JPH02216962A - Facsimile equipment - Google Patents

Abstract

PURPOSE:To obtain a simple and compact facsimile equipment containing a paper supply roll by sharing the transmission and reception sides via a motor and a paper feed roll. CONSTITUTION:A paper feed roll 9 is prepared together with a paper supply roll 34, and a transmission side original reading part 4 and a reception side print part 5 which are set opposite to each other centering the roll 9 with a contact secured to each other. A motor 21 is connected to both rolls 9 and 34 via the 1st driving force transmission systems 23 and 27 and also to both parts 4 and 5 via the 2nd driving force transmission systems 24, 25, 28, 6 and 8. Both rolls 9 and 34 are revolved in the prescribed direction by the motor 21 and at the same time both parts 4 and 5 are attached to and detached from the roll 9 alternately. Thus the roll 9 is shared by the transmission and reception sides. As a result, a simple and compact structure is attained for a facsimile equipment.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a facsimile machine, and more specifically, to a paper feeding mechanism for a document and recording paper thereof.

[Conventional technology]

The internal structure of a facsimile machine can be roughly divided into a sending side and a receiving side. A paper feed roller is provided on both the transmitting and receiving sides, and an image sensor, for example, serving as document reading means is pressed against the transmitting side roller, and a thermal head, for example, serving as printing means is pressed against the receiving side roller. Conventionally, each roller is driven by a different motor.

[I1 Problem to be Solved by the Invention] As mentioned above, conventional devices generally require two paper feed rollers and two related motors. This has become an obstacle. However, although there has recently been a trend to share the motors for the sending and receiving rollers, the fact remains that two rollers are still used.
It is not enough to say that it can be made smaller.

Therefore, an object of the present invention is to make it possible to miniaturize the layer and simplify the structure by sharing even the paper feed roller between the sending side and the receiving side, and also to provide a facsimile machine equipped with an automatic paper feeding mechanism. Our goal is to provide the following.

[Means to solve the problem]

In order to achieve the above object, the present invention includes one paper feed roller and a paper feed roller that supplies a document to be sent (or copied) to the same paper feed roller, and a paper feed roller that contacts the same roller across this paper feed roller. A sending side document reading section and a receiving side printing section, which are arranged opposite to each other, are connected to the paper feed roller and the paper feeding roller via a first driving force transmission system, and a second driving force one motor connected to each of the sending-side document reading section and the receiving-side printing section via a transmission system, and with this one motor,
The paper feed roller and the paper feed roller are rotated in a predetermined direction, and the sending side original reading section and the receiving side printing section are alternately moved toward and away from the paper feeding roller. There is.

[For production]

When transmitting a document, the printing section on the receiving side is separated from the paper feed roller via the second driving force transmission system. On the other hand, at the time of receiving and copying a document, the printing section on the receiving side is pressed against the paper feed roller. The paper feed roller is connected to the paper feed roller and rotated in the same direction when transmitting the original and copying the original.

〔Example〕

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

As shown in FIG. 1, this facsimile apparatus includes a substantially box-shaped housing 1 having an openable/closeable cover 2 on the receiving side and an openable/closeable cover 3 on the transmitting side. In this case, the covers 2 and 3 have hinge fulcrums 16 and 17 relative to the housing 1 on their base end sides, and are formed facing each other so as to form both walls of the housing 1. In addition,
The free ends 2a and 3a of the cover 2 and the cover 3 form a document insertion port A and a recording paper discharge port B between the free ends 2a and 3a of the cover 2 and the ceiling wall 1a of the housing 1.

Since this facsimile device is preferably used with the housing 1 standing up as shown, a handle 1a is provided at the top of the housing 1, and in this embodiment, the handle 1a is provided at the top of the housing 1.
serves also as a stand for placing the transmission original 18.

A single paper feed roller 9 is provided within the housing 1, and a recording paper 12 wound into a roll is stored below the roller. Further, a paper feed roller 34 is provided above the paper feed roller 9 to feed the transmission mW (or copy original) 18 toward the paper feed roller 9.

A brake pad 35 for preventing double feeding is pressed with an appropriate spring force.

A lever 6 having a thermal head 5 as a printing section on an upper end 6a is swingably attached to the receiving side cover 2 via a support shaft 7. Upper end 6a of lever 6 and cover 2
A coil spring 15 is provided between the thermal head 5 and the paper feed roller 9 to press the thermal head 5 into contact with the paper feed roller 9. Further, the lever 6 is provided with a recording paper guide 20. In this example, the recording paper guide 20 is provided on the housing 1 side via a coil spring 13a, and the recording paper holder is made of a plate spring that holds the recording paper 12 with a predetermined frictional force between it and the base 13. .

A lever 8 having an image sensor 4 as a document reading section on an upper end 8a is swingably attached to the transmission side cover 3 via a support shaft 29. A coil spring 14 is provided between the upper end 8a of the lever 8 and the cover 3 for pressing the image sensor 4 against the paper feed roller 9. In this way.

The thermal head 5 and image sensor 4 are pressed against one paper feed roller 9 from both sides thereof.

FIG. 2 shows driving means for driving the paper feed roller 9 and each lever 6.8. Namely.

This drive means includes a motor 21 that can rotate in forward and reverse directions.

A first one-way clutch gear 23 and a second one-way clutch gear 24 are meshed with the output shaft 22 . In this case, the rotation transmission direction of the first one-way clutch gear 23 is, for example, a left-handed rotation direction, whereas that of the second one-way clutch gear 24 is made to rotate in a right-handed direction.

The first one-way clutch gear 23 is connected to a driven gear 26 of the paper feed roller 9 via a belt 27 (or a gear train). A drive gear 37 for driving a paper feed roller is connected to the driven gear 26 via an intermediate gear 36 . In this case, a one-way clutch 38 is interposed between the drive gear 37 and the rotation shaft 34a of the paper feed roller 34, which slips in the left rotation direction when the rotation shaft 34a is faster. Further, although not shown in detail, the intermediate gear 36 serves as an image sensor for the paper feed roller 9.
4 contact and separate, the driven gear 26 and the driving gear 3
7 is selectively interposed between the two.

The second one-way clutch gear 24 is connected to the cam transmission gear 25 via a belt 28 (or a gear train). Two gears 30 and 31 each having an eccentric cam of 10° and 11 are meshed with this cam transmission gear 25. The eccentric cam 10.11 is arranged in the housing 1 so as to act on the respective lower ends 6b, 8b of the levers 6 and 8, and in this embodiment, the eccentric cam 10.1
1 has a rotational phase angle of 90 degrees.

Next, the operation of this facsimile device will be explained.

At the time of initialization and copying, the eccentric cams 10 and 11 are
As shown in FIG. 1, there is a position in which neither of them acts on the lever 6.8, so the image sensor 4 and the thermal head 5 are placed in pressure contact with the paper feed roller 9. , the intermediate gear 36 is meshed between the driven gear 26 and the drive gear 37.

In this state, when the copy document 18 is inserted from the document insertion slot A and is detected by a sensor (not shown), the motor 21 rotates to the right, that is, clockwise in FIG. 2. As a result, the paper feed roller 34 rotates to the left via the first one-way clutch gear 23, the belt 27, the driven gear 26, the intermediate gear 36, and the drive gear 37, and directs the copy document 18 toward the paper feed roller 9. and send it out,
When the copy document 18 is fed to a predetermined position and detected by a sensor (not shown), the motor 21 is stopped.

Then, when the copy button (not shown) is pressed,
The motor 21 rotates to the right. As a result, the paper feed roller 9 is rotated to the left (counterclockwise) via the first one-way clutch gear 23 and the belt 27, and the copy original 18 is read by the image sensor 4, and its contents are The image is copied onto the recording paper 12 by the thermal head 5. In this case, the paper feed roller 34 also rotates to the left via the intermediate gear 36 and the drive gear 37, but since the paper feed roller 9 rotates faster, the presence of the one-way clutch 38 causes the paper feed roller 34 to rotate to the left. It rotates as if being pulled by the paper feed roller 9. Note that when the motor 21 rotates in the right direction, the second one-way clutch gear 24 slips.
The rotation is not transmitted to the cam transmission gear 25.

In the transmission mode, the motor 21 is rotated in the reverse direction (counterclockwise in FIG. 2) from the initial and copying states, and the gear 30 is rotated through the second one-way clutch gear 24, the belt 28, and the cam transmission gear 25. counterclockwise 90
As shown in FIG.
At this time, let go.

The gear 31 also rotates 90 degrees counterclockwise, but the other eccentric cam 11 does not act on the transmission lever 8 yet, and the image sensor 4 remains in pressure contact with the paper feed roller 9. Also, during this reverse rotation, the first one-way clutch gear 2
3 slips and the 1 paper feed roller 9 does not rotate.Then, the motor 21 is rotated forward to rotate the 5 paper feed roller 9, and the original 18 is read by the image sensor 4, thereby transmitting the original. . As described above, even if the thermal head 5 is separated from the paper feed roller 9, the recording paper 12 is held by an appropriate frictional force between the recording paper guide 20 and the recording paper holder 13.

In the reception mode, the motor 21 is further rotated in the reverse direction (counterclockwise in FIG. 2) from the state in the transmission mode, and the gear 31 is rotated through the second one-way clutch gear 24, the belt 28, and the cam transmission gear 25. The image sensor is rotated 90 degrees clockwise, and as shown in FIG. -4 to paper feed roller 9
Along with this, the gear 30 also rotates counterclockwise by 90 degrees.
As the thermal head 5 rotates, one of the eccentric cams 10 is disengaged from the receiving lever 6, so that the thermal head 5 comes into pressure contact with the paper feed roller 9.

Thereafter, as the motor 21 rotates forward, the paper feed roller 9 feeds the paper, and the thermal head 5
The received signal is recorded on recording paper 12 at .

In this case, the intermediate gear 36 separates from between the driven gear 26 and the driving gear 37, as shown by the imaginary line in FIG.

Paper feed roller 34 does not rotate.

〔Effect of the invention〕

As explained above, according to the present invention, the structure in which the sending side and the receiving side are shared by one motor and one paper feeding roller is simpler and more compact, and the structure is also equipped with a paper feeding roller. A facsimile machine is provided.

[Brief explanation of the drawing]

FIG. 1 is a sectional view showing an embodiment of a facsimile apparatus according to the present invention, and FIG. 2 is a configuration diagram showing its driving means.
FIG. 3 is a sectional view showing the state in transmission mode, and FIG. 4 is a sectional view showing the state in reception mode. In the figure, 1 is a housing, 2 and 3 are covers, 4 is an image sensor, 5 is a thermal head, 6 and 8 are levers, 9 is a paper feed roller, 10 and 11 are eccentric cams, 12 is recording paper, and 20 is a Recording paper guide, 21 is a motor, 23.24° 38 is a one-way clutch gear, 34 is a paper feed roller, 36 is an intermediate gear, 3
7 is a drive gear. Figure 1 Patent applicant Fujitsu General Co., Ltd. Agent Patent attorney Takuya Ohara Figure 1 Box head

Claims (5)

[Claims] (1) One paper feed roller, a paper feed roller that supplies the original to be sent (or copied) to the same paper feed roller, and a transmission roller that is arranged oppositely so as to be in contact with the same roller across this paper feed roller. The side document reading unit and the receiving side printing unit are connected to the paper feed roller and the paper feed roller via a first driving force transmission system, and the sending side document is connected to the sending side document via a second driving force transmission system. one motor connected to each of the reading section and the receiving side printing section, and the one motor rotates the paper feed roller and the paper feeding roller in a predetermined direction, and the sending side document reading section A facsimile machine characterized in that the and receiving side printing section are alternately brought into contact with and away from the paper feed roller. (2) Between the paper feed roller and the paper feed roller,
2. The facsimile apparatus according to claim 1, further comprising an intermediate gear selectively interposed therebetween in connection with the operation of said sending side document reading section. (3) The facsimile machine according to claim 1 or 2, wherein the paper feed roller is provided with a one-way clutch on its rotating shaft. (4) The motor is capable of forward and reverse rotation, and the first and second driving force transmission systems are connected to the motor via one-way clutch gears each having a different rotation transmission direction. Facsimile machine as described. (5) The facsimile apparatus according to claim 2, wherein the second driving force transmission system includes two eccentric cams that act on the sending document reading section and the receiving printing section with different phases.