Abstract: An apparatus for reducing an image forming time period includes a rotatable image bearing member, a charging device for charging the image bearing member, an image forming device for forming an image on the image bearing member which was charged by the charging device, a transfer material bearing member for holding a transfer material and for conveying the transfer material to a transfer station regarding the image bearing member, a transfer device for electrostatically transferring the image formed on the image bearing member onto the transfer material held by the transfer material bearing member at the transfer station, and a restraint device which prevents the charge on the transfer material bearing member from being transmitted when an area on an image bearing member which is to be compacted with the transfer material held on the transfer material bearing member during image transferring is situated at the transfer station before an operation of the transfer device is started.

Abstract: An image forming system includes a generator for generating an image signal representing a predetermined test image having a plurality of tone levels, an image forming device for forming the predetermined test image on a recording medium based on the signal, a first measuring device for measuring density levels of the formed predetermined test image, corresponding to each of the plurality of tone levels of the image signal, a controller for determining characteristics of a change of density levels in the predetermined test image to a change of tone levels in the image signal based on a plurality of density levels measured by the first measuring device, and for making a conversion data table for converting tone levels of an input image signal in accordance with the characteristics, a designator for generating instructions for designation a correction of the conversion data table, a transferring device for transferring the image formed on the recording medium to a recording sheet, a second measuring device for

Abstract: An image forming apparatus includes an input unit for inputting image data representing an image, a synthesizing unit for synthesizing a predetermined information with the image represented by the image data, a forming unit for forming an image in accordance with the image data, a detecting unit for detecting a condition relating to an image forming by the forming unit, and a controlling unit for controlling the synthesis by the synthesizing unit based on the detection result of the detecting unit. An image forming method is also disclosed.

Abstract: This invention relates an image forming apparatus capable of automatically adjusting image formation conditions. A transfer medium having a detecting pattern image formed by an apparatus main body is read by an original reading unit. A look-up table for setting latent image formation conditions is corrected on the basis of a read output, thereby correcting image densities in a main-scan direction and/or a sub-scan direction.

Abstract: An image forming apparatus is provided with an image carrier which rotates while carrying an electrostatic latent image, developer for developing the electrostatic latent image on the image carrier, transfer drum for transferring the developed image on the image carrier onto a recording medium in a transfer unit, a first storage unit for storing a recording medium to be fed to the transfer unit, and a second storage unit for storing a recording medium to be fed to the transfer unit, the second storage unit having a short feed time to the transfer unit. An electrostatic latent image forming condition is changed in correspondence with the number of revolutions of the image carrier, and a change in electrostatic latent image forming condition is controlled in correspondence with the storage unit which stores the recording medium to be fed.

Abstract: This invention intends to reduce, in the formation of a color image in consideration of the reproducible color region in the image formation, the time required from the start of image formation to the formation of a reproduced full-color image. This is achieved by judging, by a selection circuit 14, whether the color space of the full-color original is within the color reproduction region of the printer, and setting an image processing condition by the selection circuit 14, according to the result of the judgment, after the image formation of a first color but prior to the image formation of a second color.

Abstract: A color image forming apparatus for automatically setting an image forming condition includes an electrophotographic photosensitive member movable along an endless path; an electrostatic latent image forming device for forming electrostatic latent images for different colors on the photosensitive member; a plurality of developing device containing different color toners, operable corresponding to the electrostatic latent image; a transfer device for overlaying developed images sequentially onto a transfer material; a monitor image forming device for forming a monitor image; a control device for controlling the image forming condition on the basis of the monitor image; wherein detection of the monitor images for the respective developing device is completed with one-half the time required for the photosensitive member to rotate for image formation by all of the developing device.

Abstract: The present invention provides an electrophotographing apparatus for forming a color image of an improved image quality. For the provision of such an apparatus, a plurality of color developing means are arranged in the traveling direction of the electrophotographing member. The length of the traveling direction of the photosensitive member becomes longer, and the dark attenuation characteristics are created. The resultant problems which tend to lower the image quality are solved.In consideration of the dark attenuation characteristics of an electrophotographing photosensitive member, the present invention performs fine color adjustments according to each color of an developing image. In this adjustment, the gradation is corrected, or the color is corrected, per color in accordance with the dark attenuation characteristic.

Abstract: There is provided an image forming method an apparatus and includes a first toner image formation step for forming a first color toner image of magnetic toner; a first image transfer step for transferring the first color toner image onto a transfer material; a second toner image of a non-magnetic toner formation step for forming a second color toner image; a second image transfer step for transferring the second color toner image on the first color toner image on the same transfer material; an image fixing step for simultaneously heating and fixing the first color toner image and the second color toner image on the transfer material; wherein a glossiness of the magnetic toner for the first color toner image is lower than that of the non-magnetic toner for the second color toner image.