JP2011176614A - Image reading apparatus, image processing apparatus, image adjustment method and image for adjustment - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To appropriately perform image adjustment using an inexpensive image for adjustment. <P>SOLUTION: An image reading apparatus 20 is constituted by being provided with: an image reading part 22 which reads image for adjustment; an image storage part 11 which stores the read image data for adjustment; an image adjustment part 12 which performs image adjustment processing based on the image data for adjustment; a position storage part 13 which stores placement definition information in which two or more loading positions of the image for adjustment whose length in the main scanning direction is shorter than the full length of the main scanning direction of an original base 221 are preliminarily determined; a display control part 14 which performs guide display to a display part 51 to place the image for adjustment at any placing position on which the image for adjustment is not placed among the determined placing positions; a reading control part 15 which is made to read the image when the image for adjustment is placed; a performance control part 16 which performs the guide display until images for adjustment are placed at all the determined loading positions and is made to perform the image adjustment processing when the images for adjustment are placed at all the placing positions; and an instruction acceptance part 17 which accepts a performance instruction of the performance control part 16. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a technique for reading an adjustment image used for image adjustment by an image reading apparatus.

  2. Description of the Related Art Conventionally, an image processing apparatus that processes image data of an original image generated by an image reading device such as a scanner reading an original image displayed on an original surface has been used. There are a copying machine, a facsimile machine, a multi-function machine and the like for processing image data of a read original image.

  Here, the image data of the original image does not necessarily indicate the original image itself that appeared in the original image due to the reading characteristics of the image reading apparatus. Regularly, or when there is a remarkable abnormality in the output image data, input γ adjustment to adjust the image density to reproduce the predetermined image density, or each color of YMCK to reproduce the predetermined color Image adjustment such as MTF (Modulation Transfer Function) / matrix adjustment for adjusting the density of the image is performed.

  For example, in the following Patent Document 1, a document image for image adjustment called a color patch in which gradation patterns of each color of YMCK are placed in parallel in the sub-scanning direction is read by a scanner, and the read image data and a density measuring device are previously stored. Is a technique for comparing the data read from the color patch and calculating a correction value for image adjustment from the amount of deviation.

JP 2000-324352 A

  However, in the past, the user has placed the document image for image adjustment at an inappropriate position on the document table, or forgets to place the document image itself. There is a possibility that image reading may fail, and thus there is a possibility that image adjustment cannot be performed properly.

  In addition, the image image for image adjustment is not frequently used, but when used, it is required to have high quality so that there is no deterioration in image quality. When the gradation patterns of each color of YMCK are placed in parallel in the sub-scanning direction, the original image becomes large, which is expensive.

  Accordingly, the present invention has been made in view of such circumstances, and an object of the present invention is to provide an image reading apparatus capable of appropriately adjusting an image using an inexpensive document image for image adjustment. .

The invention according to claim 1 is a display unit;
An original table on which an original image is placed;
An image reading unit for performing an image reading process for reading a document image placed on the document table;
An image storage unit for storing adjustment image data generated by reading an adjustment image, which is a document image for image adjustment, by the image reading unit;
An image adjustment unit that performs image adjustment processing based on the image data for adjustment stored in the image storage unit;
Stores placement definition information in which two or more placement positions are determined in advance when placing the adjustment image on the document table, the length of the document table being shorter than the total length of the document table in the main scan direction. A position storage unit to
The adjustment image is placed at any placement position where the adjustment image is not placed among the placement positions determined by the placement definition information stored in the position storage unit. A display control unit for performing display processing for displaying guidance on the display unit;
A reading control unit that causes the image reading unit to execute the image reading process when the adjustment image is placed on the document table;
The display control unit is caused to execute the display process until the adjustment image is placed at all placement positions determined by the placement definition information stored in the position storage unit, and the position storage unit An execution control unit that causes the image adjustment unit to execute the image adjustment processing when the adjustment images are placed at all the placement positions determined in the placement definition information stored in
An instruction receiving unit for receiving an execution instruction of the execution control unit;
Is an image reading apparatus.

  In the present invention, when the execution instruction of the execution control unit is received by the instruction receiving unit, the display control unit mounts the adjustment image used in the image adjustment processing at the mounting position predetermined by the mounting definition information. Thus, since the guidance is displayed on the display unit, the user can appropriately perform the work of placing the adjustment image on the document table in accordance with the guidance display.

  In addition, when the adjustment image is placed on the document table by the user, the image adjustment processing is executed by the image adjustment unit. Therefore, the image adjustment processing is executed without the adjustment image being placed on the document table by the user. Thus, the image adjustment process can be appropriately executed.

  Further, since two or more placement positions are defined in the placement definition information, even if image adjustment for the entire length of the document table in the main scanning direction is required, the main display is displayed according to the guidance display by the display control unit. Since the adjustment image whose length in the scanning direction is shorter than the total length of the original table in the main scanning direction is moved to and placed on each placement position, the adjustment image can be read at each placement position. Image adjustment corresponding to the total length of the document table in the main scanning direction can be performed by a method such as combining the read image data for adjustment.

  For this reason, even when image adjustment for the entire length of the document table in the main scanning direction is necessary, it is configured to be smaller than the adjustment image having the length for the entire length of the document table in the main scanning direction. Image adjustment can be performed with an inexpensive adjustment image.

  The invention according to claim 2 is the image reading apparatus according to claim 1, wherein the reading control unit is configured such that the placement position of the adjustment image on the document table is determined by the display control unit. The image reading unit is caused to execute the image reading process when it coincides with the placement position guided and displayed in the display process.

  According to the present invention, when the adjustment image is placed on the document table by the user and the placement position of the adjustment image matches the placement position determined in advance by the placement definition information, the image reading unit reads the image. The processing is executed, and the image adjustment processing is executed by the image adjustment unit based on the read adjustment image data. Therefore, the adjustment image is erroneously read by the user without placing the adjustment image at a predetermined position on the document table, and the image adjustment process is executed based on the erroneously read adjustment image data. Thus, the image adjustment process can be appropriately executed.

According to a third aspect of the present invention, there is provided an image reading apparatus according to the first or second aspect;
And an operation unit that performs an operation based on output image data of the image reading device.

  According to the present invention, the image processing apparatus can achieve the effects of the first or second aspect of the invention.

According to a fourth aspect of the present invention, there is provided an image adjustment method for an image reading apparatus, comprising: a display unit;
An image reading step for performing an image reading process for reading a document image placed on the document table;
An image adjustment step for performing an image adjustment process based on adjustment image data generated by reading an adjustment image that is an image image for image adjustment in the image reading step;
The placement position at which the adjustment image is placed on the document table in which the length in the main scan direction is shorter than the total length of the document table in the main scan direction is determined by placement definition information in which two or more placement positions are determined in advance. A display control step of performing a display process of guiding and displaying on the display unit so as to place the adjustment image at any of the placement positions on which the adjustment image is not placed; ,
A reading control step for causing the image reading step to execute the image reading process when the adjustment image is placed on the document table;
The display control step executes the display process until the adjustment images are placed at all placement positions determined by the previous definition information, and all the placements defined by the previous definition information are executed. An execution control step for executing the image adjustment processing by the image adjustment step when the adjustment image is placed at a placement position;
An instruction receiving step for receiving an execution instruction of the execution control step;
Is an image adjustment method.

  According to the present invention, the effect of the first aspect of the invention can be achieved.

According to a fifth aspect of the present invention, there is provided a document table on which a document image is placed with a scale for determining a placement position of a document image to be read, and a document image placed on the document table. An image reading unit that performs image reading processing, an image storage unit that stores adjustment image data generated by reading an adjustment image that is a document image for image adjustment by the image reading unit, and the image storage unit An image adjustment unit that performs image adjustment processing based on the adjustment image data stored in the image table, and the adjustment image placed on a plurality of predetermined placement positions on the document table. A read control unit that causes the reading unit to execute the image reading process; and the image adjustment unit that performs the image adjustment process on the adjustment image data that is read at each placement position and stored in the image storage unit. Executed The adjustment image used in the image adjustment processing in the image reading apparatus comprising: an execution control unit; and an instruction receiving unit that receives the execution instruction for causing the execution control unit to execute the image adjustment processing in the image adjustment unit. Because
The adjustment image is an adjustment image with a scale that is placed at each placement position by being aligned with the scale on the document table.

  In this invention, the user can appropriately display the adjustment image at a plurality of predetermined placement positions by an easy operation of aligning the scale on the adjustment image with the scale on the document table. It can be placed.

  A sixth aspect of the present invention is the adjustment image according to the fifth aspect, wherein the length in the main scanning direction is shorter than the total length of the document table in the main scanning direction.

  In the present invention, the adjustment image is configured to be smaller than the adjustment image having a length corresponding to the entire length of the document table in the main scanning direction, so that the adjustment image can be created at a low cost.

  According to the present invention, it is possible to provide an image reading apparatus capable of appropriately adjusting an image using an inexpensive document image for image adjustment.

1 is a longitudinal sectional view schematically showing an internal configuration of a multifunction machine according to an embodiment. 1 is a block diagram illustrating an electrical configuration of a multifunction machine according to an embodiment. (A) illustrates the placement position of the adjustment image on the document table, and (b) illustrates the placement definition information in which a plurality of placement positions are defined. It is a flowchart which shows the flow of a process when image adjustment is performed. It is a figure which shows an example by which a display control part carries out guidance display on the display part so that the image for adjustment may be mounted in the defined mounting position. It is a figure which shows an example of the scale attached | subjected to the image for adjustment.

  Hereinafter, an image reading apparatus and an image processing apparatus according to an embodiment of the present invention will be described with reference to the drawings. In the following embodiments, an example in which the image reading apparatus and the image processing apparatus according to the present invention are integrated into a multifunction machine having functions such as a color copy, a scanner, a facsimile, and a printer will be described.

  As shown in FIG. 1, the multifunction device 1 is roughly composed of an image reading device 20 and a device main body 30. The image reading apparatus 20 includes a document conveying unit 21, an image reading unit 22, and an image processing unit 23 (not shown).

  The document transport unit 21 realizes ADF, and includes a document placing table 241, a paper feed roller 232, a transport drum 233, a paper discharge roller 234, and a paper discharge tray 235. The document placing table 241 is a place on which the document is placed. The documents placed on the document placing table 241 are taken one by one by the paper feed roller 232 and conveyed to the conveying drum 233. The document that has passed through the transport drum 233 is discharged to a discharge tray 235 by a discharge roller 234.

  The image reading unit 22 optically reads an image of a document to generate image data, and outputs the image data to an image processing unit 23 (not shown). The image reading unit 22 is provided in the apparatus main body 3. The image reading unit 22 includes a contact glass 221, a light source 222, a first mirror 223, a second mirror 224, a third mirror 225, a first carriage 226, a second carriage 227, an imaging lens 228, a CCD (Charge CoupLED Device) 229. Is provided.

  In the image reading unit 22, a white fluorescent lamp such as a cold cathode fluorescent tube is used as the light source 222, and the first mirror 223, the second mirror 224, the third mirror 225, the first carriage 226, the second carriage 227, and the image formation. A lens 228 guides light from the document to the CCD 229. In the image reading unit 22, for example, a white LED is used as the light source 222.

  The CIS 231 is provided downstream of the image reading unit 22 in the document conveyance direction. The CIS 231 is provided at a position where the surface opposite to the document surface read by the image reading unit 22 can be read in the document conveyance path.

  The contact glass 221 indicates a document table on which a document image according to the present invention is placed. The light source 222 and the first mirror 223 are supported by the first carriage 226, and the second mirror 224 and the third mirror 225 are supported by the second carriage 227.

  As an original reading method of the image reading apparatus 20, a flat bed reading mode in which the image reading unit 22 reads an original placed on the contact glass 221 and an ADF reading mode in which the original is taken in by ADF and read in the middle of the conveyance. There is.

  In the flat bed reading mode, the light source 222 irradiates a document placed on the contact glass 221, and reflected light for one line in the main scanning direction is reflected in the order of the first mirror 223, the second mirror 224, and the third mirror 225. Then, the light enters the imaging lens 228. The light incident on the imaging lens 228 is imaged on the light receiving surface of the CCD 229. The CCD 229 is a one-dimensional image sensor, and simultaneously processes an image for one line of the original image in the main scanning direction. When the reading for one line is completed, the first carriage 226 and the second carriage 227 are moved in the direction orthogonal to the main scanning direction (sub-scanning direction, arrow Y direction), and the next line is read.

  In the ADF reading mode, the originals placed on the original placing table 241 are taken one by one by the paper feed roller 232, and the originals are read on the reading position 230 provided in the conveyance path from the conveyance drum 233 to the paper discharge tray 235. When passing, the light source 222 irradiates the original, and the reflected light for one line in the main scanning direction is reflected by the first mirror 223, the second mirror 224, and the third mirror 225 in this order and enters the imaging lens 228. The light incident on the imaging lens 228 is imaged on the light receiving surface of the CCD 229. Subsequently, the document is transported by the document transport unit 21 and the next line is read.

  In the following description, those not particularly described will be described on the assumption that the image of the document is read in the flatbed reading mode.

  The image processing unit 23 (not shown) performs correction processing such as shading correction, level correction, and gamma correction, image data compression or expansion processing, enlargement or reduction processing on the image data read by the image reading unit 22. Image correction processing (image processing processing) is performed. The processed image data is used when an image is formed by the recording unit 40 described later.

  In addition, the multifunction machine 1 includes an apparatus main body 30 and a stack tray 60 disposed on the left side of the apparatus main body 30. The apparatus main body 30 has been transported from a plurality of paper feed cassettes 461, a paper feed roller 462 that feeds sheets (recording media) from the paper feed cassette 461 one by one to the recording unit 40, and a paper feed cassette 461. And a recording unit 40 that forms an image on a sheet. Further, a manual feed tray 471 is provided. From this manual feed tray 471, paper of a size that is not stored in any paper feed cassette, paper on which an image is already formed on one side (back paper), or an OHP sheet is provided. An arbitrary recording medium can be placed, and is fed into the apparatus main body 3 one by one by a paper feed roller 472.

  The recording unit 40 is acquired by the static eliminator 421 that neutralizes residual charges from the surface of the photosensitive drum 43, the charging device 422 that charges the surface of the photosensitive drum 43 after static elimination, and the image reading unit 22, and is acquired by the image processing unit. An exposure device 423 that outputs a laser beam to expose the surface of the photosensitive drum 43 based on the image data corrected in 23 and forms an electrostatic latent image on the surface of the photosensitive drum 43; Development devices 44C, 44M, 44Y, and 44K that form toner images of each color of cyan (C), magenta (M), yellow (Y), and black (K) on the photosensitive drum 43, and a photosensitive member. A transfer drum 49 on which the toner images of the respective colors formed on the drum 43 are transferred and overlaid, a transfer device 41 for transferring the toner image on the transfer drum 49 to the paper, and the paper on which the toner image is transferred Heated and a fixing device 45 for fixing the toner image to the sheet.

  Note that toner is supplied to cyan, magenta, yellow, and black colors from a toner supply container (toner cartridge) (not shown). Further, conveyance rollers 463 and 464 that convey the sheet that has passed through the recording unit 40 to the stack tray 60 or the discharge tray 48 are provided.

  An operation unit 50 is provided in front of the apparatus main body 30. The operation unit 50 includes a display unit 51 including an LCD (Liquid Crystal Display) and the like, and an operation key unit 52 for inputting an operation instruction from the operator.

  The operation key unit 52 includes a numeric keypad, a start key, a function switching key unit, and the like. The start key is a key for receiving an instruction to start each operation such as a copy operation and a scan operation from the operator. The numeric keypad is a key for receiving an instruction for designating the number of copies from the operator. The function switching key unit is a key for receiving from the operator a function switching instruction for switching between a scanner function, a facsimile function, a printer function, a copy function, an image adjustment function described later, and the like.

  The display unit 51 includes an LCD (Liquid Crystal Display) or the like, and includes a touch panel unit combined with a touch panel function. The display unit 51 displays various operation screens, and allows an operator to input execution commands for various functions by touching a display surface (displayed operation keys).

  FIG. 2 is a block diagram showing an electrical configuration of the image forming apparatus 1 shown in FIG. As shown in FIG. 2, the multi-function device 1 includes the document conveying unit 21, the image reading unit 22, the recording unit 40, the operation unit 50, the image processing unit 23, the communication unit 30, and the control unit 10. I have. The communication unit 30 communicates various data with a predetermined external device (not shown) such as a personal computer.

  The control unit 10 includes a RAM (Random Access Memory) having a function of temporarily storing data and a function as a work area, a flash memory that stores a program in advance, and a CPU that reads and executes the program from the flash memory The CPU, the RAM, and the flash memory are configured to exchange data via a data bus. The CPU executes a process corresponding to the contents of the program by appropriately executing the program stored in the flash memory.

  The control unit 10 functions as an image storage unit 11, an image adjustment unit 12, a position storage unit 13, a display control unit 14, a reading control unit 15, an execution control unit 16, and an instruction receiving unit 17. .

  The image storage unit 11 includes a memory such as a RAM, and stores adjustment image data generated by the image reading unit 22 reading an adjustment image that is a document image for image adjustment.

  The image adjustment unit 12 performs image adjustment processing based on the adjustment image data stored in the image storage unit 11.

  For example, the image adjustment unit 12 does not always indicate the original image itself that has appeared in the document image due to the reading characteristics of the image reading unit 22, because the image data of the document image read by the image reading unit 22 is not necessarily displayed. Input gamma adjustment that adjusts the image density to reproduce the predetermined image density periodically, such as after reading a predetermined number of sheets or after a predetermined time has elapsed, or when there is a significant abnormality in the output image data In addition, image adjustment processing such as MTF (Modulation Transfer Function) / matrix adjustment for adjusting the density of each color of YMCK to reproduce a predetermined color is performed.

  In the image adjustment process, for example, an adjustment image for image adjustment on which a gradation pattern of each color of YMCK is posted is read by the image reading unit 22, and the adjustment image is read in advance by the read adjustment image data and a density measuring device or the like. This is a process of comparing the read data and calculating a correction value when the image processing unit 23 corrects the image data read by the image reading unit 22 from the deviation amount.

  The position storage unit 13 is configured by a memory such as a RAM, and the placement position when placing an adjustment image on the contact glass 221 whose length in the main scanning direction is shorter than the total length of the contact glass 221 in the main scanning direction. Two or more predetermined placement definition information is stored. Note that the method for storing the placement position definition in the position storage unit 13 includes, for example, displaying an operation screen for inputting and setting the placement position definition information on the display unit 51, and the administrator of the multifunction device 1 or the like. The configuration may be changed as appropriate, such as storing information input on the operation screen.

  For example, in the placement position definition information, as shown in FIG. 3A, the total length in the main operation direction of the contact glass 221 is Y0, and the length in the main scanning direction of the adjustment image is from the total length Y0 of the contact glass 221. If the length Y1 is short, two placement positions MY1 and MY2 are set as shown in FIG.

  Thus, when a plurality of placement positions are defined in the placement definition information, even if the adjustment image is configured to have a length Y1 shorter than the main scanning direction of the contact glass 221, the contact glass 221 is provided. The image necessary for the image adjustment processing over the entire length Y0 in the main scanning direction can be read. That is, the adjustment image is placed at the placement position MY1, the image for adjustment is read by the image reading unit 22, and then the adjustment image is placed at the placement position MY2, and the image for adjustment is read by the image reading unit 22. And an adjustment image over the entire length of the contact glass 221 in the main scanning direction can be read.

  For this reason, even when the image adjustment for the entire length of the contact glass 221 in the main scanning direction is necessary, the contact glass 221 is configured to be smaller than the adjustment image having the length for the entire length of the contact glass 221 in the main scanning direction. In addition, an image for the entire length of the contact glass 221 in the main scanning direction can be read with an inexpensive adjustment image.

  The display control unit 14 places the adjustment image on any placement position where the adjustment image is not placed among the placement positions determined by the placement definition information stored in the position storage unit 13. Display processing for displaying guidance on the display unit. When the display control unit 14 guides and displays any of the placement positions, the display control unit 14 temporarily stores the guidance display of the placement position.

  When the placement position of the adjustment image on the contact glass 221 matches the placement position guided and displayed by the display processing by the display control unit 14, the reading control unit 15 performs image reading processing on the image reading unit 22. To be executed.

  For example, the reading control unit 15 determines whether or not the above-described mounting positions match with each other for adjustment among the mounting positions determined by the mounting definition information stored in the position storage unit 13 by the display control unit 14. Any placement position where no image is placed is displayed as guidance, and the user places an adjustment image on the contact glass 221 based on the guidance display, and the placement is performed by the operation key unit 52 and the touch panel function. When an input for completion of positioning is received, the image reading unit 22 reads an image for one line of the adjustment image at a predetermined time interval, and main scanning of the image data of the read adjustment image for the one line is performed. Whether the start position and the end position in the direction coincide with the start position and the end position in the main scanning direction when the adjustment image is placed at each placement position stored in advance in the RAM by the display control unit 14. Size It carried out by a process of repeated.

  The method for determining whether or not the placement positions of the adjustment originals by the reading control unit 15 are not limited to this, and a method of separately providing a sensor for detecting the placement position, etc. The configuration may be changed.

  When the reading control unit 15 determines that the mounting position of the adjustment image matches the mounting position temporarily stored in the RAM by the display control unit 14, the reading control unit 15 sets the mounting position as a mounting position that has been mounted. The placement position displayed by guidance by the display control unit 14 is temporarily stored in a region different from the region in which the placement position is stored, and the image reading unit 22 is caused to execute image reading processing. The image reading process is a process of reading the adjustment image placed on the contact glass 221 by the image reading unit 22 and storing the read image data of the adjustment image in the image storage unit 11 as described above. Indicates.

  The execution control unit 16 causes the display control unit 14 to execute display processing until adjustment images are placed at all placement positions determined by the placement definition information stored in the position storage unit 13, When the adjustment images are placed at all placement positions determined by the placement definition information stored in the storage unit 13, the image adjustment unit 12 is caused to execute the image adjustment process.

  The execution control unit 16 controls the operation of each unit related to image adjustment, and is stored in the position storage unit 13 based on the mounting position that has been temporarily stored in the RAM by the reading control unit 15. If it is determined that the adjustment images are not placed at all placement positions determined by the placement definition information, the display control unit 14 is caused to execute the display process. On the other hand, when the execution control unit 16 determines that the adjustment images have been placed at all placement positions determined by the placement definition information stored in the position storage unit 13, the execution control unit 16 performs image adjustment processing on the image adjustment unit 12. Let it run.

  The instruction receiving unit 17 receives an execution instruction from the execution control unit. For example, the instruction receiving unit 17 is configured to give an execution instruction to the execution control unit 16 when an input of execution of the image adjustment processing is received by a user pressing a function switching key provided in the operation key unit 52 or the like. ing.

  That is, the image reading apparatus 20 according to the present invention includes a contact glass 221 serving as a document table, a display unit 51, an image reading unit 22, an image storage unit 11 and an image adjustment unit 12 provided in the control unit 10, and position storage. The unit 13, the display control unit 14, the reading control unit 15, the execution control unit 16, and the instruction receiving unit 17 are configured.

  Hereinafter, the flow of processing when image adjustment is executed will be described. As shown in FIG. 4, when the execution instruction receiving unit 17 receives an execution instruction from the execution control unit 16 (S1, instruction receiving step), the execution control unit 16 stores the placement stored in the RAM by the reading control unit 15. Based on the completed placement position (the first time is none), it is determined that no adjustment image is placed on all placement positions defined by the placement definition information stored in the position storage unit 13, and display control is performed. The display process is executed by the unit 14 (S2, execution control step; NO).

  The display control unit 14 is a mounting position determined by the mounting definition information stored in the position storage unit 13 based on the mounting position (the first time is none) stored in the RAM by the reading control unit 15. Among them, display processing for guiding and displaying on the display unit 51 so as to place the adjustment image at any placement position where the adjustment image is not placed is performed, and the placement position is temporarily stored in the RAM. (S3, display control step).

  For example, the display control unit 14 is used for adjustment to at least one of the placement start position YS1 and the placement end position YE1 of the placement position MY1 defined by the placement definition information illustrated in FIGS. Display processing for displaying guidance on the display unit 51 so as to place an image is performed.

  Here, the guidance display is, for example, adjusted by the user based on the displayed numerical value even if the mounting position determined in the mounting definition information is displayed as a numerical value indicating the distance from the upper end of the contact glass 221. Since it is difficult to place an image for use, the placement position is user-friendly so that the user can easily place the adjustment image at a predetermined placement position based on the content displayed on the display unit 51. This indicates that it will be replaced with a different term.

  For example, as shown in FIG. 5, the display control unit 14 guides and displays the placement position MY <b> 1 (FIG. 3) determined by the placement definition information on the display unit 51. In this example, when a user uses a copy function or the like, a document image to be read is placed on the periphery of the contact glass 221 so that the document can be easily placed at a predetermined placement position according to the size of the document. When a scale for determining the placement position or an identifier for identifying the document size (for example, “B5”) is attached, the upper end YS1 (FIG. 3) of the placement position MY1 is “upper end”, and the placement position MY1. The lower end YE1 (FIG. 3) is displayed as “B5 scale”.

  Returning to FIG. 4, when the adjustment image is placed by the user and an input of placement completion is received by the touch panel function or the like, the reading control unit 15 determines the placement position of the adjustment image as described above. The display control unit 14 determines whether or not it matches the placement position once stored in the RAM. If the placement position of the adjustment image does not match the placement position temporarily stored in the RAM by the display control unit 14 (S4, reading control step; NO), the process returns to step S2, and the display control unit 14 again performs the placement. When the guidance image is displayed so that the adjustment image is placed at the placement position, and the placement position of the adjustment image is determined to match the placement position temporarily stored in the RAM by the display control unit 14 (S4, reading) Control step; YES), the placement position is temporarily stored in the RAM as the placement position that has been placed, and the image reading section 22 is caused to execute image reading processing.

  The image reading unit 22 executes image reading processing and stores the read adjustment image data in the image storage unit 11 (S5, image reading step).

  Subsequently, the execution control unit 16 executes the process of step S2 again, and is determined by the placement definition information stored in the position storage unit 13 based on the placement position that has been placed and stored in the RAM. If it is determined that the adjustment images are not placed at all placement positions, the display control unit 14 is caused to execute display processing (S2, execution control step; NO). On the other hand, when it is determined that adjustment images are placed at all placement positions determined by the placement definition information stored in the position storage unit 13 (S2, execution control step; YES), the image adjustment unit 12 Causes image adjustment processing to be executed.

  The image adjustment unit 12 performs image adjustment processing based on the image data for adjustment stored in the image storage unit 11 by image reading processing by the image reading unit 22 (S6, image adjustment step). Note that, as illustrated in FIG. 3 above, the image adjusting unit 12 reads and generates an adjustment document at each placement position when a plurality of placement positions are defined in the placement definition information. Since the adjusted image data is stored in the image storage unit 11, the adjustment image data corresponding to the entire length of the contact glass 221 in the main scanning direction is used by combining the adjustment image data. Then, the image adjustment process described above is performed.

  As described above, when the execution instruction of the execution control unit 16 is received by the instruction reception step (S1) by the instruction reception unit 17, the display control step by the display control unit 14 is performed by the execution control step (S2) by the execution control unit 16. (S3) is executed, and the guide image is displayed on the display unit 51 so that the adjustment image used in the image adjustment process is placed at the placement position determined in advance by the placement definition information. Accordingly, the operation of placing the adjustment image on the contact glass 221 can be appropriately performed.

  Further, the adjustment image is placed on the contact glass 221 by the user, and the placement position of the adjustment image is set in advance by the placement definition information in the reading control step (S4) by the reading control unit 15. Is read, the image reading process is executed by the image reading step (S5) by the image reading unit 22, and the loading stored in the position storage unit 13 by the execution control step (S2) by the execution control unit 16 is executed. If it is determined that the adjustment image is placed at all placement positions determined by the placement definition information, the image adjustment unit 12 performs an image adjustment step (S6) on the read adjustment image data. Based on this, image adjustment processing is executed.

  Therefore, the adjustment image is erroneously read without the adjustment image being placed at a predetermined position of the contact glass 221 by the user, and the image adjustment process is executed based on the erroneously read adjustment image data. Thus, the image adjustment process can be executed appropriately.

  In addition to the above-described configuration, the adjustment image is placed at the placement position determined by the placement definition information by aligning the adjustment image with the scale attached to the periphery of the contact glass 221. A tick mark may be attached to.

  For example, as shown in FIG. 6A, the adjustment image is marked with a scale “1) A6” “2) B6”, and the scale “1) A6” and the contact glass 221 The adjustment image is placed at a predetermined placement position by matching the scale of “A6” attached to the periphery. Further, as shown in FIG. 6B, the scale of “2) B6” and the scale of “B6” attached to the periphery of the contact glass 221 are aligned to be different from the above-described placement position. The adjustment image is placed at the placement position.

  That is, the user can easily adjust the adjustment image to the placement position guided and displayed by the display control unit 14 by an easy operation of aligning the scale attached to the adjustment image and the scale attached to the document table. Can be placed.

  In step S4 (reading control step), the reading control unit 15 determines whether or not the placement position of the adjustment image matches the placement position temporarily stored in the RAM by the display control unit 14. However, instead of this, it may be configured to determine whether or not the adjustment image is placed on the document table.

  For example, the reading control unit 15 determines whether or not the adjustment image is placed on the document table by setting the placement position determined by the placement definition information stored in the position storage unit 13 by the display control unit 14. One of the mounting positions on which the adjustment image is not placed is guided and displayed, and the user places the adjustment image on the contact glass 221 based on the guidance display, and the operation key unit 52 and the touch panel function. For example, when an input for completion of placement is received, the image reading unit 22 reads an image for one line of the adjustment image at a predetermined time interval, and image data for one line of the adjustment image is read. It can be configured so as to be performed by repeatedly executing the process of determining whether or not the reading is possible. In this case, it is possible to avoid the image adjustment process being performed without the adjustment image being placed on the contact glass 221.

  In each of the above embodiments, an example of the image processing apparatus according to the present invention has been described as a multifunction machine having a scanner function, a facsimile function, a printer function, a copy function, and the like. However, the image processing apparatus according to the present invention is a complex machine. It is not limited to the machine, and may be another image processing apparatus (copy machine, scanner apparatus, etc.).

  In addition, this invention is not restricted to the structure of the above-mentioned embodiment, A various deformation | transformation is possible. The configurations and processes shown in FIG. 1 to FIG. 6 are merely examples of the embodiment according to the present invention, and are not intended to limit the present invention to the embodiment.

1 Image processing device (multifunction machine)
51 Display unit 10 Control unit 11 Image storage unit 12 Image adjustment unit 13 Position storage unit 14 Display control unit 15 Reading control unit 16 Execution control unit 17 Instruction receiving unit 20 Image reading device 22 Image reading unit 23 Image processing unit 221 Document table ( Contact glass)

Claims (6)

A display unit;
An original table on which an original image is placed;
An image reading unit for performing an image reading process for reading a document image placed on the document table;
An image storage unit for storing adjustment image data generated by reading an adjustment image, which is a document image for image adjustment, by the image reading unit;
An image adjustment unit that performs image adjustment processing based on the image data for adjustment stored in the image storage unit;
Stores placement definition information in which two or more placement positions are determined in advance when placing the adjustment image on the document table, the length of the document table being shorter than the total length of the document table in the main scan direction. A position storage unit to
The adjustment image is placed at any placement position where the adjustment image is not placed among the placement positions determined by the placement definition information stored in the position storage unit. A display control unit for performing display processing for displaying guidance on the display unit;
A reading control unit that causes the image reading unit to execute the image reading process when the adjustment image is placed on the document table;
The display control unit is caused to execute the display process until the adjustment image is placed at all placement positions determined by the placement definition information stored in the position storage unit, and the position storage unit An execution control unit that causes the image adjustment unit to execute the image adjustment processing when the adjustment images are placed at all the placement positions determined in the placement definition information stored in
An instruction receiving unit for receiving an execution instruction of the execution control unit;
An image reading apparatus comprising:   When the placement position of the adjustment image on the document table coincides with the placement position guided and displayed in the display process by the display control unit, the reading control unit displays the image on the image reading unit. The image reading apparatus according to claim 1, wherein a reading process is executed. The image reading apparatus according to claim 1 or 2,
An image processing apparatus comprising: an operation unit configured to perform an operation based on output image data of the image reading apparatus. An image adjustment method of an image reading apparatus comprising a display unit and a document table on which a document is placed,
An image reading step for performing an image reading process for reading a document image placed on the document table;
An image adjustment step for performing an image adjustment process based on adjustment image data generated by reading an adjustment image that is an image image for image adjustment in the image reading step;
The placement position at which the adjustment image is placed on the document table in which the length in the main scan direction is shorter than the total length of the document table in the main scan direction is determined by placement definition information in which two or more placement positions are determined in advance. A display control step of performing a display process of guiding and displaying on the display unit so as to place the adjustment image at any of the placement positions on which the adjustment image is not placed; ,
A reading control step for causing the image reading step to execute the image reading process when the adjustment image is placed on the document table;
The display control step executes the display process until the adjustment images are placed at all placement positions determined by the previous definition information, and all the placements defined by the previous definition information are executed. An execution control step for executing the image adjustment processing by the image adjustment step when the adjustment image is placed at a placement position;
An instruction receiving step for receiving an execution instruction of the execution control step;
An image adjustment method comprising: An original table on which an original image is placed, which has a scale for determining the placement position of the original image to be read, and an image reading process for reading the original image placed on the original table An image storage unit that stores adjustment image data generated by reading an adjustment image that is an original image for image adjustment by the image reading unit, and the adjustment image data stored in the image storage unit An image adjustment unit that performs an image adjustment process based on the image reading unit, and the image reading unit executes the image reading process for the adjustment images placed at a plurality of predetermined placement positions on the document table. A read control unit that executes the image adjustment process on the image data for adjustment read at each placement position and stored in the image storage unit, and the actual control unit. A the adjustment image to be used in the image adjustment processing in instruction reception unit and an image reading device including a to the control unit receives the execution instruction for executing the image adjustment processing on the image adjustment unit,
An adjustment image with a scale on which the adjustment image is placed at each placement position by being aligned with the scale on the document table.   6. The adjustment image according to claim 5, wherein the length in the main scanning direction is shorter than the total length of the document table in the main scanning direction.