JPS62289830A - Original handling device - Google Patents

Abstract

PURPOSE:To improve the operability by discharging all originals, in case when the next original has been set to a feed paper port in the course of discharging an original to a discharge port, in case of a constitution in which the feed paper port has no stopper. CONSTITUTION:After a discharge of paper has been ended, a state of a cover 27 is detected by checking a digitizer opening/closing detecting sensor 28, a closed state of the cover 27 is decided to be an original handling mode, and the device returns to a start and waits for setting of a sheet. On the other hand, in case when the cover 27 is opened and the device is in a digitizer mode, a little longer time portion than the time required for allowing a discharge sheet to arrive in the course of feeding paper by its inertia is brought to time counting as a feed paper cancel timer. That is to say, while the timer is ended, a digitizer inlet sensor 22 is monitored continuously, and when the sensor 22 detects a sheet within its time, it is decided that the sheet has arrived, and when the sheet which has been detected once is drawn out by an operator's hand, the sensor 22 is turned off, by which the processing is returned to a start, and setting of the next sheet is awaited. By this processing, an endless operation can be prevented.

Description

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 the document.

[Background of the invention]

Generally, in image forming devices such as copying machines, the power of the document handling device (sometimes added and used) to feed the document to a predetermined position such as the exposure position. A function has been added that allows you to specify a certain area of a document and extract or remove only that specified area to form a copy.When specifying the area, enter the X-Y coordinates. There are some known digitizer devices that input data using a well-known digitizer device.However, some conventional digitizer devices are known to be set above a presser plate on the platen glass of a copying machine. This requires the operator to manually open the presser plate after using the digitizer and place the document on the platen glass again.Furthermore, if the above-mentioned document handling device is installed in the copying machine, the digitizer device must be installed. If you run out of space and place the document on a stand, for example, the operator will have to worry about replacing the document.
Another drawback is that the installation area is 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. death,
It is conceivable that the originals ejected from the original feeder are ejected onto the top surface of the cover of the digitizer device, and the originals ejected from the 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 It is an object of the present invention to provide a document handling device that eliminates the above-mentioned drawbacks, has improved operability, and has less risk of malfunction.

〔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 on which sheet originals are stacked, and sheet originals 2 are placed on the entrance tray 1 with the lower side in the figure facing up. The first document detection DF human sensor 3 is a reflection type sensor that detects the leading and trailing edges of the sheet document, and the feed rollers 4 and 5 sandwich and convey the sheet document pressed against each other. 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 that is 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 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 original is sent by the ejection roller 11 and the full-surface belt 7, and is sent along the ejection guide plate until the ejection rollers 15 are brought into pressure contact with each other. 16 and are sequentially loaded.

On the other hand, a well-known digitizer 26 is mounted on the top of the DF of the present invention, and a digitizer cover 27 covering the entire surface of the digitizer is placed on 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. Further, there is a digitizer paper feed port in the upper right corner of the DF that feeds the document on the digitizer, and although it is hidden when the cover is closed, it is exposed when the cover is open. 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. The feed rollers 23 and 24 press against each other to sandwich and convey the sheet original. From the digitizer paper feed port to the transport roller 23. The original sent out by 24 is sent along the guide plate and is sent onto the platen glass from the right end of the aforementioned 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 ejected by ejecting rollers 15 and 16 which are crossed and pressed against each other, and are sequentially stacked on the digitizer cover mentioned above.

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

This is composed of one each of planar resistors 50 for reading positions in the horizontal direction (X direction) and the vertical direction (Y direction), and a lead pen switch (SW) 51.

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 will be described later, a voltage is output depending on the position set by the pen SW, and is read as the setting value of the area or the above-mentioned key.

The operator places the document face up on the resistor 50 and sets it so that it is aligned with the upper right corner. Then, two points in the area specified by the pen SW51, for example, point A, point A', or point 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 are the aforementioned sensors, namely, DF input sensor, DF output sensor, and digitizer population sensor.

A digitizer open/close detection sensor and a clock pulse signal are input via a buffer. Further, the output signal from the digitizer section is an X/Y application switching signal for switching the voltage applied to the digitizer electrode, which switches between "L' for X-axis application" and H' for Y-axis application. As input signals, the lead pen signal that turns on when the lead pen 51 is pressed against the digitizer electrode surface 50 and the analog signal that is output depending on the pressed position are
/There are an X-axis input voltage signal and a Y-axis input voltage signal input in the Y-axis direction. 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 opening/closing of the DF digitizer cover, 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, 5 steps
Proceed to step 2 to start 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 exit 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 step 3, 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 embodiment, in the digitizer mode, the ejection port and the feed port are on the same surface with the digitizer surface as a tray, so the sheet slides on the digitizer surface with its momentum when ejecting, and the leading edge of the sheet slides on the digitizer surface. If the control of this embodiment is not performed, the same sheet may be ejected, then fed, and the process repeats, resulting in an endless operation.

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 the paper feed cancellation time. ing. 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 5tep7. 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 when it is turned off, the process returns to the start and waits for the next set of sheets. It is clear that this process prevents endless operation. On the other hand, 5tep6
If the sensor does not turn on until the timer ends, 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 operation.

[Brief explanation of the drawing]

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 a document image and multiple images, and Figure 3 is the control unit of the DF and copying machine. FIG. 4 is a flowchart for controlling the operation of the DF. l...Entrance tray, 4.5...Feed roller, 7...Full surface belt, 8...Drive roller, 10...Original glass, 19 ... Motor, 26 ... Digitizer, 51 ... Lead pen switch.

Claims (1)

[Claims] In a document feeding device that feeds documents one by one from a paper feed port to a document reading position and then discharges them to an ejection port after reading, the document feed port has no stopper, and the document is ejected from the ejection port. A document handling device characterized in that when a next document is set in a paper feed slot while a document is being discharged, all documents are discharged.