摘要:
A nuclear magnetic resonance imaging scheme capable of reducing the eddy currents induced within the living body outside of the imaging region, so as to protect the patient against the nerve stimulation due to the eddy currents, and obtaining the MR images at high image quality by protecting the image quality against the N/2 and chemical artifacts. The nerve stimulation is prevented by providing a shield member for shielding a nerve stimulation sensitive portion of the patient located outside of the imaging region from a change of the gradient magnetic fields. The artifacts are prevented by applying a reading gradient magnetic field which is repeatedly switching its polarity along a phase encoding gradient magnetic field applied at a rate of once in every two switchings of the reading gradient magnetic field, separating the acquired NMR signals resulting from odd and even turns of switchings of the reading gradient magnetic field as separate data sets, and re-constructing MR images from the separate data set for odd turns and even turns separately.
摘要:
A silver halide color photosensitive material which forms a cyan dye that has superior heat resistance and that will not readily fade in a reducing atmosphere. The silver halide color photosensitive material contains in at least one layer on a support at least one coupler represented by formula (I): ##STR1##wherein R.sup.1 represents hydrogen atom or a substituent; R.sup.2 represents a substituent; X represents hydrogen atom or a group releasable on a coupling reaction with an oxidation product of a color developing agent; Z.sup.1 represents a nonmetallic atom group necessary for forming a nitrogen-containing, six-membered, heterocyclic ring which has at least one dissociative group: Z.sup.1 cannot be --C(.dbd.O)--N(R)-- C(.dbd.O)--NH--; and R represents a substituent.Also disclosed is a novel dye forming coupler which exhibits a high coupling activity and which gives a dye having a large molar extinction coefficient and superior stability, the coupler being represented by the following formula (XX) or (XXI). Also disclosed is a silver halide color photosensitive material which contains at least one of the dye forming couplers of formulae (XX) and (XXI) and which provides sharp dye images with high fastness properties. ##STR2## wherein EWG represents an electron withdrawing group having a Hammett's .sigma..sub.p value of not less than 0.3; R.sub.1 and R.sub.2 each represent a substituent; and X represents hydrogen atom or a group releasable on a coupling reaction with an oxidation product of an aromatic primary amine developing agent.
摘要:
A silver halide color photographic material comprising a support having thereon at least one light-sensitive silver halide emulsion layer containing at least one 1H-pyrrolo[1,2-b][1,2,4]triazole cyan coupler represented by the following general formula (I) or (II): ##STR1## wherein R.sub.1 and R.sub.2 each represents an electron withdrawing group having a Hammett's substituent constant .sigma.p value of 0.20 or more; R.sub.1 and R.sub.2 may be bonded to form a ring; the sum of a Hammett's substituent constant .sigma.p value of R.sub.1 and R.sub.2 is 0.65 or more; R.sub.3 represents a hydrogen atom or a substituent; and X represents a hydrogen atom or a substituent capable of being released upon coupling with an oxidation product of an aromatic primary amine color developing agent; said coupler may be in a form of a bis-compound or a polymer formed at R.sub.1, R.sub.2, R.sub.3 or X; and a cyan image forming method comprising imagewise exposing a silver halide color photographic material comprising a support having thereon at least one light-sensitive silver halide emulsion layer and subjecting the exposed photographic material to color development with an aromatic primary amine color dveloping agent at the presence of the above-described 1H-pyrrolo[1,2-b][1,2,4]triazole cyan coupler.
摘要:
A dry image-forming process is disclosed. The dry image-forming process of the invention comprises heat developing a light-sensitive material comprising a support having thereon at least a photosensitive silver halide, a binder, and a dye releasing redox compound said dye releasing redox compound being reductive to the photosensitive silver halide and being capable of releasing a hydrophilic dye upon reaction with the photosensitive silver halide under heating, after or simultaneously with imagewise exposure, to form imagewise a mobile hydrophilic dye and heating, after simultaneously with the heat development, the light-sensitive material together with a dye-fixing layer in the presence of a hydrophilic thermal solvent to thereby transfer the mobile hydrophilic dye onto the dye-fixing layer to form a dye image and fix the dye image. The heat development is carried out in a state containing substantially no water, and the whole of steps are carried out without particular supplying a solvent.
摘要:
There is disclosed a cyan dye-forming coupler represented by formula (I) and a silver halide color photographic material containing same. ##STR1## wherein EWG represents an electron-attractive group having a Hammett substituent constant .sigma..sub.p value of 0.30 or more, R.sub.1 and R.sub.2 each represent a substituent, l represents an integer of 0 or 1, X represents a hydrogen atom or a group capable of being released upon coupling reaction with the oxidized product of an aromatic primary amine derivative, and Y represents a hydroxyl group or a sulfonamido group.
摘要:
A color light-sensitive material comprising a support provided thereon at least one light-sensitive silver salt layer combined with an image forming compound represented by formula (I) ##STR1## wherein Dye represents a cyan dye group or a precursor thereof represented by formula (II) defined in the specification;X represents a chemical bond or a linking group;Y represents a group which releases Dye corresponding to or countercorresponding to light-sensitive silver salt having an imagewise latent image and makes a difference in diffusibility between the dye thus released and the compound represented by formula (I), provided that Dye and X are linked to each other by A or E in formula (II); andq represents an integer of 1 or 2, provided that when q is 2, the two groups (Dye--X) may be the same or different.
摘要:
A real-time control system for use with an NMR spectrometer. The control system comprises a control section, a plurality of functional units controlled by the control section, and a bus line connecting the control section with the functional units. Each functional unit has a memory storing event data specifying the conditions of control means such as gates included in the functional unit. The control section has a memory storing timing data and event codes specifying event data. The control section successively produces timing signals and event codes according to the timing data. The timing signals are transmitted to the functional units over the bus. Each functional unit reads event data from its memory according to the incoming event codes and controls its gates according to the event data in synchronism with the timing signals.
摘要:
Disclosed is a dye forming coupler represented by formula (I): ##STR1## wherein R.sup.1 and R.sup.2, which may be the same or different, each represents a substituent group, and X is a hydrogen atom or a group which can be eliminated by a coupling reaction with the oxidized species of a primary aromatic amine derivative.
摘要:
A novel color image recording method is provided, which comprises exposing to light a light-sensitive material obtained by dispersing a composition containing at least a photopolymerization initiator, a color image-forming substance and a polymerizable compound in a hydrophilic binder and then coating said dispersion on a support, subjecting said polymerizable compound in the exposed portions to polymerization, and then (a) eluting said color image-forming substance contained in the unpolymerized polymerizable compound in the unexposed portions with an alkaline aqueous solution or (b) subjecting said color image-forming substance contained in the unpolymerized polymerizable compound in the unexposed portions to chemical change so that it is discolored, thereby forming dye images.
摘要:
A heat-sensitive transfer material comprising a support having provided thereon a heat-sensitive transfer layer, wherein said layer contains a dye represented by formula (I): ##STR1## wherein R.sub.1 and R.sub.2, which may be the same or different, each represents a hydrogen atom, a halogen atom, an alkyl group, a cycloalkyl group, an alkoxy group, an aryl group, aryloxy group, an aralkyl group, a cyano group, an acylamino group, a sulfonylamino group, a ureido group, an alkylthio group, an arylthio group, an alkoxycarbonyl group, carbamoyl group, a sulfamoyl group, a sulfonyl group, an acyl group, or an amino group;R.sub.3 and R.sub.4, which may be the same or different, each represents an alkyl group, a cycloalkyl group, an aralkyl group, or an aryl group;provided that either R.sub.3 and R.sub.4, R.sub.2 and R.sub.3, or R.sub.2 and R.sub.4, may combine to each other and the adjacent atoms to form a ring;n represents an integer of from 0 to 3;X, Y and Z, which may be the same or different,each represents a ##STR2## group or a nitrogen atom, wherein R.sub.5 represents a hydrogen atom, an alkyl group, a cycloalkyl group, an aralkyl group, an aryl group, an alkoxy group, an aryloxy group, or an amino group;when X and Y or X and Z each represents ##STR3## they may be combine with each other to form a saturated or unsaturated carbon ring; andprovided that the aforesaid group comprising R.sub.1, R.sub.2, R.sub.3, R.sub.4 and R.sub.5 each may be substituted.