Abstract: In a recording sheet conveying device comprising: a dielectric sheet which moves at a predetermined speed while electrostatically retaining a recording sheet on the outer surface thereof; a charger positioned on the side of the inner surface of the dielectric sheet, to induce electrostatic attraction forces between the dielectric sheet and the recording sheet; and a deflector roll having an electrically conductive layer as an outer surface thereof, the deflector roll being confronted with the charger and adapted to push the recording sheet against the dielectric sheet, the number of electric charges provided by the charger is so adjusted that electrostatic attraction forces acting on the rear end portion of the recording sheet are weaker than those acting on the front end portion of the recording sheet, whereby the recording sheet is prevented from being wrinkled when electrostatically retained on the dielectric sheet.

Abstract: An image recording apparatus including a plurality of recording modules for substantially simultaneously recording on recording sheets images according to image data supplied thereto, an image data supplier for supplying images to the recording modules, a sheet supplier for supplying the recording sheets to the recording modules, and sheet distributors for distributing the recording sheets thus supplied successively by the sheet supplier to the recording modules.

Abstract: A color copying machine contains a scanning unit driven by a motor for applying a color scanning beam onto a manuscript, a photoconductive drum operable to rotate for being exposed to the scanning beam to form on a peripheral surface thereof a latent image of the manuscript. The color copying machine further contains a device for applying a toner to the latent image to form a toner image, and a transfer drum for holding a record sheet onto which the toner image on the photoconductive drum is transferred. A main controller calculates data representative of a speed of the motor in accordance with a magnification rate of the copy image to be formed on the record sheet to the image on the manuscript, and outputs a pulse signal whose pulse rate is proportional to the calculated speed data. The main controller outputs the pulse signal to a controller which drives the motor at a speed determined by the pulse rate of the pulse signal.

Abstract: A color copying machine includes scanning device for applying illumination onto a color original to effect a scanning operation. A color separator includes a plurality of optical filters of different colors, each of the filters allowing a predetermined light component of the illumination to pass therethrough during each scanning operation so as to apply it onto a photoconductive drum charged uniformly to form an electrostatic image thereon. Color toner is applied to each of the electrostatic images during the rotation of the photoconductive drum. The toner image on the photoconductive drum is transferred to a record sheet on a transfer drum. Two sensors are provided for sensing the initiation of each scanning operation and the position of the record sheet on the transfer drum. A control circuit detects, in response to the outputs of the two sensors, start and end timings of the transferring of each of the toner images onto the record sheet.