JP2008062437A - Recording apparatus, and its controlling method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a recording apparatus which can increase the printing speed with a high carrying precision, and to provide its controlling method. <P>SOLUTION: A printer 1 is equipped with a paper-feed driving mechanism 33 which feeds out printing papers P, a carrying driving mechanism 34 which carries the printing papers P having been fed out, and a printing processing section which applies a printing to the printing papers P being carried. In the printer 1, the carrying driving mechanism 34 is constituted of a pair of approachable/separable carrying rollers 23 and 24, a pair of paper discharging rollers 25 and 26, and a carrying driving motor. In this case, the pair of carrying rollers 23 and 24 are arranged on the upstream side of the recording head 22 of the printing process section, and carry the printing papers P while pinching them. The pair of paper discharging rollers 25 and 26 are arranged on the downstream side of the recording head 22, and discharge the printing papers P while pinching them. The carrying driving motor rotate-drives the carrying rollers 23 and 24 and the paper discharging rollers 25 and 26 while synchronizing them. The carrying rollers 23 and 24 are separated from each other at the point where the rear end of the printing paper P under printing has reached a right before position of the pinching position by the carrying rollers 23 and 24. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a recording apparatus that prints characters and images on a sheet-like medium such as paper and a control method thereof.

2. Description of the Related Art Generally, a recording apparatus such as a printer has a structure in which sheets are fed one by one, conveyed to a print processing unit by a recording head, and then a character or an image is printed on the sheet by a recording head and discharged. .
In addition, while printing is being performed while a sheet is being conveyed by a conveyance drive mechanism including a conveyance roller and a discharge roller, printing on the sheet is performed by supplying and preparing the next sheet using a paper feed drive mechanism. Although the speed is increased, in this case, when the next sheet enters the conveyance roller of the conveyance drive mechanism, a load fluctuation occurs, the conveyance accuracy of the sheet decreases, and the print quality decreases. .
For this reason, a technique is known in which a load fluctuation due to the supply of the next sheet is predicted, and a driving motor of the conveyance driving mechanism is controlled in accordance with the load fluctuation, thereby suppressing a decrease in sheet conveyance accuracy (for example, Patent Document 1).
JP 2002-144546 A

By the way, the load fluctuation of the drive motor also occurs when the trailing edge of the sheet comes out between the conveyance rollers. Therefore, the decrease in the conveyance accuracy due to the load fluctuation can be suppressed only by the control of the drive motor when the next sheet is supplied. It was difficult.
In addition, if the sliding load such as shaft loss in the drive unit such as the bearing of the transport drive mechanism increases, the influence of the load fluctuation increases, and it is difficult to sufficiently suppress the decrease in transport accuracy only by controlling the drive motor. End up.
In addition, when the drive motor generates heat due to continuous printing, torque reduction occurs, and the reduction in the conveyance accuracy is still insufficiently suppressed.
Furthermore, when controlling the drive motor, control parameters corresponding to various types of paper such as thickness are required, and the versatility is low, and it is difficult to manage the timing for controlling the drive motor in accordance with the occurrence of load fluctuations. On the contrary, the conveyance accuracy may be reduced due to a shift in the timing of control.

  The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a recording apparatus capable of increasing the printing speed with high conveyance accuracy and a control method therefor.

  In order to achieve the above object, a recording apparatus according to the present invention includes a paper feed drive mechanism that feeds a sheet-like medium, a transport drive mechanism that transports a medium sent from the paper feed drive mechanism, and a transport drive mechanism. A printing processing unit that performs printing on the medium conveyed in the above-described manner, and the conveyance driving mechanism is disposed on the upstream side of the printing processing unit, and a pair of contacting and separating conveyance rollers that convey the medium while sandwiching the medium. A pair of discharge rollers disposed downstream of the print processing unit and discharging the medium while sandwiching the medium; and a conveyance drive motor that rotates the conveyance roller and the discharge roller in synchronization with each other. It is characterized by that.

According to the recording apparatus having this configuration, the conveyance roller, which is rotationally driven in synchronization with the conveyance drive motor, and the conveyance roller among the discharge rollers can be brought into contact with and separated from each other. By releasing the nipping state by separating the conveying roller before reaching the roller, it is possible to eliminate a load fluctuation on the conveying driving motor when the nipped medium is sent out from the conveying roller.
In addition, when the next medium is fed between the conveyance rollers by separating the conveyance roller before the next medium reaches the conveyance roller while being printed on the medium while being conveyed by the discharge roller. It is possible to eliminate the load fluctuation to the transport drive motor.
As a result, it is possible to reduce fluctuations in the conveyance state of the medium being printed due to fluctuations in the load of the conveyance drive motor, and it is possible to perform printing with high quality, in particular, printing on thick media with high definition. In some cases.

  Further, the control method of the recording apparatus of the present invention is transported by a paper feed drive mechanism that feeds out a sheet-like medium, a transport drive mechanism that transports the medium sent out from the paper feed drive mechanism, and the transport drive mechanism. A print processing unit that performs printing on a medium to be printed, and the transport driving mechanism is disposed on the upstream side of the print processing unit, and a pair of contact rollers that are transportable while sandwiching the medium, and the printing Control of a recording apparatus provided with a pair of discharge rollers disposed downstream of the processing unit and discharging the medium while sandwiching the medium, and a conveyance drive motor that rotates the conveyance roller and the discharge roller in synchronization with each other The method is characterized in that the transport rollers are separated from each other when the trailing edge of the medium being printed by the print processing unit reaches the nipping position by the transport rollers or the position immediately before the nipping position.

According to this control method of the recording apparatus, the conveyance rollers are separated from each other when the trailing edge of the medium being printed reaches the nipping position by the conveyance roller or the position just before the nipping position, so that the nipped medium is sent out from the conveyance roller. It is possible to eliminate the load fluctuations on the transport drive motor during the process.
As a result, it is possible to reduce fluctuations in the conveyance state of the medium being printed due to fluctuations in the load of the conveyance drive motor, and it is possible to perform printing with high quality, in particular, printing on thick media with high definition. be able to.

Further, it is preferable that the medium to be printed next is fed immediately after the preceding medium by the paper feed driving mechanism after the conveyance rollers are separated from each other.
As described above, since the next medium is fed immediately after the previous medium, the printing speed during continuous printing can be increased, and the processing time can be shortened. In addition, since the next medium is fed after the conveyance rollers are separated from each other, fluctuations in the load on the conveyance drive motor when the next medium is fed between the conveyance rollers can be eliminated.
As a result, it is possible to reduce fluctuations in the conveyance state of the medium being printed due to fluctuations in the load of the conveyance drive motor, and it is possible to perform printing with high quality. Continuous printing is possible.

Further, when the leading edge of the next medium reaches the cueing position just before or just before the printing position by the printing processing unit on the downstream side of the transport roller, the paper feeding operation by the paper feeding driving mechanism is stopped. It is desirable.
In this way, when the leading edge of the next medium reaches the cueing position just before or just before the printing position by the printing processing unit on the downstream side of the transport roller, the paper feeding operation by the paper feeding drive mechanism is stopped. Thus, after printing on the previous medium, printing on the next medium can be started quickly, and the processing time for continuous printing can be further shortened.

In addition, it is preferable that after the printing of the previous medium is finished, the conveyance roller is brought close to the next medium to be sandwiched.
As described above, after the printing of the previous medium is completed, the transport roller is brought close to the next medium so that the printing on the next medium can be started quickly after the printing of the previous medium is completed. Thus, it is possible to eliminate the load fluctuation on the transport drive motor of the transport drive mechanism during printing on the medium, and it is possible to print on the previous medium with high quality.

Hereinafter, a recording apparatus and a control method thereof according to an embodiment of the present invention will be described in detail with reference to the drawings.
In the present embodiment, a printer such as an ink jet printer that performs print processing is exemplified as the recording apparatus. Examples of the recording apparatus of the present invention include a copying machine or a facsimile in addition to a printer. In this embodiment, a sheet is used as an example of a sheet-like medium on which printing is performed.

FIG. 1 is an external perspective view of an embodiment of a printer according to the present invention, and FIG. 2 is a side sectional view schematically showing the inside of the printer shown in FIG.
A printer (recording apparatus) 1 according to the present embodiment is a front-feed / discharge-type business-use inkjet printer, and as shown in FIG. 1, an apparatus case 4 including a lower case 3 and an upper case 2. A substantially box-shaped paper cassette 5 loaded with paper, which is a sheet-like medium, is detachably inserted in the center of the front surface of the paper.

  Further, a paper discharge tray 6 for receiving the printed paper is provided so as to cover the open top portion of the paper cassette 5. Further, on both sides of the front surface of the device case 4, a display unit 7 and an operation unit 8 for displaying an operation state are provided.

  As shown in FIG. 2, in the apparatus case 4, a pick-up roller provided at the tip of a frame 12 that is swingably supported above the paper P of the paper cassette 5 loaded in the cassette housing 11. 13 is arranged. The pickup roller 13 is movable in the vertical direction. When the paper is sent out, the pickup roller 13 moves downward and comes into contact with the uppermost paper P of the paper cassette 5, thereby causing the uppermost paper P to move. Are fed back one by one and fed between a paper feed roller 14 and a retard roller 15 provided on the rear side.

  The paper feed roller 14 and the retard roller 15 feed the fed paper P backward while sandwiching the paper P, and the paper P is folded back upward in an arc shape behind the paper feed roller 14 and the retard roller 15. An arcuate conveyance path 16 that conveys the sheet P and a linear conveyance path 17 that conveys the sheet P linearly from the arcuate conveyance path 16 to the front side of the printer 1 and discharges the sheet P onto the paper discharge tray 6 are provided.

An intermediate roller 18 is provided inside the arcuate conveyance path 16, and the sheet P fed by the paper feed roller 14 and the retard roller 15 is moved along the arcuate conveyance path 16 by the intermediate roller 18. It is sent to the linear conveyance path 17.
In the middle of the linear conveyance path 17, a reciprocating movement is provided along a plurality of guide shafts 21 extending in the horizontal direction orthogonal to the conveyance direction of the paper P, and characters and images are fed to the fed paper P. A recording head 22 for printing is provided.

  The linear transport path 17 is provided on the upstream side of the recording head 22, and a pair of upper and lower transport rollers 23, 24 that sandwich the sheet P transported from the arc-shaped transport path 16 and transport it to the printing position by the recording head 22. And a pair of upper and lower paper discharge rollers 25 and 26 that are provided on the downstream side of the recording head 22 and sandwich the paper P printed by the recording head 22 and discharge it to the paper discharge tray 6. The transport rollers 23 and 24 are configured such that the transport roller 24 on the upper side thereof can move in the vertical direction, so that the transport roller 24 on the upper side can contact and separate from the transport roller 23 on the lower side. .

The linear conveyance path 17 is provided with a sheet detection sensor 31 on the upstream side of the conveyance rollers 23 and 24, and on the downstream side of the conveyance rollers 23 and 24, a sheet cueing sensor is located before the printing position. 32 is provided.
In the printer 1, the pickup roller 13, the feed roller 14, the retard roller 15, and the intermediate roller 18 constitute a paper feed drive mechanism 33 that feeds the paper P along the arcuate transport path 16. , 24, and the paper discharge rollers 25, 26, a transport driving mechanism 34 for transporting the paper P along the linear transport path 17 is configured.

  The pickup roller 13, the paper feed roller 14, and the intermediate roller 18 constituting the paper feed drive mechanism 33 are driven by a paper feed drive motor 35 described later, and the transport roller 23 and the paper discharge roller 25 constituting the transport drive mechanism 34 are It is driven by a conveyance drive motor 36 described later.

Next, the control system of the printer 1 will be described.
FIG. 3 is a block diagram illustrating the control system of the printer.
As shown in FIG. 3, the printer 1 includes a control unit 37, and a sheet detection sensor 31 and a sheet cueing sensor 32 are connected to the control unit 37, and the sheet detection sensor 31 and the sheet cueing sensor are connected to the control unit 37. Detection signals are output from 32 respectively.

Further, a paper feed drive motor 35 and a transport drive motor 36 which are drive sources of the paper feed drive mechanism 33 and the transport drive mechanism 34 are connected to the control unit 37, and based on a control signal from the control unit 37. The drive of the paper feed drive motor 35 and the transport drive motor 36 is controlled.
Further, a print processing unit 38 including the recording head 22 is connected to the control unit 37, and printing processing on the paper P by the recording head 22 is performed based on a print control signal from the control unit 37.

Next, the printing operation on the paper P by the control unit 37 in the printer 1 will be described. In the following, for convenience, the sheet fed to the nth sheet is denoted as Pn.
When the printing process is started, the pickup roller 13 moves downward, and the paper feed drive motor 35 of the paper feed drive mechanism 33 is driven to feed the first sheet P1 from the paper cassette 5. , And sent out along the arcuate conveyance path 16.
At the same time, the transport drive motor 36 of the transport drive mechanism 34 is driven to rotate the transport rollers 23 and 24 and the paper feed rollers 25 and 26. When the leading edge of the sheet P1 is detected by the sheet detection sensor 31, the pickup roller 13 moves upward so that the next sheet P2 is not sent out.
As a result, the paper P1 is first sandwiched between the transport rollers 23 and 24 and transported along the linear transport path 17.

At this time, the paper feed drive motor 35 of the paper feed drive mechanism 33 is driven in synchronism with the transport drive motor 36, so that the load on the transport drive motor 36 is reduced.
Then, after the leading end of the paper P1 is detected by the sheet cueing sensor 32, the paper P1 is positioned with respect to the recording head 22 of the print processing unit 38, and then the carriage 45 is moved to the paper P1. Ink is ejected from the ejection nozzles of the recording head 22 while moving in the sub-scanning direction, which is the width direction, and printing on the paper P1 is performed. The leading end of the sheet P1 is sandwiched between the sheet feeding rollers 25 and 26 and conveyed toward the sheet discharge tray 6.

Here, the operation when printing is performed continuously will be described with reference to FIG.
FIG. 4 is a flowchart showing the continuous printing operation.
When the trailing edge of the sheet P1 is detected by the sheet detection sensor 31 (step S1), the upper conveyance roller 24 of the conveyance rollers 23 and 24 moves upward, and the sheet P1 is conveyed by the conveyance rollers 23 and 24. The sandwiched state is released. At the same time, the paper feed drive motor 35 of the paper feed drive mechanism 33 that has been driven in synchronization with the transport drive motor 36 is stopped (step S2).
Thereafter, the pickup roller 13 moves downward, and the paper feed drive motor 35 of the paper feed drive mechanism 33 is driven at a high speed, whereby the next paper P2 is sent out from the paper cassette 5 along the arcuate conveyance path 16 at a high speed. When the leading edge of the next paper P2 is detected by the sheet detection sensor 31, the pickup roller 13 moves upward so as not to send out the next paper P3. The paper feed drive mechanism 33 is driven as it is, and the leading edge of the next paper P2 is conveyed to just after the previous paper P1 (step S3).

Then, the paper is fed to the transport drive motor 36 of the transport drive mechanism 34 so that the next paper P2 is transported at regular intervals to the previous paper P1 transported to the paper discharge tray 6 while being printed from this state. The drive of the paper feed drive motor 35 of the paper drive mechanism 33 is synchronized (step S4).
When the leading edge of the next paper P2 reaches just before the cueing position, the paper feed drive motor 35 of the paper feed drive mechanism 33 stops and the conveyance of the paper P2 is stopped (step S5).
Note that the conveyance distance to the position just before the cueing position of the leading edge of the paper P2 is determined by the drive pulse of the paper feed drive motor 35 after the detection by the sheet detection sensor 31.

When printing of the previous paper P1 is completed, the transport drive mechanism 34 starts the paper discharge operation, whereby the previous paper P1 is sent to the paper discharge tray 6 and the transport drive motor 36 stops (step S6).
The paper discharge operation is performed until the paper P is discharged to the paper discharge tray 6 based on the rear end position of the previous paper P detected by the sheet cue sensor 32.
When it is determined from the drive pulse of the transport drive motor 36 of the transport drive mechanism 34 that the discharge of the previous sheet P1 has been completed, the transport roller 24 that has moved upward is lowered, and the transport rollers 23, 24 cause the next The paper P2 is nipped (step S7).

In this state, the conveyance drive motor 36 of the conveyance drive mechanism 34 is driven and conveyed along the linear conveyance path 17 until the leading edge of the next sheet P2 is detected by the sheet cueing sensor 32 (step S8). ).
Thereafter, the paper P2 is positioned with respect to the recording head 22, and printing is performed on the paper P2 by ejecting ink from the ejection nozzles while the recording head 22 moves in the sub-scanning direction that is the width direction of the paper P2. (Step S9).

The leading end of the sheet P2 is nipped between the sheet feeding rollers 25 and 26 and conveyed toward the sheet discharge tray 6.
At this time, the paper feed drive motor 35 of the paper feed drive mechanism 33 is driven in synchronism with the transport drive motor 36, so that the load on the transport drive motor 36 is reduced.

As described above, according to the recording apparatus including the printer 1 and the control method thereof according to the above-described embodiment, the conveyance is performed at the time when the trailing end of the sheet Pn being printed reaches the position just before the nipping position by the conveyance rollers 23 and 24. Since the rollers 23 and 24 are separated from each other, it is possible to eliminate load fluctuations on the transport drive motor 36 when the sandwiched paper Pn comes out of the transport rollers 23 and 24.
As a result, it is possible to reduce fluctuations in the conveyance state of the paper Pn being printed due to load fluctuations of the conveyance drive motor 36, and it is possible to perform printing with high quality, in particular, to the thick paper Pn with high definition. Can be printed.

Further, when performing continuous printing, the next paper Pn + 1 is fed immediately after the previous paper Pn, so that the printing speed during continuous printing can be increased and the processing time can be shortened. it can. In addition, since the next sheet Pn + 1 is fed after the conveyance rollers 23 and 24 are separated from each other, load fluctuations on the conveyance drive motor 36 when the next sheet Pn + 1 is fed between the conveyance rollers 23 and 24 are reduced. Can be eliminated.
As a result, it is possible to reduce fluctuations in the conveyance state of the paper Pn being printed due to fluctuations in the load of the conveyance drive motor 36, and it is possible to perform printing with high quality, particularly with high definition on thick paper. Rapid continuous printing is possible.

  Further, when the leading edge of the next sheet Pn + 1 reaches the position just before the cueing position before the printing position by the recording head 22 on the downstream side of the transport rollers 23 and 24, the sheet feeding operation by the sheet feeding drive mechanism 33 is performed. By stopping the printing, the printing on the next sheet Pn + 1 can be started quickly after the printing on the previous sheet Pn is completed, and the processing time for continuous printing can be further shortened. Can do.

  Further, since the next paper Pn + 1 is sandwiched by bringing the transport rollers 23 and 24 close to each other after the printing of the previous paper Pn, the printing on the next paper Pn + 1 is quickly performed after the printing of the previous paper Pn. In addition, it is possible to eliminate the load fluctuation on the transport drive motor 36 of the transport drive mechanism 34 during printing on the previous paper Pn, and it is possible to print on the previous paper Pn with high quality.

  By the way, in the above-described embodiment, by separating the conveying rollers 23 and 24, the influence of the load when the next sheet is fed between the conveying rollers 23 and 24 is reduced, so that the sheet conveying accuracy is improved. Although the cueing position is finally determined by the cueing sensor 32, the conveyance rollers 23 and 24 can be separated to reduce the influence of the load when the next sheet is fed between the conveyance rollers 23 and 24. Therefore, even if the sheet cueing sensor 32 does not perform cueing, it is possible to realize further increase in printing speed while sufficiently improving the cueing accuracy of the paper.

Next, an example of a continuous printing operation in the case where cueing of the next sheet by the sheet cueing sensor 32 is omitted will be described with reference to FIG.
FIG. 5 is a flowchart showing the continuous printing operation.

When the trailing edge of the paper Pn that has been previously printed is detected by the sheet detection sensor 31, the paper feed drive motor 35 of the paper feed drive mechanism 33 that has been driven in synchronization with the transport drive motor 36 stops ( In step S11), the upper conveyance roller 24 of the conveyance rollers 23 and 24 moves upward, and the nipping state of the paper Pn by these conveyance rollers 23 and 24 is released (step S12).
Thereafter, the pickup roller 13 moves downward, and the paper feed drive motor 35 of the paper feed drive mechanism 33 is driven at a high speed, whereby the next paper Pn + 1 is sent out from the paper cassette 5 along the arcuate conveyance path 16 at a high speed. When the leading edge of the next paper P is detected by the sheet detection sensor 31, the pickup roller 13 moves upward so that the next paper Pn + 2 is not sent out. The paper feed drive mechanism 33 is driven as it is, and the leading edge of the next paper Pn + 1 is conveyed to just after the previous paper Pn (step S13).

Then, the paper is fed to the transport drive motor 36 of the transport drive mechanism 34 so that the next paper Pn + 1 is transported at regular intervals with respect to the previous paper Pn transported to the paper discharge tray 6 while printing from this state. The drive of the paper feed drive motor 35 of the paper drive mechanism 33 is synchronized (step S14).
When the leading edge of the next paper Pn + 1 reaches the cueing position, the paper feed drive motor 35 of the paper feed drive mechanism 33 is stopped and the transport of the paper P is stopped (step S15).
Here, the transport distance to the cueing position of the leading edge of the paper Pn + 1 is determined by the drive pulse of the paper feed drive motor 35 after detection by the sheet detection sensor 31.

When the printing of the previous paper Pn is completed, the transport roller 24 that has moved upward is lowered, and the next paper Pn + 1 is pinched by the transport rollers 23 and 24 (step S16).
Thereafter, the paper Pn + 1 is positioned with respect to the recording head 22, and the ink is ejected from the ejection nozzle while the recording head 22 moves in the sub-scanning direction, which is the width direction of the next paper Pn + 1, while discharging the previous paper Pn. Thus, printing on the next sheet Pn + 1 is performed (step S17).

Then, after the previous paper Pn is discharged to the paper discharge tray 6, the next paper Pn + 1 is conveyed toward the paper discharge tray 6 with its leading end being sandwiched between the paper supply rollers 25 and 26.
At this time, the paper feed drive motor 35 of the paper feed drive mechanism 33 is driven in synchronism with the transport drive motor 36, so that the load on the transport drive motor 36 is reduced.

Also in the case of performing the above-described continuous printing, the next paper Pn + 1 is fed immediately after the previous paper Pn, so that the printing speed at the time of continuous printing can be increased and the processing time can be shortened. Moreover, since the next sheet Pn + 1 is fed after the conveyance rollers 23 and 24 are separated from each other, fluctuations in the load on the conveyance drive motor 36 when the next sheet Pn + 1 is sent between the conveyance rollers 23 and 24 can be eliminated. .
As a result, it is possible to reduce fluctuations in the conveyance state of the paper Pn being printed due to fluctuations in the load of the conveyance drive motor 36, and it is possible to perform printing with high quality, particularly with high definition on thick paper. Rapid continuous printing is possible.

  Further, when the leading edge of the next paper Pn + 1 reaches the cueing position before the printing position by the recording head 22 on the downstream side of the transport rollers 23 and 24, the paper feeding operation by the paper feeding drive mechanism 33 is stopped. Thus, after the printing on the previous paper Pn is completed, the printing on the next paper Pn + 1 can be started more quickly, and the processing time for continuous printing can be further shortened.

  In addition, since the next paper Pn + 1 is sandwiched by bringing the transport rollers 23 and 24 close to each other after the printing of the previous paper Pn, printing on the next paper Pn + 1 can be started quickly after the printing of the previous paper Pn is completed. In addition, it is possible to eliminate load fluctuations on the transport drive motor 36 of the transport drive mechanism 34 during printing on the previous paper Pn, and it is possible to print on the previous paper Pn with high quality.

In the above embodiment, an example of an inkjet printer having a U-shaped conveyance path has been described as an example of a recording apparatus. However, the present invention is not limited to a printer having a U-shaped conveyance path, and an inkjet type is also used. It is not limited to. Specifically, the present invention can be applied to a printer having only a linear conveyance path, and can also be applied to a dot impact printer.
In the above embodiment, the sheet-like medium has been described by taking paper as an example. However, the present invention is also applicable to a medium made of a resin film or the like.

1 is an external perspective view of an embodiment of a printer according to the present invention. FIG. 2 is a longitudinal sectional view illustrating a schematic configuration of a paper conveyance path and a print processing unit incorporated in the printer illustrated in FIG. 1. FIG. 2 is a control block diagram illustrating a schematic control system of a printer. It is a flowchart figure which shows continuous printing operation | movement. It is a flowchart figure which shows the other example of continuous printing operation | movement.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Printer (recording device), 5 ... Paper cassette, 23, 24 ... Conveyance roller, 25, 26 ... Discharge roller, 33 ... Paper feed drive mechanism, 34 ... Conveyance drive mechanism, 36 ... Conveyance drive motor, 38 ... Printing Processing unit, P: paper (medium).

Claims (5)

A sheet feeding drive mechanism that feeds a sheet-like medium; a conveyance drive mechanism that conveys the medium fed from the sheet feed drive mechanism; and a print processing unit that performs printing on the medium conveyed by the conveyance drive mechanism. ,
The transport driving mechanism is disposed on the upstream side of the print processing unit and a pair of contact rollers that are transportable while sandwiching the medium, and is disposed on the downstream side of the print processing unit to sandwich the medium. A recording apparatus, comprising: a pair of paper discharge rollers that discharge the paper while discharging the paper, and a conveyance drive motor that rotates the conveyance rollers and the paper discharge rollers in synchronization with each other. A sheet feeding drive mechanism that feeds a sheet-like medium; a conveyance drive mechanism that conveys the medium fed from the sheet feed drive mechanism; and a print processing unit that performs printing on the medium conveyed by the conveyance drive mechanism. ,
The transport driving mechanism is disposed on the upstream side of the print processing unit and a pair of contact rollers that are transportable while sandwiching the medium, and is disposed on the downstream side of the print processing unit to sandwich the medium. A control method for a recording apparatus comprising a pair of paper discharge rollers for discharging paper and a transport drive motor for rotating the transport rollers and the paper discharge rollers while synchronizing them,
A control method for a recording apparatus, characterized in that the conveying rollers are separated from each other when a trailing edge of a medium being printed by the printing processing unit reaches a nipping position by the conveying rollers or a position immediately before the nipping position. A control method for a recording apparatus according to claim 2,
A control method for a recording apparatus, wherein after the conveying rollers are separated from each other, a medium to be printed next is fed immediately after the preceding medium by the paper feed driving mechanism. A control method for a recording apparatus according to claim 3,
Stopping the paper feeding operation by the paper feed driving mechanism when the leading edge of the next medium reaches the cueing position in front of the printing position by the print processing unit on the downstream side of the conveying roller or the position just before it. A control method for a recording apparatus. A control method for a recording apparatus according to claim 3 or 4, wherein:
A recording apparatus, wherein after the printing of the previous medium is completed, the conveying roller is brought close to sandwich the next medium.

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