JPS58154854A - Display system for state variable of copying machine - Google Patents

Abstract

PURPOSE:To display various state variables stepwise economically through extremely compact constitution by displaying the various state variables of a copying machine stepwise each on one multicolor LED. CONSTITUTION:A feed paper cassette 1 is provided with a detector 2 for the presence of forms and a detector 3 for the remaining quantity of forms; and a toner bolt 5 is provided with a detector 6 for the remaining amount of toner and a photoreceptor belt 8 is provided with a potential sensor 10 which detects the deterioration state of toner. The outputs of those detectors are inputted to a control circuit having two MPUs and converted into digital values, which are read by the MPUs; and the control circuit drives respective LEDs provided under the display window of a console panel. With regard to, for example, the fatigue degree of the photoreceptor belt 8, the corresponding LED turns green to show that the belt is still usable, yellow to show that its replacement approaches, or red for warning of replacement, and others perform similar display. Thus, state variables such as the quantity of forms and the amount of toner are displayed stepwise economically through the compact constitution.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for displaying various status quantities of a duplex machine, such as the remaining amount of paper in a cassette, the remaining amount of toner, and the degree of fatigue of a photoreceptor in a duplex machine.

In conventional copying machines, these state quantities OIm are displayed as In- or 4IO2 values depending on whether they are present or not, or whether the use is slow. Because of this, I was able to grasp the amount of room in the trench where Kaede could move from the state of being allowed to not being present, and I was able to use a large number of □xt-medium K.
Situations such as running out of toner in the central tack cutter may occur,
There was a problem that forced user 1dxt- to be interrupted and staff to be replaced and resupplied. In addition, it is possible to use rounding to remove such inconsistencies, or to display state quantities step by step using a dot-v-dock screen such as a liquid crystal, but this requires many display elements and requires a large display surface. However, as they became larger in size, they also had the problem of being expensive.

It is an object of the present invention to solve the above-mentioned problems and to provide a display method that is extremely compact and economical and can display various state quantities in a copying machine step by step.

For this reason, the present invention was developed as a result of the development of Chikaushi Oshido Electronics, and uses a multicolor LLD that can display full color with a 9II HDIJD lamp to display state quantities in different colors according to their values. It is characterized by

Hereinafter, the invention will be explained with reference to the drawings.

FIG. 1 shows a block diagram of the mechanical parts of a copying machine according to an embodiment of the present invention, and is shown in a circle. 1 is a paper feed cassette arranged in two tiers, upper and lower. A paper presence/absence detector 2 is disposed to detect the presence or absence of paper, and a paper remaining amount detector 3 is disposed to detect the paper air end. Reference numeral 4 denotes a developing device, and a toner remaining amount detector 6 is disposed for detecting the remaining amount of toner in the toner belt 5 by detecting the amount of ns remaining in the toner belt 5 based on the output of a vibrator. 8 is an organic photoreceptor (OPC) belt, and in order to measure the potential on this belt, a potential of 1 sensor lO is set before the erase run 7"90.
As will be described later, deterioration of the organic photoreceptor (BEL) 80 is detected from this output.

In the above configuration, first, detection of the remaining amount of paper po in the paper feed tray y) 1 will be explained.

Figure 2 shows a conceptual diagram of paper presence/absence detection and near-end detection using the upper and lower two-stage paper feeders.The existence of paper is detected by detecting transmitted light.

The air end detects when the paper reaches 10 to 2° and 1°, so even if it cannot accurately detect each K sheet, J! Li0 Therefore, as shown in Figure 1, in the 10th to 20th sheets, Sui, Tosui, Chi 8-1, 7 Kuchi, Eta-3-
Even if you put out 1m and detect sppH1 mechanically, jj
As shown in Fig. 4-), vh o certain i is
It is also possible to use the automatic detection sensor 3-2 for detection.

Figure 4) shows its details, with 3-2a a light-emitting element and 3-2b a light-receiving element. The remaining amount of paper P can be detected by arranging it at a location where the number of sheets can be detected easily.

Let's talk about toner remaining amount detection.

FIG. S shows toner detection in which a light emitting element a1 and a light receiving element are arranged in pairs. Sensor 6-1 is near end gear, cent
6-2 is the detection of absence.

By the way, recently there has been an increase in the use of ultrasonic vibration elements and ceramic ivy to detect the presence or absence of toner.

As shown in Figure 1, this means that there is an element 6 under the toner bottle.
t - set aside, r depending on the change in density (amount of toner)
Since the input changes, the output is converted to MPU
If you input ftL to (microgrosse), it will be difficult to detect changes in the presence or absence of the air end. Its characteristics are shown in FIG.

This will be explained based on the degree of fatigue of the photoreceptor.

In FIG. 7, M is charged on the oPc belt 8 by the scorotron charger 12 and has a surface potential of 9 during running, and C is in good condition after being neutralized by the erase run f9 and the static elimination lamp 25. What is required as the final electrostatic potential is the surface potential at 1 in the figure, and the surface potential at 11. in the bright and dark areas. l.

The ambient temperature of the photoconductor increases and the temperature rises. As shown in Fig. 8, 1. /, 1. /, and contrast between dark and bright areas cannot be obtained.

FIG. 9 shows the rise and recovery of the photoreceptor O residual potential due to continuous copying. Here, t is one hour of continuous copying, v
, represents the residual potential, and t represents the standing time. From this figure, it can be seen that if a certain number of copies are continued, the residual potential does not stop at the starting point I Km, but gradually increases as time passes. This residual potential Vp increases as the number of copies continues to increase. That is, although it depends on the type of photoreceptor, -
As the day and night pass, the residual potential decreases and recovers to a value close to the initial value, but as the number of copies increases and fatigue increases, the residual potential increases, and when it exceeds a certain value, it is no longer possible to obtain an appropriate contrast. .

It's time to replace the photoreceptor at Jin's place. At this point, the machine provides a display and audio notification to replace the photoreceptor.

The increase in residual potential is due to fatigue of the photoreceptor and is related to the intensity and accumulation of light irradiation. z for surface potential 600°VK
If a residual potential of oov or more remains, it can be assumed that the photoreceptor has reached the end of its life.

It is said that the lifespan of the paper becomes useless after 20,000 copies (no contrast can be obtained).If the change is constant, there is no surface potential sensor, and the number of copies (total ) and issued a warning for 4JL. In other words, when it is possible to run up to 1,000 sheets,
ill, time to exchange 000 to 20,000 pieces, 2
If it exceeds 2,000 sheets, a warning will be issued to replace it.

In the case of a copying machine equipped with one potential sensor as shown in FIG. 1, the output from the sensor 10 is expressed as 4/1
) can be converted and recognized by Whip U.

The surface potential sensor 110 will now be explained.

Figure 1O shows a surface potential sensor 1G with nine types, 101
is a metal seat, 10bti printed circuit board, lO・ is a mounting base, 104 is an oscillation element, lo・ is a tuning fork, 10f is an electrode, 1
0g is the measurement window, and 10 is the connector. The entire structure is covered with a metal shielding member to remove the influence of external electric field O. The metal shield member has a measurement window 10g (opening), and the measurement window 10g is opposed to the exposed leg of the OPC belt 8 to determine the potential tm. When the tuning fork lO is attached in an electrically conductive state and the p1 oscillation element circuit (FWT OP amplifier) is connected to I[I, a DC voltage is applied to the radio wave terminal,
Perform Maro J11 vibration at the tuning fork 10@0 mechanical resonance frequency. One tip of the tuning fork 10 during vibration constitutes a TE, . . . /f electrode, and the vibration of the tuning fork 10 causes a movement of opening and closing the tog at a constant cycle.

Based on the surface charge of the photoreceptor, the electric force is measured! 11110
I entered the measurement type 1iK class in one pass, and the analog electrode ゛10 f located between the measurement window and the fence constant electrode O cut this electric force by chaining it with the tuning fork lO・OII. ! 〉、#
IIji! The am potential on the electrode 10fK photoreceptor 8 and Te1.
The difference between A-electric @10f (same potential as the shield member potential) generates an alternating current voltage with an amplitude proportional to the voltage.

In the configuration shown in FIG. 1, the OPC belt 8 is a belt-shaped photoreceptor that serves as a magazine, and the upper part of the machine shown in the figure can be opened as shown by the dotted line in the figure. This so-called Wanilo exchange is now possible with Ezo. Copy key O
Due to the NK, the halo 1" 7 ? 77" 1 is lit, and the charging scorotron charger 12 is applied. The no-rod lamp 11 is placed on the document table 13 and irradiates nine documents.
Phaino consideration - Lens 14t-tO optical axis passes through OPC
It is placed on belt 8. The Halodan lamp 11, Phino lens 14, high voltage power supply 15, and Scorotron charger 12 are mounted on one carrier, and the document surface is scanned in the direction of the arrow.At that time, 0PC
-4 The carriage is scanned over the belt 8 in a stationary state to form an image. When the O image formation on the OPC belt 8 is completed, the carrier () stops applying O to the charger, and the I%H
Turn off the f/2 ring, turn home 4 times with 2x O mode,
Return to next page.

When the image formation is completed, the OPC belt 8 is moved in the direction of the BO force, and side and end quenching is performed by the erase slang 9 on the end face. This is a manuscript, l
e (paper size is also acceptable) is detected, light tS is applied to areas other than the image forming area, and the am potential is lowered, and the excess area (other than image forming area) is
) φ for the purpose of not allowing cars to attach. The photoreceptor then passes through the iA section 4, and toner is attached to the latent section at key points where the charge O is present, converting it into He. On the other hand, the transfer paper in the upper or lower cassette 1 is fed by a paper feed roller 16 and brought into contact with the OPC belt 8 by a register roller 17 at precise timing. At this point, the OPC belt 8 is visualized with toner, and the image on the belt is transferred onto the transfer paper. Transfer charger 18 is accurate! In Ying,
A slightly higher voltage (-51 kV for the charger and -6.0 kV for the transfer charger 18) is applied to the charger 12 to attract the image toward the paper. At the same time, the electrostatic field of the transfer paper is removed so that the electrostatic field of the transfer paper is removed easily.
is marked 21aS. The sheets are separated at the corners of the belt photoreceptor (this is called curvature separation), and the good sheets on which the image has been transferred are led to the fixing device 20 and fixed by the roll heater 21 . When copying the back side, the guide plate 22 stores the paper on both sides (on the paper tray 23). When not copying on both sides, or when copying on the back side is completed, the paper is ejected by the guide plate and stored in the car 24. Furthermore, after the transfer and separation are completed, the segments of the OPC belt 8 are irradiated with light in a static elimination run/25 to eliminate static electricity, and the fur brush of the cleaner 26 is applied to the OPC belt 8. The toner is scraped off, cleaned, and waiting for image formation again.
- After the cycle ends, the OPC belt 8 is rotated several times and the separation charger 19 and the static elimination run f2 are
5. Fully turn on the erase slang 9 to remove residual charges and memory from the belt and clean the belt surface. Furthermore, the OPC belt 8 shown in the configuration diagram in the figure has two segments, making it possible to form two images.

Figures 11(a) and 11(a) show their control circuit diagrams.
No. 1 → i.e. g 2 (a) MPU I 30 and No. 2 in figure
-) Figure MPU H31. This MPU I 3
0K is connected to the paper presence/absence detector 2, paper remaining amount detector 3, toner remaining amount detector 6, and potential sensor 1G shown in FIG. 1 via an analog signal (digital converter (hereinafter referred to as ABC) 33). On the other hand, the MPU I 31 has a voltage control circuit 3.
3, multicolor LID 34 to 38, i.e. photoconductor IJD 34, which indicates the degree of deterioration of the photoconductor, toner LID 3 S, which indicates the remaining amount of paper in the car, upper cassette y, which indicates the remaining amount of paper in the upper cassette, LEo 3 g, Similarly, lower blade dragon, ToLE
D 37 and input voltage display LID 38 are connected.

Therefore, the various state quantities detected by the paper presence/absence detector, the paper remaining amount detector 3, the toner remaining amount detector 6, and the potential sensor IOK as described above are converted into dinotal quantities by the MPU 130, and then sent to the MPU 130. be included. Furthermore, MPU
These data are processed and displayed in summer 30.
The xD terminal is transferred to the RXD terminal of the MPU 1 31, and further output to the voltage control circuit 33 and output to each LID 34~
38 is driven. That is, FIG. 18 shows the voltage control circuit 33.
Since the specific circuit diagram of MPU II B 1 is shown,
output port 12. The 8-bit digital data representing various state quantities is converted into an analog signal by each digital-to-analog converter (hereinafter referred to as DAC), and is added to an operational amplifier fOPK, and its output is Each of the LEDs 34 to 38 is driven.

Figure 13 shows the structure of the LICD, (&)
is blue LED 39, (1)) is full color IJD?
In the figure, 39& is an electrode, 39b is a p-type STC epitaxial layer, 3911 is an n-type SIC epitaxial layer, and 39dFim!1ilC
A substrate, 39 is an electrode, and 41 is a multi-cut IJD that develops a color from red to edges. To explain this LED, the blue LID is one in which StC bonds are formed on a silicon substrate crystal. This uses the same liquid phase epitaxial crystal growth method as EI's conventional red and green LieD, and was made possible by the development of a unique plate-shaped crystal manufacturing technology to obtain this substrate crystal. blue L
Since ED uses light emission by forward current of P'' coupling, the drive voltage is 3.iV, and multi-power j-LID emits light at a low voltage of around 2V, which is similar to the conventional LEo. While connected to an IC, it can be driven by the same power source as the conventional L-type.I9. Highly pure - A clean 1kPn single crystal layer is formed on the single crystal substrate with impurities added at the optimum time. Round, high luminous efficiency, blue LED #i*
It is said that a practical level system of rmcl/20 rmmu can be obtained. Pull color LED is a multi-color LED whose emitted color changes automatically from blue LED and red to the edge.
By combining with

Its specifications are shown in the table below.

Table 1 720=! Changed to i55mmKf. It is characterized by the fact that it emits monochromatic light, which is determined by the forbidden band width of the emission wavelength of the LED light-emitting material, and does not involve heat, like a tungsten lung.

In addition, with the configuration shown in Figures 11(a) and 11(a), M
PUs 30 and 31 are Intel's 8-bit, two-bit MPU 87 S 1 TE, ROM 4K, 4 (
1111 bytes of RAM, 3 channels of counter, 1 channel of external interrupt, Kl? It is a powerful MPU that includes three inputs. When a crystal is used and MH3t is attached, the execution time is 1 unit/stack lμIn. Event details.

The tie-inder O-tare, rear/arm pulse, and synchronization pulse for starting the sequence are input to the TI. ζ0 counter a 1
@k' y) Te, 64. OG OOAru J t
J? It is possible to perform counting on the hardware, regardless of program execution. Therefore, in the past, an interrupt was input to the output terminal of the copier's output pulse to form a counter using no-artware, but with this, an interrupt occurs every time a pulse is input. However, it often interferes with the execution of boograms.

This tendency becomes stronger as the pulse speed increases (for example, if a pulse with a period of sOμm is input, an interrupt occurs every 50 #s**), and the execution time of the program programm becomes slower and malfunctions occur. Thanks to the clever reading of Kiming no Rusu, this problem has disappeared. The AC zero clock signal is input to the external interrupt signal. MPU II 751
Interrupts can be detected by falling pulses by setting a flag in the register, and in this case, the zero cross pulse is detected and an internal counter is activated to control the power of the module. Take control. Automatic control of the heater and exposure rung can be performed using only the MPU without using any special circuit. Another external side) included■1 includes /
- Eight input lines of port 1 (Pl) are input by taking OB. This is often accompanied by a charge counter, and the interface with these is the D
There are many cases where ART is connected and used using the Deinoche 7 method. When many external devices are attached,
The MPU 130K requests permission to use the line, and in the ninth step to obtain the right to use the line, it sends an acknowledge signal to the Pl as if it were an external device. MPU l
When an interrupt occurs in the y line, 30 performs a Plt-4-ring to determine where 19 comes from.

In this example, when attaching an external device, the MPU
l Port 31, 1a) UI via DCN2-1
It is input to 3G P. When MPU INO recognizes it, it sends an address code from UART), MPU
The use of the line is carried out between the
transfer data. When connecting a sorter, plater, ADF, charge counter, or other OCR, use this method. Therefore, the MPU I 31 transfers key input information, and the MPU I 30 transfers the sequence status, lubricant motor commands, and display data. 8
751 alone is 4K no threat 010M.

I have 128 RAM t-, but I can't move with just this, so I use an external KIO/ROM 87 S m and a battery to power, air, f and my friend CMO8RAM3) 8
416 is placed. This leaves iLOM at 6 bytes and RAM at 2 + 8 bytes (with the exception of external RAM 4 bytes in the keycard). The speech synthesizer (APC) itself has a 32-bit speech memo 9 and is capable of 26s@a speech. This is not enough for guidance.

Add bit fLOM to 128 externally for a total of 100
161 speeches are possible. This system automatically detects the original density and original size (9 turns), and has a 4-pin, 8-channel ADC.

Inputs from the 4 7 otosensors are input to this, and the M
ADI conversion is performed according to a command from the PU, and the density and size are detected. The remaining four channels detect dirt on the photoreceptor. It also has an 8-pin ADCt for automatic control, which is a 4-channel IC. This detects the temperature detection electronics for fusing heater control, the remaining amount of toner, the surface potential sensor, and the effective value of ACIQOV, and then lays out the AC power supply. Do a range of activities. In addition, power fluctuations are detected and indicated by one full-can LED lamp. A digital AVR is formed. An infrared detector is installed to detect the presence of a copying machine operator, and a human body detection signal is input so that a sound is emitted. The calendar temporary hand IC is a 24-pin IC with a reference frequency of t.
ildg 1768 kHz, 1. OS'kmx
.

It has built-in data for hours, minutes, seconds, month, day, and day of the week that can be recorded arbitrarily from 4 and 19 MHz. f″-Tal formula is M
It is input and output via the PU pass line. Therefore, this data can also be output to the machine's display channel, making it possible to display a clock.
-You can also insert the date by placing an LCD (liquid crystal) facing the document (in the margin of the manuscript). The LCD can display the hour hand function, an example of which is shown in Figure 1S. As shown in Figure 1 (O), when directly copying onto the photoreceptor, the LCD is KIIKI controlled to copy in the opposite direction.

In other words, just mirror the letters and make them look like 9, and write OP.
C) Press the image 42C formed on the belt 8 so that it is placed on the rear end 43. In addition, as shown in FIG. 17, a date LCD is installed at the corner of the contact glass 13 (in this case, a normal non-inverted character t-type is displayed).

In the figure, MPU I 31 is equipped with a speech recognition device. This system uses a key as a key, and analyzes the sictrams of the already registered voice and the input voice, and if they match, the system allows copying. Conventionally, it used to be necessary to use a key switch or key card, but it is now possible to register individual voice characteristics by voice input and use it only for unsatisfied users without using special keys etc. I can do it. In addition, it is possible to set, start, strike, and start the number of sheets by voice without using the numeric keypad, and when used with a voice synthesizer, it is possible to interact with the machine by voice. FIG. 18 shows the system configuration of Interstate's voice recognition chip VRCO08o. In the figure, the voice recognition chip vRC detects the state sequence of voiced and unvoiced sound parameters in the input amemata phrase, and compares this sequence with the pre-registered @rei storage sequence. Recognize speech. The state sequence and recognition meter is 1 step, f R
It is stored in QM. As shown in the figure, the audio M fiber unit is provided with a c-Mos non-volatile RAM to hold the registered audio and data. Furthermore, a black signal is generated from Tl of the MPU if 31 in the driver of the pulse motor shown in FIG. 11 to perform scan control of the optical system. T.
From this, a clock noise is generated for lighting the fluorescent lamp with high chest waves, and dimming control is performed. MPU II in Figure 11
It is not necessary to place MPU I 31 and MPU I 30 on the same glint board; as in this case, MPU I 31 executes the job of displaying, controlling input key switches, and voice recognition, so it is necessary to place the operation part on one corner of the glint board. I placed it in 4 storms. Further, the memory card is a memory for extracting diagnostic data of the machine, and the usage status of the machine, the cause of failure, the usage status of toner, paper width, etc. are recorded one by one.

A service person comes to collect data at regular intervals and collects data to ensure machine illumination.A type of logging is performed.

FIG. 19 shows the arrangement and configuration of the operation display/monitor 50 of the copying machine of this embodiment. ,
Display window 52, &3.54 for displaying the remaining capacity of the lower cassette.
There are 55 display windows that display the magnitude of the power supply voltage, and below each of the display windows 51 to 55 there are the nine multicolored LEDs as described above.
34-3s are arranged.

As a result, the degree of fatigue of the OPC belt 8 is displayed in accordance with the degree, for example, in "green" when it is ready for use, "yellow" when it is nearing the time for replacement, and "red" as a replacement warning.

Similarly, the remaining amount of toner in the toner mail 5 and the remaining amount of paper in the upper and lower cassettes 1 are displayed as 1'' when rung is possible, and as ``yellow 1'', end #'i, ``red 1'' when air end is possible.

Further, the input voltage is displayed as "1 green" as suitable from 95V to 110V, "1 yellow" from SSV to 95Vfi, and "1 red" as inappropriate when it is below aSV and above 10V.

Additionally, on the mother nail 50, as shown in the figure, there are an ambient light detection element 56, a variable magnification display 57, a variable magnification key 58, a jam display 59, a speaker 60, an interrupt display 61, and an interrupt key 62.
, multi-copy display 63, multi-copy key 64, copy permission display 65, copy prohibition display 66, number of copies display 67, number of copies overflow display 68, dimming light indicator 69, dimming key 7
0. A clear/stop switch 71, a start switch 72, a power switch, a cheer 3, an entry key 74, a guide imaichi 75, a numeric keypad 76, and a date key 77 are arranged. Dimming key 70ti +, - available, + ONL.

If you continue, you will go from 1 to 5 in the bright i direction, making 77 steps at intervals of one foot. If - continues to be turned on, it will similarly shift to the dark side from 5 to 1. This K determines the degree of dimming O1i. The variable magnification key S8 is used to reduce or enlarge one area, and this is done by moving the lens using a mirror motor.

There is 12011.701G, 80-. Discount key 6
2 is 10, where continuous copying is temporarily interrupted and another copy is made, and the copy information, magnification, dimming (cut, paper size, paper cassette, etc.) selection (top, bottom) and Copy Kaku/
This allows the tuna information to be recalled and the copy to be continued in the same way as before. This matter is disclosed in Kokokukan Sho 51-65606 (Method for controlling the number of copies per copy in a copying machine).

The multi-copy key 64 and en) 9-1-74 are as described above. When the date key 77 is turned on, the year, month, day, and time are copied onto the copy.

When the guide key 75 is activated, the status of the turtle's machine is notified. Therefore, while copying is in progress, the set number of copies and the number of copies to be made are announced. If it is before copying, the entered number will be announced. Overflow display 68 indicates r-
It lights up automatically when the tasset is done. Even when the number of copies is 2 digits or more, it is displayed with a flash. The ambient light detection element s6 detects the brightness ahead of Miliffl on the channel and controls the brightness of the true hydrogen element.

As the detection element, a transistor such as @d-1 solar cell or company 7r) is used. In this case, the variable magnification display 67 and the dimming display 6
9. The copy display 6S, copy prohibition display 66, etc. may be displayed in different colors using III multicolor IJD. Furthermore, as shown in Fig. 11, since a battery is used for the memory bar, air, and f in this example, this LEp is directly connected to this voltage detection to check the battery voltage.
It may also be used for

As described above, according to the present invention, by using a multicolor LID, it is possible to perform a multifunctional display with a small number of i display elements, simplify the operation display section, and improve operability. be exposed.

[Brief explanation of drawings]

FIG. 1 is a structural diagram of a copying machine to which the present invention is applied, and FIG. 2 is a method for detecting remaining paper amount Il! 3 is an explanatory diagram showing an example of a paper air end detection method, FIG. 4(a) is an explanatory diagram showing an example of a paper air end detection method, and FIG. 4Cb) is an explanatory diagram showing an example of a paper air end detection method. An enlarged view of the detection part, an iris diagram is an explanatory diagram of the method for detecting the remaining amount of toner, FIG. 6 is an explanatory diagram of another example of the method of detecting the remaining amount of toner, FIG. 7 is an explanatory diagram of the surface potential of the photoconductor, and FIG. 8 is a diagram of the photosensitive member Figure 9 is a diagram of the relationship between body surface potential and temperature or time, Figure 9 is a time course diagram of residual potential, Figure 1O is a configuration diagram of the surface potential needle, Figures 11(a) and 11(a) are Figure 1. O copy machine o+
etn circuit diagram, Figure 12 is a detailed diagram of the voltage control circuit in Figure 11, Figure 18(a) is an explanatory diagram of the blue LED,
Figure 3) is a full-color explanatory diagram of IJD O, Figure 14 is a diagram of the relationship between relative emission intensity and wavelength, Figure 1s is an explanatory diagram of an example of LCD display, and Figures 16 and 17 are explanatory diagrams of date formation by LCD. , Figure 18 is the audio I & 1gw & circuit diagram, 1st
FIG. 9 is an explanatory view of the copying machine shown in FIG. 1. l...Paper feed cassette, 2...Paper presence/absence detector, 3.
...Paper remaining amount detector, 4...Developer, 5...Toner meter, 6...Toner remaining amount detector, 8...Organic photoreceptor belt, 9...Erase slang, 30.31・・−
MPUI, II. 32...Mu DC133...Voltage control circuit, 34-3
8...IJD, 50...Rito Nell, 51-55...
Fresh water window. (Figure 21, Figure 3, Figure 5) Figure 7, Figure 8, Figure 10, Figure 1, Figure 14, Figure 14, A- Figure 15, Figure 16, Figure 17

Claims (1)

[Claims] One multicolor LED is used for each state quantity in a copying machine.
A copying machine state quantity display method characterized by displaying state quantities in stages.