JPH03212637A - Copying machine provided with automatic document feeding device - Google Patents

Abstract

PURPOSE:To eliminate the waste of a copying paper and to shorten copying time by inhibiting a copying action for the rear of the last document which is blank in both-side document/one-side copying mode when information that the rear of the last document is in a blank state is inputted. CONSTITUTION:The both-side document/one-side copying mode is set and the information that the rear of the last document is in the blank state is inputted, then a copying key is depressed. Thus, the documents where images exist on both sides placed on a document platen 41 are automatically set one by one on a contact glass 2, a belt-like photosensitive body 5 is exposed to reflected light from the document, and development is performed, then an obtained toner image is transferred on a paper by a transfer charge 9. After performing copying processing for the set number of papers, the document is inverted and the copying processing of the image on the rear is performed. The processing is repeated, and the copying processing completed based on the above information without performing the copying processing of the rear of the last document.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a copying machine equipped with an automatic document feeder.

[Conventional technology]

Some copiers equipped with an automatic document feeder are equipped with a double-sided original/single-sided copy mode as a copy mode for double-sided originals, and when this mode is used, the automatic document feeder's The machine automatically feeds the double-sided image originals set on the document table one by one, places each sheet in a designated position on the contact glass, copies the image on the front side onto one side of the paper, and then flips the original over. You can then set it back in place and copy the image on the back side onto one side of the next sheet.

[Problem to be solved by the invention]

However, in such conventional copying machines, when copying a double-sided original using the double-sided original/single-sided copy mode, even if the back side of the final original set on the original abutment of the automatic document feeder is blank, , a copy operation was performed on the back side.

Therefore, there is a problem that not only is paper wasted, but the overall copying time is increased by the time required for the copying operation.

This invention has been made in view of the above points, and an object of the present invention is to prevent a copy operation from being performed on the back side of the final original when the back side of the final original is blank in double-sided original/single-sided copy mode. do.

[Means to solve the problem]

In order to achieve the above object, the present invention provides a copying machine with an automatic document feeder equipped with the above-mentioned double-sided original/single-sided copy mode setting means A, as shown in the functional block diagram in FIG. The copy mode is set by the final document back side information input means B, which inputs information as to whether the back side of the final document set on the document table of the automatic document feeder is blank, and the double-sided document/single-sided copy mode setting means A. At the same time, when information indicating that the back side of the final original is blank is inputted by the final original back side information input means B, a final copy operation prohibition means C is provided for prohibiting a copy operation on the back side of the final original. It is something that

[For production]

According to the copying machine with the automatic document feeder configured as described above, when the back side of the final document set on the document table of the automatic document feeder is blank, the final document back side information input means B inputs information indicating that the back side of the final document is blank. By inputting this information in advance, when a copy operation is performed in the copy mode by the double-sided original/single-sided copy mode setting means A, the final copy operation prohibition means C will prohibit the copy operation on the back side of the final original. Since paper is not wasted and the time required for the copying operation is reduced, the overall copying time is shortened.

Therefore, a highly productive and highly economical device can be provided.

〔Example〕

Hereinafter, embodiments of the present invention will be specifically described with reference to FIG. 2 and subsequent figures.

FIG. 2 is an overall configuration diagram showing an example of a copying machine embodying the present invention.

This copying machine includes a copying machine main body 1 and an automatic document feeder W (hereinafter abbreviated as rADFJ) 40.

The copying operation of this copying machine is controlled by selecting the duplex copy mode and the number of sheets to be set from the operation section provided on the copying machine main body 1.

The process is started by setting the necessary copy mode (copy conditions) such as copy density, binding margin size, and magnification ratio, and pressing the copy start key.

Here, the ADF 4Q is provided with a document table 41, and the document placed on this document table 41 is transferred to the document feed belt 4.
2, and is conveyed onto the contact glass 2 through a document conveyance path 43.

When the document is conveyed over the contact glass 21 and set in a predetermined position, the xenon lamp 3 emits light and the reflecting mirror 3a
The entire surface of the document is irradiated with light for a predetermined period of time.

The reflected light from the original passes through the first mirror 4at, the through lens 4b, and the second mirror 4C, which constitute the copying optical system, and exposes the belt photoreceptor 5.

The belt photoreceptor 5 is uniformly charged in advance by a charger 6, and an electrostatic latent image is formed by exposure. This electrostatic latent image on the belt photoreceptor 5 is developed by a developing unit 8 after the charges of unnecessary portions are removed by an eraser 7 .

The developed toner image is transferred to a transfer charger 9 at a transfer section.
is transferred to paper by

The paper is fed from either paper feed tray 10a, 10b, 10C9 or duplex tray 10d, and
1, and is sent to the transfer section by registration rollers 12 in synchronization with the toner image. The paper after the transfer is sent to the fixing unit 14 by the conveyor belt 13 and is fixed thereon, and after the fixing, the paper is discharged to the discharge tray 15.

The original on the contact glass 2 is sent out by the original transport belt 44 after light irradiation (exposure) is completed, and returned to the original table 41 by the original discharge roller 45.

Further, the charge and toner remaining on the belt photoreceptor 5 are removed by a cleaning unit 16, and the belt photoreceptor 5 is again charged with a charge by the charger 6 and exposed.

On the other hand, when the double-sided original/single-sided copy mode is set among the various copy modes, the above-mentioned copying is performed on the front side of the original that is fed from the original table 41 and set at a predetermined position on the contact glass 2. After the operation is performed and the image on the front side is copied onto one side of the paper, the paper is ejected as it is to the ejection tray 15, and the original on the contact glass 2 is inverted by a reversing mechanism (not shown) and then reprinted. The paper is placed in a predetermined position on the contact glass 2, and a copy operation is performed on the back side of the paper. After the image on the back side is copied onto one side of the next paper, the paper is ejected to the ejection tray 15. It is papered.

When the copy operation for both sides of the document is completed, the document is returned to the document table 41, and when the next document is fed from the document table 41 onto the contact glass 2, the above-described copy operation is performed again. be done.

Furthermore, when the single-sided original/double-sided copy mode is set, a copy operation is performed on the original with a single-sided image fed from the document table 41 and set at a predetermined position on the contact glass 2, and the image is After copying on one side of the paper, the direction of the paper is switched by a switching claw (not shown) and sent to the double-sided tray 10d, and the original on the contact glass 2 is returned to the original platen 41, and the next original is placed on the original platen. The paper is fed from 41 onto the contact glass 2.

When the next document is fed, the paper stored in the duplex tray 10cl is also reversed and fed, and a copy operation is performed on the document set at a predetermined position on the contact glass 2. The image is copied to the other side of the paper from duplex tray 10d, and then the paper is transferred to output tray 1.
At the same time, the document on the contact glass 2 is also returned to the document table 41.

After that, the next original is transferred from the original table 41 to the contact glass 2.
When the paper is fed upward, the above-described copying operation is performed again.

FIG. 3 is a system configuration diagram of this embodiment.

50 is a main control unit, which includes a microcomputer (hereinafter referred to as "CPUJ") 51 that controls the copying machine main body 1, a ROM 52 that stores fixed data such as program data for operating the CPU 51, and various data. The CPU 51, a copy processing section 60, a copy processing section 61, and an operation section 62 are provided with an interface l1054.

The copying process section 60 controls the copying operation based on data from the CPU 51, that is, the aforementioned process control of charging, exposure, development, and fixing.

The copy processing section 61 executes processing in various modes such as a variable magnification mode, paper selection mode, and duplex mode based on data from the CPU 51.

The operation unit 62 includes a numeric keypad 71 . shown in FIG. 4 . Copy start key 72. An input section 63 consisting of an enter key 732, an interrupt key 74, a touch panel (not shown), etc. on a liquid crystal display (LCD) 75, and a liquid crystal display that displays each screen such as the normal copy mode screen, emergency screen, or user tool screen. It is composed of a display section 64 including a container 75.

The liquid crystal display 75 includes a touch panel with a large number of built-in touch sensors (for example, one for each 8×8 display pixel) within the display area, and when the power is turned on, a copy screen as shown in FIG. 5 is displayed. Display the mode screen.

If you touch a desired display while this screen is displayed, the display content will be selected and black and white will be inverted.

Next, the operation of this embodiment configured as described above will be specifically explained with reference to FIG. 6 and subsequent figures.

FIG. 6 is a flowchart showing data processing in the double-sided original/single-sided copy mode by the CPU 51 of FIG.

This routine starts when called from the main routine (not shown), and first detects whether or not the automatic document feeding mode is in effect, that is, whether or not a document is set on the document table 41 in FIG. 2 from a document detection sensor (not shown). It is determined based on the output signal of , and if the mode is not automatic document feeding mode, the process directly returns to the main routine.

Furthermore, if the automatic document feeding mode is selected, it is determined whether the copy mode is double-sided document/single-sided copy mode. That is,
On the copy mode screen shown in FIG. 5 displayed on the liquid crystal display 75 shown in FIG. 4, it is determined whether or not the "both → one" display section 80 is touched.

If the mode is not double-sided original/single-sided copy mode, the process returns to the main routine, and if the mode is double-sided original/single-sided copy mode, when the copy start key 72 shown in FIG. 4 is pressed, the copy mode screen shown in FIG. The left half is switched to the final document back side information input screen as shown in FIG.

Next, in response to the question "Is the back side of the double-sided last document blank?" displayed on the screen, it is determined whether or not the rYesJ display section 81 is touched, and if the rYesJ display section 81 is not touched, the , then rNoJ display section 82
This rNoJ display section 8 determines whether or not has been touched.
If neither 2 is touched, the routine returns to the judgment as to whether or not the rYesJ display section 81 has been touched, and this routine is cycled to wait for the rYesJ display section 81 or the rNoJ display section 82 to be touched.

After that, when the r N o J display section 82 is touched,
Check whether the set number of copies has been reached (which can be set using the numeric keypad 71 when the copy mode screen in Figure 5 is displayed; for example, if you enter 10, "Set 10" will be displayed as shown in Figure 7). However, since the number of copies itself is still "0" at first, it is then determined whether the original fed from the original platen 41 is the last original.

Then, if it is not the last original, a front side copying process is executed, that is, when the original is set at a predetermined position on the contact glass 2, a copying operation is performed on the front side of the original to copy the image onto one side of the paper.

Next, the back side of the original copy process is executed, that is, when the original is reversed and placed in a predetermined position on the contact glass 2 again, the image is copied onto one side of the next sheet by performing a copying operation on the back side. After that, it is determined whether the next fed document is the last document.

If it is not the last original, the process proceeds to the original front side copying process and repeats the above process, but if it is the last original, the process returns to determining whether the set number of copies has been reached, and if the set number has not been reached, the process is repeated again as the last original. The process proceeds to a determination as to whether or not the copy has been made, repeats the above-mentioned processing, and returns to the main routine when the set number of copies is reached.

Therefore, if the set number of copies is n and the number of original sheets is N, then n copies of 2×N single-sided copy sheets will be produced as shown in FIG.

On the other hand, when the rYesJ display section 81 is touched in response to the question "Is the back side of the double-sided last document blank?" in FIG. 7, it is determined whether the set number of copies has been reached. has not reached the set number of copies, so the document platen 41
It is determined whether the fed document is the last document.

If it is not the last original, the front side copy process and the back side copy process are sequentially performed, and then it is determined whether the next fed document is the last original, and if it is not the last original, the front side copy process and the back side copy process are performed. Perform backside copy processing.

If it is the last original, only the front side of the original is copied and the process returns to determining whether the set number of copies has been reached. If the set number of copies has not been reached, the process returns to determining whether it is the last original and repeats the above process. , when the set number of copies is reached, the process returns to the main routine.

Therefore, if the set number of copies is n and the number of original sheets is N, then n copies of 2XN-1 single-sided copy sheets will be produced as shown in FIG.

As described above, according to this embodiment, when the back side of the final document set on the document table 41 of the ADF 40 is blank,
If the information that the back side of the final original is blank is entered on the final original back side information input screen in Figure 7 during double-sided original/single-sided copy mode, the copy operation will be performed in double-sided original/single-sided copy mode. In this case, since the copying operation on the back side of the final original is prohibited, paper is not wasted, and the time required for the copying operation is reduced, so that the overall copying time is shortened.

Therefore, a highly productive and highly economical device can be provided.

〔Effect of the invention〕

As explained above, according to the copying machine with an automatic document feeder according to the present invention, when the back side of the final document set on the document table of the automatic document feeder is blank, the final document back side information input means If such information is entered in advance, when a copy operation is performed in the copy mode using the double-sided original/single-sided copy mode setting means, the final copy operation prohibition means will prohibit copying on the back side of the final original. Since paper is not wasted and the time required for the copying operation is reduced, the overall copying time is shortened.

[Brief explanation of drawings]

Figure 1 is a functional block diagram showing the basic configuration of this invention, Figure 2 is an overall configuration diagram showing an example of a copying machine implementing this invention, Figure 3 is a system configuration diagram thereof, and Figure 4 is also a diagram of its system configuration. A layout diagram showing an example of the configuration of the operation section, Figure 5 is a diagram showing an example of the copy mode screen displayed on the LCD, and Figure 6 is a diagram showing an example of the copy mode screen displayed on the LCD in Figure 3. Flowchart showing data processing; FIG. 7 is a diagram showing an example of a screen that combines the information input screen for the back side of the final document and the copy mode screen in the double-sided original/single-sided copy mode displayed on the liquid crystal display in FIG. 4. , FIG. 8 is an explanatory diagram of the operation of this embodiment. 1... Copying machine main body 2... Contact glass 40... Automatic document feeder (ADF) 41... Original table 50... Main control section 51... Microcomputer (CPU) 52...・ROM
53...RAM60...Copy process section
61...Copy processing section 62...Operation section
63... Input section 64... Display section 71.
...Numeric keypad 72...Copy start key 75...Liquid crystal display Figure 1

Claims (1)

[Scope of Claims] 1. Automatically feeds documents with double-sided images set on the document table of an automatic document feeder one by one, sets each sheet at a predetermined position on the contact glass, and transfers the image on the front side to the paper. An automatic original equipped with a double-sided original/single-sided copy mode setting means that sets a mode for copying onto one side of the next sheet, then reversing the original and setting it again in the predetermined position, and copying the image on the back side onto one side of the next sheet. In a copying machine with a feeding device, a final original back side information input means for inputting information as to whether the back side of the final original set on the original table is blank, and a copy mode by the double-sided original/single-sided copy mode setting means. is set, and when information indicating that the back side of the final original is blank is input by the final original back side information input means, a final copy operation prohibition for prohibiting a copy operation on the back side of the final original is set. 1. A copying machine with an automatic document feeding device, characterized in that a copying machine is provided with means.