JPS59159149A - Reproducing and outputting device of image - Google Patents

Abstract

PURPOSE:To prevent the time required for paper feeding/discharging of an ADF (automatic direction finder) or stand-by scanning of an AE from causing the reduction of a copying speed by providing the titled device with a display switching means in accordance with the movement of a moving member necessary for image reproducing. CONSTITUTION:In the image reproducing/outputting device, a drum is precleaned by a cleaner until the 1st original starts to be scanned to stabilize the drum pre-exposed by a lamp 32. When the drum is left as it is at the time of jam, the AE mode and the restoration of the number of copied sheets to non-AE1 are inhibited, but two hours after, a power supply is turned off and display or the like is erased. In said constitution, the time required for the paper feeding/ discharging of the ADF or the stand-by scanning of the AE can be prevented from causing the reduction of copying speed.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a copying apparatus having an automatic document exposure 6 (hereinafter referred to as AE) device, particularly an automatic document exposure device. 1lIJ document feeder etc.
(hereinafter referred to as ADF'). Conventionally, in this type of apparatus, the optical system moves forward when performing preliminary scanning for AE, but during that time it performs AE measurement, scans the density of the original (M), holds that value, and returns to the home position C in a steady state. At a home position (hereinafter referred to as home position B) located at a different point from the home position (hereinafter referred to as home position A), the optical system turns back and changes from forward movement to backward movement. Then, it returns to the home position A again, and from there, the light emitting jtLyr sub-control of the document exposure lamp is turned on in accordance with the density of the document obtained by AE measurement, and image formation is often performed.

However, in this case, while the document is being fed and discharged from the ADF, preliminary scanning for determining AEi11III cannot be performed.

Therefore, the time required for paper feeding and ejection of the ADF or preliminary scanning of the AE may lead to a decrease in copy speed.

The present invention eliminates the above-mentioned conventional drawbacks, and at the same time, by making the position of the home position B variable in the preliminary scan for A measurement, it is also possible to change the AE measurement width or position.

FIG. 1 shows this embodiment.

100 is the main body of the Tayoiso, and 200 is an external additional device (ADF in this case) connected to it. The main body of the copying machine and the ADF are connected by signals shown in FIG.

33 is a photosensitive drum, which rotates around fff at the time of the arrow. 50 is the main motor, including 33 and 44
All drives, including the fixing device, 41 carrying unit, 3s paper feed roller, etc., and the optical system drive including the original illumination lamp 21, are performed by a chain (not shown).

Further, 31 is a high voltage charger. As a result, an electric charge is charged on the photosensitive drum 33, and an electrostatic latent image is formed by being exposed to light at point 29. After passing through the developing roller 34 in the developing device 29, toner adheres and becomes a visible image. be done.

Then, the toner image is transferred to the transfer paper by I/A to the transfer charger 40. Prior to this, the cassette 37 is The paper is fed by the rotation of the paper feed roller 38 from
The paper is fed out by the registration rollers 39. The exposure of this 1 [miniature manuscript is illuminated by the 21 manuscript illumination lamp, and the optical system including 21 scans the manuscript in the direction of the red stamp, and passes through the reflection mirrors 24, 25, 27, and 28, and the lens 26 to expose the 33 light. An image is formed at point A on the drum, and exposure is performed over the entire surface of the document.

48 is a registration sensor. This sensor causes the registration roller 39 to start rotating, so that the leading edges of the images are aligned as described above. 22 and 23 are reversal sensors, and 22 B c is the home position B for preliminary scanning during λE measurement, and at the same time, the cassette 37 is a small size (for example, B5, A4 size, etc.)
This is also the optical system inversion position. On the other hand, 23 is large size (
For example, when the optical system is inverted (A3 size, etc.).

After the transfer, the photosensitive drum 33 is cleaned by the cleaner brush 36 of the cleaner section 35, and then the eraser 32 is used.
The next? On the other hand, the transfer paper on which the toner image has been transferred is separated from the /lj3 optical drum and transferred to the paper conveying section 41.
It is transported and headed for the fixing device.

At this time, the conveyance continues while being drawn downward by the suction fan 42. The image is fixed by the fixing roller 44, and the completed fubiji is then ejected onto the paper ejection tray 47 by the paper ejection roller 16.

45 is a web motor that winds up a web for cleaning the fixing roller 44. 43 is a power transformer;
o is a heat exhaust fan that releases heat from the 21 illumination lamp.

Next, the names and operations of each part of the ADF sensor 1 will be explained.

First, when the operator places a document on document tray 1, A
F original sensor 1o senses the original.

Here, "AI" means - of the aml that constitutes ADF'Y
It is a gold item equivalent to 300 in Figure 1,
It performs one function together with 200, and 200 is DF.
AF+DF is called AF+DF as one system function, that is, ADF. AF
stands for auto feeder, and Din'! , is an abbreviation for document feeder. In such a machine, when a document is loaded and the ADF start switch D in the operation display section is turned on, the pickup roller 2 is lowered. After a predetermined period of time has elapsed, the AP motor (not shown) rotates, and the topmost document among the stacked documents begins to be conveyed. When the AF timing sensor 1 detects the leading edge of the document being conveyed between the separation belts 3 and 4 moving in the direction of the arrow, the pickup roller moves it upward. The document is then conveyed from the AF section 300 to the DF section 200Δ.

When the leading edge of the document is detected by the DF document sensor 2, the separation belt 4 is pushed down. Further, the operation of the separation belts 3 and 4 is stopped. Then, after a predetermined period of time has elapsed, the operation of the AF section is stopped.

Further, in DFff1s, when the document sensor 2 detects the outer edge of the document, the presser roller 5 moves downward and presses the document. Then, the DF motor (not shown) starts rotating, and the DF section presser roller 5, conveyance roller 6, belt drive roller 15. Turnlow 516. The discharge roller 8 rotates. As a result, the document starts to be transported at a speed 1+ faster than that of the AF section.

When the document passes the conveyance roller 6, the leading edge of the document is detected by the J sensor 13, and from this point on, clock pulses generated by a clock generator (not shown) synchronized with the DF motor are counted. Then, the presser roller 5 is moved upward. Next, the original enters between the full-face belt 7 and the original platen glass 20 and is conveyed by the full-face belt 7.

When the entrance sensor 13 detects the trailing edge of the document, if there is a document to be fed next in the AF section, feeding of the next document is started as described above. This document is also waiting at the position of the DF document sensor 12. Also, when the number of pulses generated from the clock generator reaches a predetermined value, the DF motor is stopped and a C
Sends 0PY 5TAR'l' signal.

By the way, 49 is a potential sensor for measuring the surface potential of the photosensitive drum 33. Generally, the surface potential of a photosensitive drum is as shown in FIG. The drum surface potential is disturbed by the corona group 11L up to Vo 'A51, and dark decays until exposure point 4). At the 11 light point A, the document is illuminated by the document illumination lamp 21 and is exposed to light corresponding to 75 degrees of the document, which is generated by reflection. At this time, if the document is light, the amount of reflected light is large and the surface potential drops to approximately VL shown in FIG. On the other hand, if the document is D-sized, the amount of reflected light will be small and the surface potential will not drop much. Therefore, by reading this surface potential, it is possible to determine the darkness of the document. Next, FIG. 5-1 shows a circuit diagram from the measurement of the drum surface potential to the control of the original illumination lamp per light minute. In Figure 5-1, it is Q525&”11 pair, R501 and C
Together with 501, it constitutes an integrator. As a result, the drum surface potential is integrated over a certain period of time, and based on this value, the fourth
A curve as shown in the figure is obtained, and a lamp control wJ voltage VL i NT for controlling the light intensity of the document illumination lamp is created. Further, 530 is a transistor, and 523 is a FET. These constitute a gate circuit (1q), and the input signal (a) shown in FIG.
A reset circuit is configured to reset the charge charged to 501. Here, (f) shown in FIG.
Signals are human-powered. As shown in FIG. 4, the λE device used in this example has VLiN'L' max and VLiNTm
It has two limiter techniques called iq.

The operational amplifier 26. realizes this function. s.

Ryuii! i-path 527, 528, limiter 529. This is the configuration of each zero child of the buffer 532. As shown in the table 5-2-1, when the original is 1 fine, the drum surface potential output 2 is 10 2, and when the original is lighter than 1, the drum surface potential output 2 is 11'. Roughly corresponding to this, the detector output v2 is 16V for dark and 12V for light. Next, the gain of differential amplifier 526 is A==2.

If the density of the original is darker than the predetermined density, e.g.
When t V2 = 16 V, 526 (7) output +s 4 V and the constant current circuit increases. (Since 1Nr = 16), the document will be scattered and the document will become lighter.) The document illumination lamp is turned on so that an appropriate amount of exposure can be obtained.

On the other hand, if the original is pale, for example, the drum surface potential output V
, is 11■ or more and is 12■ shown in the table of FIG.
9, it is limited to 8V.

The V4 output is 8 to r. Follow-) Te Vl, IN'l
' = 10V There is. Furthermore, the drum surface potential is I
The range from OV to 11■ is represented by a graph having the slope of the following equation. , this situation is shown in Figure 4.

VLiNT = 16- (R504x R505)
/ir, -4) ',... By providing a limiter at the upper and lower limits of the above expression (1), it is possible to make the copied image darker or lighter than necessary and to prevent heat. becomes possible.

By the way, as will be described later, in this embodiment, the photosensitive drum 33
The rotation in of is changing. This is because the rotation speed of the main motor 50 is divided into two types: high speed rotation and low speed rotation. When making a 1-size copy, select high speed rotation, and also reduce or enlarge the image. If so, select low speed rotation. In order to change the time constant of the integrator at this time, the circuit shown in the dotted line shown in FIG. 5 is provided, and is connected in parallel with R501 through a resistor.

Also, as the process speed changes, the original value shown in Figure 8)
In order to always read the diagonal line on the 4th side, AE31+1
For a fixed period of time, t2 must be made variable. Details will be described later.

As shown in FIG. 8, the light and shade of a specific portion of the document is read, and the amount of light from the document illumination lamp during image formation is controlled.

Also, as mentioned above, there are limits at the upper and lower limits, but in order to accommodate as many types of originals as possible, there are adjustment points.
? : Provided for three locations.

In FIG. 5, the first method is a level shift for 526. This is done by VR101. Next, the second method is the slope of density control. This is done by R505 (which is considered as a variable resistor as VR102). This is a curve that corresponds to equation (1).

The third method is VR 103 in limiter 529. Graphically, this corresponds to 0 point in FIG. 4. Here, the adjustment method will be explained using FIG. 4. Points 1 and 2 are determined by the above-mentioned first method. Then the second
Determine the slope of ■ using the method. Next, use the third method to determine 0 points and complete the game.

In addition, 109 shown in FIG. 5 is a high voltage transformer, and 31
is a high voltage charger. This is because, before measuring the density of the original, the drum surface potential is measured by a sensor 49 and controlled via a high voltage transformer 109, which is what is called potential control. This is done by rotating the drum for a predetermined period of time during wait or standby after turning on the main power switch of the device and before turning on the copy key. , the installation Fi is set to the standard condition. In this case, the home position 22A (Fig. 1) f
A standard white plate is provided near the lamp 21, and when the lamp 21 is turned on at level 5 of the slide lever 907, the bright latent image created by the light reflected from the white plate at that time is detected by the potential sensor 49, and the light amount of the lamp 21 is detected. Controlled light? jj position window 4i'
It is possible to make Il and M bundles in f. run. 21): By measuring in the state of J' and controlling the electric device 31, it is possible to stabilize the dark part 'jt7 position.

In addition, in Fig. 6, the lamp light JiIX during AE measurement is )1.
This corresponds to the specific light h at position 5' on the intensity selection lever 907, but it is also possible to use a light amount around S+1.

Next, FIGS. 6, 7, and 8 show timing charts and flowcharts for each unit in this example. Explanation, clear j [μ order, the operator is AD
Regarding the case of using F'i and uploading two originals, A.
The movement of the DF is followed by the copy sequence of the main body.

As described above, after the operator sets the original on the original tray 1 in the AF section of the AI) F, the ADF enters the operating state by pressing the ADF start switch. Then, the original is separated one by one from the upper side, and when the original reaches a predetermined position by the lower part (1) (in Fig. 1, 0 points), C0PYSTART (:i
Send out salmon. This is step 7 in the 71st sea.
01', C corresponds to this C0PY in the copier main body.
After receiving the 5TAR 'I' signal, copying starts.
The T signal remains reset until it is reversed at the end of the copy operation.

Next, the optical system starts to advance to 111 in order to stabilize the AE, but at this time, in preparation for the AE measurement, the peak hold circuit of the AE measurement circuit shown in Fig. 5 is reset, as shown in Fig. 6.
f) Generate AE reset signal 7. Also, this ΔE
The reset signal is generated before the copy operation starts, and if the toner or transfer paper runs out during copying and the continuous copy operation is interrupted, this signal is generated. Since the reset circuit is not activated, restarting copying in such a case requires AE 7+I:l.
The sequence is such that no settings are executed. Now,
The optical system that has started the forward movement continues to move forward until it senses the home position [3-g], as shown in step 702. Then, when the home position B is sensed, the optical system changes from forward to reverse, and the document illumination lamp 21
It is lit with a brightness of about 1+7.

This situation is shown in (h) of the time chart Figure 6.

This is shown in (1). Note that this standard brightness is not used in the AE measurement 5 and is always constant.

The home position B of this 4th position is 22B in FIG.

When 10 hours have elapsed since the optical system started the last 12 operations, the AE as shown in Figure 6 (e) is used to start the AE determination.
Generates an E constant signal. This corresponds to step 703 in FIG. Then, in step 704, further T2
;; After each direction has elapsed, the generation of the AP measurement signal is stopped. This is to measure the shaded area shown in FIG.

In addition, in Fig. 8, +α means that the distance between the exposure point A shown in Fig. 1 and the surface 'rEi position 7'+:'J fixed point B is also corrected. By the way, AB lil
The constant signal is output at 1:00 after the optical system starts moving backwards. jlT,
and T2, but when all the drive sources are obtained from the main motor 50 as in this embodiment, when the rotational speed of the main motor changes, it is natural that the reverse movement of the optical system is The speed also changes. This is true! 1
This will also affect the width of the foot signal. For example, if there are two motor rotation speeds: high speed rotation and low speed rotation,
If you want to always read the original density in the shaded area shown in the 8th page, use AI・]Measurement I when the motor is rotating at high speed.
IB '2 is short, and conversely, t2 needs to be set long at low speed rotation. This is the person E shown in Figure 5.
The AE measurement terminal of the measurement circuit is input, but the judgment of high speed or low speed is made by software, and the actual (
On the bottom side, it rotates at high speed when copying at the same size, and at low speed when enlarging.

In step 705, it is determined whether the optical system during the backward movement has reached the home position A, and if the optical system has reached the home position A, the image density obtained by the symptom measurement is changed to 1+i; The VLiNT signal determines the brightness of the document illumination lamp, turns it on, and advances the optical system for exposing the document and forming the I'4' latent image. Also, at this time, sheathing is also done. Step 706 and subsequent steps are the same as the normal copying sequence, except that the cassette size shown in FIG. 1 is reversed depending on whether it is the large size or the small size (1'rii! changes.

In other words, in the case of a large size J, use a 23 reversal sensor, and
The thread changes from forward to reverse, and in the small size, it is reversed with a 22F3 reversal sender.

The 2213 reversal sensor is also the boat position as described above. In step 707, it is determined whether or not the number of Kohi sheets for i''91 is finished, and if it is not the specified number, AI) F 5TAR'l' (A, I after sending No. 74) Subtract 1 from ``I'' to show the original value of 1j.

In response to this, ADJ” (in ζ, the original f1 completed Ki A
' (or paper discharge M1ij f). Honji 1
1Tlj j'; 1], the number of paper sheets is 1 for 2 manuscripts, so step 7 is
077'U ite is ir, l:chii''cAI)FS
'rΔRT' is generated. If the number of copies is more than one, the next copy will be (lit: the halogen lamp will turn on, but the timing of when the halogen lamp will turn on is the same as -X'J rises, which is rare for halogen lamps. 1: r between b' and 〒 4th small is shifted by 1. However, after turning the halogen point -! Of course times will vary.

Therefore, this problem can be solved by selecting the timer values T8 and T4 by setting the paper strength in step 706.

In step 708, it is determined whether the predetermined number of copies has been completed, and if the copy operation has not been completed, jump to [F] to repeat the copy operation. Once the number of
Head to home position I3. When the home position B is reached, the optical system 01 stops and looks at the C0PY 5TART signal from the ADF. (Step 709)
If the C0PY 5TART signal comes within 1.5 hours, it means that the ADF has completed feeding and discharging the original, so the process jumps to 2) to start moving the optical system backwards for AE 1lljl determination. On the other hand, in step 710, even if the predetermined time T6 elapses, C0PY
If there is no 5TART signal, the optical system starts moving backward in order to pull the optical system at home position B back to home position A. When the camera returns to the Baum position A, the optical system stops moving backward to complete the copy sequence.

Incidentally, when the temporary measurement time t2 (Figs. 6 and 8) for variable-magnification copying is made longer, the integral time constant of the AE circuit shown in Fig. 5-1 is increased to make it equal to the integral amount for temporary copying at the same size. Also, if you shorten it, make it smaller. This allows accurate execution of AE control pressure related to equal magnification and variable magnification.

This point can also be applied to other double H modes in which the scanning speed and drum speed change. Moreover, the control effect by AE is possible even when the developing bias voltage is used, and it is also possible even when the object to be measured is partially original light. In addition, some of the AE and other demonstration examples of this application are based on the original ff of the original A11° subject, etc.
i? It is also effective in devices that read data with a CCD, convert it into an electrical signal, process it, and then print or transmit it.

In addition, when determining by pulses generated synchronously with the speed of rotation of the drum or the rotation speed of the drum, it can be determined by a predetermined number of counts (pulses) regardless of the magnification. can. The same applies to t.

Now, regarding the operating method, FIG. 9 shows the operating section. 900 is an operation panel, 901 is a cassette size display fpI, and 902 is a manual feeding display section.

903.905 is the upper and lower selection 4 shaku keys, 904°9
06 is an upper and lower cassette selection display, 907 is a copy density lever, 908 is an AE selection key, 909 is a clear key, and 910 is a numeric keypad. 911 is a word jam display section, 912 is a 7-segment display, 913 is an interrupt display, 916 is an interrupt selection key, 917 is a stop key,
914 is a weight display lamp.

Reference numeral 918 is a power saving selection key and an RJ power selection display section.

In general, if you want to make an emergency copy during continuous copying, this is a function that stops the current copying operation and executes the emergency copy. However, regarding this operation method, if you are only copying the main body without using the ADF, there is no problem, but as mentioned above (
When using AI)F, there may be inconveniences in use in the following cases. For example, when copying multiple originals using the ADF, if a series of copies is not completed, an interrupt copy request is received and 911
6 If the interrupt geeky occurs, the copying sequence of the copying machine enters the stop state J-, /, L-re, V/IJ-interrupt state No. 4-. The manuscript that has been pre-copied is printed on J4J1 paper, and the 1st I,
4, the originals are stacked at iη;9. On the other hand, the manuscript for the requested publication remains on Lay 1.

This situation J8! I'm going to run an urgent fjl i'i'l copy, but it's an interruption! From hem 1) IJ 13.
i: A in the middle of the page, in page order, in the interrupt state
, it is better to let the DF use "E". In this embodiment, the interrupt type J is prohibited.
operation is prohibited.

Reference numeral 918 is a power saving selection key, and reference numeral 919 is a section 7Ji mode display section. The fii'i power mode is a function that lowers the normal constant temperature setting, for example 180 degrees Celsius, and controls the temperature at, for example, 150 degrees Celsius to save power. The reference numeral 44 shown in FIG. 1 is a fixing roller that generally uses a heat fixing method and a two-way fixing method.

As mentioned above, when the node 'Llj100-' is selected, the fixing roller 44
The temperature of
It has fallen to At the same time, all the display sections of the operation section shown in FIG. 9 are turned off except for the power saving selection display section 919. This contributes to power saving. However, the power saving selection key 918 is not always on.

For example, during copying, inputting the power saving selection key is prohibited, and I! , s When a jam occurs, during warm-up after power-on, or during warm-up after power-saving mode selection is canceled, input of the power-saving selection key is prohibited.

Therefore, input of the power saving selection key is permitted only when the copy board is in standby mode.

Furthermore, 918 is an alternate key, which is selected by pressing and released by pressing again.

Next, 908 is an AE selection key. Usually, the AE mode is selected preferentially. For example, when the 11'i power is turned on, the grooves are in A and E modes. Also, 908 is
It is structured so that it can be used as a selection key and can also be displayed at the same time. This AE selection key is also an alternative key, similar to the power saving selection key described above.

In addition, manual operation of the A-E selection key is prohibited when a jam occurs, during copying, and error occurrence 113 (an error is close-up photography (detection of an abnormality in a feather, but detailed explanation will be omitted)). 11- During copying, when the optical system is switched from forward to backward in the last paper copy of continuous copying, the so-called reversal, the state changes to permission. Therefore, when Ar) and +r are in use, the (b) When the last paper is reversed (in this case, one sheet copy) AI)F
is during DF document feeding and paper ejection, AE measurement measurement G1
1j J'p: 3'11iJ is applied to I before the advancement of the Ni optical system begins.

Reference numeral 902 denotes a +-indication display section. In Figure 1131, manual feeding is for paper other than the transfer paper in the upper cassette 51,
For example, when you want to make a single copy of a postcard or a separate sheet of paper, you can copy the postcard onto the manual feed guide 54 by copying it with a 7-Y 1H sheet. In that case, the manual feed lever 53 is lowered to set IQI, ti= so that the eight sheets of paper in the cassette 51 are not fed by the upper paper feed roller. Further, 55 is a manual feed detector, which detects t! when the manual feed lever 53 is pushed downward to select the manual feed mode. #1-4 is to be detected. Here, if the manual feed mode is selected, the manual feed display section 902 lights up in FIG. For example, when the lower cassette is selected, the lower cassette selection indicator 906 is lit, but even in this case, if the manual feed lever 53p is selected, the lower cassette selection display 906 automatically changes to the upper selection display 904. At the same time, the manual feed display section 90
Turn on 2. Of course, after switching to the upper row, manual operation of the upper row and lower row selection keys 903 and 905 is permitted. Also, if you select the 53 manual feed lever, the 9
02 At the same time as displaying the manual feeding display section, the number of copies per copy on the 7 segment display section of 912 is forcibly displayed.
Display on the page. This is because, in principle, only one sheet of coffee is used by hand. Furthermore, when the manual feed mode is selected, input using the numeric keypad 910 for inputting numbers is prohibited.

When the lever 53 is switched to the hand-holding side, whatever number is displayed is switched to 1. When you return the lever, you can enter data using the numeric keypad. AE is possible regardless of manual selection or interrupt copy selection.

After turning on the inner entry key, the ADF' start key is prohibited until the interrupt signal is canceled by turning on the stop key or until the interrupt copy is completed, but if the interrupt key is turned on during copying when the ADF' is not used, the number of sets is The ADF start key is allowed to interrupt copying before the copy is completed, and ADF interrupt copying can be executed. In this case, the normal control that automatically returns to the copy mode before the interrupt when the preset number of interrupts is completed is prohibited until the document runs out of the supply section, and then automatically returns to the previous copy mode. , the remaining copy of the previous mode is displayed, and if the previous mode is AP, it is displayed. By the way, if the interrupt copy key is turned on while the previous copy is being executed in non-AB mode, even if the copy number display is set to 1 (automatically), it will not be set to the A or E mode of the A or B display. Therefore, it is easy to operate. All keys, including the AE key, are not prohibited without a lanyard.

The above-mentioned warm-up time is the wait time [14j] until the fixing heater reaches the cohesive temperature, and the standby state refers to the machine state at least before the start of drum rotation and after the drum rotation has stopped. When the power saving key is turned on, all power is cut off except for the power to the fixing heater's temperature control circuit and the microcomputer, which will be described later.

In FIG. 6, the drum is pre-cleaned by a cleaner and pre-exposed by a lamp 32 to stabilize the drum until scanning of the first document is started.

During this period, the transfer charger 40 is inactive, and each charger is activated from the start of original scanning to the end of scanning of the final original to prevent drum fatigue. is brought to an equalization potential. Also, the drum will stop if left unattended after being cleaned. After another 2 hours, the main power switch was turned off and only the My Fun was powered. The same thing happens even if the power saving switch is left for 2 hours after being turned on. If left unattended during a jam, the AE mode, non-AE copy number, and return to 1st position are prohibited, but if 2 hours have elapsed, the power is turned off as described above and the display etc. disappear. The return to non-AJ, 1 is a control that is performed after a certain period of time (30 seconds) has passed after the main motor has stopped. It should be noted that this return control could also be performed in synchronization with the drum stop f) by the in-motor.

When the copy key 915 shown in FIG. 9 is pressed, the copying machine enters a copy sequence. A certain amount of time is required from when the optical system starts preliminary scanning to when the actual sushi light starts. During this time, if the user wishes to cancel the copy operation, the copy operation can be canceled by pressing the 917 stop key. That is, step 701 shown in FIG.
゜702.703, 704, and 705 can stop the copying operation until paper feeding starts, but once paper feeding starts, the copying paper will enter the inside of the copying machine, so the copying operation will not proceed. Put it away. In this case, copying is performed by AE, but if it can be canceled, the optical system (scanning system) is stopped at the home position "22B" I6 and waits. If left for a predetermined period of time, the home position 22AK is copied as described above. revenge
)do. In synchronization with the return q) of 22A, the A and E displays disappear and the mode becomes non-AE mode. A if you cancel AFi during standby
The H display disappears, but the scanning system remains at the 2213 position, and after turning on the copy key, 22AK? I'm going home. This is done while the drum is rotating for pre-cleaning and pre-exposure.

The operation timing of the copying machine shown in FIG. 1 has been explained above, and the control section that operates these loads will now be explained. FIG. 10 is a block diagram of the control section. 1
02 is a microcomputer. The basic operation of 102 is as shown in FIG. Further, a timing chart regarding the AE measurement is shown in FIG.

In FIG. 10, 101 is a control board. There is the aforementioned microcomputer on the 101 board, 103 buffer as other input protection, and 104° 107 as driver. 105 is a temperature control circuit. This is a circuit for controlling the temperature of the fixing roller 44 as described above, and 57 is a roller heater. 533 is a driver that drives the roller heater.

116 is a power plug. 115 is a power switch, and by turning on the power switch 115, the copying machine enters wait time. This is because copying cannot be performed until the fixing roller 44 reaches a predetermined temperature. At this time, it is generally called the Wade-A-No-Time, and to notify the user of this time, the 914 Waydrive Lamp shown in FIG. 9, 17C is lit. Also, when the 'I-Shohara switch 115 is turned on, rIL power is supplied to the power supply circuit +Ii'i 114 via the /13 Densawa I transformer. Then, 24 Vf)C and 5 Vl)C are supplied to 101 as a load and a control base. 113 is DC
The load 112 is an AC load, and 111 is an AC driver for driving the load. Also, 106 includes Figure 5,
lit:i The bright pump array 1 control unit 108 preframes the measurement result of the drum surface potential and outputs the corona '1 of the high voltage transformer.
1z flow is controlled. This is called a potential control circuit.

Naturally, the light including the AFJ measurement is sent to the light Nt control iv at 106 ij @ light run.

[Brief explanation of drawings]

Fig. 1 shows the cross section of the neck plate to which the present invention can be applied, Fig. 2 shows the gjQ diagram of the control section, Fig. 3.4 shows the gjQ characteristic diagram, and Fig. 5-1 shows the AE control circuit diagram. , Fig. 5-2 is an explanatory diagram of the output, Fig. 6-1 is an operation timing chart, and Fig. 7-1~
Figure 7-5 is a control flowchart, and 8th and J are shades of 1.
hlj constant area diagram, phase 9 diagram is a plan view of the operating section, diagram 10 is 1
lli control block diagram, 33 in the figure is a photosensitive drum,
21 is the original illumination lamp, 49 is 7) 1st sensor, 200
is output by ADF, 106 lamp system, 11 circuits ii■
i person Canon Co., Ltd. (b) Figure 7-3 yot yy Rua Rua Ka2 Gen Hiroshi 〃〃7 procedural amendment power formula) % formula % 1 Indication of the case 1983 Patent application No. A3223 ぢ2 Invention Name image reproduction output device 3 Correcting person 11' Relationship with η Special r1 output j 幀人(1
Address: 3-30-25, Shimomaru 1, 111-ku, Tokyo; Date of amendment order: May 61, 1982 (shipment date); 6. Completed description of the subject matter of amendment; Content

Claims (1)

[Scope of Claims] An image reproduction output device comprising: means for switching a display according to the movement of a movable member necessary for image reproduction; and means for controlling key entry according to opening and closing of the movable member.