JP6303370B2 - Recording device - Google Patents

Description

  The present invention relates to a recording apparatus that records an image on a recording medium.

  Patent Document 1 discloses a first image forming unit that includes a recording head that ejects ink, and a second image that includes a photosensitive drum and a transfer roller that are arranged on the downstream side of the conveyance path of the recording medium relative to the first image forming unit. The image forming apparatus includes an image forming unit and an ink removing unit for removing ink droplets attached to the photosensitive drum. In this image forming apparatus, a monochrome image is formed on a recording medium by a second image forming unit using an electrophotographic method, and a color image is formed by a first image forming unit using an inkjet method. The ink removing unit removes the ink attached to the photosensitive drum by the web body that wipes the photosensitive drum.

JP-A-8-272258

  However, even with such an ink removing means, it is very difficult to completely remove ink from the photosensitive drum. If ink remains on the photosensitive drum, the electrostatic latent image on the photosensitive drum may be blurred. As a result, there is a problem that image degradation occurs.

  Accordingly, an object of the present invention is to provide a recording apparatus capable of suppressing a decrease in image quality recorded by the second image recording unit.

In a first aspect , the recording apparatus of the present invention includes a transport unit that transports a recording medium along a predetermined transport path, and a liquid discharge head in which a plurality of discharge ports that discharge liquid are formed. A first image recording unit configured to record an image by ejecting liquid from the plurality of ejection ports to a recording medium conveyed by the apparatus, and downstream of the first image recording unit in the conveyance path A transfer roller arranged and arranged at a position facing a recording surface of a recording medium on which an image is recorded by the first image recording unit, and a transfer roller configured to sandwich the recording medium between the photosensitive member A second image recording unit configured to transfer a toner image carried on the photoconductor to a recording medium and record an image on the recording medium, and the photoconductor and the transfer roller are in contact with each other The first contact state and To take a first separated state whose serial photosensitive member and said transfer roller is spaced apart from each other, wherein a first moving unit for moving at least one of the photosensitive member and the transfer roller, is arranged in the transport path, a recording medium A first abutting member having a first abutting portion capable of abutting on the recording surface, and a first direction along a straight line passing through the rotation axes of the photosensitive member and the transfer roller in the first separated state A first contact position where the first contact portion is closer to the transfer roller than the photoconductor in the first separated state and can contact the recording surface of the recording medium; and the first contact state The second abutting member is moved so as to take a first retraction position that is closer to the photoconductor than the contact point of the photoconductor that contacts the transfer roller and faces the recording surface of the recording medium. and the moving part, the recording medium The conveyance unit is controlled to convey, and the first image recording unit is controlled to perform image recording on the recording medium by the first image recording unit, and the image by the second image recording unit is recorded on the recording medium. A control unit that controls the second image recording unit to perform recording. The controller records the second image recording unit so that the photosensitive member and the transfer roller take the first separated state when the first image recording unit records an image on a recording medium. When the image is recorded on the medium, the first moving unit is controlled so that the photosensitive member and the transfer roller are in the first contact state, and the first image recording unit records the image on the recording medium. When the second image recording unit records an image on the recording medium so that the first contact portion takes the first contact position, the first contact portion takes the first retracted position. Thus, the second moving unit is controlled .

According to this, when an image is recorded by the first image recording unit, the photosensitive member and the transfer roller are separated from each other. For this reason, it becomes difficult for the recording medium to contact the photoreceptor and the transfer roller. For this reason, it becomes possible to suppress that the liquid which comprises the image recorded on the said recording medium adheres to a photoreceptor, and can suppress the fall of the image quality recorded by a 2nd image recording part. . Further, the recording medium on which the image is recorded by the first image recording unit is less likely to come into contact with the photoconductor. For this reason, it is possible to further suppress the liquid constituting the image recorded on the recording medium from adhering to the photoreceptor. In addition, when an image is recorded on the recording medium by the second image recording unit, it is possible to eliminate the transport load due to the first contact member.

  In the present invention, it is preferable that the first contact portion at the first contact position is between the photoconductor and the transfer roller in the first separated state in the first direction. Thereby, it is possible to reduce the conveyance load of the recording medium. In addition, jamming is less likely to occur when the recording medium passes between the photoconductor and the transfer roller in the first separated state.

In the present invention, the conveyance path further includes a second abutting member that is disposed downstream of the first abutting member and has a second abutting portion that can abut against the recording medium. The second contact portion is, in the first direction, a second contact position that is closer to the transfer roller than the photoconductor in the first separated state and can contact the recording surface of the recording medium. It is preferable that it exists in. Thus, a recording medium on which an image has been recorded by the first image recording unit is less likely to further contact with the photosensitive member. For this reason, it becomes possible to further suppress the liquid constituting the image recorded on the recording medium from adhering to the photosensitive member.

  In the present invention, it is preferable that the second contact portion at the second contact position is between the photoconductor and the transfer roller in the first separated state in the first direction. Thereby, it is possible to reduce the conveyance load of the recording medium. In addition, jamming is less likely to occur when the recording medium passes between the photoconductor and the transfer roller in the first separated state.

In the present invention, the second moving part may be configured so that the second contact part takes the second contact position when the first contact part assumes the first contact position. 1 wherein the photosensitive than the contact point abutment is in contact with the transfer roller of the photosensitive member at the first contact before Symbol the second contact portion Te said first direction odor when taking the first retracted position to take a second retracted position a side opposite to the recording surface of the recording medium, preferably a benzalkonium moves the second contact member. Thereby, when an image is recorded on the recording medium by the second image recording unit, it is possible to eliminate the transport load due to the second contact member.

  Moreover, in this invention, it is preferable that the said 1st contact member is comprised from the spur which has multiple tooth tips which are said 1st contact parts. Thereby, even if the recording medium on which the image is recorded by the first image recording unit and the first contact unit come into contact with each other, the image is hardly disturbed.

  In the present invention, the transport unit further includes a first drive roller disposed at a position in contact with the first contact member when the first contact portion assumes the first contact position. It is preferable. Thereby, the recording medium can be conveyed while further suppressing the contact of the recording medium with the photosensitive member.

  Moreover, in this invention, it is preferable that the said 2nd contact member is comprised from the spur which has multiple tooth tips which are the said 2nd contact part. Accordingly, even when the recording medium on which the image is recorded by the first image recording unit and the second contact unit come into contact with each other, the image is hardly disturbed.

  In the present invention, the transport unit further includes a second drive roller disposed at a position in contact with the second contact member when the second contact portion assumes the second contact position. It is preferable. Thereby, the recording medium can be conveyed while further suppressing the contact of the recording medium with the photosensitive member.

  Moreover, in this invention, it is preferable that the said 1st moving part and the said 2nd moving part are comprised from the common member. Thereby, it becomes possible to simplify the structure of a moving part.

  Further, in the present invention, the conveyance path includes a heating roller disposed downstream of the second contact member and a sandwiching roller configured to sandwich a recording medium between the heating roller, A fixing unit configured to fix the toner image transferred to the recording medium by the second image recording unit; a second contact state in which the heating roller and the sandwiching roller are in contact with each other; the heating roller and the sandwiching roller; And a third moving part that moves at least one of the heating roller and the clamping roller so as to take a second separated state in which the two are separated from each other. The controller records the second image recording unit so that the heating roller and the sandwiching roller take the second separated state when the first image recording unit records an image on a recording medium. It is preferable to control the third moving unit so that the heating roller and the sandwiching roller are in the second contact state when recording an image on a medium. Thereby, when an image is recorded by the first image recording unit, the heating roller and the sandwiching roller are separated from each other. Therefore, it becomes difficult for the recording medium to contact the heating roller and the sandwiching roller. For this reason, it becomes possible to suppress that the liquid which comprises the image recorded on the said recording medium adheres to a heating roller. In addition, since the heating roller and the sandwiching roller are arranged on the downstream side in the transport direction with respect to the second contact portion, the recording medium on which the image is recorded by the first image recording portion is heated by the second contact portion. Makes it harder to touch. For this reason, it becomes possible to suppress more that the liquid which comprises the image recorded on the recording medium adheres to a heating roller.

In the present invention, the image forming apparatus further includes a third abutting member having a third abutting portion disposed downstream of the fixing portion and capable of abutting against the recording medium in the transport path. The heating roller is disposed at a position facing the recording surface of the recording medium on which an image is recorded by the second image recording unit, and the third contact portion is in the second separated state. In a second direction along a straight line passing through the rotation axes of the heating roller and the sandwiching roller, the heating roller and the sandwiching roller side of the second separation state can be in contact with the recording surface of the recording medium. It is preferable that it exists in a 3rd contact position. As a result, the recording medium on which the image is recorded by the first image recording unit becomes more difficult to contact with the heating roller. For this reason, it becomes possible to further suppress the liquid constituting the image recorded on the recording medium from adhering to the heating roller.

  In the present invention, it is preferable that the third contact portion at the third contact position is between the heating roller and the sandwiching roller in the second separated state in the second direction. Thereby, it is possible to reduce the conveyance load of the recording medium. In addition, jamming is less likely to occur when the recording medium passes between the heating roller and the sandwiching roller in the second separated state.

  Further, in the present invention, in the second direction, the third contact portion is closer to the heating roller than a contact point where the third contact portion contacts the third contact position and the clamping roller of the heating roller in the second contact state. The apparatus further includes a fourth moving unit that moves the third contact member so as to take a third retracted position that faces the recording surface of the recording medium. The control unit is configured such that when the first image recording unit performs image recording on the recording medium, the second image recording unit uses the recording medium so that the third contact unit takes the third contact position. It is preferable to control the fourth moving unit so that the third contact portion takes the third retracted position when performing image recording. Thereby, when an image is recorded on the recording medium by the second image recording unit, it is possible to eliminate the transport load due to the third contact member.

In the present invention, the second moving part and the fourth moving part are formed of a common member, and the third abutting part has the second abutting part at the second abutting position. The third abutting position is taken, and the second abutting portion is closer to the photoconductor than the contact point of the photoconductor in contact with the transfer roller in the first contact state in the first direction. The third retracted position is preferably taken when the second retracted position facing the recording surface of the recording medium is taken. Thereby, it becomes possible to simplify the structure of a moving part.

  Moreover, in this invention, it is preferable that the said 3rd contact member is comprised from the spur which has multiple tooth tips which are the said 3rd contact part. As a result, even if the recording medium on which the image is recorded by the first image recording unit and the third contact unit come into contact with each other, the image is hardly disturbed.

In the present invention, the transport unit further includes a third drive roller disposed at a position in contact with the third contact member when the third contact portion assumes the third contact position. It is preferable. As a result, the recording medium can be transported while further preventing the recording medium from contacting the heating roller.
In a second aspect, the recording apparatus of the present invention includes a transport unit that transports a recording medium along a predetermined transport path, and a liquid discharge head in which a plurality of discharge ports that discharge liquid are formed. A first image recording unit configured to record an image by ejecting liquid from the plurality of ejection ports onto a recording medium conveyed by the conveyance unit; and more than the first image recording unit in the conveyance path A transfer roller disposed downstream and configured to sandwich a recording medium between the photosensitive member and the photosensitive member; and transferring a toner image carried on the photosensitive member to the recording medium to transfer the image onto the recording medium. A second image recording unit configured to record the image, a first contact state in which the photoconductor and the transfer roller are in contact with each other, and a first separated state in which the photoconductor and the transfer roller are separated from each other. As said, the feeling A recording medium is sandwiched between a first moving unit that moves at least one of a body and the transfer roller, and a heating roller disposed downstream of the second image recording unit in the transport path and the heating roller. A fixing unit configured to fix the toner image transferred to the recording medium by the second image recording unit, and the heating roller and the clamping roller are in contact with each other. A second moving unit that moves at least one of the heating roller and the sandwiching roller and a recording medium so as to take a two-contact state and a second separated state in which the heating roller and the sandwiching roller are separated from each other; And controlling the first image recording unit so as to perform image recording by the first image recording unit on the recording medium. Serial and a control unit for controlling the second image recording unit to record an image by the second image recording unit. The controller records the second image recording unit so that the photosensitive member and the transfer roller take the first separated state when the first image recording unit records an image on a recording medium. When the image is recorded on the medium, the first moving unit is controlled so that the photosensitive member and the transfer roller are in the first contact state, and the first image recording unit records the image on the recording medium. When the image recording is performed on the recording medium in the second image recording unit, the heating roller and the sandwiching roller are in contact with the second contact so that the heating roller and the sandwiching roller are in the second separated state. The second moving unit is controlled to take a state.
According to this, when an image is recorded by the first image recording unit, the photosensitive member and the transfer roller are separated from each other. For this reason, it becomes difficult for the recording medium to contact the photoreceptor and the transfer roller. For this reason, it becomes possible to suppress that the liquid which comprises the image recorded on the said recording medium adheres to a photoreceptor, and can suppress the fall of the image quality recorded by a 2nd image recording part. . Further, when an image is recorded by the first image recording unit, the heating roller and the sandwiching roller are separated from each other. Therefore, it becomes difficult for the recording medium to contact the heating roller and the sandwiching roller. For this reason, it becomes possible to suppress that the liquid which comprises the image recorded on the said recording medium adheres to a heating roller.
Further, according to a third aspect, the recording apparatus of the present invention includes a transport unit that transports the recording medium along a predetermined transport path, and a liquid discharge head in which a plurality of discharge ports that discharge liquid are formed. A first image recording unit configured to record an image by ejecting liquid from the plurality of ejection ports onto a recording medium conveyed by the conveyance unit; and more than the first image recording unit in the conveyance path A recording medium is sandwiched between a photosensitive member disposed downstream and a photosensitive member disposed at a position facing a recording surface of a recording medium on which an image is recorded by the first image recording unit. A second image recording unit including a transfer roller and configured to transfer a toner image carried on the photoconductor to a recording medium and record an image on the recording medium; and the photoconductor and the transfer roller First contact A first moving unit that moves at least one of the photoconductor and the transfer roller so as to take a first separation state in which the photoconductor and the transfer roller are separated from each other; and A first direction along a straight line that is disposed downstream of the one image recording unit and upstream of the second image recording unit and that passes through the rotation axes of the photoconductor and the transfer roller in the first separated state. A first abutting member having a first abutting portion at a first abutting position on the transfer roller side of the photosensitive member in the first separated state and capable of abutting on the recording surface of the recording medium. And a second contact member that is disposed downstream of the second image recording unit in the transport path and has a second contact unit that can contact the recording surface of the recording medium, and in the first direction. , The second contact portion is the A second contact position that is closer to the transfer roller than the photoconductor in the one-separated state and can contact the recording surface of the recording medium, and contacts the transfer roller of the photoconductor in the first contact state. A second moving part for moving the second contact member so as to take a second retracted position on the photoconductor side from the contact point and facing the recording surface of the recording medium; The first image recording unit is controlled to control the transport unit and to record an image on the recording medium by the first image recording unit, and to record an image on the recording medium by the second image recording unit. And a control unit for controlling the second image recording unit. The controller records the second image recording unit so that the photosensitive member and the transfer roller take the first separated state when the first image recording unit records an image on a recording medium. When the image is recorded on the medium, the first moving unit is controlled so that the photosensitive member and the transfer roller are in the first contact state, and the first image recording unit records the image on the recording medium. When the second image recording unit records an image on a recording medium, the second contact unit takes the second retracted position so that the second contact unit takes the second contact position. Thus, the second moving unit is controlled.
According to this, when an image is recorded by the first image recording unit, the photosensitive member and the transfer roller are separated from each other. For this reason, it becomes difficult for the recording medium to contact the photoreceptor and the transfer roller. For this reason, it becomes possible to suppress that the liquid which comprises the image recorded on the said recording medium adheres to a photoreceptor, and can suppress the fall of the image quality recorded by a 2nd image recording part. . In addition, the recording medium on which the image is recorded by the first image recording unit is less likely to come into contact with the photoreceptor. For this reason, it becomes possible to further suppress the liquid constituting the image recorded on the recording medium from adhering to the photosensitive member. In addition, when an image is recorded on the recording medium by the second image recording unit, it is possible to eliminate the transport load due to the second contact member.

  According to the recording apparatus of the present invention, when the image is recorded by the first image recording unit, the photosensitive member and the transfer roller are separated from each other. For this reason, it becomes difficult for the recording medium to contact the photoreceptor and the transfer roller. For this reason, it becomes possible to suppress that the liquid which comprises the image recorded on the said recording medium adheres to a photoreceptor, and can suppress the fall of the image quality recorded by a 2nd image recording part. .

1 is a schematic side view showing an internal structure of a recording apparatus according to the present invention. It is a schematic side view which shows the structure of the 2nd image recording part shown in FIG. It is a schematic side view which shows the structure of a moving part, (a) shows the condition where three rollers will be in a retracted position, a photosensitive drum, a transfer roller, a heating roller, and a pressure roller will be in a contact state, (b) is 3 This shows a situation where two rollers are in contact, and the photosensitive drum, transfer roller, heating roller, and pressure roller are separated. FIG. 2 is a block diagram illustrating an electrical configuration of a printer. FIG. 2 is a flowchart showing a control flow relating to a recording operation of the recording apparatus of FIG. 1.

  Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings.

  First, the overall configuration of the recording apparatus 1 according to the present invention will be described with reference to FIG. The recording apparatus 1 includes a first image recording unit 10 using an ink jet method, a second image recording unit 20 using an electrophotographic method, and a fixing unit 28. The recording apparatus 1 is provided with a paper feeding device 2 on the left side in FIG. 1 and a paper discharge unit 3 on the right side in FIG. Between the paper feeding device 2 and the paper discharge unit 3, a transport unit 30 that transports the paper (recording medium) P transported from the paper feed device 2 toward the paper discharge unit 3 in the transport direction A. Is provided. The transport unit 30 includes a transport path R1 from the paper feeding device 2 to the paper discharge unit 3 through the first image recording unit 10, the second image recording unit 20, and the fixing unit 28 in order. Further, the recording apparatus 1 is provided with a control unit 4 that controls these operations. The paper P stored in the paper feeding device 2 is a standard paper having a predetermined size (for example, A4).

  As shown in FIG. 1, the paper feeding device 2 has a paper storage unit 2 a that can store a plurality of stacked paper sheets P, and a paper P that is uppermost in the paper storage unit 2 a toward the transport unit 30. A sheet feeding roller 2b that feeds out and a sheet feeding motor 2M (see FIG. 4) that is controlled by the control unit 4 and drives the sheet feeding roller 2b. In this configuration, the sheet P is sent to the transport unit 30 by rotating the sheet feeding roller 2 b in contact with the sheet P under the control of the control unit 4.

  The first image recording unit 10 includes a serial type head 11, a carriage 12, a guide rail 13, a moving unit (not shown) that reciprocates the carriage 12 along the guide rail 13, and a carriage that drives the moving unit. A motor 10M (see FIG. 4) and a plurality of cartridges (not shown) are included. Each of the plurality of cartridges is detachably attached to the recording apparatus 1. Each cartridge stores ink of different colors. For example, black, cyan, magenta, and yellow ink are stored in each cartridge. Each cartridge is connected to the head 11 via a tube and a pump (both not shown), and ink of each color is supplied to the head 11. In this embodiment, the color type head 11 is employed, but a monochrome type head may be employed. In this case, black ink is stored in the cartridge.

  The head 11 has a substantially rectangular parallelepiped shape, and its side surface is supported by the carriage 12. The lower surface of the head 11 is an ejection surface 11a having a plurality of ejection openings. During recording, ink of each color is ejected from a plurality of ejection ports. That is, the head 11 includes a plurality of discharge ports, a liquid passage (not shown) connected to each of the plurality of discharge ports, an energy operation portion (not shown) provided in the middle of the liquid passage, and the energy action. Energy generating means (not shown) for generating energy for acting on the liquid in the section to discharge the liquid. As this energy generation means, a liquid discharge method using an electromechanical transducer such as a piezo element, a liquid discharge using an energy generation means that emits heat by irradiating electromagnetic waves such as a laser, and discharges droplets by the action of the heat generation. And a liquid discharge method using energy generating means for heating the liquid with an electrothermal transducer such as a heating element having a heating resistor to discharge the liquid. The head 11 is supported by the guide rail 13 via the carriage 12, and a predetermined gap suitable for recording is formed between the ejection surface 11 a and the platen 37.

  As shown in FIG. 1, the guide rail 13 extends along the main scanning direction (the direction perpendicular to the conveyance direction A by the conveyance unit 30 and the direction perpendicular to the paper surface in FIG. 1). (Not shown). The carriage 12 is supported on the guide rail 13 so as to be movable in the main scanning direction.

  In this configuration, by driving the carriage motor 10M under the control of the control unit 4, the head 11 reciprocates in the main scanning direction together with the carriage 12 via the moving unit. At this time, the control unit 4 controls the head 11 and causes ink to be ejected from a plurality of ejection ports at a desired timing, whereby an image can be recorded on the paper P disposed facing the ejection surface 11a. In the present embodiment, the direction perpendicular to the main scanning direction and along the horizontal plane is the sub-scanning direction, and is parallel to the transport direction A.

  The second image recording unit 20 is disposed downstream of the first image recording unit 10 in the transport direction A. As shown in FIG. 2, the second image recording unit 20 includes a photosensitive drum 21, a transfer roller 22, a developing roller 23, a layer thickness regulating blade 24, a supply roller 25, a charger 26, a scanner unit 27, a toner storage box. 29 and a drive motor 20M (see FIG. 4) for driving the photosensitive drum 21, and an image (toner image) is recorded on the paper P by an electrophotographic method (described later). The photosensitive drum 21 is disposed so as to face the upper surface of the paper P. In other words, the photosensitive drum 21 is disposed so as to be able to face the surface of the sheet P facing the discharge surface 11a when the sheet P passes between the discharge surface 11a and the platen 35. . The transfer roller 22 is disposed so as to be in contact with a lower portion of the photosensitive drum 21. The transfer roller 22 is a driven roller that rotates when the paper P is conveyed with the photosensitive drum 21. The developing roller 23 and the supply roller 25 are also driven to rotate as the photosensitive drum 21 rotates.

  In this configuration, by driving the drive motor 20M under the control of the control unit 4, the photosensitive drum 21 rotates counterclockwise in FIG. 1 so as to transport the paper P in the transport direction A (direction toward the paper discharge unit 3). Rotate to. As the photosensitive drum 21 rotates, the developing roller 23 and the supply roller 25 also rotate, and the toner is supplied to the developing roller 23 by the supply roller 25. The toner is positively frictionally charged between the supply roller 25 and the developing roller 23. The toner supplied onto the developing roller 23 enters between the layer thickness regulating blade 24 and the developing roller 23 as the developing roller 23 rotates, and is further developed as a thin layer having a constant thickness while being frictionally charged. It is carried on a roller 23. Further, under the control of the control unit 4, the charger 26 (in this embodiment, for example, a known scorotron charger) uniformly negatively charges the surface of the photosensitive drum 21. The surface of the photosensitive drum 21 is exposed when the scanner unit 27 scans the laser beam at a high speed under the control of the control unit 4. As a result, the potential of the exposed portion is lowered, and an electrostatic latent image based on the image data is formed on the surface of the photosensitive drum 21. Then, by the rotation of the developing roller 23, the toner carried on the developing roller 23 is supplied to the electrostatic latent image formed on the surface of the photosensitive drum 21, and the toner image is formed on the surface of the photosensitive drum 21. It is formed. Then, the paper P is conveyed between the photosensitive drum 21 and the transfer roller 22, whereby the toner image carried on the surface of the photosensitive drum 21 is transferred (recorded) onto the paper P. In this embodiment, the photosensitive drum 21 is illustrated as the image carrier, but the image carrier is not limited to this, and includes, for example, the following. First, for example, a photoconductive layer is used as the photoreceptor, and examples of the photoconductor include amorphous silicon, amorphous selenium, zinc oxide, titanium oxide, and organic photoconductor (OPC). The shape for mounting the photoconductor includes, for example, a rotating body such as a drum shape or a belt shape, and a sheet shape.

  The fixing unit 28 is disposed downstream of the second image recording unit 20 in the transport direction A. Further, the fixing unit 28 has a known structure, and as shown in FIG. 1, a heating roller 28a incorporating a heater 28H (see FIG. 4), a pressure roller 28b, and a driving motor for driving the heating roller 28a. 28M (see FIG. 4). The heating roller 28a is disposed so as to face the upper surface of the paper P. In other words, the heating roller 28a is disposed so as to be able to face the surface of the sheet P that faces the discharge surface 11a when the sheet P passes between the discharge surface 11a and the platen 35. . The pressure roller 28b (clamping roller) is disposed so as to be in contact with a lower portion of the heating roller 28a. The pressure roller 28b is a driven roller that rotates when the paper P is conveyed by the heating roller 28a.

  In this configuration, by driving the drive motor 28M under the control of the control unit 4, the heating roller 28a rotates in the same manner as the photosensitive drum 21, and the pressure roller 28b also rotates in a driven manner. When the paper P on which the toner is transferred is conveyed between the rollers 28a and 28b, the toner on the paper P is thermally fixed.

  The conveyance unit 30 drives the conveyance roller pairs 31 to 36 under the control of the six conveyance roller pairs 31 to 36, the platen 37, the two guide pairs 41 and 42, the moving unit 60 (see FIG. 3), and the control unit 4. Conveying motors 31M to 36M (see FIG. 4). The platen 37 is formed of a flat plate member having a plane size that is slightly larger than the length of the ejection surface 11a in the transport direction A and longer in the main scanning direction than the paper P. The platen 37 is disposed at a position facing the ejection surface 11a and supports the paper P.

  The six transport roller pairs 31 to 36 are arranged in order along the transport path R1. More specifically, the conveyance roller pair 31 is disposed upstream of the first image recording unit 10 in the conveyance direction A along the conveyance path R1. The conveyance roller pair 32 is disposed between the first image recording unit 10 and the guide pair 41 along the conveyance path R1. The transport roller pair 33 is disposed upstream of the second image recording unit 20 in the transport direction A and between the guide pair 41 and the second image recording unit 20 along the transport path R1. The conveyance roller pair 34 is disposed downstream of the second image recording unit 20 in the conveyance direction A and between the second image recording unit 20 and the fixing unit 28 along the conveyance path R1. The transport roller pair 35 is disposed downstream of the fixing unit 28 in the transport direction A and between the fixing unit 28 and the guide pair 42 along the transport path R1. The conveyance roller pair 36 is disposed downstream of the guide pair 42 in the conveyance direction A along the conveyance path R1.

  Of the six transport roller pairs 31 to 36, the three transport roller pairs 31, 32, and 36 have the same configuration, and each have two rollers. The lower rollers of these three transport roller pairs 31, 32, and 36 are drive rollers driven by transport motors 31M, 32M, and 36M, and the upper rollers are driven rollers that are rotated by the lower rollers. The remaining three transport roller pairs 33 to 35 have the same configuration as each other, and have two rollers 33a, 33b, 34a, 34b, 35a, and 35b, respectively, as shown in FIG. The lower rollers 33b, 34b, and 35b are drive rollers that are driven by the conveyance motors 33M to 35M. The upper rollers 33a, 34a, and 35a are driven rollers that are rotated by the lower rollers 33b, 34b, and 35b. The upper rollers 33a, 34a, and 35a (first to third contact members) are spur rollers in which a plurality of spurs having a plurality of teeth protruding outward are arranged on the outer peripheral surface in the main scanning direction. The spur tooth tip (the first contact portion to the third contact portion) is in contact with the sheet P. In addition, the upper roller of the conveyance roller pair 32, 36 may also be configured by a spur roller.

  The two guide pairs 41 and 42 constitute a part of the transport path R1. The guide pair 41 includes two guides that form a path between the two conveyance roller pairs 32 and 33 between the first image recording unit 10 and the second image recording unit 20. The guide pair 42 includes two guides that form a path between the two conveying roller pairs 35 and 36.

  As shown in FIG. 3, the moving unit 60 includes a support unit 61 and a solenoid 62 that moves the support unit 61 under the control of the control unit 4. The support part 61 has a pair of support plates 61a and a connection plate 61b. The pair of support plates 61a are arranged at positions sandwiching the three conveying roller pairs 33 to 35, the photosensitive drum 21 and the transfer roller 22, the heating roller 28a, and the pressure roller 28b in the main scanning direction. The pair of support plates 61a rotatably support the shafts 33a1, 34a1, and 35a1 of the three rollers 33a, 34a, and 35a, the shaft 22a of the transfer roller 22, and the shaft 28b1 of the pressure roller 28b. The three rollers 33b, 34b, and 35b, the photosensitive drum 21, and the heating roller 28a are rotatably supported by another pair of support portions (not shown) disposed inside the pair of support plates 61a. It is arranged so that it cannot move from that position. The connection plate 61 b is a flat plate that connects the lower ends of the pair of support plates 61 a and is connected to the solenoid 62. The support part 61 is supported by the housing so as to be slidable in the vertical direction.

  The solenoid 62 moves the three rollers 33a, 34a, 35a, the transfer roller 22, and the pressure roller 28b in the vertical direction via the support portion 61. That is, the solenoid 62 moves the support portion 61 so as to selectively take the first position shown in FIG. 3A and the second position below the first position shown in FIG. . At the first position, the three rollers 33a, 34a, and 35a take retreat positions (first to third retreat positions) that are separated from the rollers 33b, 34b, and 35b, and the transfer roller 22 comes into contact with the photosensitive drum 21 to perform addition. A contact state (first and second contact states) in which the pressure roller 28b contacts the heating roller 28a is taken. At the second position, the three rollers 33a, 34a, and 35a take contact positions (first to third contact positions) where they contact the rollers 33b, 34b, and 35b, and the transfer roller 22 is separated from the photosensitive drum 21. The pressure roller 28b is separated from the heating roller 28a (first and second separated states). Note that the photosensitive drum 21, the transfer roller 22, the heating roller 28a, and the pressure roller 28b are separated from each other in the separated state in excess of the thickness of the paper P.

  At the contact position, as shown in FIG. 3B, the lower ends of the rollers 33a and 34a (spur tooth tips: contact portions) are in the vertical direction (the rotation axes of the photosensitive drum 21 and the transfer roller 22 in the separated state). In the separated state) between the photosensitive drum 21 and the transfer roller 22 and in contact with the rollers 33b and 34b. In other words, the portion of the outer edges of the rollers 33a and 34a that is closest to the transfer roller 22 in the direction along the virtual straight line L1 is the portion of the outer edge of the photosensitive drum 21 that is closest to the transfer roller 22 in the direction along the virtual straight line L1. The side closer to the transfer roller 22 in the direction along the virtual straight line L1 and the side closer to the photosensitive drum 21 than the portion closest to the photosensitive drum 21 in the direction along the virtual straight line L1 in the outer edge of the transfer roller 22 Are arranged. At the contact position, as shown in FIG. 3 (b), a virtual straight line L2 in which the lower end (spur tooth tip) of the roller 35a passes through the rotation axis of the heating roller 28a and the pressure roller 28b in the separated state. In the separated direction) between the heating roller 28a and the pressure roller 28b in the separated state and in contact with the roller 35b. In other words, the portion of the outer edge of the roller 35a closest to the pressure roller 28b in the direction along the virtual straight line L1 is the portion of the outer edge of the heating roller 28a closest to the pressure roller 28b in the direction along the virtual straight line L1. Rather than the side closer to the pressure roller 28b in the direction along the imaginary straight line L1 and the portion of the outer edge of the pressure roller 28b closer to the heating roller 28a in the direction along the imaginary straight line L1. Located on the near side. The three rollers 33a, 34a, and 35a arranged at the contact positions as described above can contact the upper surface of the paper P that has been transported by the transport roller pair 32, and the roller 33b that is the driving roller for the paper P. , 34b, 35b, and can be conveyed. In this case, as shown in FIG. 3B, since the photosensitive drum 21 and the transfer roller 22 are separated from the heating roller 28a and the pressure roller 28b, the sheet P is between the photosensitive drum 21 and the transfer roller 22. The photosensitive drum 21, the transfer roller 22, the heating roller 28a, and the pressure roller 28b pass between the heating roller 28a and the pressure roller 28b. The contact points (positions where the paper P is sandwiched) between the three rollers 33a, 34a, 35a and the rollers 33b, 34b, 35b at the contact positions are separated from each other in the vertical direction and the photosensitive drum 21 and the transfer roller. 22 and at a substantially intermediate position between the heating roller 28a and the pressure roller 28b.

  At the retracted position, as shown in FIG. 3A, the lower ends of the rollers 33a and 34a are lower than the lower end of the photosensitive drum 21 in the contact state in the vertical direction (contact point that contacts the transfer roller 22 of the photosensitive drum 21). It is arranged above (photosensitive drum 21 side). In other words, the portion of the outer edges of the rollers 33a and 34a that is closest to the transfer roller 22 in the direction along the virtual straight line L1 is the portion of the outer edge of the photosensitive drum 21 that is closest to the transfer roller 22 in the direction along the virtual straight line L1. Rather than the transfer roller 22 in the direction along the imaginary straight line L1 (the side closer to the rotation center of the photosensitive drum 21). Further, at the retracted position, as shown in FIG. 3A, the lower end of the roller 35a is in the vertical direction from the lower end of the heating roller 28a in a contact state (a contact point that contacts the pressure roller 28b of the heating roller 28a). Is also disposed above (on the heating roller 28a side). In other words, the portion of the outer edge of the roller 35a closest to the pressure roller 28b in the direction along the virtual straight line L1 is the portion of the outer edge of the heating roller 28a closest to the pressure roller 28b in the direction along the virtual straight line L1. Rather than the pressure roller 28b in the direction along the virtual straight line L1 (the side closer to the rotation center of the heating roller 28a). As described above, the three rollers 33a, 34a, and 35a are opposed to the rollers 33b, 34b, and 35b at the retracted position, facing the upper surface of the paper P. In this case, as shown in FIG. 3A, the sheet P conveyed to the photosensitive drum 21, the transfer roller 22, the heating roller 28a, and the pressure roller 28b is in contact with the photosensitive drum 21 and the transfer roller 22. It is conveyed while being sandwiched between the heating roller 28a and the pressure roller 28b. At this time, the paper P is separated from the conveying roller pairs 33 to 35 as shown in FIG. Note that the contact point between the photosensitive drum 21 and the transfer roller 22 that are in contact with each other (the position where the paper P is sandwiched) and the contact point between the heating roller 28a and the pressure roller 28b take a retracted position in the vertical direction. The three rollers 33a, 34a, 35a and the rollers 33b, 34b, 35b are disposed at substantially intermediate positions.

  In the transport direction A, a sensor 38 is provided on the downstream side of the transport roller pair 32 and on the upstream side of the photosensitive drum 21 and the transfer roller 22 (more specifically, the transport roller pair 33). The sensor 38 can detect the leading edge of the paper P that is transported along the transport path R1. When the sensor 38 detects the leading edge of the paper P, the sensor 38 outputs a detection signal.

  In addition to a central processing unit (CPU) that is an arithmetic processing unit, the control unit 4 includes a read only memory (ROM), a random access memory (RAM), an application specific integrated circuit (ASIC), and an I / F. (Interface), I / O (Input / Output Port), timer, etc. are included. The ROM stores programs executed by the CPU, various fixed data, and the like. The RAM temporarily stores data (for example, image data) necessary for executing the program. The ASIC performs rewriting and rearrangement of image data (for example, signal processing and image processing). The I / F performs data transmission / reception with an external device (for example, a PC connected to the printer 1). I / O inputs / outputs detection signals of various sensors. Note that the control unit 4 may not include the ASIC, and image data may be rewritten or rearranged by a program executed by the CPU.

  As shown in FIG. 4, the control unit 4 includes a paper feed motor 2M, transport motors 31M to 36M, a head 11, a carriage motor 10M, drive motors 20M and 28M, a charger 26, a scanner unit 27, a solenoid 62, and the like. It is connected. In addition, the control unit 4 prepares for recording, supplies, conveys, and discharges the paper P so that an image by the ink ejection method or the electrophotographic method is recorded on the paper P based on the recording command received from the external device. The operation and the recording operation synchronized with the conveyance of the paper P are controlled.

  Next, a control flow relating to the recording operation of the recording apparatus 1 will be described below with reference to FIG.

  The recording apparatus 1 stands by until a recording command for recording an image on the paper P is received from an external apparatus (step S1). When the recording command is received (YES), the control unit 4 determines whether the information included in the recording command is image recording by the ink ejection method (step S2). If the control unit 4 determines YES in step S2, the process proceeds to step S3, where the first image recording unit 10 performs image recording by the ink ejection method.

  First, in step S <b> 3, the control unit 4 determines whether or not the support unit 61 is in the second position. If the support unit 61 is in the first position (NO), the control unit 4 controls the solenoid 62 and controls the support unit 62. Is the second position (step S4). In step S3, when the support part 61 exists in a 2nd position (YES), it progresses to step S5. As a result, the solenoid 62 can be controlled until the leading edge of the sheet reaches the conveying roller pair 33, and the support portion 61 can be moved to the second position. That is, as shown in FIG. 3B, the photosensitive drum 21, the transfer roller 22, the heating roller 28a, and the pressure roller 28b are separated from each other, and the three rollers 33a, 34a, 35a are in contact positions. .

  In step S5, the control unit 4 drives the paper feed motor 2M to feed the paper P from the paper storage unit 2a to the transport unit 30. In step S <b> 6, the control unit 4 drives the transport motors 31 </ b> M to 36 </ b> M to transport the paper P toward the paper discharge unit 3. At this time, the control unit 4 controls the two conveyance motors 31M and 32M so as to record the image on the paper P only from the time when the liquid ejection from the head 11 is started until the time when the liquid ejection is finished. Then, the paper P is intermittently conveyed by the conveyance roller pairs 31 and 32. That is, the conveyance roller pairs 31 and 32 repeat conveyance and pause.

  The controller 4 controls the carriage motor 10M and the head 11 to reciprocate the head 11 in the main scanning direction and eject ink at a desired timing when the conveyance by the conveyance roller pairs 31 and 32 is temporarily stopped. Then, an image is recorded on the paper P (step S7).

  When the trailing edge of the paper P passes through the head 11, the control unit 4 controls the two transport motors 31M and 32M in step S8 so that the transport roller pair 31, 32 continuously transports the paper P. Switch to. The transport roller pairs 33 to 36 are driven so as to continuously transport the paper P from the beginning. Thus, the paper P on which the image is recorded by the first image recording unit 10 is the paper roller P 33 on which the image P is recorded by the first image recording unit 10 while being separated from the photosensitive drum 21 and the heating roller 28a. To 35 are conveyed toward the paper discharge unit 3. Then, the paper P passes through the guide pair 42 and is discharged to the paper discharge unit 3 by the transport roller pair 33 (step S8). Thereafter, the process proceeds to step S17.

  If it is determined NO in step S2, the control unit 4 proceeds to step S9, and the second image recording unit 20 performs image recording by the electrophotographic method. First, in step S9, the control unit 4 controls the heater 28H to heat the heating roller 28a to a predetermined temperature. Next, in step S10, the control unit 4 determines whether or not the support unit 61 is in the first position. If the support unit 61 is in the second position (NO), the control unit 4 controls the solenoid 62 to determine whether the support unit 61 is in the second position. 62 is set as the first position (step S11). In step S10, when the support part 61 exists in a 1st position (YES), it progresses to step S12. As a result, the solenoid 62 can be controlled until the leading edge of the sheet reaches the conveying roller pair 33, and the support portion 61 can be moved to the first position. That is, as shown in FIG. 3A, the photosensitive drum 21, the transfer roller 22, the heating roller 28a, and the pressure roller 28b are in contact with each other, and the three rollers 33a, 34a, and 35a are in the retracted positions.

  In step S12, the control unit 4 performs the same control as in step S5 described above. In step S <b> 13, the control unit 4 drives the conveyance motors 31 </ b> M, 32 </ b> M, and 36 </ b> M to convey the paper P toward the paper discharge unit 3. At this time, the conveyance roller pairs 31, 32, and 36 are driven so as to convey the paper P continuously.

  In step S <b> 14, the control unit 4 controls the drive motor 20 </ b> M, the charger 26, and the scanner unit 27 in synchronization with the conveyance of the paper P, and rotates toner on the surface of the photosensitive drum 21 while rotating the photosensitive drum 21 and the like. Form an image. Thus, when the paper P is conveyed between the photosensitive drum 21 and the transfer roller 22, the toner image is transferred onto the paper P. In step S15, the control unit 4 controls the drive motor 28M in synchronization with the conveyance of the paper P, and also rotates the heating roller 28a and the pressure roller 28b. The sheet P on which the toner image is transferred passes through the heating roller 28a and the pressure roller 28b, whereby the toner on the sheet P is thermally fixed, and the image is recorded on the sheet P. Thus, the paper P on which the image is recorded is discharged to the paper discharge unit 3 by the transport roller pair 36 (step S16). Thereafter, the process proceeds to step S17.

  In step S17, if a recording command is received next (YES), the process returns to step S2, and if not received (NO), the control flow relating to the recording operation is completed.

  As described above, according to the recording apparatus 1 according to the present embodiment, when the first image recording unit 10 records an image, the photosensitive drum 21 and the transfer roller 22 are separated from each other. Therefore, the paper P is less likely to contact the photosensitive drum 21 and the transfer roller 22. For this reason, it becomes possible to suppress that the ink which comprises the image recorded on the said paper P adheres to the photosensitive drum 21, and suppresses the fall of the image quality recorded by the 2nd image recording part 20. Can do. If the photosensitive drum 21 and the transfer roller 22 are not separated from each other, the sheet P on which an image is recorded by the first image recording unit 10 and the photosensitive drum 21 come into contact. That is, the paper P to which ink is attached comes into contact with the photosensitive drum 21. If moisture adheres to the photosensitive drum 21, the charge on the photosensitive drum 21 moves and the electrostatic latent image blurs, which may cause image deterioration. According to the recording apparatus 1 according to the present embodiment, when an image is recorded by the first image recording unit 10, the photosensitive drum 21 and the transfer roller 22 are separated from each other. Can be prevented from contacting the photosensitive drum 21.

  When an image is recorded by the first image recording unit 10, a roller 33a that takes a contact position is provided. As a result, the sheet P on which an image is recorded by the first image recording unit 10 is less likely to contact the photosensitive drum 21. For this reason, it is possible to further suppress the ink constituting the image recorded on the paper P from adhering to the photosensitive drum 21. Further, the lower end of the roller 33a at the contact position is between the photosensitive drum 21 and the transfer roller 22 in the vertical direction. Accordingly, it is not necessary to bend the paper P more than necessary in order to separate the paper P from the photosensitive drum 21, and the conveyance load of the paper P can be reduced. If the contact point between the roller 33a and the roller 33b (the lower end of the roller 33a) is below the upper end of the transfer roller 22 in the vertical direction, the leading edge of the sheet P conveyed by the conveyance roller pair 33 is the transfer roller. The paper 22 collides with the upstream side surface of the paper 22, and the paper P is likely to be jammed. However, as in this embodiment, the contact point (the lower end of the roller 33a) is between the photosensitive drum 21 and the transfer roller 22 in the separated state, so that the paper P passes between the photosensitive drum 21 and the transfer roller 22. It becomes difficult to jam when passing.

  When an image is recorded by the first image recording unit 10, a roller 34a that takes a contact position is provided. As a result, the portion of the paper P on which the image has been recorded by the first image recording unit 10 that has passed through the roller 33 a becomes more difficult to contact with the photosensitive drum 21. For this reason, it is possible to further suppress the ink constituting the image recorded on the paper P from adhering to the photosensitive drum 21. Further, the lower end of the roller 34a at the contact position is also between the photosensitive drum 21 and the transfer roller 22 in the vertical direction. Accordingly, it is not necessary to bend the paper P more than necessary in order to separate the paper P from the photosensitive drum 21, and the conveyance load of the paper P can be reduced. If the contact point between the roller 34a and the roller 34b (the lower end of the roller 34a) is below the upper end of the transfer roller 22 in the vertical direction, the paper P conveyed by the conveyance roller pair 34 passes through the transfer roller 22. Therefore, the paper P tends to be jammed. However, since the contact point (the lower end of the roller 34 a) is between the photosensitive drum 21 and the transfer roller 22 in the separated state as in the present embodiment, the sheet P passes between the photosensitive drum 21 and the transfer roller 22. It becomes difficult to jam when passing.

  By providing the moving unit 60 for moving the roller 34a, it is possible to eliminate the transport load caused by the roller 34a when the second image recording unit 20 records an image on the paper P. Further, since the moving unit 60 moves the roller 33a in the same manner as the roller 34a, when the second image recording unit 20 records an image on the paper P, it is possible to eliminate the transport load caused by the roller 33a. Further, since the rollers 33a, 34a, and 35a are spur rollers, even if the paper P on which the image is recorded by the first image recording unit 10 and the rollers 33a, 34a, and 35a come into contact with each other, the image is not easily disturbed.

  Since the rollers 33b, 34b, and 35b are provided as drive rollers, the paper P can be conveyed while further suppressing the paper P from contacting the photosensitive drum 21 and the heating roller 28a.

  The moving unit 60 has a common member for moving the roller 35a and the transfer roller 22 in addition to the rollers 33a and 34a. For this reason, it becomes possible to simplify the structure of the moving part 60. FIG. Further, the moving unit 60 also moves the pressure roller 28b. For this reason, it becomes possible to simplify the structure of the moving part 60 more.

  In addition, the control unit 4 causes the second image recording unit 20 to capture an image on the paper P so that the heating roller 28a and the pressure roller 28b are separated when the first image recording unit 10 records an image on the paper P. The moving unit 60 is controlled so that the heating roller 28a and the pressure roller 28b are in contact with each other when recording the image. Thereby, when an image is recorded by the first image recording unit 10, the heating roller 28a and the pressure roller 28b are separated from each other. For this reason, the paper P is unlikely to contact the heating roller 28a and the pressure roller 28b. For this reason, it becomes possible to suppress that the ink which comprises the image recorded on the said paper P adheres to the heating roller 28a. In addition, the heating roller 28a and the pressure roller 28b are arranged on the downstream side in the transport direction with respect to the roller 34a, so that the sheet P on which the image is recorded by the first image recording unit 10 is transferred by the roller 34a by the heating roller 28a. It becomes difficult to touch. For this reason, it is possible to further suppress the ink constituting the image recorded on the paper P from adhering to the heating roller 28a.

  When an image is recorded by the first image recording unit 10, a roller 35 a that takes a contact position is provided. As a result, the paper P on which the image is recorded by the first image recording unit 10 becomes more difficult to contact with the heating roller 28a. For this reason, it is possible to further suppress the ink constituting the image recorded on the paper P from adhering to the heating roller 28a. Furthermore, the lower end of the roller 35a in the contact position is between the heating roller 28a and the pressure roller 28b in the vertical direction. Thereby, it is not necessary to bend more than necessary in order to separate the paper P from the heating roller 28a, and the conveyance load of the paper P can be reduced. If the contact point between the roller 35a and the roller 35b (the lower end of the roller 35a) is below the upper end of the pressure roller 28b in the vertical direction, the sheet P conveyed by the conveyance roller pair 35 is pressed by the pressure roller. 28b is bent, and the paper P is likely to be jammed. However, as in the present embodiment, the contact point (the lower end of the roller 35a) is located between the heating roller 28a and the pressure roller 28b in the separated state, so that the paper P is heated by the heating roller 28a and the pressure roller 28b. It becomes difficult to jam when passing between.

  By providing the moving unit 60 for moving the roller 35a, it is possible to eliminate the transport load caused by the roller 35a when the second image recording unit 20 records an image on the paper P.

  The preferred embodiments of the present invention have been described above. However, the present invention is not limited to the above-described embodiments, and various modifications can be made as long as they are described in the claims. For example, in the above-described embodiment, the rollers 33a, 34a, and 35a move so as to selectively take the contact position and the retracted position, but may be positioned at the contact position. Also in this case, when the photosensitive drum 21, the transfer roller 22, the heating roller 28a, and the pressure roller 28b are separated (when an image is recorded on the paper P by the first image recording unit 10), the paper P is a roller. Separated from the photosensitive drum 21 and the heating roller 28a by 33a, 34a and 35a. For this reason, the effect similar to the above can be acquired. Further, when an image is recorded on the paper P by the first image recording unit 10, the contact members for separating the paper P from the photosensitive drum 21 and the heating roller 28a are other than the rollers 33a, 34a, and 35a described above. You may be comprised from the member. Further, the rollers 33a, 34a, and 35a may be composed of rollers having a flat outer peripheral surface. Further, the lower ends of the rollers 33 a, 34 a, and 35 a at the contact positions (that is, the contact portions that contact the paper P) may be lower than the upper ends of the transfer rollers 22.

  In the above-described embodiment, one moving unit 60 moves the three rollers 33a, 34a, and 35a, the transfer roller 22, and the pressure roller 28b. However, a plurality of moving units that move each independently are provided. You may have. Even in this case, the same effect can be obtained by moving the three rollers 33a, 34a, 35a, the transfer roller 22 and the pressure roller 28b at the same timing as described above. Furthermore, the three rollers 33a, 34a, and 35a, the transfer roller 22, and the pressure roller 28b may be moved in various combinations by two to four moving units. Also in this case, the same effect as described above can be obtained. Further, all of the three transport roller pairs 33 to 35 may not be provided, or only one or two of the three transport roller pairs 33 to 35 may be provided. Furthermore, the rollers 33b, 34b, and 35b as drive rollers may not be provided.

  Further, in the above-described embodiment, the transfer roller 22 and the pressure roller 28b are moved so that the moving unit 60 takes the contact state and the separated state. However, the photosensitive drum 21 and the heating roller 28a are moved. Alternatively, both the photosensitive drum 21, the transfer roller 22, the heating roller 28a, and the pressure roller 28b may be moved. The head 11 of the first image recording unit 10 may be a line head. The recording medium is not limited to the paper P, and may be various recording media.

DESCRIPTION OF SYMBOLS 1 Recording device 4 Control part 10 1st image recording part 11 Head (liquid discharge head)
20 Second image recording unit 21 Photosensitive drum 22 Transfer drum 28 Fixing unit 28a Heating roller 28b Pressure roller (nipping roller)
30 Conveying section 33a Roller (first contact member)
33b Roller (first drive roller)
34a Roller (second contact member)
34b Roller (second drive roller)
35a roller (third contact member)
35b roller (third drive roller)
60 moving part (first moving part, second moving part, third moving part, fourth moving part)

Claims (19)

A transport unit that transports the recording medium along a predetermined transport path;
A liquid discharge head including a plurality of discharge ports for discharging liquid is formed, and is configured to discharge a liquid from the plurality of discharge ports to record an image on a recording medium conveyed by the conveyance unit. A first image recording unit;
A photosensitive member disposed downstream of the first image recording unit in the conveyance path and disposed at a position facing a recording surface of a recording medium on which an image is recorded by the first image recording unit ; A second image recording unit including a transfer roller configured to sandwich the recording medium therebetween, and configured to transfer the toner image carried on the photosensitive member to the recording medium and record the image on the recording medium When,
At least one of the photoconductor and the transfer roller is set to take a first contact state where the photoconductor and the transfer roller are in contact with each other and a first separation state where the photoconductor and the transfer roller are separated from each other. A first moving unit to be moved;
A first contact member disposed in the transport path and having a first contact portion capable of contacting the recording surface of the recording medium;
In the first direction along a straight line passing through the rotation axes of the photoconductor and the transfer roller in the first separated state, the first contact portion is more than the photoconductor in the first separated state. On the side of the photoconductor from the point of contact with the transfer roller of the photoconductor in the first contact state. A second moving part that moves the first abutting member so as to take a first retracted position that opposes the recording surface;
The transport unit is controlled to transport the recording medium, the first image recording unit is controlled to perform image recording on the recording medium by the first image recording unit, and the second image recording is performed on the recording medium. A control unit that controls the second image recording unit so as to perform image recording by the unit,
The control unit applies the second image recording unit to the recording medium so that the photosensitive member and the transfer roller take the first separated state when the first image recording unit records an image on the recording medium. When the first moving unit is controlled so that the photosensitive member and the transfer roller are in the first contact state when performing image recording, and when the first image recording unit performs image recording on a recording medium. When the second image recording unit records an image on a recording medium so that the first contact portion takes the first contact position, the first contact portion takes the first retraction position. A recording apparatus for controlling the second moving unit . Wherein said first contact portion in which the first is in the contact position, in the first direction, according to claim 1, characterized in that between the photosensitive member and the transfer roller in the first separated state Recording device. A second abutting member disposed on the downstream side of the first abutting member in the conveying path and having a second abutting portion capable of abutting against the recording medium;
The second contact portion is in a second contact position in the first direction, which is closer to the transfer roller than the photoconductor in the first separated state and can contact the recording surface of the recording medium. the recording apparatus according to claim 1 or 2, characterized in that. The second contact portion in the second abutment position, in the first direction, according to claim 3, characterized in that between the photosensitive member and the transfer roller in the first separated state Recording device. The second abutting portion is configured so that the first abutting portion takes the second abutting position when the first abutting portion assumes the first abutting position. It said second recording medium a said photoconductor side than the contact point abutment is in contact with the transfer roller of the photosensitive member at the first contact before Symbol Te first direction odor when taking a first retracted position He said to take a second retracted position to the recording surface facing recording apparatus according to claim 3 or 4, wherein the benzalkonium moving the second abutment member. The recording apparatus according to claim 1, wherein the first contact member includes a spur having a plurality of tooth tips that are the first contact portions. The conveyance unit further includes a first drive roller disposed at a position in contact with the first contact member when the first contact unit assumes the first contact position. The recording apparatus according to claim 6 . The recording apparatus according to claim 3 , wherein the second contact member includes a spur having a plurality of tooth tips that are the second contact portions. The transport unit further includes a second drive roller disposed at a position in contact with the second contact member when the second contact portion assumes the second contact position. The recording apparatus according to claim 8 . The recording apparatus according to claim 1 , wherein the first moving unit and the second moving unit are configured by a common member. A heating roller disposed downstream of the second contact member in the conveyance path, and a sandwiching roller configured to sandwich a recording medium between the heating roller and the second image recording unit. A fixing unit configured to fix the toner image transferred to the recording medium;
At least one of the heating roller and the sandwiching roller is set to take a second contact state where the heating roller and the sandwiching roller are in contact with each other and a second separated state in which the heating roller and the sandwiching roller are separated from each other. A third moving part to be moved,
The control unit is configured such that when the first image recording unit performs image recording on the recording medium, the heating roller and the sandwiching roller take the second separated state on the recording medium by the second image recording unit. wherein said heating roller when an image is recorded so the nip roller takes the second contact state, claim 3～5,8,9, wherein the controller controls the third mobile unit The recording apparatus according to item 1. A third abutting member disposed on the downstream side of the fixing unit in the conveying path and having a third abutting portion capable of abutting against the recording medium;
The heating roller is disposed at a position facing the recording surface of a recording medium on which an image is recorded by the second image recording unit,
In the second direction along a straight line passing through the rotation axes of the heating roller and the sandwiching roller in the second separated state, the third contact portion is more sandwiched than the heating roller in the second separated state. The recording apparatus according to claim 11 , wherein the recording apparatus is in a third contact position on the roller side and capable of contacting the recording surface of the recording medium. Said third contact portion in the third abutting position, in the second direction, according to claim 12, characterized in that between the heating roller and the nip roller in the second separated state Recording device. In the second direction, the third contact portion is closer to the heating roller than a contact point where the third contact portion contacts the third contact position and the clamping roller of the heating roller in the second contact state. A fourth moving part that moves the third abutting member to take a third retreat position that faces the recording surface;
The controller is configured such that when the first image recording unit performs image recording on the recording medium, the second image recording unit takes an image on the recording medium so that the third contact unit takes the third contact position. The recording apparatus according to claim 12 or 13 , wherein the fourth moving unit is controlled so that the third contact portion takes the third retracted position when recording is performed. The second moving part and the fourth moving part are composed of a common member,
The third abutting portion takes the third abutting position when the second abutting portion assumes the second abutting position, and the second abutting portion is the first contact in the first direction. The third retraction position is taken when taking a second retraction position that is closer to the photoconductor than the contact point of the photoconductor in contact with the transfer roller and faces the recording surface of the recording medium. The recording apparatus according to claim 14.
The recording apparatus according to any one of claims 12 to 15, wherein the third contact member includes a spur having a plurality of tooth tips that are the third contact portions. The transport unit further includes a third drive roller disposed at a position in contact with the third contact member when the third contact portion assumes the third contact position. The recording apparatus according to claim 16 . A transport unit that transports the recording medium along a predetermined transport path;
A liquid discharge head including a plurality of discharge ports for discharging liquid is formed, and is configured to discharge a liquid from the plurality of discharge ports to record an image on a recording medium conveyed by the conveyance unit. A first image recording unit;
Toner carried on the photoconductor, including a transfer roller disposed downstream of the first image recording unit in the transport path and configured to sandwich a recording medium between the photoconductor and the photoconductor A second image recording unit configured to transfer an image to a recording medium and record the image on the recording medium;
At least one of the photoconductor and the transfer roller is set to take a first contact state where the photoconductor and the transfer roller are in contact with each other and a first separation state where the photoconductor and the transfer roller are separated from each other. A first moving unit to be moved;
A heating roller disposed downstream of the second image recording unit in the conveyance path, and a sandwiching roller configured to sandwich a recording medium between the heating roller and the second image recording unit. A fixing unit configured to fix the toner image transferred to the recording medium;
At least one of the heating roller and the sandwiching roller is set to take a second contact state where the heating roller and the sandwiching roller are in contact with each other and a second separated state in which the heating roller and the sandwiching roller are separated from each other. A second moving part to be moved;
The transport unit is controlled to transport the recording medium, the first image recording unit is controlled to perform image recording on the recording medium by the first image recording unit, and the second image recording is performed on the recording medium. A control unit that controls the second image recording unit so as to perform image recording by the unit,
The control unit applies the second image recording unit to the recording medium so that the photosensitive member and the transfer roller take the first separated state when the first image recording unit records an image on the recording medium. When the first moving unit is controlled so that the photosensitive member and the transfer roller are in the first contact state when performing image recording, and when the first image recording unit performs image recording on a recording medium. When the second image recording unit records an image on a recording medium so that the heating roller and the sandwiching roller are in the second separated state, the heating roller and the sandwiching roller are in the second contact state. A recording apparatus for controlling the second moving unit as described above. A transport unit that transports the recording medium along a predetermined transport path;
A liquid discharge head including a plurality of discharge ports for discharging liquid is formed, and is configured to discharge a liquid from the plurality of discharge ports to record an image on a recording medium conveyed by the conveyance unit. A first image recording unit;
A photosensitive member disposed downstream of the first image recording unit in the conveyance path and disposed at a position facing a recording surface of a recording medium on which an image is recorded by the first image recording unit; A second image recording unit including a transfer roller configured to sandwich the recording medium therebetween, and configured to transfer the toner image carried on the photosensitive member to the recording medium and record the image on the recording medium When,
At least one of the photoconductor and the transfer roller is set to take a first contact state where the photoconductor and the transfer roller are in contact with each other and a first separation state where the photoconductor and the transfer roller are separated from each other. A first moving unit to be moved;
In the conveyance path, it is disposed downstream of the first image recording unit and upstream of the second image recording unit, and passes through the rotational axes of the photoconductor and the transfer roller in the first separated state. In a first direction along a straight line, a first abutting portion located at a first abutting position that is closer to the transfer roller than the photoconductor in the first separated state and can abut against the recording surface of the recording medium. A first abutting member having
A second contact member that is disposed downstream of the second image recording unit in the transport path and has a second contact unit that can contact the recording surface of the recording medium;
In the first direction, the second contact portion is closer to the transfer roller than the photoconductor in the first separated state and can contact the recording surface of the recording medium; In the first contact state, the second abutting member is disposed so as to take a second retracted position that is closer to the photoconductor than the contact point of the photoconductor that contacts the transfer roller and faces the recording surface of the recording medium. A second moving part to be moved;
The transport unit is controlled to transport the recording medium, the first image recording unit is controlled to perform image recording on the recording medium by the first image recording unit, and the second image recording is performed on the recording medium. A control unit that controls the second image recording unit so as to perform image recording by the unit,
The control unit applies the second image recording unit to the recording medium so that the photosensitive member and the transfer roller take the first separated state when the first image recording unit records an image on the recording medium. When the first moving unit is controlled so that the photosensitive member and the transfer roller are in the first contact state when performing image recording, and when the first image recording unit performs image recording on a recording medium. As the second contact portion takes the second contact position, the second contact portion takes the second retracted position when the second image recording portion records an image on a recording medium. A recording apparatus for controlling the second moving unit.

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