摘要:
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 a polymerizable compound, a polymerization initiator, and an infrared absorber, and a color forming substance precursor, and a color forming substance generated from the color forming substance precursor has a maximal absorption wavelength in a wavelength range of 380 nm or more and less than 580 nm, at which an absorbance difference with respect to the color forming substance precursor is 0.1 or more, and a maximal absorption wavelength in a wavelength range of 580 nm or more and 750 nm or less, at which an absorbance difference with respect to the color forming substance precursor is 0.07 or more, and a method of preparing lithographic printing plate or a lithographic printing method, using the on-press development type lithographic printing plate precursor.
摘要:
Objects are to provide an infrared-sensitive color developing composition which develops colors in a high density by means of infrared exposure and does not significantly discolor when aged, to provide a lithographic printing plate precursor which has extremely excellent plate-inspecting properties and favorable storage stability and is capable of maintaining favorable color-developing properties and a plate making method for a lithographic printing plate in which the lithographic printing plate precursor is used, and to provide a new compound that can be preferably used as an infrared-sensitive color developer. An infrared-sensitive color developing composition of the present invention includes a compound represented by Formula (1) (Component A). In addition, the compound in the present invention is represented by Formula (1).
摘要:
There is provided a photosensitive resin composition which enables production of a lithographic printing plate precursor having a non-image portion which has good solubility in an alkali aqueous solution and which enables production of a lithographic printing plate having excellent printing durability and excellent chemical resistance, a lithographic printing plate precursor obtained by using the photosensitive resin composition, and a method for producing a lithographic printing plate. The photosensitive resin composition contains a polymer compound having a constitutional unit represented by the following Formula A-1 as a constitutional unit A and at least one constitutional unit among constitutional units represented by the following Formulas B-1 to B-6 as a constitutional unit B in the main chain, and an infrared absorbing material.
摘要:
The invention relates to an autonomous apparatus (1) for the photo-polymerization of a flexographic printing plate (5), which plate comprises a main face (5') and a base (5") opposite to said main face (5'). The apparatus comprises an exposure chamber (20) in which at least first photo-polymerization means (21) of said base (5") of said plate (5) are installed. An input section (18) and an output section (19) are defined for letting said plate (5) into/out from the exposure chamber, respectively. The apparatus further comprises moving means configured to drag said plate (5) along a feeding direction (101). According to the invention, the first photo-polymerization means (21) comprise a row of LEDs (21') aligned according to a direction substantially orthogonal to said feeding direction.
摘要:
An (ethylene, vinyl acetal) copolymer is disclosed which comprises (i) a plurality of ethylenic moieties A having a structure according to the following formula: wherein R 2 and R 3 independently represent hydrogen, a halogen or an optionally substituted linear, branched or cyclic alk(en)yl group, or an optionally substituted aromatic or heteroaromatic group; and (ii) a plurality of acetal moieties B having a structure according to the following formula: wherein L 1 represents a divalent linking group; x = 0 or 1; and R 1 represents an optionally substituted aromatic or heteroaromatic group including at least one hydroxyl group; and (iii) a plurality of acetal moieties C and/or moieties D which are different from the acetal moieties B, and which include at least one nitrogen atom.
摘要:
An (ethylene, vinyl acetal) copolymer is disclosed which comprises (i) a plurality of ethylenic moieties A having a structure according to the following formula:
wherein R 2 and R 3 independently represent hydrogen, a halogen or an optionally substituted linear, branched or cyclic alk(en)yl group, or an optionally substituted aromatic or heteroaromatic group; and (ii) a plurality of acetal moieties B having a structure according to the following formula:
wherein L 1 represents a divalent linking group; x = 0 or 1; and R 1 represents an optionally substituted aromatic or heteroaromatic group including at least one hydroxyl group; and (iii) a plurality of acetal moieties C and/or moieties D which are different from the acetal moieties B, and which include at least one nitrogen atom.