JP2011146834A - Optical reading device, and control method and control program for the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To improve convenience by reducing a waiting time for transferring a read image read by an optical reading device to another device to increase the speed of a reading process. <P>SOLUTION: A dot impact printer 10 includes a medium transport mechanism 100 for transporting a medium as a reading object, and this optical reading device 110 arranged in a medium transport path P for optically reading the medium to be transported, wherein one or more regions set in a reading range are read by the optical reading device 110, the read images are stored in a storage section and, when reading of at least one of the regions is ended, the read images stored in the storage section are transmitted to another device even before reading of the other regions is ended. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to an optical reading apparatus that conveys a medium and optically reads the surface of the medium, a control method for the optical reading apparatus, and a program.

  In general, an optical reading device such as a scanner device connected to a host computer stores an image obtained by reading a document in a buffer memory, and sends the image stored in the buffer memory to the host computer after the reading of the document is completed. (For example, refer to Patent Document 1).

JP 2009-284191 A

By the way, with higher performance of the optical reading apparatus, reading is performed at a higher reading resolution, and it is not uncommon to perform color reading. For this reason, the volume of data sent from the optical reader to the host computer has increased significantly compared to before, and there has been a problem that it takes time to transfer this data. In particular, in recent years, image sensors and the like that perform reading have become more sophisticated, and while the time required for the reading operation itself has been shortened, the time required for data transfer has increased, so there is a waiting time until the transfer is completed. There was a thing.
Accordingly, an object of the present invention has been made in view of the above-described circumstances, shortening the waiting time for transferring an image read by the optical reading device to another device, speeding up the reading process, and convenience. It is to improve.

In order to achieve the above object, the present invention provides a transport unit that transports a medium to be read, an optical reading unit that is provided in a transport path of the medium and optically reads the medium transported by the transport unit, A storage unit that stores a read image read by the optical reading unit; a control unit that controls a reading operation of the optical reading unit; and that reads a read image stored in the storage unit and transmits the read image to another device; The control unit causes the optical reading unit to read one or a plurality of regions set within the reading range of the optical reading unit, and when the reading of at least one of the regions ends, the other Even before the reading of the area is completed, the read image of the area that has been read is read from the storage unit and transmitted to the other device.
According to the present invention, a read image is optically read from a region set as a reading range, and when at least one of the regions is read, there may be other regions that have not been read. Since the read image of the area where the reading has been completed is transmitted to another device, the waiting time for transmission of the read image is reduced without waiting for transmission until the reading of all the areas is completed, thereby increasing the speed. And improvement in convenience can be achieved. In particular, when the read image has a large data capacity, such as when the reading resolution is high or when color reading is performed, the waiting time can be significantly reduced. Further, even if the storage capacity of the storage unit that stores the read image is small, reading can be performed without any problem.

In the optical reading device according to the aspect of the invention, the optical reading unit may transport the first reading unit that reads one surface of the medium and the second reading unit that reads the other surface of the medium. Arranged on both sides of the path, and the control unit reads at least one region set in at least one of the reading ranges of the first and second reading units, and at least one of them When the reading of the area is completed, the reading can be performed even before the reading of the other area set in the same reading range as the area or another reading area set in the other reading range is completed. A read image of the completed region is read from the storage unit and transmitted to the other device.
According to the present invention, both sides of a medium can be read by the first and second reading units, and when one reading unit finishes reading one area, the reading unit or the other reading unit Even if there is an area where scanning has not been completed, the scanned image of the area where scanning has been completed is transmitted to another connected device such as a computer. For this reason, when both sides of the medium are read, the waiting time for transmission of the read image can be shortened to increase the speed, and convenience can be improved. Furthermore, since it is not necessary to store both-side read images in the storage unit, both-side reading can be performed without any problem even if the storage capacity of the storage unit is small.

Further, the present invention is the above optical reader, wherein the control unit divides each area set in the reading range by a predetermined length in the conveyance direction of the medium to set a small area. When reading of at least one of the small areas is completed by the optical reading unit, a read image of the small area that has been read is read from the storage unit and transmitted to the other device. To do.
According to the present invention, the area to be read is divided into small areas, and when reading of at least one of the small areas is completed, the read image is read from the storage unit and transmitted to another apparatus. For this reason, even when the area to be read is large and it takes a long time to read the entire area, the waiting time for transmission of the read image can be greatly reduced, and there is no problem even if the storage capacity of the storage unit is small. Can read.

Further, according to the present invention, in the optical reading apparatus, the control unit stores identification information for identifying the region set in the reading range in the storage unit in association with each region. The read image of the small area is transmitted to the other apparatus in a form to which the identification information of the original area to which the small area belongs is added.
According to the present invention, when an area to be read is divided into small areas and a read image is transmitted for each small area, the identification information indicating the area to which the small area belongs is added and transmitted. Another device that has received the image can easily assemble the original region image from the small region image.

Further, the present invention is characterized in that, in the above-described optical reading apparatus, the control unit sets each portion obtained by dividing the reading range into a plurality of areas.
According to the present invention, the reading range is divided into a plurality of portions, and each of the plurality of portions is set as an area to be read. To the device. For this reason, when the entire reading range is read, the waiting time for transmission of the read image can be shortened, the convenience can be improved, and the reading can be performed without any trouble even if the storage capacity of the storage unit is small. In addition, when the entire reading range is designated as the reading target, even if there is no operation or instruction to set the reading target area, it is automatically divided to reduce the waiting time for further convenience. Can be improved.

Further, the present invention is such that, in the above-described optical reading apparatus, the control unit can selectively execute either whole reading for reading the entire reading range or partial reading for reading a part of the reading range. When the entire reading is performed, each section obtained by dividing the reading range into a plurality of parts is set as the area to be read, and when partial reading is performed, one or a plurality of reading objects are included in the reading range. The area is set, and the set area is sequentially read by the optical reading unit. When the reading of at least one of the areas is completed, the reading is performed even before the reading of the other areas is completed. When the read image of the area that has been read is read from the storage unit and transmitted to the other apparatus and partial reading is performed, the length of any of the areas in the conveyance direction of the medium is If it is equal to or longer than a certain length, the area is divided into predetermined lengths to set small areas, and when reading of at least one of the small areas is completed by the optical reading unit, the reading is completed. A small area read image is read from the storage unit and transmitted to the other device.
According to the present invention, it is possible to effectively shorten the waiting time related to transmission of a read image and improve convenience in both cases of reading the entire reading range and reading a part of the reading range. Can do.

In order to solve the above problems, the present invention provides a transport unit that transports a medium to be read, and an optical reader that is provided in a transport path of the medium and optically reads the medium transported by the transport unit. And reading one or a plurality of areas set within a reading range of the optical reading unit by the optical reading unit, and reading an image read by the optical reading unit. When the reading of at least one of the areas is completed, the read image of the area that has been read is read from the storage section even before the reading of the other areas is completed. And transmitting to the other device.
By executing the control method of the present invention, an area set as a reading range is optically read to store a read image, and when reading of at least one of the areas is completed, no other reading is completed. Even if there is an area, the scanned image of the area where scanning has been completed is sent to another device, so there is no need to wait for transmission until all areas have been scanned, and the waiting time for transmission of the scanned image is reduced. Therefore, the speed can be increased and the convenience can be improved. In particular, when the read image has a large data capacity, such as when the reading resolution is high or when color reading is performed, the waiting time can be significantly reduced. Further, even if the storage capacity of the storage unit that stores the read image is small, reading can be performed without any problem.

In order to solve the above problems, the present invention provides a transport unit that transports a medium to be read, and an optical reader that is provided in a transport path of the medium and optically reads the medium transported by the transport unit. And a program that can be executed by a control unit that controls the optical reading device, wherein one or a plurality of areas set by the control unit within a reading range of the optical reading unit are read by the optical reading unit. And reading the image read by the optical reading unit in the storage unit. When reading of at least one of the regions is completed, the reading can be performed even before reading of the other region is completed. A read image of the completed region is read from the storage unit and transmitted to the other device.
By executing the program of the present invention, the area set as the reading range is optically read to store the read image, and when reading of at least one of the areas is completed, the other reading is not completed Even if there is, the scanned image of the area where scanning has been completed is sent to another device, so there is no need to wait until the scanning of all areas has been completed, and the waiting time for transmission of the scanned image can be reduced. Therefore, the speed can be increased and the convenience can be improved. In particular, when the read image has a large data capacity, such as when the reading resolution is high or when color reading is performed, the waiting time can be significantly reduced. Further, even if the storage capacity of the storage unit that stores the read image is small, reading can be performed without any problem.

  According to the present invention, it is possible to shorten the waiting time related to transmission of a read image without waiting for transmission to another apparatus until reading of all areas is completed, thereby improving convenience. Can do.

1 is an external perspective view of a dot impact printer in an embodiment. FIG. 2 is a perspective view showing a printer body. FIG. 3 is a side sectional view of the printer body. It is a block diagram which shows the functional structure of a dot impact printer. It is a figure which shows an example of the medium used as reading object. It is a figure explaining reading operation using an optical reading device. It is a figure explaining reading operation using an optical reading device. It is a flowchart which shows operation | movement of a dot impact printer. It is a flowchart which shows operation | movement of a dot impact printer.

Embodiments of the present invention will be described below with reference to the drawings.
FIG. 1 is a front perspective view showing an appearance of a dot impact printer according to the present embodiment. FIG. 2 is an external perspective view showing the printer main body 11. FIG. 3 is a side sectional view showing the dot impact printer 10 of FIG.
The dot impact printer 10 shown in FIG. 1 presses a plurality of recording wires provided in the recording head 18 (see FIG. 3) against the recording medium S via an ink ribbon (not shown) fed out from a ribbon cartridge (not shown). By forming dots on the recording surface of the recording medium S, an image including characters is recorded. The dot impact printer 10 includes an optical reading device 110 (see FIG. 3), functions as an optical reading device, and can optically read characters, symbols, images, and the like displayed on the surface of the recording medium S.

Examples of the recording medium S (medium) that can be used in the dot impact printer 10 include a cut medium cut to a predetermined length and a continuous sheet in which a plurality of sheets are connected. Examples of the cut medium include cut paper, cut copy paper, and the like, as well as passbooks, postcards, envelopes, etc. The continuous paper includes continuous copy paper and fanfold paper connected by perforations. In this embodiment, a check or bill issued by a financial institution or the like (hereinafter collectively referred to as a check) or a passbook issued by a financial institution or the like is used as the recording medium S. A check is a single-cut sheet in which MICR (Magnetic Ink Character Recognition) information such as a user's account number and a serial number of the check is printed on a partial area MA of the surface by magnetic ink. The passbook is in the form of a booklet in which a plurality of recording papers are bound, and the inner side of the booklet is the recording surface. A magnetic stripe is provided at the rear of the surface corresponding to the back cover of the passbook.
In the following description, of the four sides of the rectangular recording medium S, the side that is inserted toward the dot impact printer 10 is the leading end, and the side that faces the leading end is the trailing end.

As shown in FIG. 1, the dot impact printer 10 includes an upper cover 12, an upper case 13, and a lower case 14 as exterior bodies, and a recording medium S is inserted and discharged on the front surfaces of the upper case 13 and the lower case 14. A manual feed opening 15 is opened. On the other hand, a discharge port 20 for discharging the recording medium S is opened on the back surface of the upper case 13 and the lower case 14. Whether the recording medium S processed by the dot impact printer 10 is discharged from the manual feed port 15 or the discharge port 20 is set by a command transmitted to the dot impact printer 10 from the host computer 200 described later. it can. The side where the manual feed port 15 is opened, that is, the left side in FIG. 3 is the front (front) side, and the side where the discharge port 20 is opened, ie, the right side in FIG. 3 is the rear (rear) side.
As shown in FIG. 2, the dot impact printer 10 includes a printer main body 11 covered with the above-described exterior body. The printer main body 11 includes a lower main body portion 11A and an upper main body portion (not shown) supported by a shaft 11C at the rear end portion of the lower main body portion 11A. The upper main body can be rotated by operating an open / close lever (not shown) installed on the left side surface of the upper main body. When the upper main body is rotated, the inside of the printer main body 11 is exposed.

As shown in FIGS. 2 and 3, the printer main body 11 includes a base frame 16 and a pair of right side frame 17 </ b> A and left side frame 17 </ b> B fixed to both ends of the base frame 16. Outside the both side frames 17A and 17B, there are both side frames (not shown) of the upper main body, and a carriage guide shaft 31 is bridged between them, and a flat surface shape front is formed between the side frames 17A and 17B. A medium guide 24 and a rear medium guide 25 are fixedly provided. A planar platen 21 is disposed between the front medium guide 24 and the rear medium guide 25, and the recording head 18 is disposed above the platen 21 so as to face the platen 21.
The recording head 18 is mounted on a carriage 19 that is slidably inserted into the carriage guide shaft 31. The carriage 19 is driven via a timing belt (not shown) by a forward or reverse rotation of a carriage drive motor 56 (FIG. 4) that drives the carriage 19, and is guided and reciprocated by a carriage guide shaft 31. The carriage 19 is reciprocally scanned between the upper main body side frames in the direction indicated by the symbol X in FIG. 1, that is, in the main scanning direction that coincides with the axial direction of the carriage guide shaft 31 and the longitudinal direction of the platen 21. Note that a direction orthogonal to the main scanning direction X of the carriage 19, that is, a direction indicated by a symbol Y in FIG.

  While the recording head 18 mounted on the carriage 19 travels with the carriage 19, the recording wire is projected from a wire projecting portion (not shown) facing the platen 21 at the front end surface of the recording head 18 and hits the ink ribbon. The ink of the ink ribbon is attached to the recording medium S conveyed between the recording head 21 and the recording head 18 to record an image including characters on the recording medium S. The ink ribbon is folded and stored in a ribbon cartridge (not shown) mounted on the main body frame or the carriage 19 and is fed out as the carriage 19 is scanned. Further, as shown in FIG. 3, a medium width sensor 55 is disposed on the rear side of the recording head 18 so as to be positioned above the platen 21. The medium width sensor 55 is mounted on the carriage 19 and scanned on the platen 21 together with the carriage 19, and is used to obtain the position of the side edge of the recording medium S and the width of the recording medium S.

  2 and 3, the platen 21 extends in the traveling direction of the carriage 19 and is formed in a planar shape. The platen 21 is urged toward the recording head 18 by an urging spring 180 and is elastically supported. Yes. The urging spring 180 is a compression coil spring, and the urging force of the urging spring 180 supports the output of the recording wire during the recording operation of the recording head 18. Further, the platen 21 is provided with the biasing spring 180 when the thickness of the recording medium S changes during conveyance of the recording medium S or when the recording medium S having a different thickness is loaded into the printer main body 11. The head is pressed by the tip of the recording head 18 against the force and moves away from the recording head 18. Thus, a constant gap is ensured between the tip of the recording head 18 and the recording surface of the recording medium S regardless of the thickness of the recording medium.

  As shown in FIG. 3, the printer main body 11 has a medium conveying mechanism (conveying unit) 100 that conveys the recording medium S and the leading end of the recording medium S that is conveyed by the medium conveying mechanism 100 abutted against the recording medium. An alignment mechanism 28 for aligning S; and a magnetic data reading unit 29 including a magnetic head 34 for reading MICR information provided on a check and reading or writing magnetic information on a magnetic stripe provided on a passbook; The magnetic head 34 of the magnetic data reading unit 29 has a medium pressing unit 30 that presses the recording medium S from above in order to suppress the floating of the recording medium S when performing magnetic information processing including reading of MICR information. is doing.

As shown in FIGS. 2 and 3, the medium transport mechanism 100 includes a platen 21, a first driving roller 22A, a first driven roller 22B, a second driving roller 23A, a second driven roller 23B, a third driving roller 124A, 3 a driven roller 124B, a front medium guide 24, a rear medium guide 25, a medium transport motor 26, and a drive wheel train 27. The medium transport mechanism 100 configures a transport path P that transports the recording medium S via each roller on the front medium guide 24 and the rear medium guide 25, and the upper surfaces of the front medium guide 24 and the rear medium guide 25 are transport paths. This is the P transport surface PA.
In this configuration, the first drive roller 22A and the first driven roller 22B are arranged on the front side of the printer body 11 with respect to the platen 21 and the recording head 18, and the second drive roller 23A, the second driven roller 23B, and the third The driving roller 124 </ b> A and the third driven roller 124 </ b> B are sequentially arranged on the rear side of the printer main body 11 with respect to the platen 21 and the recording head 18.

The first driving roller 22A and the first driven roller 22B are arranged in a vertical direction to make a pair, and the second driving roller 23A and the second driven roller 23B are arranged in a vertical direction to make a pair, a third The driving roller 124A and the third driven roller 124B are arranged in the vertical direction to make a pair.
The first driving roller 22A, the second driving roller 23A, and the third driving roller 124A are driving rollers that are rotationally driven by the medium transport motor 26 and the driving wheel train 27, and are a first driven roller 22B and a second driven roller 23B. And the third driven roller 124B are respectively driven by the springs 42A, 42B, and 42C with a predetermined pressing force toward the first drive roller 22A, the second drive roller 23A, and the third drive roller 124A. It is. Accordingly, the first driving roller 22A and the first driven roller 22B are rotationally driven in opposite directions, the second driving roller 23A and the second driven roller 23B are rotationally driven in opposite directions, and the third driving roller 124A. And the third driven roller 124B are rotationally driven in directions opposite to each other.

  As shown in FIG. 2, the drive wheel train 27 is disposed outside the right side frame 17A. The drive wheel train 27 includes a motor pinion 51 that is rotatably and integrally fixed to a drive shaft of a medium transport motor 26 that can rotate forward or reverse. The driving force from the motor pinion 51 is transmitted to the second driving gear 53B attached to the second roller shaft 33 of the second driving roller 23A via the reduction gear 52, and further from the second driving gear 53B to the middle. It is transmitted to the first drive gear 53A attached to the first roller shaft 32 of the first drive roller 22A via the gear 54. Further, the rotational force of the second roller shaft 33 of the second drive roller 23A is transmitted to the third roller shaft 134 of the third drive roller 124A by, for example, a drive belt (not shown). Accordingly, the first drive roller 22A, the second drive roller 23A, and the third drive roller 124A shown in FIG. 3 rotate in the same direction, and the recording medium S can be conveyed into the printer main body 11. In other words, the first drive roller 22A, the second drive roller 23A, and the third drive roller 124A shown in FIG. 3 are denoted by reference sign A in the drawing along the sub-scanning direction when the medium transport motor 26 is rotating forward. When the recording medium S is transported into the printer main body 11 and the medium transport motor 26 is reversely rotated, the recording medium S is transported in the direction of discharging from the printer main body 11 as indicated by reference numeral B in the figure. To do.

  The alignment mechanism 28 aligns the recording medium S before recording on the recording medium S by the recording head 18 or reading the surface of the recording medium S by the optical reading device 110. The alignment mechanism 28 is provided between the first driving roller 22A and the first driven roller 22B, the recording head 18 and the platen 21 in the main scanning direction, and a plurality of alignment plates 38 protruding into the conveyance path P. An alignment motor 58 (FIG. 4) for driving the alignment plate 38 is provided, and the recording medium S can be aligned and aligned by abutting the leading end portion of the recording medium S against the alignment plate 38.

As shown in FIG. 2, the printer main body 11 includes a plurality of alignment sensors 39 that detect the presence or absence of the recording medium S abutted against the alignment plates 38 in the vicinity of the upstream side of the alignment plates 38 in the conveyance path P. The alignment sensor 39 is a light transmission type sensor that includes a light emitting unit (such as an LED) and a light receiving unit (such as a phototransistor) that face each other across the transport path P, and is aligned in the main scanning direction. Based on the number and arrangement of the sensors that detect the leading edge of the recording medium S among the plurality of alignment sensors 39, it is possible to determine whether the inclination of the recording medium S after the alignment by the alignment mechanism 28 with respect to the transport direction is within an allowable range.
Further, the dot impact printer 10 includes the drive control of the medium transport motor 26, the traveling control of the carriage 19, the control of the recording operation by the recording wire of the recording head 18, the control of the reading operation of the optical reader 110, etc. As a control unit for controlling the whole, for example, a control board unit (not shown) is provided below the rear side of the printer main body 11.

  In the printer main body 11, a plurality of medium edge sensors 47 that detect insertion of the recording medium S into the conveyance path P are arranged in parallel on the front side of the first drive roller 22 </ b> A. These medium edge sensors 47 are light reflecting sensors each having a light emitting unit that emits light toward the conveyance path P and a light receiving unit that detects the reflected light, and the recording medium S inserted from the manual feed port 15. Is detected. The medium edge sensor 47 may be a light transmission type sensor in which a light emitting unit and a light receiving unit are arranged so as to face each other with the conveyance path P interposed therebetween. In this configuration, the recording medium S is inserted into the conveyance path P when the light receiving portions of all the medium edge sensors 47 are blocked by any one of the medium edge sensors 47 from the received light state. To be judged.

Further, as shown in FIG. 3, the printer main body 11 includes an optical reading device 110 (optical reading unit) that reads characters, symbols, images, or the like displayed on the surface of the recording medium S. The optical reading device 110 is disposed opposite to a first scanner (first reading unit) 111 that reads information displayed on the upper surface side of the recording medium S by printing or the like, and the recording medium S. And a second scanner (second reading unit) 112 that reads information displayed by printing or the like. Usually, the recording medium S is inserted from the manual feed slot 15 so that the surface on which the MICR information is printed is the lower surface.
The first scanner 111 and the second scanner 112 are optical image sensors that are arranged between the second drive roller 23A and the third drive roller 124A, and continuously read information on the recording medium S being conveyed on the conveyance path P. is there.

  The first scanner 111 and the second scanner 112 are, for example, CIS (Contact Image Sensor) type image reading sensors, and hold flat cover glasses 140 and 150 that are in close contact with the recording medium S, and these cover glasses 140 and 150. Main body cases 141 and 151 respectively. Inside the main body cases 141 and 151, an irradiation unit (not shown) for irradiating light output from a light source such as an LED to the reading area of the recording medium S, and a line in the main scanning direction (X direction). A plurality of light receiving sensors (not shown) arranged and an output part (not shown) for outputting a signal from the light receiving sensor to the control board part are accommodated. In the present embodiment, the first scanner 111 and the second scanner 112 are not limited to those having a CIS, but may be those having a CCD (Charge Coupled Device). In addition, as shown in FIG. 2, the second scanner 112 includes a main body case 151 and a cover glass 150 that extend in the width direction of the dot impact printer 10 substantially in parallel with the platen 21 and are configured in a longitudinal shape. The main body case 151 is disposed so that the upper surface (glass surface) of the cover glass 150 is exposed to the transport path P through an opening formed in the rear medium guide 25. As shown in FIG. 3, the first scanner 111 is provided above the second scanner 112 so that the lower surface (glass surface) of the cover glass 140 faces the upper surface of the cover glass 150. The two scanners 112 are formed in a longitudinal shape substantially the same length.

  A biasing member 113 is provided above the first scanner 111, and the first scanner 111 is biased by the biasing member 113 so as to be close to the recording medium S of the rear medium guide 25. Further, the urging member 113 presses the first scanner 111 against the second scanner 112 side with a substantially uniform force in the width direction. Here, as the urging member 113, a coil spring, a leaf spring, an elastomer cushion member, or the like can be used. Between the glass surfaces of the cover glasses 140 and 150, an interval is provided so that a recording medium having a predetermined thickness can enter. When the recording medium S is read, the first scanner 111 is read by the conveyed recording medium S. Is pushed upward and the biasing member 113 is contracted, so that the recording medium S can pass between the cover glasses 140 and 150. That is, in the optical reading device 110, the recording medium S and the glass surfaces of the cover glasses 140 and 150 are pressed by pressing the recording medium S against the second scanner 112 side by the first scanner 111 urged by the urging member 113. It is firmly attached to improve reading quality.

The light receiving sensors (not shown) of the first scanner 111 and the second scanner 112 are arranged in a line in the main scanning direction of the dot impact printer 10 and read in a line extending in the main scanning direction. The light receiving sensors of the first scanner 111 and the second scanner 112 are arranged in a wider range than the printable range of the recording head 18 in the main scanning direction, and are larger than all the recording media that the dot impact printer 10 can print. Reading is possible with a wide width. That is, the optical reading device 110 can read the entire surface of all the recording media S used in the dot impact printer 10.
As shown in FIG. 3, the first scanner 111 and the second scanner 112 are arranged to face each other with the conveyance path P interposed therebetween. However, the linear light receiving sensor provided in the first scanner 111 and the second scanner are provided. The line-shaped light receiving sensor included in 112 is offset by about 5 mm in the conveyance direction of the recording medium S. With this configuration, it is possible to eliminate the influence of the light from each other's light source on the other light receiving sensor, and higher reading quality can be obtained.

  The first scanner 111 and the second scanner 112 include R, G, and B light sources, respectively, and can read monochrome (binary, 16 gradations, 256 gradations) and full color. In addition, the reading resolution of the first scanner 111 and the second scanner 112 can be set in, for example, three stages of 200 dpi (dots / inch), 300 dpi, and 600 dpi. The number of reading lines in the conveyance direction (sub-scanning direction) of the recording medium S is set according to the reading resolution in the main scanning direction, and the conveyance speed of the recording medium S at the time of reading is the processing of the reading resolution and the detection value of the light receiving sensor. It is adjusted according to specifications such as speed.

FIG. 4 is a block diagram showing the configuration of the control system of the dot impact printer 10.
Each unit shown in FIG. 4 is realized by cooperation of hardware and software mounted on a control board (not shown).
The dot impact printer 10 is executed by the CPU 40 as a control unit that controls the entire dot impact printer 10 based on the control program, and the RAM 41 and CPU 40 that temporarily stores the control program and data read from the EEPROM 42 by the CPU 40. EEPROM 42 storing control program to be processed and data to be processed, interface (I / F) 43 for converting data format when transmitting / receiving information to / from host computer 200 controlling dot impact printer 10, various sensors A gate array (G / A) 45, a motor driver 46 for driving various motors, and a head driver 48 for driving the head are connected to each other via a bus 49.
The RAM 41 functions as a storage unit and forms an image buffer (not shown) that temporarily stores read image data read by the optical reading device 110.

An alignment sensor 39, a medium edge sensor 47, a medium width sensor 55, a first scanner 111, and a second scanner 112 are connected to the gate array 45. The gate array 45 quantizes the analog voltage input from the alignment sensor 39, the medium edge sensor 47, and the medium width sensor 55 into digital data, and outputs the digital data to the CPU 40. The first scanner 111 and the second scanner 112 optically read the surface of the recording medium S by CIS, and supply the detection voltage of CIS to the gate array 45 for each pixel of the CIS. The analog voltage supplied from the second scanner 112 is quantized and output as digital data to the CPU 40.
The motor driver 46 is connected to the medium transport motor 26, the carriage drive motor 56, the magnetic head drive motor 57, and the alignment motor 58, and supplies these motors with drive currents and drive pulses to operate these motors. The motor driver 46 may be connected to an alignment motor 58 (FIG. 4) for operating the alignment plate 38 (FIG. 3).
The medium edge sensor 47 is connected to the recording head 18 and the magnetic head 34 and supplies a driving current to the recording head 18 to cause the recording wire to protrude, while the magnetic head 34 drives for reading / writing. When outputting current and reading magnetic data, the detection voltage (analog voltage) of the magnetic head 34 is detected and output to the CPU 40 as digital data.

  The CPU 40 acquires detection states of various sensors through the gate array 45, the motor driver 46, and the head driver 48 based on a control program stored in the EEPROM 42, and drives each motor to convey the recording medium S. Recording on the recording medium S is executed by driving each head. Further, the CPU 40 transports the recording medium S by the medium transport mechanism 100 and reads the surface of the recording medium S by the first scanner 111 and the second scanner 112 by the gate array 45. During execution of this reading, the CPU 40 temporarily stores data input from the gate array 45 in a buffer memory (not shown) provided in the RAM 41 sequentially. Then, the CPU 40 reads out the image data stored in the buffer memory (not shown) and transmits it to the host computer 200 via the interface 43.

FIG. 5 is a diagram showing a check as a specific example of the recording medium S processed by the dot impact printer 10. FIG. 5A shows the front side, and FIG. 5B shows the back side.
The check-shaped recording medium S is a horizontally long rectangle, is inserted into the dot impact printer 10 with one long side as a leading edge, and is conveyed in the short side direction as indicated by an arrow in the figure. Here, the length (width) in the long side direction of the recording medium S is Lx, and the length (height) in the short side direction is Ly.
As shown in FIG. 5 (A), a check serial number is printed on the surface of the recording medium S, and a column for entering or printing the date of withdrawal, the amount of money, the addressee, the name and address of the originator, the signature, etc. Furthermore, MICR characters are printed or printed in the lower left area MA. Further, as shown in FIG. 5B, on the back surface of the recording medium S, there is provided a column in which an issuer financial institution name and an account number are entered or printed. In addition, a check serial number may be printed on the back surface of the recording medium S.

The recording medium S shown in FIG. 5 is manually inserted so that the front side shown in FIG. 5 (A) faces down inside the dot impact printer 10 and the back side shown in FIG. 5 (B) faces up. It is inserted from the mouth 15. The front surface of FIG. 5A corresponds to the lower surface and is read by the second scanner 112, and the back surface of FIG. 5B is the upper surface and is read by the first scanner 111.
The reading range R of the first scanner 111 is set to be slightly larger than the width Lx and the height Ly of the recording medium S as shown by a broken line in FIG. 5B corresponding to the size of the recording medium S. Yes. The width and height of the reading range R are the size obtained by adding a reading margin to the width Lx and height Ly of the recording medium S, and the size of the reading margin is, for example, about several millimeters. For this reason, the first scanner 111 can optically read the entire back surface of the recording medium S. Further, the magnetic head 34 reads the MICR characters in the area MA in FIG.
Similarly, the reading range R of the second scanner 112 is set to be slightly larger than the width Lx and height Ly of the recording medium S as shown by a broken line in FIG. 5A corresponding to the size of the recording medium S. Has been. In this embodiment, the width and height of the reading range R of the second scanner 112 are the same size as the reading range R of the first scanner 111, and a reading margin is added to the width Lx and height Ly of the recording medium S. It is a size. For this reason, the second scanner 112 can optically read the entire front surface of the recording medium S.
The dot impact printer 10 reads the recording medium S by the optical reading device 110 while transporting the recording medium S in the forward direction or the reverse direction along the short side direction. The conveyance direction at the time of reading is automatically determined so that the portion to be read can be read with the shortest conveyance distance.

  A command is transmitted from the host computer 200 to the dot impact printer 10 via the interface 43, and the size (Lx, Ly) of the recording medium S to be read is designated by this command. The CPU 40 specifies the size of the recording medium S based on the command received from the host computer 200 and sets the reading range R. Here, the command transmitted from the host computer 200 includes information indicating the position of the area MA in the recording medium S. The position of the area MA is specified by, for example, a distance Dx from the short side of the recording medium S and a distance Dy from the long side. Based on this command, the CPU 40 controls the motor driver 46 and the head driver 48 to drive the magnetic head driving motor 57 and execute reading by the magnetic head 34.

  Commands transmitted from the host computer 200 to the dot impact printer 10 include a setting command, a scan (reading) start command, and a paper discharge command. The setting command includes reading resolution in the optical reading device 110, necessity of reading for each reading surface (upper surface, lower surface), scanning direction, color type (color scanning or monochrome scanning), gradation when performing monochrome scanning, monochrome This is a command for designating the LED emission color when scanning, the area to be read when reading only a part of the reading range R (area start position and end position), and the like. Here, the coordinates of the start position and end position of the area are expressed, for example, as coordinates with the left end of the leading end of the reading range R as the origin. The CPU 40 that has received the setting command acquires a value designated by the setting command as a setting value.

The scan start command is a command for instructing the dot impact printer 10 to start a reading operation. This scan start command includes information for designating the entire reading range R as the reading operation to be executed or the designated area reading (partial reading) for reading the area to be read designated by the setting command. . The CPU 40 that has received the scan start command controls the gate array 45 and the motor driver 46 to start reading by the optical reading device 110.
The discharge command is a command for instructing to discharge the recording medium S from the manual feed port 15 or the discharge port 20 after the reading is completed. The discharge command and the discharge direction ( Information indicating whether it is the manual feed port 15 or the discharge port 20). The CPU 40 that has received the paper discharge command discharges the recording medium S from the side designated by this paper discharge command.

Next, the reading operation by the dot impact printer 10 will be described separately for the case where the recording medium S is conveyed in the forward direction and the case where it is conveyed in the reverse direction.
FIG. 6 is a diagram showing a reading operation in the forward direction among the reading operations by the dot impact printer 10. 6A shows the scanning direction, FIG. 6B schematically shows the entire reading operation, and FIG. 6C schematically shows the designated area reading operation.

When the dot impact printer 10 performs forward reading, the optical reading is performed while the recording medium S is conveyed from the front side (left in FIG. 2) to the rear side (right in FIG. 2) of the dot impact printer 10. After passing through the device 110, reading is performed by the first scanner 111 and the second scanner 112.
In this case, as shown in FIG. 6A, reading is performed from the front end (upper end in the drawing) to the rear end (lower end in the drawing) of the reading range R. The read image of one line read by the first scanner 111 and the second scanner 112 passes through the gate array 45 for each line in order from the left end (source of arrow) to the right end (point of arrow) of the reading range R. Is output. Therefore, the left end of the front end of the reading range R is the reading start position, and the right end of the rear end is the end position.

  When the CPU 40 performs overall reading in accordance with a command transmitted from the host computer 200, the CPU 40 divides the reading range R by a predetermined length in the scanning direction (sub-scanning direction) as shown in FIG. 6B. Here, each divided part is called a block. The reading range R of the first scanner 111 and the reading range R of the second scanner 112 are each divided into a plurality of blocks for each predetermined length, and each block is alternately numbered on the upper and lower surfaces in order from the head in the scanning direction. Is attached. Specifically, the top of the reading range R on the upper surface is block 1, the top of the reading range R on the lower surface is block 2, and the following numbers are given as blocks 3, 4,. The length of the rear end block is a remainder obtained by dividing the length of the reading range R by a predetermined length.

  Each block is a unit of processing for transmitting read images of the first scanner 111 and the second scanner 112 to the host computer 200. That is, when the read image data for one block is stored in the image buffer (not shown) of the RAM 41, the CPU 40 transmits the read image data for one block to the host computer 200. The predetermined length, that is, the length of the block in the transport direction (scan direction) is determined according to the capacity of an image buffer (not shown) provided in the RAM 41. For example, when the image buffer has a capacity for storing 300 lines of full-color read image data with a maximum resolution (600 dpi), the block length is set to an appropriate length of 300 lines or less.

  When the entire reading is performed, the CPU 40 controls the motor driver 46 to rotate the medium transport motor 26 and controls the gate array 45 while transporting the recording medium S at a predetermined speed to control the first scanner 111 and the second scanner. The light source 112 emits light, and the read image data is generated based on the detection value of the light receiving sensor, and the read image data is stored in the image buffer of the RAM 41 line by line.

The CPU 40 continues the above operation without interrupting the conveyance of the recording medium S until the entire reading range R is read by the first scanner 111 and the second scanner 112, and reading of any block is completed during this operation. (End) When the read image data for one block is stored in the image buffer of the RAM 41, the read image data for one block is read from the image buffer and transmitted to the host computer 200, and the transmission is completed. The read scanned image data is erased from the image buffer. When the read image data is erased, a large empty area is generated again in the image buffer, and the subsequent read image data can be stored.
The CPU 40 transmits the read image data to the host computer 200 as described above every time reading of one block is completed. The order of transmitting the read image data of each block is the order in which the reading is completed, and is not necessarily the order of the block numbers.
When the CPU 40 transmits the read image data to the host computer 200, information such as the read surface (upper surface or lower surface), the read block size, the block number, and the data length is included in the read image data as a header. Add and send. Further, when the amount of read image data is large, the CPU 40 can also divide and transmit one block of read image data. In this case, the host computer 200 transmits the divided read image data. Information for combining may be added as a header.

Further, when the designated area reading is performed according to the command received from the host computer 200, the CPU 40 arranges the area to be read designated by the setting command in the reading range R as shown in FIG. In the example of FIG. 6C, areas A1 and A2 are arranged in the reading range R on the upper surface, and area A3 is arranged in the reading range R on the lower surface.
The CPU 40 arranges blocks according to the arranged area to be read. Here, when the length of the arranged area in the scanning direction is shorter than the length of the block described above, the CPU 40 sets one area as one block. The leading edge and the trailing edge of the block coincide with the leading edge and the trailing edge of the area. When the length of the area is longer than the predetermined length, the CPU 40 divides the area to be read into the predetermined length from the head side in the scanning direction. In the example of FIG. 6C, since the areas A1 and A3 exceed the predetermined length, the area A1 is divided into blocks 1 and 3, and the area A3 is divided into blocks 2 and 4. The block numbers are alternately assigned to the top and bottom surfaces in the order of the position of the front end of the block, as in the case of the entire reading.
When a plurality of areas to be read are arranged in the width direction of the reading range R and overlap in the scan direction, all the overlapped areas are regarded as a block. When the length of the block in the scan direction exceeds the upper limit of the block length, the block is divided into a plurality of blocks in the scan direction.

  Then, the CPU 40 starts reading the areas A1 to A3 in the reading range R. The CPU 40 continues the reading operation by controlling the gate array 45 and the motor driver 46 without interrupting the conveyance of the recording medium S until all areas are read by the first scanner 111 and the second scanner 112. When reading of any block on either the upper surface or the lower surface is completed and the read image data for one block is stored in the image buffer of the RAM 41, the read image data for one block is converted into an image. The read image data is read from the buffer and transmitted to the host computer 200, and the read image data that has been transmitted is erased from the image buffer. The transmission order in this case is the order of the blocks that have been read in the same manner as the entire reading, and is not necessarily the order of the block numbers.

  When the CPU 40 transmits read image data to the host computer 200, a header added to the read image data includes a read surface (upper surface or lower surface), a read block size, a block number, a data length, and the like. The information further includes information such as the area number and the coordinates of the start position and end position of the area. When one area is divided into a plurality of blocks, information for combining blocks constituting each area may be included. Further, when a plurality of areas are included in one block, the CPU 40 cuts the read image data of this block into areas and transmits them to the host computer 200 for each area. Also in this designated area reading, read image data having a large amount of data may be divided and transmitted to the host computer 200.

  The host computer 200 receives the read image data transmitted from the dot impact printer 10 and reconstructs the read image for each block based on information such as a header. Further, when the entire reading is designated by the setting command transmitted to the dot impact printer 10, the host computer 200 combines the blocks on the upper surface and the lower surface to generate the read image data of the entire reading range R. In addition, when the designated area reading is designated by the setting command, the host computer 200 combines these blocks when one area is divided into a plurality of blocks, and one area constitutes one block. Uses the read image data of the block as it is to generate read image data for each area.

FIG. 7 is a diagram showing a reading operation in the reverse direction among the reading operations by the dot impact printer 10. FIG. 7A shows the scanning direction, FIG. 7B schematically shows the overall reading operation, and FIG. 7C schematically shows the designated area reading operation.
When the dot impact printer 10 performs reading in the reverse direction, the recording medium S passes through the optical reading device 110 while being transported from the rear side to the front side of the dot impact printer 10, and the first scanner 111 and Reading is performed by the second scanner 112. In this case, as shown in FIG. 7A, reading is performed from the rear end (lower end in the drawing) to the front end (upper end in the drawing) of the reading range R. Since the read image of one line read by the first scanner 111 and the second scanner 112 is output via the gate array 45 in order from the left end of the reading range R, the left end of the rear end of the reading range R is the reading start position. The right end of the tip is the end position.

When the entire reading is performed in the reverse direction, as shown in FIG. 7B, the reading range R is divided into blocks from the rear end. In this case, the block numbers are alternately assigned to the upper and lower surfaces in order from the head side at the time of reading. Other operations are the same as those in the forward whole reading.
Further, when reading the designated area in the reverse direction, as shown in FIG. 7C, the area to be read is arranged in accordance with the setting command received from the host computer 200, and then the reading range that is the head in the scanning direction. A block is arranged from the rear end side of R. An area exceeding the upper limit of the block length is divided into predetermined lengths with the rear end side of the reading range R as a reference. Other operations are the same as those in the designated area reading in the forward direction.
The read image data read in the reverse direction is upside down from the read image data in the forward direction. For this reason, the CPU 40 of the dot impact printer 10 may invert the read image data and then send it to the host computer 200, but the host computer 200 that sent the setting command has information about the scan direction. Therefore, based on this information, the host computer 200 may perform processing for inverting the top and bottom of the read image data.

FIG. 8 is a flowchart showing the operation of the dot impact printer 10 according to the present embodiment.
The CPU 40 of the dot impact printer 10 first inserts the alignment plate 38 into the recording medium when the recording medium S is inserted into the manual feed slot 15 and the leading edge of the recording medium S is detected by the medium end sensor 47 (step S1; Yes). In addition to projecting into the transport path P of S, the medium transport motor 26 is operated to align the recording medium S (step S2).

  Next, the CPU 40 determines whether the detected recording medium S is a check or a passbook (step S3). Here, the CPU 40 may acquire information transmitted from the host computer 200 and determine the type of the recording medium S based on this information, or may use the medium edge sensor 47 or the medium width sensor 55. The position of the leading edge or side edge of the recording medium S may be detected, and the type of the recording medium S may be determined based on the position or size. Further, based on the positions of the leading edge and side edge of the recording medium S detected using the medium edge sensor 47 and the medium width sensor 55, the magnetic head 34 tries to read the MICR information. The type of the recording medium S may be determined by determining whether it is in the MA. In the present embodiment, the CPU 40 receives information for specifying the type (check or passbook) of the recording medium S from the host computer 200, and information on the size of the check when the recording medium S is a check. Information on the position of the area MA and information on the transport distance are acquired, and it is determined whether the check or the passbook is based on the information.

  If the recording medium S is not a check (step S3; No), the CPU 40 determines that the recording medium S is a passbook, for example, and reads the magnetic stripe provided in the passbook, so that the recording medium S is read from the magnetic head 34. Thus, the magnetic head 34 reads the magnetic stripe and / or writes the magnetic stripe (step S4). Further, the CPU 40 conveys the recording medium S to the position of the recording head 18 and executes recording on the recording surface by the recording head 18 (step S5), and ejects the recording medium S from the manual feed port 15 (step S5). S6), the operation is terminated.

  When the recording medium S is a check (step S3; Yes), the CPU 40 determines whether or not a MICR information read command has been received from the host computer 200 (step S7). When the CPU 40 determines that the MICR information read command has been received (step S7; Yes), the alignment plate 38 is retracted from the transport path P, and at least the front end of the recording medium S is at the medium width sensor 55. After the recording medium S is conveyed by the medium conveying mechanism 100 until it reaches directly below, the carriage drive motor 56 (FIG. 5) is driven to scan the carriage 19 in the main scanning direction, and the output signal from the medium width sensor 55 and the carriage Based on the 19 positions in the main scanning direction, the position in the width direction of the recording medium S is detected (step S8). Further, the CPU 40 monitors the output signal of the medium end sensor 47 while the recording medium S is conveyed by the medium conveying mechanism 100, and detects the rear end position of the recording medium S (step S9).

  Next, the CPU 40 transports the recording medium S by the medium transport mechanism 100 to a position where the area MA can be read by the magnetic head 34 (step S10), and controls the motor driver 46 to operate the magnetic head drive motor 57. Then, the MICR character displayed in the area MA is read by the magnetic head 34 (step S11). The information (MICR information) read by the magnetic head 34 is digitized by the gate array 45, and the CPU 40 acquires this digital data (step S12), analyzes the character information based on this data, and converts it into text information. Conversion is performed (step S13). Here, it is determined whether there are more characters that cannot be analyzed than the preset number, or whether the analysis is successful within the preset number range (step S14), and the set number is exceeded. If there are characters that cannot be analyzed (step S14; No), an error is output, the recording medium S is ejected (step S15), and the operation is terminated. In step S15, the occurrence of an error may be notified by a display unit or the like provided in the dot impact printer 10 itself, information indicating the occurrence of the error may be transmitted to the host computer 200, or both may be performed. .

  On the other hand, when the analysis is successful when the number of unanalyzable characters does not exceed the set number (step S14; Yes), the CPU 40 executes scanning by the optical reader 110 and transmits the read image data to the host computer 200. (Step S16), and waits until the execution instruction for the endorsement printing is received from the host computer 200 (Step S17). When the execution instruction for the endorsement printing is received (Step S17; Yes), the medium transport motor 26 is turned on. The recording medium S is transported to the bottom of the recording head 18, and the carriage drive motor 56 and the recording head 18 are driven to perform endorsement printing on the back surface of the recording medium S to indicate processing (step S18). When the endorsement printing is completed (finished), the CPU 40 further rotates the medium transport motor 26 and discharges the recording medium S from the manual feed port 15 or the discharge port 20.

FIG. 9 is a flowchart showing the reading operation executed by the dot impact printer 10, and shows the operation shown in step S16 of FIG. 8 in more detail.
The CPU 40 receives the setting command transmitted from the host computer 200 (step S21), and acquires various setting contents designated by this setting command (step S22). Here, the CPU 40 determines whether or not an area to be read is specified by the setting command (step S23). If no area is specified (step S23; No), the CPU 40 scans in the scan direction specified by the setting command. Based on this, the position of the reference block for reading the entire reading range R is acquired (step S24). The position of the block when the entire reading range R is read is stored in, for example, the EEPROM 42.
When the area to be read is specified by the setting command (step S23; Yes), the CPU 40 acquires the area number and the coordinates of the start position and end position of each area (step S24), and reads the area into the reading range. Based on the scan direction specified by the setting command, the block position suitable for the area is determined (step S26).

After acquiring or determining the block position, the CPU 40 waits until a scan start command is received from the host computer 200 (step S27). When the scan start command is received (step S27; Yes), the scan specified by the setting command is performed. In the case of the direction, whole reading or designated area reading, or designated area reading, the position of the designated area and the current position of the recording medium S are used to move the recording medium S of the optical reader 110 by the medium transport mechanism 100. The sheet is transported to the scan start position (step S28), and reading by the first scanner 111 and the second scanner 112 is performed while transporting the recording medium S (step S29). During execution of this reading, the CPU 40 determines whether or not there is a block that has been read (step S30). If there is a block that has been read (step S30; Yes), the read image data of that block is stored in the image buffer of the RAM 41. Is started and transferred to the host computer 200 (step S31). When the transfer is completed, the read image data of the block in the image buffer is deleted. The CPU 40 determines whether or not reading of all the blocks has been completed (step S32). If there is a block that has not been read (step S32; No), the CPU 40 returns to step S29 and continues the reading operation. If there is a newly completed block, the read image data of that block is transferred.
When the reading of all the blocks in the reading range R on the upper and lower surfaces is completed (step S32; Yes), the reading operation is finished.

  Note that, as described above, the light receiving sensors of the first scanner 111 and the second scanner 112 are offset, and in the present embodiment, the first scanner 111 is offset by 5 mm toward the front side. For this reason, when scanning in the forward direction, the reading range R on the upper surface is read before the reading range R on the lower surface, and when scanning in the reverse direction, the reading range R on the lower surface is read on the upper surface. Reading ends before the range R.

  As described above, in the dot impact printer 10 according to the embodiment to which the present invention is applied, the CPU 40 causes the optical reading device 110 to read the block set in the reading range R of the optical reading device 110, and at least one of them. When the reading of the block is completed, the read image data of the block that has been read is read from the image buffer of the RAM 41 and transmitted to the host computer 200 even before the reading of the other blocks is completed. The waiting time relating to the transmission of the read image data can be shortened without waiting for the transmission until the reading of the image is completed. Accordingly, it is possible to increase the speed of the entire reading process and improve convenience. In particular, when the read image data has a large capacity, such as when the reading resolution is high or when color reading is performed, the waiting time can be significantly reduced. Further, the image buffer of the RAM 41 only needs to have a capacity for storing at least the read image data for the block, and may have a smaller storage capacity than the case where the read image data for the entire reading range R is stored.

  The optical reading device 110 is configured by disposing a first scanner 111 that reads one surface of the recording medium S and a second scanner 112 that reads the other surface of the recording medium S on both sides of the conveyance path P, respectively. Both sides of the recording medium S can be read, and the CPU 40 reads the block set in the reading range R of the first scanner 111 and the second scanner 112, and when reading of at least one of the blocks ends, Even before the reading of another block set in the reading range R on the same side as the block or the reading range R on the other side is finished, the read image data of the block that has been read is read from the image buffer to the host. Send to computer 200. For this reason, the waiting time concerning transmission of the read image data can be shortened, and both sides of the recording medium S can be read at high speed. Furthermore, the capacity of the image buffer of the RAM 41 can be smaller than that for storing the scanned image data on both sides.

  Furthermore, when the area to be read is specified in the reading range R and the specified area is read, the CPU 40 divides an area exceeding a predetermined length into predetermined lengths in the transport direction of the recording medium S and sets blocks. When reading of at least one block is completed by the optical reading device 110, the read image data of the block whose reading has been completed is read from the image buffer and transmitted to the host computer 200, so that the designated area is large and the entire area is read. Even if it takes time to read the image data, transmission of the read image data can be started in a shorter time, and the waiting time related to the transmission of the read image data can be greatly shortened.

In addition, when the CPU 40 divides the designated area to set a block and transmits the read image data of this block to the host computer 200, the CPU 40 adds information for identifying the original area to which the block belongs. Therefore, the host computer 200 that has received the read image data can assemble a read image of the entire designated area from the read image data divided into blocks.
Further, when the entire reading range R is instructed by a command from the host computer 200, the CPU 40 transmits the read image data for each block with each portion obtained by dividing the reading range R as a block. Therefore, it is possible to shorten the waiting time related to the transmission of the read image data without waiting for the transmission until the reading of the entire reading range R is completed. In addition, when the entire reading is designated, the waiting time can be automatically shortened without any operation or instruction for setting the position of the block, etc., and the convenience can be further improved. it can.

  That is, the CPU 40 selectively selects either the entire reading for reading the entire reading range R or the designated area reading for reading a part of the reading range R based on the setting command and the scan instruction command transmitted from the host computer 200. When the entire reading is performed, the reading range R is divided into a plurality of blocks. When the designated area reading is performed, the block is based on the area designated as the reading target in the reading range R. When the reading of at least one of the blocks is completed by reading the set blocks sequentially by the optical reader 110, the reading of the blocks that have been read is completed even before the reading of the other blocks is completed. Image data is read from the image buffer of the RAM 41 and transmitted to the host computer 200 , The length in the conveying direction of the recording medium S when performing a designated area reading is if there is a predetermined length or more areas, and sets the block by dividing the area into a predetermined length. Thereby, both when reading the entire reading range R and when reading only a part of the area, it is possible to shorten the waiting time related to the transmission of the read image data and improve the convenience.

Although one embodiment of the present invention has been described above, the present invention is not limited to this. For example, in the above-described embodiment, the arrangement is arranged on the conveyance path P of the recording medium S in the order of the alignment mechanism 28, the recording head 18, and the optical reading device 110. However, the arrangement of each of these devices is arbitrary, and for example, the optical reading device 110 may be arranged closest to the manual feed port 15.
In the above embodiment, the control unit mounted on the control board (not shown) mounted on the dot impact printer 10 has the function shown in the functional block of FIG. 4 and controls each unit of the dot impact printer 10. Although the configuration has been described as an example, for example, a device externally connected to the dot impact printer 10 may function as each functional unit illustrated in FIG. 4 and control the operation of the dot impact printer 10. Furthermore, each functional block shown in FIG. 4 is realized by cooperation between hardware and software, and a specific hardware implementation form, software specifications, etc. are arbitrary, and other details. The configuration can be arbitrarily changed.

  In the above embodiment, the first scanner 111 and the second scanner 112 have been described as configurations capable of monochrome and color scanning using RGB light sources. For example, a light source that emits infrared light is used. It may be configured to read by infrared rays. Magnetic ink has a higher infrared absorption rate than normal ink, so by using infrared, only characters printed with magnetic ink can be captured, and MICR information in area MA is optically efficient. It can be expected to be well readable.

  Furthermore, in the above embodiment, the reading by the magnetic head 34 is executed prior to the reading by the first scanner 111 and the second scanner 112, but the reading by the first scanner 111 and the second scanner 112 is performed. The reading may be performed prior to reading by the magnetic head 34. In that case, the area MA in which the MICR information is recorded may be specified based on the result of the OCR process, and reading by the magnetic head 34 may be executed based on the specified result. Further, when reading using infrared rays, the range in which the MICR information is recorded can be easily specified, so that the reading range by the magnetic head 34 can be performed based on the result.

In the above embodiment, the case where the present invention is applied to a flat bed type apparatus that horizontally conveys the recording medium S has been described as an example. However, the present invention is not limited to this, and forms such as checks. Of course, the present invention can be applied to an apparatus having a conveyance path for conveying the recording medium S in a standing state. In the above-described embodiment, the dot impact printer 10 including the optical reading device 110 has been described as an example. However, the present invention is not limited to this, and for example, an ink jet printer, a thermal printer, A laser printer or the like may be provided with an optical reading unit corresponding to the optical reading device 110. In addition to an apparatus used as an independent printer, an optical reading unit corresponding to the optical reading apparatus 110 is included in an apparatus incorporated in another apparatus (ATM (Automated Teller Machine) or CD (Cash Dispenser)). It may be provided.
Furthermore, the present invention is not limited to a configuration in which the optical reading device 110 is provided integrally with a device that records characters and images on a recording medium such as paper, and the present invention is applicable to various devices including, for example, an independent scanner device and a copying machine Is possible.

  DESCRIPTION OF SYMBOLS 10 ... Dot impact printer (optical reader), 15 ... Manual feed port, 18 ... Recording head, 20 ... Ejection port, 29 ... Magnetic data reading part, 40 ... CPU (control part), 41 ... RAM (memory | storage part), DESCRIPTION OF SYMBOLS 43 ... Interface, 100 ... Medium conveyance mechanism (conveyance part), 110 ... Optical reader (optical reading part), 111 ... 1st scanner (1st reading part), 112 ... 2nd scanner (2nd reading part), 200 ... host computer (other devices).

Claims (8)

A transport unit for transporting a medium to be read;
An optical reading unit that is provided in a conveyance path of the medium and optically reads the medium conveyed by the conveyance unit;
A storage unit for storing a read image read by the optical reading unit;
A control unit that controls a reading operation of the optical reading unit and reads a read image stored in the storage unit and transmits the read image to another device,
The control unit causes the optical reading unit to read one or a plurality of regions set within the reading range of the optical reading unit, and when reading of at least one of the regions is completed, reading of the other region is performed. Reading the read image of the area that has been read from the storage unit and transmitting it to the other device even before
An optical reader characterized by the above. The optical reading unit is configured by arranging a first reading unit that reads one surface of the medium and a second reading unit that reads the other surface of the medium on both sides of the conveyance path, respectively.
The control unit causes one or a plurality of areas set in at least one of the reading ranges of the first and second reading units to be read, and reading ends when reading of at least one of the areas ends. The read image of the area where the reading has ended is completed even before the reading of the other area set to the same reading range as the area or the other area set to another reading range is completed. Reading from the storage unit and transmitting to the other device;
The optical reader according to claim 1. The control unit divides each of the regions set within the reading range for each predetermined length in the conveyance direction of the medium to set a small region, and at least any one of the above-mentioned by the optical reading unit When reading of the small area is finished, reading the read image of the small area that has been read from the storage unit and transmitting it to the other device;
The optical reading device according to claim 1 or 2. The control unit stores identification information for identifying the region set in the reading range in association with each of the regions in the storage unit, and the read image of the small region is stored in the small region. Transmitting to the other device in a form with identification information of the original area to which it belongs,
The optical reading device according to claim 3. The control unit sets each part obtained by dividing the reading range into a plurality of areas as the area,
The optical reading device according to claim 1 or 2. The control unit is configured to selectively execute either whole reading for reading the whole reading range or partial reading for reading a part of the reading range,
When performing full reading, each portion obtained by dividing the reading range of the optical reading unit is set as the region to be read, and when performing partial reading, within the reading range of the optical reading unit. In addition, one or a plurality of the areas are set as reading targets, the set areas are sequentially read by the optical reading unit, and when reading of at least one of the areas is completed, reading of the other areas is performed. Even before the end, read the read image of the area that has been read from the storage unit, and send it to the other device,
When performing partial reading, if the length of any one of the areas in the conveyance direction of the medium is equal to or longer than a predetermined length, the area is divided into predetermined lengths, and a small area is set. When reading of at least one of the small areas is completed by the optical reading unit, the read image of the small area that has been read is read from the storage unit and transmitted to the other device;
The optical reading device according to claim 1 or 2. Controlling an optical reading apparatus comprising: a transport unit that transports a medium to be read; and an optical reader that is provided in a transport path of the medium and optically reads the medium transported by the transport unit;
One or a plurality of regions set within the reading range of the optical reading unit is read by the optical reading unit, and a read image read by the optical reading unit is stored in a storage unit, and at least one of the regions When the reading of is completed, the read image of the area that has been read is read from the storage unit and transmitted to the other device even before the reading of the other area is completed.
A method for controlling an optical reading device. A control unit for controlling an optical reading device comprising: a conveyance unit that conveys a medium to be read; and an optical reading unit that is provided in a conveyance path of the medium and optically reads the medium conveyed by the conveyance unit. Is an executable program,
The control unit causes the optical reading unit to read one or a plurality of regions set within the reading range of the optical reading unit, and causes the storage unit to store a read image read by the optical reading unit, When the reading of one of the areas is completed, the read image of the area that has been read is read from the storage unit and transmitted to the other device even before the reading of the other area is completed. thing,
A program characterized by

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