KR930002684B1 - Paper supply roller driving method for fax - Google Patents

Abstract

The first roller (1), the second roller (2) and the third roller which are provided at the feed path of receiving part are rotating in the document feed direction. When the end of the documents reaches the reading part (4) and start, the first roller stops by one way bearing (19)(21) provided at both sides of roller shaft until the end of document is sensed. The second and the third roller are rotated in the document feed direction so that the feed of folded document is prevented and a piece of document is fed.

Description

How to Drive Rollers for Feeding FAX

1 is a plan view of a state in which a portion of the cover portion of the fax to which the present invention is applied is cut away.

2 is a side view of the facsimile feeder unit of the present invention.

a is a state diagram of the right side of the paper feed unit.

b is a state diagram of the left side of the paper feed unit.

3 is a cross-sectional view showing the inside of the fax transmission section of the present invention.

* Explanation of symbols for main parts of the drawings

1, 2, 3: 1st, 2nd, 3rd roller 4: Poison part

5, 6, 7: Roller shaft 8: Step motor

9, 10, 11, 12, 13, 14, 16, 17, 18, 20, 22, 23, 24, 25, 26, 27: gear

15, 19, 21: Winway bearing 30: Side wall chassis

The present invention relates to a paper feeding device of a facsimile, and in particular, even when paper is fed to the reading part in a stack when supplying the paper to the transmitting part of the facsimile type facsimile, thereafter, the paper is sequentially fed through the transmission part one by one due to the frictional force caused by the reverse rotation of the feeding roller. This method relates to a roller driving method for document transfer.

ADF (Automatic Document Feed) to prevent the stacking of originals in the sending part in order to prevent the paper from passing in the stacking state in the conventional fax machine and ADF contacting the roller surface with elastic force Separator was installed to prevent the paper from being fed in a stack by the friction force generated between them.

However, the thinner the paper is, the more flexible it is and the weaker the static electricity. Therefore, even though the frictional force of the ADF roller is transmitted to the paper, the paper is passed through the transmitter in the overlapped state. There was a lunge that was received missing.

In order to solve this problem, in the case where the thickness of the original is thin, a configuration has been proposed to prevent overlapping of the originals by passing the transmission unit with one original sandwiched between thin and transparent guide plates. In the case of transmission, there has been a closure of a longer transmission time.

In addition, when automatically separating and supplying a plurality of originals, a gap was formed between the end of the discharged original and the end of the original to be read by using the diameter of the roller. There was no.

In view of the above problems, the present invention devised to continuously supply sheets without using a thin and transparent guide plate is intended to solve the conventional problems.

The above object is that the first, second and third feed rollers installed in the facsimile transmitting unit rotate simultaneously in the same direction so that the original is fed to the reading position, and when the original start end reaches the reading position, the first rotation is reversed by the motor. The feeding roller is stopped by providing a roller driving method having a configuration in which only the second and third rollers are rotated.

Other objects and other features of the present invention will become apparent from the detailed description and the accompanying drawings and claims.

The paper feed apparatus of the present invention has a first roller (1) for feeding a single document, a second roller (2) for guiding a sheet separated into sheets to a reading part (4) provided with contact glass, and a reading position. It consists of a configuration provided with a third roller 13 for transferring the reached document according to the reading speed.

The first roller 1, the second roller 2, and the third roller 3 receive the driving force of the step motor 8, and the step motor 8 is installed on the side chassis 30. Second, third, fourth, fifth, sixth (10), (11), (12), (13) and (14) are interlocked with the first gear (9) installed on the shaft (8a) of (8) to drive the force. And the driving force of the second roller 2 through the sixth gear 14, the seventh, the eighth, and the ninth (16) (17) (18). 1) is delivered. The driving force of the second roller 2 is 10, 11, 12, 13, 14, 15, 16, 17 (18) (20) (22) (23) (24) (25) (26) (27). It is transmitted to the third roller (3) through.

As described above, the driving force of the step motor 8 is the first to thirteenth gears (9, 10, 11, 12, 13, 14, 16, 17, 18, 20, 22, 23, 24, 25, 26, 27). When they are rough, they all rotate in the same direction.

In the same direction, the original is rotated in the direction of moving the original sheet separating roller, that is, the first roller 1 from the first roller 1 to the third roller 3.

In the state where the first, second, and third rollers (1), (2), and (3) are installed as described above, winway bearings (19) and (21) are respectively provided on both ends of the shaft (5) of the first roller (1). The shaft is mounted, and the winway bearing 15 is attached to only one side of the shaft 6 of the second roller 2.

In the present invention having such a configuration, the original is placed on the sheet feeder 31 and supplied separately when the original is inserted between the original sheet feeder 32 and the original sheet feed roller 1.

At this time, the original sheet feeder (1) and the feed feed roller (2) convey the original to the reading part (4). When the original passes through the second roller (2), the frictional force due to the reverse rotation of the second roller is not known. Separate originals that could not be separated are separated.

When the front end of the document passing through the second roller 2 reaches the reading part 4, the sensor detects this state and the step motor 8 reversely rotates in the reverse direction. When the stepper motor 8 reversely rotates, the first to sixth gears 9, 10, 11, 12, 13, and 14 naturally rotate inversely, and the rotational force opposite to the rotation direction generated so far is reduced. One-way bearings (15) and (19) (21), which are transmitted to the first roller (1) and the second roller (2), and which can rotate only in one direction, are installed to facilitate the sheet feeding operation of the original. The roller is driven by the bearing of the way bearing and gear.

That is, the winway bearings 19 and 21 are provided at both ends of the shaft 5 of the first roller 1, and the winway bearing 15 is provided at only one end of the shaft 6 of the second roller 2. Is installed.

The interaxial distance formed between the first roller 1 and the second roller 2 is connected in an array of seventh and eighth gears 16 and 17 on the left side and connected to the twelfth gear 22 on the right side. When the step motor 8 rotates forward in the state, the first, the second, the third, the fourth, the fifth, the sixth, the seventh, the eighth, the nine, the gears 9, 10, 11, 12, 13, 14, 16, 17, 18 The first roller 1 rotates together with the winway bearings 19 and 21 by the driving force transmitted through the plurality of blades.

The first gear 1 is provided with winway bearings 19 and 21, which transmit power to the roller shaft 5 only when rotating in the paper feed direction, and only when rotating in the paper insertion direction. The power is transmitted to the roller shaft 5, and it rotates due to the slip action when rotating in the paper insertion direction.

Then, the driving force reached to the first roller 1 is the eleventh, 12, 13, 14, 15, 16, 17 (20, 22, 23) through the twelfth gear 10 axially installed in the first roller 1. , 24, 25, 26, 27, the shaft 6 of the second roller (2) is fitted to the thirteenth gear (23), the second roller is driven by the power transmitted to the thirteenth gear (23) On the scan4.

Therefore, the first, second and third rollers 1, 2 and 3 all rotate in the paper feed discharge direction.

When the leading edge of the paper reaches the position of the reading part 4, the sensor detects this and stops the step motor 8, and when the start button (not shown) is pressed, the center of the paper feed is temporarily centered. Restart it.

At this time, the driving of the step motor 8 is reversely rotated so that the sixth gear 14 shaft-mounted on the second roller 2 does not slip and rotates together with the winway bearing 15 in the paper conveying direction to scan the paper. Supply to book (3).

At this time, the reverse driving force reversely rotates the first roller 1 through the 11th and 10th gears 20 and 19 through the axis of the second roller, but the 10th and 11th gears 19 and 20 by the winway bearing. ) Is slipped and the first roller 1 remains stationary.

In addition, since the second roller 2 rotates in the paper feed direction, the power of the 12th, 13th, 14th, 15th, 16th, and 17th gears 22, 23, 24, 25, 26, and 27 is rotated by the stepper motor. The paper is rotated in the same direction as the paper conveyance, and the paper is moved through the scan 3.

As described above, the present invention has an effect of preventing the stacking of documents as much as possible by rotating the first roller for separating the original sheets when the paper is inserted, and stopping the paper when the sheets reach the scanner by using the stepping and stepping motor. When the next original is supplied, the original sheet feed roller is stopped, and the original must be squeezed out so that new originals are inserted. This prevents overlapping of the originals in the entry-level facsimile and creates a clear gap between the originals and the originals. For the composition of the original sheet feeder, it is effective to prevent the overlapping feed of the original by only the driving state of the roller without making the diameter of the roller different.

Claims (2)

When the document is inserted, the first roller 1, the second roller 2, and the third roller 3 provided in the transmission path of the facsimile machine rotate in the document feed direction, and the leading end of the document reaches the reading part 4. After starting, the first roller 1 stops until the end of the original is detected by the winway bearings 19 and 21 installed on both sides of the roller shaft due to the reverse rotation of the step motor 8. The third roller (2) (3) is rotated in the document feed direction to prevent the insertion of the original sheet and the sheet feeding roller configuration method of the low-cost type facsimile facilitator configured to be performed at the same time. The method of claim 1, wherein when the first roller (1) rotates, the winway bearing 15 on one side of the second roller (2) is idle, and the lower twelfth gear (23) is the tenth, eleven of the first roller (1). The roller feeder drive method of the popular type fax machine to rotate the second roller (2) in response to the driving force transmitted through the gear (20, 22).