摘要:
A novel method for formation of an image comprising a heating step, comprising the heating carried out in the presence of a compound of general formula (I):X--SO.sub.2 (DI) (I)wherein X represents a reducing group capable of reducing a silver salt and capable of being oxidized by heating and in its oxidized state capable of releasing a compound represented by (DI)--SO.sub.2 NH.sub.2 by reaction with a nucleophilic agent; and (DI) represents a development inhibiting group capable of inhibiting the oxidation reduction reaction of the silver salt and a reducing aent.The compound of the formula (I) functions to inhibit development after a certain period of time from the beginning of heat development.The present method provides a stable image with reduced fog and image mottle.
摘要:
An image-forming process involving a heating step is disclosed, which comprises conducting the heating in the presence of a compound represented by the following general formula (I): ##STR1## wherein: R.sup.1 and R.sup.2, which may be the same or different, each represents a group selected from an aryl group, a substituted aryl group, a heterocyclic group, and a substituted heterocyclic group;R.sup.3 represents a hydrogen atom, an alkyl group, a substituted alkyl group, a cycloalkyl group, a substituted cycloalkyl group, an aralkyl group, a substituted aralkyl group, or a group selected from those which are referred to with respect to R.sup.1 and R.sup.2 ;R.sup.1, R.sup.2, and R.sup.3 may form a ring structure via a hydrocarbon chain, a hetero atom-containing hydrocarbon chain or a hetero atom, or may be directly bound to each other to form a ring structure; andPUG represents a photographically useful group.
摘要:
A process of forming images by heat developing a heat developable light-sensitive material after imagewise exposure is described, comprising heating a heat developable light-sensitive material in the presence of a compound represented by general formula (I) ##STR1##
摘要:
A method for forming an image which has a step of heating an image-forming material in the presence of a compound represented by formula (I), whereby unevenness of image density and increase in fog due to fluctuation of development temperature, which have so far been caused in heat-developable photosensitive materials, can be prevented from occurring: ##STR1## wherein R represents a hydrogen atom, or a group selected from a class consisting of groups represented by formulae (A) to (C) ##STR2## wherein R.sup.11 and R.sup.12 each represents a substituted or unsubstituted alkyl group, a cycloalkyl group, a substituted or unsubstituted alkenyl group, an aralkyl group, a substituted or unsubstituted aryl group, a heterocyclic group, an alkyloxy group, an aryloxy group, an alkylthio group, an arylthio group, or a substituted or unsubstituted amino group, or R.sup.11 and R.sup.12 combine with each other to form a 5- or 6-membered ring;Q represents a hydrogen atom, an alkyl group, or an aryl group; TIME represents a timing group; PUG represents a photographically useful agent moiety; n represents 0 or an integer; and Z represents atoms forming a benzene ring.
摘要:
A method for forming an image, which comprises heating a light-sensitive material in the presence of a compound capable of forming a 2-mercaptobenzazole ring by a ring closing reaction when heated.In accordance with the method of the present invention, development is stopped at an appropriate time of development whereby an image having a high maximum density and low fog is obtained.A heat-developable light-sensitive material containing the compound is also disclosed.
摘要:
A color light-sensitive material is disclosed. The material is comprised of a support having provided thereon at least one image-forming compound represented by formula (I)(Dye--X).sub.q Y (I)wherein X, Y, q, and Dye are as defined herein. The light-sensitive material shows excellent yellow dye-transferring properties and provides a yellow dye having excellent light fastness.
摘要:
A color light-sensitive material is disclosed. The material is comprised of a support having provided thereon at least one image-forming compound represented by formula (I) ##STR1## wherein X, Y, q, and Dye are as defined herein. The light-sensitive material shows excellent yellow dye-transferring properties and provides a yellow dye having excellent light fastness.
摘要:
A heat-developable photosensitive material comprising at lesat (1) a photosensitive silver halide, (2) a binder, (3) a dye-providing substance, and (4) a specific reducing agent other than commonly used reducing agents for silver halide on a support can be heat developed to produce images having a high density and less fog and has improved shelf stability.
摘要:
A tiller for cultivating soil has a power source and a tilling shaft mounted for undergoing rotation by a driving force supplied from the power source. The tilling shaft has a hollow outer shaft and an inner shaft extending through the outer shaft. The inner shaft has a variable rotating speed and/or direction of rotation relative to the outer shaft. A power transmission mechanism transmits a driving force from the power source to the tilling shaft. The power transmission mechanism has a first power transmission system for transmitting the driving force from the power source to the outer shaft and a second power transmission system transmitting the driving force from the power source to the inner shaft. The second power transmission system has a hydrostatic transmission comprised of a hydraulic pump and a hydraulic motor for effecting a stepless change of the rotating speed of the inner shaft as well as a selective change of its direction of rotation. Tilling claws are disposed on the tilling shaft for tilling soil.