摘要:
A system and method for color mixing management in an electrostatographic printing system, wherein a developing material reservoir containing an operative solution of colored developing material including a mixture of selected color components is continuously replenished with selected differently colored developing material concentrates in a predetermined ratio so as to be capable of producing a customer selectable color image area on an output substrate. The present invention may also be utilized to mix a customer selectable color in situ, either from stored proportions known to compensate for developability differences or from approximate amounts of primary color components initially deposited and mixed in the developing material reservoir with the resultant operative developing material mixture continually developed and replenished with a predetermined ratio of color components until the developing material mixture reaches a steady state color.
摘要:
An image data adjustment system is described which adjusts image data to be printed based upon the level of contaminants detected in the toner reservoirs. The system detects the level of contamination of a toner to be printed and adjusts the image data so that a compensating toner is also printed with the desired toner so that an intended print color is achieved despite contaminants in the toner.
摘要:
A liquid developing material replenishment system wherein an apparatus for developing an electrostatic latent image with a liquid developing material includes a liquid developing reservoir for providing a supply of operative liquid developing material to the developing apparatus, and a liquid developing material supply is coupled to the liquid developing material reservoir for providing a supply of liquid developing concentrate to the liquid developing material reservoir for replenishing the supply of operative liquid developing material in the liquid developing reservoir. A predetermined amount of operative liquid developing material is periodically and/or systematically discharged from the liquid developing material reservoir to remove contaminated liquid developing material from the reservoir. In addition, a predetermined amount of liquid developing material concentrate is systematically dispensed from the liquid developing material supply to the liquid developing material reservoir so as to extend the useful life of the operative liquid developing material therein.
摘要:
Computer controller mixing of customer-selected colorants, including inks, for printing machines includes an ink supply station with a color matching control computer program, an ink mixing station, cleaning and waste disposal stations, for automatically emptying and cleaning ink mixing station components, which are integrally connected to a print engine, and scheduling of colorant changes to maximize use of a particular colorant and minimize colorant changes.
摘要:
Custom color control techniques are extended by using a high and a low pigment loaded toner for each color of the primary colors in the printing system. In one application, a large gamut of colors and fine control of color is accomplished by using a minimum number of colored pigments with each color incorporated into both high and low pigment loaded toners. Another application of the high/low pigment loaded toners is the ability to increase the developed mass per unit area (DMA) for rough papers without increasing pigment mass per unit area (PMA) by either mixing high and low pigment-loaded toners or by mixing a high pigment-loaded toner with an unpigmented toner to obtain the desired custom color. A novel sensor which senses fluorescent molecules in toner particles provides a color independent measure of total toner solids.
摘要:
A liquid electrophotographic reproduction machine including an image bearing member movable along a process path; latent image means mounted along the process path for forming a latent image electrostatically on the image bearing member; a development unit mounted along the process path and containing liquid developer material including a liquid carrier and dispersed charged toner particles for developing the latent image to form a toner image; a pre-transfer station for increasing adhesiveness of the toner image, the pre-transfer station includes an applicator member which applies a cohesion increasing (Cl) solution on the toner image; and a transfer station for transferring the toner image onto a receiving substrate.
摘要:
A negatively charged liquid developer comprised of a nonpolar liquid, a mixture of a first and a second thermoplastic resin with dissimilar melt indexes, a pigment, charge director, optional charge adjuvent, a charge control agent comprised of a component of the alternative formulas ##STR1## wherein R.sub.1 is selected from the group consisting of hydrogen and alkyl, and n is 0 (zero), 1, 2, 3, or 4, and wherein the melt index of the first resin is from about 50 to about 800 grams, and the melt index of the second resin from about 850 to about 2,500 grams.
摘要:
An apparatus for developing an electrostatic latent image in a liquid developing material-based electrostatographic printing machine including a control system for controlling an amount of marking particles, carrier liquid and/or charge director added to a supply of liquid developing material utilized for developing a latent electrostatic image such that the concentration of marking particles and or charge director can be maintained at an optimal value. The amount of marking particles, carrier liquid and/or charge director in a supply of liquid developing material is maintained at a predetermined optimal value in response to the amount of marking particles and/or charge director depleted from the supply of liquid developing material with each development cycle. A supply reservoir is maintained with a substantially constant amount of liquid carrier to which is added marking particles and/or charge director to provide an operative solution of liquid developing material. For each development cycle, the amount of marking particles and/or charge director depleted from the supply of liquid developing material is determined as a function of the number of picture elements or pixels making up the image being developed. Marking particles and/or charge director concentrate are added to the supply reservoir to maintain the amount of marking particles and/or charge director in the operative solution of liquid developing material at a predetermined value by effectively supplying the marking particles and/or charge director lost by the transport of liquid developing material to the copy substrate.
摘要:
An method and apparatus for eliminating residual charge potential in a multicolor electrostatographic system is disclosed, wherein a transparent conductive solution is applied to a developed image for neutralizing any charge potential therein prior to subsequent development of a superimposed electrostatic latent image. An apparatus for applying a thin layer of charge neutralizing material to the developed image is provided. In addition, various solutions have been described which may be advantageously utilized to provide a charge neutralizing material in the context of the present invention.