JPH0351242A - Sheet feed device for facsimile - Google Patents

Abstract

PURPOSE:To obtain a copy superior in quality by utilizing gears provided with one-way clutch, and rotating a transmitter-side roller and a receiver-side roller by a motor simultaneously and in the same direction when the pictures are received or copied. CONSTITUTION:When a motor M is rotated, for example, in the forward direc tion, a first gear A provided with a one-way clutch and its rotary shaft are connected to each other to drive a transmitter-side roller R1 through at least one transmission gear E, and a receiver-side roller R2 is rotated in the same direction as the transmitter-side roller R1 through second and third gears B, C provided with one-way clutch, On the other hand, when the motor M rotates in the reverse direction, the fist gear A provided with one-way clutch and its rotary shaft S are brought into a state of idle running, while the second gear B provided with one way clutch and its rotary shaft are connected to each other. Further, the third gear C provided with one-way clutch and the receiver- side roller R2 are brought into an idle running state. As a result, only the transmitter-side roller R2 is rotated.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a facsimile paper feeding device, and more specifically, to a facsimile paper feeding device in which a sending roller and a receiving roller are driven by a single reversible motor. This relates to a paper feeding device.

[Conventional technology]

When driving a sending roller and a receiving roller with one motor, conventionally the sending roller and the receiving roller are connected to the output gear of the motor through gears with one-way clutches having different rotational connection directions. That's what I do.

That is, when the motor rotates in the forward direction, for example, only the transmitting side roller is rotated, while when the motor rotates in the reverse direction, only the receiving side roller is rotated.

[Problem to be solved by the invention]

However, according to the above conventional example, it is not possible to rotate the sending roller and the receiving roller at the same time. Therefore, especially during copying operations, the sending roller and the receiving roller must be rotated alternately and intermittently. The drawbacks were that white spots and overlaps were likely to occur in the print, and the image quality of the print was poor.

[Means to solve the problem]

In order to solve the above problems, the present invention provides a facsimile paper feeding device in which a single reversible rotary motor drives a sending roller and a receiving roller. and a second gear with a one-way clutch are engaged directly or through an intermediate gear, and the rotating shaft of the first gear with a one-way clutch is connected to the driven gear of the sending roller via at least one transmission gear. At the same time, the rotation shaft of the second gear with one-way clutch is connected to the driven gear of the sending roller via at least two transmission gears, and the rotation shaft of the second gear with one-way clutch is connected to the driven gear of the transmission side roller through at least two transmission gears, and The receiving roller is connected via a different third gear with a one-way clutch.

[For production]

For example, when the motor rotates in the forward direction, the first gear with a one-way clutch and its rotating shaft are connected, the transmission side roller is driven via at least one transmission gear, and the second
The receiving roller is rotated in the same direction as the transmitting roller via a third gear with a one-way clutch. in this case,
The gear with the second one-way clutch and its rotating shaft are in an idling state.

On the other hand, when the motor rotates in reverse, the gear with the first one-way clutch and its rotating shaft are idle.

A second gear with a one-way clutch and its rotating shaft are connected to this. Furthermore, the third one-way clutch equipped gear and the receiving roller are also in an idling state. therefore,
Only the sending roller will be rotated.

〔Example〕

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

As shown in FIG. 1, this paper feeding device is equipped with one reversible rotary motor M. As shown in FIG. The output gear of this motor M is meshed with a first gear A with a one-way clutch and a second gear B with a one-way clutch.

In this case, the first gear A with a one-way clutch is connected to the rotating shaft S1 when rotating in the counterclockwise direction shown in the figure (during reverse rotation), and is connected to the rotating shaft S1 when rotating clockwise in the drawing (during forward rotation). It spins idly. On the other hand, the second gear B with a one-way clutch is connected to the rotating shaft S2 when rotating in the clockwise direction (forward rotation) as shown, and is connected to the rotation shaft S2 when rotating in the counterclockwise direction (reverse rotation) as shown in the figure.
, it idles around the rotation axis S2.

The rotation shaft S1 of the first gear A with a one-way clutch is provided with a transmission gear E that meshes with the driven gear RG of the transmission roller R1. Further, the rotation shaft S2 of the second one-way clutch equipped gear B is connected to the driven gear RG of the transmission side roller R1 via two transmission gears F.

On the other hand, a third gear C with a one-way clutch is attached to the rotating shaft S3 of the receiving roller R2, and the gear C is meshed with a second gear B with a one-way clutch. In this case, like the second gear B with a one-way clutch, the third gear C with a one-way clutch is connected to the rotating shaft S3 of the receiving roller R2 during clockwise rotation (forward rotation) in the illustration, and During clockwise rotation (reverse rotation), it idles with respect to the rotating shaft S3.

FIG. 2 shows the operating state during transmission.

That is, at this time, the motor M is rotated in the opposite direction (counterclockwise in the drawing), and accordingly, the first and second gears A and B with one-way clutches are both rotated in the forward direction, and the third gear with one-way clutches is rotated in the forward direction. C rotates in the opposite direction. therefore,
Both the first and third one-way clutch gears A and C become idling with respect to their rotational axes S2 and 83, and the second
Only gear B with a one-way clutch is connected to its rotating shaft S1, and the transmission roller R1 is rotated in the forward direction (clockwise in the drawing) via the transmission gear F.

When receiving or copying, as shown in FIG. 3, the motor M is rotated in the forward direction (clockwise in the figure), and the first and second gears A with one-way clutches are accordingly rotated.
, B rotate in the opposite direction, and the gear C with the third one-way clutch rotates in the forward direction. Therefore, gears A and C with first and third one-way clutches are both connected to their rotating shafts S2 and S3, and only gear B with second one-way clutch is idling with respect to its rotating shaft S1. becomes. As a result, the sending roller R1 is rotated in the forward direction (clockwise in the drawing) via the transmission gear E, and the receiving roller R2 is also rotated by the second and third one-way clutch equipped gears B,
It will be rotated in the positive direction via C.

In addition, as a modification, an intermediate gear may be interposed between the output gear of the motor M and the first and second gears A and B with one-way clutches. Further, if the condition that the sending roller R1 and the receiving roller R2 rotate in the same direction during reception/copying is satisfied.

The number of transmission gears is also not limited to this embodiment.

〔Effect of the invention〕

As explained above, according to the present invention, by skillfully utilizing a gear with a one-way clutch, a single motor drives the transmitting roller and the receiving roller simultaneously and in the same direction during reception or copying. It can be rotated and therefore copies of particularly good quality can be obtained.

[Brief explanation of drawings]

FIG. 1 is a structural diagram schematically showing an embodiment of a facsimile paper feeding device according to the present invention, FIG. 2 is an explanatory diagram showing the operating state of the same embodiment during transmission, and FIG. 3 is an embodiment of the same embodiment. FIG. 3 is an explanatory diagram showing an example operating state during reception/copying. In the figure, A, B, C are gears with one-way clutches, D, E,
F' is a transmission gear, M is a motor, SL, and S2 and S3 are rotating shafts.

Claims (1)

[Claims] (1) In a facsimile paper feeding device in which a sending roller and a receiving roller are driven by a single reversible motor, the output gear of the motor is equipped with first and second one-way clutches with different rotational connection directions. The gears are engaged directly or through an intermediate gear, and the rotating shaft of the first gear with a one-way clutch is connected to the driven gear of the transmission roller via at least one transmission gear, and the second gear is connected to the driven gear of the transmission roller. At least two rotational axes of gears with one-way clutches
The transmission side roller is connected to the driven gear of the transmission side roller through two transmission gears, and the reception side is connected to the second one-way clutch equipped gear via a third one-way clutch equipped gear whose rotational connection direction is different from that of the second one-way clutch equipped gear. A facsimile paper feeding device characterized by connecting rollers.