JP2000358131A - Image reader - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an image reader by which a user can easily recognize a print area by displaying a printable area on the basis of a recording paper size and magnification around the original placing area of the image reader and at the surrounding of the original placing area. SOLUTION: When a user uses an operation section to enter desired magnification and a recording paper size in this image reader, LEDs 8, 9 being a plurality of light emitting means arranged at a prescribed interval in an original positioning member 3 of an original platen in the main scanning direction and in the sub-scanning direction are used to display a printable area 11 and a print margin 12. In this case, LEDs showing the respective ends of the printable area 11 are turned on in the main scanning direction and LEDs indicating the respective ends of the printable area 11 measured from a reference line are turned on in the sub-scanning direction. LEDs showing the print margin 12 are turned on at respective ends at the outside of the LEDs showing the printable area 11.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an image reading apparatus such as a copying machine or a scanner, and more particularly to an image reading apparatus having a variable magnification function.

[0002]

2. Description of the Related Art A device that reads an image of a document by a scanner unit and prints the read image, such as an image forming apparatus such as a copying machine, and other devices that read an image of a document and that are connected by a scanner. One of the functions of an image reading apparatus such as a device that outputs read data is a scaling function that enlarges or reduces the size of a read document. The scaling function includes an automatic scaling function and a manual scaling function. The automatic scaling function inputs the size of the recording paper on which the image read from the document is printed into the operation unit, places the document on the platen, reads the size of the document, automatically calculates the print magnification, Print on recording paper. In the manual scaling function, a user manually inputs a desired recording paper size and printing magnification to an operation unit and prints the recording paper.

FIG. 10 is an example of a top view of a document table in a scanner section of a conventional copying machine. When a copying machine is used, a document is placed on a platen glass 2 of a document table 1 in accordance with a document positioning member 3. The document positioning member 3 has a scale 5 indicating the placement position of the document in the main scanning direction and the sub-scanning direction, and a center mark 6 indicating the center placement position of the document.
Is displayed.

At the time of the manual zooming function, the image size of a document that can be printed on recording paper is determined by the input recording paper size and printing magnification. Along with this,
A printable area, which is a range to be printed on recording paper, is determined in a document placement area on the document table 1, and an image of a document outside this printable area is not printed on the recording paper. Therefore, it is necessary to place the document on the document table 1 so that the document image to be printed on the recording paper is located within the printable area.

[0005]

However, in the conventional image reading apparatus, the scale 5 displays an appropriate placement position of the paper size when the original is read at the same magnification. There is no indication of the position where the document is placed according to the magnification or the recording paper size. For this reason, when the user uses the manual scaling function, it is not clear to what extent a document can be printed. Therefore, after inputting the recording paper size and printing magnification, the user subjectively determines the position according to the set desired magnification, places the original, reads the original with the image reading device, and prints it on the recording paper. I was letting it.

In the above method, it is good to print the image of the original at the desired place on the recording paper. However, if the image is printed at a position different from the desired place or if the image is partially missing and printed. In such a case, it is necessary to move the place where the original is placed on the original plate and reprint the original, and the recording paper may be wasted.

Further, as disclosed in Japanese Patent Application Laid-Open No. 7-110639, an area designated on an original is input numerically by an original area designating means, and automatic scaling is performed to solve the problem of the original placement area. There is a solution. However, if such a method is used, the necessity of software for performing complicated processing and the number of components are increased, which is unsuitable for a general-purpose machine.

When a document is printed by changing the size of the original by specifying the recording paper size and the printing magnification, the original is printed in a state where the printable area in the original placing area determined by the recording paper size and the printing magnification is known in advance. If the printer is placed in the printable area, useless printing can be omitted.

Therefore, the present invention displays a printable area based on a print recording paper size and a print magnification in and around a document placement area of an image reading apparatus, so that a user can easily print. It is an object of the present invention to provide an image reading device capable of recognizing the image.

[0010]

The present invention has the following arrangement as means for solving the above-mentioned problems.

(1) In an image reading apparatus which reads an image of a document placed on a platen and outputs the read image as print data having a size corresponding to a print magnification, when a recording paper size and a print magnification are input. And a display unit for displaying a printable area, which can be printed on a recording sheet, in or around the document placing area among the document placing areas on the document table in accordance with the above.

In this configuration, there is provided a means for displaying a printable area in or around the original placing area of the original platen of the image reading apparatus. Therefore, the user can easily see in which area of the mounting table the document should be placed by looking at the display by the display means. Since the troublesome work of determining the area is not required, the waste such as test printing is eliminated, and the printing efficiency is improved.

(2) The display means displays the print margin together with the printable area in or around the document placing area.

In this configuration, the display means provided on or around the document placement area on the document table displays a printable placement area and a print margin. Therefore, in addition to the accurate print target range on the recording paper, information on the print margin, which is a margin, can be known, so that the original can be read while checking the print layout. Here, the print margin is generated around the printable area,
This is an area that becomes a blank space on recording paper in principle, and it cannot be guaranteed that an image placed in this area is printable.

(3) The display means is a light emitting means having a plurality of display portions provided in the main scanning direction and the sub-scanning direction around the document placing area.

In this configuration, the printable area is displayed by light emitting means having a plurality of display sections provided in the main scanning direction and the sub-scanning direction of the document table. Therefore, the user can accurately recognize the printable area of the document by observing the light emission of the light emitting means.

(4) The display means includes a light emitting means having a plurality of display portions provided in the main scanning direction around the document table mounting area, and an upper surface of the document scanning means for moving the lower surface of the document table in the sub scanning direction. And a display member provided in the above.

In this configuration, the light emitting means having a plurality of display portions provided in the main scanning direction of the document table and the mark and the LE provided on the upper surface of the document scanning means movable in the sub scanning direction are provided.
The printable area is displayed by a display unit such as D. Therefore, the printable area is displayed in the main scanning direction by light emission of the light emitting means, and the document scanning means is moved to the end of the printable area in the sub-scanning direction, and the printable area is displayed by a display means such as a mark or LED. Is displayed, the user can accurately recognize the printable area of the document.

(5) The display means includes a light emitting means having a plurality of display portions provided in the main scanning direction on the upper surface of the document scanning means.

In this configuration, a light emitting means having a plurality of display sections is provided in the main scanning direction on the upper surface of the document scanning means movable in the sub scanning direction, and the printable area in the main scanning direction is displayed by the light emitting means. The document scanning means is moved to the end of the printable area in the sub-scanning direction, and the printable area is displayed by the light emitting means. Therefore, the light emitting means having a plurality of display portions provided on the upper surface of the document scanning means can display the printable area in the main scanning direction and the sub-scanning direction, so that the printable area can be reduced while suppressing an increase in the number of parts. It can be displayed accurately.

(6) The light emitting means is a light source for emitting reading light for reading an image on a document.

In this configuration, a light source for irradiating the original with light when reading the original is divided into a plurality of light-emitting areas, and is provided in the original scanning means movable in the sub-scanning direction in the main scanning direction. A printable area is displayed by a certain light source. Therefore, in the main scanning direction, the printable area is displayed by the light emission of the light source provided separately on the document scanning means, and the document scanning means is moved to the end of the printable area in the sub-scanning direction, By displaying the printable area by the light emission of the light source, the printable area can be accurately displayed while suppressing an increase in the number of components.

[0023]

FIG. 1 is a side view showing a schematic configuration example of an image forming apparatus on which an image reading apparatus according to an embodiment of the present invention is mounted. The image forming apparatus 41 includes a scanner section 42 that is an image reading apparatus that reads an image such as a document, an image forming section 43 that forms an image on a recording sheet, and an image forming section 4.
3 includes a paper feed unit 44 that feeds recording paper. Each unit is a unit that can be completely separated, and the image forming apparatus 41 employs a method of combining the units.

The scanner unit 42 illuminates the document table 51 on which the document 50 is placed, a copy lamp 53 which is a light source for irradiating the document 50 with light, and the copy lamp 53 irradiates the document 50 with light other than the document 50 placed on the document table 51. Copy lamp 5
A reflector 52 that focuses the light of No. 3 on the original 50, and the original 50
Mirror 54 and second mirror 5 that reflect light reflected from
5, a third mirror 56, and a photoelectric conversion element (hereinafter, referred to as a CCD) 57 as an imager for reflected light. Further, a first carriage 47 is configured by the reflector 52, the copy lamp 53, and the first mirror 54. Further, the second carriage 48 is configured by the second mirror 55 and the third mirror 56.

The image forming unit 43 includes a drum-shaped photosensitive drum 71, a main charger 72 for charging the surface of the photosensitive drum 71 to a predetermined potential, a developing unit 73 for converting an electrostatic latent image into a toner image, A transfer unit 74 for transferring a toner image onto a recording sheet fed from the paper unit 44, a charge eliminator 75 for removing charges on the surface of the photosensitive drum 71, a cleaning unit 76 for collecting surplus toner, and sensitizing the modulated light subjected to image processing The configuration includes a laser scanning unit (hereinafter, referred to as LSU) 45 for irradiating the body drum 71.

The LSU 45 includes a semiconductor laser 61, a polygon mirror 62, a first f-θ lens 63, and a fourth mirror 6.
4, a fifth mirror 65 and a second f-θ lens 66.

The paper supply section 44 includes a paper supply cassette 77 for storing recording paper, a paper supply roller 78 for supplying recording paper to the image forming section 43, and a fixing device 4 for fixing a toner image to the recording paper.
6. The configuration includes a paper discharge roller 79 for discharging recording paper, and a paper discharge tray 80 for stacking the discharged recording paper.

Referring to FIG. 1, a printing process of an image read by the scanner unit 42 will be described. The first carriage 47 irradiates the original 50 placed on the original table 51 with light of a copy lamp 53 while moving in the sub-scanning direction at a predetermined speed. At this time, the second carriage 48 moves in the sub-scanning direction at half the moving speed of the first carriage. The reflected light of the image from the document 50 is received by a CCD 57 serving as an image pickup means via a first mirror 54 of a first carriage and a second mirror 55 and a third mirror 56 of a second carriage. CCD57
Is supplied to the semiconductor laser 61 after image processing is performed by an image processing unit (not shown), and modulated light corresponding to image information is output from the semiconductor laser 61 to the polygon mirror 62, the first f-θ lens 63, the fourth Mirror 64, fifth mirror 6
5. The light is irradiated onto the surface of the photosensitive drum 71 via the second f-θ lens 66. The surface of the photoconductor drum 71 is charged to a predetermined potential by the main charger 72, and carries an electrostatic latent image by exposure to light emitted from the scanner unit 42. After the electrostatic latent image is converted into a toner image by the developing device 73, it is transferred by the transfer device 74 to a recording sheet conveyed from the sheet feeding cassette 77 via the sheet feeding roller 78. Then, the toner image is fixed on the recording paper by the fixing device 46,
The recording paper is discharged by a discharge roller 79, and is discharged from a discharge tray 80.
To be laminated. Further, the photosensitive drum 7 having completed the transfer process
The surface of 1 is neutralized by a neutralizer 75, and the residual toner is collected by a cleaning unit 76.

FIG. 2 is a top view showing a schematic configuration example of the image reading apparatus according to the present invention. The image reading apparatus shown in FIGS. 2A and 2B is mounted on an image forming apparatus (not shown) as shown in FIG. Platen 1 for image reading device
Are a plurality of light emitting means LEDs 8 arranged at predetermined intervals in an area where the original can be placed in the main scanning direction of the original on the platen glass 2, the original positioning member 3, and the original positioning member 3; In the document placement area of the member 3 in the sub-scanning direction, a plurality of LEDs 9 as light emitting means arranged at predetermined intervals are included. The document placing area is an area where a document can be placed on the document table 1 and is almost equal to the entire surface of the platen glass 2. The document positioning member 3 includes
A scale 5 in the main scanning direction and the sub-scanning direction indicating the document placement position, and a center mark 6 indicating the center placement position of the document are displayed. One side of the platen glass 2 in the main scanning direction is referred to as a reference line 7. The scale 5 indicates an appropriate placement position of the paper size when the original is read at the same magnification, but there is no indication of the position where the original is placed according to a desired magnification at the time of scaling. This is because, at the time of zooming, the position where the document is to be placed, that is, the printable area where an image can be formed on the paper differs depending on the magnification and the paper size.

When the image reading apparatus shown in FIG. 2 is used by using the manual scaling function, the middle point of the original in the main scanning direction is aligned with the center mark 6 and the original is placed on the original placing area of the original platen 1. Place on. In the sub-scanning direction of the original, the original is placed on the original placing area of the original platen 1 with the end of the original abutting on the reference line 7.

The user inputs a desired magnification and a recording paper size to an operation unit (not shown). The control unit (not shown) calculates according to the desired magnification and the recording paper size input to the operation unit (not shown), and selects an LED indicating the end of the printable area 11 from the plurality of LEDs 8 and 9, The printable area 11 is displayed. As a display method, there are a method of displaying only the printable area 11 as shown in FIG. 2A and a method of displaying the printable area 11 and the print margin 12 as shown in FIG. .

When only the printable area 11 is displayed, the control unit (not shown) controls the printable area 11 in the main scanning direction among two sides adjacent to the document table as shown in FIG. The LEDs indicating both ends are turned on one by one. In the sub-scanning direction, one LED indicating the end of the printable area 11 opposite to the reference line side is turned on. Printable area 11
In the case where the print margin 12 is displayed, the control unit (not shown) indicates both ends of the printable area 11 in the main scanning direction among two sides adjacent to the document table as shown in FIG. The LEDs are turned on one by one, and one LED indicating the end of the printable area 11 measured from the reference line in the sub-scanning direction is turned on. Since the area of the print margin is around the printable area 11, the LED indicating the print margin 12 is placed outside the LED indicating each end of the printable area 11 in each of the main scanning direction and the sub-scanning direction. Each of the sections is lit one by one.

FIG. 3 is a block diagram showing the configuration of the control section of the image reading apparatus. ROM 32 and RAM 33
The imaging unit 30, the operation unit 36, the L
Input / output units such as an ED drive circuit 37, a carriage drive circuit 38, an interface 34, and an image data memory 35 are connected. A plurality of LEDs 8 and 9 are connected to the LED drive circuit 37. Carriage drive circuit 3
A carriage drive motor 39 is connected to 8.

The CPU 31 integrally controls each input / output unit according to a program written in the ROM 32 in advance.
Data input / output during this time is stored in a predetermined memory area of the RAM 33. An image forming unit is connected to the interface 34, and read data of characters and images of a document to be output to the image forming unit is input from the CPU 31. The image data memory 35 stores read data output via the interface 34. Carriage drive circuit 38
Is based on the driving data output from the CPU 31.
The carriage driving motor 39 is driven to move a first carriage (not shown) and the like.

FIG. 4 shows a flowchart of the document reading / printing process of the image reading apparatus having the configuration shown in FIG.
First, when printing is performed, the user sets the size of the recording paper to be printed on the operation unit 36 (s1). Next, the user sets the print magnification based on the size of a desired print area, which is a predetermined area of a document that the user wants to print on the recording paper, via the operation unit 3.
Step 6 is performed (s2). The CPU 31 calculates the printable area 11 in the original placing area on the original platen 1 based on the input recording paper size and print magnification. And CPU3
1 displays the printable area 11 of the original by energizing the LED drive circuit 37. The CPU 31 controls the document positioning member 3
Of the plurality of LEDs 8 arranged in the printable area 11
The LEDs respectively indicating both ends in the main scanning direction are turned on one by one. Further, the CPU 31 has an LED indicating an end of the printable area 11 opposite to the reference line side in the sub-scanning direction.
Is turned on one (s3). The user places the original on the original platen 1 and sets the desired print area in the printable area 11 displayed by the LED indicating each end of the plurality of LEDs 8 and 9.
It is checked whether or not it has entered (s4). When the desired print area is within the printable area 11, the user presses the start key of the operation unit 36 which is used for both printing and document reading (s5). The CPU 31 executes reading of the document (s
6) The image forming apparatus connected to the image reading apparatus via the interface 34 prints on recording paper based on the output image data. Thereafter, when the next printing is not performed, the printing process is ended.

At the time of performing the next printing, the user confirms whether the currently set recording paper size and printing magnification are sufficient (s7, s9). When the current conditions are sufficient, the user places the document on the document table 1 and performs the operation of s4 or less. When reading is performed under different conditions, the setting of the recording paper size (s1) and the setting of the printing magnification (s2) are re-input to the operation unit 36, and continuous printing is performed. Further, in the operation of s4, when the desired print area does not fall within the printable area 11 displayed by the LED indicating each end of the printable area among the plurality of LEDs 8.9, the user can change the recording paper size, Alternatively, the print magnification is changed by the operation unit 36 (s8). Thereafter, the user places the document on the document table 1 again and determines whether the desired print area matches the printable area 11 (s4). If there is no problem, the start key of the operation unit 36 is pressed (s5), and reading is continued (s5).
6).

As described above, based on the recording paper and the printing magnification, the printable area 11 is placed on the platen 1 by the plurality of LEDs 8.9.
Selective display allows the user to prevent printing errors such as printing extremely small or extremely large printing paper size, or missing part of the image. It is possible to print in the size desired by the user.

FIG. 5 shows another embodiment of the present invention. The image reading apparatus shown in FIG. 5 has a configuration including a document table 1 and a first carriage 15 which is provided on the lower surface of the platen glass 2 at a predetermined interval and is movable in the sub-scanning direction. . The document table 1 is a platen glass 2 on which a document is placed, a document positioning member 3, and a plurality of light emitting means arranged at predetermined intervals in a region 11 of the document positioning member 3 where a document can be placed in the main scanning direction. The configuration includes the LED 8. A band-shaped mark 21 is provided on the upper surface of the first carriage 15.
Are formed. When the platen 1 is viewed from above, the upper surface of the first carriage 15 and the mark 21 can be seen through the platen glass 2. On the document positioning member 3, a scale 5 indicating the placement position of the document in the main scanning direction and the sub-scanning direction, and a center mark 6 indicating the center placement position of the document are displayed. One side of the platen glass 2 near the center mark 6 is referred to as a reference line 7.

In FIG. 5, a control unit (not shown) controls the LEs indicating both ends of the printable area 11 in the main scanning direction.
D is lit one by one and displayed. In the sub-scanning direction, the first carriage 15 is moved to the end of the printable area and displayed by the band-shaped mark 21 formed on the upper surface of the first carriage 15.

FIG. 6 shows another embodiment of the present invention. FIG.
The image reading apparatus shown in FIG. 1A includes a document table 1 and a first carriage 15 which is provided on a lower surface of a platen glass 2 at predetermined intervals and is a movable image scanning means in a sub-scanning direction. The document table 1 includes a platen glass 2 on which a document is placed and a document positioning member 3. On the upper surface of the first carriage 15, a plurality of LEDs 25, which are a plurality of light emitting units, are arranged at predetermined intervals in the area 11 where the original can be placed in the main scanning direction. When the document table 1 is viewed from above, the upper surface of the first carriage 15 and the LEDs 25 can be seen through the platen glass 2. On the document positioning member 3, a scale 5 indicating the placement position of the document in the main scanning direction and the sub-scanning direction, and a center mark 6 indicating the center placement position of the document are displayed. One side of the platen glass 2 near the center mark 6 is referred to as a reference line 7.

In FIG. 6A, the control unit (not shown) turns on the LEDs 25 respectively indicating the both ends of the printable area 11 in the main scanning direction among the two sides adjacent to the document table. To display. In the sub-scanning direction, the first carriage 15 is moved to the end of the printable area, and is displayed on the upper surface of the first carriage 15 by the LED 25 that displays the printable area in the main scanning direction.

Since the configuration of the image reading apparatus shown in FIG. 6B is almost the same as that of FIG. 6A, the description of the configuration is omitted. The difference is that the printable area in the main scanning direction is displayed by the plurality of LEDs 26 provided on the upper surface of the first carriage in FIG. 6A, but in FIG. The point is that an LED is used as the light source 26 provided on one carriage, and the light source 26 is divided into a plurality of light emitting areas to display a printable area in the main scanning direction.

In FIG. 6 (B), the control unit (not shown) sets one of the light source LEDs 26 indicating both ends of the printable area 11 in the main scanning direction among two sides adjacent to the document table.
Light up one by one and display. In the sub-scanning direction, the first carriage 15 is moved to the end of the printable area, and is displayed on the upper surface of the first carriage 15 by the LED 25 that displays the printable area in the main scanning direction. In this image reading apparatus, as shown in FIG.
In addition, since it is not necessary to newly provide a light emitting unit such as a plurality of LEDs, the printable document placement area 11 can be displayed efficiently with a small number of components.

FIG. 7 shows a flowchart of a document reading / printing process of the image reading apparatus having the configuration shown in FIG.
In this image reading apparatus, the configuration of the control unit that performs control such as image reading is as shown in the block diagram of FIG. 3, and thus the description of the configuration of the control unit is omitted.

When performing printing, the user sets the size of the recording paper to be printed on the operation unit 36 (s10). Next, based on the size of the desired print area, the print magnification is set by the operation unit 36 (s11). At this time, the CPU 31 calculates the printable area 11 in the document placement area on the document table 1 from the input recording paper size and print magnification. Then, the CPU 31 energizes the carriage drive circuit 38 to drive the carriage drive motor 39 to move the first carriage 15 as the document scanning means to the end of the printable area 11 in the sub-scanning direction (s12). Then, the LED drive circuit 37 is energized to change the printable area 11 to the first carriage 1.
5, among the plurality of LEDs 25 arranged in the main scanning direction, one LED indicates both ends of the printable area 11.
The display is turned on one by one (s13). The sub-scanning direction of the document indicates a printable area by the LED 25 indicating the printable area 11 in the main scanning direction provided on the first carriage. The user places the original on the original platen 1 and checks whether the desired print area is within the printable area 11 indicated by the LED 25 (s14). When the desired print area is within the original placing area 11, the start key of the operation unit 36 which is used for both printing and original reading is pressed (s15). When the start key is pressed, the CPU 31 recognizes that the printable area 11 is determined, and moves the first carriage 15 to an initial arrangement position, that is, a predetermined reference position for performing shading correction and the like necessary for document reading. It moves (s16). Thereafter, after performing shading correction for reading the document, the document is read (s1).
7) The image forming apparatus connected via the interface 34 prints on recording paper. When the next printing is not performed, the printing process ends. In s14, when the desired print area is not in the printable area 11 displayed by the LED 25, the recording paper size is changed or the print magnification is changed and input again to the operation unit 36 (s19). Thereafter, the original is placed on the original table 1 again, and it is determined whether the desired print area matches the printable area 11 (s1).
4). When there is the next print (s18), the user determines whether the currently set recording paper size and print magnification are sufficient (s20). If the same conditions are acceptable, the user replaces the document and determines whether the desired print area matches the printable area 11 (s14). When printing under different conditions, the user sets the recording paper size (s10) and the print magnification (s11) using the operation unit 36, and continues the printing process.

By performing such a printing process,
The user can prevent printing errors such as printing extremely small or extremely large with respect to the recording paper size, or missing a part of the image, which is desired by the user. Size printing is possible.

In the above description, the document placing method of the image reading apparatus has been described only with respect to the method of placing the document with the center of the document in the sub-scanning direction aligned with the support position of the center mark on the document table. As a placing method, a corner portion, which is an intersection of two adjacent sides in the main scanning direction and the sub-scanning direction of the document placing area,
There is a method of placing a document with its corners in contact with each other. In this case, when displaying the printable area, as shown in FIG.
Since one corner of the document is brought into contact with the corner 15 of the document placement area designated by the corner mark 14, the control unit (not shown) operates in the main scanning direction at a position indicating an end opposite to the corner. Turn on the LED. In the sub-scanning direction, a control unit (not shown) turns on an LED at a position indicating an end opposite to the corner.

In the above example, the light emitting means having a plurality of display units used as the display means of the printable area is set to L.
In the ED, only the LED at the end is turned on. However, as another method, as shown in FIGS. 9A and 9B, the printable area extends from one end to the other end in the main scanning direction. Multiple LEs in between
There is a method in which D is lit or a plurality of LEDs are lit from the reference line in the sub-scanning direction of the printable area to the other end to display the printable area so that the user can more easily understand the printable area. .

Further, as shown in FIG. 9B, when a light emitting device which emits light of two different colors, such as a two-color LED, is used as a light emitting means for displaying the printable area, the printable area becomes one. The print margin can be displayed in another color. In this method, the printable area and the print margin are displayed in different colors, so that the user can clearly distinguish the printable area from the print margin area.

Further, there is a method of displaying a printable area by blinking the light emitting means at predetermined time intervals. In this method, the visibility of the LED is improved, so that the user can easily recognize the printable area.

[0051]

According to the present invention, the following effects can be obtained. (1) By providing a means for displaying a printable area on or around the original placing area of the original platen of the image reading device, the user can place the original in any area of the placing table by looking at the display by the display means. It is easy to determine whether the document should be placed. Especially at the time of zooming, there is no need for the user to determine the original reading area as in the past, which eliminates waste such as test printing and printing. Efficiency is improved.

(2) The display area provided on or around the original placement area on the original platen displays the printable placement area and the print margin, so that an accurate print target area on the recording paper can be obtained. In addition, since information on a print margin, which is a margin, can be known, an original can be read while checking a print layout.

(3) By displaying the printable area by the light emitting means having a plurality of display portions provided in the main scanning direction and the sub-scanning direction of the document table, the user can see the light emission of the light emitting means. The printable area of the document can be accurately recognized.

(4) Light emitting means having a plurality of display portions provided on the upper surface of the document table in the main scanning direction, and display means such as marks and LEDs provided on the document scanning means movable in the sub-scanning direction. By displaying the printable area, the printable area is displayed by the light emission of the light emitting means in the main scanning direction, and the document scanning means is moved to the end of the printable area in the sub-scanning direction, such as a mark or an LED. By displaying the printable area on the display means, the user can accurately recognize the printable area of the document.

(5) On the upper surface of the original scanning means movable in the sub scanning direction, a light emitting means having a plurality of display portions is provided in the main scanning direction, and a printable area in the main scanning direction is displayed by the light emitting means. Also, by moving the document scanning means to the end of the printable area in the sub-scanning direction and displaying the printable area by the light emitting means, the light emitting means having a plurality of display portions provided on the upper surface of the document scanning means Since the printable areas in the main scanning direction and the sub-scanning direction can be displayed, the printable placement area can be accurately displayed while suppressing an increase in the number of components.

(6) The light source for irradiating the original with light when reading the original is divided into a plurality of light-emitting areas, and the original is scanned by the light source provided in the main scanning direction in the original scanning means movable in the sub-scanning direction. By displaying the printable area, a printable area is displayed in the main scanning direction by light emission of a light source provided separately on the document scanning means, and a document scan is performed at an end of the printable area in the subscanning direction. By moving the means and displaying the printable area by the light emission of the light source, the printable area can be accurately displayed while suppressing an increase in the number of components.

[Brief description of the drawings]

FIG. 1 is a side view illustrating a schematic configuration example of an image forming apparatus including a reading device according to an embodiment of the present invention.

FIG. 2 is a top view illustrating a schematic configuration example of a reading device according to an embodiment of the present invention.

FIG. 3 is a block diagram illustrating a configuration of a control unit of the reading device.

FIG. 4 shows a flowchart of a printing process in the reading device.

FIG. 5 is a top view illustrating another schematic configuration example of the reading device according to the embodiment of the present invention;

FIG. 6 is a top view showing another schematic configuration example of the reading device according to the embodiment of the present invention.

FIG. 7 shows a flowchart of a printing process in the reading device.

FIG. 8 is a diagram showing an example of another original placing method of the reading apparatus according to the embodiment of the present invention.

FIG. 9 is a top view illustrating another schematic configuration example of the reading device according to the embodiment of the present invention.

FIG. 10 is a top view illustrating a configuration example of a conventional reading device.

[Explanation of symbols]

 1- Platen 2- Platen glass 3- Document positioning member 5- Scale 6 Center mark 7- Reference line 8, 9- LED 11- Printable area 12- Print margin

Claims (6)

[Claims] An image reading apparatus reads an image of a document placed on a platen and outputs the read image as print data having a size corresponding to a print magnification. An image reading apparatus, comprising: display means for displaying, in or around a document placement area, a printable area that can be printed on a recording sheet among document placement areas on a document table in accordance with these. 2. The image reading device according to claim 1, wherein the display unit displays a print margin together with a printable area in or around the document placement area. 3. The light-emitting unit according to claim 1, wherein the display unit is a light-emitting unit having a plurality of display units provided in a main scanning direction and a sub-scanning direction around the document placing area. Image reading device. 4. The light emitting means having a plurality of display portions provided in a main scanning direction around the document table mounting area, and an upper surface of the document scanning means for moving a lower surface of the document table in a sub scanning direction. The image reading apparatus according to claim 1, further comprising: a display member provided in the image reading apparatus. 5. The image reading apparatus according to claim 1, wherein the display unit includes a light emitting unit having a plurality of display units provided in a main scanning direction on an upper surface of the document scanning unit. 6. The image reading apparatus according to claim 5, wherein the light emitting unit is a light source that emits reading light for reading an image on a document.