Abstract:
A method of printing comprising: storing a plurality of sets of linearization data (32) for a printhead (12; 14; 16; 18) with each set corresponding to a different history of usage of the printhead; monitoring (S210) the history of usage of the printhead; selecting (S220), prior to printing, from said plurality of sets of linearization data a set of linearization data that is the set that most closely matches the monitored history of usage of the printhead prior to said printing; and printing (S250) the image using the selected set of linearization data.
Abstract:
A method for generating a reference signal for use in an imaging apparatus having an encoder system that supplies an original encoder signal includes selecting one of a plurality of encoder signal conditioning algorithms corresponding to a plurality of desired functions, each encoder signal conditioning algorithm of the plurality of encoder signal conditioning algorithms being directed to facilitating a specific predefined function of the plurality of desired functions relating to a modification of the original encoder signal; reading values into the selected encoder signal conditioning algorithm to generate at least one programming parameter; and programming a hardware reference unit using the at least one programming parameter to generate a synthesized encoder signal representing the modification of the original encoder signal.
Abstract:
A print system includes a print structure with a surface. The print system further includes an electrolyte bath in which the surface of the print structure passes through while being exposed by an expose component that forms an image of charge on the surface. An electrolyte from the electrolyte bath adheres to the charge on the surface. The print system further includes an ink bath that applies ink to unexposed portions of the surface to form an inked image on the surface.
Abstract:
A device for cleaning an image carrier of residuals of an ink image, in which for inking the latent image on a latent image carrier, droplets are transferred from a liquid layer onto the surface of the latent image carrier by overcoming an air gap. The cleaning device is arranged at the circumference of the image carrier and removing the residual ink remaining after transfer of the image inked with a liquid ink is removed from the surface of the image carrier.
Abstract:
An image forming apparatus includes a latent image carrying member that carries an electrostatic latent image on a surface thereof, and an ink holding member that is disposed in opposing relation to the latent image carrying member and holds a thin layer of conductive ink on a surface thereof. The surface of the ink holding member is formed of a conductive material and has a plurality of projecting portions. The image forming apparatus further comprising a voltage applying unit that applies, to the projecting portions, a voltage of polarity different from that of a potential of the electrostatic latent image and thereby causes the ink to jump from the projecting portions located in opposing relation to the electrostatic latent image toward the electrostatic latent image. In the image forming apparatus, the following weak inequality is satisfied:(h1+h2-h3)/(h1+h2).gtoreq.0.1,where h1 represents height of each of the projecting portions, h2 represents thickness of the thin layer of ink on each of the projecting portions, and h3 represents thickness of the thin layer of ink between the projecting portions.
Abstract:
In a method and device for providing a visible image on a magnetic layer, the layer having a magnetic image thereon, the magentic layer is moved at a distance spaced from the top surface of a body of a magnetic fluid. The distance is sufficiently small that magnetic fluid from said body can be attracted to contact portions of said magnetic layer having a magnetic image thereon, by magnetic attraction, while the fluid is not attracted to portions of the layer that do not have a magnetic image.
Abstract:
A novel liquid development system is disclosed wherein a rigid member adapted to move in contacting cooperation with a resilient surface is provided on at least one end with a semi-rigid end extender so that the surface of the end extender lies substantially in the same plane as the rigid surface. This extender is found to eliminate damage done to the resilient surface by reason of its contact with the edge of the rigid surface.
Abstract:
This apparatus is disclosed for developing electrostatic latent images, comprising a developer supply unit having a first liquid repellent layer with a thickness in the range of 3 - 400.mu.(preferably 5 - 330.mu.). The first layer is disposed on a surface of a substrate, having a plurality of closely spaced pores distributed uniformly over the entire surface of the substrate and penetrating to the back surface thereof. A liquid developer is supplied to a first or back surface of this unit. A photoconductive sensitive plate is spaced closely to a front or second surface of the developer supply unit, to attract the developer to exude through the pores from the first surface of the said liquid repellent layer. More specifically, an electrostatic voltage is applied between the developer supply unit and the photoconductive sensitive plate to provide an electrostatic latent image preformed of electrostatic charges. Alternatively, a latent image could be formed by exposing the plate to light images or by the effect of pre-exposed light images on the said photoconductive sensitive plate.
Abstract:
Apparatus is disclosed for developing electrostatic latent images, comprising a developer supply unit formed of a liquid repellent layer having a thickness in the range of 3 Mu to 400 Mu (preferably 5 Mu to 330 Mu ), and a substrate, and having uniformly distributed pores disposed therethrough. A liquid developer is supplied to the back surface of this unit, and an exposing unit is disposed to form electrostatic latent images onto the front surface of the developer supply unit. As a result, the liquid developer applied to the back surface of the liquid repellent layer is distributed on the front surface by the action of the electric field established by the latent image.
Abstract:
CONTRAST CONTROL IN AN ELECTROSTATIC COPYING PROCESS EMPLOYING POLAR LIQUID DEVELOPMENT IS PROVIDED BY CONTROLLING THE EXPOSURE OF AN IMAGE RETENTION SURFACE IN ORDER TO ESTABLISH CHARGED INFORMATION AREAS HAVING A TOTAL AREA A''1, WHICH HAS A PROPORTION RELATIONSHIP R1 TO SURROUNDING BUFFER AREAS A''B. THIS RATIO R1 DIFFERS FROM A PROPORTIONAL RELATIONSHIP RO EXISTING BETWEEN INFORMATION ELEMENT AREAS A1 AND BUFFER AREAS AB OF THE OBJECTIVE.