JP5501007B2 - Recording apparatus and method for initializing recording apparatus - Google Patents

Description

  The present invention relates to a recording apparatus that records an image on a recording medium, and initialization of the recording apparatus, specifically, a method of initializing a conveyance roller.

  In a recording apparatus such as a printer, initialization of the recording apparatus when the recording apparatus is turned on, specifically initialization of a conveyance roller that holds and conveys a recording medium, for example, a cut sheet that has been cut into a standard size in advance. Is done. However, when the cut sheet is set in the recording apparatus while the recording apparatus is turned off, there may be a problem due to initialization of the conveyance roller when the recording apparatus is turned on. Specifically, for initialization of the transport roller, when the transport roller is driven to detect the origin position of the transport roller holding the cut sheet with a sensor, the cut sheet is held by the transport roller. Therefore, there is a case where the sheet is fed from the conveying roller. For example, when the conveyance roller is driven in the direction in which the cut sheet is conveyed in the conveyance direction of the recording medium while only the trailing edge of the cut sheet is held by the conveyance roller, the origin position of the conveyance roller is detected. Then, the cut sheet is sent out from the conveying roller. In this way, the cut sheet sent out from the conveyance roller stagnates in the conveyance path, hindering the conveyance of the subsequent cut sheet, resulting in an error in conveyance failure, or the cut sheet sent out falls from the conveyance path. Cause troubles. If there is a possibility that such a problem may occur when the transport roller is initialized, the transport roller may not be initialized, and may be initialized after waiting for the user to remove the cut sheet (for example, Patent Document 1).

JP 2001-19272 A

  However, in order to prevent the above-described problem at the time of initialization of the conveyance roller, it is necessary to prevent the cut sheet from being set in the recording apparatus when the power is turned off. Further, in the method of Patent Document 1, it is necessary to remove the cut paper set with much effort for initialization of the transport roller.

  Therefore, the present invention solves such a problem, and even when the recording apparatus is initialized after the recording medium is set to the recording apparatus when the recording apparatus is turned off, the recording medium is held by the conveyance roller. A recording apparatus and a method for initializing the recording apparatus are provided.

Recording apparatus of the present invention includes a recording unit that performs recording on a recording medium, a conveying rows La for conveying the recording medium is disposed upstream of the recording unit in the conveying direction of the recording medium, the recording medium is set to the set position is moved to the standby position upstream of the set position of the recording medium in the conveying direction by more transports the recording medium to the conveying low to La after. Recording apparatus of the present invention, further, a state determination unit that the recording medium when the power of the recording apparatus is placed to determine whether the one of the standby position to the set position, and a control unit for controlling the conveying rows La, Detecting means for detecting the origin position of the conveying roller. When the state determination means determines that the cut sheet as the recording medium is in the set position, the control unit reverses the transport roller so that the detection means detects the origin position, and the state determination means detects the cut sheet as the recording medium. When it is determined that the paper is in the standby position, the control unit rotates the transport roller in the normal direction and the detection unit detects the origin position.

  According to the present invention, when the recording apparatus is initialized, the rotation of the conveyance roller that is driven to initialize the conveyance roller is controlled so that the recording medium is held by the conveyance roller even if the conveyance roller is initialized. to continue. Accordingly, it is possible to prevent the conveyance failure of the recording medium and the recording medium from dropping from the conveyance path.

FIG. 3 is an enlarged schematic view of a main part of an embodiment of a recording apparatus according to the present invention. It is a block diagram which shows an example of a structure of a recording device. It is the expansion schematic of other embodiment of the recording device which concerns on this invention. It is a flowchart which shows the 1st and 2nd method of initialization operation | movement of a conveyance roller. 10 is a flowchart illustrating a third method of the initialization operation of the transport roller. FIG. 3 is an enlarged schematic diagram of a main part of a recording apparatus when roll paper is used as a recording medium. 6 is a flowchart of a method for performing an initialization operation of a recording apparatus in which cut paper and roll paper are used together. 12 is a flowchart of another method for performing an initialization operation of a recording apparatus in which cut paper and roll paper are used together.

  Details of embodiments of the present invention will be described below with reference to the accompanying drawings. In addition, the same number is attached | subjected to the structure which has the same function in an accompanying drawing, and the description may be abbreviate | omitted.

  FIG. 1 is an enlarged schematic view of a main part of an embodiment of a recording apparatus according to the present invention, where (a) is a schematic perspective view when a cut sheet is arranged at a set position, and (b) is (a). It is the schematic of AA 'cross section of. FIG. 1C is a schematic perspective view when a cut sheet is placed at the recording standby position, and FIG. 1D is a schematic view of the BB ′ cross section of FIG.

  The recording apparatus of the present invention has a recording unit in which a recording medium is held by a roller pair 18 of a conveying roller 11 and a pinch roller 17 and has a recording head 38 (see FIG. 2) on the downstream side of the conveying path by the rotation of the roller pair 18. The recording unit performs recording on a recording medium.

  First, a cut sheet 20 that has been cut into a standard size is set as a recording medium. A pinch roller 17 driven by the transport roller 11 is provided at a position facing the transport roller 11 across the transport path of the transport roller 11 and the cut paper 20, and the leading end of the set cut paper 20 is the transport roller. 11 and a pinch roller 17 are sandwiched and held by a roller pair 18. Note that the pinch roller 17 is positioned on the recording surface side of the cut sheet 20. The transport roller 11 is connected to a motor (not shown) and can be rotated by being driven by the motor. An encoder (not shown) that rotates in synchronization with (for example, integrally with) the transport roller 11 is provided between the motor and the transport roller 11 so that the number of rotations of the transport roller 11 can be detected.

  The cut sheet 20 can be conveyed upstream and downstream in the conveyance direction of the recording medium by rotating the conveyance roller 11, and the cut sheet 20 is managed by managing the number of rotations and the position of the conveyance roller 11 using an encoder. It is possible to manage the position of the tip. By providing a mark on the encoder so that the origin position can be detected and providing a sensor for reading the mark, the origin position of the encoder can be specified. By detecting the origin position of the encoder, the origin position of the transport roller 11 that rotates in synchronization with the encoder can be calculated. This is performed in order to correct the eccentricity of the transport roller 11. That is, it detects how far the portion of the surface of the transport roller 11 (contact surface with the recording medium) that is actually in contact with the cut sheet 20 is away from the origin position of the transport roller 11. When the amount to which the cut sheet 20 is to be transported is defined in advance by the rotation amount of the transport roller 11, the portion that is actually in contact with the cut sheet 20 and the origin position between the specified rotation amount and the origin position. Add or subtract intervals between. Thereby, the drive amount of the transport roller 11 for obtaining the desired transport amount of the cut paper 20 can be obtained. As described above, in order to realize the desired conveyance amount of the cut sheet 20, it is necessary to obtain the origin position of the conveyance roller 11 and to correct the driving amount based on the origin position. The detection of the origin position of the encoder and the correction of the driving amount of the transport roller 11 are performed when the recording apparatus is turned on. Further, when the origin position is detected while the transport roller 11 is being driven, the drive amount of the transport roller 11 may be corrected as needed. Here, the driving of the conveying roller 11 (details will be described later) and the calculation of the origin position when the recording apparatus is initialized, that is, immediately after the recording apparatus is turned on, are referred to as “initializing operation” of the conveying roller 11.

  The pinch roller 17 is connected to a lever (not shown), and by operating the lever, the pinch roller 12 is moved in a direction opposite to the recording surface, that is, upward in the drawing, and brought into contact with the transport roller 11 or the cut sheet 20. It is possible to make it free. The cut paper 20 can be freely moved by operating the lever from the state in which the cut paper 20 is held by the roller pair 18 to bring the pinch roller 17 into a free state. As a result, the cut paper 20 can be removed or attached by the user arbitrarily operating the lever.

  A recording head 38 (see FIG. 2) not shown in FIG. 1 is mounted, and a carriage 12 that operates in the width direction of the cut sheet 20 is provided in a recording unit on the downstream side of the conveying roller 11. Further, the platen 15 that supports the cut sheet 20 is provided on the upstream side and the downstream side of the transport roller 11. Recording is performed by ejecting ink from a recording head (not shown) mounted on the carriage 12 and adhering it to the cut paper 20 supported by the platen 15.

  The carriage 12 is connected to a motor (not shown), and an encoder (not shown) is attached between the carriage 12 and the motor so that the position of the cut sheet 20 in the width direction can be detected. Further, a sensor unit 13 is attached to the carriage 12. The sensor unit 13 includes an optical sensor.

  Light is emitted from the light emitting element of the optical sensor onto the cut paper 20 and the platen 15, and the reflected light from the platen 15 and the cut paper 20 is received. The difference in the amount of received light makes it possible to measure the leading edge position of the cut sheet 20, the side edge position in the width direction, the thickness, the color, and the like. Further, by using the encoder of the carriage 12, it is possible to calculate the end position in the width direction of the cut sheet 20 from the position in the width direction of the cut sheet 20 read by the sensor unit 13. Similarly, the carriage 12 is stopped at a position where the sensor unit 13 is on the conveyance path of the cut sheet 20, and the conveyance roller 11 is driven to convey the cut sheet 20. Accordingly, the front end of the cut sheet 20 can be detected by the sensor unit 13 and the front end position of the cut sheet 20 can be calculated from the encoder of the transport roller 11. In addition, a recording medium presence sensor 14 which is an optical sensor is provided on the upstream side of the conveyance roller 11 which is a conveyance path of the cut sheet 20, and the recording medium presence sensor 14 cuts the recording medium presence sensor 14 on the recording medium presence sensor 14. Whether or not the paper 20 is present can be detected.

  Further, on the platen 15, a recording medium side end alignment line 16 and a cut sheet rear end alignment line 21 are drawn on the platen 15 for specifying a position where the user attaches the cut sheet 20.

  FIG. 2 is a block diagram illustrating an example of the configuration of the recording apparatus. The control unit 30 controls the entire recording apparatus. The I / F (interface) unit 34 is connected to a host computer (not shown). A command and recording data for recording are sent from the host computer, and the recording apparatus operates in response to the command to record the recording data on the recording medium. Further, by sending the information of the recording device to the host computer, it is possible to notify the user of the state of the recording device, and thus it is possible to notify the user of the recording medium and the recording state. In general, a Centronics, USB (Universal Serial Bus) interface, or the like is used as the I / F unit 34.

  The image processing unit 31 performs γ correction, color processing, enlargement / reduction processing, binarization, etc. on the recording data (multi-valued image data) sent from the I / F unit 34. The image processing unit 31 includes a memory and an ASIC (Application Specific Integrated Circuit). Further, it includes a DSP (Digital Signal Processor), RISC (Reduced Instruction Set Computer), and the like. However, in order to reduce the cost of the recording apparatus, the image processing unit 31 may be simplified by configuring the recording data to be processed by a driver on the host computer side or a RIP (Raster Image Processor). The recording data developed into a dot pattern at the final stage of processing in the image processing unit 31 is temporarily stored in the memory unit 36.

  The memory unit 36 is composed of a memory for one band or more necessary for recording by a recording head (not shown) scanning once in the main scanning direction. The memory unit 36 is also used for storing information of the recording apparatus main body such as information on the recording medium. Information on the recording medium, such as the end position of the recording medium, is stored at any time, and is stored immediately before the power is turned off, for example, the front end position of the recording medium. Whether the recording medium is a cut sheet 20 or a roll paper described later, and whether a sensor detection function off mode described later or not is stored when the power is turned off. Writing or reading of recording data to / from the memory unit 36 is performed by the memory controller 35 under the control of the DSP or RISC of the image processing unit 31, and an address signal and a writing or reading timing signal are generated for the memory unit 36. Is done. The recording data read from the memory unit 36 is output to the head controller 37 in synchronization with a read signal from the head controller 37.

  The head controller 37 generates an ink ejection timing signal and heat pulse from the recording head 38 based on the control of the control unit 30 based on a signal from a linear scale (not shown). The recording head 38 is provided corresponding to each color ink, and a heater (not shown) is driven by the control unit 30 and the head controller 37 to generate heat and discharge the ink, thereby recording an image on a recording medium.

  The recording head 38 is actually mounted on the carriage 12 of the mechanical drive unit 33. The mechanical drive unit 33 includes a drive unit including a carriage 12 to which a recording head 38 is attached, a motor that operates the carriage 12 and the recording medium, an encoder that detects rotation of the motor, a recording medium presence sensor 14, and the like. Further, it also has a recovery unit section that recovers ink clogging of the recording head. A value detected by a motor or an encoder in the mechanical drive unit 33 is calculated and controlled by the control unit 30. The position of the origin of the transport roller 11 is also calculated by these and the position is specified.

  Next, the initialization operation of the transport roller when the cut sheet 20 is used as the recording medium will be described.

  An unillustrated lever is operated so that the pinch roller 17 is in a free state, the rear end portion of the cut paper 20 is inserted between the roller pair 18, and the rear end portion of the cut paper 20 is drawn on the platen 15. Align with the rear end alignment line 21. Further, the side edge of the cut paper 20 is aligned with the recording medium side edge alignment line 16, the lever is operated to close the pinch roller 17, and the attachment of the cut paper 20 is completed (FIGS. 1A and 1B). )reference). The position of the cut sheet 20 in this state is set as a “set position”.

  After completion of the attachment of the cut sheet 20, the carriage 12 and the transport roller 11 are operated to detect the side edge position of the cut sheet 20, the skew detection, the leading end detection of the cut sheet 20, and the like. When the recording medium is the cut sheet 20, the conveyance roller 11 is driven (forward rotation direction) so that the cut sheet 20 moves downstream, and the rear end position of the cut sheet 20 is detected by the recording medium presence sensor 14. Thereafter, the transport roller 11 is driven (reverse direction) so that the cut sheet 20 moves upstream, and the sensor unit 13 detects the leading end position of the cut sheet 20 to measure the length of the cut sheet 20. After the operation is completed, the vicinity of the leading end of the cut sheet 20 is moved to a recording standby position held by the roller pair 18 to enter a recording standby state (see FIGS. 1C and 1D). The position of the cut sheet 20 in this state is referred to as a “recording standby position”.

  Usually, the recording standby position of the cut sheet 20 is a position where the leading end of the cut sheet 20 has moved about 8 mm to the recording unit side (downstream side) from the position where the pair of rollers 18 is held. When turning off the power, the power is turned off at this position. The power can be turned on in this state, but when the cut sheet 20 is placed at the set position while the power is turned off, the following problems have conventionally occurred. When the power is turned on, if the transport roller 11 is rotated in the forward rotation direction (rotation direction in which the recording medium is transported in the downstream direction) and the origin position of the encoder is detected, the cut sheet 20 is transported too far downstream. In some cases, the trailing edge of the cut sheet 20 comes off the roller pair 18. Hereinafter, the fact that the cut sheet 20 is detached from the roller pair 18 during the initialization operation of the conveying roller 11 and is not in the holding state is referred to as “missing”. Therefore, when the cut sheet 20 is present at the set position, the conveyance roller 11 is detected by rotating the conveyance roller 11 in the reverse direction (the rotation direction in which the recording medium is conveyed in the upstream direction) and detecting the origin position of the encoder. It is possible to prevent the cut sheet 20 from falling out during the initialization operation.

  However, when the cut sheet 20 is disposed at the recording standby position, if the transport roller 11 is rotated in the reverse direction, the recording medium may be pulled out to the upstream side.

  Therefore, in the present invention, it is determined whether the transport roller 11 is driven forward or backward, and an initialization operation is performed. A specific method (first method) will be described below. FIG. 3 is a flowchart showing a first method of the initialization operation of the transport roller 11.

  In the present invention, first, it is checked whether the cut sheet 20 is in the set position or the recording standby position (determination of the state of the cut sheet 20). Normally, when the power is on, the power cannot be turned off in a state where the cut sheet 20 is located at the set position, and the power is automatically turned off after the cut sheet 20 is automatically moved to the recording standby position. For this reason, when the cut sheet 20 has already been moved to the recording standby position when the power is turned off, the operation of moving the cut sheet 20 to the recording standby position is not performed when the power is turned on. When the power is turned off, the cut sheet 20 has been moved to the recording standby position, and when the power is turned on, the recording medium presence / absence sensor 14 (which serves as a state determination unit for the cut sheet 20) determines that there is a recording medium. Then, it is determined that the cut sheet 20 is in the recording standby position (see FIGS. 1C and 1D).

  Even if it is stored that the cut sheet 20 is not arranged at either the set position or the recording standby position when the power is turned off, the recording medium presence sensor 14 detects the recording medium when the power is turned on. It may be judged that there is. In that case, it is determined that the cut sheet 20 is placed at the set position (see FIGS. 1A and 1B), assuming that the user has attached the cut sheet 20 to the recording apparatus while the power is turned off. To do. If the cut sheet 20 is always discharged from the recording apparatus when the power is turned off, this process may be omitted and it may be determined that the cut sheet 20 is disposed at the set position.

  As described above, when the power is turned on (S400), the position of the cut sheet 20 is determined by the state determination of the cut sheet 20 (S403). If it is determined that the position of the cut sheet 20 is the recording standby position, based on the determination result, the transport roller 11 is driven to rotate forward to initialize the transport roller 11 (origin position detection and drive amount correction) (S402). ), The initialization operation of the conveying roller 11 is finished (S405). On the other hand, if it is determined that the position of the cut sheet 20 is the set position, the rotation direction of the transport roller 11 is reversed and initialized (origin position detection and drive amount correction) (S404), and the transport roller 11 is initialized. Is finished (S405).

  As described above, by appropriately selecting one of the normal rotation driving and the reverse rotation driving according to the position of the conveying roller 11, it is possible to prevent the cut sheet 20 from being lost due to the initialization operation of the paper discharge roller 11.

  Note that another sensor or the like may be provided to determine whether the position of the cut sheet 20 is the set position or the recording standby position. As an example, another method (second method) in which it is determined whether the conveyance roller 11 is driven to rotate forward or reversely and the initialization operation is performed will be described.

  For example, a recording medium presence / absence sensor (cut sheet 20 state determination means) is added to the recording unit side (downstream side) of the conveyance roller 11. If it is determined by the downstream recording medium presence sensor that there is no recording medium, it can be determined that the cut sheet 20 is in the recording standby position. When it is determined by the downstream recording medium presence sensor that there is a recording medium, it is possible to determine that the cut sheet 20 is at the set position.

  As another method, a recording medium presence / absence sensor (cut sheet 20 state determining means) is added upstream of the cut sheet rear end alignment line 21. When the cut sheet 20 is at the set position, it is possible to determine that the cut sheet 20 is at the set position because the upstream recording medium presence sensor determines that there is no recording medium.

  The flowchart is the same as the first method shown in FIG. When the power is turned on (S400), the position of the cut sheet 20 is determined by the state determination of the cut sheet 20 (S403). If it is determined that the cut sheet 20 is in the set position, the conveyance roller 11 is driven in the reverse direction to initialize (origin position detection and drive amount correction) (S404), and the initialization operation of the conveyance roller 11 is completed (S404). S405). On the other hand, when it is determined that the cut sheet 20 is in the recording standby position, the transport roller 11 is driven in the forward direction to initialize (origin position detection and drive amount correction) (S402), and the transport roller 11 is initialized. Is finished (S405).

  A description will be given of still another method (third method) in which it is determined whether the conveyance roller 11 is driven to rotate forward or reversely, and the initialization operation is performed. FIG. 4 is a flowchart showing a third method of the initialization operation of the transport roller 11.

  When the power is turned on (S500), the transport roller 11 is rotated in the forward rotation direction (S501). While the conveyance roller 11 is rotating, the recording medium presence sensor 14 (which serves as a recording medium state determination unit) determines the presence or absence of a recording medium (S502). If there is a recording medium, the origin of the conveyance roller 11 is detected (S503). Check whether or not.

  If the origin of the transport roller 11 has been detected (the transport roller 11 has been initialized), the transport roller 11 is stopped (S504). If necessary, the transport roller 11 is returned to the original position, and the transport roller 11 is initialized. The conversion operation is terminated (S507). If the origin is not detected by the origin detection (S503), the process returns to the determination of the presence / absence of the recording medium by the recording medium presence / absence sensor 14 again (S502), and has the origin been detected while the transport roller 11 is rotating forward? Repeat the check for no. In the above description, the origin detection (S503) is performed after the recording medium presence sensor 14 determines the presence or absence of the recording medium (S502). However, even if the recording medium presence / absence sensor 14 determines the presence / absence of the recording medium (S502) after the origin detection (S503), the operation is the same, so the order may be changed.

  When it is determined that there is no recording medium in the determination by the recording medium presence sensor 14 (S502), the driving of the transport roller 11 in the normal rotation direction is stopped (S505). Thereby, the rear end of the cut sheet 20 does not come off from the roller pair 18, and the held state can be maintained. However, since the origin detection is not completed, the transport roller 11 is rotated in the reverse direction so that the cut sheet 20 moved downstream from the set position does not come out of the roller pair 18 (S506), and the cut sheet 20 is moved upstream. Move to the side to detect the origin. When the origin detection is completed, the conveyance roller 11 is returned to the original position if necessary, and the initialization operation of the conveyance roller 11 is ended (S507).

  As described above, it is possible to prevent the recording medium from coming off from the roller pair 18 by reversing the rotation direction of the transport roller 11 and reinitializing the transport roller 11.

  In any of the above methods, when the recording medium is the cut paper 20 and is in the set position, the cut paper 20 is moved to the recording standby position after the initialization operation of the transport roller 11 is completed.

  As described above, by performing the initialization operation of the recording apparatus of the present invention, it is possible to maintain the state in which the cut sheet 20 is held by the conveyance roller 11.

  In order to enable the use of a recording medium such as Japanese paper having a non-uniform end shape as the cut paper 20, the detection operation of the end of the cut paper 20 in the initialization operation of the transport roller 11 as described above is omitted. It is also possible to provide a mode in which necessary values are input from the operation panel. Hereinafter, this mode is referred to as “sensor detection function off mode”. In this case, since the leading edge of the cut sheet 20 is indefinite, the cut sheet 20 cannot be moved from the set position to the recording standby position. Therefore, since the user needs to attach the cut sheet 20 to the recording start position, the set position of the cut sheet 20 in the sensor detection function off mode is the same as the recording standby position. In this case, when the transport roller 11 is rotated in the reverse direction, the cut sheet 20 is pulled out to the upstream side. Therefore, the transport roller 11 needs to be initialized by rotating in the forward direction.

  When the sensor detection function off mode is applied, as described above, the cut sheet 20 is directly placed at the recording standby position by the user. Therefore, when it is determined that the cut sheet 20 is disposed at the set position while the power is turned off, and the sensor detection function is in the off mode, the cut sheet 20 is disposed at the recording standby position. to decide.

  In the recording apparatus described above, the recording medium can be used not only with the cut paper 20 but also with the roll paper 10 or with only the roll paper 10. A case where the roll paper 10 is used as a recording medium will be described with reference to FIG.

  FIG. 5 is an enlarged schematic view of the main part of the recording apparatus when the roll paper 10 is used as the recording medium. (A) is a schematic perspective view when the roll paper 10 is disposed at the set position, (b) is a schematic diagram of the CC ′ cross section of (a), and (c) is a schematic diagram of the roll paper 10 disposed at the recording standby position. (D) is the schematic of the DD 'cross section of (c). Since the basic configuration is the same as that when the cut sheet 20 is used as the recording medium, the description of the same configuration is omitted.

  As a recording medium, a continuous strip-shaped roll paper 10 wound in a roll shape is set. When the cut paper 20 and the roll paper 10 are not used together, it is not necessary to provide the cut paper rear end alignment line 21 on the platen 15 in order to specify the position where the user attaches the cut paper 20. Further, it is not necessary to perform detection by the recording medium presence sensor 14.

  When the roll paper 10 is attached, the roll paper 10 wound in a roll shape is set, and the user operates the lever (not shown) to bring the pinch roller 17 into a free state. Then, the leading end is pulled out from the roll paper 10 wound in a roll shape, and the lever is operated to close the pinch roller 17 with the side end of the roll paper 10 aligned with the line 16 to complete the installation of the roll paper 10. (See FIGS. 5A and 5B).

  As in the case where the recording medium is cut paper, after the roll paper 10 has been attached, the carriage 12 and the transport roller 11 are operated as described above to detect the side edge position of the roll paper 10, skew detection, and The leading edge of the roll paper 10 is detected. After the end of these operations, the leading end position of the roll paper 10 is moved to a standby position for waiting for the start of recording to enter a recording standby state (see FIGS. 5C and 5D). The position of the roll paper 10 in this state is referred to as a “recording standby position”.

  As shown in FIGS. 5C and 5D, the normal recording standby position is a position where the leading end of the roll paper 10 is moved about 8 mm from the position held by the roller pair 18 to the recording unit side (downstream side). Become. When turning off the power, the power is turned off at this position. When the power is turned on, the conveyance roller 11 is rotated in the forward direction as indicated by the arrow in FIG. 5B, and the origin position of the conveyance roller 11 is detected by detecting the origin of the encoder connected to the conveyance roller 11. To detect. After the detection, the roll paper 10 is returned to the original position corresponding to the carry amount, and the initialization operation of the carry roller 11 is finished.

  As described above, when the recording medium is the roll paper 10, the state where the roll paper 10 is held by the conveyance roller 11 can be maintained by rotating the conveyance roller 11 in the normal rotation direction. Therefore, it is not necessary to determine whether the transport roller 11 is driven to rotate forward or reversely in the initialization operation of the recording apparatus. However, when both the cut paper 20 and the roll paper 10 can be used as described above, the initialization operation in the case of the cut paper 20 described above and the initialization operation in the case of the roll paper 10 described below. Must be properly used.

  As described above, when the cut sheet 20 and the roll paper 10 are used in combination, when performing the initialization operation of the recording apparatus, it is determined whether the conveyance roller 11 is driven to rotate forward or reversely, and the initialization operation is performed. The method is described below. FIG. 6 shows a flowchart of a method for performing the initialization operation of the recording apparatus in which the cut paper 20 and the roll paper 10 are used together.

  This method is substantially the same as the first method (see FIG. 3) of the initialization operation of the recording apparatus using only the cut paper 20 described above, but after turning on the power, whether the recording medium is the roll paper 10 or the cut paper. 20 is different (S401).

  In this method, a recording medium switching button is provided in the recording apparatus, and the user selects the roll paper mode or the cut paper mode, that is, whether the recording medium is the roll paper 10 or the cut paper 20 with the recording medium switching button ( It becomes the judgment means of the recording medium).

  When the power is turned on (S400), the type of the recording medium is discriminated next. Specifically, the recording medium switching button determines whether the currently arranged recording medium is the roll paper 10 or the cut paper 20 (S401).

  When the power is turned off, the user selects the roll paper mode or the cut paper mode, and reads out from the storage area which mode was selected when the power is turned on. It is determined whether the roll paper 10 or the cut paper 20 is attached to the recording apparatus depending on whether the read mode is the roll paper mode or the cut paper mode (S401).

  When it is determined that the recording medium is the roll paper 10 by the determination by the recording medium determination unit (S401), the state shown in FIG. 2 is determined, so that the conveying roller 11 is driven forward and initialized (S402). The initialization operation of the transport roller 11 is finished (S405).

  A first method for determining whether the conveyance roller 11 is driven to rotate forward or reversely when the recording medium is the cut sheet 20 in the determination of the recording medium (S401). The conveying roller 11 is initialized by the same method (see FIG. 3).

  In this description, an example of a method for making these determinations without providing a new configuration is given. Therefore, when the cut sheet 20 is attached in the roll paper mode, there is a discrepancy between the mode type and the recording medium type. May occur, and the recording medium may not be determined correctly. Therefore, as another means, a sensor may be additionally provided to determine whether the recording medium is the roll paper 10 or the cut paper 20.

  As an example, when the cut paper 20 and the roll paper 10 are used in combination, the initialization operation of the recording apparatus is determined by determining whether the conveyance roller 11 is driven to rotate forward or reversely. Another method will be described. FIG. 7 shows a flowchart of another method for performing the initialization operation of the recording apparatus in which cut paper and roll paper are used together.

  This method is almost the same as the second method of the initialization operation of the recording apparatus using only the cut sheet 20 described above. After turning on the power, it is determined whether the recording medium is the roll paper 10 or the cut paper 20, and if the recording medium is the cut paper 20, it is determined whether the recording medium is located at the set position or the recording standby position. (S411).

  A recording medium presence / absence sensor (also serving as a recording medium determination unit and a cut sheet 20 state determination unit) is additionally provided on the recording unit side (downstream side) of the conveyance roller 11. When it is determined by the downstream recording medium presence sensor that there is no recording medium, the recording medium is the roll paper 10 or the cut paper 20, and it can be determined that the recording standby position is set. When the downstream recording medium presence / absence sensor determines that there is a recording medium, it can be determined that the recording medium is the cut sheet 20 and is in the set position.

  As another method, a recording medium presence / absence sensor (also serving as a recording medium determination unit and a cut sheet 20 state determination unit) is additionally provided on the upstream side of the cut sheet rear end alignment line 21. Only when the cut sheet 20 is in the set position, the upstream recording medium presence sensor determines that there is no recording medium. Therefore, it is possible to determine that the recording medium is the cut sheet 20 and is in the set position.

  When the power is turned on (S400), if the recording medium is determined to be the roll paper 10 or the cut paper 20 and is in the recording standby position by the determination of the recording medium and the state of the cut paper 20 (S411), The conveyance roller 11 is driven in the normal rotation direction to be initialized (S402). Thereafter, the initialization operation of the transport roller 11 is finished (S405). Similarly, when it is determined that the recording medium is the cut sheet 20 and is in the set position, the conveying roller 11 is driven in the reverse direction to initialize (S404), and the initialization operation of the conveying roller 11 is ended (S405). .

  A third method for determining whether the conveyance roller 11 is driven to rotate forward or reversely when the recording medium is the cut sheet 20 can also be applied. In this case, since the conveyance roller 11 is driven in the forward rotation direction after the power is turned on, when the recording medium is the roll paper 10, the initialization operation of the conveyance roller 11 is performed while being held by the conveyance roller 11. It can be carried out. When the recording medium is the cut sheet 20, the third method described above is performed.

10 roll paper (recording medium)
11 Conveying roller 14 Recording medium presence / absence sensor (state judging means)
20 cut paper (recording medium)

Claims (6)

A recording unit that records on the recording medium; and a conveyance roller that is arranged upstream of the recording unit in the conveyance direction of the recording medium and conveys the recording medium. After the recording medium is set at a set position, In the recording apparatus that moves the recording medium to a standby position upstream of the set position in the conveying direction by conveying the recording medium,
State determination means for determining whether the recording medium is in the set position or the standby position when the power of the recording apparatus is turned on;
A control unit for controlling the conveying roller;
Detecting means for detecting an origin position of the transport roller,
It said state determining means, when said cut sheet as a recording medium is determined to be in the set position, the control unit detects the detection means the original position by reversing the conveyance row La,
It said state determining means, said when the cut sheet as a recording medium is determined to be in the standby position, the control unit that the detecting means is rotated forward the transport row La detects the origin position A recording apparatus. A recording unit that records on the recording medium; and a conveyance roller that is arranged upstream of the recording unit in the conveyance direction of the recording medium and conveys the recording medium. After the recording medium is set at a set position, In the recording apparatus that moves the recording medium to a standby position upstream of the set position in the conveying direction by conveying the recording medium,
State determination means for determining whether the recording medium is in the set position or the standby position when the power of the recording apparatus is turned on;
A control unit for controlling the conveying roller;
Detecting means for detecting an origin position of the conveying roller;
The recording medium is closed and the recording medium determining means for determining whether a cut sheet or roll paper, and
Wherein when the recording medium determining unit determines that the recording medium is roll paper, said control unit detects the detection means the original position by forward the transport row La,
The recording medium determining unit the recording medium is determined to be the cut sheet, and when the state determining means determines that the cut sheet is located at the set position, the control unit reverses the conveying row La The detecting means detects the origin position ,
The recording medium determining unit the recording medium is determined to be a cut sheet, and when the state determining means determines that the cut sheet is in the standby position, the control unit forward the transport row La The recording apparatus is characterized in that the detection means detects the origin position . Line indicating the set position is provided, the recording apparatus according to claim 1 or 2. The carriage sensor unit capable of detecting said recording medium mounted on the recording section is provided, the recording apparatus according to any one of claims 1 to 3. A recording unit that records on the recording medium; and a conveyance roller that is arranged upstream of the recording unit in the conveyance direction of the recording medium and conveys the recording medium. After the recording medium is set at a set position, A method of initializing a recording apparatus that moves the recording medium to a standby position upstream of the set position in the conveying direction by conveying the recording medium,
Determining whether the recording medium is in the set position or the standby position when the recording apparatus is turned on;
When the cut sheet which is the recording medium is determined to be in the set position, by reversing the conveyance row La, and detects the origin position of the conveying roller,
When the cut sheet is determined to be in the standby position, by forward said transport rollers to detect the origin position of the conveyance rollers, the method of initializing the record device. A recording unit that records on the recording medium; and a conveyance roller that is arranged upstream of the recording unit in the conveyance direction of the recording medium and conveys the recording medium. After the recording medium is set at a set position, A method of initializing a recording apparatus that moves the recording medium to a standby position upstream of the set position in the conveying direction by conveying the recording medium,
When the recording apparatus is turned on , after determining whether the recording medium is cut paper or roll paper, it is determined whether the recording medium is in the set position or the standby position. And
If the recording medium is determined to the roll paper, thereby forward the transport row La regardless judgment in the step of determining said position,
The recording medium is the cut sheet, if it is determined that the set position, reverse the said conveying rows la,
The recording medium is the cut sheet, if it is determined to be in the standby position, is rotated forward the transport rollers, the method of initializing the record device.

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