Bookbinding: process and apparatus – Apparatus
Patent
1996-07-24
1999-01-19
Fridie, Jr., Willmon
Bookbinding: process and apparatus
Apparatus
412 1, B42C 1300
Patent
active
058607811
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to an apparatus and method for producing documents composed of single sheets by means of an electrographic printing device which prints strip-like recording media.
2. Description of the Related Art
Documents, such as brochures, insurance certificates, etc., which are produced by means of electrographic, magnetographic or other non-impact printing devices, are preferably compiled from single sheets of differently colored or differently preprinted papers or of different basis weights (for example, paper weights).
Single-sheet printers having various (for example, 4) input compartments are employed for these instances of use. The documents can therefore be printed in the correct sequence by an appropriate choice of the input compartments.
Single-sheet printers necessitate an increased technical outlay for paper handling and printing. Moreover, the transport of single sheets is susceptible to faults. Furthermore, only paper weights and formats within a narrow range can be used.
Although it is known to couple electrographic printers for processing continuous paper to a separating device (such as a cutting device) and thereby to separate the printed-on print pages according to jobs, nevertheless only one format or one specific paper weight can ever be used in this case. Furthermore, in general, the increasing sequence during the printing operation with continuous paper is difficult to verify. Different paper weights and formats must subsequently be additionally fed into the printer in a separate work process.
European Patent Document EP-A1-0,553,870 discloses a document printing appliance which contains, as a central printing unit, an electrographic single-sheet printing device capable of operating in simplex and duplex mode. The single-sheet printing device is preceded by a paper feed device having an integrated cutting device, via which web paper is cut to format and fed to the printing unit. For the separate feed of precut single sheets, the paper feed device can additionally contain a single-sheet feed. In a paper post-processing unit, the printed single sheets are combined to. form a document.
SUMMARY OF THE INVENTION
The object of the invention is to provide a printing device and a method of the type initially mentioned, by means of which documents consisting of single sheets can be produced in a simple and cost-effective way with a high print quality and at a high printing speed.
This and other objects of teh invention are achieved by a document printing appliance with a paper feed device for processing strip-like recording media of preselectable configuration, an electrographic printing device which is coupled to the paper feed device on the input side and which has means for printing the strip-like recording medium or media on one side and/or on both sides, a paper post-processing device coupled to the electrographic printing device on the output side and having an associated print-page separating device, and a buffer store for the job-related reception of the separated print pages in corresponding storage regions and a job finishing device, which is coupled to the buffer store and which extracts from the storage regions of the buffer store in a document-dependent manner the job component of a first paper grade, which, drawn off from a first recording medium web, has been deposited in a corresponding storage region of the buffer store, and the job component of a second paper grade, which, drawn off from a second recording medium web, has been deposited in a corresponding storage region of the buffer store, and which combines them to form a document, and a job organization control unit for controlling the components of the document printing apparatus in dependence on an enterable document makeup.
A further development of the document printing appliance is provided wherein the job organization control unit has input means for the input of the document makeup, and a selection control coupled to the input means and compo
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Fridie Jr. Willmon
Oce Printing Systems GmbH
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