Abstract: A color space data conversion formula corresponding to the input and output conditions can be selected from basic profiles which consists of a plurality of the conversion formulas for color reproduction processes. A plurality of parameters or a plurality of variable conversion formulas can be selected from subprofiles, in accordance with the input and output conditions and on the ground of the color space data conversion formula selected from the basic profiles. Basic profiles or subprofiles can be added or modified. The color image data are processed highly accurately to obtain color images of high reproducibility, for thereby facilitating the setting of the input and output conditions.

Abstract: A developer treatment apparatus for treating excess developer remaining after film has been developed by developer containing a pigment dispersed in a solvent composed of a hydrocarbon as a main component includes a catalyst for oxidizing the hydrocarbon contained in the excess developer, thus treating the excess developer easily.

Abstract: A system for recording and reading an image information wherein an image containing a certain form and data is recorded on each frame of a microfilm and a desired datum is selected and read from the microfilm. The system comprises a printer for printing a form cord for discriminating the form style recorded on each frame of the microfilm, and a reader for reading the form cord and reading-out the corresponding form style from a form memory to determine the position of the desired datum so that the desired datum is extracted from the printed image. The form cord preferably includes information relating to the kind, fount, size and pitch of letters in addition to the information relating to the form style. The form cord may be printed on each frame of the microfilm preferably in the form of bar cord with or without data cords and check cords. Data cords may be attached to respective data or may be printed collectively at a certain location on each frame of the microfilm.

Abstract: A developing method for developing an image on an electrophotographic film by means of a processing head which has a developing section to which the film is pressed for the development under the supply of a developer. After completion of supply of the developer to the developing section, weak and strong blasts of air are successively applied and, when the film is moved apart from the developing section, a final strong blast of air is applied, so that surplus residual liquid developer is removed from the developing section without being dried and solidified in the developing section.

Abstract: A cleaning method for removing unnecessary matter accumulated on a surface on the bottom of a recess so as to clean the surface. An adhesive surface on a projection projected from an elongated base member is brought into contact with the unnecessary matter on the surface to be cleaned and is separated forcibly from the surface to be cleaned by application of tension to the elongated base member, whereby the unnecessary matter is lifted off the recessed surface to be cleaned. Disclosed also is a cleaning cassette for cleaning the bottom surface of a recess by removing unnecessary matter from the surface, having an elongated tape-like base member carrying a plurality of projections each having an adhesive end surface which is adapted to be pressed onto the unnecessary matter accumulated on the surface to be cleaned.

Abstract: A process head for an electrophotographic apparatus is adapted to charge an electrophotographic film, expose the thus charged film to image light so as to form an image on the film, develop the thus formed image by means of a liquid developer in a developing section, and dry the film then fix the thus developed image. The processing head is capable of supplying a rinsing liquid to the developing section after the completion of the developing. Therefore, any liquid developer adhering to the developing section can be removed.

Abstract: A film pressing device for use in an electrophotographic apparatus and adapted for pressing an electrophotographic film onto a processing head in the apparatus. The device includes a pressing plate for pressing the electrophotographic film onto the processing head and having a through-hole formed in the pressing plate for allowing a projecting light to pass therethrough. A light-shielding plate is provided on the pressing plate at one side of the through-hole so as to prevent any portion of the projecting light failing to pass through the through-hole from impinging upon portions of the electrophotographic film which are to be kept away from the projecting light. Thus, any portion of the light scattered from the light path between the projecting light source and the through-hole is prevented from reaching such portions of the electrophotographic film.

Abstract: In a projecting, recording and copying apparatus for use in an electrophotographic system, a movable mirror of a narrow width capable of traveling in the direction of its width and swiveling about its longitudinal axis is used so as to reflect a portion of the light rays shone by an image-forming optical system, thereby forming an image on the photosensitive material provided on the surface of a drum. The light rays passing by the movable mirror are focused on a screen. Since the movable mirror is moved in a swiveling manner, it is possible to project an image onto the screen and at the same time to form the same on the photosensitive material by means of a single mirror.

Abstract: A recording and projecting apparatus employing a film using a photosensitive material which is sensitized by heating and developed after exposure by reheating. Marks to be detected are provided on the film at predetermined regular spacings, and these marks are detected by a sensor, whereby an image at a specific position on the film is accurately disposed at a predetermined processing position, thereby reducing positional errors.

Abstract: A processing head for an electrophotographic apparatus has a developing section for developing an electrophotographic film with a liquid developer, and a drying section disposed adjacent to and on the downstream side of the developing section in the direction in which the film is advanced, to dry the film wetted with the developer by passing a gas in a direction that intersects the film advancing direction. The drying section is provided with a pair of frame members extending in a direction that intersects the film advancing direction so as to define both ends of the drying section in the film advancing direction. In addition, a pair of recesses are formed along opposing walls of the frame members, respectively. Accordingly, the flow rate of the gas passed through the recesses is higher than that of the gas passed along the other portion between the frame members.

Abstract: A document illuminating apparatus includes a reflecting plate which reflects the light from a rod-shaped illuminating lamp before it is incident on a document disposed on a document table. The reflecting area of the reflecting plate is varied in the longitudinal direction thereof in such a manner that the side of the reflecting plate on which the distance between the document and an optical path changing mirror is relatively great has a larger reflecting area than that of the side of the reflecting plate on which said distance is relatively short. Accordingly, the illuminance of the reflected light from the document which is incident on the optical path changing mirror is made uniform along the longitudinal axis of the illuminating lamp.

Abstract: In a process head for electrophotographic apparatus integrally formed with a charing/exposing chamber, a developing chamber, a drying chamber and a fixing chamber along the feeding direction of the film for recording and thereby made capable of processing plural frames of the recording film simultaneously, stage heads which constitute the respective processing chambers are fixed to a mounting member and a portion with charging mechanism is detachably inserted in the interval space between the stage head corresponding to the charging/exposing chamber and the mounting member so that its maintenance can be facilitated and the apparatus as a whole can be made compact in size.

Abstract: A rotatable head type electrophotographic apparatus comprises a rotatable head supported on a moveable table and having a corona charging electrode and a light source secured thereto to face outwardly of the circumferential surface thereof. A development processing unit is supported on the moveable table close to a photosensitive material supported on a platen having a curved supporting surface. The light source is driven in accordance with a predetermined modulating signal to form an electrostatic latent image in the photosensitive material when the rotatable head is rotated and moved above the photosensitive material. The latent image is immediately developed by processing liquid flowing in the development processing unit along the surface of the photosensitive material.

Abstract: A charging device for use in an electrophotographic apparatus is disclosed which charges, with improved efficiency and uniformity, a limited area of an electrophotosensitive member where a picture image is to be formed by corona discharge and which uniformly distributes electrostatic charges over the entire surface of the above area of the electrophotosensitive member. In the device, conductive members are disposed on both sides of a corona wire in the charging chamber to act as mating electrodes, and a mask in the form of a flexible film projects toward the opening of the chamber in such a manner as to make intimate contact with the electrophotosensitive member during charging.

Abstract: A charging and exposing head for use in an electrophotographic apparatus includes a charging and exposing chamber having a light transmission window for carrying out charging and exposing operation on an electrophotosensitive member moving along the light transmission window. In the charging and exposing head, a retaining member presses the electrophotosensitve member against the light transmission window to maintain the flatness of the electrophotosensitive member, and cooling air is supplied from a cooling gas supply pipe toward the electrophotosensitive member brought opposite to the light transmission window to prevent thermal deformation of the electrophotosensitive member.

Abstract: A method of drying electrophotosensitive film by bringing the film into intimate contact with a specific area of a develop-mask of a liquid developing station, blowing gas against the film while maintaining such contact and to such an extent that a film of liquid developer remains on the photosensitive film, and while in such condition moving the photosensitive film to a drying station having a drying opening of an area larger than that defined by the developing mask, thereby uniformly drying the specific area wetted by the liquid developer.

Abstract: In a developing head of an electrophotographic system which develops an image by bringing a liquid developer into contact with a photosensitive face of electrophotographic material, through an opening provided in the developing head, a right angle is formed between the photosensitive face and the in-flow and out-flow route for the liquid developer and a gas for removing excess developer at the opening. A pressure-reducing chamber is formed between a frame around the opening and a frame surrounding the pressure-reducing chamber, both frames tightly contacting the electrophotosensitive material. Thus, the gap between the photosensitive face and a developing electrode is reduced and high speed for the gas for removing the developer is obtained. Liquid developer exuding from the frame around the opening is captured in the pressure-reducing chamber.

Abstract: An electrophotographic device for a magnetic brush development process in which a conductive material is used for rollers in the conveying mechanism of electrophotosensitive materials which abut on the materials after a charging step by a charging device, but before a developing step by a developing device so as to insulate the rollers from other components. One portion of a shield case of the charging device is insulated from another portion and is electrically connected to the rollers, thereby applying a bias voltage on the rollers using the voltage induced on this portion due to high voltage applied on a corona wire of the charging device.

Abstract: A developing head in which liquid developer and gas are applied by a feeding system to the photosensitive surface of an electrophotographic material for electrophotographic apparatus via a developing chamber, a space being formed between the framed opening of the developing mask at its outer peripheral surface and an opposing photosensitive surface to prevent leakage of the liquid developer by capillarity between the photosensitive surface and the framed opening of the developing mask at its mouth abutting the photosensitive surface, a valve interposed between the passageways for feeding liquid developer and gas respectively in order to prevent the liquid developer from flowing into the passageway for supplying gas, and a pressure reduction apparatus to apply negative pressure between the photosensitive surface and the mouth of the framed opening when the electrophotographic material is advanced from one frame to another.

Abstract: An electrophotographic device having a process head wherein four stages of charging/exposing, developing, drying and fixing are continuously arranged at intervals corresponding to one frame of a film, and a process which requires a longer processing time is conducted simultaneously while other processes are being conducted, thereby completing a whole process in a shorter time by a continuous operation.