摘要:
Disclosed is a light sensitive composition containing a compound A having a group capable of undergoing radical polymerization, a compound B having a group capable of undergoing cationic polymerization, a photopolymerization initiator C, and a polymer binder D, the light sensitive composition being characterized in that the photopolymerization initiator C comprises an iron-arene complex and a halogenated alkyl group-containing compound.
摘要:
Disclosed is a process of preparing a planographic printing plate from a light sensitive planographic printing plate material comprising a hydrophilic support and provided thereon, an image formation layer containing (A) a polymerization initiator selected from a hexaarylbisimidazole compound and a diazo resin, and (B) an alkali soluble resin with an acid value of 5 to 200 having an acryloyl group or a methacryloyl group, the alkali soluble resin being obtained by reacting a vinyl copolymer having a monomer unit derived from acrylic acid or methacrylic acid with an epoxy compound having an acryloyl group or a methacryloyl group in the molecule, and, the process comprising the steps of imagewise exposing the light sensitive planographic printing plate material to ultraviolet laser, and removing an image formation layer at non-exposed portions with an aqueous alkali solution to form an image.
摘要:
Disclosed is a light sensitive planographic printing plate material comprising a hydrophilic support and provided thereon, a light sensitve layer containing (A) an infrared absorbing dye, (B) a radical generating agent, and (C) a radically polymerizable compound, the light sensitve layer being an outermost layer, wherein the radical generating agent is selected from the group consisting of a sulfonium salt, a iodonium salt and a diazonium salt, and the radically polymerizable compound is a radically polymerizable oxirane compound having an oxirane ring in the molecule.
摘要:
Disclosed is a light sensitive composition containing a compound represented by the following formula (1): wherein R1, R2 and R3 independently represent a hydrogen atom, a substituted or unsubstituted alkyl group, a substituted or unsubstituted alkenyl group, a substituted or unsubstituted aryl group, or a substituted or unsubstituted heterocyclic group, provided that R1 and R2 may combine with each other to form a ring or R2 and R3 may combine with each other to form a ring.
摘要:
A photosensitive composition comprising (1) a compound having at least one addition-polymerizable ethylenically unsaturated double bond, (2) an acidic vinyl copolymer soluble or swellable in alkaline water, which contains, in its molecule, a vinyl monomer having an aromatic hydroxyl group, as a constituting unit, (3) a photopolymerization initiator, and (4) a diazo resin, wherein the diazo resin is a copolycondensed compound which contains, in its molecule, an aromatic compound having a carboxyl group and/or a hydroxyl group, and an aromatic diazonium compound, as constituting units.
摘要:
A vibration device includes a support system member that supports a diaphragm to allow vibration, a tubular voice coil bobbin attached to the diaphragm, and a magnet disposed on at least one of inner and outer circumferential surface sides of the bobbin. The magnet is polarized in a vibration direction of the diaphragm, and forms a magnetic gap on a side that faces the bobbin. A voice coil is attached to the bobbin and disposed within the magnetic gap, and vibrates the diaphragm and the bobbin in response to a driving force generated when an electrical signal is inputted into the voice coil. A magnetic material member is attached to the bobbin, disposed in a balancing position within the magnetic gap, and, when vibrating with the bobbin, subjected to a magnetic attractive force in a direction away from the balancing position.
摘要:
A speaker device includes a cabinet, a speaker unit, a port, a cartridge, and an adsorbent material. The adsorbent material is disposed in the interior of the cartridge. The cartridge is a container removable from the cabinet. When the adsorbent material is deteriorated, the cartridge is replaced or the adsorbent material is reactivated, thereby making it possible to maintain, over a long period of time, the effect of physical adsorption provided by the adsorbent material.
摘要:
A speaker system that includes a speaker unit, a cabinet, a plurality of protruding materials, and a gas adsorbing material. The cabinet forms a chamber at a backside of the speaker unit. The plurality of protruding materials are formed inside the chamber and connected to the cabinet. The gas adsorbing material is supported, in a space, by the plurality of protruding materials. Accordingly, it is possible to easily increase a contact area between the gas adsorbing material and the space theresurrounding.
摘要:
A speaker device that comprises a cabinet and a speaker unit. The speaker unit is attached to an opening portion formed in a front surface of the cabinet. The speaker unit has a back surface frame, a front surface frame, a first magnetic circuit, a second magnetic circuit, an edge, a damper, a diaphragm, a voice coil bobbin, and a voice coil. A non-magnet member which is a portion of the diaphragm, the first magnetic circuit, and the second magnetic circuit play a role as a negative stiffness mechanism to suppress an influence of an acoustic stiffness, thereby achieving a small-size speaker device capable of reproducing low-frequency sound.
摘要:
The present invention provides a light sensitive planographic printing plate material which is adapted to exposure employing a laser emitting light with an emission wavelength of from 350 to 450 nm, and which exhibits high sensitivity and excellent safelight property, and a light sensitive planographic printing plate material comprising a support and provided thereon, a light sensitive layer and a protective layer (E), the light sensitive layer containing a photopolymerization initiator (A), a polymerizable ethylenically unsaturated compound (B), a dye (C) having absorption maximum in the wavelength regions of from 350 to 450 nm and a polymeric binder (D), and the light sensitive planographic printing plate material being characterized in that the protective layer contains a dye precursor (F) capable of changing to a dye absorbing light with a wavelength of from 350 to 450 nm by heating.