JPS6041567Y2 - Double-sided copy processing device in a copying machine - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a double-sided copy processing device for a copying machine.

Conventionally, some copying machines of this type are capable of setting a double-sided copy mode and the number of consecutive copies.

However, the double-sided copy function is only effective when there is a one-to-one correspondence between the front side copy and the back side copy.

That is, this is effective in a case where n□ front side copies are made of original A, and 01 back side copies of original B are made on the back side.

However, when looking at the case where a double-sided copy of a copy document is required, the front side copy is from original A and the back side copy is from original B, n0 sheets, the front side copy is from original A, the back side copy is from original C, n2 sheets, There are cases where it is necessary to copy a document in which the front side is copied from the same original A, and the back side is copied using different originals B, C, and D, such as when the front side is copied by original A and the back side is copied by original.

In such a case, with the conventional method, first make n□ front side copies of original A according to the number of back side copies of original B, then make back side copies of original B for these n1 sheets, and then create originals A and B. Create a copy of the original document, then make new front side copies of original A according to the number of back side copies required for original C, make back side copies of original C for these two pages, and make copies using originals A and C. This involves taking a document and making copies of originals A and D in the same way. Even if the front side copy is of the same original A, the back side copy of originals B, C, and D is made.
This must be set every time the value changes.

Another method is to make (nl + 12 + n3) front side copies of original A from the beginning and eject the paper into the tray for double-sided copying, but in this case, the front side copies are This copy document is removed from the paper tray for double-sided copying, set back on the normal paper feed tray, clears the double-sided copy mode, and prints each document B.

A predetermined number of backside copies of C and D must be made in the same way as normal copies, and the process of double-sided copying is also troublesome.

This idea was created in consideration of the above points, and can be used not only when there is a one-to-one correspondence between the front side copy and the back side copy, but also when the front side copy of the same original requires a back side copy of a different original. Even if you only need to set the original for front-side copying once, there is no need to take out the paper output tray for double-sided copying from the tray, and the copying machine has good processing performance for double-sided copying. The object of the present invention is to obtain a double-sided copy processing device in the present invention.

An embodiment of this invention will be described based on the drawings.

First, reference numeral 1 denotes a photoreceptor drum that rotates in one direction, and a transfer charger 2 is provided in a transfer section opposite to this photoreceptor drum 1.

A registration roller 3 and a conveyance belt 4 are provided near the transfer charger 2.

Further, on the paper feeding side with respect to the transfer charger 2 side, a paper feeding table 6 on which copy paper 5 is placed and a paper feeding roller 7 for feeding the copy paper 5 are provided.

Further, on the paper discharge side from the transfer charger 2 side, a fixing roller 8 and a pressure roller 9 which are in pressure contact are provided, and a plate 10 is provided as a paper discharge receiver.

A tray 11 is provided at the bottom of the tray 10 for receiving the copy paper 5 whose front side has been copied in the duplex copy mode. A paper feed roller 12 is provided for feeding the upper copy paper 5 again.

Further, the paper discharge tray is provided with a switching claw 13 on the front side of the tray 10 for switching the discharge of the copy paper 5 to the tray 10 for this paper discharge tray or to the tray 11 for the double-sided copy paper discharge tray. .

Further, the paper discharge tray for double-sided copying is provided with a sheet number detection element 14 near the plate 11 for detecting the number of remaining copy sheets 5 on the tray 11 of the paper discharge tray for double-sided copying.

There is a duplex copy mode setting section 1 on the operation panel of the copying machine.
5, a continuous copy number setting section 16, and a copy number setting section 17 for backside copying.

In FIG. 1, reference numeral 18 indicates a transport route for front-side copying, and 19 indicates a transport route for back-side copying.

Moreover, FIG. 2 shows the control system, in which RO is controlled by system controller 21 for CPU 20.
M22 and RAM23 are provided, and an input/output port 24 is also provided.

Then, the key matrix circuit 25 for the CPU 2G
A key display control section 26 to which is connected is provided.

Further, a display device 29 is provided to the key display control section 26 via a driver 27 and a decoder/driver segment 28.

In such a bark, the double-sided copy mode setting section 15
Therefore, when the double-sided copy mode is not set, normal one-sided copying is performed.

That is, the copy paper 5 fed from the paper feed table 6 by the paper feed roller 7 is conveyed to the transfer section by the registration roller 3 while being synchronized with the image on the photoreceptor drum 1, passes through the fixing section, and is transferred to the paper ejection tray 10. Paper is ejected on top.

In this case, repeat copying is performed by setting a predetermined number of copies by the continuous copy number setting section 16.

When it is desired to perform double-sided copying, the double-sided copy mode setting section 15 sets the mode to double-sided copy mode.

Here, it is assumed that the required copy documents require 01 sheets for the front side copy of the original A and the back side copy of the original B, and 01 sheets for the front side copy of the original A and the back side copy of the original C.

Therefore, the continuous copy number setting unit 16 sets the requested number of copies to (n□10n2).

Then, when the original A is set on the original table and the copy button is pressed, (n□+n2) copies of the copy paper 5 on which the front side copy of the original A has been made are obtained.

Here, until the ejection of these (n, +n2) sheets of copy paper 5 is completed, the control system shown in FIG. Since the copy paper 5 has been switched to be ejected, the (ni + r12) sheets of copy paper 5 on which only front side copies have been made are ejected from the paper receiver for double-sided copying to the tray 11, and one front side copying process is completed.

In this way, when the front side copy is completed, the back side copy waiting state is entered.

Therefore, original B is set in place of original A on the document table, and the requested number of copies is set by the copy number setting section 17 to n Set to .

Then, when copying starts, the paper feed roller 12 operates in place of the paper feed roller 7 under control, and the copy paper 10 that had been ejected onto the tray 11 is fed to the paper ejection tray for double-sided copying.
The back side of the copy paper 10 is copied using the original B.

This back side copying is performed for n□ sheets set by the copy number setting unit 17.

At this time, since the switching knob 13 is switched to the normal copying position by the control system, the copy paper 5 on which the reverse side has been copied is discharged to the tray 10 from the paper discharge tray.

As a result, on the plate 10 of this paper ejection tray, one double-sided copy document n, in which the front side copy of the original A and the back side copy of the original B are made, is obtained.

In this way, when the double-sided copying of originals A and B is completed, the paper output tray for double-sided copying leaves a sheet of copy paper 5 on which only the front side copy is to be made on the plate 11.
The remaining number of sheets is detected by the sheet number detection element 14 and inputted to the control system, and the remaining number of sheets is displayed on the display device 29.

Therefore, the document C is set on the document table, and the requested number of copies is set to 1 by the copy number setting section 17.

Then, when the copy start key is pressed, the back side copy of the original C is performed on this sheet of copy paper 5 in the same manner as the back side copy of the original B, and the paper ejection tray is placed on the plate 10.
Paper is ejected on top.

As a result, double-sided copies of documents A and C can be obtained.

In this way, if you need to copy the back side of different originals B and C for the front side copy of the same original A, set the original A for the front side copy only once for the first time. The paper output tray for double-sided copying of documents is plate 1.
It can be carried out as is without having to take it out from the paper feed tray 6 and set it again on the paper feed table 6, and the processing efficiency for double-sided copying is good.

Incidentally, the process in the tray 11 of the paper discharge tray for double-sided copying is shown in a flowchart as shown in FIG.

Further, when there is a one-to-one correspondence between the front side copy and the back side copy, the number of sheets set by the number of copies per sheet setting unit 17 may be made to correspond to the number of sheets set by the number of consecutive copies per sheet setting unit 16.

Further, in this embodiment, the back side copy was explained using two types of originals B and C, but any number of types may be used, and this allows double-sided copying in which back side copies are made of various types of originals compared to front side copies of the same original. Documents can be easily edited.

Since this invention is configured as described above, it is possible to
Even if you need to copy the back side of a different original for the front side copy of the same original, set the original for the front side copy only once. The paper receiver does not need to be removed from the tray and can be used as it is, which has the effect of improving the processing performance of double-sided copying.

[Brief explanation of drawings]

The drawings show one embodiment of this invention, with FIG. 1 being a schematic diagram of the mechanism, FIG. 2 being a block diagram of the control system, and FIG. 3 being a flowchart. 5...Copy paper, 11...Dish paper tray for double-sided copying, 17...Number of copies per copy setting section, 2
9...Display device.

Claims (1)

[Scope of utility model registration request] In a copying machine that can set the duplex copy mode and the number of consecutive copies, the duplex copy output tray from which copy paper with front-side copies for the number of continuous copies set when the duplex copy mode is set has a plate. The paper output tray for double-sided copying is provided with a copy number setting section for back side copying that can set an arbitrary number of continuous copies for the number of copies of the copy paper discharged onto the tray, and also has a copy number setting section for back side copying. After the set number of back side copies have been completed by the department, the paper output tray for double-sided copying is equipped with a display device that detects and displays the number of remaining copies of the front side copy paper remaining on the plate, and the remaining copy paper is A double-sided copy processing device for a copying machine, characterized in that a new number of consecutive copies is set by the copy number setting section to perform back-side copying that is different from the previous back-side copy.