Printing – Multicolor – Rotary machines
Reexamination Certificate
2001-09-10
2004-04-27
Nguyen, Anthony H. (Department: 2854)
Printing
Multicolor
Rotary machines
C101S174000
Reexamination Certificate
active
06725771
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a synchronous controller of a rotary press having a printing unit and other necessary units, wherein the rotary press for printing newspapers has, as a printing unit, a plurality of multicolor printing units each combining at least two printing divisions individually having two printing couples capable of printing four pages of a newspaper arranged in an axial direction, for instance, provided to be able to contact each blanket cylinder and also provided to be individually driven so as to select a drive control subject based on print image information of each printing couple.
2. Description of the Prior Art
A rotary press for individually driving printing mechanisms constituting a printing division such as a printing couple comprising a plate cylinder and blanket cylinders and a pull-in apparatus is set forth in Japanese Patent Laid-Open No. 8-85196 for instance. This bulletin describes a technology wherein a drive motor provided to individually drive the printing mechanisms and pull-in apparatus rotates with its angle of rotation controlled by a computerized motor controller, capable of mutually adjusting well and driving the individual printing mechanisms and pull-in apparatus according to proceeding of printing. In addition, this bulletin mentions that an aggregate of printing mechanisms including the pull-in apparatus can be variably combined.
Moreover, Japanese Patent Laid-Open No. 5-64882 shows the rotary press comprising units that are the printing mechanisms rendered mechanically independent so as to individually drive, and describes a technology wherein synchronized phase control is performed to the drive motor of this rotary press unit by control means. In addition, it mentions that automatic coupling among the units is simple.
Japanese Patent Laid-Open No. 6-47905 shows the rotary press having a plurality of cylinders individually driven by an electric motor and one folding apparatus individually driven, and describes a technology of simple configuration and superior in flexibility wherein a master system for operating this rotary press comprises one higher-level master system and a group of autonomous print stations separated into a plurality and assigned to the folding apparatus. It also describes a technology for allowing the group of the print stations to be assigned to the folding apparatus in any desirable manner.
Japanese Patent Laid-Open No. 10-114058 shows a synchronous controller for synchronously controlling a plurality of motors so as to keep differences in mutual phases of mechanical axes of a plurality of machines rotated and driven by the plurality of motors in a fixed relationship.
On the other hand, a multicolor printing unit of which BB printing divisions are stacked in a direction of height has an in-feed roller upstream of a first printing division and an out-feed roller downstream of a last printing division provided respectively in order to stably run the continuous paper running against gravity, so that these rollers are rotated and driven in an appropriate relationship with rotation of the printing couples of the printing unit so as to adjust traveling tension of the continuous paper.
However, the above described Japanese Patent Laid-Open No. 8-85196 does not disclose the technology for variably combining an aggregate of printing mechanisms including the pull-in apparatus. In addition, Japanese Patent Laid-Open No. 5-64882 does not disclose the technology for performing automatic coupling among the units, and Japanese Patent Laid-Open No. 6-47905 does not disclose the technology for assigning the print stations to the folding apparatus. Furthermore, Japanese Patent Laid-Open No. 10-114058 does not disclose the technology for specifying or selecting a subject to be controlled by the synchronous controller shown therein.
Meanwhile, for example in the case of newspaper printing, there is increasing use of the rotary press wherein all the printing units are multicolor printing units, that is, the so-called BB printing divisions stacked by at least two pieces and normally by four pieces in the direction of height so that a multicolor printed type page can be placed on any page and complicated form feed is not required whichever page the multicolor printed type page is placed.
However, a newspaper of which all pages are the multicolor printed type pages is seldom published for various reasons. Accordingly, there may be a printing division not required to operate when actually printing the newspaper, and so it has been requested with increasing eagerness that printing should be performed while stopping the printing division not required to operate, that is, the printing division that may be stopped, from the viewpoints of energy saving, reduction of running costs and also improved work safety.
However, in the case where a worker specifies the printing division to be stopped each time, it often happens that specification of the printing division to be specified is forgotten so that there arises inconvenience to implementation of the desired energy saving, reduction of running costs and also improved work safety, and there were cases where it caused a slowdown of the work, though very rarely, by specifying a printing division not to be specified and consequently producing faulty printed matter and causing trouble in the printing process.
For that reason, a rational apparatus capable of securely specifying the printing division without error has been desired.
On the other hand, there are the cases, in newspaper printing, where less than six pages are printed by a printing machine capable of printing total eight pages on both sides by arranging machine plates equivalent to four newspaper pages in an axial direction. In this case, as the continuous paper of a width fit for the number of pages to be printed is used for printing, it is necessary to change a tension range of the traveling direction worked on the continuous paper by the in-feed roller and out-feed roller in order for the continuous paper to travel in a stable state in the printing unit, and the rational apparatus capable of securely making the change without error has been desired.
SUMMARY OF THE INVENTION
An object of the present invention is to provide a synchronous controller of a rotary press for selecting a control subject based on print image information by automatically selecting a printing division not required to operate, that is, the printing division that may be stopped and excluding it from subjects of synchronous operation control, and thus capable of energy saving and reduction of running costs.
Another object of the present invention is to provide a synchronous controller of a rotary press for selecting a control subject based on print image information by recognizing a width dimension of the continuous paper required by each multicolor printing unit based on the print image information, and capable of automatically setting a reference tension on traveling of the continuous paper in advance of printing operation based on the recognition, having the continuous paper travel stably from a start of printing operation according to the reference tension, and preventing malfunctions such as a paper drift wherein the continuous paper moves from side to side while traveling due to an unstable tension, occurrence of wrinkles in the traveling direction and paper out.
A further object of the present invention is to provide a synchronous controller of a rotary press for selecting a control subject based on print image information, capable of, even if a master control division suffers a breakdown, synchronously controlling the rotary press with another master control division.
A still further object of the present invention is to provide a loop-like network line capable of bypassing a part of the network line suffering a breakdown, if any.
A still further object of the present invention is to provide a master control division for setting a driving reference phase and a driving reference speed, processing
McGlew and Tuttle PC
Nguyen Anthony H.
Tokyo Kikai Seisakusho Ltd.
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