JP2012006253A - Image recording apparatus, and method for control thereof - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an image recorder for suppressing the occurrence of paper loss to the minimum by matching an image recording position and a cutting position without requiring any additional mechanism for changing conveyance directions, and to provide a method for control thereof.SOLUTION: The image recording apparatus is configured to set a record timing reference position 34 to prevent the cutting position of a cutting section 10 from falling between the record timing reference position 34 and a first image recording portion 4, thus minimizing the paper loss amount.

Description

  The present invention relates to an image recording apparatus that records an image on a continuous recording medium, and more particularly to an image recording apparatus that includes a cutting unit that cuts a recording medium, and a control method for the image recording apparatus.

  As a recording medium used in an image recording apparatus such as a printer or FAX, a continuous recording medium (continuous storage medium) obtained by winding paper or film in a roll shape, or a recording medium that has been cut into a predetermined size in advance. It has been known.

When the cut sheet is a recording medium, the image recording apparatus records an image for each recording medium forming each page while conveying the recording medium at a high speed of several tens to several hundreds m / min, and then ejects the recording medium. .
On the other hand, in the case of an image recording apparatus using a continuous recording medium, image recording for each page is performed on the continuous recording medium, and then this is cut into pages by a cutting unit and then discharged.

  In Patent Document 1, in an image recording apparatus using a continuous recording medium such as roll paper, the continuous recording medium is cut by detecting a cut mark printed on the continuous recording medium. At this time, the conveyance path length is changed based on the difference between the detection timing of the cut mark and the cutting timing, and the cutting position of the recorded image and the recording medium is adjusted. As a result, the image recording apparatus of Patent Document 1 can reduce the occurrence of waste paper.

JP 2008-55783 A

  However, the image recording apparatus of Patent Document 1 requires an image reading unit for detecting a cut mark and a mechanism for changing the conveyance path length. Therefore, there is a problem that the scale of the apparatus is increased and the cost is increased.

Further, Patent Document 1 does not disclose any relationship between the timing for starting image recording and the timing for cutting the continuous recording medium.
Therefore, the present invention has been made in view of the above-described problems, and an object thereof is to provide an image recording apparatus and a control method capable of cutting a continuous recording medium without requiring a cut mark.

  It is another object of the present invention to provide an image recording apparatus and a control method capable of matching the image recording position and the cutting position and minimizing the generation of waste paper without providing a mechanism for changing the conveyance path.

The image recording apparatus includes a conveyance information generation unit that outputs conveyance information of the continuous recording medium in an image recording apparatus that records an image on a continuous recording medium in an image recording unit based on an image recording command from a host apparatus. A conveying unit that conveys the continuous recording medium through a conveying path with a predetermined tension and speed, and the continuous recording medium are disposed so as to be capable of cutting the continuous medium, and rotated at a predetermined number of rotations. A cutting unit having a cut-side rotating body and a receiving-side rotating body that cuts at a predetermined length, and a recording that generates a recording timing signal indicating a timing for starting image recording on the continuous recording medium based on an output signal of the transport information generating unit A timing signal generator;
When the image recording command is received with a reference position set upstream from the image recording unit by a predetermined distance in the conveyance path, the conveyance unit and the cutting unit are operated, and the cut rotating body of the cutting unit is cut. A control unit that causes the recording timing signal generation unit to generate the recording timing signal so that a position corresponding to the reference position of the continuous recording medium when in a position is a start position of the image recording, and The reference position is set so that a scheduled cutting position by the cutting unit does not come between the image recording unit and the reference position.

  The control method of the present image recording apparatus is a control method of an image recording apparatus for recording an image on a continuous recording medium by an image recording unit based on an image recording command from a host device, and The conveyance section that conveys the conveyance path at a speed and outputs conveyance information of the continuous recording medium, and the continuous recording medium are arranged so as to face each other so that the continuous medium can be cut. Based on a signal output by the conveyance information generation unit when a cutting unit having a cut-side rotator and a receiving-side rotator for cutting the medium at a predetermined length is operated and the cut rotator of the cutting unit is at a cutting position. A position corresponding to a reference position set upstream by a predetermined distance on the transport path of the continuous medium from an image recording unit that records an image on the continuous recording medium based on the generated recording timing signal, The recording timing signal is generated so as to be an image recording start position, and the reference position is set so that the scheduled cutting position by the cutting unit does not come between the image recording unit and the reference position. And

According to the present invention, it is possible to make the position of the image coincide with the cutting position without using a cut mark and without using a mechanism for changing the conveyance path.
Moreover, the generation of waste paper can be minimized.

1 is a conceptual block diagram illustrating a configuration included in an image recording apparatus according to an embodiment. FIG. 3 is a diagram schematically illustrating a recording medium conveyance path of the image recording apparatus according to the embodiment. 6 is a time chart showing the timing of image recording and cutting on a recording medium by the image recording apparatus of the embodiment. FIG. 6 is a diagram for explaining a change in the amount of waste paper caused by a difference in setting position of a recording timing reference position. In the image recording apparatus of the present embodiment, it is a diagram showing the case where the recording timing reference position is set so as to minimize the amount of waste paper, including specific numerical values.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
In the following description, an example of an inkjet full-line printer will be described as an example of the image recording apparatus of the present embodiment. Note that the recording method of the image recording apparatus of the present embodiment is not limited to the ink jet method, and other methods such as an electrostatic induction method may be used.

FIG. 1 is a conceptual block diagram illustrating the configuration of the image recording apparatus according to the present embodiment.
The image recording apparatus 1 in FIG. 1 includes a recording medium feeding unit 12, a first image recording unit 4, a second image recording unit 5, a transport unit 8, a cutting unit 10, and a control unit 3.

  The recording medium feeding unit 12 accommodates a continuous roll-shaped continuous recording medium (hereinafter referred to as a recording medium 30). The first image recording unit 4 records an image on the first surface (front surface) of the recording medium 30. The second image recording unit 5 records an image on a second surface (back surface) that is the back surface of the first surface of the recording medium 30. The transport unit 8 transports the recording medium 30 on which the image is recorded by the first image recording unit 4 and the second image recording unit 5 at a predetermined tension and speed. The cutting unit 10 cuts the recording medium 30 into a predetermined length. The control unit 3 controls the entire image recording apparatus 1.

  A recording medium discharge unit 13 for stacking the recording media 30 cut by the cutting unit 10 is disposed at the subsequent stage of the cutting unit 10. The recording medium discharge unit 13 is provided with a recording medium stacker 24 for stacking the recording mediums 30 on which images are recorded, and a discard medium stacker 25 for discarding unnecessary recording media 30 (hereinafter referred to as waste paper). Yes. When the medium path switching unit 23 switches the discharge path, the waste paper is discharged to the waste medium stacker 25, and the other cut recording media 30 are discharged to the recording medium stacker 24.

  The transport unit 8 includes a pair of nip rollers 14 a and 14 b that sandwich the continuous recording medium 30 and transport it toward the transport downstream. The nip roller pair 14 a and 14 b are driven by a nip roller driving motor 15. The recording medium 30 is conveyed downstream at a constant speed in a state where a predetermined tension is applied by the pair of nip rollers 14a and 14b.

  The transport unit 8 is provided with a transport information generation unit 9 that outputs transport information indicating the transport amount of the recording medium 30 following the transport of the recording medium 30. The conveyance information generation unit 9 is configured by a rotary encoder, for example.

  The output signal of the conveyance information generation unit 9 is input to the recording timing signal generation unit 16 of the control unit 3. In the recording timing signal generation unit 16, the first image recording unit 4 and the second image recording unit 5 generate recording timing signals for instructing the timing for recording an image on the recording medium 30. The recording timing signal generation unit 16 outputs a recording timing signal delayed from the time point when the recording medium is cut by a delay amount set in advance by the control unit 3.

  The cutting unit 10 includes a cut roller 18 serving as a cut-side rotating body that is disposed so as to be capable of cutting the recording medium 30 and is rotated at a predetermined rotation speed, and an anvil roller 19 serving as a receiving-side rotating body. . A cutter blade 22 is provided on the outer peripheral surface of the cut roller 18. When the cut roller 18 rotates, the recording medium 30 is cut by the cutter blade 22.

  The cut roller 18 rotates using the cut roller drive motor 21 as a drive source. The cut roller drive motor 21 establishes synchronization between the conveyance speed of the recording medium 30 and the peripheral speed of the cutter blade 22 using the conveyance information generated by the conveyance information generation unit 9 as a control pulse. Further, the length for cutting the recording medium 30 during image recording is determined by the circumferential length of the cut roller 18. Therefore, the cutting part 10 can change the cutting length of the recording medium 30 by exchanging with the cut roller 18 having a different circumferential length.

FIG. 2 is a diagram schematically showing the conveyance path of the recording medium 30 of the image recording apparatus 1 of the present embodiment.
The recording medium 30 is accommodated in the recording medium feeding unit 12 in a state of being wound in a roll shape. A back tension is applied to the recording medium 30 in the image recording apparatus 1 by a braking mechanism (not shown). The recording medium 30 is transported along the transport path while the transport speed is kept constant by the pair of nip rollers 14a and 14b. With respect to the recording medium 30 thus conveyed, the first image recording unit 4 and the second image recording unit 5 have the first and second surfaces based on the recording timing signal output from the recording timing signal generating unit 16. Image recording is performed on the surface.

  In the present embodiment, the rotary cutting unit 10 is used as a method of cutting the recording medium 30 on which image recording has been performed in units of pages. Then, by rotating the circumferential speed of the cutter blade 22 at a constant speed synchronized with the conveyance speed of the recording medium 30, the cutter blade 22 is pressed against the anvil roller 19 side, and the recording medium 30 is cut into a predetermined medium size. The

  The cutting unit 10 also has a blade position information generation unit 20 for detecting the position of the cutter blade 22. The blade position information generation unit 20 includes, for example, an optical transmission sensor, an optical reflection sensor, a capacitance sensor, or the like, and detects whether or not the cutter blade 22 is located at the cutting position 11. .

  The first image recording unit 4 includes a recording timing signal delay unit 32, a nozzle row (not shown), and a nozzle driving unit. The recording timing signal delay unit 32 delays the recording timing signal output from the recording timing signal generation unit 16 by a delay amount set in advance by the control unit 3. In the first image recording unit 4, the nozzle driving unit drives the nozzles in the nozzle row in synchronization with the conveyance information output from the conveyance information generation unit 9 at the timing of the delayed recording timing signal, and image recording is performed. Do.

  Similar to the first image recording unit 4, the second image recording unit 5 includes a recording timing signal delay unit 33, a nozzle row (not shown), and a nozzle driving unit. Similarly to the first image recording unit 4, in the second image recording unit 5, the nozzle driving unit drives the nozzle at the timing based on the recording timing signal delayed by the recording timing signal delay unit 33 while synchronizing with the conveyance information. To record an image.

  The control unit 3 controls driving of the first image recording unit 4, the second image recording unit 5, the transport unit 8, the cutting unit 10, and the like based on job information notified from the host device 2 such as a personal computer. I do. The control unit 3 includes a storage unit 31 having a non-volatile area inside and an arithmetic processing unit (not shown), and each processing is realized by the arithmetic processing unit executing a control program in the non-volatile area.

FIG. 3 is a time chart showing the timing of image recording and cutting on the recording medium 30 by the image recording apparatus 1 of the present embodiment.
3 shows the cutting timing and recording timing signal by the cutting unit 10 when the image recording command is received as job information from the host apparatus 2 with the cutter blade 22 positioned at the cutting position 11, and the recording medium 30. The conveyance position relationship is shown. In the figure, the recording medium 30 is conveyed from left to right. In the figure, to simplify the description, it is assumed that the job information notifies the first surface of the recording medium 30 to perform image recording processing together with the image information of two pages.

  FIG. 3 shows each timing and movement of the cutting position of the recording medium 30 over time from t1 to t9. The black circles in the figure indicate the location where the recording medium 30 is cut, and the position moves from left to right as time elapses from t1 to t9. In addition, “P.1” and “P.2” in the figure indicate pages on which the image is recorded by being notified by the job information. The part shows the page part which becomes a waste paper.

  In FIG. 3, L is a conveyance path length from the cutting position 11 to the first image recording unit 4. S is a length obtained by converting a minimum processing time required for hardware setting for transferring image data to the image recording unit 4 and the image recording unit 5 into a conveyance path length.

  The recording timing reference position 34 is a position serving as a reference for image recording processing by the first image recording unit 4. When the control unit 3 receives job information from the host device 2, the control unit 3 operates the transport unit 8 and the cutting unit 10. Then, when the cutter blade 22 of the cutting unit 10 reaches the cutting position 11, the control unit 3 starts image recording with the point of the recording timing reference position 34 of the recording medium 30 as the head (cutting portion) of the first page. Set the timing and cutting timing. The recording timing reference position 34 is set upstream of the first image recording 4 in the transport direction based on the characteristics of the image recording apparatus 1.

F is a length obtained by converting the processing time required for image recording into the processing time for transferring the image data into the transport path length from the recording timing reference position 34 to the first image recording unit 4, and satisfies the following equation. .
F> = S (1)

  For example, when the recording method of the image recording apparatus 1 is an ink jet method, the first image recording unit 4 and the second image recording unit 5 increase the viscosity of the ink inside when the image recording process is not performed. Precursor operation (nozzle fine vibration drive that does not discharge ink) is performed. Therefore, when image recording is started, software processing time for stopping the precursor operation is required. Further, in order to make the ink ejection amount constant, a voltage is applied to the nozzle row in the first image recording unit 4 and the second image recording unit 5 in accordance with the temperature of the ink. Therefore, when image recording is started, a processing time for changing the applied voltage is required. Furthermore, when the recording method of the image recording apparatus 1 is an electrostatic induction method, time required for the process of raising the heater for fixing the toner to a certain temperature is required. These processes are performed within the time when the recording medium 30 is transported from the recording timing reference position 34 to the first image recording unit 4.

Therefore, F shown in the equation (1) actually satisfies F> S.
These values of the conveyance path length are notified from the control unit 3 to the conveyance unit 8 when the image recording apparatus 1 is powered on, for example. The value of the conveyance path length F is notified from the control unit 3 to the first image recording unit 4 when the image recording apparatus 1 is powered on, for example.

C in FIG. 3 is a cutting length for cutting the recording medium 30 determined by the circumferential length of the cut roller 18. M is the length of the conveyance path from when the recording medium 30 is cut to when the recording timing signal is output, and is calculated by the following equation.
M = (C × n) − (L + F) (2)
However, n is an integer satisfying the following formula.
(C × n)> = (L + F) (3)

  B is a preset transport path length from the recording timing reference position 34 to the second image forming unit 5, and this transport path length B is, for example, from the control unit 3 to the second when the image recording apparatus is turned on. Is notified to the image recording unit 5.

Next, the operation of the image recording apparatus 1 over time from t1 to t9 in FIG. 3 will be described.
When the control unit 3 receives an image recording command based on job information from the host device 2, the control unit 3 drives the nip roller driving motor 15 to start conveying the recording medium 30. Further, the control unit 3 drives the cut roller drive motor 21 so that the cut roller 18 is driven to rotate in synchronization with the pulse output from the conveyance information generation unit 9 in accordance with the rotation of the nip roller pair 14a and 14b. .

  And the control part 3 detects that the cutter blade 22 reached | attained the cutting position 11 by the blade position information generation part 20 (t1). When the recording medium 30 is conveyed by M, the recording timing signal output from the recording timing signal generation unit 16 changes from off to on (t2).

  Next, when the recording medium 30 is conveyed by F, based on the recording timing signal delayed by the recording timing signal delay unit 32, the first image recording unit 4 performs the first (P.1) first recording. Surface image recording is started (t3).

  When the recording medium 30 is transported by C from the position at the time t2, the recording timing signal output from the recording timing signal generating unit 16 is immediately turned on when the recording timing signal changes from on to off (t4). When the recording medium 30 is further conveyed by F from the position at time t4, the first image recording unit 4 uses the second recording sheet (P.P.) based on the recording timing signal delayed by the recording timing signal delay unit 32. The image recording of the first surface in 2) is started (t5).

When the recording medium 30 is further conveyed by C from the position at time t5, the image recording by the first image recording unit 4 is finished (t6).
When the recording medium 30 is conveyed by S + L from the position at time t2, the recording blade 30 is cut by the cutter blade 22 at the cutting position 41 corresponding to the tip of the first sheet (P.1) (t7). Then, when the recording medium 30 is conveyed by C from the position t7, the cutter blade 22 cuts the recording medium 30 at the cutting position 42 corresponding to the rear end of the first sheet (P.1) (the front end of the second sheet (P.2)). Disconnected (t8). When the recording medium 30 is further conveyed by C from here, it is cut by the cutter blade 22 at the cutting position 43 corresponding to the rear end of the second sheet (P.2) (t9).

  When the second image recording unit 5 performs image recording on the second surface of the recording medium 30, the second image recording unit 5 is at the timing when the recording medium 30 is conveyed by B from the position t2. Thus, image recording on the second surface of the first sheet (P.1) of the recording medium 30 is started. Then, at the timing when the recording medium 30 is further conveyed by C, image recording on the second surface of the second sheet (P.2) is started.

  As described above, in the example of FIG. 3, the portion before the position where the image is recorded on the first page (the range from the cutting units 40 to 41) is not recorded and is discarded as waste paper. The amount of discharged paper is 4 pages in the case of FIG. 3, but the amount of discharged paper varies depending on the position of the recording timing reference position 34.

FIGS. 4A and 4B are diagrams for explaining a change in the amount of waste paper caused by a difference in the setting position of the recording timing reference position 34. FIG.
FIG. 4A is a diagram for explaining the amount of waste paper generated when the cutting length of the recording medium 30 in FIG. 3 is C and C1 (where C> C1). . 4B occurs when the recording timing reference position 34 is set to a position 34a away from the first image recording unit 4 by Fa (where Fa> F) from the state of FIG. 4A. It is a figure for demonstrating the quantity of the waste paper to do.

  In FIG. 4A, when the cut roller 18 having a length C for cutting the recording medium 30 is attached, the first image on the first surface from the position of MaC of the recording medium 30 is recorded. A 3 × C length of waste paper is generated. Further, when the cut roller 18 having a length C1 for cutting the recording medium 30 is mounted, the first image on the first surface is recorded from the position of MaC1 of the recording medium 30, so that the length is 4 × C1. Scrap paper is generated.

  On the other hand, in FIG. 4B, when the cut roller 18 having a length C for cutting the recording medium 30 is attached, the first image on the first surface is recorded from the MbC position of the recording medium 30. Therefore, 3 × C length of waste paper is generated. Further, when the cut roller 18 having a length C1 for cutting the recording medium 30 is attached, the first image on the first surface is recorded from the position of MbC1 on the recording medium 30, so that the length is 5 × C1. Scrap paper is generated.

  Therefore, when comparing the amount of waste paper in FIGS. 4A and 4B, when the cut roller 18 having a length C for cutting the recording medium 30 is attached, the length of the waste paper generated is as follows. Be the same. However, when the cut roller 18 having a length C1 for cutting the recording medium 30 is attached, the generated waste paper increases by C1 in the case of FIG. 4B.

Accordingly, when the amount of waste paper is taken into consideration, the recording timing reference position 34 does not simply satisfy F> S.
In the image recording apparatus 1 of the present embodiment, the recording timing reference position 34 is not limited by the length of cutting the recording medium 30, and the cutting position of the recording medium 30 by the cutter blade 22 is the same as the first image recording unit 4 and the recording timing. The positions are not included between the reference positions 34. This minimizes the amount of waste paper that occurs from the start of conveyance of the recording medium 30 to when the first recording medium on which the image is recorded by the first image recording unit 4 is discharged. it can.

The distance F from the first image recording unit 4 to the recording timing reference position 34 at this time satisfies all the following expressions (3) and (4) when the cutting length at which the recording medium 30 is cut is C1. When the cutting length is C2, the values satisfy all the expressions (5) and (6).
(C × n1)> = (L + F) (3)
(C × (n1-1)) <L (4)
(C2 × n2)> = (L + F) (5)
(C2 × (n2-1)) <L (6)
Where n1 and n2 are integers

Accordingly, when there are α types of cutting lengths of the recording medium 30, in order to minimize the waste paper generated in all of them, all the following equations are satisfied for all α (where α is an integer of 2 or more). do it.
(Cα × nα)> = (L + F) (7)
(Cα × (nα-1)) <L (8)

  In the image recording apparatus 1 of the present embodiment, values of F that satisfy the equations (7) and (8) are obtained for all the cut rollers 18 used, and this value is upstream of the first image recording unit 4. The position F is set as a recording timing reference position 34. Thereby, the amount of generated waste paper can be minimized.

Next, an example using specific numerical values will be shown and described.
FIG. 5 shows an image recording apparatus 1 in which the conveyance path length L from the cutting position 11 to the first image recording unit 4 is 4000 mm, and the minimum processing time required for image recording is converted to the conveyance path length and the length S is 90 mm. 5 is a diagram showing a case where the recording timing reference position 34 is set so as to minimize the amount of waste paper. In FIG. 5, the second image recording unit 5 is omitted.

  In FIG. 5, the distance F from the first image recording unit 4 to the recording timing reference position 34 is 100 mm. FIG. 4A shows a cutting length C1 = 210 mm, FIG. 4B shows a cutting length C2 = 420 mm, FIG. 4C shows a cutting length C3 = 216 mm, and FIG. Shows the amount of waste paper when the cutting length C4 = 432 mm. When the cutting length is C1 to C4, F = 100 mm, which satisfies the above-described formulas (7) and (8).

  FIG. 5A shows a case where a cut roller 18 having a cutting length of C1 = 210 mm is mounted and the size of one page is set to A4 size. In this case, the first image recording unit 4 performs image recording on the first surface of the first sheet at a position 210 × 20 = 4200 mm from the cutting position 11. Accordingly, the length of the waste paper generated from the start of conveyance of the recording medium 30 until the first recording medium on which the image is recorded by the first image recording unit 4 is 4200 mm.

  FIG. 5B shows a case where a cut roller 18 having a cutting length of C2 = 420 mm is mounted and the size of one page is set to A3 size. In this case, the first image recording unit 4 performs image recording on the first surface of the first sheet at a position of 420 × 10 = 4200 mm from the cutting position 11. Therefore, the length of the waste paper generated from the start of conveyance of the recording medium 30 until the first recording medium on which the image is recorded by the first image recording unit 4 is discharged is shown in FIG. As in the case of, it is 4200 mm.

  FIG. 5C shows a case where a cut roller 18 having a cutting length of C3 = 216 mm is mounted and the size of one page is a letter size. In this case, the first image recording unit 4 performs image recording on the first surface of the first sheet at a position of 216 × 19 = 4104 mm from the cutting position 11. Therefore, the length of the waste paper generated from the start of conveyance of the recording medium 30 until the first recording medium on which the image is recorded by the first image recording unit 4 is 4104 mm.

  FIG. 5D shows a case where a cut roller 18 having a cutting length of C4 = 432 mm is mounted and the size of one page is set as a tabloid size. In this case, the first image recording unit 4 performs image recording on the first surface of the first sheet at a position of 432 × 10 = 4320 mm from the cutting position 11. Therefore, the length of the waste paper generated from the start of conveyance of the recording medium 30 until the first recording medium on which the image is recorded by the first image recording unit 4 is 4320 mm.

  5A, 5B, 5C, and 5D, the cutting position of the recording medium 30 by the cutter blade 22 corresponds to the first image recording unit 4 and the recording timing reference position 34. Not included. Accordingly, it is possible to minimize the length of the waste paper that is generated after the conveyance of the recording medium 30 is started until the first recording medium on which the image is recorded by the first image recording unit 4 is discharged. .

  On the other hand, when the cutting length is C1 to C4, the recording timing reference position 34 is set at a position where the F value does not satisfy the above formula (7) or (8), for example, F becomes 105 mm, and the mounted cut roller Consider a case where the cutting length of 18 is C1 = 216 mm.

  In this case, one of the cutting positions of the recording medium 30 by the cutter blade 22 is located at a position 4104 mm from the cutting position 11 and is included between the first image recording unit 4 and the recording timing reference position 34. Therefore, when F = 105 mm and the cutting length of the cutting roller 18 is C1, the length of the generated damaged paper is 4320 mm, and the amount of lost paper cannot be minimized.

  As described above, according to the image recording apparatus 1 of the present embodiment, the recording timing reference position 34 is set to a position that minimizes the generation of the amount of waste paper. This makes it possible to match the position of the image with the cutting position without using a mechanism for changing the conveyance path, and to minimize the occurrence of waste paper.

  Note that the image recording apparatus 1 of the present embodiment is not limited to the above-described example, and can be embodied by modifying the constituent elements without departing from the gist thereof in the implementation stage. Further, the image recording apparatus 1 of the present embodiment can make various inventions by appropriately combining a plurality of constituent elements disclosed in the above examples. For example, in the present invention, some components may be deleted from all the components shown in the embodiment, and different components in each embodiment may be combined as appropriate.

  For example, in the above example, the image recording method is described as an ink jet method, but the recording processing method is not limited to the ink jet method, and other recording methods such as an electrostatic induction method may be used.

  In the above example, the image recording is performed on both the first surface (front surface) and the second surface (back surface) of the recording medium 30, but the image recording apparatus according to the present embodiment performs image recording on both surfaces. The configuration is not limited, and image recording may be performed only on one side of the recording medium 30.

DESCRIPTION OF SYMBOLS 1 Image recording apparatus 2 Host apparatus 3 Control part 4 1st image recording part 5 2nd image recording part 8 Conveyance part 9 Conveyance information generation part 10 Cutting part 11 Cutting position 12 Recording medium feed part 13 Recording medium discharge part 14a , 14b Nip roller pair 15 Nip roller drive motor 16 Recording timing signal generation unit 18 Cut roller 19 Anvil roller 20 Blade position information generation unit 21 Cut roller drive motor 22 Cutter blade 23 Media path switching unit 24 Recording medium stacker 25 Waste medium stacker 30 Recording medium 31 Storage Unit 32 Recording Timing Signal Delay Unit 33 Recording Timing Signal Delay Unit 34 Recording Timing Reference Position

Claims (9)

In an image recording apparatus for recording an image on a continuous recording medium in an image recording unit based on an image recording command from a host device,
A transport unit that transports the continuous recording medium at a predetermined tension and speed, and includes a transport information generation unit that outputs transport information of the continuous recording medium;
A cutting unit that is disposed so as to face the continuous medium so as to be cut and rotates at a predetermined number of rotations to cut the continuous recording medium at a cutting position at a predetermined length C, and a cut-side rotating body and a receiving-side rotating body.
A recording timing signal generating unit that generates a recording timing signal indicating timing for starting image recording on the continuous recording medium based on an output signal of the conveyance information generating unit;
A reference position set upstream by a distance F from the image recording unit in the conveyance path;
When the image recording command is received, the transport unit and the cutting unit are operated, and the position corresponding to the reference position of the continuous recording medium when the cut rotating body of the cutting unit is at the cutting position is the image recording A control unit that causes the recording timing signal generation unit to generate the recording timing signal so as to be a starting position of
With
The image recording apparatus, wherein the reference position is set such that a scheduled cutting position by the cutting unit does not come between the image recording unit and the reference position. The control unit further includes an arithmetic processing unit and a storage unit that stores a control program in advance,
The image recording apparatus according to claim 1, wherein the arithmetic processing unit functions as the control unit by causing the control program to be executed.   The reference position satisfies (C × n)> = (L + F) and (C × (n−1)) <L where L is a distance between the cutting position and the image recording unit and n is an integer. The image recording apparatus according to claim 1, wherein the image recording apparatus is set upstream of the image recording unit on the conveyance path by a distance F to be performed.   2. The image recording apparatus according to claim 1, wherein when the transport unit receives an operation instruction from the control unit, the transport unit transports the continuous recording medium at a constant speed until a stop instruction is received.   The image recording apparatus according to claim 1, wherein the control unit starts image recording at a timing when the continuous recording medium is conveyed by F from the reference position.   2. The reference position is set such that when the predetermined length C is all of a plurality of values, a scheduled cutting position by the cutting unit is not between the image recording unit and the reference position. The image recording apparatus described in 1.   2. The image recording according to claim 1, wherein after the image recording command is received, a time during which the continuous recording medium is conveyed by F is longer than a time required for the image recording unit to prepare for image recording. apparatus. A control method for an image recording apparatus for recording an image on a continuous recording medium by an image recording unit based on an image recording command from a host apparatus,
The continuous recording medium is transported through a transport path at a predetermined tension and speed, a transport unit that outputs transport information of the continuous recording medium, and the continuous medium are arranged to face each other so as to be cut, and rotate at a constant rotational speed. By operating a cutting unit having a cut-side rotating body and a receiving-side rotating body that cut the continuous recording medium at a predetermined length C at a cutting position,
When the cut rotator of the cutting unit is at the cutting position, the continuous image recording unit performs image recording on the continuous recording medium based on a recording timing signal generated based on a signal output from the conveyance information generation unit. Generating the recording timing signal so that the position corresponding to the reference position set upstream by the distance F on the conveyance path of the medium becomes the start position of the image recording;
The control method for an image recording apparatus, wherein the reference position is set so that a scheduled cutting position by the cutting unit does not come between the image recording unit and the reference position.   The reference position satisfies (C × n)> = (L + F) and (C × (n−1)) <L where L is a distance between the cutting position and the image recording unit and n is an integer. 9. The method of controlling an image recording apparatus according to claim 8, wherein the conveying path is set upstream of the image recording unit by a distance F to be performed.