JPH11217145A - Printer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a printer capable of continuously printing printing matters as different booklets and capable of binding them. SOLUTION: A paper conveying device 1 for conveying a sheet 9 printed by an electronic printer 10 is arranged between the electronic printer 10 and a binder 8. A three-way selector 11 of the paper conveying device 7 can switch the flow of the sheet 9 moved from the electronic printer 10 in the three directions. When the three-way selector 11 is switched to the upper stage side, the sheet 9 is moved to a broken paper receiver 12. When it is switched to the intermediate stage side, the sheet 5 is moved to the binder 8 by a conveyor 22. While, when it is switched the lower stage side, the sheet 9 is moved to a stacker 13 for temporarily holding the sheet 9.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] 1. Field of the Invention [0002] The present invention relates to a printing apparatus for improving the structure of a paper transport unit from an electronic printing machine to a bookbinding machine.

[0002]

2. Description of the Related Art FIG. 6 is a schematic view of a printing apparatus including a conventional electronic printing machine 10 and a paper conveying device 7. As shown in the drawing, the printing apparatus includes a web supply device 1 for wrapping a web 4 as a continuous body of sheets in multiple layers, an electronic printing unit 5 for printing on the web 4 surface, and a paper feeding device 3 for transporting the web 4. ,
A web cutting device 6 for cutting the web 4 into a predetermined size,
It is composed of a paper transport device 7 for transferring a sheet piece obtained by cutting the web 4 and a bookbinding machine 8 for converting the sheet piece into a booklet. The web supply device 1 has both ends of the roll-shaped web 2 pinched and supported. The support shaft 17 is provided with a brake device for braking the rotation, and is configured to apply a predetermined tension to the web 4 which is a continuous body of sheets sequentially fed.

The electronic printing unit 5 is a unit that prints on the web 4 supplied from the web supply device 1. For printing, print data is output from the memory 18 storing a plurality of digital data to the exposure devices 19a to 19d of the printing units 5a to 5d, and the print data is printed via the photosensitive drums 20a to 20d corresponding to the exposure devices 19a to 19d. This is performed by transferring pictures and characters based on the data to the four surfaces of the web. The turn bar 24 can wind the web 4 that has passed through the printing units 5a and 5b, and can feed the web 4 to the downstream printing units 5c and 5d with the web 4 turned upside down. Therefore, when the web 4 is passed through the turn bar 24, two-color printing can be performed on both the front and back surfaces of the web 4. Further, when the web is directly run from the printing sections 5a to 5d without passing the paper through the turn bar 24, four colors can be printed on only one side of the web 4.

[0004] The paper feed device 3 includes a pair of feed rollers 2.
The web 4 is sandwiched and conveyed at a running speed synchronized with the printing speed of the electronic printing unit 5 by the rotation of a motor. The paper transporting device 7 is a conveyor (paper transporting means) for receiving the sheets 9 cut at right angles to the traveling direction of the web 4 by the web cutting device 6 in the preceding process and sequentially transporting the sheets 9 to downstream processes. ) 22 is provided. A path switching unit 23 is provided on the conveyor 22 during the transfer. The paper conveyance device 7 can send out the sheet 9 to either the waste paper tray 12 or the bookbinding machine 8 by appropriately adjusting the path switching unit 23. With such a configuration, the paper transporting device 7 can control the roll-shaped web 2
The waste paper (defective paper) 15 at the beginning of printing that occurs is discharged to the waste paper receiver 12 and removed. Next, when the regular printing can be performed, the path switching means 23 is switched to the bookbinding machine side to convey the sheet 9, the bookbinding machine 8 binds the sheets one by one, and then discharges to the outside.

[0005]

Although the paper transport device of the electronic printing press is constructed and functions as described above, it is not possible to interrupt different types of printing during printing. Specifically, 10 printed materials of 5 pages, 30
It was not possible to continuously produce printed materials of different booklets, such as 100 printed pages. In addition, since it is necessary to restart the printing after stopping the printing machine and changing the settings, each time a print lot is changed, waste paper is generated, and sheet waste increases. Further, it is difficult to change the production plan, and the downtime of the printing machine is lengthened in accordance with the order change, so that there are various problems such as a decrease in the operation rate (productivity) of the machine. The present invention has been made in view of the above problems, and has as its object to provide a printing apparatus capable of continuously printing printed matter of different booklets and binding a booklet.

[0006]

In order to achieve the above object, the present invention provides a web supply device, a printing unit for printing on a web, a sheet cutter for cutting the web into sheets, and bookbinding the cut sheets. A printing apparatus provided with a bookbinding device, a wastepaper receiver, and a switching device for switching a sheet between the wastepaper receiver and the bookbinding device, wherein a stack device for temporarily storing sheets discharged from the sheet cutter is provided; The apparatus is a switching apparatus that switches sheets to a bookbinding apparatus, a stacking apparatus, and a waste sheet receiver.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a printing apparatus according to an embodiment of the present invention will be described with reference to the drawings. In addition,
The present invention differs from the above-described prior art only in the configuration of the paper transport device 7, and therefore, this portion will be described in detail. FIG. 1 shows an electronic printing apparatus according to the present invention. As shown in the drawing, a paper transport device 7 for transporting a sheet 9 is provided between the electronic printing machine 10 and the bookbinding machine 8. Electronic printing machine 1
A three-way switch 11 is provided at the exit of the “0”, that is, at the entrance of the paper transport device 7. The three-way switch 11 can switch the traveling route of the sheet 9 transferred from the electronic printing machine 10 in three directions.

In the present embodiment, the three-way switch 11 is
The flow of the sheet 9 can be switched between upward, middle (horizontal), and downward. In a state where the flow of the sheet 9 is switched upward, as shown in FIG. 2, the sheet 9 can be transferred to the damaged sheet receiver 12 disposed above the paper transport device 7, and the flow of the sheet 9 is In the state switched in the direction, the sheet 9 can be transferred to the bookbinding machine 8 as shown in FIG.
In a state where the flow of the sheet 9 is switched downward, as shown in FIG. 4, the sheet 9 can be transferred to the conveyor 16 disposed below the paper transport device 7. Conveyor 16
In the transfer direction, stackers 13 arranged in two stages (two sets) are provided. The stacker 13 temporarily holds the sheet 9, and a two-way switch 14 is provided corresponding to the entrance of the upper stacker 13 a while the conveyor 16 is being transported. The stacker 13b is disposed. In this embodiment, the two-stage stacker 13 is shown, but the number of the stackers 13 can be increased to three or more by increasing the number of one-stage or two-way switches 14.

Next, the operation of the printing apparatus according to the embodiment of the present invention will be described. As shown in FIG. 1, a web 4 is continuously fed from a roll-shaped web 2 of a web feeder 1 by a paper feeder 3, and predetermined printing is performed by an electronic printing unit 5 while the web 4 is running. Next, the printed web 4 is cut into a predetermined length by a web cutting device 6 and transferred as a sheet 9 to a paper transport device 7 disposed downstream. In the paper transport device 7, as shown in FIG.
If the three-way switch 11 is switched to switch the sheet flow upward, the waste paper 15 cut by the web cutting device 6
Is discharged to the upper waste sheet receiver 12. by this,
It is possible to collect and remove the waste paper 15 generated at the beginning of the printing start due to sheet contamination, defective printing, and the like. In addition, since the waste paper is much smaller in quantity than the printed matter to be a product, the waste paper receiver 12 may be lightweight. By placing the lightweight waste paper receiver 12 above the paper transport device 7, maintenance and inspection of the bookbinding machine 8 and the paper transport device 7 are relatively easily performed.

Next, as shown in FIG.
When the sheet flow is switched to the middle stage by switching 1, the sheet 9 is transferred to the bookbinding machine 8 on the downstream side by the conveyor 22. As a result, normal sheets 9 can be sequentially stacked on the bookbinding machine 8 to bind a predetermined booklet. FIG.
As shown in (2), when the three-way switch 11 is switched to switch the flow of the sheet 9 downward, the sheet 9 is transferred to the lower conveyor 16 and sent to the stacker 13 side.

Switching to the two-stage stackers 13a and 13b is performed by operating a two-way switch 14 provided in the middle of the conveyor 16. As shown in FIG. 4, the sheet 9 can be supplied to the stacker 13a by switching the two-way switch 14 so that the sheet flows toward the entrance of the upper stacker 13a. Further, as shown in FIG. 5, if the flow of the sheet 9 is switched to the further downstream conveyor 16 side, the sheet 9 can be sent to the lower stacker 13b. As described above, the electronic printing apparatus includes the two-stage stacker 13a, 1
By providing 3b, it is possible to replace and exchange the nine bundles of sheets on the other side while one side is in operation. That is, it is possible to extract a sheet bundle and perform preparations before stacking the next sheet, so that continuous printing can be performed without stopping the machine.

As described above, in the present embodiment, the three-way switch 1 of the paper conveying device 7 disposed downstream of the electronic printing press 10 is used.
By switching 1 to the stacker 13 side and holding the sheet 9, another printed matter can be interrupted in the middle of printing and bookbinding work, and it is easy to change and adjust the production plan.
In addition, it is not necessary to stop the printing machine each time the booklet setting is changed, so that the waste paper 15 can be reduced, the operating rate of the printing apparatus can be improved, and productivity can be greatly improved. By arranging the two-stage stackers 13a and 13b and switching the three-way switch 11 at appropriate timing, the number of sheets (amount) is not limited, and continuous printing can be performed. In the bookbinding machine 8, when a setup change such as exchanging a cover is required, the booklet is temporarily stored in the stacker 13, and then transferred to the bookbinding machine 8 at a proper timing, so that different types of booklets can be continuously produced. Become. Furthermore, by increasing the number of stackers 13,
Various effects can be obtained, for example, it is possible to cope with various kinds of switching of small lots.

Although the embodiment of the present invention has been described above, the present invention is, of course, not limited to this, and various modifications can be made based on the technical concept of the present invention. For example, in the above-described embodiment, the switching unit uses the three-way switch 11 that can switch the flow of the sheet 9 in three directions with one device. May be switched in three directions.

[0014]

As described above, the present invention provides an apparatus for supplying a web as a continuous body of sheets, a printing unit for printing on the web, a sheet cutter for cutting the web, and a sheet cutter for cutting the web. In a printing apparatus provided with a bookbinding device for binding a sheet, a stacking device for temporarily storing the sheet discharged from the sheet cutter is provided, and the flow of the sheet discharged from the sheet cutter is transmitted to the stacking device and the bookbinding device. Since a switching device for switching between the two is provided, another printed material can be interrupted during the printing and bookbinding work, and the production plan can be easily changed and adjusted. Further, it is not necessary to stop the printing machine every time the setting of the booklet is changed, so that it is possible to reduce the number of waste sheets, improve the operation rate of the printing apparatus, and greatly improve the productivity. In addition to the above configuration, the switching device enables the sheet flow to be switched to the brokeback receiving the unnecessary sheets together with the bookbinding device and the stacking device, and the brokeback is switched from the bookbinding device and the stacking device. If it is arranged at the upper part, maintenance and inspection of the bookbinding machine and the paper transport device are relatively easily performed.

[Brief description of the drawings]

FIG. 1 is a schematic side view of an electronic printing apparatus according to an embodiment of the present invention.

FIG. 2 is a schematic side view illustrating a state in which a three-way switch provided in a paper transport device of the electronic printing apparatus in FIG. 1 is supplying a sheet to a waste sheet receiver.

FIG. 3 is a schematic side view showing a state in which a three-way switch provided in a paper transport device of the electronic printing apparatus in FIG. 1 is supplying sheets to a bookbinding machine.

4 is a schematic side view showing a state in which a sheet supplied to a stacker side via a three-way switch provided in a paper transport device of the electronic printing apparatus in FIG. 1 is supplied to an upper stacker; is there.

5 is a schematic side view showing a state in which a sheet supplied to a stacker side via a three-way switch provided in a paper transport device of the electronic printing apparatus in FIG. 1 is supplied to a lower stacker; is there.

FIG. 6 is a schematic side view of a conventional electronic printing apparatus.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 web supply device 2 roll-shaped paper roll 3 paper feeder 4 web 5 electronic printing unit 6 web cutting device 7 paper transport device 8 bookbinding machine 9 sheet (printed paper) 10 electronic printing machine 11 three-way switcher 12 waste paper tray 13 stacker Reference Signs List 14 Switcher 15 Broken paper (defective paper) 16, 22 Conveyor 17 Support shaft 18 Memory 19a to 19d Exposure device 20a to 20d Photosensitive drum 21a, 21b Feed roller 23 Path switching means 24 Turn bar

Claims (2)

[Claims] 1. A web supply device, a printing unit for printing on a web, a sheet cutter for cutting the web into sheets,
A bookbinding device that binds the cut sheets, a wastepaper receiver,
In a printing apparatus provided with a switching device for switching a sheet between a waste sheet receiver and a bookbinding device, a stack device for temporarily storing sheets ejected from the sheet cutter is provided. A printing apparatus comprising a switching device for switching a sheet to a paper receiver. 2. The printing apparatus according to claim 1, wherein the waste paper receiver is disposed in a downstream side of the switching device and above the switching device.