There are free radical scavengers of formula (P.sub.m-L).sub.n-T.sub.q. Also provided are negative-working lithographic printing plate precursors comprising a hydrophilic substrate and a NIR photopolymerizable or UV-violet photopolymerizable imageable layer coated on the hydrophilic layer, the imageable layer also being photopolymerizable by visible light, the imageable layer having an outer surface and a thickness, the outer surface of the imageable layer being uniformly, and partially or completely crosslinked down to a depth corresponding to at most about 70% of the thickness of the imageable layer.

A resist composition includes (A1) a resin which includes a structural unit represented by formula (a4), a structural unit having a cyclic ether, and the resin has no acid-labile group, (A2) a resin having an acid-labile group, and an acid generator: ##STR00001##
wherein R.sup.3 represents a hydrogen atom or a methyl group, and R.sup.4 represents a C.sub.1 to C.sub.24 saturated hydrocarbon group having a fluorine atom and a methylene group contained in the saturated hydrocarbon group may be replaced by an oxygen atom or a carbonyl group.

A photosensitive conductive paste, a method for producing a laminated electronic component, and a laminated electronic component controlled in shrinkage behavior during firing are provided. A photosensitive conductive paste contains a conductive powder, an alkali-soluble polymer, a photosensitive monomer, a photopolymerization initiator, a solvent, and an organic flame retardant. Another photosensitive conductive paste contains a conductive powder, an organic component, and a solvent, and contains a cellulose derivative as the alkali-soluble polymer.

A mask element for flexographic printing is provided. The mask element can be used for preparing a mask that has a mask image. The mask element can include: a transparent polymeric carrier sheet; a barrier layer on the transparent polymeric carrier sheet, wherein the barrier layer comprises non-crosslinked nitrocellulose; and an imaging layer on the barrier layer, wherein the imaging layer includes a non-silver halide thermally-ablatable material comprising non-crosslinked nitrocellulose, carbon black, and an infrared (IR) dye. In some aspects, the mask element further includes a transparent overcoat layer on the imaging layer. The mask can include: imaged regions in the imaging layer, wherein the imaged regions have optical apertures that are substantially devoid of the carbon black and non-crosslinked nitrocellulose thereof; and non-imaged regions in the imaging layer, wherein the non-imaged regions have the non-crosslinked nitrocellulose, carbon black, and infrared dye.

A mask element for flexographic printing is provided. The mask element can be used for preparing a mask that has a mask image. The mask element can include: a transparent polymeric carrier sheet; a barrier layer on the transparent polymeric carrier sheet, wherein the barrier layer comprises non-crosslinked nitrocellulose; and an imaging layer on the barrier layer, wherein the imaging layer includes a non-silver halide thermally-ablatable material comprising non-crosslinked nitrocellulose, carbon black, and an infrared (IR) dye. The imaging layer is devoid of an ultra-violet absorbing material. The mask element can include a transparent overcoat layer on the imaging layer. The mask can include: imaged regions in the imaging layer, wherein the imaged regions have optical apertures that are substantially devoid of the carbon black and non-crosslinked nitrocellulose thereof, and non-imaged regions in the imaging layer, wherein the non-imaged regions have the non-crosslinked nitrocellulose, carbon black, and infrared dye.