JP4822579B2 - Image reading apparatus and abnormality processing method thereof - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an image reading apparatus that conveys a sheet-like document and reads image information with an image sensor, and more particularly to transfer of the image information to a host computer (also referred to as a host).
[0002]
[Related technologies]
FIG. 10 shows a sectional view of a sheet-through type scanner SO related to the present invention (this scanner is under investigation and is not known). In the sheet-through scanner SO, when an instruction to start reading is given from an external device such as a host computer (not shown) or an operation panel (not shown), the document 6 placed on the document table 5 is drawn by the paper feed roller 1. Then, the sheet is conveyed by the feed roller 2, the conveyance roller 3, and the conveyance roller 12, separated from the other original by the separation roller 13, and is one line from the front image sensor 4 with reference to the arrival of the original at the sensor P1. The image data is written into the line memory 50 through the image processing unit 49 in the processing device 540 shown in FIG. The CPU 51 writes the image data for one line written in the line memory 50 in the image memory 55 by designating the write start position X1 shown in FIG. The image data for one line is sent a predetermined number of times (n times) at a predetermined pitch as the document is conveyed, so that the CPU 51 changes the writing position to the image memory 55 one after another. As shown in FIG. At the same time, image data for one line is written from the back image sensor 9 to the line memory 50 through the image processing unit 49 in the processing device 540. The CPU 51 writes the image data for one line written in the line memory 50 in the image memory 55 by designating the write start position X shown in FIG. Image data for one line is sent a predetermined number of times (n times) at a predetermined pitch as the document is conveyed, so that the CPU 51 changes the writing position X to the image memory 55 one after another as shown in FIG. To the image memory 55. Note that the image memory 55 has a sufficient capacity for image information of the document 6, and stores image information for a plurality of documents 6 so that the document 6 can be conveyed and read asynchronously with the transfer to the host computer 57. It can be stored.
[0003]
Thereafter, based on the arrival of the document at the sensor P2, the two illumination lamps 18 and 20 simultaneously illuminate the front and back of the document 6 passing through the gap between the flat glass plates 19 and 21, and the reflecting mirrors 8 and 11 and the image light path 14 are illuminated. , 15, the image of the original is connected to the film photographing unit 17 at the same time, and is reduced by the lens 16 and slit exposed on the film surface. The film F is transported and controlled in the direction of the arrow by the film photographing control unit 52. Thereafter, the document 6 passes through the paper discharge roller 7 and is discharged to the paper discharge tray 10.
[0004]
The paper feed roller 1, the feed roller 2, the transport rollers 3, 12, the separation roller 13, and the paper discharge roller 7 are driven and rotated by a motor (not shown). The image light paths 14 and 15 are arranged outside the transport path, and are configured to form an image on the film photographing unit 17 by a plurality of reflection mirrors (not shown).
[0005]
[Problems to be solved by the invention]
However, in the above-described sheet-through scanner SO, while the document 6 is being conveyed, the CPU 51 determines whether or not the document 6 is normally conveyed until the sensor P1 detects the document 6 from the start of feeding. Arrival time, document passage time while sensor P1 detects document 6, document arrival time from sensor P1 detecting document 6 to sensor P2 detecting document 6, sensor P2 detecting document 6 The document passage time while the sensor P2 detects the document 6 until the sensor P3 detects the document 6, and the document passage time while the sensor P3 detects the document 6 If the conveyance failure occurs for some reason while the document 6 is being monitored, the conveyance must be stopped. At this time, the image reading must be stopped at the same time, and the abnormality must be immediately transmitted to the host computer 57.
[0006]
This situation will be described with reference to the timing chart of FIG. 13. When the first sheet is fed, the original is detected by the sensor P1, and the image is read based on the arrival of the original at the sensor P1. . When image reading is started, image transfer to the host 57 is started. The image transfer is performed asynchronously with the conveyance of the document 6 and the image reading because the image memory 55 has a sufficient capacity for the image information of the document 6. Thereafter, the original is conveyed, passes through the sensor P1, detects the original with the sensor P2, and performs film shooting with reference to the arrival of the original at the sensor P2. Further, the original is conveyed, passes through the sensor P2, detects the original with the sensor P3, passes through the sensor P3, and is discharged. For example, when the third document 6 stays in the sensor P3, it is determined that the paper is jammed, the conveyance is stopped, and the image reading must be stopped. Accordingly, the conveyance of the fourth original 6 is stopped on the sensor P2, and the fifth original 6 is stopped on the sensor P1, and the image reading of the fifth original 6 is also stopped. At this time, the film shooting is finished up to the fourth sheet, but the image transfer to the host 57 is finished only up to the second sheet, and the image information of the third and fourth sheets is stored in the image memory 55. It is a state stored in. Here, when the image reading is stopped, a plurality of pieces of image information already stored in the image memory 55 are discarded, and the abnormality is immediately transmitted to the host computer 57. It is difficult to determine where to start reading at the time of re-reading, and the same image information that has been taken is not transmitted to the host computer 57 on the film F, and the image information managed by the host computer 57 and the film F There is a problem that a difference occurs between the upper image information.
[0007]
As shown in the timing chart of FIG. 14, when the image transfer time to the host 57 is short, for example, when the third document 6 stays in the sensor P2, it is determined that the paper is jammed, the conveyance is stopped, and the image is stopped. Reading must also be stopped. Accordingly, the conveyance of the fourth document 6 is stopped on the sensor P1, and the second document 6 is stopped on the sensor P3. At this point, film shooting has been completed only up to the third sheet, but image transfer to the host 57 has been completed up to the fourth sheet. That is, when a conveyance failure occurs between the image reading position by the image memory and the film photographing position and all the image information has been transmitted to the host computer 57, the transmitted image information is transmitted to the host computer 57. The film F is not photographed, and there is a problem that a difference occurs between the image information managed by the host computer 57 and the image information on the film F.
[0008]
The present invention has been made under such circumstances, and after returning from a document conveyance failure such as a paper jam, it is not necessary to re-feed the discharged document and read the image, An image reading apparatus that can improve the efficiency of image reading, and that can be easily backed up with film that has been taken even if the image information transferred to the host computer and managed for some reason is lost, and its abnormality processing method It is intended to provide.
[0009]
[Means for Solving the Problems]
  In order to achieve the above-mentioned object, in the present invention, the image reader is connected to the following (1) to (6) And the abnormal processing method of the image reading device7) Or (9).
  (1)Connected to the host computer and based on instructions from the host computerIn an image reading apparatus that conveys a sheet-like document and reads an image information portion recorded on the document, an image sensor that reads the image information portion recorded on the document and image information read by the image sensor are stored. An image memory, and a control unit that controls to transmit a conveyance abnormality to a host computer when a conveyance abnormality is detected during conveyance of the document, and the control unit detects a conveyance abnormality during the conveyance of the document. DetectedTo separate a document in which a conveyance error has occurred without transmitting the abnormality to the host computer at the time and a document already read by the image sensorStops the transfer and transfers the image information already stored in the image memory and the untransferred image information to the host computer up to the detection of the transfer abnormality to the host computer.After that, the abnormality is transmitted to the host computer.An image reading apparatus that is controlled to perform.
  (2) In an image reading apparatus connected to a host computer and transporting a sheet-like document based on an instruction from the host computer and reading an image information portion recorded on the document, the image information recorded on the document An image sensor for reading a part; an image memory for storing image information read by the image sensor; and a control means for controlling to convey a conveyance abnormality to a host computer when a conveyance abnormality is detected during conveyance of the document. The control means stops the conveyance without transmitting the abnormality to the host computer when the conveyance abnormality is detected during the conveyance of the document, and has already been stored in the image memory until the conveyance abnormality is detected. The image information that has been transferred and has not been transferred to the host computer is transferred to the host computer. When the relationship between the transferable amount W from the image memory to the host computer and the transfer amount P instructed from the host computer is W <P, the transfer amount P ′ to the host computer is set to P ′ = The process of calculating from P-W and transferring to the host computer is repeated until the transfer amount P instructed by the host computer runs out, and after transferring the untransferred image information to the host computer, An image reading apparatus.
  (3) In an image reading apparatus that is connected to a host computer and conveys a sheet-like document based on an instruction from the host computer and reads an image information portion recorded on the document, the image information recorded on the document An image sensor for reading a part; an image memory for storing image information read by the image sensor; and a control means for controlling to convey a conveyance abnormality to a host computer when a conveyance abnormality is detected during conveyance of the document. The control means stops the conveyance without transmitting the abnormality to the host computer when the conveyance abnormality is detected during the conveyance of the document, and has already been stored in the image memory until the conveyance abnormality is detected. The image information that has been transferred and has not been transferred to the host computer is transferred to the host computer. When the relationship between the transferable amount W from the image memory to the host computer and the transfer amount P instructed from the host computer is W> P, the transfer amount P instructed from the host computer is sent out. An image reading apparatus which transmits an abnormality to the host computer after transferring the untransferred image information to the host computer.
  (4) The image reading apparatus according to (1), wherein the image memory has a capacity corresponding to a plurality of documents.
  (5) The image reading apparatus according to any one of (1) to (4), further comprising a photographing unit that photographs an image information portion recorded on the original on a film. .
  (6) In an image reading apparatus connected to a host computer and transporting a sheet-like document based on an instruction from the host computer and reading an image information portion recorded on the document, the image information recorded on the document An image sensor for reading a portion; an image memory for storing image information read by the image sensor; a photographing means for photographing an image information portion recorded on the document on a film; and an image information portion for the document. Control means for controlling the image information stored in the image memory to be transmitted to a host computer after shooting is completed, and the control means detects a conveyance error during conveyance of the document. In step (2), the document that has a conveyance error without transmitting the error to the host computer and the image sensor The conveyance is stopped in order to separate it from the read document, and the image information for the image that has been photographed by the photographing means among the image information stored in the image memory is transmitted to the host computer, and then the conveyance abnormality is An image reading apparatus controlled to be transmitted to a host computer.
  (7) An abnormality processing method in an image reading apparatus which is connected to a host computer and conveys a sheet-like document on the basis of an instruction from the host computer and reads an image information portion recorded on the document. An abnormality detection step for detecting a conveyance abnormality during conveyance of the document, and a document in which a conveyance abnormality has occurred without transmitting the abnormality to the host computer at the time when the conveyance abnormality is detected in the abnormality detection step and the image sensor has already read The conveyance of the document is stopped to separate it from the document, and the image information that has already been stored in the image memory and the image information that has not been transferred to the host computer is transferred to the host computer until a conveyance error is detected. An abnormality processing step for transmitting a conveyance abnormality to the host computer. Abnormality processing method in an image reading apparatus according to claim.
  (8) In the abnormality processing method in the image reading device according to (7), the image reading device includes photographing means for photographing the image information portion on a film, and the untransferred image information is stored in a discharged document. An abnormality processing method, wherein the image information is all image information that has not been transferred to the host computer.
  (9) In the abnormality processing method in the image reading device according to (7), the image reading device includes a photographing unit that photographs the image information portion on a film, and the untransferred image information is photographed by the photographing unit. An abnormality processing method in an image reading apparatus, wherein the image information is all image information not transferred to the host computer among the image information for the obtained image.
[0017]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail with reference to examples of sheet-through scanners. The present invention is not limited to the form of the apparatus, and can be implemented in the form of a method supported by the description of the embodiments.
[0018]
Further, the embodiment is an example of reading a reflective original, but the present invention is not limited to this, and can be implemented by reading a transparent original by appropriately changing a reading optical system.
[0019]
【Example】
Example 1
FIG. 1 is a perspective view of a “sheet-through scanner” according to the first embodiment. In FIG. 1, S is a scanner body, 1 is a paper feed roller, 2 is a feed roller, 3 is a transport roller, 4 is a front image reading sensor, 5 is a platen, 6 is a document, 7 is a paper discharge roller, Front surface reflection mirror, 9 is a back image reading sensor, 10 is a paper discharge tray, 11 is a back surface reflection mirror, 12 is a transport roller, 13 is a separation roller, 14 is a front surface image optical path, and 15 is a back surface image optical path. Reference numeral 16 denotes a lens, 17 denotes a film photographing unit, 18 denotes a front side illumination lamp, 19 denotes a front side flat glass, 20 denotes a back side illumination lamp, 21 denotes a back side flat glass, and F denotes a microfilm.
[0020]
In the sheet-through scanner S, when an instruction to start reading is given from an external device such as a host computer (not shown) or an operation panel, the document 6 placed on the document table 5 is drawn by the paper feed roller 1 and sent. When the leading edge of the document 6 reaches the position of the image sensor 4 for the front image or the image sensor 9 for the back image, it is transported by the roller 2, the transport roller 3 and the transport roller 12 and separated from the other document by the separation roller 13. The image is read line by line into an image memory 55 described later. Note that the means for determining arrival at the image sensors 4 and 9 is performed by measuring the time with a timer described later from when the sensor P1 detects the document 6. The original 6 is read by the image sensors 4 and 9, and then the two illumination lamps 18 and 20 simultaneously illuminate the front and back of the original 6 passing through the gap between the flat glasses 19 and 21, and the reflecting mirrors 8 and 11 and the image optical path. 14 and 15, the image of the original is connected to the film photographing unit 17 at the same time, and is reduced by the lens 16 and slit exposed on the film F surface. Note that the means for determining the arrival at the document photographing position is measured by measuring time with a timer described later from when the sensor P2 detects the document 6. The film F is transported and controlled in the direction of the arrow by the film photographing control unit 52. Thereafter, the document 6 passes through the paper discharge roller 7 and is discharged to the paper discharge tray 10.
[0021]
FIG. 2 is a block diagram showing the configuration of the control system of the apparatus of this embodiment. When a scanning instruction is given from the input means 23 or the host 57, the scanning mode is set, and the desired image is the image data for one line from the image sensor 4 for the front image or the image sensor 9 for the back image. The data is written into the line memory 50 through the processing unit 49. The CPU 51 writes the image data for one line written in the line memory 50 in the image memory 55 by designating the writing position. The image data for one line is sent a predetermined number of times (n times) at a predetermined pitch, so that the CPU 51 changes the write position one after another and the image data stored in the image memory 55 is written. Is sent to the host 57 via the sending unit 53.
[0022]
Further, when the film photographing control unit 52 determines that the document 6 has been conveyed to the photographing start position by the time measurement by the timer T from when the document 6 reaches the sensor P2, the flat glass 19, The front and back of the document 6 passing through the gap 21 are simultaneously illuminated, passed through the reflection mirrors 8 and 11 and the image optical paths 14 and 15, and the image of the document is connected to the film photographing unit 17 at the same time. The film F is transported and driven at a speed obtained by decelerating the transport speed 6 according to the reduction ratio of the lens 16, and control is performed so that an image that is slit-exposed on the film surface is formed on the film.
[0023]
3, 4, and 5 are explanatory diagrams showing the write position of the image memory 55. The CPU 51 writes the image data for one line written in the line memory 50 in the image memory 55 by designating the write start position X1. The image data for one line is sent a predetermined number of times (n times) at a predetermined pitch as the document is conveyed, so that the CPU 51 changes the writing position X to the image memory 55 one after another to the image memory 55. Written.
[0024]
The image reading process with the above-described configuration will be described based on the flowchart of FIG. In the sheet-through scanner S of this embodiment, when a reading start instruction is issued from the host 57 or the input unit 23, a document detection sensor (not shown) determines whether or not the document 6 is placed on the document table 5. If the document 6 is placed on the document table 5, the document 6 is drawn by the paper feed roller 1 and conveyed by the feed roller 2, the conveyance roller 3, and the conveyance roller 12, and is separated from other documents by the separation roller 13. When the leading edge of the document reaches the position of the front image sensor 4 or the back image sensor 9 after separation (see S1, the same applies hereinafter), both sides are set based on the image reading surface information set before the start of scanning. Alternatively, one side is determined (S2), and if it is one side, the front or back side is determined (S3), and scanning is started.
[0025]
In the case of the front scan, the image data for one line is written into the line memory 50 from the front image sensor 4 through the image processing unit 49 in the processing device 54 shown in FIG. The CPU 51 writes the image data for one line written in the line memory 50 in the image memory 55 by designating the write start position X1 shown in FIG. The image data for one line is sent a predetermined number of times (n times) at a predetermined pitch as the document is conveyed, so that the CPU 51 changes the writing position to the image memory 55 one after another as shown in FIG. It is written in the image memory 55 (S4). In the case of back scan, image data for one line is written to the line memory 50 through the image processing unit 49 in the processing device 54 from the back image sensor 9. The CPU 51 writes the image data for one line written in the line memory 50 in the image memory 55 by designating the write start position X1 (however, a position different from the surface scan) shown in FIG. The image data for one line is sent a predetermined number of times (n times) at a predetermined pitch as the document is conveyed, so that the CPU 51 changes the writing position X to the image memory 55 one after another as shown in FIG. Is written in the image memory 55 (S6). In the case of duplex scanning, the above-described front surface scanning and back surface scanning are simultaneously performed (S8).
[0026]
Further, when the film photographing control unit 52 determines that the document 6 has been conveyed to the photographing start position by the time measurement by the timer T from the time when the document 6 reaches the sensor P2, in the case of surface photographing, the flat glass 19 is used by the illumination lamp 18. , 21 illuminates the surface of the document 6 passing through the gap, passes through the reflecting mirror 8 and the image optical path 14, connects the image of the document to the film photographing unit 17, is reduced by the lens 16, and the conveyance speed of the document 6 is reduced by the lens 16. Control is performed so that the film F is transported and driven at a speed reduced according to the reduction ratio, and an image subjected to slit exposure on the film surface is formed on the film (S5). In the case of backside shooting, the illumination lamp 20 illuminates the backside of the document 6 that passes through the gap between the flat glasses 19 and 21, passes through the reflecting mirror 11 and the image optical path 15, and connects the image of the document to the film photographing unit 17. The film F is transported and driven at a speed that is reduced, and the transport speed of the document 6 is reduced according to the reduction ratio of the lens 16, and control is performed to form an image that is slit-exposed on the film surface on the film (S7). In the case of double-sided photography, the above-described front side photography and backside photography are performed simultaneously (S9).
[0027]
Although the above description has been made so that the photographing can be controlled separately for the front and back sides, the photographing on the film may be always one side or always both sides, and may not depend on the image reading surface information.
[0028]
When the reading of all the originals stacked on the original platen 5 is completed in such a sequence, this process ends.
[0029]
Next, image information transfer processing to the host 57 will be described based on the flowchart of FIG. In the sheet-through scanner S according to the present embodiment, after a reading start instruction is issued from the host 57 or the input unit 23, an image reading instruction is issued from the host 57. First, a predetermined transfer amount (P) is instructed from the host 57 (S11), the writing position to the image memory 55 already written in accordance with the writing procedure to the image memory 55 described above, and the CPU 51 from the host 57 From the relationship with the read position from the image memory 55 that is transferred to the host 57 via the sending unit 53 according to the instruction,
Transferable amount (W) = Write position-Read position
Is calculated (S12).
[0030]
Next, compared with the transfer amount (P) instructed from the host 57 (S13), when the transferable amount (W) is smaller than the transfer amount instructed from the host 57,
Transfer amount to host 57 (P ′) = transfer amount instructed from host 57 (P) −transferable amount (W)
And the transfer amount (P ′) to the host 57 is once transferred to the host 57 (S14). further,
Transfer amount instructed from host 57 (P) −Transfer amount to host 57 (P ′)
Is calculated, the transfer amount (P) instructed from the host 57 is replaced (S15), and the process is repeated until the transfer amount (P) instructed from the host 57 runs out.
[0031]
On the other hand, when the transferable amount (W) is larger than the transfer amount instructed from the host 57, the transfer amount (P) instructed from the host 57 may be sent to the host 57 (S16).
[0032]
When there is no unsent image data in the image memory 55 in such a sequence (S17), this transfer process ends.
[0033]
Now, as shown in FIG. 4, the image data written to the image memory 55 is written from the head position a1 of the image memory 55 to the image memory 55 one after another while the writing position is changed by the CPU 51 to form the image data A1. To do. At this time, the writing position for the next image is a2. Further, image reading for the next document 6 is started without stopping the scanning operation, and image data A2, A3, A4 are successively written to the image memory 55 as shown in FIG. 5 while changing the writing position a2. At this time, the write start position a2 on the memory is the final image write position.
[0034]
On the other hand, image data already written in the image memory 55 is read from the image memory 55 to the host 57 by the CPU 51 in accordance with an instruction from the host 57 and transferred via the sending unit 53 in the order written in the image memory 55. Can do. That is, as shown in FIG. 5, when data is written up to the current write position a2 of the image memory 55, it is possible to read up to the position a2.
[0035]
Here, when the reading speed from the image memory 55 is slower than the writing speed to the image memory 55 (see FIG. 13), the image memory 55 has a plurality of unsent image data.
[0036]
While the document is being conveyed, the CPU 51 detects whether the document is normally conveyed, the document arrival time from the start of paper feeding until the sensor P1 detects the document 6, and the sensor P1 detects the document 6. The document passage time while the sensor P1 detects the document 6 until the sensor P2 detects the document 6, the document passage time while the sensor P2 detects the document 6, and the sensor P2. The document arrival time from when the document 6 is detected until the sensor P3 detects the document 6 and the document passage time while the sensor P3 is detecting the document 6 are monitored, and some factors occur while the document is being conveyed. If a conveyance failure occurs, the conveyance must be stopped. At this time, image reading is also stopped, but no abnormality is immediately transmitted to the host computer 57.
[0037]
This is because, at this time, if a plurality of image information already stored in the image memory 55 is discarded and an abnormality is immediately transmitted to the host computer 57, the image information of the discharged document 6 is discarded. Therefore, the processing at the time of returning from the conveyance failure becomes troublesome, and the same image information photographed on the film F is not transmitted to the host computer 57, and the image information managed by the host computer 57 and the film F There will be a difference between the upper image information.
[0038]
Therefore, in this state, when conveyance failure or the like occurs during conveyance of the document 6 and conveyance and image reading are stopped, the image writing position a2 points to the final image, so the host computer 57 is immediately notified. Abnormality is not transmitted, and the image transfer is normally performed according to the flowchart shown in FIG. 7, and a plurality of pieces of image information already stored in the image memory 55 are transferred to the host computer 57. Thereafter, the abnormality is transmitted to the host computer 57.
[0039]
As described above, according to the present embodiment, even if a conveyance failure or the like occurs during conveyance, a plurality of pieces of image information already stored in the image memory are transferred to the host computer, thereby discharging paper. Since it can be determined that the image reading by the image sensor has been completed, it is not necessary to re-feed the discharged document 6 and read the image when returning from a conveyance failure or the like. Since it is only necessary to perform re-reading from a document in which a conveyance failure has occurred, it is possible to increase the efficiency of image reading.
[0040]
Further, when a microfilm photographing device is provided as in this embodiment, it is possible to determine that the discharged document 6 has been read by the image sensor and film photographing has been completed. At the time of returning from the above, it is not necessary to re-feed the discharged original 6 and read the image, and it is only necessary to read again from the original having the conveyance failure. Can do.
[0041]
In addition, after re-reading, consistency is achieved between image information managed by the host computer and image information on the film, and the image on the microfilm becomes a backup of the image transferred to the host computer. Therefore, even if the image information stored in the host computer is destroyed due to the system destruction of the host computer or the like, the image information photographed on the paired microfilm exists at an accurate position, and the desired information is obtained from the microfilm. Images can be searched easily.
[0042]
(Example 2)
Next, a “sheet-through scanner” which is Embodiment 2 will be described. Since the hardware configuration of the present embodiment is the same as that of the first embodiment and the image information transfer process to the host is the same as that of the first embodiment, description will be made with reference to FIGS. 1 and 7 of the first embodiment. The operation of this embodiment will be described based on the configuration of FIG. 1 and the flowcharts of FIGS.
[0043]
When the same image information as the image information that has been read is taken on the microfilm F, in this embodiment, in the configuration of FIG. 1, first, image reading is started by the image sensor 4 or 9, and then film shooting is performed. Is supposed to start. That is, when a conveyance failure or the like occurs during conveyance of the document 6 and the conveyance and image reading are stopped, a conveyance failure occurs between the image reading position by the image sensor and the film photographing position. If all of the image information has been transmitted, the image information transmitted to the host computer 57 is not captured on the film F, and the difference between the image information managed by the host computer 57 and the image information on the film F is not detected. Will occur.
[0044]
Therefore, in the sheet-through scanner S of the present embodiment, an instruction to start reading is issued from the host 57 or an input unit (not shown), and then an image reading instruction is issued from the host 57. First, a predetermined transfer amount (P) is instructed from the host 57 (S11), and the transferable amount is calculated. Here, as shown in the flowchart of FIG. 8, the transfer to the image memory 55 described in the first embodiment is performed. The writing position b2 to the image memory 55 already written along the writing procedure and the position b1 before starting writing are stored (S21, S22, FIG. 9). Here, it is determined whether the image data stored in the image memory 55 has already been filmed, after the document 6 passes the sensor P2 and is measured for a predetermined time by the timer T, or the sensor P3 is set. Judgment is made when the document 6 has passed (S23). If film shooting has not ended, the writing position b is set to b1 (S24). If film shooting has ended, the writing position b is set to b2. (S25). From the relationship between the write position b determined in this way and the read position from the image memory 55 transferred by the CPU 51 to the host 57 via the sending unit 53 in accordance with an instruction from the host 57,
Transferable amount (W) = Write position (b)-Read position
Is calculated (S12).
[0045]
Next, compared with the transfer amount (P) instructed from the host 57 (S13), when the transferable amount (W) is smaller than the transfer amount instructed from the host 57,
Transfer amount to host 57 (P ′) = Transfer amount instructed by host 57 (P) −Transferable amount (W)
And the transfer amount (P ′) to the host 57 is once transferred to the host 57 (S14). further,
Transfer amount instructed from host 57 (P) −Transfer amount to host 57 (P ′)
Is calculated, the transfer amount (P) instructed from the host 57 is replaced (S15), and the process is repeated until the transfer amount (P) instructed from the host 57 runs out.
[0046]
On the other hand, when the transferable amount (W) is larger than the transfer amount instructed from the host 57, the transfer amount (P) instructed from the host 57 may be sent to the host 57 (S16).
[0047]
When there is no unsent image data in the image memory 55 in such a sequence (S17), this process ends.
[0048]
That is, when the same image as the image information that has been read by the image sensor is shot on the microfilm F, the information on the same image that has been read after the shooting on the microfilm F is completed. To communicate.
[0049]
Further, if a conveyance failure or the like occurs during the conveyance of the document 6, the conveyance and the image reading are stopped, and the image reading is stopped. The stored image information is not transmitted to the host computer 57, and the transfer abnormality is transmitted to the host computer after all the image information corresponding to the image photographed on the microfilm F has been transferred to the host computer.
[0050]
In this embodiment, whether or not film shooting has ended is determined after the document 6 passes the sensor P2 and is measured by the timer T for a predetermined time, or when the document 6 passes the sensor P3. The mark 6 may be measured by the time measurement by the timer T after the document 6 passes the sensor P1, or the motor pulse measurement after the document 6 passes the sensor P1 or P2, and is exposed along with the image. (Blip) The photographing may be determined to be finished when the photographing is finished.
[0051]
As described above, according to the present embodiment, when the original 6 is conveyed, a conveyance failure or the like occurs, the conveyance and the image reading are stopped, and the image reading is stopped. If not, the image information already stored in the image memory 55 is not transmitted to the host computer 57, and all the image information corresponding to the image photographed on the microfilm F is transferred to the host computer. Since the conveyance abnormality is transmitted to the host computer, there is no difference between the image information managed by the host computer 57 and the image information on the film F.
[0052]
Therefore, even if the image information transferred and managed to the host computer disappears for some reason, it can be easily backed up with the film that has been taken.
[0053]
Therefore, even if the image information stored in the host computer is destroyed due to the system destruction of the host computer or the like, the image information photographed on the paired microfilm exists at an accurate position, and the desired information is obtained from the microfilm. Images can be searched easily.
[0054]
In each of the embodiments described above, first, image reading is started by the image sensor 4 or 9, and then film shooting is started. However, film shooting may be performed prior to image reading. Alternatively, film photographing may be performed simultaneously with image reading.
[0055]
【The invention's effect】
As described above, according to the present invention, it is not necessary to re-feed the discharged document after the recovery from the document conveyance failure such as a paper jam or the like, and to read the image. In addition, even if image information transferred to the host computer and managed is lost for some reason, it can be easily backed up with film that has already been shot.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view showing a configuration of Example 1
FIG. 2 is a block diagram illustrating a configuration of an operation system according to the first embodiment.
FIG. 3 is an explanatory diagram of writing to an image memory according to the first embodiment.
FIG. 4 is an explanatory diagram of writing to the image memory according to the first embodiment.
FIG. 5 is an explanatory diagram of writing to the image memory according to the first embodiment.
FIG. 6 is a flowchart showing image reading and photographing processing in the first embodiment.
FIG. 7 is a flowchart illustrating image information transfer processing to the host according to the first exemplary embodiment.
FIG. 8 is a flowchart showing processing for determining a write position in the image memory in the second embodiment.
FIG. 9 is an explanatory diagram of writing to the image memory according to the second embodiment.
FIG. 10 is a cross-sectional view showing the configuration of a related art example
FIG. 11 is a block diagram showing a configuration of a related art example.
FIG. 12 is an explanatory diagram of writing to an image memory in a related technical example
FIG. 13 is a diagram showing timing of image reading and film shooting in a related art example.
FIG. 14 is a diagram showing timing of image reading and film shooting in a related art example.
[Explanation of symbols]
4,9 Image sensor
6 Manuscript
51 CPU
57 Host computer

Claims (9)

In an image reading apparatus that is connected to a host computer and conveys a sheet-like document based on an instruction from the host computer and reads an image information portion recorded on the document,
An image sensor for reading an image information portion recorded on the original;
An image memory for storing image information read by the image sensor;
Control means for controlling the conveyance abnormality to be transmitted to the host computer when a conveyance abnormality is detected during conveyance of the document;
With
The control means conveys in order to separate a document in which a conveyance abnormality has occurred and a document already read by the image sensor without conveying the abnormality to the host computer when a conveyance abnormality is detected during conveyance of the document. Stop and transfer the image information that has already been stored in the image memory by the time of detection of the conveyance abnormality and the image information that has not been transferred to the host computer to the host computer, and then transmit the abnormality to the host computer. An image reading apparatus controlled as described above. In an image reading apparatus that is connected to a host computer and conveys a sheet-like document based on an instruction from the host computer and reads an image information portion recorded on the document,
An image sensor for reading an image information portion recorded on the original;
An image memory for storing image information read by the image sensor;
Control means for controlling the conveyance abnormality to be transmitted to the host computer when a conveyance abnormality is detected during conveyance of the document;
With
The control means stops the conveyance without transmitting the abnormality to the host computer when the conveyance abnormality is detected during the conveyance of the document, and the image already stored in the image memory until the conveyance abnormality is detected. When transferring image information not yet transferred to the host computer to the host computer, there is a relationship between the transferable amount W from the image memory to the host computer and the transfer amount P instructed by the host computer. for W <P, repeatedly the processing of transferring the transfer amount P'to the host computer P'= calculated from P-W in the host computer to said transfer amount P instructed from the host computer eliminated , this transmitting an abnormal image information of the non-transferred to the host computer after transferred to the host computer An image reading apparatus characterized by the above. In an image reading apparatus that is connected to a host computer and conveys a sheet-like document based on an instruction from the host computer and reads an image information portion recorded on the document,
An image sensor for reading an image information portion recorded on the original;
An image memory for storing image information read by the image sensor;
Control means for controlling the conveyance abnormality to be transmitted to the host computer when a conveyance abnormality is detected during conveyance of the document;
With
The control means stops the conveyance without transmitting the abnormality to the host computer when the conveyance abnormality is detected during the conveyance of the document, and the image already stored in the image memory until the conveyance abnormality is detected. When transferring image information not yet transferred to the host computer to the host computer, there is a relationship between the transferable amount W from the image memory to the host computer and the transfer amount P instructed by the host computer. In the case of W> P, the transfer amount P instructed from the host computer is sent out, the untransferred image information is transferred to the host computer, and then an abnormality is transmitted to the host computer. apparatus. The image reading apparatus according to claim 1.
The image reading apparatus, wherein the image memory has a capacity corresponding to a plurality of documents. The image reading apparatus according to any one of claims 1 to 4 ,
An image reading apparatus, comprising: a photographing means for photographing an image information portion recorded on the original on a film. In an image reading apparatus that is connected to a host computer and conveys a sheet-like document based on an instruction from the host computer and reads an image information portion recorded on the document,
An image sensor for reading an image information portion recorded on the original;
An image memory for storing image information read by the image sensor;
Photographing means for photographing the image information portion recorded on the original on a film;
Control means for controlling the image information stored in the image memory to be transmitted to a host computer after the image information portion of the original is photographed by the photographing means;
Equipped with a,
The control means conveys in order to separate a document in which a conveyance abnormality has occurred and a document already read by the image sensor without conveying the abnormality to the host computer when a conveyance abnormality is detected during conveyance of the document. Stop and transmit image information for an image that has been captured by the imaging means out of the image information stored in the image memory to the host computer, and then control the conveyance abnormality to be transmitted to the host computer. An image reading apparatus. An abnormality processing method in an image reading apparatus that is connected to a host computer and conveys a sheet-like document based on an instruction from the host computer and reads an image information portion recorded on the document,
An abnormality detection step of detecting a conveyance abnormality during conveyance of the original;
When the abnormality detection step detects a conveyance abnormality, the conveyance of the document is stopped in order to separate the document in which the conveyance abnormality has occurred without transmitting the abnormality to the host computer and the document already read by the image sensor , Abnormality in which image information that has already been stored in the image memory by the time of detection of conveyance abnormality and image information that has not been transferred to the host computer is transferred to the host computer, and conveyance abnormality is transmitted to the host computer Processing steps;
An abnormality processing method in an image reading apparatus, comprising: The abnormality processing method in the image reading device according to claim 7 ,
The image reading device comprises a photographing means for photographing the image information portion on a film,
The abnormality processing method, wherein the untransferred image information is all image information that has not been transferred to the host computer among the image information of the discharged document. The abnormality processing method in the image reading device according to claim 7 ,
The image reading device comprises a photographing means for photographing the image information portion on a film,
The abnormality processing method in an image reading apparatus, wherein the untransferred image information is all image information that has not been transferred to the host computer among image information of an image captured by the photographing means.

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