Printing – Rolling contact machines – Rotary
Utility Patent
1999-03-11
2001-01-02
Eickholt, Eugene (Department: 2854)
Printing
Rolling contact machines
Rotary
C101S248000, C101SDIG029, C101S483000
Utility Patent
active
06167806
ABSTRACT:
BACKGROUND OF THE INVENTION
Field of the Invention
The invention relates in general to rotary printing presses and in particular to a device for controlling the printing of one or more webs of material in a rotary printing press, and to a printing press equipped with such a device.
In conventional printing presses, control and monitoring of the printing of one or more webs are performed by an operator via a remote-control panel. The remote-control panel generally is provided with an analysis table, whereon the operator places the printed copy to be checked.
The remote-control panel also includes a device for controlling the printing of the web or webs of material by a plurality of keys arranged in two rows and disposed immediately below the analysis table, the keys permitting individual control of the opening and closing of the ink duct screws of the various printing units for effecting zonal adjustment of the quantity of ink applied to the web or webs.
The adjusting keys are disposed at a given location and are assigned definitively for controlling an ink duct screw corresponding to the printing of one zone of the web. For zonally adjusting the inking of a printed copy, the operator must therefore necessarily place the copy on the analysis table in a specific manner depending upon the properties of the printing press that is being used, so that each zone of the copy will be positioned opposite the respective adjusting key assigned for controlling the ink duct screw for inking the respective zone of the web of material.
This positioning of the printed copy in a specific manner, with the copy being centered, and the righthand and lefthand sides of the copy being adjusted on the analysis table, is complicated and time-consuming.
The positioning operation also requires that the operator be highly familiar with the printing press he or she is controlling, so that he or she can position the copy correctly relative to the adjusting keys of the control device.
The control device also includes an interface system between the operator and the rotary printing press, and the interface system has a selector for selecting all the functions of the rotary printing press, such as inking, wetting, ink coverage, behavior or characteristics of the web or webs, position of the printed image on the copy relative to the cut of the preceding copy, and accuracy of the folds formed in the copy.
From the control panel, the operator is able to act, with the aid of the control device, upon a confirmation member of the rotary printing press, in order to modify a variable of the printing process corresponding to one of the aforementioned functions.
For example, the operator can act upon a motor of an inking duct screw of an ink duct of a printing unit, in order to change the quantity of ink applied to the copy and, thus, adjust the inking in the printing process.
The operator, for example, can act upon the motors of the angle or turner bars of the paper passage through the printing press, in order to change the position of the image printed on the copy relative to the cut, or the cut position relative to the folds, which is equivalent to the function of positioning the printed image relative to the page or the cut of the printing press.
To that end, the interface system, currently provided between the operator and the rotary printing press in the remote-control panel, is constructed so that controlling the actuation members of the printing press requires that the operator input a given data count or number of discrete amounts of data for performing the remote control.
First, the operator must perform a procedure or process step that may be referred to as “physical mode selection”, which calls for inputting, into the interface system of the control device, the web number, web side (two-sided), the color number, and an item of information about the component of the printing press upon which the operator wants to act, such information being in fact the ink duct number or the angle bar number, or the number of the wetting device.
Thereafter, the operator is supposed to select a function of the printing press from the selector of the interface system. This function may be one of the inking, wetting, ink coverage and web behavior functions.
When the product printed by the rotary printing press is a magazine, the operator is able to input, into the interface system of the control device, the web number, the web page (two-sided), and the color number, instead of the “physical mode selection”. This procedure is called “page mode selection”.
If the product printed by the rotary printing press is a newspaper, the operator can input the page number, the color number, the section of the respective newspaper, the edition and the version.
After the “page mode selection” or “ink ribbon”, for example, has been performed, the selection of the corresponding function of the printing press or of the corresponding actuation member is activated with the aid of the control device.
This sequence of operations is rather long and requires beforehand that the operator be very familiar with the rotary printing press that he is operating because, if he should want to modify a variable of the printing process while he is checking a printed copy on the analysis table, he would have to determine the appropriate component of the press, deriving it from the respective page number and his knowledge of or familiarity with the curling tendency layout, i.e., the construction of the printing press, in order to achieve a given product.
The foregoing processes demand an ability to think in a complex manner, which can lead to mistakes and relatively long data input times, which distract the operator from his goal, namely, to act upon the printed copy as quickly as possible to avoid high product rejection rates.
To overcome the aforementioned disadvantages of the prior art, it is accordingly an object of the invention to provide a device for controlling the printing of one or more webs of material in a rotary printing press, permitting a significant reduction in the data which an operator must detect at the control panel, so that the operator can act very quickly upon an actuating member of a press component during the printing process without requiring the operator absolutely to have a thorough knowledge of the construction of the printing press that he is using.
With the foregoing and other objects in view, there is provided, in accordance with one aspect of the invention, a control device for controlling the printing of at least one web of material in a rotary printing press from a control panel, including an interface system between an operator and individual components of the printing press, comprising an automatic page selector, a memory for storing therein information pertaining to the printing press, products to be printed, control parameters of the individual printing press components, and display parameters of printing process variables, an interrogator for interrogating the memory, and a monitoring/control system for passing on all data to the printing press in order to use a selected component and to modify a variable appertaining thereto.
In accordance with another aspect of the invention, there is provided a control device for controlling the printing of at least one web of material in a rotary printing press from a control panel including an analysis table for receiving thereon at least one printed copy to be checked, the control device having an interface system between an operator and individual components of the printing press, with a selector for selecting all functions of the printing press, comprising an automatic page selector for reading out and determining specifications assigned to the printed copy to be checked, the specifications including a page and web number, respectively, a section of a respective newspaper, one of an edition and a version, respectively, and a page of the respective web, the specifications being formed as a code insertable into an image printed on the copy; a memory device for storing data with respec
Chretinat Michel
Pollet Henri
Eickholt Eugene
Greenberg Laurence A.
Heidelberger Druckmaschinen Aktiengesellschaft
Lerner Herbert L.
Stemer Werner W.
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