Abstract:
A process for development-processing a silver halide black-and-white photographic light-sensitive material without silver stain and fog by the use of a developing solution which contains 0.1 mole/l or more of sulfite and at least one compound represented by the following general formula (I) or (II) ##STR1## wherein M represents a hydrogen atom, an alkali metal atom or an ammonium group; R represents a hydrogen atom or an alkyl group having 1 to 4 carbon atoms; n represents an integer of 1 to 8; and X represents a sulfonic acid group, a sulfonate group, a carboxylic acid group or a carboxylate group.
Abstract:
A process for forming photographic images comprising a silver image and a dye image, comprising development processing an imagewise exposed silver halide photographic light-sensitive material containing a 4-alkoxy-1-naphthol represented by the formula (I) ##STR1## wherein R represents an alkyl group, an alkoxyalkyl group, or a hydroxyalkyl group, and the number of carbon atoms in the substituent represented by R is from 1 to 4.The process of this invention is particularly useful in the field of X-ray photography, in order to provide an image of increased density for a given silver content. A novel silver halide photographic light-sensitive material includes the above 4-alkoxy-1-naphthol in a photographic colloid layer thereof, preferably the silver halide emulsion layer.
Abstract:
An apparatus for stranding an outer layer of wires on an inner layer cable core is disclosed. The apparatus comprises a tubular stranding machine comprising a rotating tube within which are stationary mounted on the same axis a series of cradles each supporting a spool of wire from which are paid-off the outer wires, means for guiding said outer wires along the outside wall of said tube towards a stranding die located at the front of the stranding machine, means for guiding a cable core originating from the back of the stranding machine along the outside wall of the tube, and a wire straightener stationary mounted at the front of the stranding machine ahead of the stranding die and through which is passed the cable core to eliminate the waviness of the cable core due to rotation during traveling along the outside wall of the tube.
Abstract:
A tapping machine provided with a quill for rotatably supporting a spindle which holds a tap on one end thereof, a reversible electric motor for rotating the spindle and axially reciprocating the quill, an overload release clutch mounted in a power transmitting mechanism which is disposed between the quill and the motor, for suspending the power transmission between the quill and the motor when an overload is applied on the quill, and pulse signal generating means mounted between the clutch and the quill in the power transmitting mechanism for generating one pulse signal in response to each one pre-set unit distance of the quill during the forward motion thereof. The tapping machine performs a working cycle in good order wherein the spindle advances from the start position while being forwardly rotated until the number of pulse signals generated from the pulse signal generating means accords with a pre-set number and returns while being backwardly rotated back to the start position. The tapping machine is also provided with means for generating overload sensing signal when an interval between any two pulse signals from the pulse signal generating means exceeds a predetermined time duration, so as to backwardly rotate the motor immediately after the generation of the overload sensing signal, that is, an abnormal condition warning signal for returning the spindle to the start position.
Abstract:
A method of regenerating a waste photographic processing solution (e.g., a waste developing solution or a waste bleaching-fixing solution) by electrodialysis utilizing ion exchange membranes, which uses an electrodialyzer characterized by the arrangement of ion exchange membranes employed therein that a space between a cathode and an anode is partitioned by cation exchange membranes and anion exchange membranes alternately arranged, and an anode compartment is provided in a first place in the direction from the anode to the cathode, and wherein there is further provided a plural number of desalting compartments through each of which the waste photographic processing solution is passed, each of which compartments is partitioned by a cation exchange membrane on the cathode side and by an anion exchange membrane on the anode side, and an equal number of concentrating compartments, through each of which a specific solution for the concentrating compartment is passed, and each of which compartments is partitioned by an anion exchange membrane on the cathode side and by a cation exchange membrane on the anode side) arranged alternately in such a way that a desalting compartment is positioned on the side farthest from the anode, wherein a concentrating compartment that it is partitioned by cation exchange membranes on both sides thereof is provided adjacent to the cathode side of the desalting compartment partitioned on the side farthest from the anode, and a cathode compartment is provided adjacent to the last concentrating compartment, and wherein a common solution of electrolytes is supplied to both the cathode and the anode compartments of the electrolyzer and circulated therethrough.
Abstract:
A photographic two-equivalent magenta coupler represented by the following general formula (I): ##STR1## wherein [A] represents a magenta color image-forming coupler residue, and the ##STR2## moiety represents a group replacing a hydrogen atom of an active methylene group in coupler [A] wherein Z.sub.a Z.sub.b, Z.sub.c and Z.sub.d, which can be the same or different, each represents a methine group or an --N.dbd. group, and the nitrogen-containing ring formed by Z.sub.a to Z.sub.d may further be substituted with a fused ring, with the proviso that the ##STR3## moiety does not represent a benzotriazolyl-1, benzotriazolyl-2, benzimidazolyl-1 or indazolyl-1 group; a photographic light sensitive material containing the photographic coupler; and a method of forming images using the photographic coupler.
Abstract:
A two-equivalent magenta coupler in which the coupling position is substituted with a sulfonamido group, and capable of forming a magenta color image on coupling with an oxidation product of an aromatic primary amine developing agent, and a silver halide color photographic light-sensitive material having at least one silver halide emulsion layer on a support and containing the two-equivalent magenta coupler.
Abstract:
A photographic two-equivalent magenta coupler represented by the following general formula (I):a--s(o).sub.n --R (I)wherein A represents a residue of a magenta color image forming coupler in which one of the hdyrogen atoms on the active methylene group is eliminated; R represents an alkyl group, an aryl group or a heterocyclic group; and n represents 1 or 2; and color photographic light-sensitive material containing the two-equivalent magenta coupler.
Abstract:
A photographic two-equivalent magenta coupler, capable of forming a magenta color image upon coupling reaction with an oxidation product of an aromatic primary amine developing agent, represented by the following general formula I: ##STR1## wherein (A) represents a residue of a magenta color image forming coupler; ##STR2## represents a group which is substituted FOR ONE HYDROGEN ATOM OF THE ACTIVE METHYLENE GROUP IN THE COUPLER A; Z represents an oxygen atom or a sulfur atom; B represents a -- Y group, a -- D -- Y group, or a ##STR3## group; D represents an oxygen atom or an --NR -- group; R represents a hydrogen atom, an alkyl group or an aryl group; Y represents an alkyl group, an aryl group or a heterocyclic group; and Q in the ##STR4## group represents the non-metallic atoms necessary to form a 5-membered or 6-membered nitrogen containing heterocyclic ring; and color photographic light-sensitive materials containing the two equivalent magenta coupler.
Abstract:
An image forming apparatus includes: an image forming apparatus main body, a driven member removably disposed in the image forming apparatus main body, a rotary driver that rotates by current flowing, and after the blockage of the current flowing, continuously rotates due to an inertial force, a coupling part that has a driving-side member and a driven-side member, wherein when the driven-side member is mounted to the image forming apparatus main body, the driving-side member and a driven-side member are facing each other, and when the driving-side member and the driven-side member engage each other in the rotating direction, the rotary driver and the driven-side member are coupled to transmit the rotation of the rotary driver to the driven-side member, and a controller that controls so that, when the driven-side member is mounted to the image forming apparatus main body, the current flows to the rotary driver, and after the elapse of a certain period of time the current flow to the rotary driver is blocked.