Abstract: A dry toner for developing an electrostatic latent image comprising toner particles and fine particles of a lubricant coated with an inorganic compound fine powder and an image formation method using the same. The toner is excellent in fluidity, cleaning properties, stability with environmental changes, and durability.

Abstract: A lens-fitted photographic film unit comprises a main body having a photograph-taking function and a rear cover for shielding the rear of the main body in a light-tight manner. The main body has a film supply chamber and a film take-up chamber both of which are provided with respective bottom openings. The film supply chamber is provided with a first side edge limiting plate so as partially to shield the bottom opening. The rear cover is provided with a cap for closing the bottom opening of the film supply chamber and a second side edge limiting plate. A winding shaft is engaged with a film leader of a photographic film, drawn from a photographic film cassette and positioned in a film supply chamber. Similarly, the empty photographic film cassette is positioned in a film take-up chamber.

Abstract: A dry toner for developing electrostatic images is disclosed, which comprises a binder resin, a colorant and a wax consisting of a low molecular weight polypropylene and a high density polyethylene having a density of 0.96 or more, a molecular weight of 2,000 to 20,000 and an acid value of 1 or less, wherein the wax is dispersed in the binder resin to form domains having a size of 0.1 to 1.5 .mu.m. A process for producing the toner is also disclosed.

Abstract: A dry toner composition containing titanium dioxide particles, the surfaces of the particles comprising an organic compound having a melting point of from about 40.degree. C. to about 150.degree. C.

Abstract: A carrier for use in developing an electrostatic or magnetic latent image in electrophotography, electrostatic recording, electrostatic printing or the like, which carrier is produced by atomizing a molten mixture of a magnetic powder and a binder resin containing a polyolefin and a polyolefin having a functional group. The polyolefin having a functional group is present in an amount ranging from about 50% by weight or less based on the total weight of the binder resin.

Abstract: A toner composition for thermal fixing is disclosed, comprising a colorant, an external additive and a binder resin that contains a thermoplastic resin having a glass transition point of from 20.degree. C. to less than 50.degree. C. and a polyolefin polymer having an average molecular weight of 800 or more, the polyolefin polymer being present in an amount of from 5 wt % to less than 50 wt % of the total binder resin.

Abstract: A dry developer for an electrophotographic process, said dry developer being composed of a toner and a dispersion type carrier composed of a resin and a magnetic powder, wherein polyethylene having a molecular weight of not larger than 10,000, a density of at least 0.95, and an average volume diameter of not larger than 15 .mu.m is externally added to the toner or directly mixed with the developer. The dry developer shows good fluidity and cleaning property, is excellent in environmental stability and durability, and can prevent the occurrence of the toner film phenomenon on a photoreceptor or carrier surfaces.

Abstract: A film magazine assembling system includes a plurality of two-part magazine casing assembling chucks. Each chuck is formed of a pair of chuck members the inner surfaces of which substantially form a cylindrical surface in a closed state. In an open state, one of the side edges of one of the chuck members parallel to the longitudinal axis of the cylindrical surface is spaced from the mating edge of the other chuck member. An indexing plate is rotatable about a substantially horizontal rotational axis and supports the magazine casing assembling chucks at regular angular intervals about the rotational axis so that the longitudinal axis of said cylindrical surface is held horizontal. The indexing plate is intermittently rotated by an angle equal to the angular interval, thereby successively stopping each magazine casing assembling chuck at a plurality of stations.

Abstract: A spool around which a roll film is to be wound is carried by a pallet having a spool holding shaft which holds the spool and rotates the spool under a force transmitted thereto from outside the pallet and a pair of film pinch arms which pinch the outer end portion of the roll film wound around the spool and is moved from station to station in a film cassette assembly line.

Abstract: A film magazine assembling system includes a plurality of two-part magazine casing assembling chucks. Each chuck is formed of a pair of chuck members the inner surfaces of which substantially form a cylindrical surface in a closed state. In an open state, one of the side edges of one of the chuck members parallel to the longitudinal axis of the cylindrical surface is spaced from the mating edge of the other chuck member. An indexing plate is rotatable about a substantially horizontal rotational axis and supports the magazine casing assembling chucks at regular angular intervals about the rotational axis so that the longitudinal axis of said cylindrical surface is held horizontal. The indexing plate is intermittently rotated by an angle equal to the angular interval, thereby successively stopping each magazine casing assembling chuck at a plurality of stations.

Abstract: A toner for development of a latent electrostatic image containing a colorant and a binder resin formed of a mixture of a low-molecular weight component and a high-molecular weight component. Both the low-molecular weight component and high-molecular weight component are made from a styrene-acrylic copolymer where the weight ratio (A) of styrene to acrylic monomer in the low-molecular weight polymer component and an the weight ratio (B) of styrene to acrylic monomer in the high-molecular weight polymer component satisfies the relationship A/B.ltoreq.1.3. The mixing ratio of the low-molecular weight and high-molecular weight components is within the range of from 80:20 to 40:60. The weight-average molecular weight (Mw) and the number-average molecular weight (Mn) of the low-molecular weight polymer component satisfies the relationship Mw/Mn.ltoreq.3.0.

Abstract: A spool around which a roll film is to be wound is carried by a pallet having a spool holding shaft which holds the spool and rotates the spool under a force transmitted thereto from outside the pallet and a pair of film pinch arms which pinch the outer end portion of the roll film wound around the spool and is moved from station to station in a film cassette assembly line.

Abstract: A developer carrier is disclosed, which has a core containing a binder resin and a magnetic powder, and a surface layer thereon containing a compound having a lower critical surface tension than the binder resin. This developer when used in a magnetic brush development process provides superior charge characteristics, resistance to environmental changes, and extended life. In another aspect, the invention relates to a developer carrier produced by a process of (a) melting a carrier composition containing a binder resin, a magnetic powder and a compound having a lower critical surface tension than the binder resin, (b) spraying the molten carrier composition to form droplets, and (c) cooling the droplets with a gas stream having a temperature lower than the melting point of the composition to form substantially spherical particles having a high surface smoothness.

Abstract: A spool around which a roll film is to be wound is carried by a pallet having a spool holding shaft which holds the spool and rotates the spool under a force transmitted thereto from outside the pallet and a pair of film pinch arms which pinch the outer end portion of the roll film wound around the spool and is moved from station to station in a film cassette assembly line.

Abstract: A process for producing a developer carrier is disclosed, which comprises heating a carrier composition containing a resin, magnetic particles and a compound having a lower critical surface energy than the resin, to produce a carrier particle having a higher surface concentration of the compound having a lower critical surface energy. A developer carrier having an average particle size of at least about 50 .mu.m and containing a fluorine-containing compound and fine magnetic particles dispersed in a binder resin is also disclosed. The developer carriers according to the invention when used in magnetic brush development provide superior charge generation, extended life and improved image reproduction.

Abstract: A toner composition for a two-component type developer capable of developing electrostatically charged images formed on a photoreceptor having a surface layer comprising organic substances, wherein the toner composition contains a fatty acid bisamide compound as an external additive.

Abstract: Control circuit for an answering machine having an electrical unit in parallel therewith including a controller for causing a first photocoupler to be conductive for a predetermined time period to discharge a capacitor when the machine goes into an on line state and, thereafter, causing the voltage across the telephone lines to charge the capacitor via a rectifier unit; a second photocoupler for detecting a voltage drop across the telephone lines caused by picking up said unit while the machine is in its on line state while using the voltage across the capacitor as a reference, whereby the controller returns the machine to its standby state after a predetermined time from the occurrance of the voltage drop.

Abstract: A carrier for developer is disclosed, which comprises a core having an average particle size of from 50 to 200 .mu.m and comprising fine magnetic particles dispersed in a binder resin and a polymer overcoat having a critical surface tension of from 10 to 25 dyn/cm formed on the surface of the core. The carrier has improved chargeability, high resistance to surface soiling, and high mechanical strength.

Abstract: A method and apparatus for loading film into film cartridges having an improved throughput rate. Caps, spools and shell plates are supplied simultaneously with the winding of film. Film is wound onto spools while the spools are held. Shell plates are held with a shell plate chuck in such a manner that the shell plate is half open. Spools on which film has been wound are inserted into corresponding half-open shell plates, after which the shell plates are shaped as required. Caps are then fitted onto both open ends of the shell plate.

Abstract: A method and apparatus for loading film into film cartridges having an improved throughput rate. Caps, spools and shell plates are supplied simultaneously with the winding of film. Film is wound onto spools while the spools are held. Shell plates are held with a shell plate chuck in such a manner that the shell plate is half open. Spools on which film has been wound are inserted into corresponding half-open shell plates, after which the shell plates are shaped as required. Caps are then fitted onto both open ends of the shell plate.