JPS60101555A - Automatic original feeding method - Google Patents

Abstract

PURPOSE:To improve the workability of office work by holding an automatic original feed mode even after a jamming original is re-set in its initial state. CONSTITUTION:If the original 7 jams in the middle, a CPU11 turns on an original jam lamp which is not shown in a figure. An operator opens a platen cover 5 to re-set the jamming original 7 on platen glass 2 at its starting position, and then close the cover 5. Then, a switch 19 for detecting opening/closing of a cover is turned on again, and the CPU11 judges that the original jamming is removed. When a button 17 for starting copying is pressed, the CPU11 supplies a signal for starting copying to a copy control circuit 16 to start copying operation, and the CPU11 starts a belt 6 to run on the completion of copying operation to discharge the original 7. The CPU11 feeds a next original 7 when a switch 18 for original setting detection is turned on, namely, when the next original 7 is set at an original setting part 3 to take a copy similarly, and then the original is discharged automatically.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an automatic document feeding method in an electronic copying machine.

[Prior art]

Some electronic copying machines are designed to automatically feed an original set next to the platen cover onto the platen glass with the platen cover closed, and to automatically send it out after copying is completed.

FIG. 1 shows a part of such a conventional electronic copying machine. In this electronic copying machine, a platen glass 2 is provided at the center of the upper part of the main body 1, a document setting section 3 is provided on the right side of the platen glass 2, and a document discharge section 4 is provided on the left side thereof. A platen cover 5 is provided above the platen glass 2 so as to be openable and closable around its rear end. The platen cover 5 is provided with a belt 6. The belt 6 receives the driving force of a motor (not shown) provided in the main body 1 of the copying machine via a universal joint (also not shown), and travels in the direction of the arrow.

Let us now assume that the platen cover 5 of this electronic copying machine is closed, and in this state, the original 7 is automatically fed and copied. In this case, first, the original 7 is set on the original setting section 3, and its leading end is inserted between the platen glass 2 and the belt 6 as appropriate. Then, a switch (not shown) for detecting the document set is pressed by the leading edge of the document 7 and turned on, setting the apparatus to automatic document feeding mode.

In this state, when a copy start button on an operation panel (not shown) is pressed, the belt 6 starts running and feeds the original 7 onto the platen glass 2. When the document 7 reaches the desired position on the platen glass 2, the belt 6 stops running at this timing. As a result, the original 7 is placed on the platen glass 2.
set in the desired position above. When the original 7 is set in this manner, a scanning unit (not shown) provided below the platen glass 2 starts driving at this timing, and copying is performed. When the specified number of copies have been completed, the belt 6 starts running again at this timing, and the document 7 is sent to the document discharge section 4.

At the point when the original 7 is sent out to the original output section 4, the next original 7
is set in the document setting section 3 and the switch for detecting document set is turned on, the next document 7 is fed 1j at the same time as the previous document 7 is fed. Therefore, the copy start button only needs to be pressed once at the beginning. If the document 7 is not set on the document setting section 3 even after a certain period of time has elapsed since the document 7 was delivered to the document discharge section 4, the apparatus enters the stop mode.

On the other hand, when performing normal copying with this electronic copying machine, the platen cover 5 is opened, the document 7 is directly set at the desired position on the platen glass 2, and then the platen cover 5 is closed. In this state, the switch for detecting the document set is off, and the apparatus is in the normal copying mode. Therefore, in this case, even if the copy start button is pressed, the belt 6 remains stopped and normal copying is performed.

By the way, in such an electronic copying machine, the original 7 sent out from the original setting section 3 sometimes gets jammed on the way. In such a case, the document jam lamp on the operation panel lights up to notify the operator. The operator opens the platen cover 5, resets the jammed document 7 to the desired position on the platen glass 2, closes the platen cover 5, and presses the copy start button to perform normal copying. Become.

However, in such a conventional electronic copying machine, if the document 7 becomes jammed, the automatic document feed mode is canceled. Therefore, even after copying is completed, the document 7 is not automatically fed out, but the operator must open the platen cover 5 and take it out. Also, if the next original 7 is set in the original setting section 3 at this time, the automatic document feed mode has been canceled, so set the next original 7 in the original setting section 3 again, and then make copies. You will have to press the start button. When the document 7 is jammed in this way, it is necessary to take out the previous document 7, reset the next document 7, operate the copy start button, etc., which is cumbersome and time-consuming. There was a drawback.

[Purpose of the invention]

The present invention has been made in view of the above circumstances, and it is possible to maintain the automatic document feed mode even after resetting the original to be automatically fed when the document is jammed on the way. The purpose of this paper is to provide an automatic document feeding method that is possible.

[Structure of the invention]

In the present invention, when a document is set in the document setting section, the first detection means detects this, sets the device to automatic document feed mode, and then runs the platen cover belt just before the copy start button is pressed. If the document jams in the middle, the platen cover is opened, the jammed document is correctly placed in the desired position on the platen glass, and then the platen cover is closed. When the copying start button is pressed, copying is started, and after the copying is completed, the belt is run to feed out the original, and at this time, the next original is placed in the original setting section. When the first detecting means detects that the original is being moved, the next original is fed in at the same time as the optical original is fed out.

〔Example〕

The present invention will be described in detail with reference to Examples below.

FIG. 2 shows the automatic document feeder of this embodiment. The CPU (Central Processing Unit) 11 is connected to the data bus 1
2 through read-only memory 13, runtime
Access memory 14, belt running motor drive circuit 1
5 and copy control circuit 16, respectively.

This device includes a copy start button 17 as a manual means.
, a switch 18 for detecting the document set, and a switch 19 for detecting opening/closing of the platen cover are provided, respectively, and data are manually input via the data bus 12.

Next, the operation of this device will be explained with reference to the flowchart (FIG. 3) and FIG. 1. When this apparatus is in the stop mode, the CPU II monitors whether the switch 18 for detecting the document set is turned on (step 2). While the CPU II is not turned on (N), the CPU II puts the device in the normal copy mode (step ■). When the original 7 is set in the original setting section 3 and the switch 18 for detecting the original set is turned on (step 2, Y), the CPLIII sets the apparatus to automatic original feeding mode (step 2).

CP [Jll monitors whether or not the copy start button 17 is pressed in this state (Step 2).

When the copy start button 17 is pressed (Y), Cpuz
supplies a drive signal to the belt running motor drive circuit 15. As a result, the belt running motor 20 is driven, the belt 6 starts running, and the document 7 is transferred to the platen glass. Send it upwards (step ■).

At this time, the CPU II monitors whether or not the document 7 is jammed (step 2). In other words, cpuz+ measures time using the internal hour 4 mechanism, and the document 7 is measured within a predetermined period of time based on the belt 60 running speed and the maximum document length.
It is monitored whether the rear end of the document passes through the switch 18 for detecting the document set.

If the document 7 is not full (N), the CPU 11 monitors whether the predetermined time has elapsed, that is, whether the single carriage feeder 7 has been fed to the desired position on the platen glass 2 (step ■). When sent (Y), the CPU
I1 supplies a copy start signal to the copy control circuit 16, thereby setting the copying force (open) (step 2).

On the other hand, if the original 7 gets jammed in the middle (Step ■;
Y), (, PIJll lights up the document jam lamp (not shown) and notifies the operator of this. In this state, the CPU II switches the platen cover open/close detection switch 19 once to main. Monitor whether it turns on again after turning off (step [phase]).

When the operator opens the platen cover 5, resets the jammed document 7 to the correct position on the platen glass 2, and then closes the platen cup <-5, the switch 19 for detecting the opening/closing of the platen cover is turned off once. and then turns on again (step [phase]; Y). Then the CPU
II determines that the original jam has been cleared (step ■).

CPUII monitors whether or not the copy start button 17 is pressed in this state (STEP@).

If it is not pressed (N), the CPU 11 changes the time to the main side (Step 0), and after a certain period of time has passed (Step ■).
;Y)? Set the 2nd position to stop mode. On the other hand, if the copy start button 17 is pressed (step ■; Y), the CP
[Jll supplies a copy start signal to the copy control circuit 16,
Copying is thereby started (step ■).

cputi monitors when copying is finished (step). When copying is completed (Y), CPU 1 starts running belt 6,
The original 7 is ejected (step @l). CPLII
At this time, I monitors whether the switch 18 for detecting the document set is turned on (step @). If it is on (Y), that is, the next document 7 is placed in the document setting section 3.
If set to , the next original 7 is fed in at the same time as the previous original 7 is ejected (step ■), copies are made in the same manner as above, and then the next original 7 is automatically ejected. . On the other hand, if the switch 18 for detecting the document set is off (step 0; N), copying is completed;
The device goes into stop mode.

〔Effect of the invention〕

As described above, according to the present invention, the automatic document feed mode can be maintained even after the jammed document is reset as expected. Therefore, the work becomes easier,
There is no need for wasted time, and office work efficiency is improved. Moreover, since it can be done electrically without changing the machine, there is no increase in cost.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal sectional front view showing a part of a conventional electronic copying machine, FIG. 2 is a block diagram of an automatic document feeder in an embodiment of the present invention, and FIG. 3 is a diagram for explaining the operation of the device. This is a flowchart. 2...Platen glass, 3...Document setting section, 4...Document ejection section, 5...Platen cover, 6...Belt, 7...manuscript, 11...cpu. 13...Read-only memory, 14...
... Random access memory, 15 ... Belt running motor drive circuit, 16 ... Copy control circuit, 17 ... Copy start button, 18 ...
- Switch for detecting document set, 19... Switch for detecting opening/closing of platen cover, 20... Motor for belt running. Applicant Fuji Xerox Co., Ltd. Agent Patent Attorney Ume Yuka Yamauchi 1 Plan 2 Ward No. 3

Claims (1)

[Claims] A document setting section is provided next to the platen glass, and a platen cover is provided above the platen glass so as to be openable and closable, and the document set in the document setting section is transferred to the platen by the running of a belt provided on the platen cover. In an electronic copying machine that automatically feeds a document to a desired position on the glass and then copies the document, when a document is set in the document setting section, the first detection means detects this and automatically controls the device. When the copying start button is pressed, the belt runs and starts feeding the original, and if the original jams in the middle, the platen cover is opened and the jammed original is moved to the platen glass. When the platen cover is correctly set at the upper desired position and then the platen cover is closed, the second detection means detects this, and when the copy start button is pressed, copying is started, After copying is completed, the belt is run to feed out the original, and at this time, if the first detection means detects that the next original is set in the original setting section, the next original is sent out at the same time as the optical original is fed out. An automatic document feeding method characterized in that the document is fed.