Abstract: Disclosed is a light-sensitive silver halide multi-layer color photographic material having a light-sensitive silver halide emulsion layer combined with a non-diffusion coupler on a support, which comprises a light-sensitive silver halide emulsion layer farthest from the support which contains mono-dispersed silver halide grains comprising primarily (100) faces and having an average grain size of 0.2 to 0.8 .mu.m.The light-sensitive silver halide multi-layer color photographic material of the present invention has stable performance against fluctuations in developing processing conditions, has high sensitivity and low fogging.

Abstract: A silver halide X-ray photosensitive material has a support bearing thereon a silver halide emulsion layer. The layer has at least three kinds of silver halide emulsions whose photographic characteristics are substantially different from each other. Out of at least three kinds of the silver halide emulsions, at least one of them is a monodisperse emulsion E.sub.1 and at least another one of them is a polydisperse emulsion E.sub.2.

Abstract: A silver halide color photographic light-sensitive material comprises a support and at least one light-sensitive layer. This layer has a plurality of silver halide emulsion layers substantially identical in color sensitivity, but differing in speed. The light-sensitive layer is comprised substantially of monodispersed silver halide emulsions A and B, each containing silver halide particles of the core/shell-type. The silver halide particle sizes of emulsions B and A have a ratio, when multiplied by 100, of less than 70 and the silver halide particles of emulsion B have a silver iodide content in their core that is not less than 5 mole % smaller than that of the core of the silver halide particles of emulsion A.

Abstract: A silver halide color photographic material is disclosed which contains a magenta color image-forming coupler represented by the following formula (I) and a compound represented by the following formula (II): ##STR1## wherein Z represents the group of nonmetallic atoms necessary for forming a nitrogen-containing heterocyclic ring, provided that the ring to be formed by said Z may have a substitutent;X represents a hydrogen atom or a substituent capable of leaving upon reaction with the oxidized product of a color developing agent; andR represents a hydrogen atom or a substituent. ##STR2## wherein R.sub.1 is an aliphatic group, a cycloalkyl group or an aryl group; andY represents the group of nonmetallic atoms necessary for forming a 5- to 7-membered heterocyclic ring taken together with the nitrogen atom, provided that at least two hetero atoms among the heterocyclic ring-forming nonmetallic atoms including the nitrogen atom are not adjacent to each other.

Abstract: An optical beam scanning apparatus wherein a beam shaping device for forming a flat light beam which has a large width in the scanning direction and which is substantially parallel with the direction of the optical axis is disposed between a light source and rotary polygonal mirror, and a cylindrical lens bent to have both ends in the longitudinal direction thereof approaching to the scanned plane is disposed between a condensing lens for condensing the light beam reflected by the rotary polygonal mirror and a scanned plane in the vicinity of the latter. The rotary polygonal mirror and the scanned plane are arranged to have a conjugate relation with each other from geometrical optics. The light beam is converged so as to generate the beam waist near the scanned plane.

Abstract: An original picture image recorder and method wherein a supplementary data display device for displaying supplemental data being copied in addition to original data is provided close to a document glass plate on which documents being recorded are mounted, and a device for preventing the background area of the display device in a display state from generating photographic fog on materials being recorded is provided. A light source for illuminating the display device as one for preventing photographic fog is provided separately from an exposure device for exposing the display device.

Abstract: In a process for forming an image comprising;(i) forming a latent image on a latent image bearing member comprising an organic photoconductive photosensitive member;(ii) forming a magnetic brush with a two-component developer comprising a toner and a carrier on a developer carrying member arranged as opposed to said latent image bearing member; and(iii) developing said latent image by brushing it with said magnetic brush in developing region;the improvement wherein said latent image bearing member and said developer carrying member move in the same direction in the developing region, and the ratio V.sub.S /V.sub.P of the linear velocity of said developer carrying member V.sub.S to the linear velocity of said latent image bearing member V.sub.P is within the range of 1.9.ltoreq.V.sub.S /V.sub.P .ltoreq.4.According to this process, an image which is free from fog, yet high in image density and stable for repeated copying can be obtained.

Abstract: A photoreceptor comprising a photosensitive layer and a support, wherein said photosensitive layer contains a polycarbonate compound binder selected from the group consisting of Formula A and B, ##STR1## wherein R.sub.1 and R.sub.2 are independently hydrogen, substituted or unsubstituted aliphatic, or a substituted or unsubstituted hydrocarbon ring, provided that at least one of R.sub.1 and R.sub.2 has at least 3 carbon atoms, Z represents a group of atoms necessary to constitute a substituted or unsubstituted carbon ring or a substituted or unsubstituted heterocyclic ring, R.sub.3 to R.sub.10 in Formulas A and B are independently hydrogen, halogen, substituted or unsubstituted aliphatic, or a substituted or unsubstituted hydrocarbon ring, and n is a number from 10 to 1000.

Abstract: As a projection optical system for a measuring projector, a telecentric optical system is required, and, moreover, it is advantageous when a zoom lens system is utilized. The present invention provides a telecentric zoom lens system to be used with a measuring projector wherein an iris is arranged between the lens groups to be moved for variation of magnification and wherein the iris is also moved at the time of zooming in order to prevent increase in the diameter of the front lens and increase in distortion which are caused when the telecentric character is given to a known zoom lens system.To arrange the iris between a second and third lens groups in a zoom lens system comprising four lens groups respectively having positive, negative, positive and positive powers and to enable to move the iris integrally with the third positive lens group, it is preferable to add a negative lens group between the two positive lens groups, i.e.

Abstract: An exposure optical apparatus with two sets of wire pulleys disposed on both sides of a carriage for optical scanning of a document, the wire pulleys working for drive and control of the carriage, wherein two sets of fixed pulleys are provided on an apparatus fixed zone and laid on corresponding ends of the wire pulleys to a common wire, and a stopper member for determining an initial position of the carriage is provided on the apparatus fixed zone, thereby setting an initial posture of the carriage. The wires of both the wire pulleys are constituted of a common single wire, two sets of moving pulleys are provided on both sides of the document board carriage, and the wires are laid symmetrically on an axis of the center of the direction in which the document board carriage moves.

Abstract: An optical system of a reproducing apparatus having an exposure light source wherein the reflector of said exposure light source has a form of a curve of secondary degree and is adapted to be split into an upper half part and a lower half part at the non-reflecting surface of said reflector, said upper half part and lower half part being connected with a connecting member. The exposure device has a holding frame for holding an exposure optical system and guide members for movably guiding said holding frame. The guide members include an upper guide member disposed at the upper side of said holding frame and a lower guide member disposed at the lower side of said holding frame, said holding frame making a sliding contact with said lower guide member and contacting said upper frame member through an elastic member. On a lower position of said upper guide member is disposed an electrical collecting member.

Abstract: In a heat-developable color photo-sensitive material comprising a support bearing thereon a photographic component layer containing at least a photo-sensitive silver halide, a reducing agent, a binder and a dye-providing material; said heat-developable photo-sensitive material characterized in that at least one of said dye-providing materials is a polymer having a repetition unit being derived from a monomer Formula [I] below: ##STR1## wherein , Q represents an ethylene unsaturated group or a group having an ethylene unsaturated group; Z represents a group of atoms required for forming a nitrogen-containing heterocyclic residual group in which a polymerizable ethylene unsaturated bonding may also be incorporated into the heterocyclic ring, together with a nitrogen atom; R.sub.1 represents an alkyl, aryl, alkylamino, anilino, acylamino or ureido group; Ar represents an aryl group or a heterocyclic residual group; and n is an integer of zero or one.

Abstract: A colored image-forming method is initiated by forming a latent image on an image retainer in the form of a rotatable drum. Then, a powdered toner is caused to fly from a developer-feeding carrier and adhere to the retainer in the presence of an oscillating electric field. Similar steps are carried out using different powdered toners to superimpose toner images of different colors on the retainer. Each developer-feeding carrier has a magnet member to exert a magnetic force to the corresponding toner. A magnetic attracting force acting between the toner particles and the magnet member becomes smaller according to the increase of the number of the repetition of the above steps.

Abstract: A support for photographic use comprising a polyester film is disclosed which contains at least one compound of the following formula (I) and at least one quaternary ammonium salt of the following formula (II): ##STR1## a hydroxyl group, a nitro group, an amino group or a hydrogen atom; R.sub.1, R.sub.2, R.sub.3, R.sub.4 and R.sub.5 are each a hydrogen atom, a halogen atom, an alkoxy group, an alkyl group, an aryloxy group, an aralkoxy group, a hydroxyalkyl group, --(OCH.sub.2).sub.m OH (m is an integer or 1 to 4) or ##STR2## B, C and D are not simultaneously at least one member selected from the group consisting of a hydrogen atom, a nitro group and an amino group); ##STR3## (wherein R.sub.6, R.sub.7, R.sub.8 and R.sub.9 are each an alkyl group, an aralkyl group or an allyl group; X is an anion; and n represents the number of charges on X).

Abstract: A recording apparatus such as a photocopier, includes a heat fusing device and a power source connected thereto via a power controller. The power controller controls the supply of power to the heat fusing device such that full power is supplied to the heat fusing device during a recording operation, and reduced power is supplied to the heat fusing device during a given period of time beginning from the completion of a recording operation, the power controller reducing the power supplied to the heat fusing device in accordance with a given function of time over the given period of time. The power controller cuts offf completely the supply of power to the heat fusing device at the end of the given period of time beginning after the completion of a recording operation.

Abstract: In a sorting machine designed for use with a copying machine capable of handling paper of various sizes, a vertical array of sorting bins includes an uppermost sorting bin with an expandable surface area. This allows the sorting machine to handle extraordinarily large paper without increasing the footprint of the sorting machine. The uppermost position ensures that when expanded, the expandable sorting bin will stand over the copying machine, which does not normally need great overhead clearance. The expandable sorting bin may be expandable by virtue of a hinged, sliding or detachable extension plate, and may be expanded automatically when the copying machine detects and signals the use of larger paper. Multiple expandable sorting bins may be used for sorting the extra-large paper. In addition, the sorting machine may have one normal-sized sorting bin in alignment with a main receiving tray of the copying machine so as to allow the main tray to accommodate extra-large paper.

Abstract: A developing method for an electrostatic latent image comprises the steps of applying and retaining a layer of developer on a supporting sleeve, conveying the developer on the supporting sleeve to a development area, and regulating the quantity of the developer on the supporting sleeve by a developer regulating device before the developer is conveyed to the development area. The regulating step includes impressing a bias voltage so as to establish a field between the supporting sleeve and the regulating device in order to selectively retain developer on the supporting sleeve which has a desired polarity and quantity of charge for development. The developer regulating device may be a sleeve rotated in a direction opposite to the direction of rotation of the supporting sleeve, and has a bias voltage impressed thereon.

Abstract: An electromagnetically driven shutter device in which a first coil drives shutter blades to control an aperture and shutter time. A second coil controls the moving distance, that is maximum aperture, of the first coil by being located at a plurality of positions including its initial position.

Abstract: A thermal transfer recording medium having a thermally transferable coloring agent containing layer coated on a support. The coloring agent containing layer is separated into at least two layers, one of which is the upper layer and the other of which is the lower layer, and the layer farthermost from the support is a thermally transferable layer containing substantially no coloring agent.

Abstract: Toner for developing electrostatically charged images comprising nuclear particles formed by polymerization, hydrophobic silica, and a resin, wherein said resin is coated on said nuclear particles and said silica is dispersed in said resin. A method for producing said toner is also disclosed, said method comprising polymerizing nuclear particles, dissolving a resin in a solvent, which asserts a lesser solvating action against said nuclear particles than against said resin, to form a solution, dispersing said hydrophobic silica in said solution, mixing said nuclear particles with said dispersion, and drying said mixture.