JPS62290660A - Original handling device - Google Patents

Abstract

PURPOSE:To improve operability by allowing the next feed only after the set is released when the next original is set at a feed port within a fixed time after an original is discharged. CONSTITUTION:A sheet original 2 is mounted on an inlet tray, and the first original detecting inlet sensor 3 detects the front end and rear end of this sheet original 2. A stopper 6 prevents the original 2 from being fed onto a platen 10, and it is released by a solenoid 21. According to this constitution, an inlet sensor 22 is monitored, with a cancel timer set to a time somewhat longer than the time that the discharged original 2 reaches a feed port by its impetus, and if the original 2 is detected within that time, this original 2 is removed, then after the inlet sensor 22 is turned off, the stopper 6 is released, and the next original can be set.

Description

Detailed Description of the Invention 3. Detailed Description of the Invention [Technical Field] The present invention relates to a document handling device that feeds a document to a reading position and discharges the document after reading.

[Background of the invention]

2. Description of the Related Art Generally, an image forming apparatus such as a copying machine is sometimes used with an additional document handling device that feeds a document to a predetermined position such as an exposure position. In recent years, new functions have been added to image forming apparatuses such as copying machines that specify a certain area of a document and extract or remove only the specified area to form a copy. When specifying the area at that time, there are known methods in which X-Y coordinates are input, and methods in which the input is performed using a well-known digitizer device. However, conventional digitizer devices are known to be set above the presser plate on the platen glass of a copying machine, but in this case, the operator manually opens the presser plate after using the digitizer to read the original. There is the hassle of replacing it on the platen glass. Furthermore, when the above-mentioned document handling device is installed in a copying machine, there is no space to install the digitizer device, and if the digitizer device is placed on an external stand, for example, the operator will have to take the trouble of replacing the document, and the installation space will also be reduced. The disadvantage is that it becomes large.

In order to solve these drawbacks, a digitizer device as shown in Figure 1 is integrated on the top surface of the document feeder, and a feed port dedicated to the digitizer is provided separately from the feed roller of the document feeder. However, it is conceivable that the originals ejected from the document feeder are ejected onto the top surface of the cover of the digitizer device, and the originals ejected from the two-digitizer device are ejected onto the top surface of the digitizer device.

However, in the above configuration, the feeding port is different depending on whether the digitizer is used or not, and there is a drawback that it is difficult for the operator to understand the operation method. There is also a risk that the original document discharged from the document feeding device will be sent toward the feeding port due to force majeure and will be fed again.

〔the purpose〕

SUMMARY OF THE INVENTION An object of the present invention is to provide a document handling device which eliminates the above-mentioned drawbacks, improves operability, and reduces the risk of making mistakes.

〔Example〕

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is a schematic diagram showing an embodiment of a document handling device (hereinafter referred to as DF) among copying apparatuses to which the present invention can be applied. In the figure, reference numeral 1 denotes an entrance tray for stacking sheet originals, and the sheet originals 2 on the entrance tray 1 are stored with the lower side in the figure facing up. First document detection DF human body sensor 3 This is a reflective sensor that detects the leading and trailing edges of a sheet document, and the feed rollers 4 and 5 press against each other to sandwich and convey the sheet document. A stopper 6 prevents the document from being fed onto the platen glass 10, and is released by the operation of the DF input lost flange solenoid 21 to enable feeding. The full-surface belt 7 is an endless belt with a width large enough to cover the entire surface of the sheet document, and the surface of the belt 7 is an endless belt with a width that covers the entire surface of the sheet document.
It has a sufficient coefficient of friction so that it can be conveyed by sliding on the O belt, and is wrapped around a drive roller 8 and a turn roller 9, and is configured to prevent the entire surface belt 7 and drive roller 8 from slipping. . Further, the ejection roller 11 is in pressure contact with the entire surface of the belt, and conveys the original ejected from the original glass 10 by sandwiching it, and when the DF output sensor 13 for detecting the original detects the leading edge of the original using a reflective sensor,
The entire belt is once stopped, then run in reverse, and when the DF output sensor 13 detects the trailing edge of the document, it is stopped at a predetermined position. After the exposure operation is completed, the originals sent by the ejection roller 11 and the full-surface belt 7 are sent along a paper ejection guide plate, and are ejected by the paper ejection rollers 15 and 16 pressed against each other and stacked one after another.

On the other hand, a well-known digitizer 26 is mounted on the top of the DF of the present invention, and a digitizer paper feed port 27 that covers the entire surface of the digitizer is mounted on the top. The ejected document described above is loaded onto this cover.

An opening/closing detection sensor 28 detects opening/closing of this cover.
is installed, and plays an effective role in mode switching, etc., which will be described later. Furthermore, there is a digitizer section opening in the upper right corner of the DF that feeds the document into the digitizer section, and is hidden when the cover is closed, but is exposed when the cover is opened. The digitizer paper feed port includes a digitizer entrance detection sensor 22 that detects documents stacked on the digitizer surface, and uses a reflective sensor.

and feed roller 23. 24 press against each other to sandwich and convey the sheet original. The document sent out from the digitizer feeder opening by conveyance rollers 23 and 24 is sent along the guide and is sent onto the platen glass from the right end of the above-mentioned full-surface belt.

Motor 1 drives all the rollers and the entire belt.
A clock disk and a sensor 20 are provided which are driven by a clock disk 9 and which generate clock pulses when rotating, and which control the operation of the DF. Flapper 5L
When 31 is off, the sheets are reversed, ejected by the ejecting rollers 15 and 16 pressed against each other, and sequentially stacked on the digitizer cover described above.

FIG. 2-1 is a schematic diagram of the digitizer section of the present invention.

This is constituted by a dopene switch (sW) 51 with one planar resistor 50 for reading the position in the horizontal direction (X direction) and the vertical direction (Y direction).

The planar resistor 50 is placed not only under the sheet where the original is placed, but also under the clear key 52. It is also located under keys such as the registration key 53, and as described later, voltage is output depending on the position set by the pen SW, and the setting value of the area and the above keys -
Close and read.

The operator places the document face up on the resistor 50 and sets it so that it is aligned with the upper right corner. and Ben SW 51
Two points in the area specified by, for example, A, A' point or B.

By pressing point B', A B'A'B' A
area is specified, and the area specification is set by pressing the registration key 53 (described later) with the pen SW. For example, the trimming function and image conversion function are activated at the time of copying, and a copy as shown in Fig. 2-2 is output. That's why.

FIG. 3 is a block diagram showing the control section of the DF and copying machine. The controller in the figure is a well-known microcomputer (
The microcomputer (hereinafter referred to as a microcomputer) accesses the RAM 110 by a program stored in an internal ROM.

Output signals to the DF section are sent via the driver to each of the loads mentioned above, namely the forward rotation and reverse rotation signals of the drive motor, the DF input lost collar SL, the digitizer entrance stop collar SL, and the discharge flapper S.
0N10FF L. Input signals include the aforementioned sensors, ie, DF occupancy sensor, DF output sensor, digitizer occupancy sensor, digitizer opening/closing detection sensor, and clock pulse signals, which are input via a buffer. Additionally, the output signal from the digitizer section is an X/Y application switching signal that switches the voltage applied to the digitizer electrode surface over time.

Switching is performed by X-axis application 'H' and Y-axis application. As input signals, a lead pen signal that turns on when the lead pen 51 is pressed against the digitizer electrode surface 50, and an analog signal that is output depending on the pressed position are input in the X/Y axis direction as an X-axis input voltage signal and a Y-axis input voltage. There's a signal. Furthermore, it is configured to output input/output signals to each control section of the copying machine.

FIG. 4 is a detailed flowchart of the operation of the DF of the present invention, and the explanation will be made according to this flow. First 5te
At pl, the opening/closing detection sensor 28 detects the surface of the DF digitizer moat, thereby determining whether the mode is the digitizer mode or the DF mode. The cover open state is the digitizer mode, the digitizer entrance is selected, and it is checked whether a sheet is set on the digitizer entrance detection sensor 22. On the other hand, when the cover is closed, the normal DF entrance is selected in the DF mode, and the DF entrance sensor 3 detects the sheet. And if each sheet is detected, 5tep2
Proceed to , and start the sheet feeding operation. A detailed explanation of this operation will be omitted as it is not directly related to the present invention, but as a summary, the drive motors for the belt 7 and rollers 4 and 5 are turned on, the sheet is fed from the belt to the discharge roller 11, and when it arrives at the exit sensor 13. This is an operation in which the motor is reversed, and after the sheet cuts the output sensor 13 again, a predetermined lock is counted until the exposure position is reached and the motor is stopped. At the same time as the sheet is stopped at the exposure position, the copying operation is started in 5tep3, and the copying operation for a predetermined number of sheets is waited for. After the process is completed, the process advances to step 4 and the sheet ejecting operation is started. This is done by turning on the drive motor, turning off the motor when the sheet passes the exit sensor 13 and a predetermined counter from the sensor off, that is, when the trailing edge of the sheet passes through the paper ejection roller 11, thereby completing the ejection. The main focus of the present invention is sequence control from the end of paper ejection to the start of the next paper feed. In this example, in the case of the digitizer mote, the ejection port and the feed port are on the same plane with the digitizer surface as a tray, so the sheet slides on the digitizer surface with its force when ejecting, and the leading edge of the sheet slides on the digitizer surface If the control of this embodiment is not carried out, the same sheet will continue to wander and then be fed, resulting in an endless operation in which this process is repeated.

Therefore, in step 5 after paper ejection is completed, the state of the cover is detected by checking the digitizer open/close detection sensor 28, and the closed state of the cover is determined to be DF mode, and the above operation is assumed to be impossible, and the process returns to the start to set the sheet. wait. On the other hand, in the case of the digitizer mode with the cover open, 5tep6 is processed as a countermeasure for the above-mentioned operation. here,
This process monitors the paper feed slot for a period of time that is slightly longer than the time required for the ejected sheet to arrive at the paper feed slot with its force, and this predetermined time is counted as a paper feed cancellation timer. There is. That is, while the timer expires, the digitizer population sensor 22 is continued to be monitored, and if the sensor 22 detects it within that time, it is determined that the sheet has arrived, the timer is cleared, and the process proceeds to the next step 5 step 7. Here, the system waits until the detected sheet is pulled out by the operator's hand, that is, until the digitizer population sensor 28 is turned off, and then the process returns to the start and waits for the next set of sheets. It is clear that this treatment can prevent nindress movement 1''. On the other hand, 5
If the sensor is not turned on until the timer ends in step 6, it is determined that the above-mentioned phenomenon does not occur and the process returns to the start when the timer ends.

In addition, in this embodiment, the operation was performed as paper feeding → copying by setting this sheet, but the first sheet is started by pressing the set + copy key, and the second and subsequent sheets are started if they are set within a certain timer after paper ejection is completed. It is clear that even a configuration in which this is done can be easily realized by using a fixed timer and a paper feed cancel timer, and the object of the present invention can also be achieved.

〔effect〕

As described above, according to the present invention, it is possible to improve operability and reduce the risk of malfunctions such as endless effort.

[Brief explanation of drawings]

Figure 1 is a diagram showing the schematic configuration of the DF, Figure 2-1 is a schematic diagram of the digitizer section, Figure 2-2 is a diagram showing the original image and copying weight image, and Figure 3 is the control of the DF and copying machine. FIG. 1 is a flowchart for controlling the operation of the DF. 1...Entrance tray, 4.5...Feed roller, 7...Full surface belt, 8...Drive roller, ', O...Original glass , 19... Motor, 26... Digitizer, 51... Lead pen switch.

Claims (1)

[Claims] A device that feeds originals one by one from a paper feed port to a document reading position, and after reading is finished, ejects them to an ejection port. If the document is placed in the feed slot within a certain amount of time after
A document handling device characterized in that the next feeding is enabled only after the set is released.