Matches 1 - 50 out of 98 1 2 >
Match Document Document Title
7187884 Graphical representation of setting values of printing image and machine parameters for an electrophotographic printer or copier  
In a method or system for operation of at least one electrophotographic printing or copying system, at least one setting value of a parameter of a printing unit of the printing or copying system is...
6668142 Image forming apparatus with reference density changed according to low frequent and high frequent modes  
An image forming apparatus is able to maintain an image density at a constant level. The apparatus has a FC mode selecting key for allowing a user to selectively designate a low FC mode indicating...
6650849 Method of and apparatus for controlling image density of toner image based on high and low-density correlation data  
After forming solid patch images under various patch generating conditions (E, Vb), the optical densities of the respective patch images are measured by a patch sensor, and patch generating...
6559876 Image forming apparatus with exposure reduction mode  
An image forming apparatus includes an image bearing member for bearing a latent image and a charger for charging the image bearing member. The charged image bearing member is exposed to form the...
6377766 Electrophotographic apparatus having a printing density controller for dropout and non-dropout color  
By providing a printing density controller for changing a printing density in a range from a dropout color to non-dropout color, an electrophotographic printing apparatus can conduct the light and...
6112041 Image forming apparatus with density adjustment  
An image forming apparatus has an image forming device and a changing device, and the image forming device is capable of forming an image by the use of a recording device, and forming an image...
5999175 User interface for selecting scanner sensitivity  
An intuitive menu for visual displays is provided. Modern complex printed pages consist of several printed objects which may be overlaid upon each other. Examples are a main object such as text, a...
5974278 Image formation apparatus  
An image formation apparatus comprises an image bearing member, developing means for developing by use of toner the electrostatic image formed on the image bearing member, transfer charging means...
5799231 Variable index distributed mirror  
A variable index distributed mirror is disclosed used for high resolution reflective displays that are thin and have high resolution, reflectivity and contrast; wide viewing angle; low power...
5797066 Light source drive controlling device for use in image forming apparatus  
A light source drive controlling device for use in an image forming apparatus is provided for controlling a light source for illuminating a surface of a document wherein the light amount of the...
5754919 Electrostatic recording apparatus utilizing superimposition of colors in a toner image to record a multicolor image  
A multicolor electrostatic recording apparatus in which two or more different color toner image are superimposed by respective electrostatic recording units. Each of the electrostatic recording...
5745819 Reproduction machine having image deletions reducing control system and method  
An electrostatographic reproduction machine that includes an image bearing member means for forming a latent image having image areas and background areas; at least a development housing containing...
5745255 Electrophotographic digital printer having data expansion means responsive to desired image quality and type of recording medium used  
An expansion unit for expanding print data from an upper layer device into image data according to predetermined control data, a printing unit for printing the image data on a recording medium...
5722005 Image forming apparatus with control of charging, exposure and development according to image density steps  
An exposure step input circuit inputs a desired brightness of a printing image as one of a plurality of exposure steps and a lamp application voltage adjusting unit allows the application voltage...
5668635 Facsimile system operable in toner save mode, depending upon type of original image data  
A recording apparatus wherein an original image is recorded in a matrix of dots by applications of a toner tolocal spots on a recording medium, and which includes a non-toner-save controller for...
5655185 Image forming apparatus and method  
The present invention has an object to provide an image forming apparatus and method which enables an operator to easily adjust to the desired printing density. A paper feeding roller is driven in...
5392097 Image processing apparatus  
An image processing apparatus includes a sensor for sensing image density of an original, a determining unit for determining an image processing condition corresponding to image density sensed by...
5335047 Printing plate making apparatus for two different kinds of masters  
A printing-plate making apparatus is constructed such that a mode selecting switch adapted to change a master supplying process depending on properties of a master X is disposed on a housing 1 of...
5331379 Image forming apparatus capable of changing the surface potential of a photosensitive member  
An image forming apparatus is provided with a photosensitive member; a charger including a corona ion generator and a grid electrode provided between the photosensitive member and the corona ion...
5317373 Method and apparatus for user customized colorants in an electrophotographic printing machine  
An electrophotographic printing machine, of the type having a photoconductive surface on which a developed image is formed for producing a plural color image on a sheet substrate, includes...
5287149 Image forming apparatus having image transfer electrode contactable to transfer material  
An image forming apparatus includes an image bearing member for bearing a toner image, movable along an endless path; an original supporting platen for supporting an original: an illumination...
5249018 Electrophotographic image forming apparatus with user-adjustable forming condition default  
The image forming apparatus includes a unit for radiating light to an original with plural lighting conditions, a unit for changing the lighting condition according to a concentration of the...
5140363 Image projector  
An apparatus and method for detecting an image density of an original document is provided. The density of the image of an original document is determined during the changing of the zoom...
5111235 Method of operating electrophotographic printing apparatus  
A method of operating an electrographic printing apparatus which employs a reversal development system with a two components developer wherein the bias voltage and the surface voltage are varied in...
5055877 Copying apparatus with moveable screen and method  
A copying apparatus in which a screen for improving gradation characteristics of a copied image can be retractably projected into an optical path, including a device for setting, when the screen is...
5030994 Electrophotographic apparatus with multiple speed mode  
An electrophotographic copying apparatus having an electromechanical optical scanner, optical reflecting and focusing assembly, photosensitive latent electrostatic imaging assembly, electrostatic...
5021312 Apparatus and method for controlling the quantity of developer delivered to a film processing head  
A charged film is exposed to light from an image to record the image as a electrostatic latent image on the film. A developer is then fed to the film so that the film is developed. The feed...
5019873 Color tone adjustable image recording apparatus  
A color image recording apparatus for recording a color image using a photosensitive recording medium, wherein the photosensitive recording medium is exposed to at least two light components...
5010372 Black-and-white and color copier operable at different processing speeds  
In a copying machine for both black-and-white and color, a latent image of an original is formed in a photosensitive device by scanning the original by a scanning optical system and is developed by...
4990953 Copying apparatus  
A copying apparatus in which a light receiving sheet is used is provided with a density level setting switch for setting the density level of a copy image, and an illuminance controller for...
4967211 Printing machine with toner density balance in solid areas and line strokes  
A printing machine with control device for identifying solid areas to be imaged. The printing machine is regulated on a picture element (pel) basis to produce pels representing the interior of...
4959687 Bias power source controller for an image forming apparatus  
A controller for controlling a bias power source associated with, for example, a developing unit of an electrophotographic copier such that a bias voltage to be applied to the developing unit for...
4943834 Image forming apparatus capable of detecting, analyzing and displaying an originals spectroscopic color data  
A color copier includes an optical sensor unit and analyzes colors of reflected light from an original to be copied by detecting spectroscopic color data of the reflected light. Amounts of toner of...
4912513 Developing apparatus with variable developing bias voltage  
A copying apparatus in which a developing bias voltage to be applied to a developing sleeve by a power source is changed to adjust the density of a reproduced image, while the electric potential...
4853738 Color quality improvements for electrophotographic copiers and printers  
Disclosed is apparatus and procedure for automatic set up and/or maintenance of process control parameters for good color balance, color fidelity, and tone reproduction by exploiting all of the...
4785330 Multiple image forming system  
A multiple image forming system for synthesizing images having different kinds of gradation characteristics of an original comprises: a latent image forming circuit for projecting a reflected light...
4772919 Electrophotographic copying machine  
An electrophotographic copying machine adapted to provide a copied image for preparing a master plate for a thermal type stencil printing machine as well as a copied image for other, ordinary use....
4745489 Image recording apparatus for recording only the image area of a film  
An image recording apparatus includes a lamp, a CCD array, an image density adjustor, first and second shutter drivers, first and second shutters, an image area discriminating circuit, and a...
4740814 Preview system for an electrophotographic printing machine  
An electrophotographic printing machine in which an edited copy of an original document is formed. A video image of the original document is displayed and the machine operator adjusts the image as...
4737821 Colored image recording device  
In an image recording device, particularly suitable for the reproduction of colored images, two images are superimposed on a recording sheet. The second image is so designed that it compensates the...
RE32611 Adjusting copier copy contrast and density during production runs  
Apparatus including a recirculating feeder and document positioner is coupled to a copier. The copier has variable contrast and density controls. Ordinarily, the document positioner directly feeds...
4714945 Light exposure controller  
A light exposure controller is provided for detecting a light amount reflected by an original document in a copying machine and controlling the light volume of a copy lamp illuminating the original...
4699502 Copying machine exposure adjustment device  
A copying machine exposure adjustment device, including an operation panel that converts user operations into digital signals, a digital operation circuit that processes operational data from the...
4688923 Developing apparatus  
A developing apparatus including an electrostatic latent image holder, a developer carrier for carrying a developer and provided opposite to the electrostatic latent image holder and separated...
4653904 Exposure intensity detecting system for copying machine  
Disclosed herein is an exposure intensity detecting system suitable for use in a copying machine. The detecting system is characterized in that a light-shielding plate is arranged underneath a...
4652111 Electrostatic recording apparatus  
An electrostatic recording apparatus comprises a photosensitive body whereon an electrostatic latent image is formed and the electrostatic latent image is toner-developed by a developing apparatus....
4640603 Copying apparatus  
A copying apparatus capable of automatically adjusting the image density by reading the average density of the original document and still allowing fine adjustment by the operator for covering...
4632054 Development system  
An apparatus which develops a latent image by transporting marking particles into contact therewith at least two successive times. An operator adjustable voltage source is coupled to the marking...
4630918 Image compensating method in a copying machine  
Image intensity adjustment in a copying machine is performed by simultaneously adjusting both a bias voltage to be applied to a developer unit of the copying machine and the intensity of light to...
4627713 Copying machine  
A copying machine includes a reading device for optically scanning a document and reading image data of the document, a copying device for forming a copy of the document in accordance with the...
Matches 1 - 50 out of 98 1 2 >