JPH0538853A - Recording apparatus - Google Patents

Abstract

PURPOSE:To enable printing of high accuracy as far as the trailing end of a printing medium by precisely transferring the recording medium even when it is transferred only by a pair of delivery rollers. CONSTITUTION:When a recording medium 2 is transferred by driving a pair of transfer rollers 4a1,4a2 on the upstream side of a recording position in the transfer direction of the medium 2 and a pair of delivery rollers 4b1,4b2 on the downstream side and when the medium 2 is held and transferred by the rollers 4a1,4a2 and the rollers 4b1, 4b2, the drive of the roller 4b1 is set at a larger value to some extent than the roller 4a1. And when the trailing end of the medium 2 has passed a rear end sensor 8 and is being transferred only by the rollers 4b1,4b2, the driving speed and driving rate of the roller 4b1 is set at a value equal to that of the roller 4a1.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a recording apparatus for conveying a recording medium for recording, and more particularly to a recording apparatus for accurately conveying a recording medium for recording.

[0002]

2. Description of the Related Art Various recording systems used in electronic typewriters and printers have been developed. Among them, the serial recording system has been widely used in recent years because it is easy to downsize the device.

As shown in FIG. 6, a serial recording apparatus generally conveys a recording medium 52 by a pair of upstream side conveying rollers 50a, 50b and a pair of downstream side conveying rollers 51a, 51b, and a recording supported on the back side by a platen 53. Recording is performed by reciprocally moving the recording head 54 in the recording medium width direction (front and back direction of paper in FIG. 6) with respect to the medium 52, and after one line of recording, the pair of conveying rollers 50a, 50b, 51.
The recording medium 52 is conveyed in the direction of the arrow for one line by rotating a and 51b by a predetermined amount, and recording is performed in the same manner.

In the above device, the recording medium 52 to be conveyed
The upstream transport roller pair 50 so that the
a, 50b downstream conveying roller pair 51 with respect to the rotational peripheral speed
The rotational peripheral speeds of a and 51b are set to be slightly higher. Even in this case, since the recording medium nip force of the upstream side transport roller pair 50a, 50b is set to be larger than the nip force of the downstream side transport roller pair 51a, 51b, the recording medium 52 is set to the upstream side transport roller pair 50a. , 50b according to the peripheral speed of rotation.

[0005]

In the above-mentioned device,
There is no problem while the trailing edge of the recording medium 52 is nipped by the upstream conveying rollers 50a and 50b as shown in FIG. 6A, but as shown in FIG. After exiting from the nip portion of the upstream side transport roller pair 50a, 50b,
It is transported by the downstream transport roller pair 51a, 51b.

At this time, since the rotational peripheral speeds of the downstream side conveying roller pairs 51a and 51b are set to be large in order to prevent slack as described above, if the number of drive pulses of the pulse motor is the same, The carry amount becomes large, and it is not possible to satisfy the high-precision carry amount. Therefore, the high-accuracy recordable range on the recording medium 52 is such that the rear end of the recording medium 52 can be conveyed by the upstream conveying roller pair 50a, 50b, and a large margin is generated at the rear end of the recording medium 52. There was a problem that it ended up.

The object of the present invention is to solve the above-mentioned conventional problems,
It is an object of the present invention to provide a recording device capable of highly accurate recording over the entire area of a recording medium.

[0008]

A typical means according to the present invention for solving the above-mentioned problems is a recording means for recording on a recording medium, and a conveyance of the recording medium rather than a recording position by the recording means. A first conveying member disposed on the upstream side in the direction,
A conveying means for providing a conveying force to the recording medium, and a detection means for detecting the trailing end of the recording medium conveyed by the conveying means. Means and control means for changing the drive setting of the downstream side transport member before and after the trailing edge of the recording medium detected by the detection means during transport of the recording medium passes through the upstream side transport member. It is characterized by having.

[0009]

In the above-mentioned means, the recording medium is conveyed by the rotation of the first conveying member before the trailing edge of the recording medium passes through the first conveying member, and at this time, the second conveying member makes the first conveying member. The member rotates at a slightly higher speed to apply tension to the recording medium. On the other hand, after the trailing edge of the recording medium has passed the first transport member, the rotation of the second transport member is set to the same speed as that of the first transport member, so that high accuracy is achieved even at the trailing edge of the recording medium. This makes it possible to carry the sheet and perform high-precision recording over the entire area of the recording medium.

[0010]

EXAMPLE An example of the present invention to which the above means is applied will be described below. [First Embodiment] As a first embodiment, a recording apparatus using an inkjet recording system as a recording means will be described. (Overall Description) First, the overall apparatus will be described with reference to FIGS. 1 and 2. Incidentally, FIG. 1 is a schematic configuration diagram of the entire apparatus, and FIG. 2 is a configuration diagram of the transporting means.

This apparatus, as shown in FIG.
The recording mediums 2 stacked inside are fed one by one by a pickup roller 3, which is conveyed by a conveying means 4, and the recording means 6 reciprocates with respect to the recording medium 2 whose back surface is supported by a platen 5. Then, the recording medium 2 after recording is ejected to the ejection tray 7. In this recording apparatus, as will be described later, when the trailing edge sensor 8 which is the detecting means detects the trailing edge of the recording medium 2, the control section controls the downstream side conveying roller pair 4b1 of the conveying means 4 according to the signal. It is configured to change the rotation speed of.

Next, the configuration of each of the above parts will be specifically described. (Conveying Means) As shown in FIG. 1, the conveying means 4 is arranged on the upstream side in the conveying direction of the recording medium 2 with respect to the recording position, and is a pair of conveying rollers that is a first conveying member that conveys the recording medium 2 to the recording position. 4a1 and 4a2, and discharge roller pairs 4b1 and 4b2, which are second conveying members disposed downstream of the recording position and discharging the recording medium 2 after recording to the discharge tray 7.

As shown in FIG. 2, the transport lower roller 4a1 is connected to the transport roller driving motor 4d1 by the timing belt 4c1, and the discharge lower roller 4b1 is coupled to the discharge roller driving motor 4d2 by the timing belt 4c2. The stepping motors 4d1 and 4d2 are driven to rotate. The upper transport roller 4a2 and the upper discharge roller 4b2 are driven rollers which are pressed by the lower transport roller 4a1 and the lower discharge roller 4b1 by a leaf spring (not shown) or the like. As a result, the roller driving motors 4d1 and 4d2
When is driven, the recording medium 2 is conveyed in the direction of the arrow in FIG.

When the recording medium is conveyed, the discharging lower roller 4b1 normally rotates at a peripheral speed slightly higher than that of the conveying lower roller 4a1 to apply tension to the recording medium 2 to loosen the recording medium 2 at the recording position. I try not to. Even with this setting, the nip force of the recording medium 2 is still the same as that of the transport roller pair 4a
Since 1 and 4a2 are set stronger than the discharge roller pair 4b1 and 4b2, the recording medium 2 is controlled by the rotational peripheral speed of the lower conveyance roller 4a1.

(Recording Means) The recording means 6 is the conveying means 4
The ink image is recorded on the recording medium 2 conveyed by the carriage 6. In this apparatus, as shown in FIG. 1, the carriage 6b is moved along a guide rail 6a provided in parallel with the platen 5 (front and back direction of the paper surface of FIG. 1). A serial type inkjet recording method is used in which the recording head 6c reciprocates and ink droplets are ejected from the recording head 6c in synchronization with the movement to perform recording.

The recording head 6c generates a fine liquid discharge port (orifice), a liquid passage and an energy acting portion provided in a part of the liquid passage, and a droplet forming energy to act on the liquid in the acting portion. Equipped with energy generation means. As an energy generating means for generating such energy, a recording method using an electromechanical transducer such as a piezo element, irradiation with electromagnetic waves such as laser to generate heat,
Recording method using an energy generating means for ejecting liquid droplets by the action of heat generation, or recording using an energy generating means for heating a liquid by an electrothermal converter such as a heating element having a heating resistor to eject the liquid. There are ways. Among them, a recording head used in an inkjet recording method for ejecting a liquid by heat energy has a high density of liquid ejection ports (orifices) for ejecting recording liquid droplets to form ejection liquid droplets. Therefore, it is possible to record at high resolution. Among them, the recording head using the electrothermal converter as the energy generating means can be easily made compact, and the technological progress and the reliability improvement in the recent semiconductor field are remarkable.
You can fully utilize the advantages of C technology and micro processing technology,
This is advantageous because high-density mounting is easy and the manufacturing cost is low.

The recording width of one scan of the recording head 6c is W, and the recording medium 2 is intermittently conveyed by a distance W for each scan of the recording head 6c corresponding to the recording width W.

(Detection means) The pair of conveying rollers 4a1 and 4a2
A trailing edge sensor 8 is arranged on the upstream side of the recording medium 2 in the transport direction. The sensor 8 is turned on when the recording medium 2 is at the sensor position, and is turned off when the recording medium 2 is not present. Therefore,
The trailing edge of the recording medium 2 is detected when the sensor 8 switches from on to off. In the present embodiment, the distance L from the sensor 8 to the nip portion of the pair of conveying rollers 4a1 and 4a2 is substantially equal to the recording width W of the recording head 6b.

In this embodiment, the recording medium 2 is intermittently fed by the length W. While the trailing edge sensor 8 is detecting the recording medium 2, the rotation peripheral speed of the discharge roller 4b1 is set to the conveying roller 4a1.
Is set to be higher than the rotational peripheral speed of, and after the rear end sensor 8 detects the rear end of the recording medium 2, the drive control is performed so that the rotational peripheral speed of the discharge roller 4b1 becomes the same as that of the transport roller 4a1.

To explain this in detail, when the recording medium 2 is fed, as shown in FIG.
It is nipped and conveyed only by 1 and 4a2, and as recording proceeds, it is nipped and conveyed by both the conveying roller pair 4a1 and 4a2 and the discharge roller pair 4b1 and 4b2 as shown in FIG. 3B. When the recording is further advanced, the trailing edge of the recording medium 2 approaches the trailing edge sensor 8 as shown in FIG. 3C, but in this state, the trailing edge sensor 8 is in the ON state, and the remaining amount X of the recording medium 2 is X. Is longer than the recording width W (X> W). Therefore, even if the next intermittent feeding (conveyance of length W) is performed, the trailing end of the recording medium 2 is conveyed by the conveyance roller pair 4.
It is nipped and conveyed by a1 and 4a2.

When recording is further advanced, the trailing edge of the recording medium 2 reaches the downstream side of the trailing edge sensor 8 as shown in FIG. 3D, and the sensor 8 is turned off. In this state, the remaining amount X of the recording medium 2 is smaller than the recording width W (X <W), and when the next intermittent feeding (conveyance of length W) is performed in this state, the recording medium 2 is conveyed by the conveying roller pair 4a1. , 4a2, and is nipped and conveyed only by the pair of discharge rollers 4b1 and 4b2. Furthermore, FIG.
In the state of (e), the trailing edge of the recording medium 2 completely comes out of the pair of conveying rollers 4a1 and 4a2 and is nipped and conveyed only by the pair of discharging rollers 4b1 and 4b2.

Therefore, in the case of FIGS. 3 (a) to 3 (c),
That is, when the trailing edge sensor 8 is in the ON state, the recording medium 2 is nipped and conveyed by the pair of conveying rollers 4a1 and 4a2. Therefore, the rotation speed and the rotation amount of the pair of discharging rollers 4b1 and 4b2 are slightly smaller than those of the pair of conveying rollers 4a1 and 4a2. The speed is set so that the recording medium 2 is tensioned. On the other hand, FIG.
In the case of (e), that is, when the trailing edge sensor 8 is in the OFF state, the recording medium 2 is nipped and conveyed only by the discharge roller pairs 4b1 and 4b2. Therefore, when the discharge roller pairs 4b1 and 4b2 are driven in the same manner as described above, recording is performed. The medium 2 is sent too much. Therefore, the conveyance amount of the recording medium 2 by the discharge roller pairs 4b1 and 4b2 is set again so that it is the same as that of the conveyance roller pairs 4a1 and 4a2. As a result, accurate conveyance can be performed even after the rear end of the recording medium 2 has passed through the pair of conveyance rollers 4a1 and 4a2.

(Control Means) Next, a control system for driving each section as described above will be described with reference to FIG. In FIG. 4, reference numeral 9 is a control unit, which includes a CPU 9a and a ROM.
9b and RAM 9c. The CPU 9a is a central processing unit, and is an external device such as a ROM 9b or an input device described later.
The program and various data are read from 10 etc., necessary calculations and judgments are performed, and various controls are performed. ROM9
Reference numeral b denotes a read-only memory, which stores various programs for operating the CPU 9a, such as various programs shown in the flowchart of FIG. 5, character codes, and various data necessary for dot pattern recording. The RAM 9c is a read / write memory, and has a working area in which the CPU 9a temporarily stores the data in the instruction and the operation result, a buffer area in which various data input from the external device 10 and the like, a document and the like are stored. It consists of a text area to put.

The control unit 9 inputs an image signal from the external device 10 through the interface 11, various information such as the recording density and the line feed amount for one line from the operation unit 12, and the rear end. The detection signal from the sensor 8 is input. Then, the control section 9 drives a motor driver 14 through an interface 11 to drive and control each motor (transport roller driving motor 4d1, discharge roller driving motor 4d2, carriage motor 13 for reciprocating the carriage 6b, etc.). A signal is output and an image signal is output to the head driver 15 that drives and controls the recording head 6c to drive each unit.

(Conveying Recording Operation on Recording Medium) Next, the operation of each section when recording is performed by the apparatus having the above-mentioned configuration will be described with reference to FIG. Incidentally, FIG. 5 is a flowchart showing a recording operation procedure.

As shown in the flow chart of FIG. 5, in step S1, the roller driving motors 4d1 and 4d2 are driven to feed the recording medium 2 to the recording position. At this time, the rotation speed and the rotation amount of the discharge roller pair 4b1 and 4b2 are set to be slightly higher than those of the conveyance roller pair 4a1 and 4a2.
When the recording medium 2 is fed, in step S2, the carriage motor 13 is driven to scan the carriage 6b, and the recording head 6c is driven to record one line on the recording medium 2.

Next, the recording medium 2 is conveyed by one line and the next line is recorded. In step S3, it is determined whether the trailing edge sensor 8 is in the on or off state. In step S4, the recording medium 2 is conveyed by the recording width W, and the process returns to step S2 to perform the next line recording. At this time, the recording medium 2
Is in the state shown in FIGS.

In the intermittent feeding in step S4, the number of drive pulses of the stepping motor 4d2 for driving the discharging roller 4b1 is increased by several pulses with respect to the stepping motor 4d1 for driving the conveying roller 4a1 (the rotation amount increases). ), And the pulse application time is set to be slightly longer. That is, the rotational angular velocities are the same and the rotation amount is set large.
As a result, the recording medium 2 is conveyed in accordance with the rotation of the pair of conveying rollers 4a1 and 4a2, and is conveyed while being tensioned by the rotation of the pair of discharging rollers 4b1 and 4b2.

On the other hand, when the trailing edge sensor 8 is in the off state in the step S3, the recording medium 2 is shown in FIG.
Since it is in the state of (e), the process proceeds to step S5, and the rotations of the discharge roller pairs 4b1 and 4b2 are made to coincide with those of the transport roller pairs 4a1 and 4a2. That is, the number of driving pulses of the stepping motor 4d2 is decreased by several pulses, and the pulse application time is also decreased so that the discharge roller pairs 4b1 and 4b2 are moved to the conveying roller pairs 4a1 and 4b.
Change the drive setting so that it rotates at the same speed and the same amount as a2. By changing the settings in this way, the recording medium 2 nipped and conveyed only by the discharge roller pairs 4b1 and 4b2 is conveyed at the same speed and the same conveyance amount as when conveyed by the conveyance roller pairs 4a1 and 4a2. ..

Then, in step S6, the recording medium 2 is length W
The sheets are conveyed by a minute, and recording is executed in step S7. Next, in step S8, it is determined whether or not the next line recording is possible. If it is possible, the process returns to step S6 to execute the next line recording,
If not possible, the process proceeds to step S9 and the recording medium 2 is ejected.

As described above, when the trailing edge of the recording medium 2 is nipped and conveyed only by the discharge roller pairs 4b1 and 4b2, the roller pair 4 is conveyed.
By changing the rotation speed of b1 and 4b2, the recording medium 2
It is possible to accurately convey the recording medium and to perform high-precision recording up to the vicinity of the rear end of the recording medium 2.

[Other Embodiments] In the above embodiment, when the trailing edge sensor 8 is in the ON state, the number of drive pulses of the discharge roller driving motor 4d2 is increased with respect to the driving of the conveying roller driving motor 4d1, and An example is shown in which the pulse application time is set to be long and the number of pulses and the pulse application time are set to be the same as those of the conveyance roller driving motor 4d1 after the trailing edge sensor 8 is turned off. You may set as follows.

When the trailing edge sensor 8 is in the ON state, when the recording medium 2 is conveyed, the pulse application time of the discharge roller driving motor 4d2 is equal to the driving of the conveying roller driving motor 4d1 and the number of pulses is slightly increased. Set. That is, the rotational angular velocity is set to be high. At this time, the conveying amount of the discharge roller pair 4b1 and 4b2 with respect to the recording medium 2 becomes slightly larger than that of the conveying roller pair 4a1 and 4a2, and tension is applied to the recording medium 2.

When the rear end sensor 8 is turned off,
The number of pulses of the discharge roller driving motor 4d2 is changed to the same setting as that of the conveyance roller driving motor 4d1. As a result, the discharge roller pairs 4b1 and 4b2 rotate at the same speed and the same rotation amount as the conveying roller pairs 4a1 and 4a2, and the same effect as that of the above-described embodiment can be obtained.

Further, although the ink jet recording method is used as the recording means in the above-mentioned embodiment, the electrothermal converter is energized in response to a recording signal, and bubbles are generated due to heating beyond the film boiling by the electrothermal converter. More preferably, the ink is ejected from the ejection port to perform recording.

With regard to its typical structure and principle, it is preferable to use the basic principle disclosed in, for example, US Pat. Nos. 4,723,129 and 4740796. This method can be applied to both the so-called on-demand type and continuous type, but in the case of the on-demand type in particular, it is arranged corresponding to the sheet or liquid path holding the liquid (ink). By applying at least one drive signal to the electrothermal transducer, which corresponds to the recorded information and provides a rapid temperature rise beyond nucleate boiling,
This is effective because heat energy is generated in the electrothermal converter to cause film boiling on the heat acting surface of the recording head, and as a result bubbles in the liquid can be formed in a one-to-one correspondence with this drive signal. Due to the growth and contraction of the bubbles, the liquid is ejected through the ejection opening to form at least one droplet. It is more preferable to make this drive signal into a pulse shape because bubbles can be grown and contracted immediately and appropriately, so that particularly excellent liquid ejection can be achieved.

As the pulse-shaped drive signal, those described in US Pat. Nos. 4,463,359 and 4,345,262 are suitable. If the conditions described in US Pat. No. 4,313,124 of the invention relating to the rate of temperature rise of the heat acting surface are adopted, more excellent recording can be performed.

As the constitution of the recording head, in addition to the combination constitution of the discharge port, the liquid passage, and the electrothermal converter (the linear liquid passage or the right-angled liquid passage) as disclosed in the above-mentioned respective specifications. The present invention also includes configurations using US Pat. Nos. 4,558,333 and 4,459,600, which disclose configurations in which the heat acting portion is arranged in a bending region. Further, JP-A-59-123670 discloses a structure in which a common slit is used as a discharge portion of a plurality of electrothermal converters, and a discharge portion having an opening for absorbing a pressure wave of thermal energy is disclosed. The effect of the present invention is effective even if the configuration based on Japanese Patent Laid-Open No. 59-138461, which discloses the configuration corresponding to the above, is adopted. That is, according to the present invention, recording can be reliably and efficiently performed regardless of the form of the recording head.

Further, the present invention can be effectively applied to a full line type recording head having a length corresponding to the maximum width of a recording medium which can be recorded by the recording apparatus. Such a recording head may have a configuration that satisfies the length by combining a plurality of recording heads or a configuration as one recording head integrally formed.

In addition, even in the case of the serial type described above, it is possible to electrically connect to the apparatus main body and supply ink from the apparatus main body by mounting the recording head fixed to the carriage or the carriage. A replaceable chip type recording head or a cartridge type recording head in which an ink tank is integrally provided in the recording head itself may be used.

Further, it is preferable to add recovery means for the recording head, preliminary auxiliary means, etc., which are provided as a constituent of the recording apparatus of the present invention, because the effects of the present invention can be further stabilized. Specific examples thereof include a capping unit for the recording head, a cleaning unit, a pressurizing or suction unit, an electrothermal conversion type or a heating element other than this, or a preheating unit using a combination thereof,
It is also effective to perform stable recording by performing a preliminary ejection mode in which ejection is performed separately from recording.

Regarding the type and number of recording heads mounted on the carriage, for example, only one recording head is provided corresponding to a single color ink, or a plurality of inks having different recording colors and densities are supported. And a plurality of them may be provided. That is, for example, the recording mode of the recording apparatus is not limited to a recording mode of only the mainstream color such as black, but may be a combination of a plurality of recording heads integrally formed, but a mixed color of different colors or a mixed color It is also applicable to a device having at least one of the full colors according to

In addition, although the ink is described as a liquid in the above-described embodiments, it is an ink that solidifies at room temperature or lower and softens or liquefies at room temperature, or in the ink jet recording system. 30 inks
It is common to adjust the temperature within the range of ℃ to 70 ℃ to control the viscosity of the ink so that it is in the stable ejection range. good. In addition, it is possible to prevent the temperature rise due to thermal energy from being positively used as the energy for changing the state of the ink from a solid state to a liquid state, or to use ink that solidifies when left standing for the purpose of preventing ink evaporation. However, in any case, when heat ink is liquefied by application of heat energy according to a recording signal and liquid ink is ejected, or when the ink reaches a recording sheet, it begins to solidify. It is also applicable when using an ink that has the property of being liquefied for the first time by energy.

The ink in such a case is disclosed in JP-A-54-5.
As described in Japanese Patent Publication No. 6847 or Japanese Patent Laid-Open Publication No. Sho 60-71260, a mode in which the porous sheet is opposed to the electrothermal converter in a state of being held as a liquid or a solid in the concave portion or the through hole. Also good. The most effective one for each of the above-mentioned inks is to execute the above-mentioned film boiling method.

Further, as a form of the above-mentioned ink jet recording apparatus, besides the one used as an image output terminal of an information processing apparatus such as a computer, a copying apparatus combined with a reader or the like, and further a facsimile apparatus having a transmitting / receiving function. It may be a form or the like.

Although an example of using the ink jet recording system as the recording means has been described above, the recording system of the present invention is not limited to the ink jet recording system, and other thermal transfer recording system, thermal recording system, and Can also be applied to a recording method other than the non-impact recording method such as the wire dot recording method. Further, it is not necessary to limit to the serial recording method, and a so-called line recording method may be used.

[0047]

As described above, according to the present invention, when the recording medium is conveyed only by the downstream conveying member, the feeding amount or the feeding speed of the recording medium by the conveying member is changed,
It is possible to accurately convey the recording medium and accurately record to the rear end of the recording medium.

[Brief description of drawings]

FIG. 1 is a schematic diagram illustrating a configuration of a recording apparatus according to an embodiment of the invention.

FIG. 2 is an explanatory diagram of a configuration of a transport unit.

FIG. 3 is an explanatory diagram of a recording medium conveyance operation.

FIG. 4 is a block diagram of a control configuration.

FIG. 5 is a flowchart of a recording medium conveyance and recording procedure.

FIG. 6 is an explanatory diagram of a conventional technique.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Cassette 2 ... Recording medium 3 ... Pickup roller 4 ... Conveying means 4a1, 4a2 ... Conveying rollers 4b1, 4b2 ... Ejecting roller 4c1, 4c2 ... Timing belt 4d1, 4d2 ... Stepping motor 5 ... Platen 6 ... Recording means 6a ... Guide rail 6b ... Carriage 6c ... Recording head 7 ... Ejection tray 8 ... Rear end sensor 9 ... Control unit

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Seiichiro Adachi 3-30-2 Shimomaruko, Ota-ku, Tokyo Canon Inc.

Claims (4)

[Claims] 1. A recording unit for performing recording on a recording medium, a first conveying member arranged upstream of a recording position of the recording unit in the conveying direction of the recording medium, and arranged downstream of the conveying direction. A conveyance means for applying a conveyance force to the recording medium, a detection means for detecting the trailing end of the recording medium conveyed by the conveyance means, and a conveyance of the recording medium. At this time, the trailing edge of the recording medium detected by the detecting means includes control means for changing the drive setting of the downstream side transport member before and after passing through the upstream side transport member. apparatus. 2. The recording apparatus according to claim 1, wherein the recording apparatus is an inkjet recording system in which a recording unit ejects ink in accordance with a signal to perform recording. 3. The recording apparatus is an ink jet recording system in which a recording unit energizes an electrothermal converter in response to a signal and ejects ink by utilizing thermal energy generated by the electrothermal converter for recording. The recording device according to claim 2. 4. The recording device ejects ink from an ejection port by the recording means energizing the electrothermal converter in response to a signal, and the growth of bubbles caused by heating beyond film boiling by the electrothermal converter. The recording apparatus according to claim 3, wherein the recording apparatus is an inkjet recording method for performing recording.