Abstract: A reader-printer with an image size judging function, which has a plurality of sensors for judging a size of a desired image retrieved out of a multiplicity of images recorded on a microfilm. These sensors are arranged along a film transport direction to allow them to have a predetermined detection area.

Abstract: An image projecting apparatus using a microfilm strip carrying a series of image frames which have a margin area between adjacent two thereof, comprising a viewing screen for displaying an image reproduced from the microfilm strip, reels and motors for driving the microfilm strip to travel along a predetermined path, an optical system for irradiating the microfilm strip with a beam of light, the beam of light being transmitted as an information-carrying beam of light carrying image information detected from the microfilm strip, a projection lens for magnifying the information-carrying light beam and projecting the magnified beam of light onto the viewing screen, a photoelectric margin sensor responsive to at least a portion of the information-carrying light beam for producing an electric signal variable with the quantity of light incident on the photoelectric margin sensor, the photoelectric margin sensor being located off the location at which the information-carrying light beam is to be focussed by the proj

Abstract: A negative-positive microfilm discriminating system for use in a microfilm reader/printer apparatus, comprising a reflector mirror for projecting a beam of light bearing an image detected from a microfilm strip, a sensor disposed in the path of light from the reflector mirror for detecting the densities in each of a plurality of blocks of a patterned image zone of the microfilm strip, and a control circuit for selecting out of the blocks the blocks having acceptable degrees of contrast, determining whether the image zone within each of the selected blocks is a negative or is a positive and determining whether the micrifilm strip is a negative or is a positive.

Abstract: A negative-positive microfilm discriminating system for use in a microfilm reader/printer apparatus, comprising a sensor for detecting the densities at a plurality of spots within an image zone of a microfilm strip, and a control circuit for discarding a fraction of the density data when the fraction of the data is representative of a density occurring at less than a predetermined percentage of the total number of spots and discriminating whether the microfilm strip is a negative or a positive on the basis of the remaining fraction of the density data.

Abstract: A camera comprising a document table for placing a document thereon, a photographing assembly for photographing the document on the table on a film on a reduced scale, and a marking assembly for photographing on the film a size mark corresponding to the size of the photographed image. When documents of different sizes are photographed on the same reduced scale by the photographing assembly, the corresponding size mark provided by the marking assembly is also photographed on the film in the vicinity of each film image. Such size marks recorded serve as image size data when the film images are thereafter copied by a reader-printer or printer on an enlarged scale, and are useful for automatically selecting copy paper of suitable size.

Abstract: A microfilm comprises a plurality of microimages continuously formed on a film base thereof, each of the microimages being provided with a size mark which has a distinctiveness for indicating the size of the corresponding microimage. A printer adapter for use with such a microfilm comprises a sensor for detecting the size marks. Correct size coping sheets are, therefore, supplied in accordance with the signal from the sensor.

Abstract: The present invention is directed to a reader printer which handles an image of a microfilm held by an aperture card and maintained in such a manner that the microfilm center aligns with the center of card aperture. At the time of printing, the image of the microfilm is projected by scanning from a scanning start position that is same irrespective of film sizes on a photosensitive member, and the image thereon is transferred to a paper sheet which is provided by cutting the web supplied from rolled paper. The supply of the web is controlled by a first timer which starts simultaneously with start of scanning and the cutting of the web is controlled by a second timer which starts simultaneously with expiration of the first timer.

Abstract: The disclosure relates to an improved reading and printing apparatus which includes a carrier for holding a film in a flat state, a first positioning device for positioning the carrier at a screen projecting position for projecting the image of the film onto an observation screen, a second positioning device for positioning the carrier at a scanning starting position for scanning and exposing the image of the film, and a scanning device for scanning the carrier from the scanning starting position. By the above arrangement, the functions as the reader and printer are incorporated into the apparatus of compact size through elimination of wasteful space and time involved in the scanning of the carrier.

Abstract: An aperture card reader is equipped with a unit detachably mountable on the main body for automatically feeding aperture cards. The aperture card can automatically be placed between presser plates while the unit is mounted on the main body or, alternatively, can be manually fed when the unit is detached from the main body. The aperture card is automatically fed between the presser plates with the card in a position in which the minor sides of the aperture card are oriented in the direction of feed, while the card can be manually placed between the presser plates by feeding the card in a position in which the major sides of the card are oriented in the direction of feed. The image of the microfilm mounted on the aperture card can be projected on a screen in a horizontal position when the card is fed automatically, or in a vertical position when the card is fed manually.

Abstract: A card dispensing mechanism for withdrawing individual cards from a stack thereof and feeding it to a use station including a stack support structure and a pressure plate urging the stack with the foremost card at a dispensing point. A carriage has a roller at a first end riding along a track longitudinally parallel to the foremost card front face and is engaged by a rocked lever at its opposite end and a pawl element is mounted proximate the carriage first end and projects toward engagement with the foremost card trailing edge to rotate and rock with the carriage. With the rocking of the lever on its advanced stroke the pawl element initially engages the card trailing edge to impart an advancing outwardly inclined force thereto and during the major advance of the card applies a longitudinal force thereto parallel to the card face and approaching the end of the stroke, the force is again outwardly inclined.

Abstract: In an electrophotographic copying apparatus of a type in which an electrostatic latent image of an original to be copied is formed, through suitable illumination means, on a dielectric surface of a transfer material or copy paper held under pressure between a photoreceptor plate and an electrically conductive pressure pad on a pressing plate during impression of a potential across the photoreceptor plate and the pressure pad, there are incorporated an improved pressing device for pressing the copy paper against the photoreceptor plate, and a fixing device having uniform heat radiation and operated through a special fixing temperature control circuit.