87 results about "Recording layer" patented technology

There is provided an on-press development type lithographic printing plate precursor including a support, and an image-recording layer provided on the support, in which the image-recording layer contains (1) or (2).(1) a borate compound represented by Formula (1) and an electron-accepting polymerization initiator(2) a borate compound represented by Formula (1a)in Formula (1) and Formula (1a), R1, R2, R3, and R4 each independently represent a substituted or unsubstituted alkyl group, a substituted or unsubstituted aryl group, a substituted or unsubstituted alkenyl group, or a substituted or unsubstituted alkynyl group, and R1, R2, R3, and R4 may each independently have a ring structure. Provided that at least one of R1, R2, R3, or R4 is different from the other. M+ represents a cation. Ma+ represents an iodonium cation.

A magnetoresistive effect element includes a reference layer, a barrier layer, a recording layer, and a channel layer that are disposed on top of one another, and a first terminal connected to the reference layer, and a second terminal and a third terminal connected to the channel layer. The channel layer includes a first channel layer and a second channel layer, the first channel layer has electrical resistance larger than electrical resistance of the second channel layer, the second terminal is connected to the first channel layer, and the third terminal is connected to the second channel layer, a write current flows between the second terminal and the third terminal via the first channel layer and the second channel layer, and a read current flows between the first terminal and the third terminal.

Disclosed is a heat-sensitive recording body which has, on one side of a paper support, a primer layer containing hollow particles having a hollow ratio of 80 to 98% and a heat-sensitive recording layer containing a leuco dye and a color developer in this order, and on the other side of the paper support, a back layer containing a pigment, wherein the back layer has a Gurley smoothness of 500 seconds or more, and the hollow particles are contained in a proportion of 5 to 30% by mass in the total solid content of the primer layer.

A positive-working lithographic printing plate precursor including a support and an image-recording layer formed on the support and consisting of a positive-working photosensitive resin composition, in which the positive-working photosensitive resin composition contains a compound having at least one electron-withdrawing group and at least one phenolic hydroxyl group in one molecule, an alkali-soluble resin, and an infrared absorber, and the electron-withdrawing group excludes a sulfonyl group; and a method of preparing a lithographic printing plate using the positive-working lithographic printing plate precursor.

The application belongs to the field of optical storage, and specifically discloses an optical disc data reading method and device. The optical disc involved in the application comprises a plurality of data layers, each data layer comprising a plurality of data blocks. The optical disc data reading method comprises the following steps: focusing imaging light to a preset data layer of the optical disc; obtaining images of each data block in the preset data layer based on the imaging light when the optical disc rotates; controlling the imaging light to stably focus on the preset data layer according to the brightness and the definition of each data block image, and then reading corresponding data information based on the images of each data block. According to the application, the defocus distance and direction can be accurately predicted in combination with the definition evaluation function, and real-time focus control can be performed in the process of continuous rotation of the optical disc. Data is read in a pure image mode, and focus servo control can be completed without making a data recording layer with a track in the optical disc, so that reading of hundreds of layers of data in a multi-dimensional storage optical disc can be realized.

A display technology capable of displaying special images is provided. A display body (1) includes: a light-shielding layer (12) having a plurality of slits (SL) arranged at intervals in the width direction; and an image recording layer (22) spaced apart from a main surface of the light-shielding layer (12) and opposite it, and recording a latent image that is made visible by being partially hidden by the light-shielding layer (12).

An optical recording medium capable of suppressing a decrease in reproduction durability is provided. [Solution] In an optical recording medium, a first disc (10) includes at least one information signal layer (L0-Ln). The information signal layer includes a first dielectric layer (14), a recording layer (13), and a second dielectric layer (15), in that order, with the first dielectric layer being located deeper than the recording layer when viewed from a first light irradiation surface (C1). The recording layer includes Mn and O. The first dielectric layer includes Zn, Sn, Al, and O or Zn, Sn, Ti, and O, with the Al content relative to the total amount of Zn, Sn, and Al being 10 atomic % or more, and the Ti content relative to the total amount of Zn, Sn, and Ti being 10 atomic % or more.

A method of manufacturing a magnetic recording medium includes burnishing, with an abrasive material, a surface of a stack including a magnetic recording layer and a protective layer stacked on a substrate in order of the magnetic recording layer and the protective layer. The burnishing of the surface of the stack includes using a long abrasive tape including abrasive grains as the abrasive material fixed onto a support in a state of being wound in roll form, and pressing the abrasive tape, supplied from the state of being wound in the roll form, against the surface of the stack so as to rub the surface of the stack. The abrasive tape in the state of being wound in the roll form is subjected to vacuum treatment in advance such that loose abrasive grains are reduced.

The purpose of the present invention is to provide a method for manufacturing a magnetic recording medium, wherein foreign matter on the surface of the magnetic recording medium can be efficiently removed, and the coating rate by a lubricating layer is high. A method for manufacturing a magnetic recording medium according to the present invention is a method for manufacturing a magnetic recording medium in which a lubricating layer is formed on a laminate in which a magnetic recording layer and a protective layer are laminated in this order on a substrate, the method comprising: a step for applying a first lubricant and a second lubricant on the laminate, and a polishing step for polishing the surface of the laminate to which the first lubricant and the second lubricant have been applied with a polishing material, and a step for removing the second lubricant from the laminate, the polishing step including: a step for pressing and rubbing a tape containing the polishing material against the surface of the laminate; the step of removing the second lubricant includes a step of irradiating the laminate coated with the first lubricant and the second lubricant with light emitted from an LED light source.

There are provided an on-press development type lithographic printing plate precursor including a support, and an image-recording layer on the support, in which the image-recording layer contains two or more electron-donating polymerization initiators and an electron-accepting polymerization initiator, and the two or more electron-donating polymerization initiators are borate compounds, and at least one of the two or more electron-donating polymerization initiators is a borate compound represented by Formula (1), in which, R1, R2, R3, and R4 each independently represent a substituted or unsubstituted alkyl group, a substituted or unsubstituted aryl group, a substituted or unsubstituted alkenyl group, or a substituted or unsubstituted alkynyl group, and R1, R2, R3, and R4 may each independently have a ring structure, provided that at least one of R1, R2, R3, or R4 is different from the other, and M+ represents a cation.

The present invention addresses the problem of providing a method for manufacturing a magnetic recording medium capable of improving the productivity of a magnetic recording medium. A method for manufacturing a magnetic recording medium according to the present invention comprises a polishing step for polishing the surface of a laminate in which a magnetic recording layer and a protective layer are laminated in this order on a substrate with a polishing material, the polishing step includes a step of using a long abrasive tape in a state in which abrasive grains, which are the abrasive material, are adhered to a support body, and pressing and rubbing the abrasive tape, which is supplied from the state in which the abrasive tape is wound in the state in which the abrasive tape is wound in the state in which the abrasive tape is wound in the state in which the abrasive tape is wound in the state in which the abrasive tape is wound in the state in which the abrasive tape is wound, against the surface of the laminate. The grinding belt in which abrasive grains that are dissociated by the vacuum treatment have been reduced in advance is used as the grinding belt that is wound in the roll shape.

According to one embodiment, a magnetic disk device includes recording layers, write heads, read heads, a selector circuit that allows two or more read heads to be selected from among the read heads, a read target selection unit, a read processing unit, and a detection unit. When the read target selection unit selects the first recording layer and the second recording layer the read processing unit controls driving of the selector circuit and causes the selector circuit to select the first read head and the second read head to read data of the first recording layer and data of the second recording layer simultaneously, and the detection unit detects a state of the first recording layer and a state of the second recording layer.

In the present invention, there are provided an on-press development type lithographic printing plate precursor including an image-recording layer on a support, in which the image-recording layer contains a color-forming compound having a group that cleaves by infrared exposure, a polymerization initiator, a polymerizable compound, and a hydrogen-donating compound, and the hydrogen-donating compound is a compound different from the polymerization initiator, the polymerizable compound, the color-forming compound, and an acid-cleavable compound and is a compound having at least one group selected from the group consisting of —OH, —NH—, —SO2—NH—, —SO2—OH, —CO—NH—, and —CO—OH in a molecule and having a molecular weight of less than 3,000, and a method of preparing a printing plate.

The present invention addresses the problem of providing a positive lithographic printing plate precursor and a method for producing a lithographic printing plate, said positive lithographic printing plate precursor having good development discrimination and having good brush resistance and image portion scratch resistance. The present invention provides a positive lithographic printing plate precursor and a method for making a lithographic printing plate using the positive lithographic printing plate precursor. The positive lithographic printing plate precursor comprises: a support; and an image recording layer formed from a positive photosensitive resin composition on the support. The positive photosensitive resin composition contains: a compound having at least one electron withdrawing group and at least one phenolic hydroxyl group in one molecule; an alkali soluble resin; and an infrared absorbent, wherein the electron withdrawing group does not include a sulfonyl group.

Disclosed is a heat-sensitive recording body which has, in order on a support, a primer layer containing hollow particles, a binder, and inorganic pigment I, and a heat-sensitive recording layer containing a leuco dye, a color developer, and inorganic pigment II, and which is characterized by containing, as the color developer, an N,N'-diaryl urea-based compound represented by the following formula (1) (in the formula, R2 represents an alkyl group having 1 to 12 carbon atoms, an aralkyl group having 7 to 12 carbon atoms, or an aryl group having 6 to 12 carbon atoms, and the aralkyl group and the aryl group are each optionally substituted with an alkyl group having 1 to 12 carbon atoms, an alkoxy group having 1 to 12 carbon atoms, an aryl group having 6 to 12 carbon atoms, or a halogen atom, and each R2 can be the same as or different from the others, A1 represents a hydrogen atom or an alkyl group having 1 to 4 carbon atoms, and each A1 can be the same as or different from the others), and, as the inorganic pigment II, a pigment having an oil absorption of 130 ml / 100 g or less,

Provided is a magnetic recording medium that is capable of increasing the reproduction output.A magnetic recording medium is a tape-shaped magnetic recording medium and includes a recording layer. A nucleation magnetic field Hn of the magnetic recording medium satisfies a relationship of Hn≥0 [Oe], and the magnetic recording medium satisfies a relationship of the following formula (1).(Mrt)0.5×f⁡(Hs)≥0.7(1)(wherein, in the formula (1), Mrt represents a product of a residual magnetization amount Mr of the magnetic recording medium and a thickness t of the recording layer. Hs represents a saturation magnetic field of the magnetic recording medium. In a case where Hs≤8500 [Oe], f(Hs)=1.00, and in a case where Hs>8500 [Oe], f(Hs)=1 / (1+(Hs−8500) / 8500).).

A thermosensitive recording medium is provided that includes: a support; a thermosensitive recording layer arranged in a partial region of a top surface of the support; a color ink layer arranged in a partial region of the top surface of the support; a first protective part arranged in at least a partial region of at least a top surface of the color ink layer; and a second protective part arranged on at least a top surface of the thermosensitive recording layer.

Provided is a heat-sensitive recording body having excellent cuttability of a heat seal layer. This heat-sensitive recording body has a heat seal layer including a water-dispersible resin binder on one side of a paper substrate, and a heat-sensitive recording layer including a colorless or light-colored electron-donating leuco dye and an electron-accepting developer on the other side of the substrate, and has an air resistance of 100,000 seconds or less.

The invention provides a magnetic recording medium production apparatus, a magnetic recording medium production method, and a finishing device, which can detect or predict the generation of defective products at an early stage during the production of a magnetic recording medium so as to improve the productivity of the magnetic recording medium. The apparatus for producing a magnetic recording medium includes: a film forming device that sequentially forms at least a magnetic recording layer and a protective layer on a substrate; a lubricant coating device for coating a lubricant on the protective layer formed by the film forming device to form a lubricating layer; and a finishing device for finishing the surface of the lubricating layer coated by the lubricant coating device by using an abrasive material, the magnetic recording medium production apparatus comprising: a collection unit for collecting data of a load amount during finishing; a storage unit that stores data of the collected load amount; a calculation unit that performs calculation using the stored load amount data; and a setting unit that sets manufacturing conditions for the film forming device or the lubricant coating device on the basis of the calculation results of the calculation unit.

The preparation method comprises the following steps: weighing raw materials for preparing the sputtering target material according to a preset stoichiometric ratio, mixing zinc oxide powder and manganese oxide powder in ethanol, carrying out wet grinding for 2-4 hours, adding Cu powder, W powder and Ta powder, continuously carrying out wet grinding for 1-20 hours, drying, and screening to obtain mixed nano powder; filling the mixed nano powder into a graphite mold, putting the graphite mold into a hot pressing furnace, carrying out hot pressing sintering in a vacuum environment at 900-1100 DEG C, cooling, demolding, taking the material, and machining to obtain a sputtering target material in a target shape; the special requirement of the blue light storage recording layer is focused, the optical performance is optimized through a ZnO doping system, the raw materials adopt a segmented grinding process, and the problems that raw material powder is agglomerated and metal powder is prone to sinking in the mixing process are solved; the obtained target material has the advantages of excellent resistivity (less than 50 * 10 <-4 > omega.cm) and high density (gt, 95%), the coating film transmittance of the prepared target material is more than 85%, and the requirement for a high-performance blue light storage recording layer is met.

The application discloses a nerve microelectrode with long-term biocompatibility maintenance and a preparation method thereof. Most of the existing nerve electrodes have only a few recording points, so that the spatial resolution is low; the flexible electrode implantation has a large width, so that more trauma areas are caused. The nerve microelectrode with long-term biocompatibility maintenance for nerve recording comprises a recording layer, an electrochemical modification layer and a biocompatibility coating. The preparation of the biocompatibility polypeptide coating is realized by adopting a MEMS compatible PVD technology, so that the preparation efficiency and consistency of the electrode are greatly improved. The biocompatibility coating which completely covers the electrode points and the whole probe surface has a special porous nanofiber structure and can realize ion conduction. The electrode point recording performance is improved by using the electrochemical modification layer, so that the biocompatibility is improved without seriously affecting the electrode impedance and recording capacity.

The invention belongs to the technical field of optical discs, and particularly discloses a writing device and equipment for a single-wavelength single-servo-layer multi-recording-layer optical disc. Comprises: a first light source for generating a recording beam; the second light source is used for generating a servo light beam; the first beam splitting module is arranged at the position where the propagation directions of the recording light beam and the servo light beam intersect, and is used for transmitting the recording light beam and reflecting the servo light beam and the reflected light of the servo layer; the photoelectric detector is used for detecting a reflected light signal of the servo layer and controlling the torquer to drive the second lens to move according to the change of the reflected light signal, so that the recording light beam and the servo light beam are always focused on the data layer and the servo layer respectively; the wavelength of the recording light beam emitted by the first light source is the same as that of the servo light beam emitted by the second light source. According to the invention, data servo / write-in is realized by using the single wavelength, only the single wavelength needs to be subjected to design optimization, and the optical head has significant advantages in reducing the size of the optical head and improving the performance.

The present invention relates to an on-press developing lithographic printing plate precursor, a method for producing a lithographic printing plate using the on-press developing lithographic printing plate precursor, and a lithographic printing method, the on-press developing lithographic printing plate precursor having a support and an image recording layer on the support, the image recording layer contains a polymerizable compound and polymer particles, the median diameter of the polymer particles is 50-120 nm, the content of the polymer particles is 42-90 mass% relative to the total mass of the image recording layer, and after osmium dyeing treatment is performed on the thickness-direction cross section of the lithographic printing plate precursor, the thickness-direction cross section of the lithographic printing plate precursor is greater than the thickness-direction cross section of the lithographic printing plate precursor, and the thickness-direction cross section of the lithographic printing plate precursor is greater than the thickness-direction cross section of the lithographic printing plate precursor. In a cross-sectional image obtained by binarizing a cross-sectional image obtained by scanning electron microscope observation into a dyed section and a non-dyed section, the standard deviation of the area ratio of the non-dyed section is less than 6.

The present invention provides an on-press development type lithographic printing plate precursor and a method for manufacturing a printing plate, the on-press development type lithographic printing plate precursor having an image recording layer on a support, the image recording layer contains a chromophoric compound having a group that cleaves by infrared exposure, a polymerization initiator, a polymerizable compound, and a hydrogen-donating compound, and the hydrogen-donating compound is a compound different from the polymerization initiator, the polymerizable compound, the chromophoric compound, and the acid-cleaving compound. And a compound having a molecular weight of less than 3,000 and having at least one group selected from the group consisting of-OH,-NH-,-SO2-NH-,-SO2-OH,-CO-NH-, and-CO-OH in the molecule.

The present application aims to provide a heat-sensitive recording body having good transparency while suppressing curling. A heat-sensitive recording body (1) has a base material (2) containing a transparent resin film, a heat-sensitive recording layer (3), and a protective layer (4) formed in this order on one surface of the base material (2), and a back-coating layer (5) containing a core-shell type resin and a polyamide epichlorohydrin resin formed on the other surface of the base material (2). The protective layer (4) preferably contains a top-coating layer (6) and an intermediate layer (7) formed between the top-coating layer (6) and the heat-sensitive recording layer (3).

The present invention aims to provide a thermal recording material with satisfactory transparency and the curling suppressed. The thermal recording material is a thermal recording material 1, wherein a substrate 2, a thermal recording layer 3 and a protective layer 4 are stacked on one surface of the substrate 2 in this order, and a back coat layer 5 is formed on the other surface of the substrate 2. The substrate 2 consists of a transparent resin film, and the back coat layer 5 comprises a core-shell type resin and polyamide-epichlorohydrin resin. It is preferable that the protective layer 4 include a top coat layer 6 and an intermediate layer 7 between the top coat layer 6 and the thermal recording layer 3.

Various apparatuses, devices, methods, and media are disclosed for heat-assisted magnetic recording (HAMR) that, in some examples, provide a HAMR medium with a platinum-doped CO—BN capping layer. In one example, the HAMR medium includes a CoPtBN capping layer on a magnetic recording layer with Pt in the range of 5-12 atomic percentage (at. %). An atomic ratio of Co to Pt within the CoPtBN may be, e.g., in the range of 5 to 13. The BN in the CoPtBN may be, e.g., 22-30 mole percentage of the CoPtBN. The CoPtBN may have a face-centered cubic (FCC) crystalline structure. The HAMR medium may have various other layers, such as a substrate, a heatsink layer on the substrate, and a seed layer on the heatsink layer, with the magnetic recording layer on the seed layer. The seed layer may include MgO or MgO—TiO. An amorphous soft underlayer (SUL) may be provided.

Disclosed is a heat-sensitive recording body which comprises, on a supporting body, at least a heat-sensitive recording layer that contains a leuco dye, a developer, and an adhesive. The heat-sensitive recording body is characterized in that the heat-sensitive recording layer contains, as a main first developer, an N, N'-diarylurea-based compound represented by general formula (1) (wherein R2 represents an alkyl group having 1 to 12 carbon atoms, an aralkyl group having 7 to 12 carbon atoms, or an aryl group having 6 to 12 carbon atoms, the aralkyl group and the aryl group may be substituted by an alkyl group having 1 to 12 carbon atoms, an alkoxy group having 1 to 12 carbon atoms, an aryl group having 6 to 12 carbon atoms, or a halogen atom, and the plurality of R2 moieties may be the same or different, A1 represents a hydrogen atom or an alkyl group having 1 to 4 carbon atoms, and the plurality of A1 moieties may be the same or different), and contains, as a second developer, at least one compound that is selected from the group consisting of a urea urethane compound represented by general formula (2) and 5-(N-3-methylphenyl-sulfonamide)-N',N"-bis-(3-methylphenyl)-isophthalic acid diamide.

A production method of a magnetic recording medium including a nonmagnetic substrate, a base layer over the nonmagnetic substrate, a seed layer over the base layer, and a magnetic recording layer over the seed layer. The production method of the magnetic recording medium includes forming the seed layer through a process including: forming a film including two elements, represented by element α and element β, such that the element α is mainly a columnar crystal having an fcc structure and the element β is mainly an amorphous structure; and etching a surface of the film to form a surface in which the element α and the element β are phase-separated from each other.

The present application provides a support for a lithographic printing plate, a lithographic printing plate precursor, and a method for producing a lithographic printing plate precursor, the support for a lithographic printing plate being capable of obtaining a lithographic printing plate precursor excellent in scratch resistance by being combined with an image recording layer. The support for a lithographic printing plate of the present application is a support for a lithographic printing plate including an aluminum plate and an anodized film of aluminum provided on the aluminum plate, a plurality of convex portions being present on the surface on the side of the anodized film of the support for a lithographic printing plate, the average value of the equivalent circle diameters of the cut surfaces of the convex portions in the positions higher than the position of the average height of the convex portions by 0.5 μm or more being 3.0 to 10.0 μm, and the density of the convex portions having a height higher than the position of the average height of the convex portions by 0.5 μm or more being 3000 to 9000 pieces / mm 2 .