Abstract: A centralized control system capable of remote controlling terminal devices such as a copying machine or automatic vending machine by using communication lines. The system displays information identifying the terminal devices which have not transmitted the information to a central unit after predetermined time. Further, the system is provided with a back-up power source for backing up a memory storing the information to be transmitted and an IC for clocking the present time. The information stored in the memory is to be transmitted when the power is supplied again in the case where the transmission has not been carried out at the predetermined time because the power source for the terminal device was shut off. Moreover, the system judges, in the case where an image forming apparatus is adapted as a terminal device, whether the image forming apparatus has recovered from trouble condition to normal condition by judging whether a copy paper is actually discharged.

Abstract: A printer of bit map type provides a first information processor for analyzing data received from an external data processor to transform them into intermediate codes and a second information processor for imaging bit images on a bit map memory according to intermediate codes. The first and second information processors are interconnected by a memory means so as to be able to work asynchronously with each other.

Abstract: A high-zoom-ratio real-image finder is provided with an objective lens system including a first lens unit having a positive power, a second lens unit having a negative power, a third lens unit having a negative power and a fourth lens unit having a positive power. Zooming is performed by moving the second and third lens units always in the same direction. A luminous flux restricting member is integrated with a holder for the second lens unit. A zoom strobe unit moves integrally with a holder for the third lens unit.

Abstract: In a camera having a function or recording a scope of printing (printing scope) in an exposed picture of a film, under a panoramic photography mode, that is, a mode in which the ratio of the horizontal dimension to the vertical dimension of a printing scope is larger than that of a standard picture from a film, an aperture is controlled to be smaller than in standard photography.

Abstract: In a process for image formation, an electrostatic latent image is formed on a photosensitive member having an amorphous carbon layer as an outermost surface layer. The electrostatic latent image is developed with toner to form a toner image. The toner image is transferred to transfer paper of which pH-value according to JIS-P-8133 is in a range from 7.0 to 8.5.

Abstract: A radial gradient index lens system has a refractive index distribution. The refractive index decreases from an optical axis along a height. The lens system has two meniscus lens elements whose convex surfaces have a larger radius of curvature than concave surfaces. The meniscus lens elements are arranged symmetrically with respect to an aperture stop so that the convex surfaces thereof face an object side and an image side, respectively. The gradient index lens system is for use in a copying apparatus or as a reading optical system.

Abstract: A print head for reproducing a multi-level image is an provided. In the print head, a light-emitting array comprises a linear line of light-emitting elements. A D/A converter converts a multi-level image data to an analog signal, and an analog shift register shifts and latches the analog signals of a line received from the D/A converter. An analog latch register latches the analog signals held by the analog shift register. A driver controls the quantity of light of the light-emitting elements according to the analog signals latched by the analog latch register. In one embodiment, the print head includes a second analog shift register, an A/D converter a line memory and a divider which divides the image data by a signal from the line memory to produce corrected data which is provided to the driver to control driving of the light-emitting elements.

Abstract: A photographic camera includes a camera body, a cartridge holder, and a shift device. The cartridge holder is capable of holding a film cartridge to be used in the photographic camera, and movable between a first position in which the film cartridge can be removed from the camera and a second position in which the film cartridge can be used in the photographic camera. The second position is aligned to the first position. The shift device shifts the cartridge holder between the first and second positions. The camera also can include a flash device, having a flashlight emitting portion, for illuminating an object to be photographed by a flash light. The camera further can include a device for determining a position of the film cartridge with respect to the camera body the cartridge holder is located at the second position.

Abstract: In an electrophotographic image forming apparatus including a photoconductive drum, the photoconductive drum is electrically charged by a corona charger, and light corresponding to an image is projected onto the photoconductive drum by an exposure optical system, thereby forming an electrostatic latent image thereon. Thereafter, the formed electrostatic latent image is developed with toner by a developing unit to form a toner image thereon, and then the toner image is transferred onto a sheet of paper. There is further provided a voltage sensor for detecting a surface voltage at at least one position of the photoconductive drum. An operation value of at least one of the corona charger, the exposure optical system and the developing unit is adjusted by an adjustment controller based on the surface voltage detected by the voltage sensor at a timing between respective image forming processes when an image forming process is continuously repeated a plurality of times.

Abstract: An electronic mail system in which a mail management method is improved in order to reduce the complexity and labour of handling transmitted information so that its convenience is increased. In an electronic mail system in which a plurality of data processing systems exchange messages through mailboxes MB utilizing the stored and forward system, the data processing system which receives a mail M transferred from the mailbox MB is provided with an electronic mail terminal utility. When the data processing system receives the mail M, the electronic mail terminal utility classifies a data file written in the mail M according to specific data contained in the mail M and stores the data file in an appropriate folder based on a result of the classification.

Abstract: An auto focus camera includes a focus detecting circuit, a lens driving circuit for driving a taking lens to an in-focus position based on a focus detection result, a starting signal outputting circuit for outputting a starting signal which starts a focusing operation, an operating member to be operated by a user after the starting signal is outputted, and a controlling circuit for controlling the lens driving circuit so as to drive the taking lens in manners different between before and after an operation of the operation member.

Abstract: The present invention provides a cleaning solution for recycling a waste copy paper with toner-images formed on the surface of the copy paper, comprising water, a monoester of bivalent organic acid, a surface active agent and an organic acid.

Abstract: In a shadow process mode, a scanner reads out an original with a first exposure lamp in a first scanning operation. The readout image data is stored in an image memory via an I/O control unit. In the second scanning operation, the scanner reads out the original with a second exposure lamp having an illumination direction different from that of the first exposure lamp. The image data read out in the second scanning operation and the data stored in the image memory are subtracted for each pixel by a subtractor. The difference thereof is compared with a predetermined value in a comparator. The compared result is output to a selector, whereby a desired image data is provided to a printer processing unit via the I/O control unit.

Abstract: An image density control apparatus which includes a photoreceptor having a photosensitive surface to be uniformly charged to a reference potential and formed with a charge latent image by a reference light amount, a device for developing the charge latent image at a reference developing potential so as to obtain a test pattern, a device for detecting density of the test pattern so as to control image forming condition during an actual image formation according to the detected value. The image density control apparatus further includes a reference condition control device which sets the reference image forming condition for forming the test pattern in accordance with the image forming condition for forming a document which was previously set by detecting a representative density of the document.

Abstract: An image reproducing apparatus is adapted for reproducing a photographed image recorded on a film, the film having photographic information about the photographed image. The apparatus includes a reproducer for reproducing the photographed image recorded on the film, a reader for reading the photographic information from the film, a corrector for correcting the quality of the photographed image, a setter for setting a correction for the corrector based on the photographic information, and a controller for controlling the corrector to reproduce the photographed image in accordance with the set correction.

Abstract: A camera system has a camera section, a reproduction section and a printer section, the printer section being separably attachable to either the camera section or the reproduction section to form an integral body. The camera system has photoelectric conversion elements and picks up an image of an object to produce image data. The reproduction section processes the image data so as to reproduce the picked-up image on a display screen, and the printer section prints the picked-up image on printing paper based on the image data. The reproduction section may include an output device which transmits the processed image data to a television set having a display screen, and it may also be integrally provided with a monitor having a display screen. The camera system further includes a recording portion electrically connected with the camera section and which records the image data.

Abstract: The present invention relates to an image processing apparatus for carrying out a variable scale magnification processing for contracting or enlarging an original image. The image processing apparatus including a variable scale moving unit for increasing pixels in accordance with a variable scale magnification in order to enlarge the original image includes a smoothing processing unit for smoothing pixel data. The smoothing processing unit detects the number of increased pixels for each pixel by an increased pixel number determining unit, so as to smooth image data output from the variable scale magnification moving unit by employing smoothing filters of a matrix size selected in accordance with the result of the detection. This results in an image processing apparatus that can prevent a degradation in image quality by an appropriate smoothing processing independently of whether a variable scale magnification in enlargement is integer or not.

Abstract: Image data input from a host computer is converted into data BDATA corresponding to a beam diameter at an image control circuit. BDATA is input into a voice coil 21 driving a collimator lens through a collimator lens driving circuit 3, and the diameter of a laser beam is thus determined. Meanwhile, BDATA is input to a laser beam driving circuit 2 together with a signal LDATA controlling light emission from a laser diode. The laser diode is driven at an intensity corresponding to the beam diameter based on BDATA and LDATA at laser driving circuit 2. An optical apparatus capable of reproducing an accurate dot diameter according to a beam diameter is provided as a result.

Abstract: A program replacement device is incorporated in a computer system having a CPU and a program memory in which first programs to be executed by the CPU are stored. The program replacement device includes a RAM employed as the program memory and having a write enable terminal, and a protection circuit interposed between the write enable terminal of the program memory and a write signal outputted from the CPU. The protection circuit includes a push switch for instructing program replacement with respect to the program memory, a pulse generating circuit for generating a pulse signal having a given time interval in response to an instruction from the push switch, and a gate circuit for making, only when the pulse signal is generated, the write signal outputted from the CPU valid with respect to the write enable terminal of the program memory.

Abstract: A photo signal processing apparatus which comprises a light receiving unit of charge accumulation type for outputting a data corresponding to a condition of light received thereby, a data processor for applying a predetermined processing to the data outputted from the light receiving unit, an accumulation initiating device for causing the light receiving unit to initiate a charge accumulating operation, an accumulation interrupting device for interrupting the charge accumulating operation of the light receiving unit, a counter for counting a time passed during a period subsequent to the start of the charge accumulating operation of the light receiving unit and until the termination of the charge accumulating operation of the light receiving unit, and a control unit for activating the accumulation initiating device at a timing required to interrupt the charge accumulating operation of the light receiving unit at the time of termination of the data processing performed by the data processor.