JPS5929865B2 - Automatic document feeder of recording device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a paper feeding device in a reproduction transmission device, etc., and in particular to an automatic document feeding device configured to automatically perform interrupt transmission of an emergency document during continuous transmission of stacked normal documents. Regarding equipment.

A copy transmitter etc. continuously feeds stacked originals one by one from an attached paper feeder and transmits them one by one, but it is often necessary to interrupt the transmission of an emergency original during the transmission of a regular original. It happens.

For this purpose, in the past, the feeding of normal documents from a paper feeder was temporarily stopped, and an emergency document was fed through a paper feed port provided separately from the paper feeder to perform emergency transmission. However, stopping the paper feeding device and supplying the emergency document are all done manually, which requires time and effort, and the paper feeding device must be stopped only after the document being sent has passed. The drawback was that it usually took a long time to operate.
The present invention has been made in order to eliminate the above-mentioned drawbacks of the conventional art. Therefore, an object of the present invention is to provide an emergency document to the paper feed slot when transmitting an emergency document in an interruptive manner during transmission of a normal document. To provide a new automatic document feeder capable of automatically transmitting an emergency document immediately after passing a normal document being transmitted by a simple operation of just inserting the document.

The above-mentioned object of the present invention is to provide a paper feeding frame for stacking a plurality of sheets of ordinary originals, and to separate and feed the ordinary originals one by one when the ordinary originals are placed on the paper feeding frame. a feeding roller and a separation roller for detecting the normal document, a first detection means for monitoring the normal document fed by these rollers and placed in the normal document path, and a first detection means for interrupting the emergency document separately from the normal document. a paper feed port provided in the paper feed port, a feed nip roller provided in the paper feed port, and a second detection means provided in a path for the emergency document fed from the nip roller to monitor the emergency document; , a document path in which the normal document path and the emergency document path merge and are connected to the document reading section; and when an emergency document is placed, the emergency document is given priority next to the normal document being conveyed in the normal document path. control means for controlling rotation and stop of the feeding roller, the separating roller, and the nipping roller while monitoring output signals of the first detecting means and the second detecting means so as to reach a document reading section; This is accomplished by the automatic document feeder of the recording device.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A preferred embodiment of the present invention will be specifically described below with reference to the accompanying drawings.

FIG. 1 is a schematic cross-sectional view showing an embodiment of an automatic document feeding apparatus according to the present invention, FIG. 2 is a block diagram showing an example of a control circuit, and FIG. 3 is a time chart during operation.

In the figure, reference numeral 1 indicates a recording machine housing, and an optical fiber 2, a linear-to-circular conversion optical fiber 3, and a photoelectric conversion element 4 are built into the housing.

The tip reading surface 2a of the optical fiber 2 is connected to the housing 1.
A light emitting body 5 is provided near the front end reading surface 2a. The above tip reading surface 2a
A pressure roller 6 for the document P is provided on the other side, and a document passage path a is formed behind the roller 6 and the leading end reading surface 2a. Reference numeral 7 indicates a paper feeding device installed on the upper side of the recording machine housing 1, and the original paper feeding frame 8' (7
1) A feeding roller 9 is installed on the lower front surface, and the roller 9
A document feeding path b continuous to the document passing path a is formed at the top, and between this feeding path b there are a feed nipping roller 10 and a separation roller 11 that separates the stacked documents P one by one from below. are placed spaced apart in the front and back.

Further, a paper feed branch path c for emergency documents P'' is branched upward from the rear of the front feed nipping roller 10 of the paper feed path b, and an emergency document feed branch path c for emergency documents P'' is installed on the upper side of the paper feed frame 8. It communicates with the front part of the pedestal 12 via the feed clamping roller 13. SWP is a power switch, and when this is closed, the front feed clamping roller 10 and the feed clamping roller 13 of the branch path e are rotated. .

Switches SW1 to SW3 are means for detecting various documents,
Among them, SWl is a switch installed at the bottom of the paper feed frame 8, and is closed when the document P is placed, thereby causing the feed roller 9 and the separation roller 11 to rotate.

SW2 is the feed nipping roller 10 and separation roller 1 of paper feed path b.
This is a switch consisting of a photoelectric element installed between the document P and the document P, and is opened and closed by the passage of the document P. SW3 is a switch consisting of a photoelectric element installed in the paper feed branch path c, and is closed when the emergency document P'' passing through the branch path c arrives.
The rotation of the feed nipping roller 13 is stopped by this signal. Reference number 15 is inverter INl, NAND circuit NAN
DL and a NOR circuit NORl. This circuit 15 controls the feed nip opening and the roller 13 when the switch SW3 detects an emergency document V and the switch SW2 detects a normal document. When the rotation is stopped and the switch SW2 detects the passage of the document P and is opened accordingly, and the switch SW3 is closed by detecting the emergency document P', this state is detected and the feeding roller 9 is opened. At the same time as stopping the rotation of the separation roller 11, the rotation of the feed nipping roller 13 is restarted, and furthermore, when the switch SW3 detects the passage of the emergency document P'', the rotation of the feeding roller 9 and the separation roller 11 is restarted. It has a function.

Next, the operation will be explained with reference to the time chart shown in FIG. First, when the power switch SWP is closed, each mechanism of the recording machine, that is, the optical fiber 2, the linear one-circle conversion optical fiber 3, the photoelectric conversion element 4, and the light emitter 5 is operated, and at the same time, the document becomes ready to be read.
The front feed nip roller 10 of the document feed path b of the paper feed device 7 and the feed nip roller 13 exclusively for emergency documents in the paper feed branch path c are rotated.

When the document P is placed on the paper feed frame 8 in this state, the switch SWl is closed, and the feed roller 9 and separation roller 1
1 is rotated, and one sheet of the lowest document P is delivered to the paper feed path b. When the original P reaches the position of switch SW2,
When the switch SW2 is closed and the original P is nipped by the next front feed nipping roller 10 and further passes through the switch SW2, the switch SW2 is opened.
The document P is continuously transported by the front feed nipping roller 10 and moves to the document passage path a. The document P is then pressed onto the tip reading surface 2 of the optical fiber 2 by the pressure roller 6.
When it is pressed into contact with a, it is read and converted into a transmission signal. In this manner, the originals P are sequentially fed out and transported, and read and transmitted. If it becomes necessary to read or send an emergency document V while the normal document P is being read or transmitted, place the emergency document V on the pedestal 12 and use the rotating feeding holder at the front of the tray. Insert it into the roller 13. In this case, when the emergency document P'' is fed into the paper feed branch path c by the roller 13 and reaches the position of the switch SW3, the switch SW3 is closed and the signal is sent to the control circuit 15 shown in FIG. Feed the nipping roller 13 through the NOR circuit NORl
As a result, the rotation of the feeding and holding roller 13 is stopped, and the emergency document P' is stopped at that spot.
This switch SW3 is in a closed state (for example, logic "1" state)
In this case, when the switch SW2 of the paper feed path b is opened due to the passage of the normal original P (for example, logic '(' state)), a signal is applied from the switch SW2 to the NAND circuit NANDl of the control circuit 15 through the inverter INVl, As a result, a control signal is sent from the NAND circuit NANDl to the rollers 9 and 11, and at the same time, a control signal is also sent to the roller 13 through the NOR circuit NORl.

As a result, the rotation of the feeding roller 9 and the separation roller 11 is stopped, and the feeding and transport of the normal document P is stopped, and at the same time, the rotation of the feed nipping roller 13 is restarted, and the transfer of the emergency document V is carried out. be exposed. The emergency document ν then reaches the front feed holding roller 10 from the branch path c, reaches the document passage path a like the normal document P described above, and is pressed against the tip reading surface 2a of the optical fiber 2 by the pressure roller 6. A read is made. Further, at this time, when the emergency document P'' passes the switch SW3, the switch SW3 is opened,
In response to this signal, the rotation of the feeding roller 9 and the rear feeding and nipping roller 11 is restarted, and feeding and transport of the normal document P is resumed, and reading and transmission are performed.

When the feeding and transport of the document P on the paper feed frame 8 is completed in this way, the switch SWl is opened to stop the rotation of the feeding roller 9 and separation roller 11, and the power switch SW1 is opened.
When the WP is opened, the feed nipping rollers 10, 13 and each mechanism 2 to 6 of the recording machine are stopped, and all operations are completed.

The present invention is configured and operates as described above.According to the present invention, when it becomes necessary to read and send an emergency document while a normal document is being read and transmitted, the emergency document is read and transmitted. Just by inserting it into the paper feed branch path, after the normal document being transferred passes through the paper feed path, it will be automatically transferred, read and sent, and after this emergency document is transferred, the normal document will be automatically transferred again. Feeding and transporting is performed, and reading and transmission are resumed.

Therefore, the operation is extremely simple, there is no risk of malfunction, and the reading and transmission of emergency documents can be carried out quickly, and the feeding and transfer of normal documents that have been interrupted can be resumed smoothly and quickly, etc. It is effective and suitable as a paper feeding device for machines, etc. Although the present invention has been described above with respect to one preferred embodiment thereof, this is merely an illustrative example, and the scope of the claims hereinbefore described is not limited only by the embodiment described herein. Of course.

[Brief explanation of the drawing]

FIG. 1 is a schematic configuration diagram showing one embodiment of an automatic document feeding apparatus according to the present invention, FIG. 2 is a block diagram of a control system related to each switch and each roller, and FIG. 3 is a block diagram of each switch and each roller. This is a time chart showing the operational relationship between 1...Recorder housing, 2...Optical fiber 2a...Tip reading surface, 3...
・Straight line circular conversion optical fiber, 4...Photoelectric conversion element, 5...Light emitter, 6...Pressure roller, 7...Paper feeder, 8...Paper feed frame base, 8a...Discharge port, 9...Feeding roller, 10...Feeding nipping roller, 11...
... Separation roller, 12 ... cradle, 13 ...
...Feed nipping roller, 15...Control circuit,
a... Original passing path, b... Paper feeding path, c
... Branch paper feed path, SWP ... Power switch, SWl, SW2, SW3 ... Switch,
P-...Manuscript, P7...Emergency manuscript.

Claims (1)

[Claims] 1. A paper feeding frame for stacking a plurality of sheets of ordinary originals; a feeding roller for separating and feeding the ordinary originals one by one when the ordinary originals are placed on the paper feeding frame; a separation roller, a first detection means for monitoring the normal document fed by these rollers and placed in the normal document path, and a paper feed provided to interrupt the emergency document separately from the normal document. a feeding port, a feed holding roller disposed at the paper feed port, a second detection means for monitoring the emergency document provided in a path for the emergency document fed from the holding roller, and the normal document path. and the emergency document path merge to connect to the document reading section, and when an emergency document is placed, the emergency document preferentially reaches the document reading section next to the normal document being conveyed in the normal document path. When the second detecting means detects the emergency document and the first detecting means detects the ordinary document, the rotation of the feed holding roller is stopped, and the second detecting means When the first detecting means detects an emergency document and the first detecting means detects the passage of a normal document, it stops the rotation of the feeding roller and the separating roller, and at the same time restarts the rotation of the feeding and holding roller. and control means configured by a logic circuit for restarting rotation of the feed roller and separation roller when the detection means detects passage of the emergency document.