203 results about "Scratch marks" patented technology

An optical fingerprint imaging system comprises an optically transparent platen and a protective film removably attached to the platen with an adhesive. The protective film protects the platen from scratches, pits, and other surface damage and is substantially chemically inert to petroleum-based substances which may come into contact when receiving a finger pressed to take a fingerprint image. The adhesive has a selected cohesive strength that allows the protective film and adhesive to be removed from the platen without leaving behind an adhesive residue. The protective film can be replaced periodically as part of maintenance of the platen to allow continued acquisition of accurate fingerprint images. A method for protecting a platen is also disclosed.

The invention provides a surface inspection apparatus and a method for inspecting the surface of a sample that are capable of inspecting discriminatingly between the scratch of various configuration and the adhered foreign object that occur on the surface of a work target when the work target (for example, an insulating film on a semiconductor substrate) is subjected to polishing process such as CMP or grinding process in semiconductor manufacturing process or magnetic head manufacturing process. In the invention, the scratch and foreign object that occur on the polished or ground surface of the sample is epi-illuminated and slant-illuminated by use of approximately same light flux, the difference between the scattered light intensity emitted from the shallow scratch and that from the foreign object when epi-illumination is applied and slant illumination is applied to thereby discriminate between the shallow scratch and the foreign object, and the directionality of the scattered light when the epi-illumination is applied and the slant illumination is applied is detected to thereby discriminate between the linear scratch and the foreign object.

It is possible to inspect scratches and staining on a wafer surface on the basis of an LPD map obtained from a particle counter 11, by providing a means 21 for detecting aggregation of clustered point defects (LPD) from two-dimensional distribution information 30 for such fine LPD on the surface of a silicon wafer, and an improvement in the inspection efficiency and the precision of judgements of “defective” status can be achieved. Furthermore, the system is devised so that the trend of generation of scratches and staining in a specified process can easily be detected by accumulating wafer surface information such as scratch information, staining information and the like for the wafer surface detected by a wafer surface inspection device 11 (especially as image information or numerical information), and superposing sets of information thus accumulated. Plans for improving processes can be made by both the wafer supplier and wafer consumer by sharing such information with both parties.

A manual scuff mark removal tool for removing random scuff marks from floor surfaces has an angulated head with a pad support block which has a bottom surface and a front edge surface and defines toe and heel corners and edges. A handle projection is defined by the head and is oriented in obtuse angular relation with the pad support block and defines a handle receptacle receiving a handle with a hand grip. A weight is preferably encapsulated within the head for continuously applying a weight induced downward force to a floor during scuff mark removal. A replaceable pad is secured to and covers the bottom surface, front edge surface and the toe and heel corners of the pad support block and by selectively positioning the head of the tool, selected portions of the pad engages the floor surface being cleaned.

In a cured product having a thickness of 60 μm obtained from an actinic energy ray-curable composition of the present invention, when a scratch mark is made at a vertical load of 235 mN using a diamond indenter with a tip diameter of 15 μm, the scratch mark is repaired by a self-repairing ability under an atmosphere at 25° C. and at a relative humidity of 50%. Therefore, the actinic energy ray-curable composition is useful as coating agents or paints for products where scratch resistance is required.

The present invention is characterized by the following: incident illumination and oblique illumination are performed on a scratch and a foreign material, which have been made on a surface of a polished or a ground insulating layer, with substantially the same luminous flux; and on the basis of a correlation such as a ratio of intensity of scattered light generated by the shallow scratch and the foreign material between the incident illumination and the oblique illumination, the shallow scratch is discriminated from the foreign material.

The present invention is a method for determining the location of and distinguishing aggressive diamonds from active diamonds on a diamond conditioner disc, comprising: (a) contacting a diamond conditioner disc with a hard surface, wherein the diamond-containing side of the diamond conditioning disc is facing the hard surface, (b) pushing the conditioner disc a sufficient distance that all diamonds could possibly be scratching the surface at the same time and at least a distance corresponding to the length of the said diamond conditioner disc (c) observing number and position of the scratches left by diamonds on the hard surface to determine the number and position of active diamonds on the diamond conditioner disc, and (d) selecting the diamonds, the marks for which are the most pronounced and which comprise 50% or more of the total furrow area observed for all of the active diamonds in descending order of furrow are plus any diamonds in excess of the number needed to achieve said 50% or more whose individual furrow area is 2% or more, which diamonds are determined to be aggressive diamonds, or impressing the diamond conditioner disc under a load onto a hard surface and the impression of the most aggressive diamonds in the hard surface being confirmed by microscopic examination to in turn confirm the position and aggressiveness of the aggressive diamonds observed or (e) contacting a diamond conditioner disc with a hard surface, wherein the diamond-containing side of the diamond conditioning disc is facing the hard surface, (f) pushing the conditioner disc a sufficient distance that all diamonds could possibly be scratching the surface at the same time and at least a distance corresponding to the length of the said diamond conditioner disc (g) observing number and position of the scratches left by diamonds on the hard surface to determine the number and position of active diamonds on the diamond conditioner disc, (h) the hard surface further comprises a layer of contrasting material such that when the diamond conditioner disc moves across the hard surface, the said diamond conditioner disc crosses the limits of the layer entirely from one end to the other and scratches the layer of contrasting material on the hard surface thereby leaving a visible mark, (i) the said layer is between 8 and 15 microns thick and (j) selecting the diamonds which cut entirely through the said layer allowing backlighting to be easily viewed.

The invention relates to a stainless steel surface defect detection method based on machine vision. The method includes S1) collecting a surface image of stainless steel to be detected by adopting a CCD industrial camera; S2) subjecting the collected surface image of the stainless steel to be detected to two-dimensional defect detection based on Blob analysis; S3) subjecting the collected surface image of the stainless steel to be detected to three-dimensional defect detection according to frequency-domain-based Fourier transform; and S4) separating out the defective stainless steel according to two-dimensional and three-dimensional defect detection results. For two-dimensional defects, a surface detect detection algorithm based on the Blob analysis is provided, and a frequency-domain-based Fourier transform algorithm is provided for three-dimensional defects. Common surface defects, such as scratch, oil stain, rust, air bubbles, cracks, impurities, rolling marks and roll marks, of stainless steel products can be effectively detected. In addition, the detection results of a scheme are accurate and the detection efficiency is high.

An optical recording medium having a scratch-off material layer includes a transparent substrate, a reflective layer formed on the transparent substrate, a protective layer formed on the reflective layer, information formed on a surface of the protective layer, and at least one opaque scratch-off material layer formed on the protective layer for disguising the information.

The invention belongs to the technical field of functional materials, and particularly discloses a polyvinyl alcohol membrane with a self-repair function implemented by the aid of dynamic covalent bonds and a method for preparing the polyvinyl alcohol membrane. The dynamic covalent bonds are formed by the aid of Diels-Alder reaction, so that the polyvinyl alcohol membrane can have the self-repair ability. The method includes carrying out graft reaction on polyvinyl alcohol and furan derivatives to obtain furan ring grafted and modified polyvinyl alcohol; adding certain cross-linking agents into the furan ring grafted and modified polyvinyl alcohol and carrying out Diels-Alder reaction to obtain the polyvinyl alcohol membrane with the self-repair function. Diels-Alder reaction can be carried out on the certain cross-linking agents and furan groups. The polyvinyl alcohol membrane and the method have the advantages that the polyvinyl alcohol membrane is excellent in separation performance and hydrophilic performance just like common polyvinyl alcohol membranes, and cross-linked structures of the polyvinyl alcohol membrane are excellent in temperature responsiveness and thermal reversibility; the polyvinyl alcohol membrane is excellent in self-repair ability for drawing and scratching marks under simple conditions, and the gas tightness and the water resistance of the polyvinyl alcohol membrane in wet-state environments can be obviously improved; the polyvinyl alcohol membrane prepared by the aid of the method can be used in broad fields such as the fields of permeation and evaporation membrane separation and the fields of proton exchange membrane fuel cells, catalyst carrying and ion exchange membranes.

The invention relates to a testing method of metallographic structure, particularly relates to a method of displaying austenite structure quickly and easily. According to the invention provided techniccal scheme, the method includes: first use metallographic abrasive paper to grind the surface to be tested of stainless steel strip until grinding crack on the surface to be tested is uniform and the grinding crack has same direction; then using polishing cloth to polish the grinded surface, and there should be no obvious scratch on the surface when observing under 100X microscope after polishing; then using burette to drop 1-50 drops prepared solution on the polished surface for etching the surface, using soft cloth to wipe etched surface for five to six secondes, at last washing with water and using alcohol to wipe clean, putting clean surface under microscope to observe austenite stainless steel structure. Using the method can checkout matrix structure of materials in short time.

The invention provides high-durability floor wax, and belongs to the technical field of a furniture cleaning agent. The high-durability floor wax comprises the following raw materials by weight: 20 to 30 parts of wax, 3 to 6 parts of beewax, 2 to 3 parts of oxidized polyethlene wax, 5 to 8 parts of Vaseline, 2 to 5 parts of triethanolamine, 5 to 10 parts of stearic acid, 3 to 7 parts of cellulose, 1 to 3 parts of butoxy triethyl phosphate, 2 to 4 parts of diglycol diethyl ether, 1 to 3 parts of dioctyl maleate, 2 to 3 parts of surface active agent, 4 to 6 parts of simethicone, 2 to 4 parts of emulsifying agent, 3 to 6 parts of odorless kerosene, 3 to 5 parts of ammonia water, 1 to 2 parts of benzimidazole methyl carbamate, 2 to 3 parts of silane coupling agent and 200 to 400 parts of water. With the adoption of the floor wax provided by the invention, the glossiness of the surface of a floor can be effectively improved, scratches can be shielded, and the damage of the friction on the floor surface to the floor can be effectively prevented; and after being subjected to a friction test, the floor wax also has high brightness and has no scratch.

Disclosed is a surface protective film, a method for fabricating the same, and pouch, and a method for fabricating the same. The surface protective film includes a stack of films including a middle layer, and a first skin layer and a second skin layer on opposite sides of the middle layer, wherein at least one of the first skin layer and the second skin layer is formed of a resin having a hardness lower than a hardness of a surface to be protected by the surface protective film, and the middle layer is formed of a resin including high density polyethylene, thereby permitting protection of a display surface without formation of scratch at a very low cost compared to the related art without aging and with slip.

The invention relates to an automobile cleaning and polishing agent capable of avoiding scratches as well as preparation and application of the automobile cleaning and polishing agent. The automobile cleaning and polishing agent is prepared from components in percentage by mass as follows: 2%-5% of carnauba wax, 3%-7% of silicone oil, 3%-4% of a penetrating agent, 9%-15% of an emulsifier, 7%-12% of alkyl polyglycoside, 2%-6% of a co-emulsifier and 55%-73% of a detergent assistant. The automobile cleaning and polishing agent is prepared from bio-degradable and environment-friendly raw materials, has extremely low surface tension and great permeability and can completely remove traffic films, dust, grease and the like on the surface of the automobile, the automobile does not need to be wiped with sponge in the cleaning process, no scratches are produced, waxing and polishing can be finished in the automobile cleaning process, the secondary waxing process is avoided, the automobile cleaning procedure is greatly simplified, the work efficiency is improved, and the automobile cleaning and polishing agent has the advantages of water saving, energy conservation, time saving and high efficiency.

The invention discloses a scratch-resistant polyamide composition and a preparation method thereof. The scratch-resistant polyamide composition is prepared from the following raw materials in percentage by mass: 40-80% of a polyamide resin, 10-40% of a glass fiber, 0.5-4% of organo-siloxane, 0.3-1.5% of polytetrafluoroethylene, 5-15% of a polyethylene-crylic acid ionomer, 0.2-1.0% of an antioxidant and 0.1-1.0% of a lubricant. The invention further discloses a preparation method of the scratch-resistant polyamide composition. The scratch-resistant polyamide composition disclosed by the invention is good in scraping resistance, mechanical property and coloring property, no conspicuous scratch marks are caused in five-finger scratch tests, and components and elements made of the composition are not easily scratched in long-term use.

A display device and a manufacturing method thereof are provided. The display device includes a light guide, a light source, and a brightness enhancement film (BEF), and a dual brightness enhancement film (DBEF). The light guide has a first edge along a first direction and a second edge adjacent to the first edge corresponding to the light source. The BEF is disposed on the light guide and has a plurality of prisms along a second direction which rotates from 0 to 90 degrees with respect to the first direction. The DBEF has a transmission axis along a third direction which also rotates from 0 to 90 degrees with respect to the first direction.