Abstract: Disclosed herein is a resin composition or a solder resist resin composition comprising an epoxy resin (A) and/or an epoxy acrylate (B) obtained by reacting one chemical equivalent of epoxy groups in an epoxy resin with 0.1 to 1.0 chemical equivalent of acrylic acid, a styrene-maleic anhydride copolymer (C), an unsaturated group-containing compound (D) other than (B), and a photopolymerization initiator (E).

Abstract: A toner composition for electrophotography comprises, as a principal component, a reaction product of a mixture which comprises 20 to 80% by weight of a polyester resin (A) whose number average molecular weight ranges from 1,000 to 5,000, whose glass transition point ranges from 0.degree. to 50.degree. C. , whose OH value ranges from 20 to 60 KOHmg/g and which is prepared by using at least one trifunctional alcohol in an amount of from 2 to 10 mole % on the basis of the total amount of starting raw alcohols consisting of at least one diol and at least one trifunctional alcohol; and 80 to 20% by weight of a polyester resin (B) whose number average molecular weight ranges from 1,000 to 5,000, whose glass transition point ranges from 50.degree. to 90.degree. C. and whose OH value is not more than 5 KOH mg/g, with a diisocyanate.

Abstract: Titanocenes of the formula I ##STR1## in which R.sup.1 are cyclopentadienyl.sup..crclbar. groups and R.sup.2 and R.sup.3 are aromatic radicals which are substituted in both ortho-positions by fluorine and, in addition, are substituted by an acyloxy group are suitable as photoinitiators for the photopolymerization of ethylenically unsaturated compounds.

Abstract: An image holding member comprises an electroconductive substrate, a resin layer, and an image holding layer. The resin layer is placed between the electroconductive substrate and the image holding layer. The resin layer comprises metal-coated fine resin particles, and a binder resin.

Abstract: An electron beam-curable resist composition suitable for fine patterning works in the manufacturing process of semiconductor devices is proposed which is outstandingly stable in storage and capable of being developed using an aqueous alkaline developer solution without scums and giving a patterned resist layer with high contrast and orthogonal cross sectional profile of a line pattern. The composition comprises (A) a triazine compound, such as 2-(4-methoxyphenyl)-4,6-bis(trichloromethyl)-1,3,5-triazine, (B) a cresol novolac resin, of which at least 30% by weight of the phenolic moiety is derived from m-cresol, and (C) an alkoxymethylated melamine resin in specified proportions of (B):(C) and (A):[(B)+(C)]. The sensitivity of the resist composition is greatly enhanced by a heat treatment of the resist layer at 90.degree.-140.degree. C. after patternwise irradiation with electron beams.

Abstract: Compositions which include an acidified epoxy oligomer, a free radical photoinitiator and a monomer capable of being polymerized by the photoinitiator are used to form aqueous developable, photodefined coatings useful as permanent solder marks for printed circuits and permanent plating resists for additive printed wiring boards. The process for using the compositions include application as a fluid in solvents; drying; exposing to ultraviolet light; developing in an aqueous alkaline solution; and crosslinking the acidified, epoxy oligomers. The articles produced include printed wiring boards with the permanent, photoimaged resist composition thereon.

Abstract: An electrophotographic photoreceptor comprising an electrically conductive support and a photosensitive layer formed thereon, wherein said photosensitive layer contains an arylamine compound of the formula (I): ##STR1## wherein each of Ar.sup.1 and Ar.sup.2 which may be the same or different, is an arylene group which may have substituents, each of R.sup.1, R.sup.2, R.sup.3 and R.sup.4 which may be the same or different, is an alkyl group which may have substituents, an aryl group which may have substituents, or a heterocyclic group which may have substituents, provided that R.sup.1 may, together with R.sup.2 or Ar.sup.1, form a ring containing the adjacent nitrogen atom, and R.sup.3 may, together with R.sup.4 or Ar.sup.2, form a ring containing the adjacent nitrogen atom, each of R.sup.5, R.sup.6, R.sup.7 and R.sup.

Abstract: The peeling solution for photo- or electron beam-sensitive resin according to the present invention consists of an aqueous solution comprising hydrogen peroxide and a compound represented by the general formula (I) ##STR1## wherein R.sub.1 is H or an alkyl group of 1-2 carbon atoms, R.sub.2 is H or an alkyl group of 1-3 carbon atoms, and R.sub.3 is H or an alkyl group of 1-3 carbon atoms.The process for peeling off a photo- or electron beam-sensitive resin according to the present invention comprises a step of treating a photo- or electron beam-sensitive resin-coated substrate with a peeling solution for photo- or electron beam-sensitive resin cnsisting of an aqueous solution comprising hydrogen peroxide and a compound represented by the above general formula (I).

Abstract: Pressure-sensitive, heat-fusible, encapsulated toner particles are provided which have very uniform size and physical characteristics. A method for making the particles is provided wherein a latex copolymer functions as a stabilizer controlling particle size of the core composition of the toner particles. The latex copolymer becomes the shell composition thereof. The particles are particularly useful in a process for transferring a toned image comprised of such particles from a photoconductor to a receiver.

Abstract: The present invention is a high-density circuit, wherein the circuit conductors, and the spaces between conductors, are preferably less than about 0.005 inches wide, and wherein the lines are disposed over a relatively large area. The circuit is defined by a pattern of grooves in a dielectric substrate, and a conductive material is deposited in the grooves, and heated so as to form a tight bond with the substrate. The resulting circuit is stable, rugged, and capable of withstanding a wide range of adverse environmental conditions. The invention includes the circuit itself, as well as processes used in its manufacture. The invention also includes high-density print head, for a thermal or electrostatic printer, made from the circuit described. The rugged, high-density circuit of the present invention can generate a set of very closely-spaced conductors which are then used to produce a high-density image.

Abstract: A process for the preparation of encapsulated toners which comprises blending core momomer or monomers, free radical initiator, pigment, and an oil soluble shell monomer; dispersing the resulting mixture in a stabilized aqueous suspension; thereafter subjecting the stabilized droplets to a shell forming interfacial polycondensation reaction by adding a water soluble shell monomer or monomers; subsequently forming the core resin binder by heat induced free radical polymerization within the newly formed capsules; washing the toner suspension; subsequently removing water therefrom in a fluidized bed dryer to obtain a dry encapsulated toner with a surface moisture content of about 0.3 percent by weight to about 0.8 percent by weight; and thereafter blending the encapsulated toner with surface additives.

Abstract: Photopolymerizable compositions in which the photoinitiator system contains a hexaarylbisimidazole and/or a p-dialkyaminophenyl carbonyl compound in combination with a borate anion coinitiator are disclosed.

Abstract: An ionographic process which comprises the generation of an image comprised of characters, and developing the image with a toner mixture comprised of an encapsulated toner and a toner free of encapsulation.

Abstract: A photopolymerizable composition composed principally of an acrylic linear copolymer, an ethylenically-unsaturated compound and a photoinitiator and adapted to fabricate printed circuit boards. The ethylenically-unsaturated compound contains a specific acrylic ester. The photopolymerizable composition can be developed with an aqueous mild alkaline solution.

Abstract: High resolution, photosensitive electrostatic master which is positive-working with a single imagewise exposure comprising a conductive support bearing a layer of a photosensitive composition consisting essentially of (a) at least two polymeric binders, at least one binder having a Tg greater than 80.degree. C. and at least one binder having a Tg of 70.degree. C. or less such that the shift in transit time (a.sub.T) of the photosensitive layer in the range of 30%.ltoreq.relative humidity.ltoreq.60% and 65.degree. F. (18.3.degree. C.).ltoreq.temperature .ltoreq.80.degree. F. (26.7.degree. C.) is 10 or less, (b) a hexaarylbiimidazole photooxidant, (c) leuco dye, preferably stabilized, oxidized by (b), (d) a nonionic halogenated compound, preferably a hydrocarbon, and (e) at least one compatible plasticizer. A process of making positive images by a single imagewise exposure is described.

Abstract: This invention relates to initiator systems for photopolymerizable compositions. More particularly, this invention pertains to photopolymerizable compositions in which the initiator system comprises an anionic dye in combination with a borate anion coinitiator.

Abstract: A photosensitive composition is described, wherein it comprises a high-molecular compound having sulfonamide group to be insoluble in water, but soluble in an aqueous alkaline solution and a positive working photosensitive compound. The photosensitive composition is excellent in coatability and in developability when the composition is used for photosensitive lithographic printing plates.

Abstract: An electrophotographic light-sensitive material comprising a support having provided thereon at least one photoconductive layer containing an inorganic photoconductive substance and a binder resin, wherein the binder resin comprises (A) at least one resin (resin (A)) having a weight average molecular weight of from 1.times.10.sup.3 to 2.times.10.sup.4 and containing not less than 30% by weight of a polymer component corresponding to a repeating unit represented by the general formula (I) described below, and having at least one specified acidic group bonded to one of the terminals of the main chain thereof: ##STR1## wherein a.sub.1, a.sub.2 and R.sub.1 are as defined in the specification; and (B) at least one graft type copolymer (resin (B)) having a weight average molecular weight of from 3.times.10.sup.4 to 1.times.10.sup.6 and formed from, as a copolymerizable component, at least one mono-functional macromonomer (M) having a weight average molecular weight of from 1.times.10.sup.3 to 2.times.10.sup.

Abstract: A charge-coupled device (CCD) of the two-phase type is disclosed. The CCD comprises two polysilicon levels which are electrically connected to form one clock phase. In order to provide a CCD of improved transfer efficiency, two implanted regions of different dopant levels are provided under each polysilicon level. When the CCD is clocked, a four-tier potential profile is produced.

Abstract: In a photosensitive recording element which contains at least one photopolymerizable recording layer (B) consisting ofb.sub.1) at least one partially of virtually completely hydrolyzed poly(vinyl alkanecarboxylate) and/or at least one partially or virtually completely hydrolyzed vinyl alkanecarboxylate/alkylene oxide graft copolymer as a binder,b.sub.2) at least one photopolymerization initiator,b.sub.3) at least one photopolymerizable olefinically unsaturated compound (monomer) which is compatible with the binder (b.sub.1), and/or photopolymerizable olefinically unsaturated radicals which are bonded as side radicals and/or terminal radicals to the binder (b.sub.1), andb.sub.4) at least two assistants, at least one of the said assistants (b.sub.4) has been selected from the group consisting ofb.sub.41) the isoalloxazines and the alloxazines, and at least one of the other assistants has been selected from the group consisting ofb.sub.