摘要:
An exchangeable lens to be mounted on a camera body by the rotation of the lens barrel is provided with a plurality of terminals arranged circularly along the circumference of the lens barrel about the optical axis of the lens barrel and are connected to a CMOS circuit in the lens. The terminals include a power supply terminal and a ground terminal through which electric power is supplied from the camera and a signal terminal through which a signal is transmitted between the camera body and the lens. The power supply terminal and the ground terminal are arranged to come into contact with their corresponding camera terminals in advance of the signal terminals when the lens is rotated to mount it on the camera body.
摘要:
A silver halide photographic light-sensitive material comprising a support having thereon at least one silver halide emulsion layer wherein the photographic light-sensitive material contains a compound represented by the following general formula (I): ##STR1## wherein Rf represents a saturated or unsaturated hydrocarbon group having from 3 to 20 carbon atoms wherein all or a part of the hydrogen atoms are substituted with fluorine atoms; A and B each represents a divalent linking group; R.sub.1 represents a hydrogen atom or an alkyl group; R.sub.2, R.sub.3 and R.sub.4 each represents an alkyl group and at least one of R.sub.1, R.sub.2, R.sub.3 and R.sub.4 represents an alkyl group substituted with a monovalent group, and X represents an anion.The photographic light-sensitive material containing the compound represented by the general formula (I) provides improved antistatic properties without adversely affecting the photographic properties and can be prepared without problems during coating such as formation of "comets" and "repelling".
摘要:
A color image forming process which comprises processing a photographic light-sensitive element comprising a support having thereon a layer containing imagewise distributed silver therein with an aqueous alkaline solution containing a stannous ion and in the presence of a dye and a bispyridinium compound represented by the following general formula: ##STR1## wherein R.sub.1 and R.sub.2 each represents a lower aliphatic hydrocarbon group or R.sub.1 and R.sub.2 are bonded each other to form a ring; n represents 0 or 1; and X.sup.- represents an anion; to bleach the dye in an imagewise manner. By the process of the present invention, color images which are stable to light, heat and moisture are formed using light-sensitive elements containing a reduced amount of silver salt and without using chemicals causing environmental pollution problems for the processing.
摘要:
A yellow dye developer having improved photographic properties represented by the formula (I) ##STR1## wherein X represents a hydrogen atom, a halogen atom, a nitro group, a hydroxyl group, an alkyl group having 1 to 4 carbon atoms, an acylamino group having 1 to 4 carbon atoms; Z represents an atomic group necessary for completing a furan ring or a benzofuran ring; Y represents a hydroxyl group, an acyloxy group having 1 to 4 carbon atoms, or an alkoxyacyloxy group having 2 to 4 carbon atoms; Ar represents an aromatic ring; R.sub.1 represents a hydrogen atom, a halogen atom, an acyl group having 1 to 4 carbon atoms, or an alkyl group having 1 to 5 carbon atoms; R.sub.2 represents a hydroxyl group, an acyloxy group having 1 to 4 carbon atoms, or an alkoxyacyloxy group having 2 to 4 carbon atoms with the R.sub.2 group being at the ortho-position to the azo group; m and n each is an integer of 1 to 4; and at least one of X, Z, Ar and R.sub.1 being bonded to a polyhydric phenol moiety directly or through an atom or a divalent group; and a photographic material containing the dye developer.
摘要:
A dye developer represented by the following general formula (I): ##EQU1## WHEREIN X represents the atoms necessary for completing a monocyclic or polycyclic aromatic group; Y represents an acyl group having 1 to 4 carbon atoms; Ar and Z each represents a monocyclic polycyclic aromatic group, with Ar being connected either directly or through a divalent atom or group to a polyhydric phenol moiety having a silver halide developing action; R represents an alkyl group or an alkoxy group; n represents an integer of 0 to 4; and Q represents ##EQU2## wherein Z' represents a hydrogen atom or an alkyl group, R.sub.2 and R.sub.3 each represents a hydrogen atom or an aliphatic group, or R.sub.2 and R.sub.3 can combine to form a divalent aliphatic group and a light-sensitive material comprising a support having thereon a light-sensitive silver halide emulsion layer with the dye developer of this invention associated therewith.
摘要:
A color diffusion transfer photographic light-sensitive material which comprises a support having thereon at least one light-sensitive silver halide emulsion layer containing a silver halide combined with a dye developer, one of the light-sensitive silver halide emulsion layers being combined with a dye developer represented by the following General Formula (I); ##EQU1## wherein Ar represents a divalent aromatic group; X represents ##EQU2## with R being an alkyl group having 1 to 3 carbon atoms, --NHCO-- with the nitrogen atom being connected to the Ar group or --OCO-- with the oxygen atom being connected to the Ar group; and Y represents an aromatic group having a substituent containing a hydroquinonyl group.