eye and lens optical system. Both methods use weighted functions in the optimization procedure. This method of high order aberration correction is also applicable for the design of contact lenses and intra-ocular lenses, and for the execution of refractive eye surgery.

Abstract: An embodiment of the invention is directed to a method for determining an anterior or posterior surface parameter of an ophthalmic correcting surface (e.g., custom contact lens “CCL,” customized IOL, custom inlay, customized corneal surface) from a wavefront aberration measurement of an eye. A preferred embodiment relates to determining an anterior surface parameter of a dry, CCL designed to operate at 555 nm. An algorithm sets forth the method comprising misalignment correction, chromatic aberration correction, and power shift correction due to differences between aberration measurement wavelength and peak vision wavelength, and differences between aberration measurement location and aberration correction location. A device readable medium is the preferable vehicle for the algorithm.

Abstract: LCD projection systems that use reflective LCD imager units commonly use one or more polarization beamsplitters to separate the light incident on the imager from the light reflected by one or more respective imagers. The polarizing beamsplitters introduce astigmatism to the image light from the imagers. According to the present invention, the polarization beamsplitters are adapted to reduce the astigmatism.

Abstract: A device for a projector to adaptively receive lamps of different sizes. The device includes a fixing element for fixing a lamp to a support structure of the fixing element. The lamp having a lamp tang. The fixing element provides a locking mechanism for the lamp and is adapted to receive at least two different diameters of lamp tangs. The fixing element for the lamp is movable between at least two positions, to adapt to a focal distance of a specific lamp.

Abstract: A rear-type projection display device is provided, in which even a liquid crystal panel having several point defects is used, the point defects are hardly recognized. According to the present invention, in order not to display the display defects (the bright spots or unlit defects) that take place when a light from a light source transmits a liquid crystal panel having the point defects, means for correcting the display defects is provided on the liquid crystal panel side of a screen.

Abstract: In an arrangement for storing and transporting at least one optical component, it is the object of the invention to protect the optical components from contamination not only during their storage and transport, but also when installing them in operative condition in the optical projection beam path so as to ensure their readiness for immediate operation. This object is met in that every optical component is fastened in an aligned manner to a carrier that is provided in a vessel, and a manipulator acts on the carrier to transfer the carrier into an optical beam path enclosed by a cleanroom through an airlock opening which is formed when the vessel door is open. The arrangement can be used particularly when optics must be stored and manipulated so as to be protected from environmental influences.

Abstract: A flexible mounting assembly is provided for a retroreflector assembly. The mounting assembly has a base member comprising three radial arms situated at substantially 120° from each other. In a preferred embodiment, a connector is mounted to the end of each arm, with the connector connecting the arm of the base to a resilient support member. Each support member has a pair of co-planar receiving surfaces, for receipt thereon of a mounting block, which mounting block is adhered to the underside of the retroreflector. The co-planar receiving surfaces of each of the support members are separated by a notch in the structure of the support member. In other embodiments, the radial arms of the mounting member and the connectors can be uniformly formed members. Another embodiment could have the mounting blocks an integrally formed part of the support members; i.e., integrally extending out from the co-planar surfaces.

Abstract: In an apparatus for watching around a vehicle, an internal reflection preventive film 37 for preventing stray light from undergoing total reflection in a prism is formed outside an effective area with respect to an imaging lens 9 disposed to the rear side 8B of the prism. Thus, the quantity of stray light is reduced by preventing the total reflection.

Abstract: An apparatus is provided for automatically reducing glare produced from a spatial scene by reducing the intensity of light rays propagating from points in the three-dimensional spatial scene towards an optical element having a field of view. Further, an apparatus is provided that automatically reduces interfering illumination produced from an illumination source by reducing the intensity of light rays propagating from the illumination source towards a sensor having a field of view of radio communication. Both apparatus include an electro-optical element having an optically transparent surface including a plurality of pixels through which the field of view of the optical element or the sensor passes. Each pixel has a controllable light transmittance for selectively reducing the intensity of incident light rays propagating from one or more points from the illumination source, through the pixel, then towards the sensor or optical element.

Abstract: Various configurations of a virtually imaged phased array (VIPA) generator in combination with a mirror to compensate for chromatic dispersion. A VIPA generator produces a light traveling from the VIPA generator. In some embodiments, a variable curvature mirror is positioned to reflect the light back to the VIPA generator. A rotation axis around which the mirror is rotated and a translation path for the rotation axis are provided, to change the curvature of the mirror where the output light is reflected. In other embodiments, a plurality of mirrors have different surface curvatures. A holder has a rotation axis and holds the plurality of mirrors equidistantly from the rotation axis. The holder is rotatable around the rotation axis to bring a different, respective mirror in position to reflect light produced by a VIPA generator back to the VIPA generator. In other embodiments, a rotating mirror is rotatable about a rotation axis to reflect light produced by a VIPA generator to a respective fixed mirror.

Abstract: A mirror which the viewer's reflection rotates clockwise or counterclockwise along with the rotation of the mirror.

Abstract: In a light reflection pattern formed on a bottom surface of a light conductive plate, an inclined surface of grooves positioned at a predetermined distance or farther from a lamp includes a non-flat portion whose inclination angle varies gradually. Light rays traveling in the light conductive plate are reflected at the non-flat portion with an appropriate angle suitable for increasing a viewing field angle and exit out from a top surface of the light conductive plate. Consequently, the viewing field angle at the portion positioned at a predetermined distance or farther from the lamp can be increased.

Abstract: A beverage container holder and lighting arrangement is provided having a base and a wall defining a space for receiving a beverage container. A power source having a first and second conducting means is provided The power source is in electrical communication with a light source. When placed in the beverage container holder and lighting arrangement of the present invention, a beverage container having an appropriate label will complete a circuit and, thereby, cause the light source to be illuminated.

Abstract: The weighted end cap for a flashlight, replacing the standard end cap of such a light, including a weighted component generally hemispherical in configuration, integrally formed with a polygonally sided component, to prevent rolling of the flashlight during usage, and having an integral sleeve extending downwardly therefrom, presenting threads, generally of the external type, for use in threading into the end of a standard flashlight, now allowing the flashlight to be used as a tool, weapon, in addition for the standard lighting purposes, and to prevent its rolling or movement when rested upon a surface as during non-usage or storage.