Abstract: A developing device accommodating a two-component developer of a carrier and a toner the mean particle diameter of which is 3.about.5 .mu.m. The developing device has a rotatable developing roller confronting the photoreceptor for supplying the developer to the electrostatic latent image on the photoreceptor at a developing region where the developing roller confronts the photoreceptor while holding the developer thereon and adjusting member for adjusting a developer packaged density (PD) in the developing region at 40.about.50. The developer packaged density (PD) is obtained via the following equation:PD=100M/(p.multidot.D.sub.s)wherein the following obtains:M: amount of developer on the developing roller per unit of surface area (g/cm.sup.2).rho.: carrier's true specific gravity (g/cm.sup.3)D.sub.s : spacing between developing roller and photoreceptor (cm). A method for developing an electrostatic latent image uses the developing device to provide a suitable developer packaged density (PD).

Abstract: Disclosed is a copying system wherein operation modes of a copying machine are set using an IC card located at a distance from the copying machine. The IC card has: a transmitter for transmitting a signal that contains an identification code for identifying the IC card itself, an identification code for identifying the copying machine, and prestored operation mode setting information for the copying machine; a receiver for receiving a signal transmitted from the copying machine; and a CPU for identifying the copying machine and its operating condition. The copying machine has: a transmitter for transmitting a signal that contains an identification code for identifying the copying machine itself, an identification code for identifying the IC card, and information concerning the operating condition of the copying machine itself; a receiver for receiving a signal transmitted from the IC card; and a CPU for identifying the originating IC card and for setting the copying machine operation mode.

Abstract: A photographed image reproduction apparatus for reproducing photographed images recorded on a film includes an image reproducer for reproducing an image on the film, a music player for playing a music suitable for the image, and controller for controlling the image reproducer and the music player so as to execute the image reproduction and the music play coincidentally. The controller has a calculator device for calculating an image reproduction time and a selector device for selecting a music suitable for a reproduced image among a repertoire of musics.

Abstract: A camera having automatic focus adjusting apparatus employing a continuous photographing mode comprises a focus detecting apparatus for detecting a focusing condition of a photographic lens to output an amount of defocus, and an apparatus for detecting an amount of movement of an object by detecting the amount of defocus of the same object at different times. Since the amount of movement of the object is detected, whether the object is moving or not can be easily determined.

Abstract: A camera includes a camera body, the camera body including a cartridge compartment, the cartridge compartment having a cover, the cover being movable between an open and a closed position. The camera includes a lock mechanism, the lock mechanism having a locking state in which the cover is prevented from being moved to the open position from the closed position, even if an operation to open the cover is executed, and an unlocking state in which the cover is movable from the closed position to the open position. The camera further includes a drive mechanism which drives a photographing lens, and an actuating mechanism, the actuating mechanism being movable between a first and a second position of the actuating mechanism by the drive mechanism. The actuating member switches the lock mechanism to the locking state when the drive mechanism moves the actuating mechanism to the first position of the actuating mechanism.

Abstract: An image reading apparatus in accordance with the present invention reads a color image to separate the image into three primary colors by an image sensor and outputs image data corresponding to each of the colors. This image reading apparatus comprises a scanning device for making the image sensor relatively scan for a reference chart and an original, an A/D converter for converting an output of the image sensor into digital data corresponding to each of the primary colors, an operation device for evaluating correction data of each color from the output of the image sensor generated when the image sensor scans the reference chart, a multiplier for multiplying the digital data of each color by the correction data evaluated, an adder for adding a result of the multiplication and digital data before being multiplied, a shading correction circuit provided at a succeeding stage of the adder, and a line memory provided at a succeeding stage of the shading correction circuit.

Abstract: In an image reader a frame image of a microfilm is projected on a line sensor with a projection lens and read. The projection lens is movable in the main scanning direction by a driving motor. The line sensor is movable in the subscanning direction by a driving motor. The line sensor is moved in the subscanning direction to apply preliminary scanning and detect positional deviation in the main scanning direction of the projected image, and the projection lens is moved in the main scanning direction corresponding to quantity of the positional deviation. When the frame image is inclined, it is rotated relatively to the main scanning direction by a prism to correct the inclination, and the projection lens is moved in the main scanning direction thereafter to correct positional deviation in the same direction.

Abstract: The image display apparatus includes an input image display control portion for displaying an input image on a screen of a display apparatus, a trimming area setting portion for setting or changing a trimming area with respect to the image, a frame display control portion for displaying a trimming frame indicating the trimming area over the image on the screen of the display apparatus, a confirmation input portion for outputting a signal for confirming the trimmed image which is the image in the trimming area, and a confirmation display control portion for displaying the trimmed image as a confirmation display on the screen of the display apparatus in response to a signal from the confirmation input portion. After the confirmation display is given, the image and the trimming frame are displayed on the screen of the display apparatus in response to a signal from a change input portion, and the change of the trimming area by the trimming area setting portion becomes possible.

Abstract: This invention relates to a two-component developer composed of at least a toner and a carrier, in which the toner contains a quaternary ammonium salt and/or a nitrogen-containing polymer and the carrier is coated with a polyolefinic resin layer.

Abstract: The present invention related to a toner for electrophotography comprising at least a binder resin, a coloring agent and a wax for off-set prevention, in which the wax is incompatible with the resin, dispersed insularly in the resin in the form of substantially spherical and/or substantially spindle-shaped particles, the number of spindle-shaped wax-particles occupying 70% or less of the total number of wax-particles. The spherical wax-particles have a following relationship between a mean wax-particle size (Dw) and a mean toner-particle size (Dt):0.05Dt.ltoreq.Dw.ltoreq.0.2Dtand the spindle-shaped wax-particles have a following relationship between a mean major axis (a), a mean minor axis (b) and a mean toner-particle size (Dt):0.025Dt.ltoreq.(ab.sup.2).sup.1/3 .ltoreq.0.1Dt.

Abstract: A control apparatus according to the present invention is a control apparatus collecting data about copying machines and communicating with a centralized control unit on the basis of the collected data, including a detection device for detecting trouble occurrence on the basis of the data from the copying machines, a counter for counting the number of times the trouble occurrence in response to an output of the detection device, a calculating device for calculating a trouble occurrence frequency on the basis of the number of times of trouble occurrence while the copying machine performs copying operation for a predetermined number of times, a determination device for determining that the trouble occurrence frequency calculated by the calculating device exceeds a predetermined value, and a communication device for calling the centralized control device in response to an output of the determining device.

Abstract: A compact zoom lens system comprises, from the object side, a first lens component of a positive refractive power, a second lens component of a positive refractive power, and a third lens component of a negative refractive power. The first lens component has at least one aspherical surface. There are variable air spaces between the first and second lens components and between the second and third lens components.

Abstract: In a digital image forming apparatus with use of electrophotographic process, an electrostatic latent image is formed by modulating the intensity of laser beam according to image data to expose a photoconductor in the raster scan to form an electrostatic latent image. A scan line is divided into groups of consecutive dots, and the exposure of the photoconductor with the beam is allowed only for a predetermined light-emitting time within the time needed to scan a predetermined period of consecutive dots in the scan line direction. Thus, the exposure is stopped periodically and the smoothness of a reproduced image is improved.

Abstract: A camera wherein the light emitted by a subject, which has passed through a photographic optical system, is formed as an image on an area sensor, and which includes an electronic viewfinder that indicates the image of the subject based on the output from the area sensor and an apparatus that detects image shaking caused by camera shake, based on the output from the area sensor.

Abstract: A light shutter array to be employed in an optical head for a color display, a color printer or the like. The light shutter array has at least three lines of shutter elements which are made of a material having an electrooptic effect. In tile lines, shutter elements which have conductor-filmed windows and shutter elements which have bare windows are staggered. The shutter elements with bare windows function as light shutters, and the shutter elements with conductor-filmed windows function as electrodes. The shutter elements with bare windows in each line are driven in accordance with red, green or blue image data.

Abstract: An image reading apparatus for reading a projected image by a line sensor formed in a linear shape. An image reading apparatus has an illumination system, an original supporting member, a projection lens and a line sensor formed in a linear shape. The illumination system includes a light guide formed of a cylindrically shaped light-transmitting material, a light source for introducing light into the light guide from the lengthwise direction of the light guide, a light-diffusing portion formed on the circumference of the light guide in the lengthwise direction of the light guide and a slit portion positioned opposite the light-diffusing portion.

Abstract: A camera comprises an angular velocity sensor for detecting camera-shake. The angular velocity sensor takes a certain time to be stabilized after its operation is started. When correction of camera-shake is required during the certain period, it is displayed that correction of camera-shake is not possible.As a result, a photographer using the camera with the camera-shake detection sensor refrains from photographing when correction of camera-shake is not possible.

Abstract: The present invention relates to plural color toners for use in image-forming method of forming images cyclically with the toners, developers comprising the toners and image-forming method by use of the toners or developers and image-forming system therefor, and is characterized in that use is made of toners which have their surfaces in a substantially identical state.

Abstract: The present invention provides a new distyryl compound represented by the following general formula [I] or [II]. ##STR1## The present invention provides a photosensitive member and an electroluminescence device both of which comprise the distyryl compound of the general formula [I] or [II] as a charge transporting material.

Abstract: An apparatus for delaying image data of a plurality of parallel bits representing tones includes a compressing part for decreasing the number of bits of image data to decrease the number of tones, a delay memory for delaying image data provided from the compressing part, an extending part for increasing the number of bits of the image data provided from the delay memory to the original number of bits, and a memory mounting amount detecting part for detecting the state of mounting in the delay memory and designating the number of bits to be delayed by the delay memory for the compressing part and the extending part according to the detected state of mounting.