JPH01219851A - Copying machine - Google Patents

Abstract

PURPOSE:To improve operability of the title machine by arranging an operating area for an original of a specific size separate from that for originals of other sizes on an operating panel or a console panel. CONSTITUTION:A copying machine is provided with one or plural paper housing means 21 and the operating panel 24, wherein an operating area 22 which gives instructions to copy an original of a specific size bigger than that of any other paper housed in the paper housing means 21 onto these paper by reducing its size, is arranged separate from the operating area 23 for originals of other sizes. Namely, two independent areas are provided on the operating panel 24: one is an area to handle an original of size A-2 and the other is a handle originals smaller in size than size A-3. Thus, operations such as setting rates of reduction and enlargement are performed separately, which prevents operational errors.

Description

DETAILED DESCRIPTION OF THE INVENTION "Field of Industrial Application" The present invention relates to a copying machine capable of copying from an original larger than the maximum size of copy paper that can be set in the main body of the copying machine.

``Prior Art'' Currently, various large-sized drawings are copied using large-sized copying machines that are capable of specifically copying such drawings. Such a large-sized copying machine can copy relatively large-sized originals such as large-sized drawings at the same size. Further, in many cases, a function for reducing and copying the original document is also provided, and by using this function, it is possible to create a reduced drawing etc. for filing into an A4 size file, for example. Such filing is very useful when searching for reference materials such as drawings created in the past when designing circuits and various devices.

By the way, special copying machines that make copies of large-sized originals such as drawings are often located only in special locations such as departments where drawings are issued due to space and cost considerations. . Therefore, for example, a designer who draws drawings at an individual design site may have to travel far away to a large copy machine even if he wants to file a copy of the drawing in his own data file. .

Another problem is that when a large-sized copying machine is busy with tasks that should be performed on a priority basis, such as printing out drawings, copies cannot be made quickly.

Therefore, copiers have been proposed that can make copies of originals larger than the maximum size of copy paper that can be used. In this copying machine, the maximum size of copy paper that can be set is, for example, A3.
However, larger documents such as A2
For size originals, copies can only be made in reduced size. By reducing the maximum size of copy paper in this way, we can reduce the size of the main body of the device, and by achieving a low price, it is possible to install this type of copying machine in various locations such as design sites. It is possible.

FIG. 13 shows the main parts of the console panel of this proposed copying machine. This copier has a maximum of A2
Copies can be made from a size original, and copy paper up to A3 size can be used. Therefore, the console panel 11 has A2 size, A3 size
A document size specification area 13 in which keys 12 for specifying various document sizes such as A3, 84, A4, and 85 are arranged;
A paper size designation area 15 in which keys 14 for selecting various types of copy paper such as size, 84 size, A4 size, and 85 size are arranged is arranged. This copying machine, like many recent copying machines, allows you to specify the size of the original and the size of the copy paper, and the copying machine can set a reduction ratio that matches these.

A magnification setting area 16 is also provided on the console panel 11 for setting a magnification. The setting range of the reduction ratio is 50% to 200%, and the setting range is 50% to 200%.
For example, by selecting some fixed magnifications set in advance or by operating the key 18,
You can set any magnification in increments.

``Problem to be Solved by the Invention'' Now, in the conventionally proposed console panel 11 shown in FIG. 13, the operator sometimes makes incorrect specifications during operation. That is, the operator may specify, for example, A2 size as the original size from the original size specification area 13 and 85 size as the copy paper size from the paper size specification area 15. However, even if the reduction ratio is set to the minimum 50%, it is impossible to reproduce all image information on an A2 size original onto 85 size copy paper. In other words, although it is not possible to copy such a combination, console panel 1
1, there was a possibility of designation.

Next, although it is naturally possible to set the reduction ratio to 1:1 with a normal copying machine, this copy machine cannot make a 1:1 copy when the original size is set to A2 size. I couldn't do it. This is based on the fact that the maximum allowable copy paper size for this copying machine is only A3 size. However, when specifying the magnification in the magnification specification area 16, it is incorrectly set to 100.
There was a possibility to specify % (same size).

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a copying machine that can prevent operational errors caused by handling originals larger than the maximum size of copy paper that can be set. It is in.

"Problems to be Solved by the Invention" In the present invention, as explained in principle in FIG. Operation area 2 for instructing an operation to reduce and copy a document of a predetermined size larger than any of the sizes onto these copy sheets.
2, the copying machine is provided with an operation area 23 for originals of other sizes and an operation panel 24 arranged independently. That is, to explain using the above example, on the operation panel 24 (
i) An area for handling A2 size originals, and (ii) A
By providing two independent areas for handling originals of 3-size or smaller size, operations such as setting the reduction ratio can be performed separately, thereby preventing operational errors.

"Example" The present invention will be described in detail below with reference to Examples.

"table of contents" First, a table of contents in the description of the copying machine of this embodiment will be shown.

(1) Overview of the copying machine (2) Overview of the circuit configuration of the copying machine (3) Console panel (4) Specific circuit configuration (4-1) Around the photoreceptor drum (4-2) Optical system (4-3) ) Fixing device (4-4) Pilling counter (4-5) Power supply (5) A2 original mode (5-1) Display lamp lighting control (5-2) Reduction from A2 size to A3 size (5-3) Reduction from A2 size to A4 size (6) Other document modes (1) Outline of copying machine FIG. 2 shows the external appearance of the copying machine of this embodiment. The main body of this copying machine 31 includes a copying machine main body 33 placed on a dedicated cabinet 32, and three types of cassette trays 34 to 3 removably arranged on this copying machine main body 33.
6, and an output tray 37 for outputting copy paper.
It is made up of. A platen cover 38 that can be opened and closed is attached to the upper part of the copying machine main body 33, and a platen glass is arranged below it, although it is not shown in the drawing. This copier is A2 according to Japanese Industrial Standards.
Since it is possible to copy up to a size original, the platen glass has a size slightly larger than the area of the maximum size original.

A console panel 39 is arranged on the upper surface of the copying machine main body 33 in front of the platen cover 38. Although this console panel 39 will be specifically explained later, a liquid crystal display board is incorporated together with various key switches for input. Various information such as the number of copies and jams (paper jams) are displayed on the liquid crystal display board.

A manual feed tray 41 is attached to the right side of the copying machine main body 33 in the figure. When manually feeding copy paper, the manual feeding tray 41 is folded down and the copy paper is manually fed from there. In this copying machine, in addition to the manual feed tray 41, three types of cassette trays 34 to 36 are provided as described above, so that copy paper can be supplied in four systems. In this case, the maximum size of copy paper that can be set in the cassette trays 34 to 36 is A3 size. Similarly, the maximum size of copy paper that can be manually fed from the manual feed tray 41 is set to A3 size.

FIG. 3 shows an outline of the internal structure of this copying machine. A platen glass 51 for placing an original (not shown) is arranged at the upper part of the copying machine main body 33. Directly below the platen glass 51, a light source 52 made of a halogen lamp is reciprocated by a carriage (not shown), and the original is exposed and scanned. The light beam reflected from the strip-shaped exposure area is reflected by the first to third mirrors 53 to 55, and then enters the optical lens 56. The light beam that passed through the optical lens 56 is
After being reflected by the fourth mirror 57, the exposure position 59 of the photoreceptor drum 58 is irradiated.

The photosensitive drum 58 is rotated at a constant speed in the direction of the arrow (clockwise) by a main motor, which will be described later, and its surface is uniformly charged by the action of the charge corotron 61. This charged area is the exposure position 5
When it reaches 9, it is irradiated with light reflected from the original, and the static electricity is selectively removed to form an electrostatic latent image. After unnecessary portions of this electrostatic latent image are removed by an interimage lamp 62, it is developed by a developing device 63 to create a toner image. This toner image will be transferred to a copy sheet (not shown) by the action of transfer corotron 64 and black corotron 65. At this time, the toner remaining on the photosensitive drum 58 is neutralized by the pre-clean corotron 66 and then scraped off from the drum surface by the doctor blade 67. When the cleaning of the photoreceptor drum 58 is completed in this manner, the surface of the drum is charged again by the charge corotron 61 and is ready for the next exposure operation.

By the way, as already explained, this copying machine is equipped with four systems of paper feeding mechanisms. three cassette trays 34
A size sensor 71 is arranged in front of each of the storage positions in which trays 36 to 36 are inserted, and is adapted to determine the size of the copy paper stored in these trays. There are various methods for this determination. In the copying machine of this embodiment, each of the cassette trays 34 to 36
A size sensor 71 detects the unevenness specific to the paper size at the tip of the paper and turns on or off each switch connected in series to each resistor of a circuit in which a plurality of resistors are connected in parallel. .

As a result, a resistance value corresponding to the detected size of copy paper is output as analog data.

A CPU (central processing unit), which will be described later, inputs this analog data and determines the size of the copy paper.

A no-paper sensor 72 is located near each size sensor 71.
is located. Furthermore, feed rollers 73 are arranged above the front portions of the cassette trays 34 to 36, respectively. The feed roller 73 feeds the cassette trays 34 to 36.
It is used to feed copy paper from the selected tray.

The no-paper sensor 72 is a sensor that detects that there is no copy paper in the cassette tray when the feed roller 73 is not feeding the copy paper.

On the other hand, a feed roller 73 is also arranged at the tip of the manual feed tray 41, and feeds manually fed copy sheets one by one into the main body of the copying machine at a predetermined timing. The manual sensor 75 is a sensor for detecting that manual insertion has been performed. On the condition that the manual sensor 75 detects copy paper for one second or more, the CPU recognizes that copy paper is set in the manual feed tray 41. This is to prevent the copying operation from starting in such a case, since the operator may pull out the copy paper immediately without manually feeding it.

The manual solenoid 76 is used for gate control to control the start of copy paper feeding. The manual solenoid 76 is positioned to prevent the passage of copy paper, and the gate opens when the copy cycle begins. As a result, driving force is transmitted to the feed roller 73 of the manual feed tray, and feeding of the copy paper is started.

Now, the copy paper selectively sent out from these four systems of paper feeding mechanisms advances along a conveyance path 77 shown by a broken line in the figure. Then, the arrival of the copy paper is detected by a feed sensor 78 arranged at a place where these conveyance paths 77 are integrated.

The conveyance of the copy paper does not necessarily start accurately due to slippage of the feed roller 73 or the like. Therefore, the conveyance of the copy paper is temporarily stopped by the registration gate 79, and the conveyance timing is adjusted. The regigate solenoid (not shown) is demagnetized and the regigate 7
9 opens, the copy sheet begins to be conveyed and passes between the photoreceptor drum 58 and the print corotron 65, where it receives a toner image transfer. The copy paper on which the toner image has been transferred is conveyed by a conveyor belt 81, and is passed through a heat roll 82 and a pressure roller 8 provided on the exit side thereof.
Pass between 3. The heat roll 82 is heated by a built-in quartz lamp, and the toner image is heated and fixed onto the copy paper here. The copy paper after the fixing is discharged onto the discharge tray 37 by a discharge roll (not shown).

Note that the three systems of cassette trays 34 to 36 used in this embodiment do not necessarily have to accommodate copy sheets of different sizes. For example, the two cassette trays 34 and 35 may be trays that accommodate copy sheets of the same size. In this case, when the selected cassette tray runs out of copy paper, the other cassette tray is automatically selected and copy paper is continuously fed.

In addition, in this copying machine, the registration gate (registration gate) 7 is demagnetized by the registration gate solenoid.
9 is opened, so that when the register gate 79 is closed, the solenoid is energized. Therefore, there is an advantage that positional fluctuations of the registration gate 79 in a state where copy paper is blocked from passing are reduced, and the leading edge of the copy paper can be accurately positioned.

(2) Overview of the circuit configuration of the copying machine FIG. 4 shows the main parts of the circuit configuration of the copying machine, centering on the CPU (central processing unit).

This CPU 91 includes an AD converter, USART (Un
iversal 5ynchronous / Asy
chronousReceiver Transmi
It is equipped with functions such as a timer/counter, a human output board, etc., and is connected to the following parts via a bus 92 or via a terminal 93 for analog human power.

(a) Those connected via the bus 92.

(i) ROM 94: This is a read-only memory that stores each single program of this copying machine, and has a capacity of 32 bytes in this embodiment.

(ii) RAM 95: This is a random access memory that temporarily stores various data, and has a capacity of 2 bytes in this embodiment.

(iii) Non-volatile memory 96: Random memory backed up by a battery (not shown)
This is access memory and stores data that should not be erased even when the copier is turned off. Such data includes, for example, (a) a set amplifier value for adjusting the registration of copy paper, (b) a set value for the amount of erasure of the leading edge of the image by the inter-image lamp 62 (FIG. 3), (c) Fine adjustment value of vertical and horizontal magnification when copy magnification is set to same size, (d
) Adjustment values of various parameters performed on the production line of copying machines, (e) History data recording situations such as copying machine jams, (f) Data specifying cassette trays to be used preferentially, etc. can.

(iv) Keyboard/Display LSI 97: This is a large-scale integrated circuit provided in the console panel 39. This will be explained in detail later.

(v) Timer/counter LSI 98: This is a large-scale integrated circuit that sets timing for controlling the driving of the main motor 101 and carriage motor 102. Here, the main motor 102 includes the photosensitive drum 58, the conveyor belt 81, and the heat roll 82 shown in FIG.
This is a motor used to drive motors such as motors. Carriage motor 1
02 is the light source 52 and optical lens 5 also shown in FIG.
This is a drive source for reciprocating a carriage (not shown) for scanning 6, etc.

(vi) I10 controller 103: This is an input/output controller that inputs various digital data via the filter circuit 104 and controls the drive of various components via the driver circuit 105. Here, various switches and sensors are connected to the filter circuit 104, for example. Also connected to the driver circuit 105 are clutches (not shown) that control the driving of the four systems of feed rollers 73 shown in FIG.

(b) Connected to the CPU 91 via the analog input terminal 93.

(i) Light quantity sensor 107: In this copying machine, a monitor lamp (not shown) for monitoring the light quantity is arranged in parallel with the light source 52. The intensity of the light from the monitor lamp is detected by the light intensity sensor 107, and the intensity is output from the terminal 93 to the CP as analog data.
It is input to U91 and processed.

(ii) Temperature sensor group 108: This copying machine is equipped with a soft touch sensor (see FIG. 8 later) that lightly contacts the roll surface in order to detect the surface temperature of the heat roll 82 shown in FIG. It is being

Analog data output from such sensors is input to the terminal 93 and processed in the same way.

(iii) Size sensor group 71: This is a sensor group for detecting the size of copy paper stored in each cassette tray 34 to 36 shown in FIG. This copying machine is provided with a cassette tray as a standard specification that individually accommodates the following six types of standard size copy paper. Of course, it is also possible to use other foreign-spec cassette trays such as legal size.

(a) Japanese Industrial Standards B5 size paper feeds horizontally (b) Japanese Industrial Standards B5 size paper feeds vertically (C) Japanese Industrial Standards A4 size paper feeds horizontally (d) Japanese Industrial Standards A4 size paper feeds vertically (e) Japanese Industrial Standards A3 size paper horizontal feeding (f) Japanese Industrial Standards A3 size paper horizontal feeding As many types of cassette trays are selected and used, four sensors were placed on each cassette tray to distinguish between them. If conventional data processing methods are used, the CPU 91 will require a maximum of 12 input ports. In addition, the number of connectors and the number of cables constituting the harness increase, causing problems in terms of device cost, miniaturization, and reliability requirements.

Therefore, in the copying machine of this embodiment, the size sensor 71 consisting of a resistor and a switch is prepared in each storage location of the cassette tray as described above, and the data of the combined resistance value depending on the on/off state of each switch is converted into CPL as analog data.
Send to I91. This makes it possible to identify up to 16 types of cassette trays.

(c) Others The reset circuit 109 is connected to the reset terminal 111 of the CPU 91. This reset circuit 109 is
When the CPU 91 runs out of control or is initialized, a reset signal is supplied to the CPU 91 to reset it.

(3) Console Panel FIG. 5 shows the console panel used in this copying machine.

A menu display board 12 is provided on the upper part of the console panel 39, etc.
1 are arranged, and the contents of each panel part are displayed in characters. Below, these panel parts will be explained in order.

(a) A2 original mode: This copying machine can copy up to A2 size originals. However, since copy paper can be used up to A3 size, when an A2 size original is used, the image information of the entire original cannot be reproduced unless it is reduced. When the A2 original mode button 123 is pressed, the two display lamps 124 disposed above the button turn on one by one, and one of the two modes is selected.

Here, the display lamp 12 of the item marked rA2→A4J
4 lights up, A of the cassette trays 34 to 36
A tray containing 4-size copy paper is selected, the reduction ratio is set to 50%, and a copying operation from A2 size to A4 size is selected. On the other hand, rA2→
When the display lamp 124 for the item labeled A3J lights up, the tray containing A3 size copy paper is selected from the cassette trays 34 to 36, the reduction ratio is set to 70%, and A2 size copy paper is stored. From there, copying work to A3 size will be selected.

Of course, if the operator does not press the A2 original mode button 123 and sets the reduction ratio to 70% and selects the cassette tray to be of size 3, then rA2→A3J
Copying operations similar to those can be performed. The "A2 original mode" panel section is provided for the purpose of making this kind of work easier and more error-free.

(b) Original size: When the original size button 125 is pressed, the four display lamps 126 arranged in a row will turn on one by one.
Originals from 85-size to A3-size are selected in order. As will be explained later, this device also allows you to select the copy paper size, and when both selections are made, the reduction ratio is automatically calculated and set based on these relationships. ing.

(c) Reduction/Enlargement: This column is provided with a magnification display section 128 that displays a reduction ratio from 50% to 200% in 1% increments. The reduction ratio can be specified using the 2 button located below this magnification display section 128.
2 arbitrary % specification keys 129 or fixed size specification keys 13
This can be done by operating 1.

When the upper key of the arbitrary % designation keys 129 is pressed, the magnification increases by 1% up to a maximum of 200%.

Also, if you press the key located at the bottom, at least 50%
The magnification decreases by 1% until

There are four display lamps 1 above the fixed size designation key 131.
32 are arranged. These are 1-00%, 63%, 121% and 135 as fixed magnification, respectively.
This is for displaying percentage. Fixed size specification key 1
31, these display lamps 132 are selected one by one.

Note that the three types of magnification other than 100% can be freely changed by the operator according to the content of the work.

(d) Paper tray: A tray selection button 134 is arranged in this column.

When the tray selection button 134 is pressed, three types of display lamps 1 each displaying the three cassette trays 34 to 36 are displayed.
35 light up one by one, and the selection status of the tray is displayed. To the left of these display lamps 135, six display lamps 136 are arranged to display the type of copy paper selected at that time.

Here, "A4/B5 horizontal" is used to indicate that a cassette tray with A4 or 85 size copy paper set in the horizontal direction has been selected, and these cassette trays are used. (cases) are rare, so we have decided to display them uniformly. Depending on the copying machine, these may be displayed individually. Furthermore, a "non-standard" indicator lamp 136 is provided below "A4/B5 horizontal", which indicates that a cassette tray containing copy paper of a size other than these sizes has been selected. It is for the purpose of

(E) Copy density: Two copy density buttons 138 are provided in this column. Five types of display lamps 139 are arranged above these buttons 134, each standardizing five levels of copy density, and one of these is selectively displayed by button operation, and that copy density is selected. It looks like this.

(F) Display/Key Operation This column includes a display section 141 and a key operation section 142 in which various keys are arranged.

(a) Display section 141: A display section 144 for displaying the selection status of the cassette trays 34 to 36, a display section 145 for the number of copies, and a display section 146 for various statuses of the copying machine are arranged here. Display section 146
Examples of characters displayed include "paper jam,""ready to copy,""pleasewait," and "wrong cassette." These characters are displayed by selectively lighting up light emitting diodes provided at the back.

Note that "cassette wrong" is a blinking character that is displayed when there is a possibility that the combination of original size, copy paper size, and reduction ratio is abnormal, and a copy error is expected. Even when this display is displayed, copying can be performed.

(b) Key operation section 142: The following various keys or buttons are arranged here.

(i) Page continuous shooting button 151: This button is used to realize the page snapshot function.

Here, the page speed copying function refers to the ability to print 2 pages like a bound manuscript.
This is a function that divides a two-page spread document into two pages one by one and copies them in sequence. When the page continuous copying button 151 is pressed, the display lamp 152 placed near it lights up, and the - Indicates that the page continuous copying function has been selected.When the page continuous copying function is selected, the reduction ratio will automatically become 100% (same size), and the “A4/B5 horizontal”
The cassette tray containing copy paper is selected.

(11) Program button 153: This is a button for setting the copying machine to a mode used when writing various data to the nonvolatile memory 96. Such data includes, for example, data for setting the tray to be selected preferentially (priority tray) from among the three types of cassette trays 34 to 36, and data for setting the power supply when no copying work is being performed. There is data on the time required to execute a power saving function that shuts off part of the system.

At the time when the copying machine is in the initial state when the power is turned on, or when the copying machine returns to the initial state for some reason, the CPU 91 stores non-volatile memory for priority handling items such as the cassette trays 34 to 36 and the reduction ratio. 96 is checked, the console panel 39 is displayed accordingly, and the copying machine is set to the instructed state. When the program button 153 is pressed, a display lamp 154 disposed near the button lights up to indicate that the copying machine is set to a mode for making various settings.

(iii) All clear button 156: This button is used to return each mode to its initial state.

(1■) Numeric keypad 157: These are numeric keys and are used to set the number of copies, etc.

(v) Interrupt button 158: This button is used to temporarily interrupt the copying operation currently being performed and enable the copying operation under other copying conditions. When the interruption ends, the copying operation can be resumed under the previous copying conditions.

(vi) Stop button 159: This button is used to interrupt copying.

(vii) Start button 161: This button is used to start copying.

A display lamp 162 for displaying start reservation is arranged near the start button 161. When the start button 161 is pressed while the words "Please wait" in the display section 146 are lit, an instruction to start the copying operation is reserved and the display lamp 162 is lit. In this lighting state, the copying operation will automatically start when the text "Please wait" in the display section 146 goes out and "Ready to copy" is displayed instead.

As explained above, many keys and light emitting diodes (display lamps) are arranged on the console panel 39.

Therefore, if all these components were individually connected to the CPU 91, the number of ports would be insufficient. Therefore, in this embodiment, a keyboard/display LSI 97 (FIG. 4) is used as a solution to this problem. The keyboard display LSI 97 constantly monitors key presses.

Information as a result of monitoring is then transmitted to the CPU 91 in time-division as 8-bit data. Also, CPU9
The number of light emitting diodes (display lamps 124, 126, 132, 136, 139
．． 152, 153, etc.), control is performed to turn on these light emitting diodes or keep them in the off state.

(4) Specific circuit configuration Next, the specific circuit configuration of this copying machine will be explained.

(4-1) Around the Photoreceptor Drum As shown in FIG. 3, parts such as a charge corotron 61 are arranged around the photoreceptor drum 58. Since a general explanation has already been given regarding these, here the interimage lamp 62 and the parts that were not explained earlier will be explained.

(a) Inter-image lamp: Figure 6 shows the structure of the inter-image lamp. The inter-image lamp 62 consists of 80 light emitting diodes 221 arranged in a - column and one plastic lens 222 arranged in front of these. The plastic lens 222 has an aspherical convex portion at a position corresponding to each light emitting diode, so that even when adjacent portions of the light emitting diodes 221 emit light, the photosensitive drum 58 (see FIG. ), care has been taken to ensure that the intensity of light does not become uneven even in the boundary area between them.

The 80 light emitting diodes 221 are controlled to be turned on and off at predetermined intervals by a 5-bit signal output from the CPtJ91. At this time, the 30 left and right light emitting diodes 221 are controlled to turn on and off with the same signal state at their symmetrical positions, and the 20 light emitting diodes 221 in the center are turned on at the same time with the same signal state.・It is controlled to turn off. For this reason,
The 80 light emitting diodes are controlled on and off using 31 types of control signals, and can be controlled using 5-bit data as described above.

(b) Toner sensor: This is a sensor (not shown) for determining whether it is necessary to replenish toner in the developing device 63.

(c) Dispensmoke: The developing device 63 is provided with a toner box (not shown) for storing toner. The motor used to stir and replenish the toner in this toner box (
(not shown). When an increase switch (also not shown) is pressed, this dispense smoke is forcibly driven to increase the amount of toner.

(d) High voltage power supply (HVPS): This is a power supply (not shown) used to create a parallel electric field inside the developing device 63 and improve the reproducibility of the solid portion (solid black portion) of the original. .

(E) Full toner sensor: Used toner is collected by the doctor blade 67, and this is a sensor (not shown) for detecting whether or not enough toner has been collected in the collection container.

(4-2) Optical system FIG. 7 shows the circuit portion related to the optical system. This copying machine is capable of scanning originals up to A2 size. Therefore, the tube length of the halogen lamp constituting the light source 52 is set to be somewhat longer than the length of the A2 size document in the lateral direction. The light source 52 is configured to reciprocate over a distance slightly longer than the longitudinal direction of an A2 size document as the carriage moves by driving the carriage motor 102.

The scanning speed of the carriage motor 102 is controlled by the reference clock output from the timer/counter LS198 shown in FIG. Ru. Further, the start and stop of rotation and the rotation direction of the motor are controlled by a start signal and a rotation direction instruction signal outputted from the ■/○ controller 103 also shown in FIG. Since these clocks and signals are all output from peripheral LSIs according to instructions from the CPLI 91, it can be assumed that drive control of the carriage motor 102 is substantially performed by the CPU 91.

The registration sensor 251 is a sensor used to detect the scanning position of the carriage. That is, a registration sensor 251 is fixed near the upper left end of the copying machine main body 33 shown in FIG. 3, and when the carriage is located near the scanning start position, an actuator (not shown) attached to this turns this sensor on and off. It is supposed to be done. This detection output of the register sensor 251 is taken into the CPU 91,
Timing control is performed using this timing as a reference to determine when to start transporting the copy paper, the scanning length of the carriage, and the like.

The lens/mirror sensor 253 is a sensor that controls the movement of the optical lens 56, mirror 53 (Fig. 3), etc.
It is composed of one detection element. The lens/mirror motor 254 has also been changed from a conventional copying machine in which the optical lens 56, mirror 53, etc. are driven separately to a type in which they can be driven in common. The optical system fan 255 is a fan for cooling the optical system and removing heat from the platen glass 51.

Among these optical system components, the light source 52 and optical system fan 255 are driven by an AC (alternating current) driver 257 of this copying machine. Further, the carriage motor 102, the registration sensor 251, the density control sensor 252, the lens/mirror sensor 253, and the lens/mirror motor 254 are
It is designed to be driven by a C (direct current) power source.

(4-3) Fixing Device Next, the circuit configuration of the fixing device will be explained. The fixing device is shown in a portion of FIG.

The fuser lamp 261 is arranged inside the heat roll 82 (FIG. 3), and the fixing control element (SSR) 262
The control is performed by

The surface temperature of the heat roll 82 is measured by the soft touch sensor 26.
3, and the temperature information is transmitted to the CPU 91. The user exit sensor 264 is an element for detecting that the copy paper that has passed between the heat roll 82 and the pressure roller 83 is ejected toward the paper ejection tray 37 without being accidentally caught in them. A fixing control element (SSR) 262 is driven by an AC driver 257, and a soft touch sensor 263 and a user exit sensor 264 are driven by a DC power source 258.

(4-4) Pilling counter As shown in Figure 8, this copying machine has a pilling counter 2.
71 is provided. The pilling counter 271 is a counter used for collecting copy fees, etc., and is designed to count the total number of copies made.

(4-5) Power supply Next, the power supply relationship will be explained with reference to FIG.

The copying machine main body 33 is connected to a 100V (volt) commercial power source. Also 115V60H for overseas use
It is also compatible with z and 220V50Hz power supplies. The power supplied from the outlet 281 is connected to a 15 ampere circuit breaker 282 and a noise filter 2.
83 to reach the main switch 284. The output side of the main switch 284 is the interlock switch 2.
85, an AC driver 257, and a fixing control element 262.
and is supplied to the DC power supply 258 as power.

The AC driver 257 supplies power to the following components at predetermined timings.

(B) Light source 52 and optical system fan 255 (Fig. 7) (B) Fuser lamp 261 (Fig. 8) DC power supply 258
(b) Interlock switch 285 (Figure 8) supplies power to the following components at predetermined timings.
AC driver 257 (Fig. 8) (c) High voltage power supply (d) User exit sensor 264 (Fig. 8) (e) Fixing control element 262 (Fig. 8) (f) Accessories 286 (
(FIG. 8); Here, the accessories 286 include, for example, a coin kit that allows copies to be made using coins, and key counters and key coders for copy management in each department.

(G) Pilling counter 271 (Figure 8) (H) X-
Port fan 287 (FIG. 8): This fan is a vacuum fan for sucking copy paper conveyed through a conveyance path called an X-port.

(Su)Interimage lamp 62 (ff3ffi)
(J) Carriage motor 102 (Fig. 7) (l) Registration sensor 251, lens mirror sensor 253, and lens mirror motor 254 (Fig. 7) (W) Increase switch Now, in this copying machine, the As shown in FIG. 9, an original of maximum A2 size, which is slightly smaller than this size, can be set on the platen glass 51. However, the third
The maximum size of copy paper that can be accommodated in the illustrated cassette trays 34 to 36 is limited to A3 size at most due to the size of the photosensitive drum 58 and the like. In order to enable the operator to easily make copies by reducing the size from A2 size to A3 size or from A2 size to A4 size under such circumstances,
This copying machine has several features.

FIG. 10 shows the main parts of the console panel. The console panel 39 has an "A2 original mode" display area 121-1 and an "original size" display area 121-2.
There are two menu display areas. rA
When you press the A2 original mode button 123 in the "2 original mode" display area 121-1, the two display lamps 124-1 and 124-2 arranged above turn on one by one, and then these lamps turn on. Both lights go out.

By pressing the A2 original mode buttons 123 in sequence, the above operations are repeated in order, and the two reduction modes are selected and these modes are not selected.

If the A2 original mode button 123 is pressed continuously, the display lamp 124 will turn on in the above order every 0.5 seconds.
-1.124-2 switching control is performed. Here, there is a state in which these reduction modes are not selected because A
This is because when copying from an original of a size other than 2 originals, it is necessary to cancel this rA2 original mode.

FIG. 11 shows how the lighting control of the above-mentioned indicator lamps is performed. When the A2 original mode button 123 is pressed (step ■; Y), the CPU 91 uses the RAM 9
5 and determines whether the "rA2 original mode" is currently set (step 2). If it is not set, turn on the display lamp 124-2 and select A.
Display the reduction status from 2 size to A3 size (
Step ■), set it to its reduced mode (Step ■
).

On the other hand, if "rA2 original mode" is set (step 2; Y), it is determined whether this is a reduction mode from A2 size to A3 size (step 2). If so (Y), this mode is canceled and the display lamp 124-2 is turned off (step 2). Then, by lighting the display lamp 124-1 instead, the reduction state from A2 size to A4 size is displayed (step 2), and the reduction mode is set (step 2).

If it is determined in step (2) that the reduction mode is not from A2 size to A3 size (N), it means that the reduction mode from A2 size to A4 size is currently selected. Therefore, in this case, this mode is canceled and the display lamp 124-1 is turned off (step
). In other words, this means that the "rA2 original mode" is canceled. Thereafter, the display lamp 124-2 is turned on to display the reduction status from A2 size to A3 size (step 2), and the reduction mode is set (step 2).

In addition, the indicator lamp 124-1.124-2 is used in the following cases:
All lights are turned off.

(b) When the power of the copying machine is turned on: This copying machine can be interpreted as a copying machine that has the function of copying up to A3 size originals, with the added function of handling A2 size originals. . Furthermore, if the device is located in a normal section of an office, it is considered that smaller size documents are handled more often than A2 size documents. Therefore, in the initial state when the power of the copying machine is turned on, the "rA2 original mode" is set to be in the released state. However, the initial setting data written in the nonvolatile memory 96 may be adjusted so that the "rA2 original mode" is set in the initial state when the power is turned on.

(b) When the all clear button button 156 (Fig. 5) is pressed: When the all clear button button 156 is pressed, each mode is returned to its initial state, so the display lamp 124-L1
The display of 24-2 will also be cleared.

(c) When auto-clear occurs: After the operator operates the console panel 39 to set copy conditions such as the number of copies and copy density, the set conditions are automatically cleared after a predetermined period of time has elapsed. is cleared. This is to prevent a situation in which a person later handling the copying machine makes copies under completely unexpected copying conditions.

(d) When an interruption is accepted: Even if an interruption of another copying operation occurs during a copying operation, it is expected that the copying operation will be performed under conditions different from the previous copying conditions. . Therefore, in this case as well, the display lamps 124-1 and 124-2 (1) are turned off as in the case of auto clear.

When the interrupt ends, the corresponding light emitting diode is turned on again.

(e) When the power saving mode is canceled: After the power saving mode, which is a mode in which consumption of various power sources is suppressed, is canceled, the state is the same as the initial state, and the display lamp 124-1.124 -2 are all turned off.

(v) If the nib program button 153 (FIG. 5) is pressed when returning from the program, the initial value of the copy density, etc. can be set. Therefore, when this program button 153 is pressed, no copying operation is being performed. Therefore, when returning from such a program, it is assumed that the copying machine is in its initial state, and rA2
``Original mode'' was set to be canceled.

(g) When the reduction ratio is changed: When the reduction ratio is changed, a new situation will occur, so
It was treated in the same way.

(H) When the size of copy paper is changed: The same applies when the size of copy paper is changed, since a new situation occurs.

(S) When the original size button 125 is pressed: When the original size button 125 is pressed, an original size smaller than A3 size is specified, so naturally the ``rA2 original mode'' is canceled.

(5-2) Reduction from A2 size to A3 size Display lamp 124-2 for item marked rA2-A3J
When lit, the magnification is 70% (70.7% to be exact)
, and A3 size copy paper is selected.

At the same time, an image size lamp (not shown) placed near the platen glass 51 is turned off, and all four display lamps 126 in the "original size" display section 121-2 are also turned off. The image size lamp is a lamp used to display the maximum size of the original in relation to the size of copy paper.

If A3 size copy paper is selected and none of the three types of cassette trays 34 to 36 are trays for A3 size copy paper, "" will appear on the display section 146 shown in FIG. The words ``Wrong cassette'' will be displayed. On the other hand, if the paper in the cassette tray containing A3 size copy paper runs out, the words "Replenish paper" on the display section 146 are displayed by lighting. However, if multiple cassette trays are set for A3 size copy paper, one
When the A3-size copy paper in one tray runs out, the A3-size copy paper in the other tray is automatically set to be supplied, and the text "Replenish paper" does not light up.

(5-3) Reduction from A2 size to A4 size Display lamp 124-1 for item marked rA2→A4J
When lit, the reduction ratio is set to 50% and A2 size copy paper is selected.

At the same time, an image size lamp (not shown) placed near the platen glass 51 is turned off, and all four display lamps 126 in the "original size" display section 121-2 are also turned off.

If A4 size copy paper is selected and none of the three types of cassette trays 34 to 36 are trays for A4 size copy paper, "" will appear on the display section 146 shown in FIG. The words ``Wrong cassette'' will be displayed. On the other hand, if the paper in the cassette tray that stores A4 size copy paper runs out, the words "Replenish paper" on the display section 146 are displayed in an illuminated manner. However, if multiple cassette trays are set for A4 size copy paper, one
When the A4 size copy paper in one tray runs out, the A4 size copy paper in the other tray will be automatically supplied, and in this case, the text "Replenish paper" will not light up. .

In the copying machine of the embodiment described above, the "rA2 original mode"
Although it was decided to reduce the size from A2 size to A3 size or A4 size, it is of course possible to add a reduction mode to other sizes, for example, to 84 size. Further, in the embodiment, a copying machine capable of feeding copy paper of a maximum size of A3 has been described, but it is needless to say that the present invention is not limited to this.

For example, in a copier that can handle copy paper up to A3 size, the operation area for larger size originals such as A3 size and A2' size is set to A3.
This will be made independent of the operation area for originals of 4-size or smaller size. The magnification of the document is not limited to that of the embodiment, and the maximum size of the document that can be handled will vary in relation to the magnification.

``Effects of the Invention'' As described above, according to the present invention, the operation area for a special size document is disposed on the operation panel or console panel to be distinguished from the operation area for other size documents. This gives the image of a copying machine with additional functions, making it easy to use even for general operators who make regular copies. In addition, for operators working with large-sized documents, the operation areas are separated, improving operability.
It also becomes possible to save the effort of calculating the reduction ratio in relation to the copy paper.

[Brief explanation of the drawing]

Figure 1 is a block diagram showing the principle of the present invention, Figures 2 to 1
Figure 2 is for explaining one embodiment of the present invention, of which Figure 2 is a perspective view showing the external appearance of the copying machine, Figure 3 is a schematic configuration diagram showing the outline of the internal structure of this copying machine, Fig. 4 is a block diagram showing the main parts of the circuit configuration of the copying machine, Fig. 5 is a plan view of the console panel, Fig. 6 is an explanatory diagram showing the structure of the inter-image lamp, and Fig. 7 is the optical system of the copying machine. FIG. 8 is a block diagram showing the circuitry related to the system. FIG. 8 is a block diagram showing the circuit configuration of the fixing device, power supply section, etc. FIG. 9 is a plan view showing documents of various sizes placed on the platen glass. FIG. 10 11 is a plan view showing the main parts of the console panel, FIG. 11 is a flowchart showing how the display lamps are controlled, and FIG. 12 is a plan view showing various character information displayed on the display section of the console panel. FIG. 13 is a plan view showing the main parts of a console panel of a conventionally proposed copying machine. 21...Paper storage means, 22.23...Operation area, 24...Operation panel (console panel), 3
4-36...Cassette tray, 39...
・Console panel, 51...Platen glass, 91...CPU. 94...ROM. 95...RAM. 121...Menu display board, 123...A2 original mode button, 124.1
26...Display lamp, 125...Document size button. Applicant Fuji Xerox Co., Ltd. Agent
Patent Attorney Umeo Yamauchi Figure 1 Mc13 Figure 2 Figure 4 Figure 7 Figure 8 Figure 9 Figure 10 Figure N, Figure 12 Figure 11 June 3, 1988 Commissioner of the Patent Office Kunio Ogawa 1. Indication of the case 1988 Patent Application No. 044468 2 Name of the invention Copying machine 3 Person making the amendment Relationship to the case Patent applicant name (name) Fuji Xerox Co., Ltd. 4 Agent ■ 1 5 1! (320)0969 Facsimile (320)0952 May 31, 1986 6 Subject of amendment

Claims (1)

[Scope of Claims] One or more paper accommodating means for accommodating copy paper, and a method for reducing and copying an original of a predetermined size larger than any size of the copy paper stored in the paper accommodating means onto the copy paper. 1. A copying machine comprising an operation panel in which an operation area for instructing operations to perform is arranged independently from an operation area for other sizes of originals.