JPH01236860A - Copying machine with automatic original feeder - Google Patents

Abstract

PURPOSE:To attain the use of the copying machine independently of the time of copying and facsimile transmission by leading an original stacked on a paper feeder section to a read position when the copying mode is selected and leading an original stacked in the opposite direction to that in the copying mode on the paper feeder section to a read position via the reversing section when the facsimile mode is selected. CONSTITUTION:With the copying mode selected, the original to be fed is reversed by a separation roll 30 and sent onto a contact glass 1a by driving a carrier belt 23. Moreover, in case of transmissing the original with the facsimile mode selected, the original is fed to the reversing section 24 by keeping the drive of the carrier belt 23 and lowering the moving stopper 32 downward. Then a changeover claw 34 in the reversing section 24 closed a discharge path and opens the return path to the read position, thereby leading the original to the read position in a way that its transmission face is opposed to the contact glass 1a. Thus, the facsimile equipment is used without any hinderance even in the facsimile mode even with the provision of an optimum automatic original feeder when the copying mode is selected.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention feeds a stack of originals placed in a paper feed section one by one from either the top or bottom sheet to a reading position of a copying machine, The present invention also relates to a copying machine with an automatic document feeder, which inverts a document fed to a reading position via a reversing section and guides the back side of the document to the reading position again.

A copying machine equipped with an automatic document feeder of the above type is well known, and the automatic document feeder is equipped with a reversing device in order to be able to automatically copy double-sided documents. There is.

As a result, the back side of the document whose first side has been read can be guided to the reading section again.

By the way, copy machines have a machine that allows you to check the copy status, etc.
Most printers eject copies with the copy side facing up.

Therefore, when copying originals arranged in pages using the above-mentioned automatic document feeder, if the pages are copied in descending order, the ejected copies will have the largest pages on top (see Figure 5). (see ). For this reason, it is necessary to rearrange the obtained copies, so automatic document feeders usually feed and copy pages in descending order of size (see FIG. 5(b)).

By the way, so-called digital copying machines that combine a reading device and a laser printer are known. Although there has never been an example of this type of copying machine, it is possible to use it as a facsimile by installing a modem. If a copying machine is equipped with a facsimile function, a problem arises in that the above-mentioned automatic document feeding device that feeds original documents is not suitable for use as a facsimile. In other words, in the case of facsimile, a cover sheet is often sent informing the receiver of the sender, the number of sheets to be sent, and the addressee in advance.If sent in the same way as a copy machine, there is a problem that the cover letter will be sent last. . Moreover, the receiver side of the facsimile normally ejects the paper from the back side, and for this reason, (d) in Figure 5
As shown in the figure, the receiving side does not become a page type. Therefore, in the case of facsimiles, it is preferable that the automatic document feeder feeds pages in ascending order as shown in FIG. Until now, there has been no such thing.

SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned problems and to provide a copying machine with an automatic document feeder that can be used for both copying and facsimile transmission.

To achieve this purpose, the present invention provides that the copying machine itself has a facsimile function, and when the copy mode is selected, the document placed in the paper feed section in a predetermined orientation is guided to the reading position, and the facsimile mode is selected. This was achieved by guiding the document placed in the paper feed section in the opposite direction to the copy mode to the reading position via the reversing section.

Embodiments of the present invention will be described below with reference to the accompanying drawings.

In FIG. 1, 1 is a copying machine, and 2 is an automatic document feeding device provided on the contact glass la thereof. The copying machine 1 is a digital copying machine, and is composed of an image reading section 3 and an image recording section 4 serving as a laser printer, and also has a facsimile function by providing a modem (not shown).

The image reading unit 3 includes a light source 5, a mirror 6, a roof mirror 7, an imaging lens 8, and a CCD 9, and by moving the light source 5° mirror 6 and the roof mirror 7 in the direction of the arrow, the image of the original is formed on the CCD 9. Convert to electrical signal.

The image recording unit 4 also includes means for emitting laser light modulated with image information (not shown), a polygon mirror 10,
an optical writing unit having an fθ lens 11 and a mirror 12; and a photoreceptor 13. electrification charger 14, development unit 15, transfer/separation charger 16, cleaning unit 17,
It includes a paper feeding device 18, a fixing device 19, and a copying section having a paper discharge tray 20.

The copying machine 1 having such a configuration has a changeover switch SW shown in FIG.
2 allows you to select either a copying machine or a facsimile machine. When used as a copying machine, select a copy mode. At this time, an image is written on the photoreceptor 13 using laser light from the original image formed on the CCD 9. Also,
When the facsimile mode is selected, that is, when a document is to be transmitted by facsimile, the image reading section 3 is activated and the document image formed on the CCD 9 is transmitted. Note that the image recording section 4 operates when receiving as a facsimile.

The automatic document feeder includes a document table 21, a paper feed section 2
2. A conveyor belt 231, a reversing section 24, and a document receiver 25 are provided. This automatic document feeder operates in the copy mode and facsimile mode as described below. Incidentally, FIG. 4 is a flow chart for controlling the operation of the automatic document feeder, and the explanation will be made with reference to the same figure.

In Figure 4, when the copy mode is selected using the SWI, the message ``Please set original cloth'' appears as shown by the solid line in Figure 3. ” will appear at an appropriate location on the automatic document feeder. Then, place the document face up on the document table 21.
When the original is placed on the original and inserted until it lightly touches the original, the original set detection 26 detects the original and indicates that the original has been set.

When the start key SW1 of the copying machine 1 shown in FIG. 2 is pressed, the pinch roller 27 and the calling roller 28 come into contact with each other, and when the conveyance motor (not shown) is then turned on, the document is fed. When a large number of originals are fed, the separation belt 29 and the separation roller 30 work together to feed only the original that is in contact with the separation roller 30, that is, the last page of the original. The fed document is reversed by the separation rollers 30 and placed in the register.
The document passes through the document width detection 31 and is sent onto the contact glass 1a by the conveyance belt 23. Immediately after the document hits the movable stop claw 32, the conveyance belt 23 stops running, and the document is positioned at the reading position, where it is image exposed.

Thus, the copying operation is completed. At this time, if there is a next page on the document table 21, a document replacement signal is transmitted.

In response to this signal, feeding of the next page is started, and by lowering the movable stopper (-32), the original is ejected onto the original receiver 25 via the reversing section 24 having reversing rollers 33 and switching pawls 34. Also, if there is no next page,
Only the copied original is ejected.

Next, select the facsimile mode and, when sending, "Please place the original on the back" as shown by the dotted line in Figure 3.
is displayed and "Please set cost list" disappears. Then, in the same manner as described above, the first page of the original that comes into contact with the separation roller 30 is sent to the conveyor belt 23, but the back side of the original that is to be sent faces the contact glass 1a.

Therefore, this document is sent to the reversing section 24 by continuing to run the conveyor belt 23 and lowering the movable stopper 32. Then, in the reversing section 24, the switching claw 3
By closing the discharge port 4 in advance and opening the return path 35 to the reading position, the original can be guided to the reading position so that its transmission surface faces the contact glass 1a.

In this way, the original guided to the reading position is image exposed and transmitted. After transmission, if there is a next page, it is reversed, guided to the reading position, and transmitted in the same manner as described above.

As mentioned above, by sending data from the last page in the copy mode and from the first page in the facsimile mode via the reversing section, the results shown in FIGS. 5(a) and (b)
can be applied to each. In the embodiment shown in FIG. 2, if the image recording section 4 is provided with a reversing device for double-sided recording, the received recording paper can be ejected from the back side.

Although preferred embodiments of the present invention have been described above, the present invention is not limited to the above embodiments and can be modified in various ways. For example, in the above embodiment, the automatic document feeder reverses the document set on the document table and sends it to the conveyor belt along separation rollers, but the document is not reversed starting from the topmost document set on the document table. It can also be applied to a copying machine equipped with an automatic document feeder that transports original documents.

In this case, in the copy mode, the message ``Please set the original back page'' is displayed, and in the facsimile mode, the message ``Please set the original display'' is displayed.

The present invention is constructed as described above, and even if a copying machine equipped with a facsimile function is equipped with an automatic document feeder that is optimal when selecting a copy mode, it can be used without any problem in the facsimile mode.

[Brief explanation of the drawing]

FIG. 1 is an overall view showing one embodiment of the present invention, FIG. 2 is a plan view of the printing section, FIG. 3 is an explanatory diagram of the display section of the automatic document feeder, and FIG. 4 is an illustration of the display section of the automatic document feeder. Flowchart 1 showing control.
FIGS. 5(a) and 5(b) are explanatory diagrams showing an example of feeding by the automatic document feeding apparatus during copying, and FIG. 5(d) during facsimile communication. 1... Copy machine 2... Automatic document feeder 24... Reversing section

Claims (1)

[Claims] The stack of originals placed in the paper feed section is fed one by one from either the top or bottom sheet to the reading position of the copying machine, and the originals fed to the reading position are passed through the reversing section. In a copying machine equipped with an automatic document feeder that reverses the document and guides the back side to the reading position, the copying machine itself has a facsimile function, and when the copy mode is selected, the document is placed in the feed unit in a predetermined orientation. The above-mentioned apparatus is characterized in that when a facsimile mode is selected, a document placed on a paper feed section in a direction opposite to that in a copying mode is guided to a reading position via the reversing section. Automatic document feeding/feeding copier.