JPS61128267A - Copying machine - Google Patents

Abstract

PURPOSE:To eliminate laborious operations by providing a control means which permits interrupted copying after the copying operation for the set number of sheets for continuous copying of the originals under copying ends when a copying interruption signal is inputted thereto. CONSTITUTION:Waiting interruption is instructed by the 1st on of an interruption key and immediate interruption instructed by the 2nd on the switch. The interruption is released and the normal operation is resumed by the 3rd on. YES is discriminated in a step S20 if the waiting interruption is instructed. Whether the optical system ends the final scan or not, i.e., whether the copying operation for the set number of sheets of continuous copying for the originals under copying at said time ends or not is discriminated in a step S22. NO is discriminated and the copying is continued as it is if the operation does not end yet. YES is discriminated and the discharging of the originals is executed in a step S24 when the operation ends. The copying of the original under copying in this stage ends and after said original in discharged from the original platen glass, the original to be subjected to interrupted copying is imposed on the original platen glass and is subjected to copying.

Description

[Detailed Description of the Invention] The present invention relates to a copying machine, and particularly to control when there is a request to copy another document while copying is in progress, that is, when an interrupt signal is manually input. .

Conventionally, in a copying machine equipped with an automatic document feeder, when a copying interrupt signal is manually input, the copying operation for the copy paper that was fed before the interrupt signal is manually terminated. After a while, the original on the platen glass will be ejected. Next, the next original, which has been processed in the original document placement section and is waiting to be fed, is sent out, passed over the original platen glass, and ejected as is without being copied. Thereafter, copying of the interrupted original is performed. Hereinafter, this interrupt processing will be referred to as an immediate interrupt.

In this case, it is necessary to return the original from the output tray to the original document tray after interrupt copying, and the original to be returned is a combination of the original being copied when the interrupt signal was input and the next original that was skipped. There are 2 pieces. However, if the final copy of the set number of copies has been made for the former original when the interrupt signal is input manually, only the latter 1& is restored.

Problems to be Solved by the Invention However, with the above-mentioned immediate interrupt control, the operator has to restore the original each time after the interruption copying is completed, which is cumbersome. There is a risk of erroneously determining the necessity of restoring the manuscript. Therefore, it is possible to automatically detect and display the number of originals to be restored, but this method is expensive and does not solve the problem of requiring the operator to restore the originals. Furthermore, it is conceivable to provide a means for automatically returning the ejected original, but considering that the frequency of interruption copying is not that high, the efficiency of use is low and it is not practical.

Means for Solving the Problems Accordingly, the copying machine according to the present invention, when a copying interrupt signal is input, starts copying after the copying operation for the number of continuous copies of the document being copied at that time is completed. , is characterized in that it is provided with a control means that enables interrupt copying. The interrupt processing that is a feature of the present invention is hereinafter referred to as a waiting interrupt.

Note that in this waiting interrupt, it is necessary to wait until the copying process being performed at that time is completed for the set number of copies. In the present invention, an interrupt copying request cannot wait until all copies of a large number of originals have been completed in reality, but it can be made at a level of urgency that can wait until it is time to continuously copy one original and replace it with the next original. This is also in light of the fact that many things happen. In recent years, copying speeds have become faster and the waiting time tends to be shorter, and the majority of continuous copies are less than 10 sheets/l original, so the waiting time is actually not that long.

In addition, waiting interrupt control can be used in conjunction with conventional immediate interrupt control (the combination type will be explained in the example below), and in an emergency when waiting time for waiting interrupt cannot be postponed, immediate interrupt can be selected. .

X demon swarm An embodiment of the present invention will be described below with reference to the accompanying drawings.

[Configuration of Copying Machine] In FIG. 1, a photoconductor drum (1) that can be rotated in a counterclockwise direction is disposed approximately in the center of the main body (30) of the copying machine, and a main eraser lamp is arranged around the photoconductor drum (1). (2), sub charger (3), sub eraser lamp (4),
Main charging charter (5), developing device (6), transfer charger (7), copy paper separation charter (8), blade type cleaning device! (9) is provided.

The photoreceptor drum (1) has a photoreceptor layer on its surface.
This photoreceptor is sensitized and charged by passing through the eraser lamps (2), (4) and chargers (3), (5), and receives image exposure from the optical system (1O).

The optical system (10) is installed below the document table glass (+6) so that the original image can be scanned, and includes a light source (not shown), movable mirrors (12), (13), and lenses ( 14) and a mirror (15).

The light source and movable mirror (I 1) are photosensitive drums (+)
The movable mirrors (12) and (13) move to the left at a speed of (v/n ) is (v/2 n
) is driven by a DC motor (M3) to move to the left at a speed of Note that when changing the copy magnification, the lens (14) moves on the optical axis and the mirror (15)
) moves and swings.

On the other hand, on the left side of the copying machine main body (30), there is a manual paper feed tray (
18), Paper feed cassette (2G) loaded with copy paper.

(22) is installed, and copy paper is fed by a pair of paper feed rollers (2+).

(23) rotates or the paper is fed one by one from the manual feed tray (18). The feeding path for the fed copy paper is a pair of manual feed rollers (+9), a pair of rollers (24), (25),
It is composed of a timing roller pair (26), a conveyor belt (27), a fixing device (28), and a discharge roller pair (29).

On the other hand, the automatic document feeder (40) is connected to the copying machine main body (30).
It is removably installed on the top surface, and feeds the document placed on the tray (42) by a pair of document feed rollers (4I), and controls the rotational drive of the belt (43) in the clockwise direction to feed the document placed on the tray (42) to the document table glass. (+6), and after the image is evaluated by the optical system (10), the document is discharged onto the discharge tray (44). This automatic document feeder (40
) is installed at a predetermined position on the copying machine main body (30) and is electrically connected to the copying machine main body (30), so that it can operate in conjunction with the copying machine main body (30).

Incidentally, the copying operation of the copying machine having the above configuration and the functions of each element are well known, and the explanation thereof will be omitted.

[Key Arrangement on Operation Panel Section] Next, the arrangement of the operation keys on the operation panel section of the photo-transfer machine will be described with reference to FIG. 2.

The operation panel (70) includes a print key (71) for starting the copying operation, and a numerical display device (72) capable of displaying 4-digit numerical values, each corresponding to numerical values from 1.2° to 9.0. Numeric keys (80) to (89).

Interrupt keys (90), (95) to specify interrupt copying
.

clear strip key (91), copy paper selection key (92) for specifying the copy paper loaded in multiple stages by size, up and down keys (93) for changing and specifying copy image density step by step. ), (94) and a group of keys (10G) to (103) for setting copy magnification are arranged.

[Control Circuit] Next, the control circuit of the copying machine will be explained with reference to FIG.

(201) is a first microcomputer for controlling the copying operation, (202) is a second microcomputer for controlling the optical system, and (203) is a third microcomputer for controlling the automatic document feeder. (204) is a switch matrix, (205) is a drive circuit for a DC motor (M3) for document scanning, and (206) is a stepping motor for variable magnification (
(207) is a decoder.

The output terminals (AI) or A9) are connected to the main motor (Ml), developer motor (M2), timing roller pair (26) clutch, and upper paper feed roller (21), respectively.
Transistors (not shown) for driving and switching the clutch for the lower paper feed roller (23), the charging charter (5), the transfer charger (7), the clutch for the pair of manual feed rollers (19), and the paper jam indicator (not shown) It is connected to the.

[Processing Procedure] Here, the processing procedure by the above control circuit, particularly the interrupt processing procedure, will be explained. In the present embodiment, the waiting interrupt, which is a feature of the present invention, and the conventional immediate interrupt are used together, and the interrupt is executed in parallel. (Fl), (F2
) using interrupt flag processing (see Figure 5, Figure 8,
Figure 9 shows the modified example) and document ejection interrupt processing (Fig. 7).
(see figure).

First, FIG. 4 shows the main routine. When the power is turned on, each microcomputer is initialized in step (S1), and the keystrokes on the operation panel are processed in step (S2). Subsequently, in step (S3), a copying process based on key human power is performed, and in step (S4), an interrupt flag is processed, and the process returns to step (S2).

The interrupt flag processing uses flags (Fl) and (F2) in the processing procedure shown in FIG.

Based on the state shown in the front panel (F2), "normal", "waiting interrupt" and "immediate interrupt" are instructed.

First, in step (510) it is determined whether the interrupt key has been turned on. If it is not turned on, the determination is No, and this subroutine is terminated, and the flags (Fl) and (F2) remain initially set to "0", instructing normal copying.

When the interrupt key is turned on (first time), the step (SI
O) is determined as YES, and in step (S11) it is determined whether the flag (Fl) is rlJ. Since the flag (Fl) is initially set to UO, it is judged as NO,
In step (S I 2), it is determined whether the flag (F2) is rlJ. Since the flag (F2) is also initially set to "0", the determination is NO, and in step (S13) the flag (Fl) is set to rlJ to instruct a wait interrupt.

By the way, when the interrupt key is turned on again (second time),
YE in the steps (S I O) and (S I I)
When the flag (Fl) is reset to "0" in step (S14), the flag (F2) is set to "l".
to instruct an immediate interrupt.

Furthermore, when the interrupt key is turned on (third time), it is determined YES at step (SIO), NO at step (Sll), and YES at step (S+2), and the flag (F2) is set to " 0” and
Cancels the interrupt and instructs normal copying.

That is, the interrupt processing in FIG. 5 instructs a waiting interrupt when the interrupt key is turned on for the first time, and an immediate interrupt when the interrupt key is turned on for the second time.
The second time you turn it on, it will cancel this and return to normal.

Based on the instructions in the above processing, the automatic document feeder and the copying machine main body are controlled as shown in FIGS. 6 and 7.

FIG. 6 shows the main routine of the automatic document feeder. When the power is turned on, initial settings of the microcomputer are performed in step (S5), normal processing for document feeding is performed in step (S6), and step In (S7), interrupt processing is performed based on the states of the flags (Fl) and (F2), and the process returns to step (S6).

As shown in FIG. 7, the interrupt processing begins with step (
In step S20), it is determined whether the flag (Fri) is rlJ, and in step (S21), it is determined whether the flag (F2) is rlJ. If normal copying is instructed, the flag (Fl) is
, (F2) have been reset to "0", the determination is No in both steps (S20) and (S21), no particular interrupt processing is executed, and normal document feeding is performed in step (S6). will be carried out.

If a wait interrupt is specified, the flag (Fl) is set to rl.
Since the flag (F2) is set to rOJ and the flag (F2) is reset to rOJ, YES is determined in step (S20), and in step (S22) the optical system determines whether the final scan has been completed or not. It is determined whether or not the copying operation for the set number of continuous copies of the document being copied has been completed.

If it has not been completed, the determination is NO and copying continues. When the process is completed, the determination is YES, and the document is ejected in step (S24).

After the copying of the original being copied at that time is completed and the original is ejected from the platen glass, the original to be copied is placed on the platen glass and copied. . In this case, there is no need to return the ejected document to the document tray of the automatic document feeder.

On the other hand, if an immediate interrupt is specified, the flag (Fl)
is reset to "0" and the flag (F2) is set to "1", so the determination is NO in step (S20), YES in step (S21), and the scanning of the optical system ends in step (S23). In other words, it is determined whether the copying operation being performed at that time has been completed. If it has not been completed, the determination is NO and the copying continues, but after waiting for the completion, the determination is YES and step (
In step S24), the document is immediately ejected. Then, the original for which immediate interruption is desired is placed on the original table glass and copied.

In this case, since the ejected original has not yet been copied for the set number of continuous copies, it is necessary to return the ejected original to the original placement tray.

FIG. 8 shows a processing procedure that can be called a modification of the interrupt flag processing shown in FIG. 5, in which dedicated waiting interrupt keys and immediate interrupt keys are used as interrupt keys, respectively. Note that the flag (Fl).

The interrupt instructions based on the state of (F2) are as shown in Table 1 above.

In this subroutine, it is determined in step (S30) whether or not the wait interrupt key has been turned on, and in step (S33) it is determined whether or not the immediate interrupt key has been turned on.

If none of the keys are turned on, it will be determined as No.
End this subroutine and set the flag (FI).

(F2) remains at the initial setting rOJ and instructs normal copying.

When the wait interrupt key is turned on, it is determined as "/ES" in step (33G), and the flag (F
l) is "0" or not. The flag (Fl) is “0”
”, the determination is YES, and the flag (Fl) is set to “1” in step (S32).
Instructs waiting interrupt. By the way, the wait interrupt key is 2.
When it is turned on for the second time, the flag (Fl) has already been set to rN, so the determination in step (S31) is NO, the flag (Fl) is reset to "0" in step (336), and the wait interrupt is is canceled and normal copying is instructed.

On the other hand, when the immediate interrupt key is turned on, step (S3
3) is determined as YES, and in step (834) it is determined whether the flag (F2) is "0". Since the flag (F2) is initially set to "0", it is determined as YES,
In step (S35), a flag (F2) is set in rlJ to instruct an immediate interrupt. By the way, when the immediate interrupt key is turned on for the second time, the flag (F2) is already set to rlJ.
Since it is set to "ON" in step (S34), the flag (F2) is set to "0" in step (S36).
”, cancels the immediate interrupt, and instructs normal copying.

That is, the interrupt processing in FIG. 8 instructs each interrupt when the wait interrupt key and immediate interrupt key are turned on for the first time.
The second time you turn it on, it clears these and returns to normal.

FIG. 9 shows a processing procedure that can be considered as a modification of the interrupt flag processing shown in FIG. 5. That is, in the processing procedure shown in Figure 5, one interrupt key is used, and this key is
If you turn on the interrupt key once and instruct a waiting interrupt, you will have to turn on the interrupt key two or three times to cancel it, and when you turn it on the second time, an immediate interrupt will be instructed, even temporarily. . In this respect, the interrupt flag processing shown in FIG. 9 uses a timer and another flag (F3), thereby making it possible to cancel the waiting interrupt immediately without passing through an immediate interrupt instruction. Note that the flag (PI), (F2
) The interrupt instructions based on the condition of deafness are as shown in Table 1 above.

First, in step (S40) it is determined whether or not the interrupt key has been turned on. If it is not turned on, the determination is NO, and in step (S47) it is determined whether the flag (F3) is "1". Since the flag (F3) is initially set to "0", the determination is NO, and this subroutine is terminated, and the flags (Fl) and (F2) remain initially set to rOJ, and normal copying is instructed. do.

When the interrupt key is turned on (first time), step (S4
0), it is determined as YES, and in step (S41) it is determined whether the flag (Fl) is "eye". The flag (Fl) is N because it is initially set to rOJ.

It is determined that the flag (F2) is "
1”. Since the flag (F2) is also initially set to "0", the determination is No, and step (S4)
In step 3), the flag (Fl) is set to "1" to instruct a wait interrupt.

When the interrupt key is turned on again (second time), YES is determined in the steps (S40) and (S41), and it is determined in step (S44) whether the flag (F3) is rlJ. Since the flag (F3) remains initially set to "0", the determination is No, and the timer is started in step (S45), and the flag (F3) is set to rl'J in step (S46).

Subsequently, in step C840), No, X step (S47
) is determined as YES, and in step (S48) it is determined whether or not the timer has expired. N if not finished
It is determined as O, and after waiting for the end, it is determined as YES, and in step (S49), the flags (F I ) and (F 3 ) are set to "
0'' and sets the flag (F2) to rlJ to instruct an immediate interrupt.

By the way, if the interrupt key is turned on (third time) before the timer expires, that is, before an immediate interrupt is instructed, steps (S40) and (S41) are performed.

(S44) is determined to be YES, and step (S44) is determined to be YES.
50) and all flags (F t), (F2), (F3)
is reset to "0", that is, the waiting interrupt is canceled and normal copying is instructed.

On the other hand, after the timer expires and an immediate interrupt is instructed, turn on the interrupt key once again (3
(time). Then, in step (S40), YES
S, step (S 41 ) terN OJ, step (
YES is determined in S42), and all flags (FI) and
(F2) and (F3) are reset to "0".

That is, in this interrupt flag processing, if the interrupt key is turned on while the timer is operating, the waiting interrupt can be canceled directly without going through an immediate interrupt instruction.

[Effect 1] As is clear from the above explanation, according to the present invention, when an interrupt signal is input, after the reverse copying operation for the set number of continuous copies of the original being copied at that time is completed. Since a control function is provided for a so-called waiting interrupt, which enables interrupt copying, the document currently being copied is ejected from the platen glass after all necessary copying has been completed, instead of being ejected as before. It is possible to eliminate the complicated work of returning one or two originals to the original document placement section again for copying the remaining portion, and problems such as misplacement of originals due to the return do not occur.

Furthermore, the wait interrupt control can utilize conventional microcomputer control as is, is inexpensive, and can be used in conjunction with conventional immediate interrupts.

[Brief explanation of the drawing]

The drawings show a copying machine according to the present invention; FIG. 1 is a schematic configuration diagram of the copying machine main body and automatic document feeder, FIG. 2 is a plan view of the operation panel, FIG. 3 is a block diagram of the control circuit, and FIG. 4 to 9 are flowcharts showing the control processing procedure. (30)...Copier main body, (40)...Auto document feeder, (90), (95)...Interrupt key, (20)...
1), (202), (203)...Microcomputer, (204)...Switch Madrisk. Patent Applicant Minolta Camera Co., Ltd. Agent Patent Attorney Two idiots, Figure 6, Figure 81! I

Claims (1)

[Claims] 1. The apparatus is characterized by comprising a control means that enables interrupt copying after the copying operation for the set number of continuous copies of the document being copied at that time is completed when a copying interrupt signal is input. copy machine.