Abstract: A bisstyryl compound. The bisstyryl compound has formula (I): wherein Z1 and Z2 are benzene, naphthalene, or heterocyclic ring, R1 is H, C1-5 alkyl, hydroxyl, halogen atoms, or alkoxy, R2 is H, halogen atoms, C1-5 alkyl, nitro, ester, carboxyl, sulfo, sulfonamide, sulfuric ester, amide, C1-3 alkoxy, amino, alkylamino, cyano, C1-6 alkylsulfonyl, or C2-7 alkoxy carbonyl, R3, R4, R5, and R6 are H, halogen atoms, alkyl, aralkyl, or heterocyclic ring containing O, S, or N, or R3 and R4 are joined to a nitrogen atom or R5 and R6 are joined together to form a ring, R7 and R8 are H or alkyl, W is nitrogen with or without Z1 and Z2 or aromatic group without Z1 and Z2, Y is carbon, oxygen, sulfur, selenium, —NR, or —C(CH3)2, m is 1-3, n is 1-18, and X1 and X2 are anionic groups or anionic organometallic complexes.

Abstract: Image formation via photoinduced fluorescence changes in a polymeric medium with two-photon fluorescence readout of a multi-layer structure. Fluorophore-containing polymers, possessing one or more basic functional groups, underwent protonation in the presence of a photoinduced acid generator upon exposure to a broad-band UV light source or fast-pulsed red to near-IR laser irradiation. Solution studies demonstrated formation of monoprotonated and diprotonated species upon irradiation, each resulting in distinctly different absorption and fluorescence properties. The fluorescence of the original, neutral, fluorophore was reduced upon monoprotonation, leading to a concomitant increase in fluorescence at longer wavelengths due to the monoprotonated form, the basis for multichannel data readout.

Abstract: A bis(indolestyryl) compound. The bis(indolestyryl) compound has formula (I): wherein A and B comprise benzene, naphthalene, or heterocyclic ring containing O, S, or N, R1 and R1? are H, halogen, C1-5 alkyl, nitro, ester, carboxyl, sulfo, sulfonamide, amide, sulfo ester, C1-3 alkoxy, amino, alkylamino, cyano, C1-6 alkylsulfonyl, or C2-7 alkoxy carbonyl, R2, R2?, R3, and R3? comprise H, C1-6 alkyl, C6-18 aryl, C2-6 alkenyl, C3-6 cycloalkenyl, or C3-6 cycloalkyl, R4 is H, C1-5 alkyl, hydroxyl, halogen, or alkoxy, R5 and R5? comprise H, halogen, C1-5 alkyl, nitro, C1-3 alkoxy, amino, cyano, C1-6 alkylsulfonyl, or C2-7 alkoxy carbonyl, W comprises oxygen, sulfur, selenium, —NR, or —C(CH3)2, n is 1˜18 and Z1 and Z2 are different and comprise an anion or an anionic organometallic complex with +1 or +2 valence, wherein R bonded to nitrogen is C1-4 alkyl.

Abstract: An image forming medium includes a substrate and an imaging layer coated on or impregnated into the substrate, where the imaging layer includes a photoacid generator and an acid-base indicator. In the image forming medium, irradiation of the imaging layer causes the photoacid generator to generate an acid that reacts with the acid-base indicator to produce an image.

Abstract: A photocurable and thermosetting resin composition comprising (A) a carboxylic acid-containing photosensitive resin having at least one carboxyl group and at least two ethylenically unsaturated bonds in its molecule, (B) a filler, (C) a photopolymerization initiator, (D) a diluent, and (E) a compound having at least two cyclic ether groups and/or cyclic thioether groups in its molecule, wherein the difference between the refractive index of the carboxylic acid-containing photosensitive resin (A) and that of the filler (B) is 0.20 or less, and the average grain diameter of the filler (B) is 0.5 to 0.05 ?m, and wherein the photo-curing and thermosetting resin composition can be developed by a diluted alkali solution, and can be pattern-formed by a laser oscillation light source of 350 to 420 nm in wavelength.

Abstract: (1) A two-photon absorbing polymerization method comprising a first step of irradiating light absorbable by two-photon absorption to form a latent image and a second step of exciting the latent image to cause polymerization, and (2) A two-photon absorbing optical recording method comprising a first step of forming a latent image of a color-forming material by two-photon absorption, a second step of irradiating light on the latent image of a color-forming material to cause polymerization based on the linear absorption of the color-forming material, and thereby forming difference in the refractive index to perform a recording, are provided.

Abstract: Single- and multi-layer positive-working imageable elements include an ink receptive outer layer includes a primary polymeric binder that is a poly(vinyl phenol) or a phenolic polymer having certain acidic groups. The use of this type of polymeric binder makes the imaged elements developable in low pH (11 or less) alkaline developers.

Abstract: Compositions and systems for production of color images with a fluoran leuco dye having a latent developer are disclosed and described. A color forming composition or composite can include a polymer matrix, a thermally modifiable fluoran leuco dye having a latent developer attached thereto, and a radiation absorber. The thermally modifiable fluoran leuco dye can be developable upon the color forming composition being contacted with electromagnetic radiation which causes the radiation absorber to become energized, so that the energized radiation absorber causes the latent developer to undergo rearrangement to produce an intermediate dye form having a phenolic substituent. The intermediate dye can then undergo an acid catalyzed ring opening to produce a colored dye form.

Abstract: A two-photon absorption decolorizable material comprising: a two-photon absorption dye executing a two-photon absorption; and a decolorizable dye having a molar absorption coefficient equal to or less than 100 at a wavelength of a light irradiated at the two-photon absorption, wherein the decolorizable dye is decolorized by an electron transfer or an energy transfer utilizing an excitation energy obtained by the two-photon absorption of the two-photon absorption dye.

Abstract: An object of the present invention is to provide an image recording material exhibiting an excellent exposure visualization property as well as an image formation process employing the image recording material, and further to provide not only a printing plate material exhibiting excellent on-press developability and printing durability, but also an image formation process employing the printing plate material, accompanied with an excellent exposure visualization property. Also disclosed is an image recording material possessing a support and provided thereon, a thermosensitive image formation layer, wherein the thermosensitive image formation layer contains thermoplastic spherical particles having an average particle diameter of 100-500 nm, and exhibits a structural color originated with the thermoplastic spherical particles.

Abstract: An image forming medium includes a substrate and an imaging layer coated on or impregnated into the substrate, where the imaging layer includes a photobase generator and coupling agent. In the image forming medium, irradiation of the imaging layer causes the photobase generator to generate base that reacts with the coupling agent to produce an image.

Abstract: Various embodiments of a method, coating and system for conductive patterning are disclosed.

Abstract: A recording layer including a novel dye for a high density optical recording medium, employing short wavelength laser source with a wavelength no longer than 530 nm 530 nm for recording high density information and reproduction/playback of the high density information recordings, is provided.

Abstract: Optical information-recording media comprise a first transparent substrate through which a laser beam enters, a first information-recording layer deposited on the first transparent substrate, a first reflection film formed on the first information-recording layer, an intermediate layer deposited on the first reflection film, a second information-recording layer formed on the intermediate layer, a second reflection film deposited on the second information-recording layer, and a second substrate provided on the second reflection film. The recording film of each of the first and second information-recording layers has a main composition represented by (GeTe)xSb2?yInyTe3, and its composition ratio is within ranges of 0.04?y<2 and 4?x?8.

Abstract: An optical information recording medium of the present invention includes a thin film section made up of one or more thin film, the thin film section being provided on a substrate. Thin films of the thin film section include a single optical multiple interference film which incites optical multiple interference in a thin film section, the optical multiple interference being incited by the change of complex refractive index in accordance with the intensity of incident light. Also, the composition and thickness of the optical multiple interference film are arranged in such a manner as to cause the wavelength distribution of the reflectance of the thin film section at room temperatures to have a minimum value within wavelengths of ±80 nm of the incident light for reproduction. With this, the design freedom of the optical multiple interference film which realizes super-resolution reproduction with a reduced effective reproduction spot is significantly increased.

Abstract: An image forming medium includes a substrate and an imaging layer coated on or impregnated into the substrate, where the imaging layer includes a photobase generator and an acid-base indicator. In the image forming medium, irradiation of the imaging layer causes the photobase generator to generate a base that reacts with the acid-base indicator to produce an image.

Abstract: A cyanine compound represented by formula (I): wherein ring A and ring B each represent a substituted or unsubstituted benzene ring or a substituted or unsubstituted naphthalene ring; R1, R2, R3, and R4 each represent an alkyl group having 1 to 4 carbon atoms or a substituted or unsubstituted benzyl group, or R1 and R2 are taken together, or R3 and R4 are taken together, to form a 3- to 6-membered ring, provided that at least one of R1, R2, R3, and R4 is a substituted benzyl group; Y1 and Y2 each represent an organic group having 1 to 30 carbon atoms; Anm? represents an m-valent anion; m represents an integer 1 or 2; and p represents a coefficient for maintaining overall charge neutrality.

Abstract: To provide a fluoropolymer having functional groups and having high transparency in a wide wavelength region, and a resist composition comprising the fluoropolymer. A fluoropolymer (A) having monomer units formed by polymerization of a fluorinated diene represented by the following formula (1): CF2?CFCH2CH-Q-CH2CH?CH2??(1) wherein Q is (CH2)aC(CF3)2OR4 (wherein a is an integer of from 0 to 3, R4 is an alkyl group or a fluorinated alkyl group having at most 20 carbon atoms which may have an etheric oxygen atom, an alkoxycarbonyl group having at most 6 carbon atoms, or CH2R5 (wherein R5 is an alkoxycarbonyl group having at most 6 carbon atoms)), or (CH2)dCOOR6 (wherein d is 0 or 1, and R6 is a hydrogen atom, or an alkyl group or a fluorinated alkyl group having at most 20 carbon atoms), a process for its production and a resist composition having the fluoropolymer (A) as a base.

Abstract: A near infrared ray activation type positive resist composition comprising (A) a vinyl-based polymer having a monomer unit having an alkali-soluble group blocked by an ether having an alkenyl group next to an ether oxygen, (B) a photothermal converting substance generating heat by a light in the near infrared region, (C) a thermal acid generator generating an acid by heat, can provide a near infrared ray activation type positive resist composition which can be subjected to an exposure treatment in a complete bright room such as under a white light and the like, gives desired sensitivity and resolution, and of which baking treatment conditions can be relaxed or a baking treatment can be omitted, and a pattern formation method using the same.

Abstract: A method for laser marking a substrate which method comprises exposing a composition comprising a tetrabenzodiazadiketoperylene pigment to laser radiation to produce a fluorescent marking readily apparent under UV light is disclosed. Many of the tetrabenzodiazadiketoperylenes herein are novel. This method can yield fluorescent markings which are not readily apparent under ambient light. A method for producing non-fluorescent laser marked substrates containing tetrabenzodiazadiketoperylene dyes is also disclosed.

Abstract: There is disclosed a manufacturing method of a tuning-fork type quartz crystal resonator, in which a simple step can just be added to the existing manufacturing process to prevent generation of short-circuit at a crotch portion and largely improve yield. On a quartz crystal wafer, a metal film is formed on a quartz crystal substrate processed into a tuning-fork form by evaporation or sputtering, the metal film is patterned into desired electrode and wiring line shapes by photolithography/etching, and then a crotch portion 30 is irradiated with laser from a direction substantially vertical to a wafer surface to remove a non-etched metal film portion in the manufacturing method of the tuning-fork type quartz crystal resonator.

Abstract: An optical information recording medium containing a substrate having provided thereon a recording layer capable of recording information by laser beam irradiation, wherein the recording layer contains a dye represented by the following general formula (I): wherein R1, R2, R3 and R4 each independently represents a hydrogen atom or a substituent group; R5 and R6 each independently represents a hydrogen atom or a substituent group; and B represents a substituted or unsubstituted aryl group or a substituted or unsubstituted heterocyclic group, which are derivable from a diazonium salt.

Abstract: A method of fabricating an OLED is provided. The method includes providing a substrate, in which a pixel electrode is formed. In addition, the method includes laminating a donor substrate attached to a frame on an entire surface of the substrate, and irradiating a laser to a predetermined region of the donor substrate to form an organic layer pattern on the pixel electrode. The present invention provides a method of fabricating the OLED capable of suppressing generation of contaminants such as particles and so on, and preventing the donor substrate from sagging or bending, as well as improving transfer efficiency since the donor substrate and the substrate are readily adhered to each other to maintain vacuum state.

Abstract: A method for evaluating a pattern formation process includes applying a photoresist on a substrate, transferring a first pattern and a second pattern adjacent to or at least partly overlapped with each other to the photoresist, wherein the first pattern includes a plurality of lines consisting of transparent regions, having the same length and a line-width less than or on the order of wavelengths of visible light, periodically located parallel to one another with end portions aligned on both sides thereof, and the second pattern comprises a transparent region having a larger area compared with each of the lines, and determining, in a first pattern formed on the substrate with the first pattern transferred to the photoresist, by an optical means, an amount of shorting of the lines in a direction parallel to the line.

Abstract: Disclosed is an optical disk, card or media which comprises: a) a plurality of data structures that are readable by the interrogating beam of light; and b)a composition on or in the optical disk, card or media disposed so that when the optical disk, card or media is used in the optical read-out system, the interrogating beam of light passes through the composition before or after contacting some or all of the data structures. The composition comprises a polymeric matrix with an organometallic complex dissolved therein or with metal, transition metal, metal oxide or transition metal oxide nanoparticles uniformly dispersed therein. The composition is substantially transparent to the interrogating beam and/or is substantially colorless.

Abstract: An image-recording materials containing (A) a compound having a specific partial structure and at least one group selected from an acid group having a pKa of 11 or less, the derivative of the acid group and a group capable of generating the acid group, a lithographic printing plate precursor having an image-recording layer containing the compound (A), and a lithographic printing method using the lithographic printing plate precursor, are provided.

Abstract: An information recording medium has an excellent jitter characteristic with a considerable difference in reflectance between prior to and subsequent to recording. The information recording medium includes a recording layer which contains a material having a reflectance which varies by irradiation of a light beam, on which information is recorded as reflectance variations, and a substrate for supporting the recording layer, the recording layer including a metal nitride as a major component.

Abstract: Semiconductor nano-particles, due to their specific physical properties, can be used as reversible photo-bleachable materials for a wide spectrum, from far infrared to deep UV. Applications include, reversible contrast enhancement layer (R-CEL) in optical lithography, lithography mask inspection and writing and optical storage technologies.

Abstract: The azo-metal chelate dye of the present invention is formed, for example, from zinc (divalent) as a center metal ion and an azo compound bonded with a coupler component having an amino group and a fluorine-substituted alkylsulfonylamino group subjected to condensed ring-formation to have a 1,3,4-thiazole ring as a diazo component.

Abstract: An optical information recording medium is provided. This medium at least stores information that indicates a maximum recording linear velocity Vh. The medium comprises a substrate having a concentric circular guide groove. This guide grove has land portions and groves portions. At least a phase change type recording layer is formed on the substrate. The recording layer has such a composition and thickness that a dislocation linear velocity V satisfies the relation V?Vh×0.85.

Abstract: Aspects of the invention can provide a patterning forming method capable of patterning a thin film by a simple and inexpensive device. The thin film can be provided on a base member including a photothermal conversion material that converts optical energy into thermal energy and light is radiated onto the base member to remove the thin film corresponding to a light-radiated region, such that the thin film is patterned.

Abstract: There are disclosed imaging members wherein a chemical compound in a crystalline form is converted, at least partially, and preferably substantially completely or completely, to a liquid in the amorphous form, the liquid having intrinsically a different color from the crystalline form. Also described are imaging methods utilizing the imaging members. The conversion of the compound from the crystalline form to the liquid form can be effected by the application of thermal energy or by other imaging techniques.

Abstract: The present invention relates to a method for fluorescent image formation which can form a highly scratch-resistant fluorescent full-color image using a colorless fluorescent agent and can freely regulate the tone of color mixture of a combination of two or more fluorescent colors in order to impart, to articles, a higher level of forgery preventive function than a prior art technique and a print having a high level of forgery preventive function. The invention characterized in that fluorescent inks are provided that are substantially colorless upon visible light irradiation and contain organic fluorescent agents which, upon ultraviolet light irradiation, emit fluorescences in a visible region, and that two or more fluorescent inks, which emit fluorescences having mutually different color tones, are deposited on a printing face in its image formation region according to information on an image to be printed in a dot matrix manner so that dots of one color do not overlap with dots of another color.

Abstract: Methods are provided for enhancing resolution of a chemically amplified photoresist. A film comprising a photoacid generator and a polymer comprising functional groups bonded to protecting moieties is deposited on a substrate. The film is exposed to patterned radiation. The patterned radiation results in protonation of a portion of the functional groups and the formation of a latent image within the film. The bonds between the protonated functional groups and the protecting moieties are selectively excited with non-thermal energy having a wavelength spectrum that resonantly cleaves the bonds.

Abstract: An optical information recording medium containing a substrate having provided thereon a recording layer capable of recording information by laser beam irradiation, wherein the recording layer contains a dye represented by the following general formula (I): wherein R1, R2, R3 and R4 each independently represents a hydrogen atom or a substituent group; R5 and R6 each independently represents a hydrogen atom or a substituent group; and B represents a substituted or unsubstituted aryl group or a substituted or unsubstituted heterocyclic group, which are derivable from a diazonium salt.

Abstract: An object of the present invention is to provide a method for manufacturing structure in which a medium for forming structure contains a stacked composition of a light absorption layer and a thermal reaction layer, and microscopic structures are formed uniformly by separating the light absorption layer which generates heat by light absorption and the thermal reaction layer which reacts with heat to form structures. Therefore, provided is a method for manufacturing structure containing light irradiation to a medium for forming structure having a stacked composition containing a light absorption layer which contains a light absorption material, and a thermal reaction layer which contains a thermal reaction material, and etching the medium for forming structure which is irradiated with light.

Abstract: A fluoropolymer having functional groups and having high transparency in a wide wavelength range is provided, and a resist composition and a composition for a resist protective film, comprising the fluoropolymer, wherein the fluoropolymer has monomer units formed by cyclopolymerization of a fluorinated diene represented by the formula (1): CF2?CFCF2C(CF3)(OR1)—(CH2)nCR2?CHR3??(1) wherein R1 is a hydrogen atom, an alkyl group having at most 20 carbon atoms, or (CH2)aCOOR4 (wherein a is 0 or 1, and R4 is a hydrogen atom or an alkyl group having at most 20 carbon atoms), each of R2 and R3, which are independent of each other, is a hydrogen atom or an alkyl group having at most 12 carbon atoms, and n is 0 or 2, provided that when n is 0, at least one of R1, R2 and R3 is other than a hydrogen atom.

Abstract: The present invention provides a method for manufacturing a color filter to facilitate the correction of the defect which is caused by the undesirable mixing of plural color filter materials with different color. Further, the present invention provides a color filter manufactured by the present method for manufacturing the color filter and also a semiconductor device using the color filter manufactured by the present method. In the manufacturing method of the present invention, the color-mixed portion which is undesirably formed during the production of the color-filter by using a plurality of color filter materials is irradiated with a laser beam which is different in transmissivity to each color filter material. This method allows the color filter material which is necessary to remain and the color filter material which is unnecessary to be selectively removed.

Abstract: Disclosed are a siloxane compound, a photoresist composition using the same, and a method of forming a pattern, wherein the siloxane compound is having a general formula: wherein R1 is a tertiary butyl group or a 1-(tert-butoxy)ethyl group, and R2 and R3 is each independently a lower alkyl group having 1 to 4 carbon atoms.

Abstract: A method of transferring organic material from a donor element onto a substrate of an OLED device, includes providing a linear laser light beam which is moved relative to the donor element and substrate and which has a predetermined number of laser modulatable channels, each of which when activated causes laser light to illuminate the donor element which heats to a sufficient level to vaporize organic material and transfer such material onto a substrate; and selecting the pattern of activated laser modulatable channels such that only a portion of the OLED device receives organic material during a single relative motion pass of the linear laser light beam to the donor element and substrate.

Abstract: An apparatus for direct engraving comprises: a plurality of laser diode emitting at different wavelengths; a multiplexer (11) for collecting the plurality of laser sources into a single laser beam; a rare earth doped fiber amplifier (12) to amplify the single laser beam to form an amplified single laser beam; a demultiplexer to split the single laser beam into a plurality of amplified laser sources; and an imaging means to apply the plurality of amplified laser sources for imaging a printing plate (55).

Abstract: A phase change optical recording medium includes at least a supporting substrate and a recording layer essentially consisting of AgInSbTe alloy compositions implementing recording and readout steps utilizing changes in reflectivity. The recording medium is characterized by the relation v0?0.7 vWH, where the critical relative velocity of phase change, v0, defined by the value of v, at which the differential coefficient, ?dR(v)/dv, reaches a maximum, when the recording medium moves against an optical unit during the recording steps at a relative velocity, v, ranging from minimum and maximum relative velocities warranted for the recording medium, vWL and vWH, respectively. When the reflectivity is measured with varying erase power PE at the linear relative scanning velocity v0, the reflectivity of the recording layer as a function of erase power, R(PE), preferably has a minimum. The recording layer has an activation energy of deterioration equal to or greater than 1.

Abstract: An optical recording medium includes a substrate, a first recording layer formed on the substrate and containing an element selected from the group consisting of Si, Ge, C, Sn, Zn and Cu as a primary component, and a second recording layer located in the vicinity of the first recording layer and containing Al as a primary component, the optical recording medium being constituted to be irradiated by a laser beam projected onto the side opposite from the substrate and the total thickness of the first recording layer and the second recording layer being equal to or thinner than 40 nm. According to the thus constituted optical recording medium, it is possible to decrease a noise level and improve a C/N ratio in a reproduced signal.

Abstract: The invention relates to an illuminating station for the production of partially designed areas in one or more layers of a web of sheeting and to optically variable elements produced with such an illuminating station and possessing partially designed areas showing different optical properties. The illuminating station has one or more radiation sources for illuminating the sheeting. The illuminating station has, further, a masking tape having partially designed areas showing different optical properties, which masking tape is guided through an illuminating zone in the path of radiation between said one or more radiation sources and the web of sheeting. The illuminating station further has two or more guide means for guiding the masking tape and/or for guiding the web of sheeting, which guide means are arranged such that the masking tape is guided in the illuminating zone in parallel relationship relative to the sheeting.

Abstract: A method of making a lithographic printing plate includes the steps of: providing a lithographic printing plate precursor including (i) a support having a hydrophilic surface or which is provided with a hydrophilic layer and (ii) a coating provided thereon which includes hydrophobic thermoplastic polymer particles; exposing the coating to heat, thereby inducing coalescence of the thermoplastic polymer particles at exposed areas of the coating; and developing the precursor by applying a gum solution to the coating, thereby removing non-exposed areas of the coating from the support. According to the above method, the plate precursor can be developed and gummed in a single step.

Abstract: A material film for a mask film comprising a substrate film transmitting ultraviolet light and a resin layer not transmitting ultraviolet light disposed on one face of the substrate film, the resin layer having a color which can be eliminated by irradiation with laser beams, a transmittance of ultraviolet light of 0.1% or smaller, a thickness of 0.1-30 ?m and an average surface roughness on a central line Ra of 0.1-3 ?m and comprising carbon black having an average particle diameter of 20-50 nm and a specific surface area of 70-150 m2/g. The resin layer exhibits uniform transparency at portions the color of which is eliminated and suppresses formation of scratches. The mask film is easily positioned in preparation of great printing plates and good contact is easily attained throughout the entire surface suppressing containment of air between the mask film and the printing plate material.

Abstract: Methods of making micro-fluid ejection head structures. One of the methods includes providing a substrate having a plurality fluid ejection actuators on a device surface thereof. The device surface of the substrate also has a thick film layer comprising at least one of fluid flow channels and fluid ejection chambers therein. A removable anti-reflective material is applied to at least one or more exposed portions of the device surface of the substrate. A nozzle layer is applied adjacent to the thick film layer. The nozzle layer is imaged to provide a plurality of nozzles in the nozzle layer, and the non-reflective material is removed from the exposed portions of the device surface of the substrate.

Abstract: An exposure system includes an exposure section provided within a chamber for irradiating a resist film formed on a wafer with exposing light through a mask with an immersion liquid provided on the resist film. It further includes a drying section for drying the surface of the resist film after the irradiation.

Abstract: An object of the present invention is to provide a planographic printing plate material as well as a printing method in which excellent properties of on-press development, exposure image visualization, scratch resistance, background contamination resistance, and printing durability are exhibited. Disclosed is a planographic printing plate material possessing a hydrophilic layer and an image formation layer provided on a plastic support, wherein the image formation layer contains polyolefin wax having a melting point of 105-120° C. and a melt viscosity of 1-1200 mPa·s, the hydrophilic layer contains spherical silica particles having a particle diameter of 5.0-7.0 ?m, and a content ratio of the spherical silica particles having a particle diameter of 5.0-7.0 ?m is not less than 60% by volume, based on a total volume of particles having a particle diameter of 2-10 ?m contained in the hydrophilic layer.

Abstract: A presensitized lithographic plate comprises a support and a hydrophilic image-recording layer. The hydrophilic image-recording layer contains a hydrophilic polymer and an agent capable of converting hydrophilic to hydrophobic when the agent is heated. The hydrophilic polymer comprises a main chain and branched chains. Each of the branched chain comprises a hydrophilic chain having a molecular weight in the range of 200 to 1,000,000. A hydrophilic substrate and a lithographic printing process are also disclosed.