JP3693833B2 - Image reading device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an image reading apparatus provided with an automatic document feeder, and more particularly to an image reading apparatus capable of reading a double-sided document and printing required data on a document after reading.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, in an image reading apparatus such as a facsimile or an image scanner, in order to confirm whether a document has been read or transmitted, a document (marked stamp) is added to a document after reading or transmission.
Also, in an image reading apparatus such as an optical file, the amount of input originals is enormous, and considerable effort is required when collating input data with originals. Therefore, a printer is mounted on the image reading apparatus, An apparatus that prints arbitrary characters, numbers, symbols, and the like on a document is known.
Known types of printers include wire dot printers, daisy wheel printers, thermal printers, ink jet printers, bubble jet printers, and the like, but each has problems when used for printing after reading a document.
For example, thermal printers require the use of thermal paper and cannot handle various documents. Impact printers such as wire dot printers and daisy wheel printers have a problem of high noise during printing. is there. Ink jet printers and bubble jet printers are inconvenient because they need to be installed above the original reading surface for printing. Here, the reason why the ink jet printer is installed at the upper part will be described in detail. For example, when the printer is installed at the lower part of the document transport path for printing in the apparatus that performs face-down paper discharge in order to align the pages. Ink or the like must be blown up and clogging is likely to occur. Therefore, it is necessary to install in the upper part and blow out from the upper part.
Note that the case of printing on a document in a facsimile or the like is a case of printing characters or symbols indicating matters such as the above-described transmission and transmission date and time.
Therefore, when the printer is installed below the document conveyance path, a wire dot printer or a daisy wheel printer is used even if the printing noise is large.
By the way, the print target position (reference print position) on the original by the printer as described above is a predetermined distance from the end of the reading area on the original surface in order to enable correct printing even when the original is double-fed. (For example, 10 mm from the rear end of the reading area) is often set.
[0003]
[Problems to be solved by the invention]
However, when the reading means on the back side of the document is positioned downstream of the reading means on the document surface in the document conveyance path, the reading of the document surface is completed, and the print target position (reference print position) of the document is conveyed. When the print position on the path is reached, the back side document may still be read depending on the settings of the reading areas on the front side and the back side of the document. In this case, the printing operation must be performed while the back side of the original is being read, and correct printing becomes difficult due to the conveyance of the original. On the other hand, printing is performed by the impact printer while the back side is being read. There was a problem that was not possible.
In addition, when a document is double-fed, the document surface of the lowermost document sheet is read from among a plurality of document sheets to be fed, and a printed mark is printed on the document surface of the lowermost document sheet. A document on which a normal printed mark is printed has been read on both the front and back sides. However, the lowermost document sheet of a multi-feed document is actually not read on the back side of the document even though the printed mark indicating that both the front side and the back side of the document have been read is printed. Become.
The present invention has been made in order to solve the above-described conventional problems, and has a printing unit that can print required information and data when reading a double-sided original at a small size and at low cost. An object of the present invention is to provide an image reading apparatus capable of reading a double-sided document, and to provide double-sided document reading having printing means capable of individually printing required information and data on both sides of a document for each side of a double-sided document. An object is to provide a possible image reading apparatus.
[0004]
[Means for Solving the Problems]
  In order to achieve the above-described object, an image reading apparatus according to the first aspect of the present invention includes a front-surface image reading means for reading an image on the surface of a document and an image on the back surface of the document in a conveyance path of the automatic document feeder. Back side image reading means for reading;SaidPrinting means that performs printing processing at a reference printing position that is a predetermined distance away from the end of the reading area on the surface of the document, and the printing means is located at a printing location in the transport path.SaidOn the surface of the documentSaidIn an image reading apparatus capable of reading a double-sided document configured to perform a printing process when a reference printing position has been reached,SaidThe reference print position is within the transport path.SaidWhen the back side image reading unit is executing a document reading process when the printing place is reached, the printing process by the printing unit is stopped. When reading a document, priority is given to the reading operation on the back side of the document. By canceling the printing operation on the original, it is possible to normally perform the reading operation on the back side of the original. According to a second aspect of the present invention, there is provided an image reading apparatus according to the present invention, wherein a front image reading unit that reads an image on the front side of a document, a rear image reading unit that reads an image on the back side of the document,SaidPrinting means that performs printing processing at a reference printing position that is a predetermined distance away from the end of the reading area on the surface of the document, and the printing means is located at a printing location in the transport path.SaidOn the surface of the documentSaidIn an image reading apparatus capable of reading a double-sided document configured to perform a printing process when a reference print position has been reached,SaidThe reference print position is within the transport path.SaidWhen the printing place is reached, the back side image reading meansSaidWhen the reading process of the back side image of the original is being executed, the reading process by the back side image reading unit is stopped, and the printing process by the printing unit is executed, so that the normal printing operation is performed on the original. Can do. According to a third aspect of the present invention, there is provided the image reading apparatus according to the second aspect, wherein the back surface image that has been canceled after the end of the printing process.By reading meansreadingprocessingIs resumed, and by restarting the reading of the back side image, it is possible to normally perform the printing operation on the original without canceling the reading operation of the back side of the original. The present invention of claim 4 is the image reading apparatus according to claim 2, whereinBy backside image reading meansreadingprocessingIs suspended only during the period during which the printing process is performed by the printing means, and the reading of the back side image is temporarily stopped, so that the original can be normally read without canceling the reading operation on the back side of the document. Can be printed.
[0006]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, the present invention will be described based on illustrated embodiments.
FIG. 1 is a side view showing a schematic overall configuration of an embodiment of an image reading apparatus of the present invention.
The image reading apparatus according to the present embodiment shown in FIG. 1 includes an original platen glass 1 on which an original is placed, a first mirror 2 (2 ′) that changes the direction of reflected light from the original by 90 degrees, and the first mirror 2 integrally. The illumination lamp 3 (3 ′) formed to illuminate the original, the second mirror 4 (4 ′) for changing the direction of the reflected light by 90 degrees, and the direction of the reflected light formed integrally with the second mirror 4 A third mirror 5 (5 ′) that changes the angle of 90 degrees, a CCD 6 that photoelectrically converts reflected light from the original and outputs an electrical signal, an assembly part in which the first mirror 2 and the illumination lamp 3 are integrally formed, and a first A traveling body motor 7 for driving an assembly part in which the second mirror 4 and the third mirror 5 are integrally formed; a document tray 8 for setting and placing a document on an automatic document reader; and a document on the document tray 8 Pickup for picking up and feeding paper one by one A roller 9, a registration roller pair 10, a transport drum 11, and a transport roller 12 that transport a document to a reading position B, a transport roller pair 13, a paper discharge roller pair 14, and a back side document that transport the scanned document to a discharge location. Image sensor 15 for reading the image, RSBU 16 which is a circuit board for holding the contact image sensor 15 and performing A / D conversion processing and shading correction for converting an analog signal into a digital signal, and conveying a document and shading correction A white roller 17 serving as a white reference member, an endor unit 18 and an endor platen 19 that are printing means for printing on a document that has been read, and a circuit that holds the CCD 6 and performs analog processing and A / D conversion processing With SBU20 which is a substrate and signal processing substrate SCU 21, RCU 23 for storing an image read by the contact image sensor 15, IOB 24 for performing input / output conversion with the outside, lens 31 for condensing the reflected light from the third mirror 5 on the CCD 6, sequentially It is composed of a paper discharge tray 32 on which the read and discharged original is placed.
Note that the assembly part in which the first mirror 2 and the illumination lamp 3 are integrally formed and the assembly part in which the second mirror 4 and the third mirror 5 are integrally formed are shown in FIG. 1 scans the original while moving by the traveling body motor 7 from the positions of the first mirror 2 ′, the illumination lamp 3 ′, the second mirror 4 ′, and the third mirror 5 ′ in FIG. When reading a document, the document is temporarily fixed at each position of the first mirror 2, the illumination lamp 3, the second mirror 4, and the third mirror 5 in FIG.
[0007]
The document reading operation in the image reading apparatus of the present embodiment shown in FIG. 1 is as follows. When reading a single-sided original placed on the platen glass 1, the original is irradiated by an illumination lamp 3 ′ integrated with the first mirror 2 ′, and the reflected light is reflected by the first mirror 2 ′ and The second mirror 4 ′ and the third mirror 5 ′ that are integrally formed are scanned. Thereafter, the reflected light is focused by the lens 31 and irradiated to the CCD 6 for photoelectric conversion. In that case, the first mirror 2 ′ and the illumination lamp 3 ′ configured as a single body, and the second mirror 4 ′ and the third mirror 5 ′ configured as a single body, with the traveling body motor 7 as a drive source, The document can be moved in the direction of arrow A, and the document on the platen glass 1 is scanned by these movements.
Next, when reading a double-sided document loaded on the document tray 8, the document passes through the reading position B on the lower surface of the conveyance drum 11 by the pickup roller 9, the registration roller pair 10, the conveyance drum 11, and the conveyance roller 12. Further, the paper is further discharged onto the paper discharge tray 32 by the pair of transport rollers 13 and the pair of paper discharge rollers 14.
The surface of the conveyed document is irradiated by the illumination lamp 3 moving in the vicinity of the reading position B when passing through the reading position B, and the reflected light is integrally formed with the first mirror 2. Scanning is performed by the second mirror 4 and the third mirror 5. Thereafter, the reflected light is focused by the lens 31 and irradiated to the CCD 6 for photoelectric conversion.
The pickup roller 9 and the registration roller pair 10 are driven by a paper feed motor (not shown), and the transport drum 11, the transport roller 12, the transport roller pair 13, and the paper discharge roller pair 14 are transport motors (not shown). ).
Next, the further conveyed document advances to the reading position C where the contact image sensor 15 is installed, and the back side of the document is read. The contact image sensor 15 includes an LED (not shown) as a light source, a lens (not shown), and a sensor element (not shown).
When passing through the reading position C, the surface (back surface) opposite to the surface read at the reading position B of the document is irradiated by an LED (lamp) in the contact image sensor 15 installed at the reading position C. The reflected light is converged by a lens in the contact image sensor 15 and irradiated to a sensor element in the contact image sensor 15 to be photoelectrically converted.
A white roller 17 is installed at a portion of the contact image sensor 15 facing the document, and is used as a white member for shading correction at the time of reading by the contact image sensor 15.
Between the conveying roller pair 13 and the paper discharge roller pair 14, an endor unit 18 and an ender platen 19 which are printing means are installed. The endorser 18 is composed of a printing portion made up of alphabet letters and numbers soaked with ink, and a pressure solenoid (not shown) that pressurizes the printing portion in the direction of the endorser platen. The original is stopped on the endorser 18 and fixed in the pressurizing direction by the endorser platen 19, and the alphabetic characters and numbers can be printed on the original surface by the pressurization of the endorser 18 (printing unit).
[0008]
FIG. 2 is a block diagram showing a schematic overall configuration of the image reading apparatus according to the embodiment of the present invention.
In the image reading apparatus of FIG. 2, in addition to the configuration shown in FIG. 1, an option IPU 26 which is a circuit capable of performing arbitrary image processing on an image signal, a main body operation panel 28 having a display unit and an operation input unit, ADU 30 that supplies and controls various electrical components, NIPU 33 that is a circuit that performs various corrections on image signals, a connector 34 that connects the SCU 21 and the optional IPU 26, and an SiBC 35 that manages image data storage means, A SCSI controller 36 that manages SCSI input / output, a CPU 37 that controls the entire image signal processing, a ROM 38 that stores programs and setting values, and a RAM 39 that temporarily stores image data and control signals.
The reflected light of the original entering the CCD 6 on the SBU 20 is converted into an analog signal having a voltage value corresponding to the light intensity in the CCD 6. The analog signal is divided into odd bits and even bits and output.
The analog image signal is input to the A / D converter after the dark potential portion is removed by an analog processing circuit (not shown) on the SBU 20, the odd bits and the even bits are combined, and the gain is adjusted to a predetermined amplitude. Digital signal.
The digitized image signal is subjected to shading correction, gamma correction, MTF correction, and the like by the NIPU 33 on the SCU 21 and then binarized, and is output as a video signal together with the page synchronization signal, line synchronization signal, and image clock. The
The video signal output from the NIPU 33 is output to the option IPU 26 via the connector 34. The video signal output to the option IPU 26 undergoes predetermined image processing in the option IPU 26 and is input to the SCU 21 again.
The video signal input to the SCU 21 again is input to a selector (not shown). The other input of the selector is a video signal output from the NIPU 33, and is configured to select whether or not to perform image processing with the option IPU 26.
[0009]
The video signal output from the selector is input to the SiBC 35 that manages image data storage means (DRAM), and is stored in an image memory constituted by the DRAM.
The image data stored in the image memory is sent to the SCSI controller 36 and transferred to an external device such as a personal computer.
The analog image signal photoelectrically converted by the contact image sensor 15 is digitally converted on the RSBU 16.
The digitized image signal is sent to the RCU 23 after shading correction is performed on the RSBU 16.
The RCU 23 is composed of an image memory composed of DRAM and SiBC that controls the image data memory, and once the image data is stored in the image memory, it is transferred to the SCU 21.
The image data sent from the RCU 23 to the SCU 21 and the image data output from the SiBC 35 on the SCU 21 can be switched, and one of the image data is selected and transferred to the SCSI controller 36.
A CPU 37, a ROM 38, and a RAM 39 are mounted on the SCU 21, and the CPU 37 controls the SCSI controller 36 to communicate with an external device such as a personal computer.
[0010]
The CPU 37 also performs timing control of the traveling body motor 7, which is a stepping motor, a paper feed motor, and a transport motor.
The ADU 30 has a function of relaying power supply of electrical components used in an automatic document feeder (ADF) unit.
An input port connected to the CPU 37 on the SCU 21 is connected to the main body operation panel 28 via the IOB 24. A start switch (not shown) and an abort switch (not shown) are mounted on the main body operation panel 28. When each switch is pressed, the CPU 37 detects that the switch is turned on via the input port.
Here, the rubber belt impact type printer will be described with reference to FIG. 3 which is a diagram showing a schematic configuration of a rubber belt impact type printer as a printing means.
As shown in FIG. 3, the rubber belt impact type printer 51 has a rubber stamp 52 with characters or the like formed on a roll belt surface, a hammer 53 that pushes up the rubber stamp 52 for printing, and a printing ink is applied to the surface of the rubber stamp 52. An ink roll 54 is provided.
The rubber belt impact type printer 51 referred to as an endorser in the present embodiment is small as is usually called a micro printer, and can be installed in the conveyance path of an automatic document conveyance mechanism (ADF). When used in an apparatus, it can be configured in a small size and at low cost, and required information and data can be printed on a document after image reading. Furthermore, since the document is printed on the reading surface of the document that has been scanned, the printed document has already been scanned. Therefore, the document can be scanned simply by checking only the document surface without turning the document over. Can be confirmed. In addition, noise during printing is smaller than other impact type printers.
[0011]
FIG. 4 is an enlarged view of a printing unit according to another embodiment of the present invention.
The difference between the embodiment shown in FIG. 4 and the embodiment shown in FIG. 1 is that two sets of endorser units and endorser platens are arranged between the transport roller pair 13 and the discharge roller pair 14. The front surface printing means in FIG. 4 are the endorser unit 18-1 and the endor platen 19-1, and the back surface printing means are the endorser unit 18-2 and the endor platen 19-2. The conveyance roller pair 13 and the paper discharge roller pair 14 and other components not shown are the same as those in the embodiment shown in FIG. The endorser 18-1 and 18-2 are composed of a printing unit made up of alphabet letters and numbers soaked with ink, and a pressurizing solenoid (not shown) that pressurizes the printing unit in the ender platen direction. The original paper on which both the front and back side reading processes have been completed is stopped between the endorser 18-1 and 18-2, fixed in the pressurizing direction by the endorser platens 19-1 and 19-2, and the endorser 18- 1. Pressing of the endorser 18-2 (printing unit) prints alphabet letters and numbers on both the front and back sides of the document.
[0012]
  FIG. 5 is a diagram showing an example of the positional relationship when a problem occurs in that printing by the printing unit is performed during the document reading process by the reading unit on the back side of the document. In FIG. 5, for example, the reading position C on the document read by the reading means on the back side of the document is positioned downstream in the document transport path from the reading position B on the document read by the reading means on the document surface. Assume that the setting of the front side reading area is from the front edge of the original 61 to the position D on the original 61, and the setting of the rear side reading area of the original 61 is from the front edge of the original 61 to the rear edge of the original 61. ing. In the case of FIG. 5, the reading of the surface of the original 61 from the front edge of the original 61 to the position D on the original 61 is completed, and then the reference print position E of the original 61 is printed at the printing place where printing is performed by the printing means.(This is the print location corresponding to the position of the back surface print position F described later in FIG. 6)The state in which the document is conveyed until it reaches is shown, but the back side of the document 61 is still being read at the reading position C at that time. That is, in the case of FIG. 5, the back side of the document is still being read, that is, the document 61 is being conveyed to receive the reading of the back side of the document.(This is the print location corresponding to the position of the back surface print position F described later in FIG. 6)Thus, the printing operation must be performed on the surface. Therefore, in the case of FIG. 5, even if the printing operation is performed, the original to be printed is moved for reading the back side of the original, so that correct printing cannot be performed. As a result of this printing process, the document 61 is displaced and the like cannot be normally performed.
[0013]
In FIG. 5, a reading area is set on the surface of the document, and a reference printing is performed in which a printing means prints a position E that is a predetermined distance before (for example, 7 mm before) a position D that is the rear end position of the surface reading area. The position. As described above, when a position a predetermined distance before the rear end position of the reading area is set as the reference print position, the reference print position changes due to a change in the rear end position of the read area. It can be said that the relative positional relationship with the position. The reference printing position in this case is referred to as a reading area reference printing position as described as position E in FIG. On the other hand, when the trailing edge of the original document is detected and printing is performed by the printing means at a certain distance (for example, 7 mm before) from the trailing edge as in the prior art, the reference print position is the trailing edge of the original paper. Since it changes due to the change in position, it can be said to be a relative positional relationship with the rear end position of the document sheet. The reference print position in this case is referred to as a document reference print position. For example, when the printing unit is installed so as to perform printing a predetermined distance before the rear end of the back side of the original in FIG. 5, the back side reading area is the entire back side of the original paper, so that the reference print position is the original reference position. The print position is considered.
[0014]
FIG. 6 is a diagram showing the positional relationship of an embodiment of the present invention in which a reading process and a printing process are performed only on the front surface of the lowermost document sheet and the back surface of the uppermost document sheet in a multi-feed document.
In FIG. 6, two original sheets are double-fed, the surface of the lower original sheet of the double-fed original is read at the front side reading position B, and the back side of the upper original sheet of the double-fed original is the back side reading position. Read at C. The double-fed original that has been read is temporarily stopped at a position where at least a portion is sandwiched between the front-side print position E and the reverse-side print position F. Printing processing is performed on the front surface by the front surface printing unit, and at the back surface printing position F, printing processing by the back surface printing unit is performed on the back surface of the original paper on the upper side of the multifeed document. Therefore, even during document double feeding, the printing process is executed only on the further scanned surface of the scanned document paper.
The reference print position in FIG. 6 is determined in the same manner as the reference print position in the example of FIG.
[0015]
FIGS. 7A to 7C are tables showing the contents of one embodiment of a SCSI control command (Mode Select command) used for external communication and endorser control in the image reading apparatus of the present invention.
FIG. 7A is a chart showing the overall configuration of the SCSI control command, where the horizontal column represents bits and the vertical column represents bytes. In FIG. 7A, “Endorser Control” is in the 2nd byte of the third row, and the endorser is controlled by this. This function is set as an option, and is a command that is effective only for models having this function. In the default state after power-on, the endorser is turned off.
FIG. 7B is a diagram illustrating a bit configuration of a row of “Endorser Control” in FIG. As shown in FIG. 7B, 2 bits of “0” and “1” bits are used for the endorser control, and the other bits are reserved bits.
FIG. 7C is a chart showing an example of the hexadecimal code used for the endorser control in FIG. 7B. In the chart of FIG. 7C, when the code is “0H”, it is a code when the endorser is not used. “H” indicates a hexadecimal code. “1H” is a code when the endorser is used on the basis of the above document. Similarly, “2H” is a code when the endorser is used on the basis of the above-described reading area, and “3H” is reserved.
[0016]
FIG. 8 is a flowchart showing the operation of the image reading apparatus according to the first embodiment of the present invention when normal reading is performed by giving priority to the reading operation on the back side of the document and canceling the printing operation.
In step S1 of FIG. 8, the document surface image reading process at the image reading position B in FIGS. 1 and 5 is started. In step S2, the document back side image reading process at the image reading position C in FIGS. 1 and 5 is started. In step S3, it is determined whether or not the reading of the document surface has been completed. If completed (step S3: Yes), the process proceeds to step S4. If not completed (step S3: No), The process of step S3 is repeated again. In step S4, it is determined whether or not the reference print position on the document surface has reached the print position of the endorser. If the print position has been reached (step S4: Yes), the process proceeds to step S5. In S4: No), the process of step S4 is repeated again. In step S5, it is determined whether or not reading of the back side of the document has been completed. If completed (step S5: Yes), the process proceeds to step S6. If not completed (step S5: No), Proceed to step S7. In step S6, a printing process (printing operation) is performed by the endorser, and the process ends. In step S7, the printing process (printing operation) by the endorser is canceled and the process ends.
[0017]
FIG. 9 is a flowchart showing the operation of the image reading apparatus according to the second embodiment of the present invention when the printing operation is performed normally by giving priority to the printing operation and canceling the reading operation on the back side of the document.
In step S11 in FIG. 9, the document surface image reading process at the image reading position B in FIGS. 1 and 5 is started. In step S12, the document back side image reading process at the image reading position C in FIGS. 1 and 5 is started. In step S13, it is determined whether or not the reading of the document surface has been completed. If completed (step S13: Yes), the process proceeds to step S14. If not completed (step S13: No), The process of step S13 is repeated again. In step S14, it is determined whether or not the reference print position on the surface of the document has reached the print position of the endorser. If the print position has been reached (step S14: Yes), the process proceeds to step S15. In S14: No), the process of step S14 is repeated again. In step S15, it is determined whether or not reading of the back side of the document has been completed. If completed (step S15: Yes), the process proceeds to step S17. If not completed (step S15: No), Proceed to step S16. In step S16, the back side reading process at the image reading position C is cancelled. In step S17, a printing process (printing operation) is performed by the endorser, and the process ends.
[0018]
FIG. 10 shows an image according to the third embodiment of the present invention in the case where the printing operation and the document back side reading operation are normally performed by temporarily suspending (interrupting) the document back side reading operation during the printing operation period. It is a flowchart which shows operation | movement of a reader.
In step S21 in FIG. 10, the reading process of the image on the surface of the document at the image reading position B in FIGS. 1 and 5 is started. In step S22, an image reading process on the back side of the document at the image reading position C in FIGS. 1 and 5 is started. In step S23, it is determined whether or not reading of the document surface has been completed. If completed (step S23: Yes), the process proceeds to step S24. If not completed (step S23: No), The process of step S23 is repeated again. In step S24, it is determined whether or not the reference print position on the document surface has reached the print position of the endorser. If reached (step S24: Yes), the process proceeds to step S25, and if not reached (step S24). In S24: No), the process of step S24 is repeated again. In step S25, it is determined whether or not reading of the back side of the document has been completed. If completed (step S25: Yes), the process proceeds to step S26, and if not completed (step S25: No), Proceed to step S27. In step S26, a printing process (printing operation) is performed by the endorser, and the process ends. In step S27, the back side reading process at the image reading position C is temporarily stopped. In step S28, a printing process (printing operation) by an endorser is performed. In step S29, the back side reading process at the image reading position C is resumed. In step S30, it is determined whether or not the reading of the back side of the document has been completed. If the reading has been completed (step S30: Yes), the process is terminated, and the reading has not been completed (step S30: No). ) Repeats step S30.
[0019]
In the case of the third embodiment, the back side reading operation is temporarily stopped (interrupted), and the printing operation is performed during the interruption. In the reading operation, the original is conveyed by a motor (not shown) and each conveyance roller. Since the scanning is performed by doing so, the stop operation or start-up operation cannot be performed instantaneously due to the nature of the motor. In this embodiment, a stepping motor is used as a document conveying motor, and a method of gradually reducing the speed called through-down when the motor is stopped is used as a motor control method of the image reading apparatus. Using the method of gradually increasing the speed called reading processing according to the motor speed, reading processing when the motor was stopped or started up was made possible.
[0020]
In addition, in order to select the print position in the endorser of the above-described embodiments of the present invention, the SCSI Mode Select command is used as shown in FIG. Therefore, since the SCSI is a typical communication means for the digital image reading apparatus, the above-described operation can be obtained without adding a special control code communication means or the like.
[0021]
【The invention's effect】
As described above, in the image reading apparatus according to the first aspect of the present invention, when the back side original is being read when the original reaches the printing position, the back side reading operation is prioritized and the printing operation is canceled. The back side reading operation can be normally performed.
In the image reading apparatus according to the second aspect of the present invention, when the back side original is being read when the original arrives at the print position, the print operation is given priority, and the back side read operation is canceled to perform normal printing. The operation can be performed.
In the image reading apparatus according to the third aspect of the present invention, when the original reaches the print position and the back side original is being read, the back side reading operation is stopped and the printing operation which has been performed is resumed. The printing operation can be performed without canceling the operation.
In the image reading apparatus according to the fourth aspect of the present invention, when the back side original is being read when the original reaches the printing position, the back side reading operation is temporarily stopped to perform the back side reading operation. The printing operation can be performed normally without canceling.
In the image reading apparatus according to the fifth aspect of the present invention, by performing the printing process corresponding to each of the reading surfaces of the front surface and the back surface, it is possible to individually print only the surface that has been normally read in the document. Therefore, it is possible to accurately recognize the content to be re-read when the document is double-fed.
In the image reading apparatus according to the sixth aspect of the present invention, since it is possible to simultaneously print on the front surface and the back surface of the document that has been read, the time required for the printing operation can be shortened.
In the image reading apparatus according to the seventh aspect of the present invention, the SCSI, which is a general-purpose interface, is used for communication with the external apparatus. Therefore, connection to many reading apparatuses is possible without newly developing an external apparatus interface. In addition, the effects of claims 1 and 2 can be obtained.
[Brief description of the drawings]
FIG. 1 is a side view showing a schematic overall configuration of an embodiment of an image reading apparatus of the present invention.
FIG. 2 is a block diagram showing a schematic overall configuration of an embodiment of an image reading apparatus of the present invention.
FIG. 3 is a diagram illustrating a schematic configuration of a rubber belt impact type printer as a printing unit.
FIG. 4 is an enlarged view of a printing unit according to another embodiment of the present invention.
FIG. 5 is a diagram illustrating a positional relationship when a problem occurs in which printing by a printing unit is performed during execution of a document reading process by a reading unit on the back side of a document.
FIG. 6 is a diagram showing a positional relationship according to an embodiment of the present invention.
FIGS. 7A to 7C are views showing the contents of an embodiment of a SCSI control command (Mode Select command) used for external communication and endorser control in the image reading apparatus of the present invention.
FIG. 8 is a flowchart showing the operation of the image reading apparatus according to the first embodiment of the present invention.
FIG. 9 is a flowchart showing the operation of the image reading apparatus according to the second embodiment of the present invention.
FIG. 10 is a flowchart illustrating an operation of an image reading apparatus according to a third embodiment of the present invention.

Claims (4)

Into the path of the automatic document feeder, and the surface image reading means for reading an image of a document surface, and the back side image reading means for reading an image of the back side of the document, a predetermined distance apart from the reading area end portion of the document surface and a printing means for performing printing processing based printing positions, indicia-shaped means, both surfaces of the reference printing position of the document surface to the print location of the conveying path is configured to perform printing processing upon reaching In an image reading apparatus capable of reading an original,
When the reference print position of the document has reached the printing location in the transport path, if the back side image reading unit is executing the document reading process, to stop the printing processing by the printing means A characteristic image reading apparatus. Into the path of the automatic document feeder, and the surface image reading means for reading an image of a document surface, and the back side image reading means for reading an image of the back side of the document, a predetermined distance apart from the reading area end portion of the document surface and a printing means for performing printing processing based printing positions, indicia-shaped means, both surfaces of the reference printing position of the document surface to the print location of the conveying path is configured to perform printing processing upon reaching In an image reading apparatus capable of reading an original,
When the reference print position of the document has reached the printing location in the transport path, if the back side image reading unit is executing a process of reading a back surface image of the document, by the back side image reading unit An image reading apparatus that stops reading processing and executes printing processing by the printing unit. The image reading apparatus according to claim 2, wherein after the printing process is finished, the reading process by the back surface image reading unit that has been stopped is resumed. The image reading apparatus according to claim 2, wherein the stop of the reading process by the back surface image reading unit is a temporary interruption only during a period in which the printing process by the printing unit is executed.

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