Übersetzung für "Kopierverfahren" in Englisch

In a photographic copy process the copy master is scanned in intervals by a source of measuring light.

The latter process is currently the state of the art as the copying process in all office complexes.

These charge control agents have often been selected from liquid toner systems of electrostatic copying processes.

One of the most unique features of the process was the “Distortion Correction Printing Process”.

Such a film element cannot be imitated with conventional copier processes.

A new technique can now greatly speed up the molecular copying process.

The asphalt solution as such is a generally known substance such as utilized in asphalt copying procedures or in the photochrominum methods.

Thus, in a copying process it is possible to rough work the fabricated part 25 from its blank 25'.

It is known to machine such workpiece contours by the copying method, by turning or milling.

When creating the pieces entitled „Risse“ (2004), the technique of handwritten copying is used for the first time to bring into being pictures that are both text and drawing.

Because the images on the two sides of the print were not in the same plane, both could not be perfectly focused at the same time.

An electrophotographic copying process is disclosed comprising the steps of performing a cleaning operation on a recording element by carrying out at least one rinsing operation of the element utilizing a first quantity of a developer liquid; performing a series of copying cycles comprising charging, exposing, developing with a liquid developer, transferring and fixing; and intermittently performing additional cleaning operations independently of each cycle of the series of copying cycles using a quantity of developer liquid which is at most as great as the first quantity.

The crystalline spirodipyran compound which separates out from this solution can be used--either directly or after purification, e.g., by recrystallization or reprecipitation--as a dye-forming component for copying processes.

For example, German Pat. No. 10 42 374 discloses a copying method where the density of the original is scanned point by point in its three primary colors to obtain discrete density values. By weighted approximation of the mean, area densities are acquired from the discrete density values and the area densities are then used to arrive at an optical filter combination for the exposure of the material to be copied, utilizing integral density measurements.

A copying process as recited in claim 1, wherein said additional cleaning operations are performed after every second copying cycle at most.

There remains a need for an electrostatic copying process which comprises developing an electrostatic charge image and transferring the developed pigment image, which results in little environmental pollution and which also provides a good half-tone reproduction in view of the generally high state of copying technology.

The invention provides a copying process which functions with liquid development and by means of which copies can be prepared having half-tone reproductions which meet high quality requirements while simultaneously incurring reduced pollution of the environment as a result of liquid evaporation.

Later models use xerography, a plain-paper copying process, which uses laser technology and dry toner powder.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT Generally, in known copying processes, a photoconductive layer is charged and then exposed to form a charge image. The charge image is developed by means of charged toner particles which are dispersed in a developer liquid and excess developer liquid is removed from the photoconductive layer by rollers.

In the case of machining by turning in the copying method, the workpiece revolves, and the tool is moved back and forth under the control of the copying apparatus.

German Offenlegungsschrift No. 2,418,240 describes an electrophotographic copying process wherein an electrostatic image is developed with a liquid developer on a final web-shaped image support, in the form of a thin film, by bringing the reverse face of the image support, the front of which is lying flat against the photoconductor cylinder carrying the electrostatic image, into contact with the liquid developer.

The invention provides a copying process which functions with liquid development and by means of which copies can be prepared having half-tone reproductions which meet high quality requirements while simultaneously incurring reduced pollution of the environment as a result of liquid evaporation.

It is the object of the invention to eliminate this disadvantage and in particular to improve a copying process and a printing apparatus of the above-defined type so that a practically continuous, uninterrupted printing process is possible.

The application of the copy on the transparently or opaquely arranged or designed mounting-air foil can be effected photochemically, by printing or by any other suitable copying process.

In the last mentioned copying process, the compound capable of luminescence (sensitizer) loses its luminescence capability image-wise, depending on the exposure.

The mechanical wear of the photoconductive layer on the drum 1, was less or, at most, equal to the wear suffered by a photoconductive drum operated according to a conventional copying process.

The Prior Art In electrostatic copying processes, a latent electrostatic image of the original which is to be copied is formed on the image recording material.

German Offenlegungsschrift No. 2,418,240 describes an electrophotographic copying process wherein an electrostatic image is developed with a liquid developer on a final web-shaped image support, in the form of a thin film, by bringing the reverse face of the image support, the front of which is lying flat against the photoconductor cylinder carrying the electrostatic image, into contact with the liquid developer.