JP2000211826A - Image recording device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an image recording device of simple structure capable of enhancing the throughput in the two-surface recording operation and also reducing the costs. SOLUTION: A sheet on whose one surface an image is recorded, is transported to an inversive transport path 51 by a reverse rotation of a changeover transporting means 44, inverted by an inverse transport means 50 installed on the inversive transport path 51, and sent to a recording means 47 to undergo recording an image on the rear surface. A manual sheet feed hole 56 is provided in one side face of the device body situated beside the recording means, and the inversive transport path 51 is located between the recording means 47 and manual sheet feed hole 56, and thereby the sheet fed manually is directed toward the recording means 47 via the transport path 51, and image is recorded on one surface of the sheet. Further in case image is to be recorded on the rear surface, the sheet is again sent to the transport path 51 by the changeover transporting means 44.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an image recording apparatus, and more particularly to an image recording apparatus in which a sheet on which an image is recorded on one side is reversed and conveyed to recording means again, and an image is recorded on the reverse side of the reversed sheet. About things.

[0002]

2. Description of the Related Art Today, various information processing apparatuses have been developed with the development of information processing systems, and image recording apparatuses such as facsimile apparatuses having an image reading function are used not only in offices but also in general homes as information processing apparatuses. Has also become widely used.

In a facsimile apparatus as an example of a conventional image recording apparatus, for example, as shown in FIG. 8, an operation section (not shown) is arranged on the upper front surface of the apparatus main body 100, and a reading section 101 is connected to the apparatus main body 100. The original is read by transporting the original G to the front side of the apparatus.
In addition, many printing apparatuses having a configuration in which the printing section 102 is disposed below the reading section 101 and a printing sheet, which is a printed sheet, is discharged to the near side have been put to practical use.

Further, in such a facsimile apparatus, a reversing paper feed unit 83 for reversing the recording paper is arranged below the recording unit 102 as shown in FIG. There are things that are.

Next, an image recording operation of such a facsimile apparatus will be described.

[0006] The recording paper 71 loaded on the recording paper storage cassette 70 is fed one by one from the uppermost side by a feeding roller 72, and then reaches a conveying roller 74 through a space between an upper guide 73a and a lower guide 73b. Thereafter, the paper is fed by a predetermined amount at a pitch by the conveyance roller 74 and is conveyed to the recording position.

On the other hand, at this recording position, as a means for recording an ink image on the recording paper 71 conveyed by the conveying roller 74, a recording head 75 is movably maintained while mounted on a carriage 76. At a position facing the recording head 75, a platen 79 that supports the recording paper 71 from the back side is arranged.

Although not shown, the recording head 75 is provided at a minute ink ejection port, a liquid path, and a part of the liquid path, and includes an energy generating means for heating the ink by a heating resistor to discharge the liquid. ing. Also, the carriage 7
Numeral 6 is reciprocated in a vertical direction in the drawing along a guide shaft 77 and a guide rail 78 by a drive motor and a feed mechanism (not shown).

At this recording position, an ink image is recorded on the recording paper 71 by the recording head 75 reciprocating with the carriage 76. The recording paper 71 on which the ink image is recorded is guided to the flapper 81 by the discharge roller 80. When the single-sided recording mode is selected, the recording paper 71 is guided by the flapper 81 located at the position shown by the broken line to the discharge tray 81. 89 are sequentially loaded.

When the double-sided recording mode is selected, the recording paper 71 is guided by the flapper 81 which is switched to the position shown by the solid line, and is fed along the reversing conveyance path 82 at the lower side of the apparatus. The paper is fed to the paper unit 83.

Further, in the reversing sheet feeding section 83, the recording paper 71 is first fed into the reversing pocket 85 by the normal rotation of the reversing roller 84, and then the reversing operation of the reversing roller 84 and the solid line position of the reversing flapper 86 are performed. The direction is reversed by the switching operation from to the dashed line position, and thereafter, is sent back to the transport roller 74 via the S-shaped transport path 87,
The sheet is again guided onto the platen 79 by the transport roller 74.

[0012] After the image is recorded on the opposite side of the recording paper 71 by the recording head 75, the recording paper 71 is indicated by a broken line. The sheets are sequentially stacked on the discharge tray 89 while being guided by the flapper 81 switched to the position.

[0013]

However, in the conventional facsimile apparatus (image recording apparatus) having such a configuration, the apparatus is large in size because the reversing sheet feeding section 83 is provided below the recording section 102. And the initial cost is increased, and it takes time to clear the jam in the reverse sheet feeding unit 83. In addition, the reversing paths 82, 85, and 87 for performing double-sided printing are long, and in the case of performing double-sided printing, it takes time to reverse the recording paper 71, resulting in a decrease in throughput.

Further, in the conventional facsimile apparatus, since a separate manual paper feed port and a different conveyance path are formed for performing manual conveyance, the apparatus becomes complicated.

Accordingly, the present invention has been made in view of such circumstances, and an image recording apparatus which has a simple structure, can improve the throughput of double-sided recording, and can reduce the cost. It is intended to provide.

[0016]

According to the present invention, a sheet on which an image is recorded on one side is inverted, and the sheet is conveyed to the recording means again.
In an image recording apparatus configured to record an image on the back surface of the inverted sheet, a reversing conveyance path for reversing the sheet on which the image is recorded on one side and conveying the image to the recording unit again, and recording the image on the one side. Forward / reverse switchable transport means for selectively transporting the fed sheet in the paper discharge direction by forward rotation and in the direction of the reverse transport path by reverse rotation; and manual feed paper provided on one side of the apparatus main body. And a manual paper feed port for performing the manual feed, wherein the manual paper feed port is provided on a side of the recording means, and the reverse conveyance path is disposed between the recording means and the manual paper feed port. A sheet manually fed from a paper feed port is passed through the reverse conveyance path and directed to the recording unit.

Further, according to the present invention, when an image is recorded on the back side of the manually fed sheet, the sheet having an image formed on one side by the recording means is switched again after passing through the reverse conveyance path. It is characterized in that the sheet is conveyed to the reverse conveying path by a conveying means.

Further, according to the present invention, while the reversing conveyance path has a loop shape, the sheet conveyed to the reversing conveyance path is reversed and conveyed to the recording means, and the inner peripheral surface of the reversing conveyance path is formed. The present invention is characterized in that it comprises a reversing transport means.

Further, the present invention is characterized in that a spur is provided on a guide member which is arranged on the outer periphery of the reverse transport means and forms the reverse transport path together with the reverse transport means.

Further, the present invention is characterized in that a reverse transport unit having the manual feed port and the reverse transport path is detachably attached to the apparatus main body.

Further, as in the present invention, the sheet on which the image is recorded on one side is selectively conveyed in the sheet discharging direction by the forward rotation of the switching conveying means and in the direction of the reversing conveying path by the reverse rotation. When the sheet is conveyed to a path, the sheet is turned over by a reversing conveyance means provided on the reversing conveyance path, is conveyed to a recording means, and an image is recorded on the back surface of the sheet. Further, by providing a manual paper feed port on one side of the apparatus main body on the side of the recording means and arranging a reversing conveyance path between the recording means and the manual paper feed port, manual paper is fed from the manual paper feed port. The printed sheet is passed through a reverse conveyance path and directed to a recording unit, and an image is recorded on one side of the sheet. Further, when an image is to be recorded on the back side of the sheet on which the image is recorded on one side, this sheet is transported again to the reverse transport path by the switching transport means.

[0022]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a sectional view showing a schematic configuration of a facsimile apparatus which is an example of the image recording apparatus according to the first embodiment of the present invention.

In FIG. 1, reference numeral A denotes a facsimile apparatus main body (hereinafter, referred to as an apparatus main body). The apparatus main body A includes a scanner section 1 which is a document transport type reading apparatus for reading an image while transporting a document, and a recording apparatus. A printer unit 2, a power supply 3, and the like, which are recording devices that perform serial recording while transporting the paper S, are each incorporated therein. These components are individually configured so that they can be easily replaced and detached.

Next, the configuration of each of these units will be described in detail.

First, the scanner section 1 will be described.

The scanner unit 1 irradiates the original G with light, converts the reflected light into an electric signal, and transmits the signal to another machine according to the operation mode, or transmits the signal to its own printer unit 2. The scanner body 17 includes a scanner main body 17 as a fixed unit and a panel unit 16 as a movable unit that is coupled to the scanner main body 17 so as to open and close about a hinge (not shown).

The scanner main body 17 has a scanner base 21 serving as a frame of the scanner section 1. The scanner base 21 is provided with a lower cover 4 to be described later.
And a lower document guide 22 for guiding the lower side of the document G, a separation roller 23 for feeding out the document G, and a document G
, A discharge roller 25 for discharging the document G onto the document discharge tray 10 movable in the front-rear direction,
A contact sensor 26 for reading image information of the original G is provided.

The panel section 16 includes an upper document guide 27 for guiding the upper side of the document G, a separation piece 28 pressed by the separation roller 23, and a feeding roller 2 pressed by the feeding roller 24.
9. A paper discharge roller 30 pressed by the paper discharge roller 25, a reading white background 31 that is pressed by the contact sensor 26 and serves as a reading white reference, and a release lever that releases the pressing of the separation piece 28 to convey a thick original G. 19 etc.

The upper document guide 27 further includes a display unit such as an LCD (not shown), operation keys such as operation dial keys, and a panel board 16 on which these are mounted.
A panel frame 18 provided with c and the like is attached.

The operation of conveying and reading the original by the scanner body 17 is performed by a motor and a sensor drive circuit (not shown).
Is performed by the control device 70 shown in FIG.

Next, the printer section 2 will be described.

The printer unit 2 includes a paper feed unit 2A, a recording unit 2B
And a reversing sheet feeding section 2C.

The paper feeding section 2A is supported by a half-moon-shaped paper feeding roller 32, a recording paper mounting table 11, and a recording paper mounting table 11, and is directed toward the paper feeding roller 32 by a spring (not shown). The apparatus includes a pressed middle plate 33, separation means such as a separation claw or a friction plate (not shown) arranged on the downstream side in the feeding direction of the recording paper mounting table 11.

Note that a recording paper support table 14 for preventing the recording paper from hanging is built in the recording paper mounting table 11 so as to be extendable and contractible, and as shown in FIG. 1 according to the size of the recording paper. The recording paper support table 14 is appropriately pulled out. The middle plate 33 is provided with a side guide 12, and the side guide 12 regulates the position of the recording sheet S in the width direction.

Then, while being stacked on the middle plate 33 as described above, the back surface is supported by the recording paper support table 14,
The recording paper S whose position in the width direction is regulated by the side guide 12 is fed out one by one by the paper feed roller 32 and the separating means, and then sent out to the recording unit 2B.

On the other hand, in the present embodiment, the recording section 2B employs an ink jet recording method in which ink is ejected from a recording head to record an ink image on a recording sheet S. The recording unit 2B is supported by a guide shaft 45 and attached to a reciprocating carriage 46, a recording head 47, a printer chassis 41 fixed to the lower cover 4 and serving as a frame of the recording unit 2B. The paper feed roller 42 feeds the recording paper S sent from the paper feeding unit 2A below the recording head 47 by pressing and contacting the pinch roller 43, and a platen 44 that supports the back surface of the recording paper at the recording position. I have.

Here, the paper feed roller 42 is rotatable in the normal and reverse directions.
After an image is recorded on the recording paper S sent out below the recording head 47, the recording paper S is reversed and the recording paper S is transported to the reversing paper feed unit 2C.

In the same figure, reference numeral 48 denotes a discharge roller pair which is a switching conveyance means.
The recording paper S on which the ink image has been recorded in the recording unit 2B by the forward rotation indicated by the arrow R is conveyed in the paper discharging direction and is stacked on the recording paper discharge table 13 provided on the lower cover 4. You. The paper discharge roller 48 rotates forward and reverse in the same direction as the paper feed roller 42 by driving the paper feed roller 42 transmitted via the transmission gear 61, and the recording paper S When the paper is conveyed to 2C, the paper
The recording paper S is transported together with the paper feed roller 42 to the reverse paper feed unit 2C by rotating in the reverse direction as shown by the arrow L with the reverse rotation of.

Reference numeral 15 denotes a recording paper support rod provided on the recording paper discharge table 13 so as to be able to be pulled out in the front-rear direction. When discharging a large-sized recording paper S, the recording paper support rod 15 is used. By pulling out the recording paper, the discharged recording paper is prevented from hanging.

On the other hand, the reversing sheet supply section 2C includes a reversing conveyance path 51 provided with a reversing conveyance roller 50 as reversing conveyance means, a reversing conveyance roller 58 pressed against the reversing conveyance roller 50, a manual paper feeding port 56 and the like. I have.

As shown in the drawing, the reverse transport path 51 includes an outer guide 52, an inner guide 53, a rear cover 6, which will be described later, and a reverse transport disposed inside a space formed by these guides and the like. It has a loop shape while being constituted by the roller 50.

Further, as shown in FIG. 3, a first switching lever 54 is provided at the end of the inner guide 53 on the recording portion side, and a second switching lever 55 is provided at the lower end of the outer guide 52 for pivoting. Have been. Note that the first and second switching levers 54 and 55 hang down on the rear cover in a state of being inclined toward the recording unit side by their own weights.

Then, as described later, after the ink image is recorded, the recording paper is guided to the reverse transport path 51 via the transport guide 57 and the first switching lever 54 by the reverse rotation of the discharge roller 48 and the paper feed roller 42. The paper S is conveyed while being wound while being wound around a reversing conveyance roller 50 that is driven to rotate in the direction of the arrow in the drawing, and then inverted, and then conveyed toward the paper feed roller 42 while pushing up the first switching lever 54 upward. It has become so.

On the other hand, the manual feed port 56 is provided on one side of the apparatus main body A on the side of the recording section 2B as shown in FIG. When the recording paper is manually fed, the recording paper is
5 is pushed upward and enters the reverse conveyance path 51.

The recording paper that has entered the reverse transport path 51 reaches the paper feed roller 42 while pushing the first switching lever 54 upward, and thereafter, when an image is to be recorded on only one side, After the recording is completed, the discharge roller 4
8, the recording paper is stacked on a recording paper discharge table 13. When an image is to be recorded on the back side, the sheet is conveyed to the reversing sheet feeding section 2C by the reverse rotation of the sheet feeding roller 42 and the sheet discharging roller 48.

In FIG. 1, reference numeral 49 denotes a recording relay board which relays signals of these motors, sensors, head drive circuits and the like and transfers them to the control device 70. Also, 60
Is an absorber that absorbs waste ink generated during operations such as ink clogging prevention in the printer unit 2. The absorber 60 is attached to the lower cover 4.

On the other hand, recording paper conveyance and recording operation of the printer unit 2 are performed by a motor, a sensor, a head driving circuit, etc., not shown, and the control thereof is performed by a control device 70 shown in FIG.

Next, a housing constituting the outer surface of the apparatus main assembly A will be described.

The outer surface of the apparatus main body A has a lower cover 4 as a first housing, an upper cover 5 as a second housing, and a rear cover as a third housing for covering the power supply 3 and guiding the recording paper S. 6 and the like.

Here, on the upper cover 5, a document table 7 on which a plurality of documents G to be read can be set.
Are rotatably supported to allow access to the recording head 47. The document table 7 is provided with a pair of sliders 8 whose width can be adjusted to guide the document in a width direction orthogonal to the document conveyance direction. Here, the slider 8 moves only one side, so that both move similarly around the central portion.

Further, the original placing table 7 is provided with a detachable original stacking tray 9. For example, when the A-size original G is conveyed toward the scanner section 1, the rear end of the original G may hang down. I try not to.

Next, the double-sided recording operation of the facsimile apparatus having the above-described components will be described.

When performing double-sided recording, first, the feed roller 3
2 and the separating means, the recording paper S, which is stacked on the recording paper mounting table 11 and whose width direction is regulated by the movement of the side guide 12, is separated and fed one by one from the uppermost side. Guide on platen.

At this time, the leading end of the recording paper S is detected by a sensor (not shown). When a signal indicating that the recording paper S is detected is input from this sensor, the control device 70 is a sheet feeding roller 4 after a predetermined time has passed.
2 to drive the recording paper S to the recording start position. At this time, since the paper discharge roller 48 is also rotated by transmitting the drive via the transmission gear 61, the paper discharge roller pair 48 also rotates in the same direction.

Next, the recording head 47 mounted on the carriage 46 is scanned in the width direction and recording is performed on recording paper based on image information from a host computer (not shown). In addition, at the time of this recording, when the recording for one line is completed, the sheet feeding roller 4
2, the recording paper S is fed at a predetermined pitch to record the next line. By repeating this operation, image information is sequentially recorded on the front side of the recording paper S.

Next, when the one-sided recording is completed in this manner, the paper feed roller 42 and the paper discharge roller 48 are rotated in the reverse direction of the arrow L. Thus, the recording paper S is conveyed in the reverse direction, passes through the conveyance guide 57, and further passes through the first switching lever 54 as shown in FIG.
1 and passes between the outer guide 52 and the inner guide 53, and then is reversely conveyed so as to wind around the reverse conveyance roller 50 rotating in the direction of the arrow as shown in FIG.

Further, after that, it makes one turn and again strikes the first switching lever 54. Here, since the first switching lever 54 hangs down on the rear cover 6 by its own weight toward the recording section, the recording paper S is moved while rotating the first switching lever 54 upward as shown in FIG. The paper passes through the paper feed roller 42 and is conveyed.

The leading end of the recording paper S is detected by a sensor, and when a signal indicating that the recording paper S has been detected is input from the sensor, the control device 70 causes a predetermined time to elapse. Thereafter, the paper feed roller 42 is driven to rotate forward in the R direction, whereby the recording paper S is conveyed to the recording start position on the platen 44. At this time, the discharge rollers 4
Since the drive 8 is also transmitted through the transmission gear 61 and rotated, the paper discharge roller pair 48 also rotates in the same direction.

Here, in FIG. 3, the recording paper S is guided to the portion formed by the upper surface of the inner guide 53 and the outer guide 52 in the reversing conveyance path 51 via the conveyance guide 57, A sufficient conveyance distance is secured until the paper sheet S rotates around and passes through a portion formed by the bottom surface of the inner guide 53 and the rear cover 6, and the recording paper S does not cross itself. Further, since there is enough time after the one-sided recording is completed, the recording surface is not rubbed and stained on the platen 44.

Next, as described above, the recording head 47 mounted on the carriage 46 is scanned in the width direction, and recording is performed in the same manner as the recording operation on the front side based on image information from the host. Recording is performed on the back side of the paper S. After the double-sided recording is completed in this manner, the recording paper S is conveyed downstream by the pair of paper discharge rollers 48, and the recording paper S
3 is discharged and loaded.

Here, the recording paper S loaded on the recording paper discharge table 13 and having been recorded on both sides is discharged such that the previously recorded surface is on the lower side. Thereby, when a plurality of sheets are recorded, the recording sheets S can be stacked in the page order, and it is not necessary to rearrange them, and post-processing such as bookbinding becomes easy.

In the above description, the double-sided printing operation has been described. However, similarly, only single-sided printing can be performed. In this case, after printing on one side, the paper feed roller 4
The recording paper S is discharged onto the recording paper discharge tray 13 as it is rotated forward without rotating the recording paper S in reverse.

Next, a description will be given of a double-sided recording operation in the case of manual feed of a facsimile apparatus.

For a recording sheet that cannot be automatically fed, such as a thick recording material, manual feeding is performed from the manual feeding port 56.
Here, when the manual sheet feeding is performed from the manual sheet feeding port 56, as shown in FIG. 3, the second switching lever 55 which is inclined toward the sheet feeding roller side and hangs down on the rear cover by its own weight causes the recording to be performed. Pressed by paper and turned upward,
As a result, the recording paper enters the reverse conveyance path 51.

Thereafter, the recording paper is conveyed between the reversing conveyance roller 50, the inner guide 53, and the rear cover 6 of the reversing conveyance path 51, pushes up the first switching lever 54, passes through the conveyance guide 57, and passes through the platen 44. Guided above.

The recording head 47 mounted on the carriage 46 on the platen 44 as described above.
Is scanned in the width direction, and recording is performed on the front side of the manually inserted recording paper based on image information from the host.

Next, after the image is formed on the front side as described above, the paper feed roller 42 and the paper discharge roller 48 are rotated in the reverse direction of the arrow L shown in FIG.
1 and then, as described above, is reversed in the reverse transport path 51 and transported to the recording start position on the platen 44.

As described above, the reverse transport path 51 and the manual transport path are also used, so that the reverse transport path 5 can be used.
It is possible to eliminate the need for a dedicated manual feed path different from the one described above, and the mechanism is simplified, so that the size and cost of the apparatus can be reduced.

A facsimile apparatus capable of performing double-sided recording can be provided with a streamlined configuration by using the same recording path and recording head 47 as for single-sided recording. As a result, the double-sided recording time can be reduced as compared with the related art.

Further, the reversing sheet feeding section 2C (reversing conveyance path 5)
1) is disposed between the recording unit 2B and the manual paper feed port 56 provided on the side of the recording unit 2B, so that the apparatus body A
Of the apparatus main body A can be reduced.

Next, a second embodiment of the present invention will be described.

FIG. 5 shows the configuration of the reverse transport path of the facsimile apparatus according to the present embodiment. In the figure, the same reference numerals as those in FIG. 1 indicate the same or corresponding parts.

In the figure, reference numeral 59 denotes a spur rotatably provided at a plurality of positions on the guide surface side of the outer guide 52 constituting the reversing conveyance path 51. The spur 59 is partially guided by the outer guide 52. The outer guide 52 is arranged so as to protrude from the surface toward the conveyance path, so that the guide surface of the outer guide 52 has irregularities.

By forming the unevenness on the guide surface of the outer guide 52 in this way, the recording paper is
When the recording sheet is guided around 1 and conveyed around the reverse conveying roller 50, the recording surface side can be prevented from contacting and rubbing with the guide surface of the outer guide 52, whereby the image quality can be maintained. Further, it is possible to smoothly carry out the operation of conveying the recording paper conveyed in the reverse conveyance path 51.

Next, a third embodiment of the present invention will be described.

FIG. 6 is a diagram showing a schematic configuration of a facsimile apparatus according to the present embodiment. In the figure,
1 denote the same or corresponding parts.

In the figure, 2D is a manual feed port 63.
And a reversing conveyance path 51 and a reversing conveyance unit detachably attached to the apparatus main body A. By attaching such a reversing conveyance unit 2D, a configuration similar to that of the above-described first embodiment is provided. To enable double-sided recording.

On the other hand, when double-sided recording is not necessary, FIG.
As shown in (2), the reverse transport unit 2D is detached from the apparatus main body A. Even when the reverse transport unit 2D is detached in this way, manual paper feeding must be performed through the manual paper feed port 62 shown in FIG. Is available. Note that the manual paper feed port 62 constitutes a mounting portion for the reversing and conveying unit 2D. When double-sided recording is required, the reversing and conveying unit 2D is attached to the manual paper feeding port 62. ing.

By removably attaching the reversing and conveying unit 2D to the apparatus main body A in this manner, two types of apparatuses, one-side recording and two-side recording, can be constituted by one housing, and initial costs such as a mold cost are reduced. Can be lowered.

In each of the embodiments described above,
Although a facsimile apparatus is exemplified as the image recording apparatus, the present invention is not limited to this. For example, a similar effect can be obtained by applying the present invention to an image recording apparatus used in other image forming apparatuses such as a printer and a copying machine. Obtainable.

In the above-described embodiment, the ink jet system is exemplified as the recording system. However, the present invention is not limited to this, and another recording system such as an electrophotographic system may be used.

[0083]

As described above, according to the present invention, the height of the apparatus main body can be improved by arranging the reverse conveyance path between the recording section and the manual paper feed port provided at the side of the recording section. The size can be reduced, and the reversal path can be shortened, whereby the size of the apparatus can be reduced and the throughput of double-sided recording can be improved. In the case of performing manual sheet feeding, the sheet fed manually is passed through the reversing conveyance path and conveyed to the recording unit, thereby eliminating the need for a dedicated manual conveyance path separate from the reversing conveyance path. The mechanism is simplified, and the size and cost of the device can be reduced.

[Brief description of the drawings]

FIG. 1 is a sectional view showing a schematic configuration of a facsimile apparatus which is an example of an image recording apparatus according to a first embodiment of the present invention.

FIG. 2 is a diagram showing a control block in the facsimile apparatus.

FIG. 3 is an enlarged view of a reversing sheet feeding unit provided in a printer unit of the facsimile apparatus.

FIG. 4 is a diagram illustrating a first state of the printer unit when the recording sheet is reversed and conveyed.
The figure which shows the state of a switching lever.

FIG. 5 is a diagram illustrating a configuration of a reverse conveyance path of a facsimile apparatus according to a second embodiment of the present invention.

FIG. 6 is a cross-sectional view of a facsimile apparatus according to a third embodiment of the present invention.

FIG. 7 is a diagram showing a state in which a reverse transport unit is removed from the facsimile apparatus.

FIG. 8 is a cross-sectional view of a conventional facsimile machine.

[Explanation of symbols]

 A apparatus main body 1 scanner unit 2 printer unit 2A paper feed unit 2B recording unit 2C reverse paper feed unit 2D reverse paper feed unit 16 panel unit 42 paper feed roller 47 recording head 48 paper discharge roller pair 50 reverse transport roller 51 reverse transport path 52 Outer guide 53 Inner guide 56, 62, 63 Manual feed port 59 Spur 70 Control device

Claims (5)

[Claims] 1. An image recording apparatus in which a sheet on which an image is recorded on one side is reversed and conveyed to recording means again, and an image is recorded on the back side of the inverted sheet, wherein the image is recorded on one side. A reversing transport path for reversing the sheet and transporting it to the recording unit again; selectively rotating the sheet on which an image is recorded on one side in a sheet discharging direction by forward rotation and in a direction of the reversing transport path by reverse rotation. A forward / reverse switchable transporting means for transporting, and a manual paper feeding port provided on one side of the apparatus main body for performing manual paper feeding, wherein the manual paper feeding port is provided on a side of the recording means. And the reverse transport path is disposed between the recording unit and the manual feed port so that the sheet manually fed from the manual feed port passes through the reverse transport path and is directed to the recording unit. Nishiko The image recording apparatus according to claim. 2. When an image is recorded on the back side of the manually fed sheet, after passing through the reverse conveyance path, the sheet on which an image is formed on one side by the recording means is again switched by the switching conveyance means. 2. The image recording apparatus according to claim 1, wherein the image recording apparatus is conveyed to the reverse conveyance path. 3. The reversing conveyance path having a loop shape, reversing a sheet conveyed on the reversing conveyance path, conveying the sheet to the recording unit, and forming an inner peripheral surface of the reversing conveyance path. 3. The image recording apparatus according to claim 1, further comprising a transport unit. 4. The spur according to claim 1, wherein a spur is provided on a guide member arranged on an outer periphery of the reversing conveyance means and forming the reversing conveyance path together with the reversing conveyance means. Image recording device. 5. The image according to claim 1, wherein a reverse transport unit having the manual feed port and the reverse transport path is detachably attached to the apparatus main body. Recording device.