JPH0274961A - Copying device - Google Patents

Abstract

PURPOSE:To improve copying efficiency by setting copying variable magnification based on the size of a document and the size of transfer paper, and executing copying to respective documents. CONSTITUTION:By a copying magnification selecting key A2-7, the reduction rate of a copy is selected, the result of selection is displayed in a copy magnification display block A2-8, copying magnification is displayed by % in magnification of length A2-9, and simultaneously, the combination of a document of a fixed form size and the size of transfer paper is displayed. In the case of a state that an automatic magnification selecting key A2-12 is depressed, magnification (enlargement rate, reduction rate) as also determined automatically by a document size, a transfer paper size and other selected mode. Also, by a 1-size variable magnification key A2-13, the device is set automatically to magnification by which (mixed) documents are all held in transfer paper which is selected by a form selected by a form selecting key A2-4. In such a manner, copying can be executed efficiently by the variable magnification corresponding to a purpose.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a copying device, and in particular, a copying device that detects the size of a plurality of originals of different sizes and selects transfer paper by detecting the size of the originals. The present invention relates to a copying apparatus that efficiently performs variable size copying.

[Prior Art] In a conventional copying machine, when an automatic document feeder is used for mixed-size documents and copies are made on transfer paper of one size (as requested by the user), the user must check the maximum size of the document by himself/herself. , the magnification is calculated (set) so that the maximum size of the original can be placed on the transfer paper, and the magnification is inputted using an input means to make a copy.

Also, some of the current copying machines have a copying mechanism in automatic magnification selection mode, but in this case, the size of the originals placed on the automatic document feeder is read one by one, and the Each time, I set the device to the magnification that matches the transfer paper.

[Problems to be Solved by the Invention] In the conventional method described above, until the copy is completed, manual operation requires complicated work and long processing time, and even when automatic operation is used, the original size is reduced to one page. Since the images are read one by one, the magnification is set to match the paper, and the copy is made, a considerable amount of processing time is required.

The present invention has been made in view of the current state of copying devices, and its purpose is to save the operator's time and effort when copying mixed-size originals onto transfer paper of one size.
Moreover, it is possible to finish copies quickly and improve the efficiency of copying.

[Means for Solving the Problems] In order to achieve the above object, the present invention includes an automatic document feeder and performs variable-magnification copying by changing the copying magnification according to the size of the document and the size of the transfer paper. In the copying machine, the sizes of the plurality of originals placed on the automatic document feeder are
a detection means for detecting in advance before copying; a selection means for selecting the size of the transfer paper; the sizes of the plurality of originals detected in advance by the detection means; and the size of the transfer paper selected by the selection means. The present invention is characterized in that it further includes a variable magnification setting means for setting a variable magnification rate based on the copy magnification.

[Operation] The sizes of the plurality of originals placed on the automatic document feeder are detected in advance by the detection means before copying. Based on the size of the original detected by the detection means and the size of the transfer paper selected by the first selection means, the variable magnification setting means sets the copy magnification, and copies are made for each original.

For example, the copy magnification ratio is set by the magnification ratio setting means for the transfer paper of the size closest to the maximum original size selected by the 1 selection means with respect to the maximum original size detected by the detection means. , copies are made for each original.

[Example] Hereinafter, an example of the present invention will be described in detail with reference to the drawings.

FIG. 1 shows an overall configuration diagram of an embodiment of the present invention.

Part B is a schematic diagram of the RDH, in which the document A-1 is separated one by one, sent to a predetermined position on the contact glass A-2, and stopped. Then, using the exposure optical system described later,
After being exposed, the original A-1 is ejected and returned to the original placing section.

Part A is a schematic diagram of the main body of the copying machine, in which the original image on the contact glass A-2 is exposed by an exposure lamp A-3, and the first mirror A-4, the second mirror A-5, and the third mirror are exposed. A
-6, Lens A-7. It is projected onto the photosensitive drum A-9 via the fourth mirror A-8. Further, the photosensitive drum A-9 is charged by the charging charger A-40, exposed to light as described above, and the image is developed by the developing unit A-11.

A-12 is a paper feed tray for transfer paper, and in this embodiment, three different sizes of transfer paper can be set therein. The transfer paper is fed one by one by turning on the paper feed clutch A-18 (not shown) and conveyed to the photoreceptor drum A-9, and then transferred to the photoreceptor drum A-9 by the transfer charger A-13.
After the image on -9 is transferred, it is separated by separation charger A-14 and fixed by fixing unit A-15. 6A-16 is a reversing unit, and fixing unit 8-1
The transfer paper on which the image has been fixed in step 5 is normally ejected to the finisher (F 1nisher), or the paper is reversely ejected, or it is directly transported to the duplex unit A-17, or it is reversed and transported to the duplex unit A-17. It is possible to switch to A-17 is a duplex unit which stacks the transfer sheets sent from the above-mentioned reversing unit A-16, and then transfers the transfer sheets again to the transfer section A-13 by turning on the duplex paper feed clutch A-19 (not shown). It can be transported to

Also, part 0 is a schematic diagram of a finisher, which stacks or staples transfer sheets fed from the main body.

FIG. 2 shows the operation section of a copying machine implementing the present invention.

When the main switch A2-1 is turned on, the lamps of each key are lit, or guidance or the selected mode is displayed on the LCD display panel A2-10. Print key A2-2 is the copy start key, numeric keypad A2
-3 is the key used for inputting the number of copies and dimensions, etc.
The paper selection key A2-4 selects the cassette tray, and the selected content is displayed in the paper selection block A2 on the display section.
-5, a specific selected portion is displayed.

When the automatic paper selection display is set to A2-6, the optimal paper is automatically selected from trays 1 to 3.For example, in the example shown, the first tray is B4, the second is A4, and the third is A3. is set, and each time paper key A2-4 is pressed,
The arrow A2-6 indicates [ ko is displayed, and one of the four lines is displayed one after another.

The copy magnification selection key A2-7 selects the reduction ratio for copying.

The selected result is displayed in the copy magnification display block A2-8, the copy magnification and the length magnification are displayed in % in A2-9, and at the same time, the combination of standard size original and transfer paper size is displayed. .

The illustrated example shows a state in which the reduction key is selected and 70.7% step is selected. As shown in the figure, a lamp lights up in the tJs window on the left side of the key to indicate the selected mode. Automatic magnification selection key A2
-12 is in the special function key group A2-11, and when this key is pressed, the magnification (enlargement rate, reduction rate) will also be automatically adjusted depending on the original size, transfer paper size, and other selected modes. determined. Also, A
2-13 is a 1 size/magnification key, which is used to transfer paper selected by the above-mentioned paper selection key A2-4 (mixed).
The magnification is automatically set to fit the entire original.

The start key A2-15 is used to finally bind the copies, and the selected mode is displayed by lighting the lamp of the 1 display block A2-16.

FIG. 3 shows the variable magnification mechanism of the exposure optical system described above.

Lens drive motor A rotates according to the specified magnification ratio
-20 rotation is transmitted to variable power cam pulley A-25 via timing pulley 8-21, timing belt A-22, worm wheel A-23, and worm gear A-24. Further, a lens drive wire A-26 is wound around the variable magnification cam pulley A-25, and this wire A-26 has the following characteristics:
Bracket: Lens: Y A-27 is fixed.

Bracket: Lens: YA-27 is guided in the Y direction by a guide rod YA-28 and is slidable.

In addition, a guide rod:XA-29 that guides the bracket:lens:XA-30 in the X direction is fixed to the bracket:lens:'YA-27, and the bracket:lens:XA-30 is , can be slid in the X direction. Also, bracket: lens: X A-3
0 is guided by a lens guide A-31 on the grooved cam. Therefore, bracket: lens: X A-30
The lens A-32 fixed to the lens drive motor A-
When 20 rotates, it can move in the X direction and the Y direction.

The lens can be moved to a predetermined position according to a specified magnification ratio. Further, A-33 is a lens home sensor, which detects the home position of the lens (for example, the same magnification position) by detecting the detection filler A-34 fixed to the bracket:lens:YA-27. .

FIG. 4 shows an example of a means for detecting the size of transfer paper set in the paper feed I-ray A-12 (FIG. 1). In this example,
The paper size is detected by detecting the position of the paper guide A-40. In the embodiment shown in Fig. 4, it is possible to detect three types of paper sizes, and as shown in Table 1, when the paper size is small (for example, A4), the paper guide A-40
The filler A-41 fixed on the is not detected by either size detection sensor A-42 or A-43, and when the size is medium (for example, B4), only one sensor A-42 is detected, and when the size is large, it is detected by only one sensor A-42. The time is detected by rain sensors A-42 and A-43.

In this embodiment, it is possible to detect three types of paper sizes, but if you change the number of sensors and the arrangement of fillers,
It becomes possible to detect more than that.

Table 1 Next, details of the 1 reversing unit A-16 (FIG. 1) are described.

FIG. 5 is a detailed view of the reversing unit section. First, main reversing roller A-45, reversing roller: front A-46 and reversing roller:
The rear A-47 is in contact and rotating.

Here, 1 reverse roller: front A-46 and reverse roller: rear A-47
can be switched between two positions, the solid line (closed position) and broken M (opened position W) shown in FIG. 5, using a reversing solenoid A-50 (FIG. 6).

Similarly, the branch pawl A-48 can be switched between the solid line (upright state) and the broken line (fallen state) shown in FIG. 5 by the branch solenoid A-51 (FIG. 7).

Here, ■ When transporting directly from fixing to the finisher (Fig. 8), both solenoids (A-50, A-51)
is OFF, the re-inversion rollers (A-46, A-47) are in a closed state, the branch claw A-48 is in a fallen state, and the transfer paper is conveyed as it is to the buini rasher.

■ When conveying from fixing to the finisher after being reversed (Figs. 9 and 10), the reversal solenoid A-50 is ONL, the re-reversal roller A-46°A-47 is in the open state, and the branch The solenoid A-51 is turned off, the branch claw A-48 falls down, the leading edge of the transfer paper rises (FIG. 9), and then the transfer paper is conveyed from the rear end to the finisher (FIG. 10).

■ When transporting the image directly to the duplex unit from fusing (
In Fig. 11), only branch solenoid A-51 is ONL.
, the re-reversing rollers A-46 and A-47 are in a closed state, the branch claw A-48 is in an upright state, and the transfer paper is conveyed as it is to the double-sided tray.

■ When reversing from fixing and transporting to a single-sided tray (Fig. 12), turn on both solenoids A-50 and A-51.
L, the re-reversing rollers A-46 and A-47 are in an open state and the nine-branch claw A-48 is in an upright state, and the transfer paper is reversed and conveyed from the rear end to the double-sided tray.

Further, A-49 is a fixing jam sensor, which detects a jam in the fixing section, and also detects the above-mentioned re-reversing roller A-46,
The operation timing of the solenoid that operates A-47 and branch pawl A-48 is determined.

FIG. 13 shows an automatic document feeder (Recycling Document Handi) of a copying machine to which the present invention is applied.
er), B1-1 is the RDH main body, and the copying machine main body B
It is supported by a hinge on the contact glass B1-3 of No. 1-2 so as to be openable and closable. When the final page of the original is fed and falls, the final page detection filler B1-7 detects the top page of the original B1-6 set on the original tray B1-5, and the photo interrupter B1-9 resets the filler. The motor B1-8 is driven, and the filler returns to the uppermost surface of the document through the trajectory indicated by the arrow α.

When feeding the original, the handling roller B1-10 applies vibration to the leading edge of the original. As the paper feeding roller B1-11 rotates, the documents aligned on the separation belt B1-12 are conveyed one by one to the exposure section and guided to the conveying roller B1-13. During transport, the document width is detected by detectors B1-15 (more than one may be installed if necessary), and the document size and feeding timing are also determined by measuring the passage time of the leading and trailing edges of the paper (original). etc. are set. Similarly, the conveyor belt B1-20 feeds the paper (original) over the contact glass, where the number of originals is set by detecting the passage of the original.
After exposure, it passes through the relay roller B1-25 and then the discharge roller B1.
-26, the documents are again circulated onto the document in the document tray B1-5 in the order of pages.

The above active devices include a paper feed motor B-1-16 for the paper feed and transport section, and a dedicated transport belt active motor B1-21 for accurately transporting documents in the exposure section.

In the automatic document feeder of this embodiment described above, in order to detect the maximum size of the placed originals (of mixed sizes), all placed originals are transported once before the copy operation, and
The aforementioned detectors B1-15 can detect and judge the size of each document, but in addition, although not shown, separate detectors are provided in the document placement section according to each size.
It is also possible to detect the maximum size without transporting the document.

FIG. 14 is a schematic diagram of the finisher according to the present invention.

The transfer paper that has undergone each copying process is transferred from the paper discharge port of the main body to the finisher shown in FIG. 14. The transfer paper that has entered a part of the finisher is transferred to the main motor C (not shown).
-1-16, and is conveyed by a conveyance roller driven by C-1-16, and passes through the entrance sensor of C-1-1. The entrance sensor is arranged as shown in FIG. 15(a), and detects the entrance of the transfer paper and at the same time identifies the size of the transfer paper. In this embodiment, S sensor 1 is arranged as shown in the matrix of FIG. 15(b). , and the output of 2 and its transit time A3. B4. A4 size is identified.

The transfer paper that has passed through the entrance sensor section is sent to the belt conveyance section C-1-12. C-1-3 is a driven ball body, which is designed not to apply any load to the direction change of the transfer paper. The transfer paper that has reached the belt conveyance section is sent to the entrance sensor C-1.
At an appropriate timing from -1, the reference changing unit C-1-4 is operated as necessary (in the case of right-hand dotting) to adjust the transfer paper to the right-hand reference. FIG. 16 is a detailed explanatory diagram of the above unit.

In FIG. 16, in the initial state, the drive solenoid SQL of C-3-6 is in the OFF state, so the spring C
- Due to the force of -3-7, the horizontal conveying roller of C-3-5 is moved to C-1-
It is located away from the second belt. In this state, the transfer paper enters along the left reference wall C-3-1, but if the staple is set to the left, it will continue to pass through, and the staple must be set to the right while being swiped. At some point, it becomes necessary to abut all of the transfer papers that are coming along the left reference wall (therefore, the right sides of the transfer papers are not aligned depending on the size) against the right reference wall to align them.

In this case, C-3-6(7)' is detected at an appropriate timing based on the detection of the leading edge of the paper by the entrance sensor C-1-1.
/L//The horizontal conveyance roller C-3-5 rotates in the direction of the arrow while the transfer paper is in progress by controlling the ID SOL ON and OFF.
By bringing them into contact with each other, a conveyance force in the lateral direction (rightward direction) is applied, and the conveyance force is applied to the right side reference mc-s-2, and subsequent conveyance is carried out based on the right side reference for all sizes. Furthermore, C-3-
3 is a guide member for ball C-1-3, C-3-4
indicates the transfer paper, and the horizontal conveying roller C-3-5 is driven by the main motor C-1-16 by a transmission means (not shown).

The transfer paper that has passed through the belt conveyance section is conveyed using either the left or right end surface as a reference and reaches the branching section.

At the branching section, if the transfer paper does not require stapling, the gate C-1-5 remains closed and the transfer paper is ejected straight as is and stacked on the paper ejection tray C-1-6.

If it is necessary to staple the transfer paper one by one, the gate C-1-5 is opened and the transfer paper after passing through the five-belt conveyance section is conveyed while being reversed once after passing through the gate C-1-5. Game) - Although the control of C-1-5 will not be explained in particular,
For example, the gate C-1-5 may be opened or closed using a solenoid or the like depending on the staple mode or non-staple mode.

The transfer paper conveyed while being reversed is stacked on a stacker C-4-3 shown in FIG. 16, which will be described later, after a sensor C-1-8 is added. In some of the C-4-3 stackers, in order to more accurately align the left or right edges in preparation for the primary stapling, the C-1-9 moving roller unit shown in Fig. 14 is used as the C-1-8 stacker. It operates according to the timing from the sensor and aligns the transfer paper with either the left or right reference wall. Also, the tip is part of the C-1-13 stapler C-
Align it against 1-15.

FIGS. 17(a) and 17(b) are detailed explanatory views of the operation of the shifting roller unit. FIG. 17(a) is an explanatory diagram of the operation of aligning the transfer paper to the left reference wall C-4-1. In the case of left-hand alignment, the transfer paper is conveyed based on the left reference, but from the paper feed stand. A slight deviation occurs due to skew in the path leading to the stacker of C-4-3. If the stapling operation is performed without correcting this misalignment, the stapled bundle will be uneven, so during the stacking operation in the stacker G-4-3, the aligning roller unit C-1-9 performs the aligning operation.

First of all, in the case of left-hand drive, the motor C-4-10 rotates clockwise and the rack C-4-10 engages with the pinion C-4-11.
12 is formed on the upper part of the collapsing roller unit C-1-
9 moves to the left and stops at the position detected by the 1 positioning sensor C-4-13. Based on the left reference, this position is at least to the left of the position where the shifting roller contacts the minimum size transfer paper.

In this state, the solenoid C-4-8 is turned off, and the shifting roller C-4-5 is separated from the stacker by the force of the spring C-4-9. When the transfer paper is received into the stacker in this state, the solenoid C-4-8 is controlled to turn on and off at an appropriate timing based on the leading edge detection signal from the sensor C-1-8, and the moving roller C-4-
5 comes into contact with the transfer paper, the left reference wall C-4-
It hits 1. At this time, the reversible motor C-4-7 is connected to the transfer roller C-4-5 by the transmission means C-4-5.
6, clockwise rotation is given.

Next, in the case of right binding, the C-4-IQ motor first rotates to the left, and the collapsing roller unit C-1-9 moves to the right and stops at the position detected by the positioning sensor C-5-1. . This position is based on the right reference.

At least to the right of the position where the shifting roller contacts the minimum size transfer paper. The subsequent operation of the shifting roller unit is the same as in the case of the left reference described above.

In this case, the direction of rotation of the shifting rollers is counterclockwise.

As described above, the stack of transfer paper C-1-10 aligned on the stacker C-4-3 with the left or right as a reference is stored when the clutch C-1-17 (not shown) is turned on. , the belt c-i-11 connected to the clutch rotates, and the belt C-1
The projection C-1-12 provided on -11 allows the output tray C to
Dropped on -1-14. The above operation makes it possible to close transfer sheets of different sizes at the same time based on the left or right side.

FIG. 18 is a control block diagram of a copying system according to an embodiment of the present invention. The details will be explained below.

This copying system is comprised of a copying machine main body, a finisher, and a W-ring automatic document feeder (RDH).

D3-1 is a control section of the main body of the copying machine, which includes a copy mode input and display section, an operation section D330 having a power switch A2-1, etc., a power supply section D350 that supplies DC voltage to the copying system, and three power supplies. A paper feed control unit D340 that controls the paper tray, and a lens control unit D360 that controls a lens drive motor for moving the lens when changing the magnification ratio.
The main control unit D300 is configured to include a plurality of unit control units such as, and a main control unit D300 that controls each of these control units. Also, D3
-2 is a finisher control section, D3-3 is an RDH control section, and each control signal interface line D203
．． It is connected to the main body main control section by D108. Each control section will be explained below.

FIG. 19 is a control block diagram of the main body of a copying machine according to an embodiment of the present invention. The details will be explained below.

D300 is the main control board of the main body of the copying machine, and includes timers D402a and D402 that have multiple timer and counter functions.
b. ROM D410 in which the control program is stored
a, D410 b, RAM D409 for temporarily storing control data. Ilo D405a that performs input/output control with each unit control unit and finisher-RDH
-D405f, driver buffer array D406a
, D406b.

Driver D407a, D407b, buffer D408
a-D408c, a pass line D404 connecting these
, a CPU for controlling each element, a reference oscillator D411 for a control clock, and the like. Also D403a
, D403b each have 1m5ec interrupt control, 10m
IKHz, 100Hz used for 5eciFI control
This is the timer 1 output signal line.

D330 is an operation unit, and Ilo D433. It is composed of an operation key section D431, a display section D432, a power switch A2-1, and the like.

D360 is a lens control unit that performs input/output control with the main control board.D452 Lens home switch PS41A33 serves as a reference position when driving the lens, Lens drive motor A2011! It is composed of a dynamic driver D451 and the like.

D340 is a paper feed control section, and three control sections D of the same circuit
460a"D460c, and each control section includes a size detection sensor PS42 A43, P461 which performs input/output control with the main control board and detects the size of the transfer paper.
S43 A42 and transfer paper feed clutch Mc40 A
18 etc.

Also, A51 5OL41 is the branch solenoid, A50
5OL40 is the reversing solenoid, A19M c 4
1 is the duplex paper feed clutch, and A49PS44 is the fixing jam sensor. Further, D470PS45 is a double-sided empty sensor that detects that the inside of the double-sided unit A17 is empty.

Next, the control of the embodiment of the present invention will be explained according to the control flow diagrams shown in FIGS. 22 to 25.

22 and 23 show the main control flow of the copying machine main body.

When the main switch A2-1 of the main body is turned on, control power is supplied from the DC power supply 0350 to the main control board D300, and the control program is started.

First, the initial data needed to control the replication system.

A subflow that is a flow that sets the mode: Initial settings (
■) (Step 1), and change the magnification to the initial magnification (e.g. 1
Subflow to set to 00%): 0th order to execute initial setting of magnification (step 2).

Subflow for checking the input state of the operation key D431 on the operation unit D330: Execute the operation key input check (step 3) and check the input data.

Decide the mode etc.

Next, step 4) outputs a stapling signal, which is a finisher-related signal, to the finisher. Step 5) outputs copy number data to the finisher according to the result of the subflow: operation key input check. Step 5) outputs a finisher stapling signal. Step 6), subflow: Transfer paper size check (step 7). In this flow, the size detection sensor A43 installed on the paper feed tray A12. The transfer paper size in each paper feed tray is determined based on the output state of A42. Next step 8
Now, the various conditions of the copying machine have been determined, and it is determined whether or not it is in a copyable state. If No, the subflow for controlling the copying waiting state of the copying machine: After execution of the copy waiting process (step 9) , Said subflow: Return to the state immediately before the operation KEY input check.

If YES, the primary automatic magnification selection mode (A.

Determine whether M, S mode) is set (
Step 10) If No, then it is determined whether the automatic paper selection mode (A, P, S mode) is set (Step 11).If it is APS mode, then whether or not copying has started, That is, print key A
2-Check whether ■ is turned on or not (Step 12)
, if no.

Return to ■. If YES, by executing the subflow: copy end process (step 13),
Perform PS copy mode, and after copying is completed (step 14)
) Subflow for performing copy final processing: After executing the copy end process (step 15), return to step (2) and prepare for the next copy. If the result of the APS mode determination is No,
Next, it is determined whether copying has started (Step 16); if No, return to ■; if YES, subflow 12 copy standard process (Step 17)
By executing , the normal copy mode is performed, and after copying is completed (step 18), the subflow for performing copy final processing: returns to after execution of the copy end process (step 19), and prepares for the next copy.

In addition, in the AMS mode determination, if the AMS mode is set, it is then determined whether copying has started, that is, whether the print key A2-2 has been turned on (step 20); if NO, Return to.

If YES, subflow: control mode initialization initializes control data, mode, etc. required for AMS copy (step 21), and then outputs a free run cycle mode signal (RMODE) to the RDH. After executing step 22) and subflow: copy free run process (step 23), the process moves to the next step. The copy free run process is a flow in which the RDH executes timing mode control of the main body while the free run cycle mode is being executed.

The next step and subsequent steps will be explained according to FIG.

Subflow: The original size list is a flow for creating an original size list as shown in Figure 26, in which the size of each document is sequentially stored in the document set from an arbitrary address based on the document size signal output from the RDH (step 1). It is.

Next, it is determined whether or not a document end signal has been output from the RDH (step 2), and if No, the process returns to (2).

If YES, determine whether the BUSY signal is output from the RDH (step 3). If the BUSY signal is output, that is, when the RDH original is being replaced,
to return to.

If No, the process moves to the next step, first setting the RMODE signal to 0FFL (step 4), outputting a start signal to the finisher (step 5), and then executing the subflow: transfer paper selection (I) (step 6). In this flow, the transfer paper is determined according to the setting mode, but
Details will be described later.

Next, subflow: variable magnification selection (step 7) is executed. In this flow, the transfer paper size determined by the subflow: transfer paper selection (I) (step 6) and the subflow: original size list (
The original size data created in step 1),
Based on the magnification data table shown in FIG. 27 stored in the ROM D4-10, an appropriate magnification for each document is determined, and the minimum magnification is selected as the variable magnification from among these magnifications.

Next, the subflow: variable magnification set (step 8) is executed, the lens is moved to the magnification position selected by the subflow: variable magnification select (step 7), and the variable magnification is set.

Next, the copy number counters Co and C0NT are cleared to zero (step 9). In the next step 10, subflow: interrupt counter initialization is executed to initialize the interrupt counter used as a control counter.

Next, a subflow for executing the copy process in AMS mode: Execute the AMS process (step 11), and then output the Feed signal (step 12)
After the 0th step, the output of the BUSY signal from H is determined (step 13), and if it is not output, that is, the RD
When the H document replacement operation is completed, the process moves to the next step. The next step is to set the Feed signal to 0FFL (step 14) and shift to flow 0.

The subsequent flow will be explained according to FIG. 24.

First, it is determined whether a document end signal is output from the RDH (step 15), and if the signal is not output, the process returns to step (2). If the signal is output, add 11111 to the C○, C0NT in step 16.
), move on to the next step.

In the next step 17, it is determined whether the contents of Co and C0NT match the copy number data set by the subflow: Operation KEY input check, that is, whether copying has been completed. If the judgment result is No,
Return to ■. If YES, subflow 12 copy end process (step 18) is executed to execute the final processing of the copy process.

FIG. 25 is a subflow: Transfer paper selection (1). In this flow, first, automatic paper selection (AP
Step 6- Determine whether S) is set.
1) In the case of No, that is, in the case of manual mode, execute the subflow of the next step: manual transfer paper determination (step 6-2), and select the transfer paper by pressing the paper selection key A2-
The transfer paper in the tray selected in step 4 is used. In addition, in the case of YES in the above judgment flow, that is, in the case of APS mode, the next subflow: Select the largest size (step 6-3) is executed, and the original size data created by the subflow 12 original size list is executed. The most commonly used size is selected from the original list shown in FIG. 26 and is set as the transfer paper size.

FIG. 20 is a control block diagram of the RDH according to the embodiment of the present invention.

D-Zoo is the main control board of RDH, and includes a timer control unit 0115. ROM part D111 in which the RDH control program is stored, R A in which control data is temporarily stored
A one-chip microcomputer D110 consisting of an input/output controller D113, an input/output control unit D112, a path line D114 connecting these, a CPU unit D116 that controls each of the blocks, a reference oscillator D117 for a control clock, etc., and an output. Driver D 101. D
102. D103, input cover 77D104. D105
．． It is composed of a control signal interface line D108 with the main body (copying machine), and the like.

Further, B1-8 is a document last page detection sensor filler reset motor. B1-16 is the motor for feeding and conveying the document; B
1-21 is a conveyor belt drive motor. D120 is a rotation detector that rotates in synchronization with B1-21. D
121 is a speed control board that controls the speed of B1-21 based on the speed signal of B1-21 detected by D120.

B1-15-a and B1-15-b are document size detectors, which can detect three types of document sizes. In other words, for large size (A3), B1-15-O, B1-15
-b are both turned on. For small size (A4) and medium size (B4), only B1-15-a is ONL.
A4 and B4 are distinguished by the 08 time difference of B1-15-a. B1-9 is a document final page detector.

Next, the control of the embodiment of the present invention will be explained below according to the control flow diagrams shown in FIGS. 28 to 30.

FIG. 28 shows the main control flow of RDH.

When the main switch A2-1 of the main body is turned on, a control power supply +5■ is supplied from a DC power supply (not shown) to the main control board D100 of the RDH, and the control program is started. First, subflow 2 initialization (step 1), which is a flow for setting initial data and mode necessary for RDH control, is executed. Next, check the control mode flag RMODE (step 2), which is a control signal from the main unit, and if RMODE is set, execute free run recycle mode (step 3), and if not set, copy Recycle mode (step 4)
Execute.

The free run recycle mode (step 3) is
In this mode, the documents stacked on the document table of the RDH are sequentially circulated, the size of each document is detected, and the size of each document is output to the main unit. Therefore, the main body copy creation process does not work.

The copy recycling mode (step 4) is a mode in which the originals are sequentially circulated based on the Feed signal, which is a document feed control signal from the main unit, and the main unit executes the copy creation process in synchronization with the RDH. It is. Each mode will be explained in detail below.

FIG. 29 shows the RDH subflow: free run recycle mode (step 3).

First, turn on the belt drive motor B1-21 (step 3-1), then output the control signal RDHBtJSY indicating that the RDH is replacing the original to the main body.Step 3
-1), turn on the document feed motor B1-16 (step 3-2), and proceed to the next step. Next step 3-
3, the document sensor PSIOB1-15-a is ONL,
If no, the process returns to immediately before the document sensor check routine. , if YES, proceed to the next step. In the next step, the document feed motor is turned off (step 3-4), and the process moves to the next step.

In the next step, subflow: In the zero subflow for executing document size check (step 3-5), document size sensors PS10 B1-15-a, PS
II Check B1-15-b and detect the document size. In the next step, the document size data detected in the above flow is output to the main body (step 3-
6) Next, in order to check whether the last page of the document has been fed, check whether the last page detection sensor is ON (step 3-7). If NO, there are still documents left. Therefore, set the original sensor PS10 to 0FF.
L (step 3-8), the process returns to immediately before the original paper feed motor ON execution flow (step 3-2). If YES, start timer D402a in step 3-9.
), after the timer D402a times up (step 3-
10) Reset the timer D402a Step 3-
11), Bell 1. ! Turn off the dynamic motor (Step 3)
-12).

The value of the timer D402a is set to a time sufficient to eject the original onto the original placing table.

Next, turn the last page detection filler reset motor B1-8 to O
NL, (step 3-13), starts timer 402b (step 3-14), and after timer D402b times out (step 3-15).

Reset the timer D420b (step 3-16) and set the last page detection filler reset motor B1-8 to 0F.
F (step 3-17), the value of the timer D420b is set to a time sufficient for the final page detection filler to reach the top of the original placed on the original platen.
Control signal RDHR indicating that the document replacement operation has been completed.
Output EADY to the main unit (step 3-18) and return to the main flow. FIG. 30 shows the RD'H subflow: copy recycle mode.

First, check whether the Feed signal, which is a control signal for requesting document replacement, is output from the main body in step 4-1.
), if it is not output, return to the main flow.

If it is output, move to the next step and output the control signal R.
Step 4-2): Output the DHBUSY signal to the main unit.
Next, the belt drive motor is turned on (step 4-3).

Next, the final page detection sensor PS12B1-9 is checked (step 4-4). PS12 B1-9 is ON
If not, first turn on the paper feed motor B1-16.
,,Next, check PSIOB1-15-9 (step 4-6), and if the sensor is turned on, proceed to the next step. In the next step, the paper feed motor B1-16
Turn off.

If YES in the last page detection sensor ON check flow (step 4-4), turn on the last page detection filler reset motor B1-8 in step 4-8.
), starts timer 2 (step 4-9), and after timer 2 times up (step 4-10), starts timer 2.
(step 4-11), set the final page detection filler B1-8 to 0FFL (step 4-12), output the original end signal (step 4-13),
Move to immediately before the timer 1 start flow.

Next, start timer 1 (step 4-14), and after timer 1 times up (step 4-15), start timer 1.
(Step 4-16)L, Belt drive motor B1-21 is set to 0FFL (Step 4-17).In the next step 4-18, the control signal RDHBUSY is set to ○FFL, and then, Fa
21 is a control block diagram of the finisher according to the embodiment of the present invention.

The details will be explained below.

D200 is the main control board of the finisher, which includes a timer control unit D214 having multiple timer functions, and a ROM unit D21 in which a control program for the finisher is stored.
3. RAM #D212 for temporarily storing control data, input/output control units D211a to 1) 211c, path line D215 connecting these, and C controlling each of the blocks.
PU section D216 and control clock reference oscillator D21
One-chip microcomputer D210 and output driver D201a"D201h composed of 7 etc.
, input buffer D202a"D202e and control signal interface line D20 with the main body (copying machine)
It is composed of 3rd class.

Further, MCC-1-17 is an ejection clutch for ejecting the copy set to an ejection tray. 5QL20 D2
30 is a stable solenoid.

5QL21 C-4-8 is the shifting roller drive solenoid for bringing the shifting roller into contact with the copy surface, 5QL22
C-3-6 is for changing the copy conveyance standard depending on the binding direction. That is, in the case of left-hand binding, the conveyance standard is accurately changed by varying the 08 hours of the solenoid depending on the copy size.

M, , C-4-10 are forward/reverse motors that change the set position of the collapsing roller unit depending on the binding direction, and D2
50a=D250d is the Mzo driving element.

That is, when the driver D201e is turned on to turn on D250a and D250d, M2° rotates clockwise (clockwise rotation) and moves the shifting roller unit toward the right binding reference position.

When the driver D201f is turned on to turn on D250b and D250c, Mz moves counterclockwise (
counterclockwise rotation) and move the collapsing roller unit toward the left binding reference position.

M2□G-4-7 is a moving roller drive motor that rotates forward and backward depending on the binding direction, and D260a=D260d is the M t 1 drive element. That is, in the case of left-hand doji, D2
The driver D201 to turn on 60a and D260d.
When gtt is turned on, the M z 1 rotates clockwise (clockwise). Also, in the case of right-hand doji, D260b and D2
When the driver D201h is turned on to turn on the motor 60c, the M2L rotates counterclockwise (left rotation).

M, , C-1-16 are finisher main drive synchronous motors. Also, the SSRD 240 turns ON the M 23.
, is a solid state relay that performs OFF control.

C-1-1-I PS20 and C-1-1-2PS21
is a transfer paper size detector that can detect three types of sizes. In other words, at the maximum size (A3), C-
Both 1-1-1 and C-1-1-2 are turned ON. For the minimum size (A4) or medium size (B4), select C-1-
Only 1-2 is ONL, and A4 and B4 are distinguished by the ON time difference of 'C-1-1-2. Further, C-1-1-2 serves as a reference for subsequent control within the finisher. C-1-8PS
Reference numeral 22 denotes a paper discharge SW that serves as a reference for the drive timing of the 5QL21 C-4-8 for bringing the shifting roller C-4-5 into contact with the transfer paper.

PS22 detects the leading edge of the transfer paper after the successor window time, and the C-4-
Turn on 8. C-5-I PS24 and C-4-13
PS23 is a positioning switch for the right-hand binding and left-hand binding roller units, respectively.

Next, the control of the first embodiment of the present invention will be explained below according to the control flow diagrams shown in FIGS. 31 to 34.

When the main switch A2-1 of the main body is turned on, control power +5V is supplied from a DC power supply (not shown) to the main control board D200 of the finisher, and the control program starts. First, a subroutine (step 1), which is a flow for setting initial data and modes necessary for controlling the finisher, is executed.

Next, check whether the start signal is output from the main body (step 2), and if it is not output, turn the main motor M23 to 0FFL (step 3), turn the puller motor M2° to ○FFL, and then (step 4) , ■Return to position.

If the start signal is output, then check whether the transfer paper has reached the position of the size standard switch PS21 (step 5), if No.

Return to immediately before this routine. If YES, proceed to the next step. In the next step 6.

First, the timer 402a is set to an arbitrary value TIMA and then started (step 6). The value of TIMA is set to the time required for the leading edge of the transfer paper to reach the standard changing unit C-1-4 after passing through the size standard switch PS21. Next, register Go and C0UNT count the number of transfer sheets passing through the reference switch PS21.
is incremented (step 7). Next, the subroutine: size check (step 8) is executed.

In this subroutine, the transfer paper size detector P
S20. The transfer paper size is determined from the output of PS21.

Next, the subroutine: Collision roller unit control (step 9) is executed, and the process moves to the next step. Next step 1
0, the value of the timer 402a is an arbitrary time TIM
Check whether A has been reached.

If the result of this check routine is NO, the process returns to immediately before this check routine. If YES.

The timer 402a is reset (step 11), and the process moves to the next step. In the next step 12, it is first checked whether the transfer paper size is A3 or not, and if YES, the flow branches to position (2).

If No, then it is checked whether it is the right binding mode (step 13). This mode signal is output from the main body to the finisher via the control signal interface line D203. If YES, the process branches to the position of flow (2). If NO, proceed to the next step (■).

The continuation of the control flow will be explained with reference to FIG.

First, the reference change drive solenoid 5OL22 is shifted to 0NL (step 14) to the primary step.

In the next step, it is checked whether the transfer paper size is A4 (step 15), if NO.

After setting arbitrary value 0NB4 to timer 2 (step 16)
, starts timer 2 (step 17).

If YES, after setting arbitrary value 0NA4 to timer 2 (
Step 18), start timer 2 (step 1
7), the arbitrary value 0NB4. ○NA4 is set to the time required to optimally change the standard for B4 size and A4 size, respectively. Next, check whether timer 2 has reached the set arbitrary value (step 19), if NO, return to the previous step of the routine; if YES, reset timer 2 (step 20), change the standard. The drive solenoid 5OL22 is turned off (step 21).

By executing the above flow, accurate reference change control can be performed for each size.

Next, the transfer paper is set to 5w4f by the paper ejection switch PS22.
Check if 11 has been reached (step 22
). If NO, the routine returns to immediately before this routine. YE
In the case of S, after setting the arbitrary value DELL to the timer 3 (step 20), the reference change drive solenoid 5OL22 is set to O.
It is set as FF (step 21), and the process moves to the next step.

The arbitrary value DELL indicates that the transfer paper is
The time required to reach 5 is set. In the next step, it is checked whether the timer 3 has reached the set arbitrary value (step 22), and if No, the routine returns to immediately before this routine, and if YES, the timer 3 is set to a new arbitrary value DEL2. After setting , start the process (step 23) and move on to the next step. Said arbitrary value D
EL2 is set to the time required to optimally move the transfer paper to the right binding or left binding reference position.

The continuation of this control flow will be explained according to FIG. 33.

First, the shifting roller drive solenoid 5OL21 is turned ON and the process moves to step 26) the first step. In the next step, check whether timer 3 has reached the set arbitrary value (step 27).

If NO, return to immediately before the routine; if YES, set the roller drive solenoid 5OL21 to ○FFL.
, (step 28), and after resetting the timer 3 (step 29), the process moves to the next step. In the next step, it is checked whether the values of the transfer paper count registers CO and COUNT registers match the number of copies (step 30).

The data on the number of copies is output from the main body via the control signal interface line D203.

In the case of No, the process returns to position (2) in the flow and re-executes the above-mentioned control flow. If YES, register Co, C0
Set UNT (step 31) and proceed to the next step. In the next step, it is checked whether the staple mode is on (step 33). The staple mode signal is transmitted from the main body to the control signal interface line D.
203. If YES, the staple solenoid 5OL20 is turned ON (step 33), and the arbitrary value TIMB is set in the II timer 4, after which the process starts (step 34). The arbitrary value TIME is set to the time required to staple the bundle of transfer sheets. Next, check whether the timer has reached the arbitrary value TIME (step 35), and if NO, return to immediately before this routine. If YES, reset the timer 4 (Step 36) and turn the staple solenoid 5OL20 to 0FF.
L.

(Step 37), turning on the paper ejection clutch Me.

(Step 38) Move to the first step. Also, if the stapling mode check routine is No,
The process branches to immediately before the discharge clutch Mc ON routine (step 38).

Next, after setting the arbitrary value TlMC in the timer 5 (step 39), the process starts and moves to the first step. The arbitrary value TlMC is set to the time required to discharge the bundle of transfer sheets after stapling to the paper discharge tray C-1-14. In the next step, the timer 5 sets the arbitrary value '1'.
Check if IMC has been reached step 40
), if NO, return to immediately before the routine. YES
In this case, the timer 5 is reset (step 41), and after the shifting roller motor M2 is turned off (step 42), the process returns to the position of flow (2) and the above-described control flow is re-executed.

Next, the flow of the subroutine: roller unit control (step 9) will be explained with reference to FIG. 34.

The function of this subroutine is to change the position of the offset roller unit to its reference position for right binding or left binding. First, check whether it is on the right side or not.Step 9
-1) If YES, right positioning switch PS24
Check whether it is ON (Step 9-
2). If No, that is, if the shifting roller unit is not located at the right binding reference position, the shifting roller unit drive motor M2° is rotated clockwise (step 9-3), and the process returns to immediately before this routine. In the case of YES, the said shifting roller unit drive motor M2° is set to 0FFL (step 9
-4), after rotating the shifting roller motor M2□ to the left (
Step 9-5) Return to the main flow.

In the case of NO in the right binding check routine, it is checked whether the left positioning switch PS23 is ONL (step 9-6).

If No, that is, if the shifting roller unit is not located at the left binding reference position, the shifting roller unit drive motor M2° is rotated to the left (step 9-7), and then the routine returns to immediately before this routine. If YES, the moving roller unit drive motor M. 0FFL (Step 9-8
), after rotating the shifting roller motor M2□ clockwise (step 9-9), the process returns to the main flow.

In the second embodiment of the present invention, the same operation is performed up to step 6-2 in the flowchart shown in FIG. 25 according to the flowchart shown in FIG.
The work is done. In step 6-3A of the flowchart of FIG. 36, the maximum size is selected, and the maximum size is selected according to the subflow: original size list of FIG. 26 and is set as the transfer paper size. That is, the original size data is A3. A4. In the case of three types of B4, the transfer paper size is set to A3.

In this second embodiment, according to the flowchart in FIG. 35, the same operation as in the flowchart in FIG. 23 already explained up to step 7 is performed, and then the subflow: AMS
Execute process selection step 8), LM-MO
Either DE or BT-MODE, whichever requires shorter copy processing time, is selected according to preset conditions (step 9). The details will be described later.

Thus, if LM-MODE is selected, subflow: LM-MODE process (step 10)
Execute and return to after the execution is finished.

Prepare for the next copy. Furthermore, when BT-MODE is selected, first, subflow: Priority variable magnification selection (step 11) is executed, and in the subflow: Variable magnification rate selection, one of the two determined variable magnification rates is executed first. The magnification is determined according to preset conditions. Details will be described later.

Next, the subflow: original initial set (step 12) is executed, and the RDH is operated to set the document matching the magnification determined in the subflow: priority magnification selection on the contact glass A-2.

Details will be described later.

Next, execute the subflow: BT-MODE process and return to step 13) after the execution is completed to prepare for the next copy.

Next, each subflow will be explained.

First, in the zero flow that executes the subflow: magnification data check (step 7-1) in FIG. 37, the transfer paper size determined by the subflow: transfer paper selection (I) (step 6) and the subflow: In the next step, a subflow: maximum magnification (
MAX-R) Minimum magnification (MIN-R) determination (Step 7
-2), and select the maximum and minimum magnifications from the magnifications determined by the subflow: magnification data. Next, execute the subflow: magnification list (step 7-3), Determine the magnification for each document under the conditions of the minimum magnification for the original and the maximum magnification for the document smaller than or equal to the transfer paper size, and then
A magnification list, which is magnification data for each document, as shown in FIG. 7 is created.

Next, FIG. 38 shows a subflow: priority magnification set flow.

First, the magnification difference between the current set magnification and the maximum magnification MAX-R is calculated, and the result is set as A (step 1). next,
Similarly, calculate the magnification difference between the current set magnification and the minimum magnification MEN-R, and set the result as B (Step 2) First,
Compare the magnitude difference between the A and B values Step 3), A≦B
In this case, the minimum magnification MIN-R is selected as the priority magnification (step 5), and in the case of A>H, the maximum magnification MAX-R is selected as the priority magnification (step 4) (step 5).

That is, by executing this subflow, a magnification closer to the current set magnification is selected as the priority magnification.

FIG. 39 is a flow of subflow: original initial set.

First, set the numerical value 411 #l to the control variable N (step 1) 6 Next, set the magnification data (N) on the magnification list as shown in Fig. 44 created in the subflow: magnification variable selection.
and said subflow: Determine whether or not the priority magnification determined in the priority magnification set matches (Step 2). If they do not match, multiply by N+1 (Step 3) and calculate the magnification data (
It is determined whether N+1) matches the priority magnification. This is executed until the magnification data and the priority magnification match, and when they match, move to the next step, send the value of N at that time from RDH,
The control register 5HIFT is set to determine the number of executions (step 4).

Next, output the Feed signal to the RDH (Step 5)
, then subflow: 0 flow that executes the original initial process (step 6) is a main body timing state control flow during the RDH original initial set. Next, the BUSY signal from RDH turns OFF.
In step 7), it is determined whether or not one document replacement operation has been completed.If the answer is No, the process moves to the next step.

Next, the Feed signal is set to 0FFL (step 8).
, "1" is subtracted from the register 5HIFT (step 9), and if the result is 110#, the execution of the five subflows is ended. If NO, return to the previous F sad signal flow and repeat the above flow (step 1
0), that is, by executing this subflow, an original that matches the priority magnification is set on the contact glass.

Next, FIG. 40 is a subflow: AMS process selection flow.

This flow is a flow for determining whether to execute the copy process in BT-MODE or LM-MODE.

LM-MODE means that when in AMS mode (automatically selects the magnification that matches the transfer paper and executes the copying process) for a bundle of originals of mixed sizes, the above subflow is executed for each original:
This is a mode in which one of the two magnifications determined in the variable magnification selection is selected and the copy process is executed. In addition, BT/MODE executes an AMS process with a shorter processing time by combining the RDH document feeding operation, temporary stacking on the intermediate tray A-17, refeeding from the intermediate tray, etc. mode. The details will be explained below.

In the AMS mode for a mixed size document bundle, first, a copy process is executed for the document size that matches the priority magnification determined in the subflow: priority magnification selection, and the copies are temporarily stacked on the intermediate tray A-17, and the copies are temporarily stacked on the intermediate tray A-17. Documents that do not match the priority magnification are skipped, and the feeding operation is executed from the RDH.

Change the magnification after copying the compatible size original.

Next, in the same manner as described above, a copy process is executed for the original size that matches the set magnification, skips the original that does not match the set magnification, and at the same time executes the feeding operation from the RDH, the copied copy is transferred from the intermediate tray A-17. By repeating this operation of aligning the pages of a copy by feeding paper, an efficient AMS process can be executed.

The details of this subflow will be explained below.

First, set the control variable N to the numerical value 11211 (step 1). Next, the magnification data for the first document on the magnification list in FIG. 44: magnification data (1) and the magnification data for the Nth document: magnification data (N ) are equal (step 2). If they are equal, add "1" to the variable N (step 3), then determine if N>LAST (
Step 4).

LAST is a numerical value indicating the order of the last manuscript on the magnification list. If the judgment result is No, magnification data (1
) and the magnification data (N) The process returns to immediately before the comparison flow (step 2), and if YES, sets the LM mode flag (F-LMMOD) that determines the execution of LM-MODE (step 5). .

If the soft decision result between the magnification data (1) and the magnification data (N) is NO, first add "1" to the variable N (step 6), and then determine N>LAST ( Step 7) If the 0 judgment result is YES, LM-MODE
Set the flag (F-LMMOD) (step 8
). If the judgment result of N>LAST is No, check the match between the magnification data (1) and the magnification data (N) again (
In step 9), if the determination result is No, the process returns to immediately before the N+1 flow. If YES, BT・MODE
BT-MODE flag (F-BTMO
D) is set (step 10).

Therefore, by executing one flow, if the magnification data suitable for each document are all equal, or if the two magnifications selected in the subflow: variable magnification selection are each at least one on the magnification list as shown in FIG. If the blocks exist as two consecutive blocks, LM-M
The ODE flag CF-LMMOD) is set. Otherwise, the DT-MODE flag (F-BT
MOD) is set.

FIG. 41 is a subflow: LM-MODE.

First, the copy number counter Co-C0NT and the original counter 0R-CONT are cleared to zero (step 1) (step 2). Next, an interrupt counter used as a control counter is initialized (step 3). In the next step, a subflow for executing the copy process in LM/MODE based on the interrupt counter:
Execute the M process (step 4). Next, RDH
In step 5), it is determined whether the BUSY signal is output from the RDH. If YES, the process returns to the previous step of this flow. If NO, the process returns to the next step. In the 0th step, the Feed signal is turned OFF.
After that (step 7), it is determined whether a document end signal is output from the RDH (step 8).

If the judgment result is No, subflow: Magnification change decision (I
) (step 9). This subflow checks whether the magnification data for the original in the original order indicated by 0R-CONT on the magnification list matches the current set magnification, and if it does not match, sets the 1 magnification change flag (F-CHRE). This is the flow to set.

Next, the setting of the F-CHRE is determined (step 10), and if it is set, the subflow of moving the lens to the magnification on the magnification list: magnification change (I)
Execute (step 11) and change the magnification ratio.
OR-CON T Add ``1'' Step 1
2) The above subflow: Return to the point immediately before the initial setting of the interrupt counter. Further, if the output determination result of the document end signal from the RDH is YES (7), then the CO-CON
'1. - Add "1" step 13), Go -
C0NT (7) Determine whether the contents match the copy number data set by the subflow: Operation KEY input check, that is, whether copying has been completed (step 14) 0 If the determination result is No, the above Subflow: Return to the point immediately before the initial setting of the interrupt counter, and if YES, execute the subflow: Copy process end (step 15) to execute the final processing of the copy process.

FIGS. 42 and 43 show the flow of the subroutine: BT-MODE.

First, the copy number counters CO and C0NT are cleared to zero (step 1).Next, the subflow: execute the intermediate stack mode set (step 2).The flow is as follows:
In order to temporarily stack the copied transfer paper on the intermediate tray, the branch SQL A-51 is turned on and preparations for receiving the transfer paper on the intermediate tray are executed. Next, an interrupt counter used as a control counter is initialized (step 3).

In the next step, a subflow of executing the copying process of stacking the copied transfer paper onto the intermediate tray: B
Execute T process (I) (step 4), then RD
A Feed signal is output to H (step 5). Then R
Step 6) Determine the output of the BUSY signal from the DH.
, in the case of No, the Feed signal is turned off (step 7), and in the case of YES, the process returns to immediately before the one-line determination flow.

Next, determine the output of the document end signal from the RDH (
Step 8): First, if the determination result is No, subflow: magnification change determination'(n) (step 9) is executed. This subflow determines the magnification data corresponding to the document set on the contact glass from the magnification list, checks whether the main magnification and the currently set magnification match, and if they do not match, then Set the magnification change flag (F-CHRE).6 Next, F
- Determine the setting of CHRE Step 10), NO
In this case, the process returns to the subflow immediately before the initial setting of the interrupt counter (step 3). If YES, RDH
Step 11) to output the F eed signal to R
Determine the output of the BUSY signal from the DH (step 12). The result of the 0 determination is N.

In this case, the F eed signal is set to 0FFL (step 1
3) The subflow: Return to the point immediately before the magnification change determination (■) (step 9). Also, if YES, RDH
Subflow for executing the main body time copy process in BT mode during feeding operation: BT idle process (
After executing step 14), the process returns to immediately before the BUSY signal determination flow (step 12).

Next, if the output determination result of the document end signal from the RDH is YES, first subflow: Magnification change (■)
(Step 15) is executed. This flow is a flow for changing the magnification to another magnification different from the current set magnification out of the two magnifications selected by the subflow: magnification select. Next, subflow: intermediate stack mode reset (step 16) is executed.

This flow cancels the receiving state of the copied transfer paper set in the subflow: Intermediate stack mode set in the intermediate tray. Next, execute the subflow: magnification change determination (■) (step 17), and if it is necessary to change the magnification, set the magnification change flag (F-CHRE), and in the next step, determine the flag ( Perform step 18).

First, if the magnification change flag is not set,
Said subflow: Interrupt counter initialization (step 19)
). Next, subflow: BT process (■)
(Step 20) is executed, the transfer paper is fed from the paper feed tray loaded with the transfer paper selected by the subflow: Transfer Paper Selection, and the normal copy process is executed.

Next, the process moves to the next step [F]. The flow after [F] will be explained according to FIG.

First, step 21 to output the F aed signal to the RDH.
), determine the output of the RDH BUSY signal.Step 2
2) If the BUSY signal is 0FFL, proceed to the next step and turn off the Feed signal (Step 23). Next, determine the output of the document end signal from the RDH. Step 24) If is not output, return to ■. If the signal is output, 1" is added to the copy counter Co-C0NT (step 25), and the process moves to the next step. In the next step, the contents of Co-C0NT are changed to the subflow: operation key input. The check determines whether the number of copies matches the set copy number data, that is, whether copying has been completed (step 26).

If the determination result is NO, the process returns to (2). In the case of YES, a subflow for executing the final processing (step 27) of the copy process: Copy process end is executed.

Next, in the determination flow of the magnification change flag (F-CHRE), if the determination result is YES, that is, F-CHRE
The case where RE is set will be explained. In FIG. 42, first, step 28 is performed to output the Feed signal.
), then executes the subflow: interrupt counter initialization (step 29), and then executes the subflow: BT process (Ill) (step 30). This flow does not execute the exposure, development, and transfer processes of the copy process.

Feed one sheet of copied transfer paper from the intermediate tray and eject it. It only executes processes. Next, the process moves to the next step O. The steps after O will be explained according to FIG. 43.

First, the Feed signal is set to 0FFL (step 31),
Next, the output of the document end signal from the RDH is determined (step 32), and if the signal is not output, the O
Return to. If the signal is output, "1" is added to the copy counter Co - C0NT (step 33), and the process moves to the next step. From the next step onward, similarly to the flow described above, the copy end is determined (step 26), and after the copy end, the subflow: copy end process (step 27) is executed.

In this way, according to each embodiment, the detection means detects the sizes of a plurality of originals placed on the automatic document feeder in advance before the copying operation, and the magnification is set for the transfer paper size selected by the selection means. A predetermined copy magnification ratio is set by the setting means, and originals of different sizes can be efficiently copied using this copy magnification ratio. In addition, by combining the stocking of copies into the intermediate tray and the refeeding operation from the intermediate tray using BT-MODE depending on the conditions, it is possible to further shorten the copying time and improve copying efficiency. .

Depending on each embodiment, for example, when copying, the smallest possible magnification ratio is automatically set to reduce the size of the copied document, or the magnification ratio is set as close to the same magnification ratio as possible to improve the reproducibility of the original. It can be increased.

[Effects of the Invention] As explained in detail above, according to the present invention, it is possible to shorten the copying time when copying originals of various sizes onto transfer paper of the same size, and to make changes according to the purpose. Efficient copying can be performed by adjusting the magnification.

[Brief explanation of the drawing]

1 to 21 are diagrams showing the configuration of each embodiment of the present invention. FIG. 1 is a front cutaway view showing the overall configuration, FIG. 2 is a front view of the operation section of the copying machine, and FIG. is an explanatory diagram of the exposure optical system,
FIG. 4 is an explanatory diagram of the detection means. 5 is an explanatory diagram of the reversing unit section, FIG. 6 is a perspective view of the reversing unit section, FIG. 7 is an explanatory diagram of the reversing unit section, and FIG. 8 is an explanatory diagram of the reversing unit section.
Figures to Figures 12 are explanatory diagrams showing the operation of the reversing unit section;
Fig. 13 is an explanatory diagram of the automatic document feeder, Fig. 14 is an explanatory diagram of the finisher, and Fig. 15(a) is an explanatory diagram of the finisher.
15(b) is an explanatory diagram showing the relationship between the entrance sensor and the paper size, FIG. 16 is an explanatory diagram of the reference change unit, and FIGS. 17(a) and (b). An explanatory diagram of the shifting roller unit, Fig. 18 is a control block diagram of the copying system, Fig. 19 is a control block diagram of the copying machine main body, Fig. 20 is a control block diagram of RDH, and Fig. 21 is a control block of the finisher. 22 to 25 are flowcharts showing the operation of the embodiment of the present invention.
The figures are flowcharts of each example, Fig. 23 is a flowchart of the first embodiment, Figs. 24 and 25 are flowcharts of the first embodiment, and Fig. 26 is the original size data of each embodiment. An explanatory diagram, FIG. 27 is an explanatory diagram of memory addresses of each embodiment, FIGS. 28 to 43 are flowcharts showing the operation of the embodiment of the present invention, and FIGS. 28 to 34 are flowcharts of each embodiment. . 35 to 43 are flowcharts of the second embodiment, and FIG. 44 is an explanatory diagram of addresses of magnification data in the second embodiment. A-1...Original, A-2...Contact glass, A-3...Exposure lamp, A-9...
...Photosensitive drum, A-11...Development unit, A-12...Paper feed tray, A-15...
...Fuser unit, A-16, old...Reversing unit, A2-1...Main switch, A2-6...
...Automatic paper selection display, A2-7...Copy magnification selection key, A2-12...Automatic magnification selection key. Figure 3 Figure 4 Figure 5 Figure 6 Figure 7 Figure 8 Figure 9 Figure 10 Figure 1/Figure To double-sided tray Figure 12 To double-sided tray Figure 14 Figure 15 Figure 16 Figure 24 Prisoner No. 25 Figure 26 Figure 27 Add (n), memory address Figure 36 Figure 37 C3 two Figure 38 Figure 39 C3]D Figure 40 Figure 43 Figure 44

Claims (7)

[Claims] (1) In a copying apparatus that is equipped with an automatic document feeder and performs variable-magnification copying by changing the copy magnification according to the size of the document and the size of the transfer paper, multiple documents placed on the automatic document feeder are Original size detection means for detecting the size in advance before copying; Transfer paper size selection means for selecting the size of the transfer paper; Sizes of the plurality of originals detected in advance by the original size detection means and the transfer paper size selection 1. A copying apparatus comprising: variable magnification setting means for setting a variable magnification for copying based on the size of transfer paper selected by the means. (2) In claim 1, there is provided a transfer paper size specifying means for specifying the size of the transfer paper, and the copy magnification ratio is determined from the specified transfer paper size and the document size detected by the document size detection means. A copying device characterized in that: (3) The copying apparatus according to claim 2, further comprising means for setting the copy magnification ratio based on the maximum original size detected by the original size detecting means. (4) The copying apparatus according to claim 2, further comprising means for setting the copy magnification ratio based on the minimum original size detected by the original size detecting means. (5) The copying apparatus according to claim 1, further comprising means for selecting a transfer sheet having a size closest to the size of the original detected by the original size detecting means. (6) In claim (5), the means for selecting a transfer paper having a size closest to the size of the original is means for selecting a transfer paper according to the largest original size detected by the original size detection means. A copying apparatus characterized by having: (7) In claim (5), the means for selecting a transfer sheet having a size closest to the size of the document is means for selecting a transfer sheet according to the smallest document size detected by the document size detection means. A copying apparatus characterized by having: