Abstract: A plurality of index members are arranged at desired positions on an end portion of a platen glass, the members being movable in a scanning direction of a scanner. A black mark is provided on a rear surface of each index member, and the mark as well as the original are read by an image reader, so that the positions of the index members can be detected. When one of the index members is detected as the scanner is moved, the image signals of the original included in the scanning region of the scanner are not outputted until the next index member is detected. In this manner, by continuously outputting image signals only of the desired areas of the original, the column skip edition can be readily and surely carried out.

Abstract: A zoom lens system including, from an enlargement side, a first lens unit of a positive power, a second lens unit of a positive power and a third lens unit of a negative power. The first and third lens units monotonously move toward a reduction side during a zooming operation from the longest focal length condition to the shortest focal length condition, while the second lens unit which is closest to the third lens unit at the longest focal condition moves so as to be most proximate to the first lens unit at the shortest focal length condition. The zoom lens system fulfills the following conditions,3.ltoreq.f.sub.L /.vertline.f.sub.III .vertline..ltoreq.62.ltoreq.f.sub.L /f.sub.I .ltoreq.5wherein f.sub.L is the focal length of the zoom lens system at the longest focal length condition, f.sub.III is the focal length of the third lens unit, and f.sub.I is the focal length of the first lens unit.

Abstract: An image duplicating apparatus having an ordinary copy mode and multiple editing modes of copying operation is provided. Editing information can be inserted directly from a control panel having a display screen or from an external editor. In operation, the last mode of editing which is selected will predominate and will determine the particular editing of the information.

Abstract: A projection lens system having a first positive lens group which includes a positive lens having a strongly convex surface facing the enlarged side and a negative lens, a seond negative lens group which includes a positive lens and a lens in the form of a negative meniscus lens having a concave surface facing the enlarged side, a third lens group which includes a lens in the form of a meniscus lens, wherein at least one lens surface is aspherical, having a concave surface facing the enlarged side, and a diaphragm is arranged between the first positive lens group and the second negative lens group, and wherein said projection lens system is standardized by the conditional expression to form compactly.

Abstract: A facsimile apparatus comprising a document image reader for forming an image data corresponding to a document image; a data processor having multiple data processing modes for processing the image data with a mode selected; a memory having multiple memory areas, each of which stores information on a facsimile apparatus of an addressee, the above information comprising at least a line number and an addressee data processing mode; a data processor is controlled to process the image data with the data processing mode related with an addressee that has been selected; and a transmitter for transmitting the image data processed by the data processing means to the addressee selected.

Abstract: An image reading apparatus having a high-contrast mode of operation for reading character images and a halftone mode of operation for reading halftone images, including an image sensor converting optical image information into electric signals, an optical system for projecting an image on a document onto the image sensor, a threshold signal generator capable of generating a plurality of first threshold signals and operative to output one of the first threshold signals, a threshold signal generator capable of generating a plurality of second threshold signals and operative to output one of the second threshold signals, a mode selector circuit for selecting the high-contrast or halftone mode of operation, a density selector circuit for selecting the first threshold signal during the high-contrast mode of operation and the second threshold signal during the halftone mode of operation, and a combination of circuit networks for outputting halftone image signals during the high-contrast mode of operation on the bas

Abstract: A facsimile apparatus comprising a receiver for receiving a data transmitted through a line; image forming device for forming a toner image on a recording paper in accordance with the data; thermal fixing device for fixing the toner image on the recording paper by heating; detecting apparatus for detecting an operating condition of the receiver and outputting a signal in accordance with the receiving condition; and temperature controlling device for controlling an operating condition of the thermal fixing device based on the signal from the detecting apparatus.

Abstract: A copying apparatus reproducing images of originals in either of a single color and a plurality of colors, and being capable of adjusting the reproduction density of originals manually or automatically. This copying apparatus comprises a selector which selects one mode from a first reproduction mode wherein images of originals are reproduced in a single color and a second reproduction mode wherein images of originals are reproduction in a plurality of colors. Further, the copying apparatus according to the present invention can select an automatic adjusting mode wherein the reproduction density is automatically adjusted in response to the selection of said first reproduction mode, and a manual adjusting mode wherein the reproduction density is manually adjusted in response to the selection of said second reproduction mode.

Abstract: A film strip feeding apparatus for use with a film storage device detachably assembled into the apparatus and having an inner peripheral surface portion defining a circular central opening merging with a film outlet/inlet opening and having a roll of a film strip rotatably stored in the central opening, wherein a rockable member is provided which has carried thereon a stripping roller engageable with the roll of film in the film storage device and operative to unwind and strip a leading end portion of the film strip from the roll of film and feeding the leading end portion of the film strip out of the film storage device through the film outlet/inlet opening, the rockable member being rockable between a first angular position having the stripping roller disengaged from the roll of film and a second angular position having the stripping roller held in rollable engagement with the roll of film.

Abstract: A flash photographing system includes a camera body, a flash controller connected to the camera body and three flash devices: the first flash device is directly mounted on the camera body; the second flash device is mounted on the flash controller; and the third flash device is connected through a suitable cord to the flash controller. A microcomputer is provided in the camera body and also in each of the flash devices so as to control the three flash devices in various different modes of operations, such as simultaneous flash mode, sequence flash mode, and yet providing an appropriate amount of light for the proper exposure.

Abstract: Among four color developing units provided in a color image forming apparatus, a black developing unit which is arranged to be the last in order of development is disposed on either one of the farthest ends of a reciprocative movement holding member in the direction of its reciprocating movement, and the developing units arranged to be the first and the third in order of development are properly disposed on the second and the third stages of the reciprocative movement holding member. Each one of these developing units is freely moved to the developing location opposite to a photoconductor by reciprocating movement of the reciprocative movement holding member in accordance with a predetermined order of development.

Abstract: An image forming apparatus with a binding function wherein small bands of toner are deposited on paper sheets, a plurality of said sheets are then stacked and thereafter said small bands of deposited toner are fused, thereby binding said sheets.In order to form said small bands of toner on an electrostatic latent image carrier, the present invention is provided with a charger disposed between an exposure position and the developing position so as to be movable perpendicularly to the paper transport direction, an optical shutter disposed in the image exposure optical path and selectably operable, or a scale disposed at one side of a platen glass for preventing light from reaching the image carrier.Said small band of toner formed on the image carrier may be developed by a special toner such as waste toner removed from the surface of the image carrier after being supplied to copy the original document image, white toner, color toner, or highly self-adhesive toner.

Abstract: A cleaning device for wire electrode of corona discharger, for example, for use in electrophotographic image forming apparatus, which automatically cleans the wire electrode by relative movement of the wire electrode and cleaning member adapted to contact the wire electrode. Driving of a motor for the relative movement is temporarily stopped at a predetermined time or in response to occurrence of trouble of the relative movement, and started again, whereby the relative movement starts certainly.

Abstract: In an apparatus for developing an electrostatic latent image formed on an electrostatic latent image carrier using a monocomponent developer, a developing member, which makes contact with the electrostatic latent image carrier when the developing member has a coating of monocomponent developer maintained on the surface thereof, incorporates a dielectric material in which conductive particles are dispersed and has a volume resistivity that increases from the direction of the core to the surface.

Abstract: A photographic enlarger for carrying out a printing operation using exposure data fed directly from an external analyzer by converting the data into suitable exposure data for the enlarger. The enlarger can function efficiently even when a condition of the optical system of the enlarger, for example, the magnification or aperture size, of the optical system, is changed.

Abstract: A disconnecting mechanism or a driving force switching mechanism provided in a developing device functions so as to transmit a driving force from a driving source to a developer stirring mechanism only correlatively with a movement of each developing unit from a developer supply location adjacent to an image support member to a developer non-supply position away from the image support member. The disconnecting mechanism or the driving force switching mechanism functions so as to transmit a driving force from the driving source both to the developer stirring mechanism and a developing roll correlatively with the movement of each developing unit from the developer non-supply position to the developer supply location.

Abstract: A copying apparatus and method is disclosed. Provided as main parts are detection means for detecting the separation condition of the recording paper and control means for controlling at least one of charging means, separation means, and transport means in accordance with the detection result.

Abstract: In an image forming apparatus, a support member attachably and detachably supporting a plurality of developing units is provided for moving the developing units upwardly and downwardly or along a common circular orbit by vertical or rotative movement. A vertical movement support member balances with balancers, while a rotary support member has rotative balance by mutual position of each developing unit. A lock member for locking a support member at a desired position and a sensor for detecting the movement of the support member when unlocked are actuated for judging an unbalanced state of the support member by a detecting signal of the sensor.

Abstract: An interlocking mechanism for use in a developing device actuates a mechanism for regulating the condition of the developer on a developing roll correlatively with the movement of a developing unit from a developer supply location to a developer non-supply position and regulates to lower the height of the developer at the position where the developing roll faces the outside of the developing unit.The interlocking mechanism also stops the action of a structure which regulates the condition of developer correlatively with the movement of the developing unit from the developer non-supply position to the developer supply location.

Abstract: A method and apparatus for controlling an optical printer where respective light emitting elements are energized for light emission based on one line amount of received image data for a time equal to an ON time of a strobe signal thereby to form an image on a photosensitive member. The strobe signal is selected from a group consisting of a predetermined number of base signals each having a different ON time and one or a plurality of composite signals each composed of a different combination of the base signals. The one line amount of image data are outputted for a number of times equal to the number of base signals, within a time allotted for one line amount of exposure. The light emitting elements corresponding to the image data are energized for light emission for a time equal to the ON time of the selected strobe signal.