Abstract: A sheet feeding system for an image-forming machine includes a main body having a conveying passage therethrough for guiding sheet materials and a hand insertion feed table pivotally attached to the main body for movement between a feed position in which it can be used to feed sheet materials into the conveying passage and a storage position. The sheet feeding system also includes a separate feed unit which, when the table is in its storage position, can be aligned with the main body so that sheet materials can be fed therefrom into the conveying passage. The conveying passage guides sheet materials to either a receiving section, a sorter or back into the introduction opening of the conveying passage so as to form overlapping images.

Abstract: A toner for electrophotography, comprising an azoic pigment having a silica core as a coloring component, said azoic pigment comprising a core of a fine powder of silica and a coating of a mono- or polyazoic dye chemically bound to the surface of the silica core through an aminosilane coupling agent.

Abstract: A recording apparatus has a printer mechanism for printing images successively on sheets of copying paper, and an image control circuit for delivering image information controllably to the printer mechanism so as to enable the latter to print the images successively. The image control circuit includes a plurality of page memories each for storing image information per single page, a first changeover switch for writing image information selectively into the page memories, and a second changeover switch for reading image information selectively from the page memories. When a sheet of copying paper is jammed in the printer mechanism, a microcomputer system controls the second changeover switch to select a switching mode to read an item of image information out of one of the page memories which stores the item of information to be printed on the jammed sheet of copying paper, for thereby allowing the image to be printed in a shorter period of time after paper jam clearance.

Abstract: An azoic pigment having a silica core comprising a core of a fine powder of silica having a particle diameter of not more than 10 microns and a coating of a mono- or polyazoic dye chemically bound to the surface of the silica core through an aminosilane coupling agent.

Abstract: A display for a copying apparatus includes a display element for indicating the operating conditions of the copying apparatus. The display has a number of detectors for detecting each of a group of operating conditions and an energizer for energizing the display element in response to the outputs from the detectors. The display element operates with a predetermined on-period and a predetermined off-period for each corresponding detector. The display is capable of displaying a group of operating conditions by a single display element through a group of display conditions such as being on, being off and blinking.

Abstract: An apparatus for regulating the movement of a movable member includes a drive device for moving the movable member in a first direction from a rest position to an operative position and for moving the movable member in a second direction, opposite to the first direction, from the operative position toward the rest position. A first detector detects the presence of the movable member at the rest position. A second detector detects the presence of the movable member at a location adjacent the rest position but upstream thereof with respect to the second direction.

Abstract: An electrostatic recording apparatus for recording, developing and fixing an image on a sheet of recording paper includes an electrostatic recording head and a roller for forming an electrostatic image on the sheet of recording paper while the latter travels between the electrostatic recording head and the roller. The electrostatic recording head and the roller are relatively movable toward each other for pressing the sheet of recording paper against the electrostatic recording head during a period of time in which the sheet of recording paper travels between the electrostatic recording head and the roller to allow the electrostatic recording head to form the electrostatic image on the sheet of recording paper. The electrostatic recording head and the roller are relatively displaceable away from each other during a period of time other than the above period of time.

Abstract: An electrostatic copying apparatus includes a paper jam detector for producing a jamming signal in response to detection of a paper jam, an emergency stopping device for stopping the copying process in response to the paper jamming signal, and a manually operable release switch for actuation after the paper jam has been cleared to release the stopping action of the emergency stopping means. A preparatory driving device, responsive to the releasing of the stopping action of the emergency stopping device by the operation of the release switch, energizes the main motor of the copying apparatus to move the photosensitive member of the apparatus through at least one rotation. A cleaning device, also responsive to releasing of the stopping action of the emergency stopping device by the operation of the release switch, cleans the photosensitive member during that rotation to assure that the photosensitive member is clean after the jam is cleared and before the next copying cycle.

Abstract: An electrostatic recording apparatus for recording, developing and fixing an image on a sheet of recording paper, comprises an electrostatic recording head and a roller. Transport structure is located at the down stream side of the electrostatic recording head with respect to a direction of feed of the sheet of recording paper. A control rotates the roller when a leading edge of the sheet of recording paper is sandwiched between the electrostatic recording head and the roller and stops rotation of the roller during a period of time after the leading edge of the sheet of recording paper which has passed through the electrostatic recording head and the roller has started being transported by the transport structure and before the trailing edge has passed between the electrostatic recording head and the roller, the roller being rotatable in response to feeding of the sheet after the roller has ceased to be driven.

Abstract: A copying apparatus includes a sorter which is arranged to sort a plurality of copy paper sheets corresponding to a single original document, discharged from a main body of the copying apparatus, into a plurality of bins successively shifted to a paper discharge position by a shifting device. The copying apparatus includes a copy number preset key, a memory for memorizing a preset number of copies, a first counter for counting the number of copied paper sheets, a second counter for counting the number of discharged copy paper sheets, a device for stopping the copying operation when the counted value of the first counter agrees with the memorized preset number of copies, and a sort key for selecting a mode for sorting the copy paper sheets into the bins one sheet in each bin. An electrical circuit applies signals to the shifting device in order to change the moving direction of the bins when the counted value of the second counter agrees with the memorized preset number of copies in the sort mode.

Abstract: A copying apparatus capable of performing a first preset number of copying operations corresponding to a first original document in a successive copying operation mode, and performing a second preset number of copying operations corresponding to a second original document in an intruded copying operation mode includes preset number display elements for indicating a first and second preset numbers, first counter for counting a number of copying operations, a copy number display element for indicating a value counted by the first counting means, a second counter for counting a discharged copy paper after the completion of a copying operation, and a detector for detecting a jam of the copy paper. The counted value of the first counter is revised so as to be equal to the counted value of the second counter when a copy paper jam occurs.

Abstract: A cleaning device for use in an electrostatic copying machine removes with a blade any residual toner from a photosensitive body after a toner image has been transferred therefrom to a sheet of copying paper. A support shaft supports the blade for slidable contact with the photosensitive body and has a horizontal axis extending perpendicularly to a direction of travel of the photosensitive body. The support shaft is angularly movable about the axis and is axially movable. A rotational shaft is rotatable about an axis parallel to the support shaft. A first device converts rotational movement of the rotational shaft into reciprocal movement along the axis of the support shaft. A second device converts rotational movement of the rotational shaft into reciprocal angular movement of the support shaft. A third device releases interconnection between the rotational shaft and the first and second devices.

Abstract: A card-operated copying machine allows copying operation in response to insertion of one, at a time, of key checking cards for supervising copy counts for a plurality of sections. The card-operated copying machine includes (a) key checking cards assigned respectively to the sections, (b) a processor for issuing a signal capable of copying operation, the processor having a random-access memory for storing total copy counts respectively for the sections with flags indicative of permission and inhibition of copying operation, (c) a copy count display for reading the data stored in the random-access memory and displaying the total copy count for each section, and (d) an inhibition card recording thereon information for setting the flags to an inhibition state. The copying operation is permitted and inhibited in response to the flag conditions.

Abstract: Disclosed is a heat-sensitive recording material capable of forming an image of a hue close to a pure black at a low density, which comprises a dispersion of a leuco dye, a heat-fusible organic acidic substance solid at normal temperature and a sensitizing agent in a binder, wherein the leuco dye comprises a fluoran type leuco dye for forming a black color and a benzofluoran type leuco dye for forming a red dye in an amount of 0.01 to 1% by weight based on said black color-forming leuco dye.

Abstract: A one-component magnetic dry developer for use in development of positively charged images and transfer of developed images, comprises particles of a composition comprising a vinyl aromatic polymer, an aliphatic carboxylic acid having at least 14 carbon atoms, inclusive of the carbon atom of the carboxyl group, per carboxyl group or its metal salt and a finely divided magnetic material having a coercive force not larger than 120 Oe and a bulk density of at least 0.45 g/ml.This magnetic developer provides an excellent transferred image having high image density and image sharpness on a plain paper as a transfer sheet without fogging or broadening of the contour of the image.

Abstract: A copy paper feeding device for a copying apparatus includes a plurality of cassettes which are capable of storing copy paper sheets and a feeder which respectively corresponds to each of the cassettes. Each feeder is selectively driven so as to feed the copy paper sheets in the case where the cassettes store copy paper sheets having different sizes and each feeder is driven in a predetermined order so as to feed the copy paper sheets from one cassette until the cassette is empty and then successively feed the copy paper sheets from the remaining cassette in the case where the cassettes store copy paper sheets having the same size. The copy paper feeding device includes a selector for selecting which feeder is to be driven.

Abstract: A support mount for the rotary drum of an electrostatic copying apparatus. A pair of guide and support members is positioned within the copier housing, spaced from each other a predetermined distance in the direction of the central axis of the drum. Each guide and support member has a shaft support opening with a recess extending substantially perpendicular to the drum axis and a main guide surface extending from the lower end of the recess away from the shaft support opening and substantially perpendicular to the drum axis. When the peripheral surfaces of the drum bearing members are moved along the main guide surfaces, each bearing member passes through the respective recess and is positioned within the respective support opening. A pair of projecting pieces are positioned at the side plates of a frame of the copying apparatus developing device.

Abstract: An electrostatic copying apparatus wherein a stationary original document image is projected onto a photosensitive member during movement of an optical device for exposing, and an electrostatic latent image formed on the photosensitive member is transferred onto a copy sheet and is fixed, comprising (a) a jam detecting means for immediately detecting a copy sheet being jammed on a transport path; and (b) a cleaning device for removing residual toner particles remaining on the photosensitive member by means of magnetic force and for storing the removed toner particles after transferring operation. According to this invention, an occurrence of jam is detected immediately, and thus a fault or an accident of the electrostatic copying apparatus due to jam is prevented from expanding.

Abstract: A toner replenishing device for replenishing toner to a developing device in an electrostatic copying apparatus includes a storing box extending in approximately a horizontal direction, a supply roller provided at a supply port at an end of the storing box, pairs of wheels respectively provided at opposite ends of the storing box, a pair of endless stretched members passed around the wheels, a stirring and supply rod provided between the endless stretched members, and a device for driving the wheels so as to move the lower portion of the endless stretched members toward the supply roller.

Abstract: An electrostatic copying machine apparatus includes a developing device having a fixedly positioned permanent magnet and a hollow developing sleeve formed of a non-magnetic material mounted coaxially about the permanent magnet for rotation thereabout. Toner supplied to the periphery of the sleeve forms thereon a magnetic brush which is conveyed by rotation of the sleeve to a developing position whereat the toner is transferred to a photoreceptor as a visible toner image. A bristle cutting member is positioned upstream of the developing position to restrict the length of the magnetic brush. A blade member formed of a non-magnetizable material prevents solidification of the toner on the periphery of the sleeve and is positioned upstream of the bristle cutting member. The blade member slides in contact with the periphery of the sleeve at a scraping position. The permanent magnet has spaced therearound at equal circumferential intervals a plurality of magnetizing positions having magnetic poles.