Did You Know...
...that a workman who left the soap mixing machine on too long was responsible for making Ivory Soap? He was so embarrassed by his mistake that he threw the mess in a stream. Imagine his dismay when the evidence of his error floated to the surface! Result: Ivory soap, the soap that floats.
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| Number | Title | Issue Date |
| 5200783 | Black image density correcting device An image density correcting device for a color copying machine capable of producing monochrome copies and full color copies, the device including a toner density detecting means for detecting the toner density of a toner image transferred on a transfer me... | 04/06/1993 |
| 5192972 | Developer mix monitoring for color developer stations A toner monitor in an electrostatographic machine is automatically calibrated when a toner monitor is periodically caused to read a simulated nominal toner concentration. Any difference between the monitor's output and that expected for the simulated nomi... | 03/09/1993 |
| 5150155 | Normalizing aim values and density patch readings for automatic set-up in electrostatographic machines Test patch densities are accurately determined during automatic set-up procedures, regardless of non-uniformities in the amount of wear and scumming from one part of the image receiver to another, or of variations in the coatings applied to the image rece... | 09/22/1992 |
| 5122842 | Color electrostatography process control by way of toner development characteristics Information regarding a toner development characteristic associated with a development station is used to automatically adjust process control parameters associated with the other development stations to achieve quality color productions. A color electros... | 06/16/1992 |
| 5121163 | Transfer type image forming apparatus with toner content detection An image forming apparatus includes a movable image bearing member; a device for forming an image on the image bearing member, the image forming device including a developing device for forming a toner image on the image bearing member; a transfer device ... | 06/09/1992 |
| 5103260 | Toner density control for electrophotographic print engine A method for measuring and adjusting the toner density of black toner in a multi-color copy machine includes first developing and transferring a layer of yellow toner (132) onto the surface of a transfer belt (18). A crosshatch pattern (134) of black tone... | 04/07/1992 |
| 5083160 | Image density control method and color image forming apparatus An image density control method and a color image forming apparatus for controlling the density of a multi-color image to be reproduced, having functions of forming for each color a first reference latent image, to be developed in a medium density, on a l... | 01/21/1992 |
| 5075725 | Automatic set-up for electrostatographic machines An automatic set-up procedure uses a special set-up target document on the platen to compensate for changes in toning by adjusting process control parameters for neutrality and density. The target document has a neutral density step tablet which is imaged... | 12/24/1991 |
| 5023662 | Image formation with manual and automatic exposure adjustment A copying apparatus reproducing images of originals in either of a single color and a plurality of colors, and being capable of adjusting the reproduction density of originals manually or automatically. This copying apparatus comprises a selector which se... | 06/11/1991 |
| 4990960 | Method and device for measuring densities of different toners constituting a mixture Disclosed are a method of and a device for measuring different kinds of photosensitive toners each being sensitive to light with a different range of wavelengths and contained in a photosensitive toner mixture which is used for forming a color image by a ... | 02/05/1991 |
| 4989049 | Multi-color image forming apparatus A multi-color image forming apparatus including an original platform, a photoreceptor, a scanning device, an image forming device for forming an electrostatic latent image on the photoreceptor, first and second developing device for developing the latent ... | 01/29/1991 |
| 4989043 | Color-balance control method In a multicolor image-forming apparatus having a photoelectric sensor for detecting the amount of toner of an unfixed toner image adhering onto a photosensitive element, and a toner density sensor for detecting the density of a developer in a developing m... | 01/29/1991 |
| 4959669 | Color correction device for a color image forming apparatus A color image processing apparatus including an image-reading device for reading a color image on an original to obtain first color image data, an image memory which stores the first color image data, and a factor memory which stores a predetermined corre... | 09/25/1990 |
| 4958190 | Image forming apparatus An image forming apparatus comprising a drum having a photoconductive surface, (b) latent image forming means for irradiating the photoconductive surface with information carrying light of a variable intensity for forming latent images on the photoconduct... | 09/18/1990 |
| 4952986 | Copying apparatus A copying apparatus having a prescanning function for obtaining density data to adjust copy parameters includes a correction function which eliminates the data obtained from a portion of a predetermined color, from the density data detected on a prescanni... | 08/28/1990 |
| 4949135 | Visual based process control apparatus which is based on a near uniform human visual response space While the human eye does not respond linearly to density and luminance changes, it does respond linearly to lightness L*. Equal increments on the L* scale do represent approximately equal steps in the perceived lightness of related colors. Near uniform co... | 08/14/1990 |
| 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 different colors for forming a color image are determined... | 07/24/1990 |
| 4935787 | Color copier operable both in monochromatic and full-color copying modes A color copier operable both in monochromatic and full-color copying modes is controlled by a central processing unit programmed to exercise a real-time control of operation by detecting image characteristics of an original to be copied if a monochromatic... | 06/19/1990 |
| 4933754 | Method and apparatus for producing modified photographic prints A system for adjusting the density or contrast of a photographic print includes a projection lens system (18) for projecting an image from a negative (10) onto photosensitive paper (20). A matrix array (24) of liquid crystal display elements is interposed... | 06/12/1990 |
| 4905038 | Exposure device An exposure device for use in an image recording apparatus for exposing a photosensitive recording medium to light so as to form a latent image thereon. The device comprises a sheet storage cartridge detachably provided to the image recording apparatus, t... | 02/27/1990 |
| 4894685 | Multicolor image forming method and apparatus A multicolor image forming method and apparatus wherein a reference toner image is formed on a non-transfer portion of an image retainer by a developing device, and image forming conditions are set in accordance with the reflective density of the referenc... | 01/16/1990 |
| 4888618 | Image forming apparatus having ambient condition detecting means An image forming apparatus includes a processor for processing image signals, an image forming system for forming images on recording mediums in accordance with the image signals processed by the processor, the image forming system being capable of formin... | 12/19/1989 |
| 4877698 | Electrophotographic process for generating two-color images using liquid developer A process for generating two-color images comprising: (1) charging an imaging member in an imaging apparatus; (2) creating on the member a latent image comprising areas of high, intermediate, and low potential; (3) providing an electrode having a potentia... | 10/31/1989 |
| 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 available process parameter adjustments based on several dens... | 08/01/1989 |
| 4806980 | Dynamic feedforward process control for electrographic machines The specification discloses apparatus by which multiple reproductions can be produced from an original, all reproductions from the same original being of substantially identical quality. An electrographic machine substantially uniformly charges an electro... | 02/21/1989 |
| 4800839 | Developing device for electrophotographic color copier A device applicable to an electrophotographic color copier or a color ink jet printer for selectively supplying visualizing liquids of different colors, e.g. black, red, green and blue or a mixture thereof to a photoconductive drum, paper or like recordin... | 01/31/1989 |
| 4780744 | System for quality monitoring and control in an electrophotographic process An electrophotographic color proof generating apparatus includes a charger station, an exposure station, a toning station, and a dryer station. A system electronically controls and monitors the quality of the proofs being generated by the electrophotograp... | 10/25/1988 |
| 4736223 | Color copying machine A color copying machine of the invention has a halogen lamp for emitting light to an original, a photosensitive drum on a surface of which is formed an electrostatic latent image by the light reflected from the original, a transfer section which color-sep... | 04/05/1988 |
| 4708459 | Electrophotographic color proofing apparatus and method Electrophotographic color proof generating apparatus includes a charger station, an exposure station, and a development station. Starting with color half-tone separations of artwork, the apparatus, using a unique method, electronically controls the exposu... | 11/24/1987 |
| 4697920 | Improved print quality monitoring for color electrophotography An improved full color electrophotographic print engine using flexible belts to carry a photosensitive electrostatic image developer and a transfer belt for building up composite developed images. Each belt, and an optical scanner, are driven by mechanica... | 10/06/1987 |
| 4518246 | Apparatus and method for forming multicolor electrophotographic images A plurality of constituent electrostatic color-separation images are produced in sequence for subsequent toner-development and superimposition and at least one developed constituent image is used to color-correct a succeeding constituent image which is no... | 05/21/1985 |
| 4106870 | Color electrophotographic method and apparatus Color electrophotographic method and apparatus capable of providing color representation faithful to an original by the provision of well designed color balance control devices. The method of the invention comprises a step of exposing a color resolving im... | 08/15/1978 |
