JPS638765A - Image forming device - Google Patents

Abstract

PURPOSE:To designate an erasure range with an operation by selecting the erasure mode of an original image by a selecting means and indicating one point of the original image with a designating means and setting the erasure range in accordance with the selected erasure mode based on a this indicated point to erase the original image. CONSTITUTION:A main processor group is set to the original upper part erasure mode, and in this state, operation keys 30a-30d are properly operated to move a spot light source 131 to one arbitrary point on a boundary line 1a. When a position designating key 30e is operated after the spot light source 131 is moved onto the boundary line 1a, this position is recognized by the main processor group, and the main processor group supposes the boundary line 1a in accordance with this position, and erasure data is set in memory 140 correspondingly to the boundary line 1a. When an original G1 is reversed in the direction of the shorter side and is set to the side of a fixed scale 21 and copy key 301 is operated in this state, the image in the designated part is erased, and an image is formed on a form P1.

Description

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

(Prior Art) As is well known, copying machines have been developed that are capable of specifying and erasing any part of a document image.

In this type of copying iron, the erasing range of the document is assumed to be, for example, a rectangle of arbitrary size, and the erasing range is specified by specifying the diagonal points of this rectangle. Therefore, in order to designate an erasing range, it is necessary to designate two points in the erasing range, making the designation operation complicated.

(Problems to be Solved by the Invention) This invention solves the problems related to the operation of specifying the erasure range, and its purpose is to create an image in which the portrait range can be specified by a simple operation. The present invention aims to provide a forming device.

[Configuration of the Invention (Means for Solving Problems)] The present invention includes, for example, a specifying means for specifying an arbitrary position on a document image, an erasing means for erasing an image within a set range, and a means for solving the set image. An image in which the area has been erased (transfer means for transferring the elephant onto the transfer material, selection means for selecting the erasure mode, and erasure mode selected by the selection means with reference to one point of the document specified by the specification means) The erasing means sets an erasing range of the document according to the erasing range, and erases the image by activating the erasing means 1ti11□□□ according to this erasing range.

(Operation) According to the present invention, when the selection means selects the erasing mode of the original image and the specifying means specifies one point on the original image, the erasing range is set based on this one point according to the selected erasing mode. The erasure of the original image is repeated 11 times.

(Example) Hereinafter, an example of the present invention will be described with reference to the drawings.

FIGS. 11 and 12 schematically show an image forming apparatus of the present invention, for example, a copying hall. A document table (transparent glass) 2 for supporting a document is fixed to the upper surface of the main body 1 for copying. The document table 2 is provided with fixed scales 2+ and 22 that serve as standards for setting the document, and furthermore, the document table 2
A document cover 11 and a work table 12, which can be opened and closed, are provided near the. Then, place i on the document table 2.
The placed original is exposed and scanned by an optical system consisting of an exposure lamp 4 and mirrors 5, 6, and 7 being reciprocated in the direction of arrow a along the lower surface of the original table 2. . In this case, the mirrors 6.7 are arranged so as to maintain the optical path length.
It is moved at 1/2 the speed of the mirror 5. The light reflected from the original by the scanning of the optical system, that is, the light reflected from the original by the light irradiation of the exposure lamp 4, is reflected by the mirror 5, 6, 7, and then passes through the variable magnification lens block 8.
Further, the light is reflected by mirror 9 and guided to photoreceptor drum 10, so that an image of the document is formed on the surface of photoreceptor drum 10.

The photosensitive drum 10 is rotated in the direction of arrow C in the figure, and first, the surface thereof is charged by the charging device 11. Thereafter, both images are exposed to light to form an electrostatic latent image on the surface. This electrostatic latent image is made visible by applying toner by the developing device 12.

On the other hand, the paper (i?1 transfer material) P is taken out one by one from the selected upper paper feed cassette 13 or lower paper feed cassette 14 by the delivery roller 15 or 16, and the taken out paper passes through the paper guide path. It is guided to one pair of registration rollers through a pair of registration rollers 17 or 18, and guided to a transfer section by this pair of registration rollers 19. Here, the paper feed cassettes 13 and 14 are removably provided at the lower right end of the main body 1, and one of them can be selected from an operation panel to be described later. The cassette size of each of the paper feed cassettes 13 and 14 is detected by a cassette size detection switch 601 and 602, respectively. The cassette size detection switches 601 and 602 are composed of a plurality of microswitches that are turned on and off according to the insertion of cassettes of different sizes.

The paper P sent to the transfer section is brought into close contact with the surface of the photoreceptor drum 10 at the transfer charger 20, and
The toner image on the photoreceptor drum 10 is transferred by the action of 0. This transferred ff1P is transferred to the peeling charger 21.
The image is electrostatically peeled off from the photoreceptor drum 10 by the action of , and is sent by the conveyor belt 22 to a fixing roller 23 as a fixing device provided at the terminal end of the conveyor belt 22 . The transferred image is fixed by passing through this, and the fixed paper P is discharged to a tray 25 outside the main body 1 by a pair of paper discharge rollers 24 . After the photosensitive drum 10 has been transferred, the charge is removed by the charger 26, residual toner on the surface is removed by the cleaner 27, and afterimages are roughly erased by the charge removal lamp 28, so that the photoreceptor drum 10 returns to its initial state. He is set to return. Note that 29 is a cooling fan for preventing the temperature inside the main body 1 from rising.

FIG. 13 shows the operation panel 30 provided on the main body 1. 301 is a copy key for commanding the start of copying; 30
2 is a numeric keypad for setting the number of copies, etc.; 303 is a display unit for displaying the operating status of each part and paper jams; and 304
is a cassette selection key for selecting the upper and lower paper feed cassettes 13 and 14, 305 is a cassette display section for displaying the selected cassette, and 306 is a double'$ setting key for setting the copy enlargement/reduction magnification in a predetermined relationship. , 307 is a zoom key for steplessly setting the enlargement/reduction magnification, 308 is a display section for displaying the set magnification, 309 is a density setting section for setting copy density, and 30a, 30b, 30c, and 30d are original documents to be described later. 30e is a position designation key for inputting the coordinate position indicated by the spot light source, 30f is a display section such as a liquid crystal dot matrix display, and 30g is this display section 30f.
30h is a memory key for storing, for example, the moving position of a spot light source or a scale provided in the first carriage 411. .

FIG. 14 shows an example of the drive configuration of each drive section of the copying paper constructed as described above, and is composed of the following motors. That is, 31 is a lens motor;
This is a motor for moving the position of the lens block 8 for zooming. Reference numeral 32 denotes a mirror motor, which connects the mirrors 5 and 6 to change the magnification.
．． 7. This is a motor for changing the distance M (optical path length) between 7 and 7. 33 is a scanning motor, and the exposure lamp 4
and a mirror 5, and a motor for moving the mirror 6.7 for document scanning. 34 is a shutter motor, which is a motor for moving a shutter (not shown) for adjusting the charging width of the photosensitive drum 10 by the charger 11 during zooming. Reference numeral 35 denotes a development motor, which is a motor for driving the developing roller of the development device 12 and the like. 36 is a drum motor, which is a motor for driving the photosensitive drum 10.

Reference numeral 37 denotes 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 discharge rollers 24. 38 is a paper feeding motor, which is a motor for driving the delivery rollers 15 and 16. 3 is a paper feed motor, which is a motor for driving one of the pair of registration rollers. 40 is a motor for a fan, and is a fan motor. This is a motor for driving the engine 29.

FIG. 15 shows a drive mechanism for reciprocating the optical system. l1
It shows the mechanism. 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, respectively, and these carriages 411 and 412 are guided by guide rails 421 and 422 in the direction of arrow a. It is said to be able to move in parallel. Further, the four-phase pulse motor 33 drives a pulley 43. An endless belt 45 is stretched between the pulley 43 and the idle pulley 44.
A first carriage 411 that supports the mirror 5 in the middle of the mirror 5
One end is fixed. On the other hand, the guide portion 46 of the second carriage 412 supporting the mirror 6.7 is
Two pulleys 47.47 are rotatably provided apart from each other in the axial direction of 22, and a wire 48 is stretched between these pulleys 47.47. One end of this wire 48 is fixed to four fixed parts, and the other end is fixed to each of the four fixed parts via a coil spring 50. Further, one end of a first carriage 411 is fixed to a midway portion of the wire 48. Therefore, when the pulse motor 33 is rotated, the belt 45 is rotated and the first carriage 4 is rotated.
11 is moved, and along with this, the second carriage 42
2 is also moved. At this time, since the pulleys 47, 47 serve as vJ pulleys, the second carriage 412 is moved in the same direction as the first carriage 411 at 1/2 the speed. Note that the moving directions of the first and second carriages 411 and 412 are 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, the cassette selection key 304
Let the paper size specified by (Px, Py) be,
If the copy magnification specified by the magnification setting keys 306 and 307 is K, the copyable range (X, V) is rx-P
x/Kj.

ry=Py/KJ. This copyable range (x, y)
In the X direction, a pointer 51 provided on the back side of the document table 2
．． 52, and the y direction is indicated by a scale 53 provided on the upper surface of the first carriage 411.
and the distance between the fixed scales 21.

As shown in FIG. 16, the above-mentioned pointers 51 and 52
．． 55 via a spring 56. The pulley 55 is a motor 58
This motor 58
is driven in accordance with the determined copyable range in the X direction, thereby changing the distance between the hands 51 and 52.

Further, the first carriage 411 is moved to a predetermined position (home position according to the magnification) by driving the motor 33 according to the paper size and magnification. When the copy key 301 is pressed, the first carriage 411 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 scanning of the original is completed, the lamp 4 is turned off and the first carriage 41
1 is returned to the home position.

FIG. 1 shows the overall control circuit.

The main processor group 71 detects inputs from the operation panel 30 and input devices 75 such as various switches and sensors, for example, the cassette size detection switches 601 and 602, and includes a high-voltage transformer 76 that drives the various chargers, and the static elimination lamp. 28, a blade solenoid 27a1 of the cleaner 27; a heater 23a of the fixing roller pair 23;
The exposure lamp 4 and each of the motors 31 to 40.5
8 etc. to perform the above-mentioned copying operation,
Spot light source 131, pulse motor 135, memory 14
0.141, the erase array 150, array drive unit 160, etc. are controlled to erase unnecessary portions of the document. In addition, a spot light source 131, a pulse motor 1
35, erase array 150, array driver 160, and memories 140 and 141 will be described later.

Among the above motors 31 to 40.58, motor 35.37
．． A toner motor 77 that supplies toner to 40 and developing unit 12 is controlled by a main processor group 71 via a motor driver 78, and
35 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 73 via the pulse motor driver 80. Further, the exposure lamp 4 is connected to the main processor group 71 via a lamp regulator 81.
The heater 23a is controlled by the main processor group 71 via the heater control section 82. Then, from the main processor group 71 to the first and second sub-processor groups 72
．． Commands to drive and stop each motor are sent to the first .
A status signal indicating the drive or stop state of each motor is sent from the second sub-processor 172, 73 to the main processor group 71. Further, the first sub-processor group 72 receives position information from a position sensor 83 that detects the initial positions of the motors 31 to 34.

Next, the document image erasing means will be explained.

17 and 18, the first carriage 411 is provided with a guide shaft 130 along the lamp 4 in the part where the light of the lamp 4 is blocked, and this guide shaft 130 has a guide shaft 130 for marking the erasing range of the document. Spotlight IT as a means of giving instructions
! 131 is movably provided. This spot light source 131 is, as shown in FIG.
The light generated by the lens 32 is irradiated onto the document table 2 by a lens 133 as a spot light having a diameter d. This spot light has a brightness that allows it to pass through the document G set on the document table 2, for example, and has a thickness comparable to that of a paper towel. Further, the spot light source 131 is a timing belt (toothed belt) 1 disposed along the guide shaft 130.
It is connected to 34. This timing belt 134 is connected to a pulley 136 provided on the rotating shaft of a pulse motor 135.
A hook is passed between the driven pulley 137 and the driven pulley 137.

Therefore, by rotating the pulse motor 135, the spot light source 131 is moved in a direction perpendicular to the scanning direction of the first carriage 411.

Further, a position sensor 138 consisting of a microswitch for detecting the initial position of the spot light source 131 is provided in the first carriage 411 located at the end of the guide shaft 130 on the pulse motor 135 side.

For example, when the spot light source 131 is moved,
First, the spot light source 131 comes into contact with the position sensor 138 to detect the initial position.

On the other hand, as shown in FIG. 19, an erasing array 150 serving as erasing means is provided close to the photosensitive drum 10, for example, between the charger 11 and the exposure section ph. As shown in FIGS. 20 and 21, this erasing array 150 includes a plurality of light-shielding cells 151 arranged in a direction perpendicular to the rotational direction of the photoreceptor drum 10, and a plurality of light-shielding cells 151 inside each light-shielding cell 151. A light emitting element 152 made of a light emitting diode, for example, as shown in FIG. 22 (a>(b)) is provided.

Furthermore, a lens 153 is provided in the opening of each cell 151 facing the photoreceptor drum 10 to focus the light from the light emitting element 152 onto the surface of the photoreceptor drum 10 . The number of light emitting elements arranged in this erasing array 150 matches, for example, the capacity of the memory 140 in the column direction. That is, as shown in FIG. 23 (a>(b)), this memory 140 is, for example, a RAM whose capacity in each column direction is approximately equal to the movement distance of the spotlight rA131 in the X direction divided by the positional resolution in the y direction.
Under the control of the main processor group 71, a high level signal is stored at the address corresponding to the erased part and a low level signal is stored in the other parts, as shown in FIGS. is now generated.

The erase array 150 is driven by the array driver 160 described above. The array driving section 160 is provided, for example, in correspondence with each of the light emitting elements 152 constituting the erasing array 150, and is constituted by switch elements that are turned on and off by erasing data read out one column at a time from the memory 140. There is. Therefore, memory 1
Among the erase data read out from the erase array 150, only the switch elements corresponding to the high level signal are turned on, and the light emitting elements 152 of the erase array 150 are turned on.
N loads on the photosensitive drum 10 corresponding to the portion where 2 is lit are removed. Therefore, in the post-exposure section ph,
Even when irradiated with light, no electrostatic latent image is formed in this portion, and the original image is erased.

Note that the arrangement position of the erasing array 150 is not limited to between the charging charger 11 and the exposure section ph, as shown in FIG.
As shown in FIG. 24, it may be arranged between the exposure section ph and the developing device 12.

In the above configuration, the original erasing operation will be briefly described.

The display section 30f of the operation panel 30 normally displays a display indicating an erase mode in correspondence with each selection key 30q, as shown in FIG. 2 (a>).
~Pd is each specified as an arbitrary point on the manuscript,
This example shows a case where a boundary line that intersects at that point is assumed, and the erasure range is set based on this boundary line. That is, pa is the erase mode that erases the area below the specified position on the original, Pb is the erase mode that erases the area above the specified position on the original, Pc is the erase mode that erases the left side of the original from the specified position, and Pd is the erase mode that erases the area on the left side of the original from the specified position. This shows an erase mode that erases the right side of the specified position on the document.

Further, Pe and Pf are used when specifying the erasure range based on the scale 53 provided on the first carriage 411, pe is the scale movement mode operated when moving the scale 53, and Pf is the spot A spot light source movement mode that is operated when moving the light source 131 is shown.

Furthermore, PC+ indicates a display switching mode, and when the selection key 30G corresponding to this display switching mode PQ is operated, the display on the display section 30f changes from FIG.
) will be changed.

In the same figure (b), Ph-Pk is a case in which, when an arbitrary point on Harabatake is specified, two boundary lines are assumed to be orthogonal to each other at that point, and the erasure range is set based on these boundary lines. It shows.

That is, ph is an erasing mode that erases the lower left side of the original using a specified point as a reference, Pi is an erasing mode that erases areas other than the lower left side of the original using a specified point as a reference, and P'' is an erasing mode that erases the lower left side of the original using a specified point as a reference. Pk indicates an erase mode in which the lower right side of the document is erased, and Pk indicates an erase mode in which the lower right side of the document is erased with a designated point as a reference. In this display state, if the selection key 30C corresponding to the display switching mode Pct is operated, the display state changes again, for example, to the same figure (
It is possible to switch to the state shown in a).

Next, the operation for specifying the erasure range will be explained.

When specifying the erasure range of the original image, as shown in FIG. 3, set the original m G 1 on the fixed scale 22 side with the copy side facing upward.

Next, an imaginary boundary line 1a of the document G1 shown in FIG.
When erasing the Ga section located above, the display section 30f of the operation panel 30 is set to the display state shown in FIG. 2 (a>), and the selection key 300 corresponding to the erasure mode Pb is operated. Group 71 is set to the upper document erase mode.

In this state, operate the operation keys 30a to 30d as appropriate to move the spot light source 131 to the boundary line 1, as shown in FIG.
Move to any point on a.

When any of the operation keys 30a to 30d is operated, the spot light source 131 is moved with the light emitting element 132 turned on.

When the position specifying key 30e is operated while the spot light source 131 is moved onto the boundary 1i1a, the main processor group 71 sets the position to II, and the main processor group 71 assumes the boundary line 1a from this position. Erase data is set in the memory 140 corresponding to line 1a.

That is, in this memory 140, a high level signal is stored in the address portion corresponding to the upper side of the boundary line 1a, and a low level signal is stored in the address portion of the pond.

After specifying the erase position using the spot light source 131, when the copy key 301 is operated with the original IG+ turned over along its short side and set on the fixed scale 21 side, the specified erase position is The partial image is erased, and an image is formed on the paper Pl as shown in FIG. 4(b).

Note that the erase data stored in the memory 140 corresponds to the state in which the original is set face down on the fixed scale 21 side.

In addition, when the selection key 30g corresponding to the erase mode Pb is operated, the spot light source 131
When an arbitrary position on the document G1 is specified as shown in FIG. 4(C), a boundary line 1b is assumed based on this specified position, and the image in the range Gb is erased as shown in FIG. 4(d). and is copied onto paper P1.

Roughly speaking, by operating the selection key 30Q corresponding to the erase mode Pa, specifying an arbitrary position on the original image using the spot light source 131, and then operating the copy key 30r, the original can be copied using the specified position as a reference. The image below is erased and copied.

Next, as shown in FIG. 5, the document G2 is placed on the fixed scale 22.
A case will be described in which the image in the range indicated by Gc on the right side of the imaginary boundary line IC is erased as shown in FIG.

In this case, first, select key 3 corresponding to erase mode Pd.
0Q, and then specify an arbitrary position on the boundary line IC of the original LiG 2 as shown in FIG. 5 using the spot light source 131. Then, in the main processor group 71,
A boundary IC is assumed based on this specified position,
The image in the range indicated by GC is erased as shown in FIG. 6(b) and copied onto paper P2.

Next, as shown in Figure 7, the origin? iG3 fixed scale 2
In the state where it is set on the 2 side, as shown in FIG.
The case of erasing the image in the range d will be explained.

In this case, first, the display section 30f is brought into the display state shown in FIG. 2(b), and the selection key 3C1 corresponding to the erase mode Pd is pressed.
operate. After this, the spot light source 131 causes the seventh
As shown in the figure, a position corresponding to the intersection of the boundary lines 1dl and ld2 of the original IG2 is specified. Then, in the main processor group 71, the boundary line 1d is set based on this specified position.
l, ld2 are assumed, and thereafter, by the same operation as above,
The image in the range indicated by Gd is erased as shown in FIG. 8(b) and copied onto paper P2.

According to the above embodiment, when the spot light source 131 is moved to specify a desired position on the document image while a desired erasing mode is selected using the selection key 30C, the main processor group 71 uses that position as a reference. , one or two border lines are assumed, and the erasure range is set.

Therefore, the erasing range can be set by simply specifying one point on the document, making the operation of specifying the erasing range easier than in the past.

Further, since it is possible to specify the erasing range with only one point, it is possible to reduce the amount of movement of the spot light source 131 compared to the conventional method. Therefore, spot light source 1
It is possible to extend the life of the 31 drive vJ mechanism.

Next, the scale 53 provided on the first carriage 411
This section explains how to specify the erasure range using .

As shown in FIG. 9, when the document G4 is set on the fixed scale 22 side, as shown in FIG.
A case will be described in which the images in the range indicated by Ge1 and Ge2 are erased.

In this case, first, the display section 30f is set to the display state shown in FIG. 2(a), and the selection key 30q corresponding to the erase mode pb is pressed.
operate. After this, select key 30CI corresponding to pe
to set the scale 53 to movement mode. In this state, the operation keys 30b and 30d are operated to move the scale 53 to a position that coincides with the boundary line 1e1 of the document G4, as shown in FIG. When the memory key 30h of the operation panel 30 is operated, the position of the scale 53 is stored in the memory 141.

Next, select key 30C1 corresponding to Pf on display section 30f
is operated to set the spot light source 131 to the movement mode, and in this state, the operation keys 30a and 30C are operated to move the spot light source 131 to the boundary line le2, as shown in FIG.
When the memory key 30h is operated while moving to an arbitrary position on leB, the positions corresponding to these boundary lines le2 and le3 are stored in the memory 141.

After specifying the erase position in this way, set the original fiG+ on the fixed scale 22 side in the same manner as above, and press the copy key 30.
When r is operated, the main processor group 71 first determines the boundary i! from the data stored in the memory 141. jl
le1 and le2 are assumed, and Get
The erasing range corresponding to is set. And memory 14
Erase data is set at the address corresponding to Get 0. Therefore, first, the supplied paper P4 has the first
As shown in FIG. 0 (b), the image of the portion of the original image corresponding to Ge1 is erased and copied.

When the copying operation for the sheet P4 is completed, the main processor group 71 assumes boundary lines lel and le3 from the data stored in the memory 141, and sets the erasure range corresponding to Ge2 using these boundary lines. Then, erase data is set in the address corresponding to Ge2 of the memory 140. Therefore, the next supplied paper P
4, Ge2 of the original image is shown in FIG. 10(C).
The image corresponding to the part is erased and copied.

Even with such a configuration, it is possible to obtain the same effects as in the above embodiment. Moreover, in this embodiment, when the position of the scale 53 is memorized, the spotlight [
Since the erasure position can be specified using 131, the operation for specifying the erasure range is much faster than before, for example when selectively erasing and copying manuscript images of the same size, such as a list. It is possible.

In the above embodiment, the scale 53 and the spot light source 13
Although the position of 1 is stored in the memory 141, the present invention is not limited to this.

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

[Effects of the Invention] As described in detail above, according to the present invention, when the selection means selects the erasing mode of the original image and the specifying means specifies one point on the original image, the selected point is erased using this one point as a reference. The erase range is set according to the erase mode,
Since the original image is erased, it is possible to provide an image forming apparatus in which the erasing range can be specified with a simple operation.

[Brief explanation of the drawing]

FIG. 1 shows an embodiment of an image forming apparatus according to the present invention, and FIG.
0 is a diagram for explaining the present invention in detail, FIGS. 11 and 12 are diagrams showing an image forming apparatus, FIG. 11 is a general perspective view, FIG. 12 is a side sectional view, and FIG. 13
The figure is a plan view showing the configuration of the operation panel, Figure 14 is a perspective view showing the configuration of the drive section, Figure 15 is a perspective view schematically showing the drive groove of the optical needle, and Figure 16 is the drive mechanism of the pointer. FIG. 17 is a perspective view of a main part showing a spot light source, FIG. 18 is a side sectional view of a main part showing a spot light source,
FIG. 19 is a side sectional view of the main parts showing the arrangement of the erasing array, FIGS. 20 and 21 respectively show the relationship between the erasing array and the photosensitive drum, and FIG. 20 is a perspective view showing only the main parts. Figure 21 is a front view showing only the main parts, Figure 22 shows the configuration of the erasing array, Figure (a) is a side sectional view, and Figure (b) is a partially cut away view. FIG. 23 is a diagram for explaining the contents of the memory, and FIG. 24 is a side sectional view of a main part showing another arrangement example of the erasing array. DESCRIPTION OF SYMBOLS 1...Main body, 2...Document stand, 30...Operation panel, 30a-30d...Operation keys, 30e...Position designation key, 30f...Display section, 30g...Selection key ,
53... Scale, 71... Main processor group,
131... Spot light source, 150... Erasing array,
160...Array drive unit, P...Paper, ph...
Exposure section. Patent Attorney Takehiko Suzue D Tsune Q Figure 5 Figure 6 Figure 7 Figure 8 Figure 18 Figure 19 Figure 24 Figure 20 (a) (b) Figure 22

Claims (5)

[Claims] (1) a specifying means for specifying an arbitrary position on a document image; an erasing means for erasing an image within a set range; and a transfer means for transferring the image from which the set range has been erased onto a transfer material; a selection means for selecting an erasure mode; and a selection means for setting an erasure range of the original according to the erasure mode selected by the selection means with reference to one point of the original specified by the specification means, and the erasure is performed according to the erasure range. 1. An image forming apparatus comprising: a control means for controlling the means to erase an image. (2) The image forming apparatus according to claim 1, wherein the specifying means comprises a light emitting element that is movable in a direction perpendicular to the moving direction of the scanning means and irradiates the original with a spot light. (3) The image according to claim 1, wherein the control means sets the erasure range by assuming one border line in the original image according to the erasure mode selected by the selection means. Forming device. (4) The control means sets the erasure range assuming two boundary lines in the original image according to the erasure mode selected by the selection means. image forming device. (5) The instruction means includes a light emitting element that is movable in a direction perpendicular to the moving direction of the scanning means and irradiates the document with a spotlight, and the control means controls the erasing mode selected by the selection means and the scanning means. 2. The image forming apparatus according to claim 1, wherein the erasing range is set by assuming two boundary lines in the original image according to the position of the document image.