JP2011189530A - Recorder - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To achieve high-speed and high-accuracy band printing by preventing deviation of an ink reaching position associated with skewing of material to be recorded. <P>SOLUTION: The recorder 1 includes: a recording head 3 which performs recording by ejecting ink from a plurality of ink ejection holes arrayed to form a row on a surface to be recorded of the material to be recorded while moving back and forth in a direction crossing with the conveyance direction of the material to be recorded P; a conveyance roller 23 which is provided on an upstream side of the recording head 3 and conveys the material to be recorded toward the recording head 3 side; an ejection roller 49 which is provided on a downstream side of the recording head 3 and ejects the material to be recorded to the downstream side; and a controller 57 which controls ink ejecting operation in the recording head 3. The recorder 1 performs recording by feeding the material to be recorded by a predetermined amount. The controller 57 is configured to correct a recording start position in a scanning direction of the recording head 3 based on a skewing amount of the material to be recorded that varies according to the conveyance position of the material to be recorded. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention provides band printing in which a recording material is fed by a length equal to or substantially the same as the length of a row formed by a plurality of ink ejection holes, and an area corresponding to the row length is printed at a time. The present invention relates to an executable recording apparatus.

Recent inkjet printers are required to increase the speed, and band printing is used in which recording is performed on a recording material (hereinafter also referred to as “paper”) in units of bands.
In addition, the paper set in the feeding cassette or the like is fed out one by one by the feeding roller, and is guided by the conveyance guide roller or the like halfway to the nip point of the conveyance roller existing at the upstream position of the recording execution area. To reach.

The paper that has reached the nip point of the transport roller is transported toward the recording execution area with a transport force applied from the transport roller, and the discharge roller exists in the downstream position of the recording execution area after the band printing is performed. To reach the nip point.
The paper is transported only by the transport roller until the leading edge of the paper that has reached the nip point of the transport roller reaches the nip point of the discharge roller. This state is defined as “first transport state” in this specification.

When the leading edge of the paper reaches the nip point of the discharge roller, the paper receives a transport force from the two rollers, the transport roller and the discharge roller. This state is defined as a “second transport state” in this specification.
Further, when the band printing proceeds and the trailing edge of the paper leaves the nip point of the transport roller, the paper is transported only by the discharge roller. This state is defined as a “third transport state” in this specification.

In addition, since each roller has different transport directions acting on the paper due to variations in component accuracy, assembly errors, and the like, the paper is transferred in the first transport state, the second transport state, and the third transport state. There is a skew that is conveyed while moving in the paper width direction. The skew amount also varies in each of the first transport state to the third transport state.
Further, when shifting from the second transport state to the third transport state, the rear end of the sheet is lifted from the sheet support surface, and the gap between the ink ejection surface of the recording head and the recording surface of the sheet May fluctuate.

  When the gap fluctuates, the ink landing position shifts, and the recording execution quality is impaired. Therefore, as shown in Patent Document 1 below, the ink ejection timing is adjusted by correcting the recording start position in the carriage scanning direction of the recording head before the transition from the second conveyance state to the third conveyance state. Technology is provided.

JP 2004-255752 A

However, the deviation of the ink landing position is caused not only by the above-described gap variation but also by the above-described skew of the paper. Specifically, when a pattern such as a ruled line extending in the paper conveyance direction is printed by the band printing described above, the ruled line becomes discontinuous, the ruled line looks jagged or tilted, and the recording execution quality is lowered. End up.
As described above, the skew of the sheet occurs in all of the first transport state, the second transport state, and the third transport state, and the skew amount of the sheet is different in each state. Therefore, even if the ink discharge timing is adjusted only at the timing of shifting from the second transport state to the third transport state as in Patent Document 1, the above-described problem that the ruled lines become discontinuous is not solved.

  An object of the present invention is to correct the recording start position in the carriage scanning direction in accordance with the skew amount of the recording material that varies depending on the transport position of the recording material, and land the ink on the recording head caused by the skew feeding. The object is to effectively prevent displacement.

  In order to solve the above problems, the recording apparatus according to the first aspect of the present invention is arranged in a row on the recording surface of the recording material while reciprocating in the direction intersecting the conveyance direction of the recording material. A recording head that performs recording by discharging ink from a plurality of ink discharge holes, a conveyance roller that is provided upstream of the recording head and that conveys a recording material toward the recording head, and Provided on the downstream side of the recording head, comprising a discharge roller for discharging the recording material to the downstream side, and a control unit for controlling the ink ejection operation in the recording head, sending the recording material by a predetermined amount, A recording apparatus that performs recording, wherein the control unit corrects a recording start position in a scanning direction of the recording head based on a skew amount of the recording material that varies depending on a conveyance position of the recording material. It is configured And it is characterized in and.

  According to this aspect, the recording start position in the scanning direction of the recording head is corrected based on the skew amount of the recording material that varies depending on the conveyance position of the recording material. Accordingly, it is possible to effectively prevent the deviation of the ink landing position in the recording head caused by the skew of the recording material that varies depending on the conveyance position of the recording material. Thereby, in particular, band printing is performed in which the recording material is fed by the same or substantially the same length as the length of the row formed by the plurality of ink ejection holes, and the region corresponding to the row length or the like is printed at a time. When performed, it can be performed with high accuracy. Here, “substantially the same” means a case where transport is performed in which several ink ejection holes at the end in the column length overlap. In this application, this case is also included in band printing.

  According to a second aspect of the present invention, in the recording apparatus according to the first aspect, the control unit performs recording when the recording material is in a first transport state in which a transport force is received only from the transport roller. The recording based on the skew amount of the material and the skew amount of the recording material in the second transport state in which the recording material receives transport force from the transport roller and the discharge roller. A correction value for correcting the recording start position in the scanning direction of the head is set.

  According to this aspect, the skew amount of the recording material caused by the component accuracy of the conveying roller and the discharging roller, the assembling error, and the like is set to the first conveying amount in which the conveying direction and the conveying force acting on the recording material are switched. It is possible to grasp the conveyance state and the second conveyance state in the middle of the conveyance, and perform an effective correction with the optimum correction value in each state.

  According to a third aspect of the present invention, in the recording apparatus according to the first aspect, the control unit is a recording target when the recording material is in a first transport state in which a transport force is received only from the transport roller. The skew amount of the recording material, the skew amount of the recording material in the second transport state in which the recording material receives transport force from the transport roller and the discharge roller, and the recording material Setting a correction value for correcting the recording start position in the scanning direction of the recording head based on the skew amount of the recording material in the third conveying state in which the conveying force is received only from the discharge roller. It is characterized by.

  According to this aspect, the skew amount of the recording material caused by the component accuracy of the conveying roller and the discharging roller, the assembling error, and the like is set to the first conveying amount in which the conveying direction and the conveying force acting on the recording material are switched. It is possible to grasp the conveyance state, the second conveyance state in the middle of conveyance, and the third conveyance state in the final conveyance, and perform effective correction with the optimum correction value in each state.

  According to a fourth aspect of the present invention, in the recording apparatus according to the second aspect or the third aspect, the recording material fed from a feeding unit is placed at the upstream position of the transporting roller. A conveyance guide roller is provided to be transferred to the control unit, and the control unit is configured to incline the recording material in the first conveyance state, the second conveyance state, or the first conveyance state to the third conveyance state. In addition to the line amount, the skew amount of the recording material in the fourth conveyance state in which the recording material receives conveyance force from the conveyance guide roller and the conveyance roller, and the recording material is conveyed The recording start position in the scanning direction of the recording head based on the skew amount of the recording material in the fifth conveyance state receiving conveyance force from the guide roller, the conveyance roller, and the discharge roller Set a correction value to correct The one in which the features.

  According to this aspect, the skew feeding amount of the recording material generated due to the component accuracy of the conveyance guide roller, the conveyance roller, and the discharge roller, the assembly error, or the like is changed to the conveyance initial stage in which the conveyance direction acting on the recording material and the conveyance force are switched. The fourth transport state and the first transport state, and the fifth transport state and the second transport state in the middle of the transport, or the fourth transport state and the first transport state in the initial stage of transport, It can be grasped from the fifth conveyance state and the second conveyance state in the middle of the conveyance, and the third conveyance state in the final conveyance. Accordingly, the ink landing positions at the initial stage and the middle stage of the conveyance become more accurate, and the recording execution quality can be further improved.

FIG. 3 is a side sectional view showing an internal structure of the recording apparatus according to the embodiment of the invention. FIG. 5 is a plan view schematically illustrating the sheet conveyance direction in the first to third conveyance states of the recording apparatus according to the embodiment of the invention. FIG. 4 is a perspective view schematically illustrating a sheet conveyance direction in each of first to third conveyance states of the recording apparatus according to the embodiment of the invention. 6 is a graph showing the relationship between the amount of paper feed and the amount of skew feeding when the leading edge of the paper reaches the recording execution area. FIG. 10 is a schematic diagram illustrating an example of a band printing result based on when the leading edge of the paper reaches the recording execution area. FIG. 4 is a schematic diagram illustrating an example of a correction table and an acquisition method used when acquiring a correction value in the scanning direction of a recording start position. The flowchart which shows an example of the flow which correct | amends a recording start position for every band, and performs recording.

Hereinafter, the recording apparatus according to the present invention will be specifically described with reference to the following examples and drawings.
The illustrated recording apparatus 1 has a so-called nozzle array in which each of a plurality of ink ejection holes (not shown) of the recording head 3 is a length of a line formed in the conveyance direction of a recording material (hereinafter also referred to as “paper”) P. This is an ink jet printer capable of performing band printing in which the recording material P is fed by the length, and the row length region (hereinafter also referred to as “band”) B is printed at once.

  As shown in FIG. 1, the ink jet printer 1 includes a feeding cassette 7 that can store a plurality of sheets P in a horizontal posture at a lower portion of a printer body 5. The sheets P stored in the feeding cassette 7 are pushed upward by a hopper (not shown), and are sequentially fed from the uppermost sheet P by the pressure feeding action between the feeding roller 9 located above and the hopper. Each sheet is fed out toward the sheet conveyance path 11 one by one.

The paper transport path 11 of the ink jet printer 1 extends obliquely rearward toward the upper side, and then reverses the transport path 13 that is laid out to change the direction diagonally forward, and the horizontal that extends horizontally toward the front. And a conveyance path 15.
In the middle of the reverse conveyance path 13, a conveyance guide roller 17 constituted by a pair of nip rollers of a guide driving roller 19 and a guide driven roller 21 is provided.

The conveyance guide roller 17 applies a conveyance force to the paper P supplied to the reverse conveyance path 13 by the feeding roller 9 and conveys the paper P toward a nip point of a conveyance roller 23 described later. Have a role.
In addition, a position sensor 33 that detects passage of the leading edge 29 and the trailing edge 31 of the paper P that has entered the horizontal conveying path 15 is provided upstream of the horizontal conveying path 15. Based on the detection information of the position sensor 33, the transport position of the paper P is known, and the paper length T of the paper P is measured.

At the downstream position of the position sensor 33, the above-described transport roller 23 configured by a pair of nip rollers of a transport drive roller 25 and a transport driven roller 27 is provided.
The transport roller 23 is provided on the upstream side of a recording execution area 35 in which a recording head 3 to be described later is disposed. The transport roller 23 corresponds to the paper P supplied to the horizontal transport path 15 by the transport guide roller 17 described above. Further, it has a role to further convey the sheet P and convey the sheet P toward the downstream recording execution area 35.

In the recording execution area 35, the recording head 3 held by the carriage 37 is provided above, and a paper support member 45 that supports the lower surface of the paper P is provided below.
The recording head 3 is attached to a lower portion of a carriage 37 that reciprocates in a scanning direction C that intersects the transport direction A of the paper P. Each color that extends along the transport direction A of the paper P is attached to the lower surface of the recording head 3. A plurality of ink discharge holes (not shown) corresponding to the inks are formed.

On the other hand, the sheet support member 45 is a rectangular flat plate member, and a plurality of support ribs 47 extending along the conveyance direction A of the sheet P are provided on the upper surface of the sheet support member 45.
The support rib 47 is a member that directly contacts the lower surface of the paper P, and has a role of defining a gap PG between the lower surface of the recording head 3 where the nozzle openings are formed and the recording surface of the paper P. ing.

A discharge roller 49 is provided on the downstream side of the recording execution area 35. The discharge roller 49 is constituted by a pair of nip rollers of a discharge drive roller 51 and a discharge driven roller 53, and applies a conveyance force to the paper P on which recording has been performed, and discharges it outside the printer body 5. Have a role to play.
A plurality of auxiliary driven rollers 55 are also provided upstream of the discharge driven roller 53, and the discharge driven roller 53 and the auxiliary driven roller 55 are arranged on the recording surface of the paper P after recording. For example, a toothed roller is used to reduce damage.

[Example]
Further, the inkjet printer 1 performs control for correcting the recording start position F in the scanning direction C of the recording head 3 based on the skew feeding amount E of the paper P that varies depending on the transport position v (feed amount D) of the paper P. A control unit 57 for execution is provided.
That is, the relationship between the feed amount D of the paper P and the skew feed amount E with the state where the leading edge 29 of the paper P has reached the conveyance start position (so-called cueing position) for recording as shown in FIG. Thus, the actual transport direction of the paper P and the skew amount E vary as shown in the figure depending on the transport position v of the paper P.

Accordingly, when band printing of the ruled line G extending along the conveyance direction A of the paper P is executed without correcting the recording start position F, for example, the ruled line G becomes the bands B1 and B2 as shown exaggeratedly in FIG. ,... Are divided for each B12 and become discontinuous ruled lines indicated by G1 to G12.
Returning to FIG. 4, when the relationship between the feed amount D of the paper P and the skew feeding amount E is reviewed, the transport region R of the paper P is set to the region R1 where the feed amount D is around 0 to 25 mm and the feed amount D is When divided into a region R2 near 25 to 245 mm and a region R3 where the feed amount D is around 245 to 297 mm, the transport direction A and the skew amount E of the paper P are substantially constant for each of these regions R1, R2, and R3. It turns out that it changes with the tendency.

In the region R1, the paper P is transported mainly by receiving the transport force only from the transport roller 23 (the transport state of the paper P at this time is the “first transport state” as described above). ). In the region R2, the paper P is transported mainly by the transport force from the transport roller 23 and the discharge roller 49 (the transport state of the paper P at this time is “second as described above”). Transport state)).
In the region R3, the paper P is transported mainly by receiving the transport force only from the discharge roller 49 (the transport state of the paper P at this time is the “third transport state” as described above). ).

Accordingly, the conveyance direction A and the skew amount E of the paper P in each of the regions R1, R2, and R3, as shown in an exaggerated manner in FIG. 3, the magnitude of the conveyance force and the conveyance direction that the conveyance roller 23 has. It is understood that A1, the magnitude of the conveyance force of the discharge roller 49, and the conveyance direction A2 are deeply related.
Therefore, in this embodiment, the control unit 57 uses the skew amount E1 of the paper P in the first transport state, the skew amount E2 of the paper P in the second transport state, and the Based on the skew amount E3 of the paper P in the third transport state, the correction values H1 to H12 of the recording start positions F1 to F12 for the respective bands B1 to B12 in the scanning direction C of the recording head 3 are set. Is configured to do.

Note that the skew amount E can be divided into regions R1, R2, and R3 as described above. In this case, the individual correction values H1 to H12 for the bands B1 to B12 are obtained from the tendency of the skew amount E for each of the regions R1, R2, and R3.
Specifically, when the band printing sample result as shown in FIG. 5 is obtained, in the region R1, the recording start position F1 is taken as the reference point O, the correction value H1 = 0, and the ruled line G1 Perform recording. In the region R2, first, in the band B2, a correction value H2 = 0.05 mm is obtained from the skew amount E1 = −0.05 mm of the region R1, and a reference line extending from the reference point O along the transport direction A. The recording start position F2 is taken on L.

Next, in the band B3, a correction value H3 = H2−0.1 mm = −0.05 mm is obtained from the skew amount E1 = −0.05 mm of the region R1 and the skew amount E2 = 0.1 mm of the region R2. The recording start position F3 is taken on the reference line L.
Hereinafter, in the bands B4 to B10, the correction value H4 = H3−0.1 mm = −0.15 mm and the correction value H5 = H4−0.1 mm = −0 based on the skew amount E2 = 0.1 mm of the region R2. ... 25 mm,... Correction value H10 = H9−0.1 mm = −0.75 mm are obtained and recording start positions F4, F5,.

In the region R3, the skew amount E23 affected by both the skew amount E2 in the second transport state and the skew amount E3 in the third transport state, and the skew amount in the third transport state. E3 exists. Accordingly, in the band B11, the correction value H11 = H10−0.15 mm = −0.9 mm is obtained based on the skew amount E23 = 0.15 mm, and the recording start position F11 is taken on the reference line L.
On the other hand, in the band B12, the correction value H12 = H11−0.3 mm = −1.2 mm is obtained based on the skew amount E3 = 0.3 mm, and the recording start position F12 is taken on the reference line L. Then, by adopting the recording start position F corrected in this way, a continuous ruled line G as shown by a two-dot chain line in FIG. 5 is recorded over the entire recording surface of the paper P.

Further, the skew amount E can be finely divided, and can be divided into bands B1 to B12, or can be divided into finer areas S1, S2,... Sn as shown in FIG. is there.
In FIG. 6, the paper length of the paper P is set to T, and the paper length T is divided into n equal parts as an example to provide fine regions S1, S2,. Further, the current transport position of the sheet P with reference to the reference point O is v, the section start position of the area S1 is 0, the section end position is a, the correction amount per inch is h1, and the section start position of the area S2 A, the section end position is b, the correction amount is h2, the section start position of the area S3 is b, the section end position is c, the correction amount is h3, and the section start position of the area Sn-1 is {(n-2) / n} T, the section end position is {(n-1) / n} T, the correction amount is hn-1, the section start position of the region Sn is {(n-1) / n} T, the section end position is T, The correction amount is hn.

For example, in the state of 0 <v ≦ a where the leading edge 29 of the paper P is located in the region S1, the correction value H1 to be obtained is (v / 25.4) × h1.
Further, in the state of a <v ≦ b where the leading edge 29 of the paper P is located in the region S2, the correction value H2 to be obtained is (a / 25.4) × h1 + {(v−a) /25.4} ×. It becomes h2.
When b <v ≦ c where the leading edge 29 of the paper P is located in the region S3, the correction value H3 to be calculated is (a / 25.4) × h1 + {(ba) /25.4} ×. h2 + {(v−b) /25.4} × h3.
In the state of {(n−1) / n} T <v ≦ T where the leading edge 29 of the paper P is located in the region Sn, the correction value Hn to be obtained is (a / 25.4) × h1 + {(b −a) /25.4} × h2 + {(c−b) /25.4} × h3 +... + [{V − {(n−1) / n} T} /25.4}] × hn .

  In FIG. 6, since the intervals of the respective regions S1, S2, S3,... Sn are all the same, a = ba−c−b = T − {(n−1) / n} T = T / n is there. Therefore, the correction value H3 is {(T / n) /25.4} (h1 + h2) + {(v−b) /25.4} × h3, and the correction value Hn is {(T / n) / 25.4} (h1 + h2 +... + Hn−1) + [{v − {(n−1) / n} T} /25.4] × hn.

Next, an example of a flow for executing the recording of the paper P by correcting the recording start position F for each band B based on the flowchart of FIG. First, in step S01, the sheet length T is acquired by setting information by the user, the position sensor 33, and the like, and the control unit 57 receives the acquired information of the sheet length T. In step S02, the leading edge 29 of the paper P is transported to the reference point O which is the transport start position for recording based on the acquisition information of the paper length T and the positional information by the position sensor 33. The band B1 is conveyed and recorded.
In step S03, the control unit 57 receives the first paper conveyance amount data 1, and stores the paper conveyance amount data 1 in step S04.

In step S05, the sheet conveyance amount data 1 is cumulatively added to obtain the next sheet conveyance amount data 2. The correction value H is acquired in step S06 based on the acquired sheet conveyance amount data 2. In acquiring the correction value H, the correction value H is acquired on the basis of the skew profile of the paper P shown in FIG. 4, the recording result sample shown in FIG. 5, the correction table shown in FIG.
In step S07, the paper P is transported based on the paper transport amount data 1, and the recording execution start position F of the next band B is corrected based on the correction value H in step S08.

In step S09, the recording execution data of the band B is transmitted from the printer driver to the recording head 3. After the transmission of the recording execution data to the recording head 3, the corrected recording start position F is based on the correction. To record the second band B2.
If the transmission of the recording execution data has not been completed, the process returns to step S03, and the processes from steps S03 to S09 are repeated. Thereafter, similarly, the correction of the recording start position F of the subsequent band B, the conveyance of the paper P, and the execution of the recording are sequentially repeated, and the band printing for all the paper lengths T of the paper P is executed.

[Other examples]
The recording apparatus 1 according to the present invention is basically configured to have the above-described configuration, but of course, the partial configuration may be changed or omitted without departing from the gist of the present invention. Is possible.
For example, when setting the correction value H of the recording start position F for each band B in the scanning direction C of the recording head 43, the skew feeding amount E1 of the paper P in the first transport state and the second transport are described above. It is possible to set based on the skew amount E2 of the paper P in the state.

  Further, when the influence on the skew feeding amount E of the paper P by the transport guide roller 17 is taken into consideration, the control unit 57 performs the third from the first and second transport states or the first transport state. In addition to the skew feeding amounts E1, E2, and E3 of the paper P in the transport state, the paper P receives a transport force from the transport guide roller 17 and the transport roller 23 in the fourth transport state. The skew amount E4 of the sheet P and the skew of the sheet P in the fifth transport state in which the sheet P receives transport force from the transport guide roller 17, the transport roller 23, and the discharge roller 49. It is also possible to correct the recording start position F in the scanning direction C of the recording head 43 based on the amount E5.

  In each of the embodiments described above, the case of performing band printing has been described. However, although the effect of the present invention can be said to be particularly great in the band printing 7, it can also be obtained in the recording that is not band printing but transports with a large overlap amount with respect to the column length. In other words, if the recording start position in the scanning direction of the recording head is corrected based on the skew amount of the recording material that varies depending on the transport position of the recording material, the ink in the recording head caused by the skew of the recording material It is possible to prevent the deviation of the landing position. Therefore, the present invention can also be applied to recording that is not band printing in which a recording material is sent by a predetermined amount and recording is performed.

  Specifically, the recording material is fed by half or more of the column length of the ink discharge holes, and the portion corresponding to the column length is recorded at once, thereby obtaining the error diffusion effect on the overlapping portion. The present invention can also be applied to recording that is similar to band printing.

In the above-described embodiment, as an example of the carriage 37, the correction in the scanning direction C of the recording start position F is performed on the assumption that the recording is performed during the forward travel. However, the recording is also performed when the carriage 37 travels in the backward travel. In this case, it is also possible to employ two types of correction values H that take into account differences in the scanning direction of the carriage 37 and changes in travel speed.
If there is a difference in the skew amount E of the paper P depending on the type, size, or thickness of the paper P, a plurality of correction values H corresponding to the type, size, or thickness of the paper P are prepared. It is also possible to select and use the optimum one among them.

1 inkjet printer (recording device), 3 recording head,
5 Printer body, 7 Feed cassette, 9 Feed roller,
11 paper transport path, 13 reverse transport path, 15 horizontal transport path,
17 transport guide roller, 19 guide drive roller,
21 guide driven roller, 23 transport roller, 25 transport drive roller,
27 driven roller for conveyance, 29 tip, 31 rear end, 33 position sensor,
35 recording execution area, 37 carriage, 45 paper support member,
47 support ribs, 49 discharge rollers, 51 drive rollers for discharge,
53 discharge driven roller, 55 auxiliary driven roller, 57 control unit,
P paper (recording material), B band (area), A transport direction, C scanning direction,
PG gap, D feed amount, E skew amount, H correction value, T paper length,
F recording start position, O reference point, L reference line, G ruled line,
R (transport) area, S (fine) area, v transport position, h correction amount

Claims (4)

A recording head that performs recording by ejecting ink from a plurality of ink ejection holes arranged in a row on the recording surface of the recording material while reciprocating in a direction intersecting the conveyance direction of the recording material; ,
A conveyance roller that is provided on the upstream side of the recording head and conveys a recording material toward the recording head;
A discharge roller provided on the downstream side of the recording head and discharging the recording material to the downstream side;
A control unit for controlling the ink ejection operation in the recording head,
A recording apparatus that sends a recording material by a predetermined amount and executes recording,
The control unit is configured to correct a recording start position in the scanning direction of the recording head based on a skew amount of the recording material that varies depending on a conveyance position of the recording material. apparatus. The recording apparatus according to claim 1,
The control unit includes a skew amount of the recording material in a first conveyance state in which the recording material receives a conveyance force from only the conveyance roller, and
Recording starts in the scanning direction of the recording head based on the skew amount of the recording material in the second conveyance state in which the recording material receives conveyance force from the conveyance roller and the discharge roller A recording apparatus, wherein a correction value for correcting a position is set. The recording apparatus according to claim 1,
The control unit includes a skew amount of the recording material in a first conveyance state in which the recording material receives a conveyance force from only the conveyance roller, and
The skew amount of the recording material in the second conveyance state in which the recording material receives a conveyance force from the conveyance roller and the discharge roller;
Correction for correcting the recording start position in the scanning direction of the recording head based on the skew amount of the recording material in the third conveyance state in which the recording material receives a conveyance force only from the discharge roller A recording apparatus characterized by setting a value. The recording apparatus according to claim 2 or 3,
At the upstream position of the transport roller, a transport guide roller is provided that delivers the recording material fed from the feeding section to the transport roller,
In the control unit, in addition to the skew amount of the recording material in the first transport state and the second transport state or the first transport state to the third transport state,
The skew amount of the recording material in the fourth transport state in which the recording material receives transport force from the transport guide roller and the transport roller;
The recording head of the recording head based on the skew amount of the recording material in the fifth conveyance state in which the recording material receives a conveyance force from the conveyance guide roller, the conveyance roller, and the discharge roller. A recording apparatus that sets a correction value for correcting a recording start position in a scanning direction.

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