Abstract: There is disclosed an emulsified dispersion, in which at least one compound of the formula (1) dissolved in an organic solvent comprising at least one high-boiling organic solvent satisfying the condition X.gtoreq.85 in formula (A) is emulsified in a water medium; with the proviso that phthalates and compounds having an epoxy group and having the viscosity less than 100 mPas are excluded from said high-boiling organic solvents: formula (1) ##STR1## wherein R.sup.1, R.sup.2, R.sup.3, R.sup.4, R.sup.5, and R.sup.6, which are the same or different, each represent a hydrogen atom or a substituent, and R.sup.5 and R.sup.6 may bond together to form a 6-membered ring,formula (A)X=24.7.times.Log.sub.10 Y-11.7.times.Z+43.7wherein Y and Z stand for, respectively, the viscosity in mPas at 25.degree. C. and the specific water content in % by weight of the high-boiling organic solvent. There is also disclosed a silver halide color light-sensitive material containing the emulsified dispersion.

Abstract: A dispersion of fine solid particles having good production suitability, good dispersion stability and high spectral absorption, which is obtained by pulverizing an aqueous slurry of a dye represented by general formula (II) in the presence of a polyalkylene oxide represented by general formula (I-a) or (I-b): ##STR1## wherein a and b each represents a value of 5 to 500.D--(X).sub.y (II)wherein D represents a compound residue having a chromophore, X represents dissociative hydrogen or a group having dissociative hydrogen, and y is an integer of 1 to 7. An embodiment that a compound represented by general formula (I) is present together with the polyalkylene oxide of general formula (I-a) or (I-b) is also disclosed.

Abstract: A thermal printhead according to the present invention includes an insulating head substrate (8) having an obverse surface (8a), a reverse surface (8b), a first longitudinal edge surface (8c) and a second longitudinal edge surface (8d). The surface (8a) of the head substrate (8) is formed with an array of heating dots (10a) along the first longitudinal edge surface (8c), a common electrode pattern (11) electrically connected to the array of heating dots (10a) adjacent to the first longitudinal edge surface (8c) and individual electrodes (12) extending away from the common electrode pattern (11) and being electrically connected to the respective heating dots (10a). The heating dots (10a) are selectively heated by drive elements. The common electrode pattern (11) is electrically connected to an auxiliary electrode layer (14) which covers at least the first longitudinal edge surface (8c), reverse surface (8b) and second longitudinal edge surface (8d) of the heat substrate (8).

Abstract: In a thermal print head, a partial glazed layer has a width of 0.1 to 0.4 mm and a height of 15 to 25 .mu.m. With the partial glazed layer of this size, since the amount of accumulated heat is reduced, no trailing phenomenon would arise so as to improve the printing quality. It is also advantageous that no defective product will be manufactured because the glazed layer is not too small, with less energy consumption. As a result, a high-quality printing operation can be maintained even during such high-speed printing as not exceeding 1 ms per one line.

Abstract: There is disclosed a novel surface-active compound, and a silver halide photographic material and a processing solution for a silver halide photographic material containing the same. The surface-active compound is represented by the following formula (I): ##STR1## Wherein R.sup.1 represents an aliphatic group, an alicyclic compound group, an aromatic group, or a heterocyclic ring; R.sup.2 represents an aliphatic group, an alicyclic compound group, an aromatic group, a heterocyclic ring, or a group represented by --L--Z; Q.sup.1, Q.sup.2, and Q.sup.3 each represent a single bond, an oxygen atom, a sulfur atom, or a group represented by --N(R.sup.3)--, in which R.sup.3 represents a hydrogen atom or a group represented by R.sup.2 ; L represents a divalent linking group; and Z represents an ionic group.

Abstract: A drive control apparatus for a thermal head, capable of controlling application energy given to heater elements in the thermal head on the basis of not only history information of a present heater element but also print information including print history information of heater elements adjacent to the present heater element. A print information processing is carried out based on the print history information of the present heater element, the print information of the adjacent heater elements, and the print history information of the preceding and two times before print information of the adjacent heater elements. One example of this processing circuit includes an OR circuit for a logical sum of the preceding and two times before print information of the adjacent heater element, an AND circuit for a logical product of this OR output and a print speed signal, and an OR circuit for a logical sum of this AND output and the print information of the adjacent heater element.