JPS61180264A - Image forming device - Google Patents

Abstract

PURPOSE:To erase optional part of an original image by moving spot light which illuminates the original image and specifying an erasure range, and irradiating a photosensitive drum with light corresponding to the specified erasure range. CONSTITUTION:Operations keys 3s-3v are operated to move the spot light from a spot light source 31 to a point S1 and then a point S2 on an original G, and a position specifying key 3w is pressed in this state. When an erasure range specifying key 3c is pressed, a main processor group perform arithmetic to store a high-level signal in a memory for the erasure range part and a low- level signal for other parts. An erasing array 150 equipped with a light emitting element is provided nearby between an electrostatic charger 11 and an exposure part Ph for a photosensitive drum 10 and en electrostatically charged part on the photosensitive drum 10 is discharged where the light emitting element is turned on according to data outputted from the memory; and no electrostatic latent image is formed thereafter even when the part is exposed, thereby erasing the original image partially. The erasure range is stored on a quick disk 30 and can be confirmed.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to an image forming apparatus applied to, for example, an electronic copying machine.

[Technical background of the invention and its problems]

Generally, an electronic copying machine has a function of copying an original image onto paper as is, or enlarging or reducing the original image and making a copy.

By the way, there may be unnecessary parts in the original image. However, conventional copying machines cannot selectively erase and copy original images.

Furthermore, it would be convenient in practice if the erasure range of the original image could be stored and read out when necessary to display and confirm the erasure range.

[Purpose of the invention]

This invention has been made based on the above circumstances, and its purpose is to be able to specify and erase any part of a document image, and to record the specified part and use this recorded data. An object of the present invention is to provide an image forming apparatus that can display and confirm the following information.

[Summary of the invention]

This invention, for example, irradiates a spot light onto an original image, moves this spotlight to specify an erasing range, and irradiates a photoreceptor drum with light corresponding to the designated erasing range to reduce electrostatic potential. The purpose is to erase the image or charge and form an image.A particularly designated erasing range is stored in a quick disk, and the spot light source is driven according to the stored erasing range, and the spot light source is moved onto the document table. This makes it possible to confirm the erased range.

[Embodiments of the invention]

An embodiment of the present invention will be described below with reference to the drawings.

1 to 3 schematically show an image forming apparatus of the present invention, such as a copying machine. Namely, 1 is the main body of the copying machine, and on the top surface of this main body 1 there is a document table (for supporting original documents).
Transparent glass) 2 is fixed. The document table 2 is provided with a fixed scale 2 that serves as a reference for setting the document, and is further provided with a document cover 1 which can be opened and closed near the document table 2. and a work table 12 are provided. Further, an operation panel 3 is provided on the upper surface of the main body 1, and a so-called quick disk device 30 is provided on this operation panel 3. This quick disc device 30 has an eject button 30.
By operating the cover 30. is opened as shown by the dotted line, and in this state, the quick disk Qd as a rotatable magnetic recording medium can be inserted and removed.

Further, this quick disc device 30 is detachable from the main body 1 as shown in FIG. That is, a connecting terminal 303 is provided protruding from the side surface of the quick disc device 30, and this connecting terminal 30. can be inserted into and removed from an insertion opening 13 provided in the main body 1. When the connecting terminal 30 is inserted into the insertion port 13, the connecting terminal 30a is connected to a connecting portion (not shown) provided inside the main body 1.

Furthermore, as shown in FIG. 3, a storage section 14 for a quick disk Qd is provided on the front side of the main body 1. As shown in FIG. 4, this storage section 14 has an interior made of, for example, a metal shield case 1. This shield case 1. A holding member 1 for holding the quick disc Qd in an upright state inside the 1. is provided. Further, a cover 1. is provided on the front side of the main body 1 to cover the storage section 14. is provided so that it can be opened and closed freely.

Further, as described later, display data for instructing the operation of the copying machine, data for controlling the operation of the copying machine, etc. are stored in the quick disk Qd.

On the other hand, as shown in FIG. 5, the original set on the document table 2 is moved back and forth in the direction of arrow a along the lower surface of the document table 2 by an optical system consisting of an exposure lamp 4 and mirrors 5, 6, and 7. As a result, exposure scanning is performed during the reciprocation.

In this case, mirror 6.7 moves at half the speed of mirror 5 so as to keep the optical path length constant.

The light reflected from the original by the scanning of the optical system and the light reflected from the original by the exposure lamp 4 are reflected by the mirrors 5, 6.7, then pass through the variable magnification lens block 8, and then the mirror 9 and guided to the photoreceptor drum 10, so that an image of the document is formed on the surface of the photoreceptor drum 'bxo'.

The photosensitive drum 10 rotates in the direction of arrow C, and its surface is first charged by the charger 1, and then the image of the document is exposed to slit light to form an electrostatic latent image. The image is made into a visual image by being coated with toner by a developing device 12. On the other hand, the paper (image-forming object) P is taken out one by one from the selected upper paper feed cassette 13 or lower paper feed cassette 14 by the feed roller 15 or 16, and the paper guide path 17
Alternatively, the recording medium is guided through the recording medium 18 to a pair of registration rollers 19, and sent to a transfer section by the pair of rollers 19. Here, each of the paper feed cassettes 13 and 14 is
It is detachably provided at the lower right end of the main body 1, and either one can be selected on the operation panel described later. Note that each of the paper feed cassettes 1B and 14 has a cassette size detection switch 60. ．． 60. The cassette size is detected by This detection switch 60. ．． 60! is made up of a plurality of microswitches that are turned on and off in response to the insertion of cassettes of different sizes.

On the other hand, the paper P sent to the transfer section comes into close contact with the surface of the photoreceptor drum 10 at the transfer charger 20, so that
The toner image on the photosensitive drum 10 is transferred by the action of the charger 20. The transferred paper P is peeled off from the photoreceptor drum 10 by the action of the peeling charger 2 and conveyed on the conveyor belt 22, and sent to a pair of fixing rollers 23 as a fixing device provided at the end of the conveyor belt 22. , the transferred image is fixed by passing through this. Then, the paper P after fixing is
The paper is discharged onto a tray 25 outside the main body 1 by a pair of paper discharge rollers 24. Further, after the transfer, the photosensitive drum 10 is neutralized by the neutralizing charger 26.
After that, the residual toner on the surface is removed by a cleaner 27, and the afterimage is erased by a static elimination lamp 28, so that the initial state is returned. Note that 29 is a cooling fan for preventing an increase in moisture level within the main body 1.

FIG. 6 shows the four operating channels 3 provided on the main body IK. 3I is a copy key for commanding the start of copying, and 32 is a display section consisting of, for example, a liquid crystal dot matrix display, on which display information stored in the quick disc Qd is switched and displayed in accordance with each mode. This display section 3. Around the , there are, for example, a numeric keypad for setting the number of copies or a magnification setting key for setting the copy magnification depending on the display mode.
A plurality of setting keys 3a to 3r are provided, which are set to different functions from the cassette selection key for selecting the upper and lower sheet feeding cassettes 13, 14, and the like. Further, the operation panel 3 is provided with operation keys 38 to Jv for driving a spot light source 131tl, which will be described later, and a position designation key 3W for designating the coordinate position of the document.

FIG. 7 shows an example of the configuration of the drive source for each drive section of the copying machine configured as described above, and is composed of the following motors. That is, 31 is a lens motor, which is a motor for moving the position of the lens block 8 for changing the magnification. A mirror motor 32 is a motor for changing the distance (optical path length) between the mirror 5 and the mirror 6.7 for changing the magnification. 33
is a scanning motor, which includes the exposure lamp 4 and the mirror 5;
This is a motor for moving the mirror 6.7 for scanning the original. Reference numeral 34 denotes a shutter motor, which is used to adjust the charging width of the photosensitive drum 10 by the charger 1 during zooming (f: motor for moving the shutter (not shown)). A developing motor 35 is a motor for driving the developing roller of the developing device 12 and the like. 36 is a drum motor, which is a motor for driving the photosensitive drum 10f. 037 is a fixing motor, which is a motor for driving the paper conveyance path 22, the pair of fixing rollers 23, and the pair of paper ejection rollers 24. . 38 is a paper feed motor;
This is a motor for fully driving the delivery rollers 15 and 16. 39 is a paper feed motor, which is connected to the registration roller pair 1;
A motor is used to drive the 9. A fan motor 40 is a motor for driving the cooling fan 29.

FIG. 8 shows a drive 8! for reciprocating the optical system. It shows a bridge. That is, the mirror 5 and the exposure lamp 4 are supported by a first carriage 411, and the mirror 6.7 is supported by a second carriage 412.

412 is a guide rail 42. ．． 42. Guided by arrow a
It can be moved in parallel in any direction. That is, the four-phase pulse motor 33 drives the pulley 43. An endless belt 45 is stretched between the pulley 43 and the idle pulley 44, and one end of the first carriage 4 for supporting the mirror 5 is fixed to the middle part of the belt 45.

On the other hand, the rail 42. of the second carriage 41, which supports the mirror 6.2. Two pulleys 47.47 are rotatably provided on the guide portion 46 at a distance in the axial direction of the rail 422, and a wire 48 is stretched between these pulleys 47.47.

One end of this wire 48 is fixed to a fixed part 49, and the other end is fixed to the fixed part 49 via a coil spring 50. Further, a first carriage 41. One end is fixed. Therefore, as the pulse smoke 33 rotates, the belt 45 rotates and the first carriage 41. moves, and the second carriage 41□ also moves accordingly. At this time, boo')4
7 and 47 serve as movable pulleys, the first carriage 4
The second carriage 412 moves in the same direction at 1/2 the speed. In addition, 1. Second carriage 41
．． ．． The direction of movement of 41□ is controlled by switching the rotation direction of the pulse motor 33.

Further, on the document table 2, a copyable range corresponding to the specified paper is displayed. That is, paper selection key 30. When the paper size f (P x ; Py ) is specified by , and the copy magnification iK is specified by the magnification setting keys 306 and 307 , the copyable range (x, y') is x = P x / K y = It becomes Py/K. Of this copyable range (x, y), the X direction is indicated by a pointer 5 provided on the back surface of the document table 2.

52, and the y direction is the first carriage 4.
It is displayed by a scale 53 provided on the upper surface of the screen.

The above-mentioned pointers 51 and 52 are as shown in FIG.
55 via a spring 56. The pulley 55 is rotated by a motor 58.
The distance between the hands 51 and 52 can be changed by being driven according to the paper size and magnification.

Further, the first carriage 41m is moved to a predetermined position (home position according to the magnification) by driving the motor 33 according to the paper size and magnification. And copy key 30. When is pressed, the first
The carriage 41 is first moved toward the second carriage 412, and then the lamp 4 is turned on and moved away from the second carriage 412.

When the original set meal is completed, the lamp 4 is turned off and the first
The carriage 411 is returned to the home position.

FIG. 1O shows the overall control circuit, which includes a main processor group 71 and first and second sub-processor groups 72 and 73.
It is mainly composed of. The main processor group 71 includes the operation motherboard 3 and various switches and sensors, such as the cassette size detection switch 60. ．． 60. A high-voltage transformer 76 that detects human power from an input device 75 such as and drives the various chargers, the static elimination lamp 28, the blade solenoid 27a of the cleaner 27, the heater 23a of the constant inspection roller pair 23, the exposure lamp 4, and It controls each of the motors 31 to 40, 58, etc. to perform the copying operation described above, and also controls the spot light source 131, laser motor 135, memory 140, erase array 150,
The quick disc device 30 performs an operation to erase unnecessary portions of the document by controlling the array drive unit 160 and the like.
It also controls the memory 142 and display control device 14 to control the display section 32 and the like.

Among the above motors 31 to 40.58, motor 35.37
．． A toner motor 77 that supplies toner to 40 and the developing device 12 is controlled by the main processor group 7 via a motor driver 78, and is controlled by the main processor group 7 through a motor driver 78.
are controlled by the first sub-processor group 72 via a pulse motor driver 79, and the motors 36 , 39 .

38.58 is controlled by the second sub-processor group 23 via the main pulse motor driver 80fr.

Further, the exposure lamp 4 is controlled by the main processor group 7 via the lamp regulator 8, and the heater 23a is controlled by the main processor s+71 via the heater control section 82. Then, the first processor from the main processor group 7.
The drive of each motor to the second sub-pro 7th group 72.73,
A stop command is sent, and the first. Second sub-processor group 72
, 7.9 to the main processor group 7, a status indicating the drive/stop state of each motor is sent. Also, the first
The sub-processor group 72 receives position information from a position sensor 83 that detects the initial positions of the motors 31 to 34. FIG. 11 shows an example of the configuration of the main processor group 7. That is, numeral 91 is a one-chip microcomputer (hereinafter simply referred to as microcomputer), which performs key human power detection and various display controls for operation buttons (not shown) through all input/output ports 92. Furthermore, the microcomputer 91 is expanded with input/output ports 93-96. A high voltage transformer 7 is connected to the input/output port 93.
6, a motor driver 78, a lamp regulator 8, and other outputs are connected, a size switch for detecting the paper size and other human power are connected to the human output port 94, and a copying condition setting switch and other human power are connected to the input/output port 95. Human power etc. will be connected. Also, input/output? −
Port 96 is for options.

FIG. 12 shows an example of the configuration of the first sub-processor group 72. That is, 101 is a microcomputer, which is connected to the main processor group 7. 102 is a programmable interval timer for controlling the phase switching 11J of the pulse motor, and when a set value is set from the microcomputer 101, it counts based on it, and when it has counted out, the end pulse is sent to the microcomputer 101.
output to the interrupt line. A reference clock signal is input to the timer 102. Also, microcontroller 10
1 receives position information from the position sensor 83 and is connected to input/output ports 103 and 104.

And, the input/output port 104 has the above-mentioned No. 4? Le smoke driver l? Motor 31-34.1 via ffi
35 are connected. In addition, the above input/output port 103
Is each A? It is used, for example, when outputting a status signal of the motor to the main processor group 71.

FIG. 13 shows an example of the configuration of the second sub-processor group 73. That is, No. 11 is a microcomputer and is connected to main processor group No. 7. Reference numeral 112 is a programmable interval timer for controlling the phase switching interval time of the pulse motor, and when a set value is set from the microcomputer 11, it counts based on it, and when it counts out, it outputs an end pulse 'k)I-1 I'll do it. This termination signal is latched by the latch circuit 113, and its output is supplied to the interrupt line of the microcomputer 111 and the input/output port input line.

Further, an input/output port 114 is connected to the microcomputer 111, and this input/output port 114 has the A? Motors 36, 3B, 39.5 via the motor driver 80
8 are connected.

FIG. 14 shows the control circuit of the pulse motor driver 121 (corresponding to the input/output ports 104 and 114 in FIGS. 12 and 13).
2 (corresponding to the pulse mode driver 79.l?0 in Fig. 10) is connected, and the smoke driver 122t
/CA? ) Lt smoke 123 (the pulse motor 31
~34°corresponding to 36.38.39) each winding A, A, B
.

B is connected.

Figure 15 shows the speed control method of the motor smoke. Figure (a) shows the speed fm of the pulse motor, and C1 (b
) The figure shows the phase switching interval. As is clear from this figure, the phase switching intervals are long at first, gradually become shorter, then become equal intervals, gradually become longer again, and then stop. In other words, this shows all the through-up and through-down of the pulse motor, starting from the self-starting region, being used in the high-speed region, and finally falling down. In addition, tl*'
2...tx indicates the time of phase switching interval.

Next, the means for erasing the original image will be explained.

16 and 17, the first carriage 411 is provided with a guide shaft 130 along the lamp 4 in a portion where the light of the lamp 4 is blocked, and this guide shaft 130 is provided with a guide shaft 130 in the area where the original is to be erased. Spot light source 1 as a means for instructing
31 is movably provided. This spot light source 1
As shown in FIG. 17, 31 is a light emitting element 132, such as a light emitting diode or a lamp, provided opposite to the document table 2.
The light generated by the light emitting element 132 is directed to the document table 2 by the lens 133, which has a diameter d.
It is now irradiated as a spot light. This spot light has a brightness that allows it to pass through the original G set on the original platen 2, for example, as thick as a postcard. Further, the spot light source 131 is connected to a timing belt (belt with bellows) 134 disposed along the guide shaft 13θ. This timing belt 134 is passed between a pulley 136 provided on the rotating shaft of the Nord Smoke 135 and a driven pulley 132. Therefore, by rotating the main light source 135, the spot light source 1
31 is a first carriage 41. is moved in a direction perpendicular to the scanning direction. Also, the guide shaft 13e's nogurusumo 2-
A position sensor 138 consisting of a microswitch for detecting the initial position of the spot light source 131 is provided on the first carriage 411 located at the side end of the spot light source 135. For example, when the spot light source 131 is moved, first the spot light source 131 is The light source 131 comes into contact with the position sensor 138 to detect the initial position.

Next, a method for specifying the erasing range of the document using the spot light source 131f will be described with reference to FIGS. 18 to 20. The spot light source 131 is moved by operating the operation keys 3S to 3■ while the main processor group 7, which will be described later, is in the document erasure range designation mode. That is, when the operation keys 31 and 3v are pressed, the motor 33 is driven, and the first carriage 41 and spot light source 131 are moved in the scanning direction (arrow y direction shown in FIG. 18).
will be moved to

In addition, when the operation key 3S*"'fr: is pressed, the motor 135
is driven, and the spot light source 131 is moved in a direction perpendicular to the scanning direction (direction of arrow X shown in FIG. 18). The operator operates the operation keys 38 to 3v while visually observing the spot light transmitted through the document G. For example, after moving the spotlight to 81 points on the document G shown in FIG. 19(a), the operator presses the position designation key 3wf. push. Then, the coordinate position specified by S is stored in the main processor group 7 shown in FIG. Similarly, when the position designation key 3wf is pressed with the spotlight moved to 82 points on the document G, the positions of the 82 points are stored in the main processor group 71. The position of this spot light can be detected, for example, by counting the number of driving pulses of the pulse motors 33, 135. After that, when the erase range designation key 3cf set as shown in FIG. 28(f) is pressed, S, S2 as shown in FIG. 19(a) are pressed.
A rectangular area (indicated by diagonal lines) with the points as diagonal points is designated as the erasing range. Also, as shown in FIG. 19(b), all 83 and 84 points of the original G are specified, and when the erase range designation key 3pk set as shown in FIG. 28 (f-1) is pressed, S
a.

The area other than the square with 84 diagonal points is designated as the erasing range. In this way, the erase range specification key,? c.
, 3 When p is pressed, the main processor group 71 performs calculations based on the positions of the two designated points and the copying magnification, and the memory 14θ stores the Heilepel signal "1" in the erased area and the other parts. A low level signal "0" is stored in . That is, in this memory 140, for example, the capacity in each column direction is approximately equal to the moving distance in the X direction of the spot light source 131 divided by the position resolution in the X direction, and the capacity in each row direction is approximately equal to the moving distance in the y direction of the spot light source 13 divided by y It is composed of a force direction position resolution and a large amount of RAM, and the first system uses data supplied from the main processor group 71.
In the case of Figure 9 (,), as shown in Figure 20 (a), and in the case of +qfJ (b), as shown in Figure 20 (b)
As shown in the figure, the Hellepel signal is stored in the address corresponding to the shaded area, and the low level signal is stored in the other addresses.

In this case, the original is set with the copy side facing up, and is turned over along the fixed scale 2I of the original table 2 after the erasure range is specified.

Therefore, the information stored in the memo 140 shown in FIG. 20 is also actually stored inverted in the column direction.

On the other hand, as shown in FIG. 21, an erasing array 150 serving as erasing means is provided close to, for example, between the charger 11 and the non-light area PhO of the photosensitive drum 10. As shown in FIGS. 22 and 23, this erasing array 150 includes a plurality of light shielding cells 1 in a direction perpendicular to the rotational direction of the photoreceptor drum 10.
51 are arranged, and inside each of these cells 151, as shown in FIGS. 24(a) and 24(b), a light emitting element 152 made of, for example, a light emitting diode is provided. Furthermore, lenses 153 are provided in the openings of each cell 151 facing the photoreceptor drum 10 to focus the light from the light emitting elements 152 onto the surface of the photoreceptor drum 100. This erase array 1
For example, the number of light emitting elements arranged in the memory 14 is n.
It is matched with the column direction capacitance of 0. Here, if the distance between the light emitting elements 152 is 'Ip' and the number of elements is N, then the total length of the erasing array 15θ is Q=NXP.

The erase array 150 is driven by the array driver 160 described above. This A-lay ridge moving part 160 is the 25th
As shown in the figure, a shift register 161 having the same number of bits as the number of bits in the column direction of the memory 140, and a store register 1 in which the contents of this shift register 16 are held.
62, constituted by a switch circuit 164 consisting of a plurality of switch elements 163 that are controlled on and off by each output signal of the store register 162, and movable contact pieces 163a/d of these switch elements 163 are grounded; The fixed contacts 163b are connected to each cathode of a light emitting element (light emitting diode) 152 constituting the erasing array 150, respectively. An anode of each of these light emitting elements 152 is connected to a power supply Vcc through a current limiting resistor Ri.

After specifying the erase range of the original as described above, the original cover 1. When the copy key 3θI is pressed, the first carriage 4 and the photosensitive drum 10 are operated, and one column of data is sequentially read from the memory 140 in the row direction (as shown in FIG. 20). Ru. This read data D1 is transferred to the shift register 161 of the array driving section 160 in response to the clock signal CLK. After one column of data has been transferred to the shift register 16, when the charged portion of the photoreceptor drum 1θ reaches the erase array 150, the main processor group 71 outputs a latch signal L.
TH outputs nl according to this signal shift register 16
The contents of 1 are provided to store register 162. Department,
Since the erase array 150 is disposed between the charger 1 and the exposure section ph, one column of data outputted from the memory 140 is stored between the erase array 150 and the exposure section ph, for example.
Assuming that the angle h is θ, and the photosensitive drum 10 is rotating at an angular velocity ω, the output timing of the latch signal LTI is controlled so that it is supplied to the store register 162 before θ, /ω. has been done.

Each switch element 163 of the switch circuit 164 is controlled by each output signal of this store register 162. That is, when the output signal of the store register 162 is at a high level, it is turned on, and when it is at a low level, it is turned off. As a result, the light emitting elements 152 connected to each switch element 163 are turned on when the switch element 163 is on, and are turned off when the switch element 163 is off. Therefore, among the charged portions of the photoreceptor drum 10, the portion where the light emitting element 152 is turned on is charged, and even if the portion from which the charge was removed is subsequently exposed to light, an electrostatic latent image is not formed, and the document image cannot be erased. It has been done. Thereafter, data in the memory 140 is read out column by column in the same manner, and images are erased.Next, the display unit 3 using the quick disk device 30
The second operation will be explained.

When the power of the main body 1 is turned on, the write flag is turned off in the main processor group 7 in step S1 shown in FIG. 26, and the step S! Control is transferred to the quick disk subroutine indicated by . In this quick disk full routine, in step sQ+ shown in FIG.
It is determined whether or not d is set. As a result,
If the quick disk Qd is not set, a message "Please set, for example, 1 quick disk stored in the main processor group 7 in advance in step 8Ql+" is displayed on the display section 32 via the display control section 14.
supplied and displayed. After this, it is determined in step sQs whether a set time, for example 30 seconds, has elapsed or not. If the set time has not elapsed yet, control is transferred to step sQt, and if the set time has elapsed, in step SQ4, for example Abnormal termination code indicating no quick disk (
A return code) is set, and control proceeds to step S3 shown in FIG.

On the other hand, if it is determined in step SQ that the quick disc Qd is set, step sQa
A reset signal is sent to the quick disk device 30, and in response to this reset signal, a motor control flip-flop circuit (not shown) in the quick disk device 30 is reset so that a motor (not shown) does not start. When the initial settings of the quick disk device 30 are completed in this way, the high level @ HH is sent from the quick disk device 30.
A ready signal is output. In step 8Qa, this ready signal is detected, and if the ready signal is not at a high level, it is determined in step 8Q7 whether a set time, for example 2 seconds, has elapsed. As a result, if the set time has not yet elapsed, control is transferred to the step SQa, and if the set time has elapsed, a message stored in advance in the main processor group 7, for example, "Quick disk device is abnormal" is sent in step 8Qa. is supplied to the display unit 32 via the display control unit 141 and displayed. Thereafter, in step sQo, a return code indicating that the quick disk device 30 is abnormal is set, and control is shifted to step S3 shown in FIG. 26.

Further, if it is determined in step sQa that the ready signal is at a high level, step sQ
t. It is determined whether the write flag is on or not. In this case, since the write flag is off as described above, the write gate signal is set to low level in step 5Qst.
"L" and the booter can be read from the quick disc Qd. Thereafter, in step SQl!, the flip-flop circuit of the quick disc device 30 is set and the motor is started.

Further, in step 5Qta, it is determined whether the write flag is on or not, and in this case, the data on the quick disk Qd is read out in step S'L+. This read data is stored in the memory 142. When this read operation is completed, the quick disk device 30 sends a ready signal of a high level, and step SQ+s
Then, it is determined whether or not the ready signal has become a ready signal. As a result, if it is determined that the reading has been completed, it is determined in step 8Q+a whether or not the write flag is on, and in this case, since it is off, step SQ□+8Q
At 1g, the same data on the quick disk Qd is read out again in the same manner. In other words, by reading the same data twice, the reliability of the read data is increased. Thereafter, when it is determined in step 8Q+8 that the reading has been completed, step sQ+ is performed. The motor of the quick disc device 3θ is stopped at step 5Q20, a return code indicating normal termination is set at step 5Q20, and the control proceeds to step 8 shown in the 26th cause. It has been moved to.

In step S3, the return code is determined, and it is determined whether the quick disc subroutine has ended normally. If the result is an abnormal termination, control is transferred to step S4, and it is determined from the return code whether recovery is possible. As a result, if recovery is possible, such as when there is no quick disk, control is transferred to step S, and if recovery is not possible, the process is terminated.

Further, if the quick disk subroutine has ended normally in step S3, step S! Of the display data stored in the memory 142 at I, operation item data is read out, and this operation item data is supplied to the display section 32 via the display control section 141. Therefore, as shown in FIG. 28(a), this display section 32 has various operation keys □
Operation item data is displayed corresponding to 3a to 3d, 3r, and 3q, respectively. In this state, when a desired setting key is pressed, the operation mode is switched to correspond to each item, and the corresponding display is performed. For example, when the setting key 3af is pressed, control is transferred from step S6 to step S, and the number of sheets setting mode is entered. In this step S, memory 1
Out of the display data stored in 42, the number display data is read out, and this data is supplied to the display section 32 via the display control section 141. Therefore, the 28th
As shown in FIG. In step S8, the number of sheets corresponding to the pressed setting key is set, and the display section 32
The number is displayed.

After this, control is transferred to step 89 where the copy key 31
It is determined whether or not is pressed. As a result, copy key 3
．． If has not been pressed, control is transferred to step 8I+. If the copy key 31 is pressed, the normal operation described above is performed in step 810.

On the other hand, when the setting key 3b is pressed in the display state shown in FIG.
The mode is changed to copy magnification setting mode. This step is 8m! Then, among the display data stored in the memory 142, copy magnification display data is read out, and this data is supplied to the display section 32 via the display control section 141. Therefore, the display section 32 displays, for example, as shown in FIG. 28 (C1).
Setting keys 33-3d, ? Magnifications are displayed corresponding to p to 3r, and setting keys 3a to 3d and 3p to 3r are each provided with a magnification setting function.

In this state, when any of the setting keys 3a to 3d and 3p to 3r is pressed, the magnification for the pressed setting key is set in step 813, and the magnification is displayed on the display 3. will be displayed.

Thereafter, control is transferred to step S11, and when the copy key 31 is pressed, a copying operation is performed at the magnification set in step S1o.

Further, in the display state shown in FIG. 28(a), when the setting key 3C is pressed, the control changes from steps 814 to 81.
The n1 copy density setting mode is entered. In this step 5Ill, copy density display data is read out of the display data stored in the memory 142, and this copy density display data is supplied to the display section 32 via the display control section 141. Therefore, display section 3. For example, Fig. 28fd
), a degree setting display is performed corresponding to the setting keys 9h, , 9j. In this state, each time the setting key 3h is pressed, the copy density is set to become brighter by one step, and each time the setting key 3j is pressed, the copy density is set to become darker by one step. When the setting keys 3h and 3j are pressed in this way, the control goes from step S16 to the steps S,
Copy key 3. When is pressed, a copying operation is performed using the set density.

Furthermore, when the setting key 3d is pressed in the state shown in FIG.
ll, and the paper size setting mode is entered. In this step S18, paper size display data corresponding to the set paper size is read out of the display data stored in the memory 142 according to the output signal of the sensor switch 6θI+602, and this data is read out from the display control unit 141.
The signal is supplied to the display unit 32 via. Therefore, as shown in FIG. 28(e), the display unit 32 displays the setting key 3.
Paper sizes are displayed corresponding to b and 3c. In this state, if either setting key 3b or 3c is pressed,
The selected paper size is displayed on the display section 32, and control continues from step SI9 to step S.

will be moved to And copy key 3. When is pressed, a copying operation is performed using the paper selected in step SIo.

Next, in FIG. 28(a), when the setting key 3r is pressed, control is transferred from step 820 to step 821, and the original erasure mode is entered. This step S2. Then, the erase range specification display data is read from the memory 142,
As shown in FIG. 28(f), the erasing range of the original is designated and displayed. The setting keys 3c and 3p are each given the function of an erasure range designation key as described above.

In this state, as described above, the operation keys 3S to 3v
When the spot light source 131f is moved by the k operation and a predetermined coordinate position is input by the position designation key 3W, the control is transferred from step 8I' to step 823. Then, in step S23, press the setting key, ? c, ,?
If it is determined that the erasing range has been designated based on pK, it is determined in step S24 whether or not the entire set time has elapsed. As a result, if the set time has not yet elapsed, control is transferred to step 822, and if the set time has elapsed, step S! At 11, it is determined whether or not the setting key 3r has been pressed.

That is, the setting key 3r is used to specify whether or not the specified coordinate position data and erasure range specification data are to be stored in the quick disk Qd), and if the setting key 3r is not pressed, it is determined that the data will not be stored. and the control goes to step 82
6, and it is determined whether or not the copy key 3I has been pressed. As a result, if the copy key 3I is not pressed, the control is transferred to step S5, and if the copy key 31 is pressed, the control is transferred to step say. An erasure copying operation is performed on the original document. Then, when the erasure copying operation is completed, the control returns to step S! 1.

Further, in step 52ff, if the setting key 3r is pressed and it is determined that the setting key 3r is to be stored, control is transferred to step 82B, and the coordinate position data stored in the main processor group 7 and the inside of the specified range are Alternatively, erase range data specifying the outside is written to a predetermined address in the memory 142. Thereafter, the write flag is turned on in step 82Q, and control is transferred to the quick disk subroutine of step SSO.

In the quick disc subroutine shown in FIG. 27, step sQ1+8Qi + SQ
Control is transferred to a*8Qto.nl In this step 5Qsa, it is determined whether or not the inscription flag is on. In this case, it is turned on, so step 5Q2
In step 1, it is determined whether or not the attached quick disk is write-protected. If the result is that writing is prohibited, in step 5Qy2, for example, "replace the quick disk" stored in the main processor group 7 is performed. "Please do so" is supplied to the display section 32 via the display control section 141 and displayed. and,
In step 8Q23, the system waits for 30 seconds, for example, and if the quick disk is replaced within this time, the control is transferred to step 5Q21, and if not replaced, step 5Q
An abnormal termination return code is set in step 88.24, and the control returns to step 88. will be moved to

On the other hand, the step SQl! If it is determined in step 1 that the attached quick disk is not write-protected, the write gate signal is set to ``H'' in step 8Q2s, and data can be written to the quick disk Qd. Ru. After this, the motor of the quick disk device 30 is started in step SQ+2, and it is recognized that the write flag is on in step 5Q13.
In step 5Q26, the data stored in the memory 142 is written to the quick disk Qd. Then, when it is confirmed that the writing of all data has been completed and the ready signal has been set to the ready signal, the control is transferred from step SQ+5 to SFOOTSU 7"5Qt6, and it is determined whether the write flag is on or not. In this case, the control that is turned on is transferred to step 8Q19, and the motor of the quick disc device 30 is stopped.After this, step 8
In Q20, a return code indicating normal completion is set, and control is transferred to step S31.

In this step S3□, the return code is determined, and if n1 has been successfully completed, control is transferred to step 826,
If the process has ended abnormally, it is determined in step SSt whether recovery is possible based on the return code. As a result, if recovery is possible, control is transferred to step 826, and if recovery is not possible, the process is terminated.

Next, in the state shown in FIG. 28(a), when the setting key 3qk for specifying the erasure range display of the document is pressed, control is transferred from step S33 to step 834, and the erasure range display mode is entered. In step 834, it is determined whether coordinate position data and erasure range designation data are stored at a predetermined address in the memory 142, and if these data are not stored, control is transferred to step 5s11. In this step 8311, display data, for example, "No erased data is stored" stored in the main processor group 7 is read out, and this display data is supplied to the display section 32 via the display control section 14. Is displayed. Thereafter, if the quick disk Qd is replaced, the control is transferred to step S1, and if it is not replaced, the control is transferred to step S1+.

Further, if it is determined in step 834 that the required data is stored in the memory 142, the required data is read out from the memory 142 in step SSS,
It is supplied to the main processor group 7. The main processor group 71 uses the supplied coordinate position data and erasure range designation data to store data in the memory 140 as shown in FIG. 20(a).
.

(Similar display data is stored in bl. After that, in step 83?, display data is sequentially read out from the memory 140 and supplied to the display unit 32 via the display control unit 141. The erasing range is displayed on the display section 32 as shown in FIG. 28 (gl or h).

Simultaneously with this display, the main processor group 71 also displays the coordinates of the first carriage 4 according to the supplied coordinate position data.
, the spot light source 131 is driven.

For example, if the specified erasure range is S+ as shown in FIG.
(Xr*Y+) *S2 If (X2°y2), first the coordinate position 51 (where the spot light source 131 is stored) is
XI, yI), and in a state where the spot light source 131 is moved to this coordinate position S1, the light emitting element 13
2 is supplied with a lighting signal from the main processor group 71,
This lamp will light up. In this state, the first carriage 4
1. The spot light source 13 is driven, and the spot light is moved according to the arrow shown in FIG. That is, first, only the spot light source 131 is driven to move the spot light from the coordinate position "'1CX+ ;)'+ ) to (xxyl)", and then only the first carriage 41m is driven to move the spot light to the coordinate position (X2 e)'1) to the coordinate position S2 (Xt*yt).Furthermore, only the spot light source 13 is driven again to move the spot light to the coordinate position (XI, y2), and finally the first carriage 4 is driven, and the spot light is moved from the coordinate position (XIe)'2) to the coordinate position S.

It is moved to (xICYl). In this way, the erasing range is displayed, and when the spot light source 131 reaches the coordinate position S, the light emitting element 132 is turned off.

In addition, if multiple erasure ranges are specified, when the display of a certain erasure range is completed, the spot light source 131 is moved to another specified coordinate position, and the erasure range is displayed by the same operation as above. .

When the above display is waited for a predetermined period of time, the control starts at step S.
, to be transferred to.

Moreover, in the state shown in FIG. 28(a), the setting key 3
a to 3d, 3q, and 3r are not pressed, and the copy key 3. When is pressed, the control is transferred from step 8° to SIo, and a same-size copying operation is performed on only one sheet of A4 paper, for example. Then, when the copying is completed, the control goes to step S.
will be moved to

According to the above embodiment, display data such as operation items stored in the quick disk Qd is displayed on the display section 32, and by operating the corresponding setting key, the copied cherry blossom main body 1
The operating mode of the controller can be changed. therefore,
You can give different functions to the same setting key,
Moreover, the display section 3. Since different displays can be displayed depending on the operation mode, the number of setting keys and the number of parts of the display section 32 can be reduced, and the overall configuration of the operation panel 3 can be simplified.

Further, since operation guidance is displayed on the display section 3□ according to each operation mode, operation is easy.

Furthermore, since the quick disk device 30 is incorporated into the operation knob 3, it is possible to suppress the increase in size of the main body 1.

By incorporating the quick disk device 3θ into the operation channel 3, the quick disk device 30 can be kept away from magnetism generating equipment such as a developer, and the stored contents of the quick disk Qd can be protected.

Furthermore, by changing the displayed content stored in the quick disk Qd, it is possible to display the same content in Japanese or English, and to explain the same operation content simply or in detail. , it is possible to easily change the displayed content in response to customer requests.

Since the quick disc device 30 is removable from the main body 1, the quick disc device 30f
It can be shared with other information devices.

In addition, since a quick disk storage section 14 with a shield structure is provided on the front part of the main body 1, the quick disk can be protected from the influence of magnetism and stored safely, and the quick disk can be stored safely in the quick disk device 30. can also be replaced quickly.

Furthermore, since the display section 32 is a dot matrix display, it is possible to perform various displays.

Furthermore, unnecessary portions of a document can be specified and erased, which is convenient for editing copied images and the like.

Furthermore, since specified erasure data can be stored on the quick disk, the data stored on the quick disk can be reused when erasing the same portion of a document.

Furthermore, since the erased data stored in the quick disk can be displayed on the display section 32, the display section 3! You can check the erasing range of the original.

Further, the spot light source 131 is operated according to the erasing data stored on the quick disk, and the erasing range can be displayed on the document table 2, so that the erasing range can be reliably recognized.

Although the configuration is such that it can be inserted into the inlet 13, a connector 30. Code with f30. It is also possible to provide a connector 3θ4 and connect the connector 3θ4 to the main body 1. With such a configuration, compatibility between the quick disk device 3θ and other information devices can be improved.

In addition, when confirming the erasing range, the spot light source 13
As shown in FIG. 31, the display unit 32 displays a dot DI corresponding to the spot light source 131 and a frame Plf corresponding to the document, and the dot DI corresponding to the document is displayed as shown in FIG.
It is also possible to operate as shown by the dotted line in accordance with the erasing range.

Further, the arrangement position of the erasing array 150 is not limited to between the charger 11 and the exposure section Ph shown in FIG. It is also possible to configure the electrostatic latent image to be erased according to a designation.

It goes without saying that various other modifications can be made without departing from the gist of the invention.

〔Effect of the invention〕

As described in detail above, according to the present invention, not only can any part of a document image be specified and erased, but also the specified part can be recorded and this recorded data can be displayed and confirmed. We can provide all possible image forming devices.

[Brief explanation of the drawing]

1 to 3 are respectively schematic perspective views showing one embodiment of an image forming apparatus according to the present invention, FIG. 4 is a side sectional view showing a main part of FIG. 3, and FIG. 5 is an image forming apparatus. FIG. 6 is a side sectional view showing the configuration of the device, FIG. 6 is a plan view showing the configuration of the operation panel, FIG. 7 is a perspective view showing the configuration of the drive section, and FIG. 8 is a schematic diagram of the drive mechanism of the optical system. 9 is a perspective view schematically showing the configuration; FIG. 10 is a configuration diagram showing the overall control circuit; FIG. 11 is a configuration diagram of the main processor group; FIG. 12 13 is a configuration diagram of the first sub-processor group, FIG. 13 is a configuration diagram of the second sub-processor group, FIG. 14 is a schematic configuration diagram showing the pulse motor control circuit, and FIG. 15 explains the pulse smoke speed control method. FIG. 16 is a perspective view of the main part showing the spot light source, FIG.
The figure is a side sectional view of the main part showing the spot light source, Figures 18 to 19 are plan views shown to explain the operation of specifying the erasing range of the original using the spot light source, and Figure 20 shows the contents of the memory. FIG. 21 is a side sectional view of the main part showing the arrangement of the erasing array, and FIGS. 22 and 23 are diagrams showing the relationship between the erasing array and the photosensitive drum, respectively, and the 22nd factor is shown for explanation. 23 is a front view showing only the main parts, and FIG. 24 shows the configuration of the erasing array. 25 is a circuit configuration diagram showing the configuration of the array driving section, and FIGS. 26 and 27 are flowcharts used to explain the operation of this image forming apparatus, respectively. Fig. 28 is a plan view showing only the main part, which is shown to explain the operation of the display section, Fig. 29 is a plan view shown to explain the display operation of the erase range, and Fig. 30 is a plan view showing the main part. An outline perspective view showing another embodiment of the disk device,
FIG. 31 is a plan view of the main part shown for explaining another embodiment of the erasing range display operation, and FIG. 32 is a side sectional view of the main part showing another example of the arrangement of the erasing array. No. Copying machine body, 1. ...Storage section, 1. ...Shield case, 2...Document stand, 3...Operation/mother panel, 3,...Display section, 38-3r...Setting key, 33
~3v...operation key, 3W...position specification key, 10
...Photosensitive drum, 30...Quick disk device, Qd...Quick disk, 41m first carriage, 71...Main processor group, 131...Spot light source, 132φ...Lens , 135
...Pulsmoke, No.50...Erasing array, 15
2... Light emitting element, 153... Lens, 160...
Array drive section, 14θ, 142...memory, P...
Paper, Ph...Exposure section. Applicant's agent Patent attorney Takehiko Suzue Figure 17 d Figure 18 j W J Figure 19 (
b) Figure 20 (a) (b) Figure 21 Figure 22 Figure 26 f/) 2 Figure 26 1-3

Claims (1)

[Scope of Claims] 1) A document placed on the document table is optically scanned by a scanning means that moves along the document table, and a reflected light image from the document is transferred to an image carrier to which a charge is applied. In an image forming apparatus that forms an image by forming an image on a transfer material to form a charge pattern, developing this charge pattern, and transferring and fixing it to a transfer material,
a designation device provided in the scanning device for designating an arbitrary range of the document using transmitted light; an erasing device for erasing an image within or outside the designated range from the image carrier during image formation; and a device main body. read/write means for a rotatable magnetic recording medium on which data corresponding to an arbitrary range of a document specified by the specifying means is recorded; An image forming apparatus comprising: a control means that operates to display the specified range. 2) Image formation according to claim 1, wherein the instruction means is movable in a direction perpendicular to the moving direction of the scanning means and comprises a light emitting element and a lens that irradiates a spot light onto the document surface. Device. 3) The image forming apparatus according to claim 1, wherein the erasing means comprises a plurality of light emitting elements arranged near the image carrier along the longitudinal direction of the image carrier. 4) The image forming apparatus according to claim 1, wherein the rotatable magnetic recording medium is a quick disk.