JP2008124615A - Image reader and image forming apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an image reader that precisely recognizes a processed part of processed paper having its top and reverse surfaces equally processed, and an image forming apparatus that suitably arranges image data according to information on the recognized processed paper. <P>SOLUTION: The image reader reads a processed sheet and recognizes processed parts of the sheet based upon image data of both the top and reverse surfaces. The image forming apparatus displays a plurality of blocks, enclosed with the recognized processed parts of the sheet, on a screen of an operation section based upon information on the recognized processed parts of the sheet, and allocates the image data to the respective blocks as operated at the operation section. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an image reading apparatus that reads a sheet-like document and an image forming apparatus such as a copying machine, a facsimile machine, and a printer, and more particularly to an image reading apparatus and an image forming apparatus that handle sheets that have been processed such as perforations. Is.

  In recent years, an electrophotographic image forming apparatus has been used in the field of light printing such as POD (Print On Demand), and is required to meet various needs regarding image quality and recording materials. In particular, with respect to the recording material, processed paper that has been previously perforated or creased may be used.

  FIG. 16 shows an example of perforated processed paper as an example of such processed paper. FIG. 16A shows processed paper that has been subjected to perforation processing, and has been subjected to printing processing in advance. FIG. 16B shows a case where an additional image is formed on the processed paper by the image forming apparatus. A sheet on which an image has been formed in advance by printing as shown in the figure is referred to as a reprint paper, and an additional image formed on the reprint paper is referred to as a reprint. As shown in the figure, a necessary output image can be obtained by forming an image by changing information of a part of the image little by little according to the use and purpose of the output image.

  When an image is formed on processed paper as shown in the figure, it is necessary to input information on the processing position in advance and arrange the image data according to the processing position information. However, the processing position of the processed paper is various, and each time the processed paper is changed, it is necessary to input the layout information of the processing section, and there is a problem that the input operation is troublesome and an error may occur at the time of input. there were.

In order to deal with such a problem, Patent Document 1 discloses a technique in which a label sheet (arrangement information) is scanned by processing on a label paper platen as a processed paper, and is extracted and stored by recognizing the outer edge portion of the label. ing.
JP 2002-204351 A

  However, in the invention described in Patent Document 1, when the boundary between the processed portion and other portions is unclear, the boundary portion may not be recognized during image recognition. In order to avoid such a recognition failure, it is necessary to use a specific label paper or the like in which the outer edge of the label is colored in the invention described in Patent Document 1. Further, in the case of a paper having regularity in its print pattern and processing portion arrangement, such as 16 (a) reprint paper, the boundary portion is further difficult to recognize.

  In view of the above-described problems, the present invention accurately arranges image data based on the information of the recognized processing paper and the image reading device that accurately recognizes the processing portion of the processing paper that has been subjected to processing processing that matches the front and back. The object is to obtain an image forming apparatus.

  The above object is achieved by the invention described below.

(1) An image reading apparatus comprising: a reading unit that reads the front and back surfaces of a processed sheet to acquire image data; and an image recognition unit that performs image recognition on the image data. Is an image reading apparatus for recognizing a processed portion of a sheet based on both image data of the front surface and the back surface of the sheet.

  (2) The image reading apparatus according to (1), wherein the image recognizing unit determines a position where the processing unit recognized on the front surface and the back surface of the sheet coincides with the processing unit of the sheet.

(3) The image reading apparatus includes an operation unit that performs various operations and a display unit that performs various displays.
The recognized sheet processing unit and the confirmed sheet processing unit are displayed on the display screen of the display unit, and the confirmed sheet processing unit can be changed by an operation from the operation unit. The image reading apparatus according to (2).

(4) The processing of the sheet is perforation processing, and the image recognition means has storage means for storing a database of perforation information,
The image reading apparatus according to any one of (1) to (3), wherein the processing unit of the sheet is recognized by referring to a database of perforation information stored in the storage unit.

(5) The reading unit includes a first reading unit that reads one side of the sheet and a second reading unit that reads the other side of the sheet,
The image reading apparatus according to any one of (1) to (4), wherein the reading methods of the first reading unit and the second reading unit are different.

  (6) The first reading means is a reduction optical-type reading means having a mirror, a lens, and a CCD sensor, and the second reading means is an equal-magnification optical-type reading means having a contact image sensor. The image reading apparatus according to (5).

  (7) The image reading apparatus includes a conveyance path for conveying a sheet, and the both sides are read by one conveyance by conveying the sheet to the conveyance path (5) or The image reading apparatus according to (6).

  (8) An image forming apparatus comprising the image reading apparatus according to any one of (1) to (7).

(9) The image reading apparatus according to any one of (1) to (7), a storage unit that stores image data, an image forming unit that outputs an image on a sheet based on the image data, and an operation that performs various operations An image forming apparatus comprising: means; display means for performing various displays; and control means.
The control means displays, on the screen of the display means, a plurality of blocks surrounded by the processed part of the sheet or the edge of the sheet and the processed part based on the information of the determined processed part of the sheet, and stores in the storage means An image forming apparatus, wherein stored image data is allocated to the block by operating the operation means.

  (10) The control means compares the size of the block with the size of image data to be allocated to the block, and changes the size of the image data based on the comparison result (9 ).

  (11) The image forming apparatus according to (9) or (10), wherein the control unit displays, together with the plurality of blocks, image data assigned to each block on a display screen of the display unit. .

(12) The image forming apparatus has a test printing mode,
In the trial printing mode, it is possible to select whether to output the image as the image data of the processed portion of the determined sheet as well as image output based on the image data assigned to a plurality of blocks (9) The image forming apparatus according to any one of (11) to (11).

(13) An image forming apparatus having detection means for detecting positions of processed portions on the front and back surfaces of a processed sheet, a control means, and image forming means for forming an image on the sheet,
The image forming apparatus according to claim 1, wherein the control unit determines a portion where the front surface and the rear surface processing unit detected by the detection unit coincide with each other as a processing unit of the sheet.

(14) The image forming apparatus includes an operation unit that performs various operations and a display unit that performs various displays.
The detected sheet processing unit and the confirmed sheet processing unit are displayed on the display screen of the display unit, and the determined sheet processing unit can be changed by an operation from the operation unit. The image forming apparatus according to (13).

  According to the present invention, an image reading device that accurately recognizes a processed portion of processed paper that has been subjected to matching processing on the front and back sides, and an image forming device that appropriately arranges image data based on the recognized processed paper information are obtained. It becomes possible.

Although the present invention will be described based on an embodiment, the present invention is not limited to the embodiment.
[Image forming apparatus]
FIG. 1 is a cross-sectional view of an image forming apparatus having an image reading apparatus. The image forming apparatus H includes an image reading device G, a control unit (control unit) C, an operation unit 3, an image forming unit 4, a paper feeding / conveying unit 5, a fixing device 6, and an image writing unit 7.

  The image forming unit 4 includes a photosensitive drum 4A, a charging unit 4B, a developing unit 4C, a transfer unit 4D, a separating unit 4E, a cleaning unit 4F, and the like.

  The paper feeding / conveying means 5 includes a paper feeding cassette 5A, a first paper feeding means 5B, a second paper feeding means 5C, a conveying means 5D, a paper discharging means 5E, and an automatic duplex copying paper feeding means (ADU) 5F.

  The image reading device G reads an image on one side or both sides of the document D, and the photoelectrically converted analog signal is converted into an image document after analog processing, A / D conversion, shading correction, image compression processing, etc. in the image processing unit. Sent to the inserter 7. Details of the image reading device G will be described later.

  In the image writing unit 7, output light from the semiconductor laser is applied to the photosensitive drum 4 </ b> A of the image forming unit 4 to form a latent image. In the image forming unit 4, processes such as charging, exposure, development, transfer, separation, and cleaning are performed.

  The sheet S fed by the first sheet feeding unit 5B is temporarily stopped by the second sheet feeding unit 5C, conveyed to the transfer unit 4D in synchronization with the image formation timing, and the image is transferred to the sheet S by the transfer unit 4D. Is done. The sheet S carrying the image is heated and pressed and fixed by the fixing device 6, discharged from the paper discharge means 5E to the outside of the apparatus, and placed on a paper discharge tray or conveyed to a post-processing device. When performing double-sided copying (image formation), the single-sided image-processed paper S sent to the automatic double-sided copy paper feeding unit 5F is turned upside down, and after the back side image processing is performed again by the image forming unit 4, it is discharged. It is discharged by the paper means 5E.

  The operation unit 3 displays various information on the LCD (liquid crystal screen) and functions as a display unit. In addition, an operation instruction can be input by a user touching a portion of the touch panel arranged on the LCD. Further, a keyboard and mouse (not shown) are connected to the operation unit 3, and these touch panel, keyboard, and mouse also function as operation means.

C is a control unit (control means) that performs various controls, C1 is a CPU, T1 is an image recognition means that performs image recognition by computing image data obtained by digitizing the read signal, and M1 and M2 are respectively It is a memory as a storage means, and functions as an image memory and a database memory, respectively.
[Image reading device]
FIG. 2 is a cross-sectional view of the image reading apparatus according to the embodiment. The image reading apparatus G includes an automatic document feeding unit 1 that automatically conveys a document, a reading unit 2 that reads a document conveyed by the automatic document feeding unit 1 or a document placed on a platen glass, And the operation unit 3.

  The automatic document feeder 1 feeds a plurality of sheet-like documents D placed on a document placing table 11 one by one to a conveyance path by a separation roller 12, and conveys a document composed of a plurality of guide members and a plurality of rollers. The paper is conveyed by the unit 13 and discharged onto the document discharge table 15.

  The image of the document D being conveyed is read by the reading unit 2 at the document image reading position 21 in the conveyance path.

  When reading images on both sides of the document, the document reversing unit 16 comprising a pair of rollers and a conveyance path switching guide reverses the document D on which the image on the front surface (first surface) has been read, and again conveys the document. Sent to the unit 13. The document from which the image on the back surface (second surface) is read is discharged onto the document discharge table 15.

  When there is only one document D, the document D can be placed on the document table glass 22 of the reading unit 2 and the document image can be read by scanning the optical system of the reading unit 2.

  The reading unit 2 is a unit for reading a document image and obtaining digitized image data. The document image irradiated with light from the lamp 231 at the document image reading position is converted into a first mirror unit 23 and a second mirror. The unit 24 and the imaging lens 25 form an image on the image sensor 26 that is a linear CCD sensor.

  The signal output from the image sensor 26 is A / D converted by an IC disposed in the vicinity of the image sensor 26 and sent to the controller C. The sent signal is subjected to processing such as shading correction and compression in the image processing unit of the control unit C, and is stored as image data in the memory M1 of the control unit C.

  FIG. 3A is a diagram illustrating an operation flow of the image reading apparatus according to the first embodiment. First, the sheet reading setting operation will be described with reference to a detailed view of the display screen.

  4 and 5 are detailed views of the display screen in the operation unit 3. By pressing D1 on the display screen, a processing paper mode setting screen for reading the processing portion of the processed paper (sheet) shown in FIG. 4 is displayed. When reading the perforated portion, the perforation is selected by pressing the D11 button. In addition, when selecting a pushing sheet or a punch hole as another type of processed paper, it can be selected by pressing the D12 or D13 button. Two or more of these selections can be selected at the same time. The “streaked paper” here refers to processed paper that has been creased in advance, and the “punch hole” refers to processed paper that has been subjected to perforation processing for file binding on one side of the paper. is there.

The selection of double-sided reading or single-sided reading can be selected exclusively by pressing the single-sided D14a button or the double-sided D14b.
[Perforation information database]
When the processed paper database is stored in the memory M2 as a storage unit and image recognition is performed with reference to the perforation information database, the processed paper database D18 button or the data registration D2 button is pressed to display FIG. Is displayed. In the figure, data stored in the past in the memory M2 can be called by inputting a file name in the D23 column. The reason for using the database is that it is possible to improve the recognition accuracy of the processing unit in image recognition. FIG. 4 shows that the file “0009” is selected, and the information on the processed paper stored in the file is displayed in the D19 column.

  When registering data in the processed paper database, on the display screen shown in FIG. 5, information on the processed portion of the processed paper that has been read, or information input by using an input means such as a keyboard from the screen, After the file name is assigned to the file, the file is saved in the memory M2 by pressing the save button.

  Here, the “perforation information” is a concept including “perforation hole information” and “perforation arrangement information”. The perforation hole information is information on an opening including a perforation pitch, a perforation length, and a perforation width. In the example shown in the figure, a perforation opening of 0.5 mm × 7.0 mm (width × length) is continuously processed with a period of 14.0 mm.

  When a part of the perforation information of the read file is used, image recognition is performed using only necessary information by selecting each B button of perforation hole information D24 and perforation arrangement information D25. It is possible. For example, this is a case where image recognition is performed using only perforation hole information.

  Returning to the description of the flow in FIG. When performing double-side reading, the double-sided reading of the document D is performed by selecting the double-sided reading D14b button in FIG. 4 and then pressing the reading execution D17 button (steps S11 and S12).

  Subsequently, in step S13, the image recognition means T1 performs image recognition of the perforated surface processing portion from the front surface image data and the back surface processing portion from the back surface image data.

  "Image recognition" performs correction processing such as gradation correction and skew correction on image data, and then performs feature extraction, and whether the feature pattern approximates the feature of the processing type that performs image recognition This is done by identifying When the processed paper database D18 button is selected at the time of this image recognition, the image of the processed portion of the sheet is recognized by referring to the perforation information database stored in the memory M2. .

  In step S14, the processed portions on the front surface and the back surface are compared, and a matching portion is extracted. In the comparison, the processed data on the back surface is converted so that the direction of the processed data on the back surface coincides with that on the front surface. For example, in the conveyance path such as the automatic document feeder 1 shown in FIG. 2, the processing portion data on the back surface is reversed so that the direction of the processing portion on the front surface coincides with the reverse.

  The part extracted in step S15 is defined as “determined processing part”. In addition, the processing part that matches on the front and back is defined as the “determined processing part” because, in the perforated paper, the processing part has a hole that penetrates the paper, so that the processing positions on the front and back sides match. . The same applies to processed paper such as line pushing paper and punch holes. The series of determinations and image recognition are performed by the image recognition unit T1 and the control unit (control unit) C.

  Finally, the machining unit data determined in step S16 is stored in the memory M2, and the process is terminated.

  In the embodiment, the example in which the image recognition of the processing unit is performed using the image data of each of the front surface and the back surface is described. However, the present invention is not limited to this, and averaging or statistical processing of a plurality of pieces of image data is performed. By doing so, the detection (image recognition) accuracy of the processing part can be improved. Such reading of a plurality of sheets can be executed by pressing the accumulation process D15 button in FIG.

  In this way, an image for accurately recognizing the processed portion of the processed paper that has been subjected to the matching processing on the front and back sides is determined by determining the position where the processed portion recognized on the front surface and the back surface of the sheet matches as the processed portion of the sheet. A reading device can be obtained.

  FIG. 3B is a diagram illustrating an operation flow of the image reading apparatus according to the second embodiment. The flow shown in the figure is the same as that shown in FIG. 3A except for the broken line frame A, and the other flow is the same as that shown in FIG. In step S13 (b) of FIG. 3B, the image recognition means T1 recognizes the perforated processed portion from both the front and back image data. For example, a matching portion is extracted as a feature portion from both image data, and the processing portion is recognized from the extracted result.

  In this way, by recognizing the processed part of the sheet by using the image data of both the front and back surfaces of the sheet, an image that accurately recognizes the processed part of the processed paper that has been subjected to the matching processing on the front and back sides. A reading device can be obtained.

FIG. 6 is a diagram illustrating an operation flow of the image reading apparatus according to the third embodiment. In the flow shown in the figure, the user corrects and changes the image-recognized processing unit by operating the operation unit 3. Further, FIG. 3A is obtained by changing only the inside of the broken line frame B of FIG. 3A from FIG. 3A, and the other flow is the same as FIG. A description will be given below.
[Image recognition of processed parts]
FIG. 7 is a diagram illustrating an example of a processing unit that has undergone image recognition. FIG. 7A and FIG. 7B show a processing unit that reads a processed paper having a perforation as shown in FIG. 16A and recognizes the image. FIG. 7A shows an example in which an image recognition unit T1 recognizes an image of a processed part on the front surface, and FIG. Each shows a state in which a part of the perforated portion is not recognized.

  FIG. 7C shows the confirmed processed part, where the confirmed processed part in FIGS. 7A and 7B is “determined processed part”. FIG. 7D shows the confirmed processed part, the recognized processed part on the front surface, and the processed part on the back surface. Further, X1 and X2 in FIG. 7D are processing portions whose image is recognized only on the back surface, and Y1 is a processing portion whose image is recognized only on the front surface. The state shown in FIG. 7D is displayed on the operation unit 3, and on the display screen, the processing unit of the sheet determined by various operations by the user is changed. The operation procedure will be described below.

  FIG. 8 is a detailed view of the display screen in the operation unit 3. The display screen shown in the figure is displayed by pressing the read execution D17 button in FIG. 4 and pressing the correction / confirmation D16 button after executing the reading. In FIG. 8, by selecting the front D31 button, the back D32 button, and the confirmed processing portion D33 button, the processing portions corresponding to (recognized) the respective selections are displayed over the confirmation screen D30. The example shown in FIG. 7 displays FIG. 7 (d).

  Returning to the description of the flow of FIG. In step S151 in FIG. 6, as shown in FIG. 8, the image-recognized front surface processing unit, the back surface processing unit, and the confirmed processing unit are displayed on the display screen of the operation unit 3.

  Subsequently, the machining unit determined by the user operating the operation unit 3 is changed. This is done by selecting an arbitrary perforation range by operating a touch panel or a mouse on the display screen shown in FIG. 8, and then adding or changing by pressing the perforation addition D34 button or perforation deletion D35 button. It is possible to delete and change. For example, in the example shown in the confirmation screen D30 in FIG. 8, the processing parts X1 and X2 whose image is recognized only on the back surface and the processing part Y1 whose image is recognized only on the front surface are selected on the touch panel and then the perforation addition D34 button is pressed. Thus, these portions can be additionally changed to “determined processed portions”. Alternatively, when a print image on the supplementary printing paper is erroneously recognized as a perforation, it can be deleted and changed by selecting the range with a mouse or the like and then pressing the perforation deletion D35 button.

  In this manner, the recognized sheet processing unit and the confirmed sheet processing unit are displayed on the display screen of the operation unit 3, and the sheet processing unit determined by the operation from the operation means can be changed. Since the recognition failure of the processing unit can be prevented, it is possible to obtain an image reading apparatus that accurately recognizes the processing unit of the processed paper.

  FIG. 9 is a cross-sectional view of an image reading apparatus according to another embodiment. In the embodiment shown in the figure, unlike the image reading apparatus shown in FIG. 2, the image reading is performed by two reading means. In addition, it replaces with description by attaching | subjecting the same code | symbol about the part which is common in FIG.

  Reference numeral 2 denotes first reading means, and 27 denotes second reading means. As described with reference to FIG. 2, the first reading unit 2 is a reduction optical type reading unit including a mirror (mirror units 23 and 24), a lens (imaging lens 25), and a linear CCD sensor. The second reading unit 27 includes a contact image sensor (CIS) on a line using CMOS arranged in the conveyance path 14 and is a unit of optical magnification optical reading.

  When reading an image of a document, the document D is conveyed one by one by the automatic document feeding means 1, and one surface (front surface) of the first image is read by the first reading means 2 at the document image reading position 21 of the conveyance path 14. The image is read. Subsequently, the reading of the image on the other side (back side) of the document D conveyed by the conveyance roller pair is performed by the second reading unit 27 provided in the conveyance path 14.

  Thus, by providing two reading means, it is possible to read images on both sides of the document D by one transport, and there is an advantage that the reading speed is improved.

  Further, compared to the first reading unit of the reduction optical system type, the second reading unit of the equal magnification optical type has a characteristic that the depth of field is shallow. Even when the same document is read, the image data read by both types of reading means does not completely match.

In this way, by adopting a configuration in which the reading methods are different between the two reading means, even if reading of the processed portion of the sheet by one of the reading means fails at the time of reading both surfaces, the other reading means The possibility of being able to do becomes high. That is, it is possible to reduce the rate at which the reading omission of the processing unit occurs on both sides, that is, it is possible to obtain an image reading apparatus that accurately recognizes the processing unit of the processed paper.
[Image forming apparatus]
FIG. 10 is a diagram illustrating an operation flow of the image forming apparatus according to the embodiment. In the image forming apparatus H, image formation is performed using the processed paper (or the same type of processed paper) that has been read as the original D by the image reading apparatus G and recognized (detected) in the processing unit in advance as the paper S.

First, in step S21, processed portion data of the processed paper is read from the memory M2. The data of this processing section is stored in advance in the memory M2 by the operation flow shown in FIGS. 3A and 3B or by input. Subsequently, in step S22, image data is read, and the read image data is assigned to a block. The term “block” as used herein refers to a (recognized) processed part of a sheet or a region surrounded by (recognized) processed part and (recognized) sheet edge. The operations in steps S21 and S22 will be described with reference to the display screen on the operation unit 3 of the image forming apparatus H.
[Assignment of image data to blocks]
11 to 14 are detailed views of the display screen in the operation unit 3. In order to read out the processed part data of the processed paper, the database reading D41 button in FIG. 11 is pressed, and a screen as shown in FIG. 5 is displayed. Select a file name on the screen or directly enter the D23 column. The file name can be input to read out (S21).

  Subsequently, by pressing an image readout / image allocation button D44, the screen is switched to the display screen shown in FIG. FIG. 12 shows a screen for assigning image data. In the D50 column of the figure, the read processed part data is displayed as a thumbnail (reduced). Numbers 1 to 10 in the D50 column are blocks, and numbers are automatically assigned by the control unit C. The user can select a block by pressing a number on the display screen. In the example shown in the figure, a state where 1 and 3 are selected is shown. To read the image data to be allocated to the selected block, the screen is switched to the screen of FIG. 13 by pressing the image selection D51 button.

  FIG. 13 is a selection screen for reading image data. The D61 column in the figure displays files stored in the memory M1. A desired image data file is selected in the saved file list D62.

  The setting of how to arrange the selected file in the selected block is performed in the D63 column. Image data can be arranged in a block by setting each of the magnification D65 button, margin D66, and reference position D67 in the D63 field.

  When the magnification D65 button is set to automatic, the block size (D65b column) is compared with the size of the image data to be allocated to the block (D65a column). Based on the comparison result, the selected block contains The image data is resized to fit. This size change is performed by the control unit (control means) C. At this time, the magnification may be determined in consideration of the setting of the margin D66, and the magnification is determined so that the aspect ratio of the original image data is fixed or the aspect ratio is ignored and the maximum magnification can be assigned. May be.

  By pressing the OK button, selection and assignment are completed (S22 in FIG. 10), and the screen returns to the setting screen in FIG.

  Although an example in which one piece of image data is assigned to each block has been described as an embodiment, the present invention is not limited to this, and a plurality of pieces of image data may be combined and arranged in one block. Furthermore, instead of fixed image data, variable data (Variable Data) slightly different in each block as shown in FIG. 16B may be assigned (D52 button in FIG. 12).

Until the allocation of the image data to all the blocks is completed (No in S23), the process returns to step S22 and the image data allocation is repeated. On the other hand, if the allocation of the image data has been completed, a flow for performing the trial printing in the subsequent step S24 and subsequent steps is performed.
[Trial printing mode]
A broken line frame C in FIG. 10 is an operation flow for performing test printing. Pressing the preview D53 button in FIG. 12 switches to the display screen in FIG. FIG. 14 shows a screen for preview display. The image data assigned to each block is displayed on the display screen (column D71) of the display means 3 together with a plurality of blocks. When test printing is performed (Yes in S24), the D72 and D73 buttons in the figure are pressed. When the recognized processed part is output as an image (Yes in S25), the D73 button is selected, and when the processed part is not output as an image (No in S25), the D72 button is selected.

  Outputting the (recognized) processed portion as an image when performing a test print is effective when the test print is output using plain paper instead of processed paper. With respect to plain paper that has not been processed, the processed portion can be output as image data such as a dotted line, and the arrangement relationship with the image data arranged in the block can be confirmed. Thus, there is an advantage that precious processed paper is not consumed by using plain paper for trial printing.

  If there is no problem with the output result of the trial printing (Yes in S28), an image is output to the processed paper as the main printing, or the set image data is stored in the memory M2 as a series of data (S29). On the other hand, if there is a problem in the output result (No in S28), the flow after step S22 is performed again.

  In this way, the processing unit of the sheet is recognized by the image reading device G, and the image data is allocated to a plurality of blocks surrounded by the recognized processing unit of the sheet and the edge of the sheet, thereby matching the front and back. It is possible to obtain an image reading apparatus that accurately recognizes a processed portion of processed paper that has been processed, and an image forming apparatus that appropriately arranges image data based on the recognized processed paper information.

  FIG. 15 is a diagram illustrating a part of an image forming apparatus according to another embodiment. This figure shows the periphery of the second paper feeding means 5C of FIG. In the example shown in the figure, the processing section of the sheet is read not by the image reading apparatus G of FIG.

  28a is a detecting means for detecting the processed portion on the front surface of the processed sheet conveyed through the conveying path, and 28b is a detecting means for detecting the processed portion on the back surface. The processing unit of the paper S (processed paper) conveyed from the upstream paper feed cassette 5A is detected by the detection units 28a and 28b. The detection means is a two-dimensional line sensor arranged in a direction orthogonal to the sheet conveyance direction, and detects the position of the processing portion of the sheet to be conveyed. The detection method may be a CIS method or other optical detection method or a contact type detection sensor.

  Note that the detection means 28a (28b) is arranged with a longer interval than the maximum feeding length of the processed paper to be conveyed with respect to the second paper feeding means 5C. With such an arrangement, the processed paper whose detection of the processing unit position has been detected by the detection units 28a and 28b is stopped before the second paper supply unit 5C, and the processing unit is recognized during the stop. Therefore, there is an advantage that the processed paper whose processed portion position is detected can be continued and used for image formation.

  As described above, the processing unit of the processed paper is detected by providing a dedicated detection unit for detecting the processing position separately from the image reading apparatus, and the operation flow of FIGS. 3 and 10 is performed based on the detected result. As a result, it is possible to obtain an image forming apparatus that accurately detects a processing portion of processed paper that has been subjected to matching processing on the front and back sides, and that appropriately arranges image data based on the detected information on the processed paper.

1 is a diagram illustrating a main part of an image forming apparatus according to an embodiment. 1 is a cross-sectional view of an image reading apparatus according to an embodiment. It is a figure which shows the operation | movement flow of the image reading apparatus which concerns on 1st, 2nd embodiment. 5 is a detailed view of a display screen in the operation unit 3. FIG. 5 is a detailed view of a display screen in the operation unit 3. FIG. FIG. 10 is a diagram illustrating an operation flow of an image reading apparatus according to a third embodiment. It is the figure which showed the example of the process part which recognized the image. 5 is a detailed view of a display screen in the operation unit 3. FIG. It is sectional drawing of the image reading apparatus which concerns on other embodiment. FIG. 6 is a diagram illustrating an operation flow of the image forming apparatus according to the embodiment. 5 is a detailed view of a display screen in the operation unit 3. FIG. 5 is a detailed view of a display screen in the operation unit 3. FIG. 5 is a detailed view of a display screen in the operation unit 3. FIG. 5 is a detailed view of a display screen in the operation unit 3. FIG. It is a figure which shows a part of image forming apparatus which concerns on other embodiment. It is a figure which shows an example of a perforated processed paper.

Explanation of symbols

G image reading apparatus H image forming apparatus 1 automatic document feeding means 2 (first) reading means 3 operation section (display means, operation means)
4 Image forming means 14 Conveyance path 26 Image sensor (CCD sensor)
27 Second reading means (contact image sensor)
28a, 28b detection means C control unit (control means)
C1 CPU
T1 image recognition means M1, M2 memory

Claims (14)

Reading means for reading the front and back surfaces of the processed sheet to obtain image data;
An image recognizing device for recognizing image data, wherein the image recognizing unit recognizes a processed portion of the sheet based on both the image data of the front surface and the back surface of the sheet. An image reading apparatus. The image reading apparatus according to claim 1, wherein the image recognizing unit determines a position where the processing unit recognized on the front surface and the back surface of the sheet matches as a processing unit of the sheet. The image reading apparatus includes operation means for performing various operations;
Display means for performing various displays,
On the display screen of the display means, display the recognized sheet processing part and the confirmed sheet processing part,
The image reading apparatus according to claim 2, wherein the determined processing section of the sheet can be changed by an operation from the operation means. The processing of the sheet is perforation processing, and the image recognition means has storage means for storing a database of perforation information,
4. The image reading apparatus according to claim 1, wherein the processing unit of the sheet is recognized by referring to a database of perforation information stored in the storage unit. The reading means has a first reading means for reading one side of the sheet and a second reading means for reading the other side of the sheet,
The image reading apparatus according to claim 1, wherein the first reading unit and the second reading unit have different reading methods. The first reading means is a reduction optical type reading means having a mirror, a lens, and a CCD sensor, and the second reading means is an equal magnification optical type reading means having a contact image sensor. Item 6. The image reading apparatus according to Item 5. 7. The image reading apparatus according to claim 5 or 6, wherein the image reading apparatus has a conveyance path for conveying a sheet, and reads both surfaces in one conveyance by conveying the sheet to the conveyance path. Image reading apparatus. An image forming apparatus comprising the image reading apparatus according to claim 1. An image reading apparatus according to any one of claims 1 to 7,
Storage means for storing image data;
Image forming means for outputting an image on a sheet based on the image data;
Operation means for performing various operations;
Display means for performing various displays;
An image forming apparatus having a control unit,
The control means displays, on the screen of the display means, a plurality of blocks surrounded by the processed part of the sheet or the edge of the sheet and the processed part based on the information of the determined processed part of the sheet, and stores in the storage means An image forming apparatus, wherein stored image data is allocated to the block by operating the operation means. 10. The control unit according to claim 9, wherein the control unit compares the size of the block with the size of image data to be allocated to the block, and changes the size of the image data based on the comparison result. Image forming apparatus. 11. The image forming apparatus according to claim 9, wherein the control unit displays the image data allocated to each block together with the plurality of blocks on a display screen of the display unit. The image forming apparatus has a test printing mode,
10. In the trial printing mode, it is possible to select whether to output an image as the image data of the determined processed portion of the sheet, together with image output based on image data assigned to a plurality of blocks. 12. The image forming apparatus according to any one of 11 to 11. Detection means for detecting the positions of the processed portions on the front and back surfaces of the processed sheet;
Control means;
Image forming means for forming an image on a sheet;
An image forming apparatus having
The image forming apparatus according to claim 1, wherein the control unit determines a portion where the front surface and the rear surface processing unit detected by the detection unit coincide with each other as a processing unit of the sheet. The image forming apparatus includes operation means for performing various operations;
Display means for performing various displays,
On the display screen of the display means, display the detected sheet processing part and the confirmed sheet processing part,
The image forming apparatus according to claim 13, wherein the determined processing portion of the sheet can be changed by an operation from the operation unit.

Images