JPS62105838A - Original handling device - Google Patents

Abstract

PURPOSE:To securely carry out only the discharge of an original by a feeding means for feeding the original set to an original mounting means to a predetermined position and a control means for controlling the feeding means according to the output of a detecting means. CONSTITUTION:A drive motor 19 is rotated forward, and an original is sent to a stopper 6 and registered for time of registration by registration timer. The original is adapted to overrun by a belt 7 until an end of the original is detected by an outlet sensor 13, and reversed when said end is detected. This time, a regist counter is started when the original leaves the outlet sensor 13 and a drive motor 19 is turned off to stop the original at a predetermined position on a platen glass surface after the completion of counting. At the same time, a copy start signal is sent to a main body to turn off an original setting signal. On the other hand, the main body turns off the original feeding signal upon receiving the copy start signal to start copy process. After the completion of the copy process, the main body judges whether or not a stop key is depressed, and once turns on the original discharge signal to carry out only the discharge of original if said key is depressed.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field] The present invention relates to a document handling device that feeds a document to a predetermined position.

[Prior art]

Generally, an image forming apparatus such as a copying machine is sometimes used with an additional document handling device that feeds the document to a predetermined position such as an exposure position.

Some of these document handling devices detect the document being fed using an optical sensor, etc., and automatically start when the document is set in the paper feed slot of the device and detected by the sensor mentioned above. There is. With such devices, if you allow automatic start at all times due to the image forming device, problems may occur. For example, when a document handling device is used to feed a document and perform a series of copying operations, If you set the next document in the paper feed slot and want to stop the operation on the image forming apparatus side, if the image forming apparatus starts automatically, a problem will occur if you try to just eject the document.

〔the purpose〕

The present invention has been made in view of the point -E, and its object is to provide a document handling device that only ensures the ejection of documents.

〔Example〕

Embodiments of the present invention will be described in detail below with reference to the drawings.

FIG. 1 shows the M factor χ example of a document handling device to which the present invention can be applied. The sheets are stacked with the lower side in the figure facing up (image surface).The first document detection sensor (entrance sensor) 3 is a reflective sensor that detects the leading edge and trailing edge of the sheet document.Feeding rollers 4 and 5 The sheet original is sandwiched and conveyed by pressure contact.

A stopper 6 prevents the document from being fed onto the platen glass 10, and is released by the operation of the solenoid z1 to enable the document to be fed. The full-surface belt 7 is an endless belt with a width large enough to cover the entire surface of the sheet original, and one surface has a sufficient coefficient of friction to allow the original to slide over the platen glass 10 using frictional force. The belt is wrapped around a drive roller 8 and a turn roller 9, and is configured to prevent the entire belt 7 and drive roller 8 from slipping. Further, the ejection rollers 11 and 12 are in pressure contact with each other, and are conveying the document ejected from the page 10 between them. ] 3 is a reflective sensor (output 11 sensor) that detects the original at the output [-1] section, and when it detects the leading edge of this original, it stops the entire belt 7 and rollers l 1 , J, and 2. Then, the exit sensor 13 detects the trailing edge of the document and stops at a predetermined position. After the M light operation is completed, the discharge roller 11.
The originals sent by 12 are sent along a paper discharge guide plate 14, and are sequentially loaded onto a paper discharge tray 17'' by paper discharge rollers 15 and 16 pressed against each other. Furthermore, the feed roller 4, the full-surface belt drive roller and the discharge roller 11,
15 is driven by a drive motor 19.

Next, FIG. 2 is a block diagram showing a control section of a document handling device (hereinafter referred to as DF). In the figure, 30 is a well-known microcomputer, INT is an interrupt board,
A pulse signal from a clock generator 20 when the drive motor 19 rotates is input. Based on this pulse signal, DF
The operation is controlled. A signal from the input sensor 3 is input to the input boat PI, and a signal from the exit sensor 13 is input to the input boat P2. Also, input boat P
, (are input with a signal from a sensor 23 that detects the opening/closing of the DF.Furthermore, from the output port Fl""F3, a drive motor is sent via drivers D and -D3, respectively, based on the input signal of the microcomputer mentioned above. The forward rotation and reverse rotation drive signals of 19 and the drive signal of the stopper 5L21 are output.

Furthermore, the input boat P4-P, .
A document feed signal and a document discharge signal of F are input, and a copy start signal and a document set signal to the main body of the copying machine are output from output ports F4 to F5.

3 and 4 are detailed flowcharts of the present invention, in which FIG. 3 is a flowchart for explaining the operation of the DF, and FIG. 4 is a flowchart for explaining the operation of the main body.

First, by pushing a document into the artificial tray l of the DF, the entrance sensor 3 detects the leading edge of the document, outputs a document set signal to the copying machine main body, and waits until a document feed signal is input at the same time (Step). On the other hand, the main unit outputs the document feed signal and
Wait until the original set signal is input from F (Step
1O), and when each signal is received, the process proceeds to the next step. The DF rotates the drive motor 19 in the normal direction, and aligns the document by popping it to the stopper 6 for the time equal to the alignment timer (Step 1).
p2), and after the timer, the stopper solenoid 21 is turned on, the stopper is raised, and document feeding is started. The document is overrun by the belt 7 until the leading edge of the document is detected by the exit sensor 13. When the leading edge is detected, the document is reversed. Next, when the document leaves the exit sensor 13, a registration counter is started, and when the count ends, the document is moved to a predetermined position on the platen glass surface -L-. In order to stop at the position, the drive motor 19 is turned off and the stopper SL4 is also turned off. At the same time, send a copy start signal to the main unit and turn off the original set signal (Step 3).
On the other hand, upon receiving the copy start signal, the main unit turns off the document feed signal (5step 11) and starts the copy process (
St, ep12).

Therefore, with the above-described content, even if there is a hole in the document, automatic paper feeding and copy start upon insertion of the document can be performed normally by detecting only the leading edge of the document.

After the copy process is completed, the main unit determines whether the stop key has been pressed, and if it has been pressed, it turns on the document ejection signal (Step 13) and instructs the DF to only eject the paper. Return to the start of the flowchart.

On the other hand, the DF waits until a document feed signal or a paper discharge signal is input in step 5, and when either one is input, it is determined that copying is completed and the operation is resumed. If the user inserts a perforated original into the tray while copying, the DF will have no way of informing the main body whether or not the next original has been set. Therefore, in step 5, the copy start signal is turned off, and the drive motor 19 is rotated in the forward direction to carry the document to the stopper position while starting the document search timer, and until the timer ends, the entrance sensor 3 detects a location other than the hole. to monitor. If the document is in a binder hole, it will naturally be detected during this search timer, and at that time the document set signal will be turned on to the main unit.

Notify the main unit that the next document is being fed, and press 5te.
Returning to p3, paper is fed simultaneously with paper ejection. The main body is also 5Leps
The program advances to H and waits for a copy start signal. On the other hand, 5te
If the original is not detected during the search timer in p5, either the next original has not been set or the main unit set it in the -H tray and pulled it out again during copying, and at the same time as the original eject signal is input in 5tep4, the original is output in 5tep6. Move on to the paper ejection operation.

At 5tep6, copy start signal is turned off and drive motor 1 is turned off.
The motor 9 is rotated in the normal direction, and the motor 19 continues to be rotated in the normal direction until the document is completely ejected by the paper ejection timer.

Naturally, even if the next original is set, the stopper 6 will not open, so the paper will not be fed. Then, in step 5, the motor 19 is turned off after paper ejection is completed, and the process returns to the start of the flowchart only after the document detection is turned off. This is because the user wants to press the stop key during copying to the main unit to temporarily stop the copying process, but this Step
7 [If so, as long as the next original is set, 5
Paper feeding will start again from tapl, and the function of the stop key will not be satisfied.Therefore, in the present invention, the set original is removed once and then set on the tray again to start the feeding.

〔effect〕

As described above, according to the present invention, when it is detected that a document has been set after the feeding operation has stopped and a state in which there is no set document is detected, in order to enable the start of document feeding, the continuous Even when it is desired to interrupt copying and only eject the original, it is possible to prevent the feeding of the next original, improving operability.

[Brief explanation of drawings]

FIG. 1 is a diagram showing a schematic configuration of a document handling device to which the present invention can be applied, FIG. 2 is a block diagram showing a control section of the document handling device, and FIG. 3 is a flowchart for explaining the operation of the document handling device. FIG. 4 is a flow chart for explaining the operation of the main body of the copying machine. 1----One-person rotary tray 3----One-person rotor sensor 7----One entire belt 10---Platen glass 13--One output rotor sensor 19-m-Transport motor 21-One part Totsupa sole made

Claims (1)

[Claims] a document placement means for setting a document; a detection device for detecting the document set on the document placement device; and a feeding device for feeding the document set on the document placement device to a predetermined position. and control means for controlling the feeding means in accordance with the output of the detection means, and the control means detects when the feeding means is stopped and after the detection means detects that there is no document. A document handling device characterized in that it is possible to start feeding a document by detecting that the document is set.