JPS6052842A - Device for detecting and controlling automatically size of original - Google Patents

Abstract

PURPOSE:To reduce the operator's burden by detecting automatically the size of an original and setting automatically the rest when either the size of paper or copying magnification is preferentially inputted and set to the device. CONSTITUTION:A cover 6 of a copying machine having an open/shut type platen cover is held locked by an electromagnet 17 when the operator sets an original to the machine and closes said cover. Then sensors 1-5 detect the information on the original. When the original is set, the size and set direction of the original are discriminated by the combination of the on-off states of the sensors 1-5 and the size of the copying paper that can be copied is displayed on a display device 15 and the magnification at which copying can be made is displayed on a display device 16 in accordance with the information on the original. The operator assigns the size of the paper by a button 12 for selecting the size of paper in the case of paper size priority. The operator selects and assigns the size among the paper sizes displayed on the display device 15 for paper size in such a case. The operator assigns a magnification by a button 13 for selecting magnification in the case of magnification priority. The operator selects and assigns the magnification among the magnifications displayed in a display device 16 for magnification in such a case. Copying is accomplished when a start button 10 is operated when the initial setting of the copying machine is completed.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to automatic detection of document size Z and control based on the automatic detection of document size Z in a copying machine having a single Latin cover that can be opened and closed.

Prior Art Conventionally, if you want to change the size of the copy m paper along with the image size in accordance with the original size, you set the required 141 paper size I had to calculate the reduction ratio from the ratio and input the settings.

Also, if you want to give priority to the image reduction ratio when copying, you must set the image reduction ratio, calculate the paper size Z from the reduction ratio, and input the appropriate paper size. Ta.

Apart from special usage, the operator had to go through the complicated process of setting 111 paper size, greeting magnification, and Z as a priority, and inputting settings based on calculations on the other hand. .

As a result, it often happens that the desired copy cannot be obtained due to a calculation error.

OBJECTS OF THE INVENTION The present invention relates to the invention of an automatic document size detection control device by Fukukei which overcomes the above-mentioned drawbacks Z, and its purpose is to:
By automatically detecting the original front size Z, if either paper size or copying magnification Z is given priority in the input settings, the other will be automatically set, reducing the burden on the operator. It is in the point of providing.

Structure of the present invention! OA□, A2 explained based on Figure 1
. . -1Aj is a sensor, which is appropriately placed on the platen cover and detects document f# information such as document size and document setting direction when the platen cover I-1 is closed.

Reference numeral B denotes document information determining means for determining document information based on signals from the recovery number sensors A1, A, . . . , Aj.

D is a paper size input means for inputting the size of the copy paper; D is a magnification determination means for determining the copying magnification based on the information from the paper size input means C and the original information determination means B; is a magnification setting means for setting the magnification of the copying machine based on the magnification determined by the same means.

F is a magnification input means for inputting the reproduction magnification when the copy magnification is given priority over the paper size, and G is the size of the copy paper based on the information from the same magnification input means 1° and the original information determining means B. and paper information determining means for determining the setting direction Z, and H is the paper information determining means for determining the setting direction Z.
IJ! This tray selection means selects the 144 paper tray to be used based on the information.

Since the present invention is configured as described above, if either the paper size or the reproduction magnification is given priority as an input setting, the other settings are automatically made.

EXAMPLE An example of the present invention illustrated in FIGS. 2 and 5 will be described below.

FIG. 2 is an external view of a copying machine with an opening/closing platen cover. In the figure, reference numerals 1 to 5 are reflective photosensors, which are arranged on a platen cover 6. As shown in FIG. 7 is a platen glass, on which the original 8 is placed and exposed.

There is an operation panel 9 on the front side of the copying machine, and on the operation panel there are a start button 10, an auto/manual switch button II,
) Various buttons such as a fig size selection button 12 and a magnification selection button 13, a display device 14 that performs operation procedures, and a display device 14 that displays the selected paper size, and a paper size display 15 that displays the selected paper size and the magnification that can be specified. A magnification display 16 is arranged.

Also, the electromagnet 1 that constitutes the automatic opening mechanism of the platen cover.
7 and the iron piece 8 facing it are respectively attached to the periphery of the platen glass side and the platen cover, and are locked when the platen cover is closed, and when the lock is released when the lock is released. The platen cover 7 can be opened automatically by a counterbalance (not shown).

FIG. 3 is a diagram showing the arrangement of a photosensor located on the platen cover 1 for detecting the document size Σ and the setting direction.

The figure shows the position where the sensor is placed on the platen glass when the platen force burn is closed, and also shows various document sizes when the edge 7 of the document is aligned in the lower left corner.

The dotted line indicates the size Z of B5 and 34 editions, and the dashed line indicates A4
The two-dot chain line indicates the size of the A3 version.

There are four sizes of manuscripts used: B5, A4, E4, and A3, but for A size, there are two in each setting direction, and the leading edge in the copying direction (leftward in Figure 3) Short one (SEF:SAOγt EdgeF
eecL) and long ones (L E F: Long E
There are two types: dgeFeed).

Therefore, even when no original is set, there are 7J11 and 5 photosensors 112.3.
4.5.

For this purpose, if the photo sensors are arranged as shown in FIG. 3 and each photo sensor detects the presence or absence of a document at each position, the size of the document can be determined by combining the information.

FIG. 4 shows a table of seven combinations. In the figure, ON means that the original is detected, and OFF means that the original Z is not detected.

For example, only the photo sensor at sensor position and O is O.
If it is N, it can be seen that the A4 size original is centered in the SEF direction.

When the original is set in this manner and the platen cover 7 is closed, the original size and setting direction are automatically determined.

Next, when the paper size is specified using the paper size selection button 12, a copy magnification is calculated from the ratio 'fJ) of the detected original size and the specified paper size, and the copying machine is automatically set to that magnification. .

For example, the 34th edition of the manuscript! If you set the document in the setting direction LEF and specify A3 size as the paper size, the original size will be determined as B4 size and the magnification will be calculated to 115%, and the variable magnification will automatically operate and the magnification will be 115%. , and the cent direction LEF has also been determined, so the paper tray in the A3 size LE'F setting direction is selected.

In addition, if the copy magnification is specified using the magnification selection button 13 instead of specifying the paper size, the size of the copy paper is calculated based on the detected original size and magnification, and the paper tray is is selected.

For example, if you set an A3 size original in the SEP direction, 70.
If a magnification of 7% is specified, the document size is determined to be A3, and based on this, the paper size is divided into A4 and the loading direction is SEP, so the paper tray for A4 is set in the SEP direction. Automatically selected.

Note that depending on the original size and orientation, there are paper sizes that cannot be selected or copy magnifications that cannot be specified, so when the set original size and orientation are detected, only selectable paper sizes are selected based on that information. This is displayed on the display 15, and only specifiable magnifications are displayed on the magnification display 16 to prevent erroneous operations.

If there is no paper stock in the selected paper tray, a message to replenish paper is displayed on the display device 14.

The above-mentioned operation is performed when the automatic mode is set using the auto/manual switching button 11. When the automatic mode is set to the manual mode, the copying machine can be operated as a normal copying machine.

Furthermore, in addition to the document size, the presence or absence of a document on the platen cover can be determined, so there is no need to insert a document by using the automatic opening mechanism of the platen cover. Copying errors can be prevented by dividing the state yt IV/ and opening the platen knife.

The automatic platen cover opening mechanism is capable of automatically opening the platen cover upon receiving a signal from the control section of the copying machine body even when copying is completed, thereby preventing the document from being left behind.

A schematic pull diagram Z of the control system in the above embodiment is shown in FIG.

The mark indicates a central processing unit CPU which is the center of the control system, and performs control processing according to a program written in a non-volatile memory ROM 22 while using a volatile memory IJ-RAM 21.

Input devices include the photo sensor 1 and 5, a paper size selection button 12, a magnification selection button 13, an auto/manual switching button 11, a start button 10, etc. These input signals are sent to an input interface 23.
It is sent to c p U 20 via Y.

The output devices include a tray selection device 5 that selects one of the 111 paper trays depending on the paper size and setting direction, a variable magnification device 26 that sets the magnification ratio of the copying machine, and the display device 14, paper size display 15, and magnification display. There is a container 16 and an electromagnet 17 for the sword parlock, etc. 1 Soreso 01"U3
The instruction signal is received from O via the output interface 24 and displayed.

The control system of this embodiment has the above-mentioned five components, and its operating procedures will be explained step by step.

It is assumed that the auto state is set by the auto/manual switching button 11.

First, when the original KiY is set and the platen cover 67 is closed, it is locked by the electromagnet 17, and the photosensors 1 to 5 detect the original, and if no original has been inserted at this point, the photo sensors (indicates that the photosensor 1 at position A in FIG. Notify the operator that the setting has not been made.

If an original is set, photo sensors 1 to 5
The paper size display 15 determines the size of the document and the 7 stitches in the cent direction based on the combination of ON and OFF states, and displays possible copy paper sizes based on this document information.
7 possible magnifications are displayed on the magnification display 16.

And if paper size is given priority, paper size selection button 1
In this case, the paper size is selected from among the 111 paper sizes displayed on the paper size display 15.

When the paper size is specified, the tray selection device 5 selects and sets the required paper tray based on the setting direction and 111 paper size in the document information, and also selects and sets the paper tray according to the document size and +tJ.
The magnification is calculated from the a size, and the magnification is set using the variable magnification device 26.

If magnification is given priority, the magnification is specified using the magnification selection button 13. In this case, the magnification is selected from among the magnifications λt displayed on the magnification display 16.

When the magnification is specified, the magnification is set by the magnification change device 26, and the paper size is calculated from the document information and the magnification, and selected and set by the M paper tray and Z tray selection device 5 in consideration of the setting direction.

If there is no LIJ paper stocked in the m paper tray specified here, the display device 14 will display +n paper replenishment and alert the operator.

After the initial settings of the copying machine have been completed, the recovery is performed by operating the start button 10, and when the recovery is completed, the lock state by the electromagnet 17 is released and the platen cover 6 is closed.
This prevents the operator from misplacing documents.

Further, by operating the auto/manual switching button 11 to set the copying machine Z to manual, the copying machine can be used as a normal copying machine, and it is also possible to change the size such as reduction or enlargement to match the paper size of the original.

Effects of the Invention As described above, in the present invention, by automatically detecting the original size 7, if the input setting is changed to give priority to either the paper size or the copying magnification, the other is automatically set, and the operator can When changing the magnification, it is possible to obtain an appropriate Enoki copy Z without having to make complicated calculations, which reduces the burden on the operator! This can be reduced and also prevent failures due to tI calculation errors.

[Brief explanation of the drawing]

Fig. 1 is a view corresponding to complaints, Fig. 2 is an external view of a copying machine according to an embodiment of the present invention, Fig. 3 is a view showing the appearance of the photosensor on the platen cover, and Fig. 4 is an illustration of the operation of the photosensor. FIG. 5, which shows the relationship between document information, is a block diagram of the control system of this embodiment. 1.2.3.4.5...Photosen''+y-16...
・Platen cover, 7...Platen glass, 8...
In Sugi, 9...Operation panel, 10...Start button, 11...Auto/manual switching button, 12...
・Paper size a JR button, 13...Magnification selection button, 14...Display device, 15...IIJ paper → 1 size display -, 16...Magnification display, 17...Ka (-)
Computer 1, Ii Denken, 18... Iron piece, 20... CPU, 2]... RAM, 22...
ROM, 23... Input interface, 24...
Output interface, 25...tray selection device, 2
6... Magnification variable device 0 Agent Patent attorney Ehara Nozomi 2 people

Claims (1)

[Claims] In a copying machine where the platen cover is opened and closed to take in and take out originals, there are multiple sensors installed on one platen cover that detect the original size and orientation of the original when the grating bar is closed. a document information determining means for determining the document size and the document setting direction based on a signal from the copy paper; a paper size input means for manually inputting the size of copy paper; and a paper size input means for manually inputting the size of copy paper; a magnification determining means for determining the reproduction magnification; and a magnification setting means for setting the magnification of the copying machine based on the magnification determined by the said means;
Copying is performed based on the information from the magnification input means for inputting the copy magnification, the same magnification input means, and the document information determination means.
An automatic manuscript for a copying machine characterized by comprising paper information determining means for determining the paper size and setting direction, and tray selection means for selecting a paper tray to be used based on the paper information determined by the means. Size detection control device.