JPS6034301B2 - Recording paper conveyance device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a recording paper transport device that reliably transports recording paper when the recording paper is transported by a plurality of driving members.

In conventional facsimile receivers that use roll-shaped recording paper, the recording paper is pinched and conveyed between a pinch roller and a capstan, recorded with a recording member, and then the recorded portion of the recording paper is cut with a cutting member. Cut and separate, but
Since the recording member and the cutting member have a certain distance, a non-recording portion of the above-mentioned distance exists at the tip of the initial recording portion, and the cutting member cuts and separates the non-recording portion and the recording portion. Was. However, since the unrecorded portion and the recorded green portion were directly fed from the same drain port, it was necessary to sort out the unrecorded portion from the 8E outlet and dispose of it. The present invention provides a facsimile receiver that eliminates such drawbacks, and is provided with a separation plate having a sorting function, and the non-recorded portion of the recording paper is separated into a paper storage box, and the recorded portion is separated and discharged into a tray. A discharge section was provided to transport the liquid.

The ejecting section is configured such that the 8E feed speed of the ejecting section is set higher than the conveying speed of the pinch roller and capstan to perform rapid conveyance and not to disturb the conveying speed during recording. It has the following. The contents will be explained below according to the drawings.

FIG. 1 is a side view showing the inside of a facsimile receiver to which the present invention is applied, and the inside of the body 1 forming the outer shape of the facsimile receiver can be functionally divided into the following seven parts. That is, for recording. An upper recording paper storage section 2 for loading and storing roll-shaped recording paper; a lower recording paper storage section 3 having the same configuration as this; and a lower recording paper storage section 3 for transporting the recording paper conveyed from the upper or lower recording paper storage section. a recording paper conveyance section 4, a recording section 5 for recording on the recording paper conveyed from the recording paper conveyance section and cutting the recording paper, a recording paper recorded by the recording section or unrecorded paper; A discharge section 6 for discharging recording paper (slip paper), the upper and lower recording paper storage sections 2 and 3, the recording paper transport section 4, the recording section 5, and the 8E transport section 6 are provided with the recording paper. It is comprised of a control circuit 7 for sending signals for conveying, stopping, cutting, rewinding, and separating the paper, and a recording circuit 8 for supplying recording signals to the recording section 5. The transport path of the recording paper will be explained with reference to FIG.

When the recording paper 9 is stored in the recording paper storage section 2 and the recording paper 10 is stored in the lower recording paper storage section 3, the recording paper 9 in the upper recording paper storage section 2 is conveyed preferentially. If only one of the recording papers 10 is stored, the stored recording paper is conveyed. Now, assuming that recording papers 9 and 10 are both stored in the upper and lower recording paper storage sections 2 and 3, the leading end 9a (not shown) of the recording paper 9 in the upper recording paper storage section 2 is moved by a motor (not shown). It passes through the inside of the guide plate 13 while being held between the grip roller 11 which is driven by the feed roller 11 and the feed loaf 12 which is rotatably arranged. In the recording paper conveying section 4, the feeding belt 16 is suspended between the feeding drum 14 and the pulleys 15, 15a, and 15b, so that the leading edge 9a of the recording paper 9 that has passed through the inside of the guide plate 13 is connected to the feeding drum 14 and the feeding belt. 16, passes between the feed pulleys 15 and 17, passes between the green needle 18 and the push plate 19, is held between the capstan 20 and the pinch roller 21, and passes between the cutting members 22 and 23. Sections 24 and 24a (24a is not shown) for detecting the arrival of the recording paper 9 are disposed on the side of the cutting member 23 in the recording paper traveling direction, and detect the arrival of the leading edge 9a of the recording paper 9. As a result, the recording paper feeding mechanisms in the upper and lower recording paper storage units 2 and 3, the recording paper transport unit 4, and the recording unit 5 are brought to a halt state. With the above steps, the printer enters a reception standby state in which recording paper is loaded. If a transmission signal is received, the next operation is performed. First, the upper recording paper storage section 2,
Each recording paper drive member 1 in the recording paper transport section 4 and recording section 5
1, 12, 14, 16, 15, 17, 20, and 21 drive the recording paper, and recording is performed on the portion of the recording paper pressed by the recording needle 18 by the press plate 19 in accordance with the transmitted signal. Since the leading edge of the recording paper starts from the positions of the cutting members 22 and 23 and recording starts from the position of the recording needle 18, there is a non-recorded portion corresponding to the distance between the positions of the cutting members 22 and 23 and the recording needle 18. Therefore, when the recording paper is conveyed for a certain period of time, the movable blade 23 is actuated by a signal issued from the control circuit 7 to cut and separate the recorded portion and the non-recorded portion. On the other hand, in the temporary feeding section 6, the ejection pulleys 25 and 2
A delivery belt 26 is suspended between 5a, and a temporary delivery belt 27
A delivery belt 28 is suspended between and 27a. The upper part of the delivery belt 26 and the lower part of the delivery belt 28 are in contact with each other, so that the recording paper can be pinched and conveyed. Therefore, the leading edge of the separated non-recorded portion in the feeding direction is held between the discharge booleys 25 and 27, and the scarlet conveying belts 26 and 2
8, passes between the discharging pulleys 25a and 27a, changes its traveling direction by the separating plate 29, and is held between the upper side of the pseudo-feeding belt 28 and the three pulleys in contact with it.

Then, the sheet is held between the upper side of the temporary conveyance belt 28 and the lower side of the discharge belt 32 which is suspended between the discharge pulleys 31 and 31a, and is thrown into the selvedge paper storage box 33. On the other hand, after the recorded portion where the transmission signal is recorded is cut off by the cutting members 22 and 23, the recorded portion is cut between the temporary feed pulleys 25 and 27, between the temporary feed belts 26 and 28, and between the discharge pulleys 25a and 27a. After being conveyed with ease during this time, the paper passes through the inner surface of the guide plate 34, is held between the discharge rollers 35 and 36, and is discharged onto the tray 37. Next, FIG. 2 shows an upper recording paper storage section 2 having recording paper 9 in FIG.
3 shows a side view of the upper recording paper storage section 2. FIG.

Loading of the recording paper and automatic paper feeding will be explained with reference to FIGS. 2 and 3.

The rail frame 38 in FIG. 2 is slidable on the roller 39 in FIG. 3 in the direction of arrow 40.

An outer frame 41 that supports a bearing 42 is fixed to this rail frame 38 in order to support the recording paper 9 of the upper recording paper storage section 4.
A recording paper shaft 44 that can be rotated in the direction of is iron-coupled. When lever 46 is moved in the direction of arrow 43 against spring 45,
The recording paper ball 44 engaged with the lever 46 moves in the direction of the arrow 43, and the core holder 47, which is rotatably attached to the recording paper shaft 44, comes off the core of the recording paper 9. Paper 9 can be exchanged. Here, at the end of the recording paper 9 there is a winding core bearing (not shown) and a bearing that supports it, at the end of the outer frame 41 constituting the upper recording paper storage section 4, and at the outer frame 41.
It has a rail frame fixed to the other end and rollers for sliding the rail frame. Therefore, when loading the recording paper, (1) pull out the rail frame 38 in the direction of arrow 40; (2) After moving the lever 46 in the direction of the arrow 43, hold the right end of the recording paper 9 in the core holder (not shown) at the other end;
Thereafter, the lever 46 is moved in the direction opposite to the arrow 43 to hold both ends of the paper 9. (2) Move the rail frame 38 in the direction opposite to the arrow 40. The leading end ga of the recording paper 9 loaded in the above method is held between a grip roller 11 whose rotation is transmitted by a belt 49 suspended between pulleys 48 and 48a, and a feed roller 12, as shown in FIG. However, since the grip roller 11 is configured to be rotatable in the direction of the arrow 50 around the rotation axis of the pulley 48, the leading edge 48 of the recording paper 9 can move the grip roller 11 in the direction of the arrow 50. It can be easily held between the two. Further, the recording paper remaining amount detection lever 51 has one end rotatably supported on the side surface of the rail frame 38, and the other end has a detection member 53 equipped with a light emitting and light receiving element.
The detection member 53 is urged by a spring member (not shown) so as to be in constant contact with the recording paper 9. As a result of conveyance of the recording paper 9, when the outer diameter of the recording paper 9 changes from the solid line 54 to 54a shown by the dashed-dotted line, the remaining recording paper amount detection lever 51 reaches the position 51a shown by the dashed-dotted line. Near the inner end of the roll of recording paper 9, a portion is provided where the reflectance or transmittance of light changes due to pasting of a mark label, application of ink, notch, etc., and the detection member 5
3 to detect a state in which the remaining amount of recording paper is small. As a result of the detection, the rotation direction of the grip roller 11 is reversed, and the grip roller 11 pulls the recording paper back in a direction opposite to the conveyance direction. Along with this, the leading edge 9a of the recording paper 9
passes the detector 55, the detector 55 detects the absence of the recording paper 9 and stops the rotation of the grip roller 11.
The recording paper 10 in the lower recording paper storage section 3 in FIG. 1 passes through the guide plate 13a of the recording paper conveyance section 4, is held between the feed drum 14 and the feed belt 16, and is conveyed to the recording section 5. The above description has been made regarding the case where the recording paper 9 in the upper recording paper storage section 2 has been completed, but the recording paper 1 in the lower recording paper storage section 3 has been
0 is completed, the conveyance is similarly taken over by the recording paper 9 in the upper recording paper storage section 2, and the recording papers 9 and 10 are automatically conveyed alternately. Next, FIG. 4 is a perspective view showing a part of the recording paper transport section 4 and most of the recording section 5 in FIG. The pressure force control for the capstan 20 of 21 will be explained.

The leading edge 9a of the recording paper 9 conveyed by the feed drum 14, the feed belt 16, and the pulleys 15 and 17 passes between the recording needle 18 and the push plate 19, and then reaches the capstan 20.
The fixed blade 22 of the cutting member is held between the pinch roller 21 and the pinch roller 21.
and the movable blade 23. The movable blade 23 of the cutting member includes:
A total of two paper detectors 24, 24a are disposed at a portion approximately 5 cm inside from both ends of the recording paper width in the direction of the blade to check the shape of the leading edge of the recording paper 9 (as explained in FIG. 5). do.
) The leading edge 9a of the recording paper 9 stops at the paper detectors 24, 24a. This is the state in which the recording paper has been loaded and is waiting for reception, but when a recording signal is received, the push plate 19 presses the recording paper 9 against the recording stylus 18 in response to a signal from the control circuit 7.
Almost simultaneously, the pinch roller 21 presses the recording paper 9 against the capstan 20 which is being rotated by the step motor 59, so that the recording paper 9 starts to be conveyed. On the other hand, since the recording signal is applied from the recording circuit 8 to the recording paper 9 through the recording needle 18, the recording signal is recorded on the recording paper 9. Here, the tip of the recording stylus 18 has a flat tip due to manufacturing irregularities, wear, etc., both at the microscopic tip of each recording stylus and at the macroscopic tip of a large number of aligned recording stylus. Moreover, the surface of the recording paper itself is often not flat. If a hard press plate is used to press the recording paper 9 against the misaligned recording needles 18, good recording will not be obtained. Therefore, in the present invention, a push plate 18 having high electrical insulation and elasticity is used so that the recording portion of the recording paper 9 follows the tips of the recording needles 18 which are misaligned as described above. FIG. 4 shows a resilient press plate 19 fixed to the cam plate 56, and a cam roller 57 is engaged with the cam portion 56a, and a puller 57a connected to the cam roller 57 is shown in FIG. When the press plate 19 fixed to the cam plate 56 moves the recording paper 9 to the recording needle 1
8, and a contact pressure of approximately 3 grams is applied. On the other hand, the recording paper 9 is advanced by the step motor 59 at a rate of 0.2 times per step, or the pinch roller 21 which is in pressure contact with the capstan 20 is pressed against the recording needle 18 by the push plate 19. The capstan 20
'The contact pressure against this must be increased during recording. The present invention provides a cam roller 63 in contact with the cam 62, a roller 63a in contact with the support frame 60,
63b, a roller bearing 64 is constructed. When the lever 64a provided at one end of the roller bearing 64 is moved in the direction of arrow 58, the cam roller 63 moves via the cam 62 in a direction that increases the biasing force of the leaf spring 61. The increased force of the leaf spring 61 is applied to the cam 62, the cam roller 63, and the roller bearing 6.
4. It acts on the pinch roller 21 via the rollers 63a, 63b and the support frame 60, and the capstan 2 of the pinch roller 21
This increases the compressive force against the river. The pull rod 64a is connected to a pull rod 57a for controlling the pressing force of the press plate 19, and increases the pressing force of the pinch roller 21 and the press plate 1.
The increase in pressure force in step 9 is performed approximately at the same time. Next, the fixed blade 22 and the movable blade 23 of the cutting member are arranged close to each other, almost directly above the pinch roller 21 and the capstan 20.

When not cutting, there is a gap of about 7 to 8 sides between the blade edges of the fixed blade 22 and the movable blade 23, and the recording paper 9 can pass through the gap. Both ends of the fixed blade 22 and the movable blade 23 are rotatably fixed by a pair of mutually parallel links, and the fixed blade 22 and the movable blade 23 form two opposing sides of a parallelogram. An electromagnetic plunger 66 connected by a link 65 is disposed at one end of the movable blade 23, and the recording paper 9 is moved to the fixed blade 22 by the operation of the electromagnetic plunger 66.
and the movable blade 23 and are cut. Figure 5 B1,
B2 shows the first stop position when the recording paper 9 is loaded. Since the recording paper 9 is wound into a roll, curls remain at the leading edge of the recording paper.
Since the leading edge of the recording paper with the curl remaining is inserted into a narrow gap between the recording needle 18 and the push plate 19 in the recording section 5, or between the capstan 20 and the pinch roller 21, the shape of the leading edge of the recording paper is Figure 5 AI, A than flat
If it is slanted as in 2, problems such as catching or jamming are less likely to occur. However, if one paper detector is used, recording will be started by detecting the tip of the recording paper 9, creating the possibility that recording will be performed on the notch of the recording paper 9. Therefore, two paper detectors 24, 24a are arranged on the movable blade 23,
When recording is started after the paper detectors 24 and 24a both detect the recording paper (indicated by diagonal lines) as shown in FIG. Things go away. The paper shape of the recording portion can always be kept rectangular or square. 6A to 6E are side views showing the main parts of the recording paper conveying section 5 and part of the discharging section 6 in FIG. 1, and show the cutting section 22,
The operating state of 23 will be explained. In FIG. 6A, the recording paper 9 is in contact with the recording needle 18 and passes between the capstan 20 and the pinch roller 21, and between the fixed blade 22 and the movable blade 23, but is still held between the discharge pulleys 25 and 27. This indicates that the recording signal is in a standby state.

When the recording signal is received, the recording paper 9 is moved to the capstan 20
The recording needle 18 is pinched and conveyed by the pinch roller 21, and
When recording is started, the leading edge 9a of the recording paper 9 is held between scale feed pulleys 25 and 26 as shown in B. At the start of the recording, a counter (not shown) provided inside the control circuit 2 of FIG. 1 starts counting the number of steps of the capstan 20. The recording paper 9 is conveyed by the capstan 20' in a preset number of steps, so that the distance from the recording needle 18 to the cutting surface of the cutting members 22 and 23 is conveyed by the preset number of steps. When the number reaches the number, the movable blade 23 is moved by the electromagnetic plunger 66 to cut the recording paper 9 and separate the non-recorded portion 9b as shown in C. The recording paper 9 is then conveyed, and the non-recorded portion 9b of D is sandwiched between the scarlet conveying belts 26 and 28 in the discharge section 6 in FIG. When the recording signal stops, the counter (not shown) installed inside the control circuit 7 in FIG. 1 starts counting from the time when the last recording signal is received, and the number of steps of the capstan 20 reaches the preset number of steps. When the final recorded portion of the recording paper 9 reaches the cutting surface of the cutting members 22 and 23, the movable blade 23 is moved to cut the recording paper 9 and separate the recorded portion 9c as shown in E. do. The recorded portion gc is then sandwiched between the ejection belts 26 and 28 in the temporary feeding section 6 in FIG. 1 and ejected to the trays 3 and 7. The above description of FIGS. 6A to 6E is based on the case where one sheet of paper is recorded for one reception, but when recording a large number of sheets for one reception, the cutting signal to the movable blade 23 is It can also be controlled by a received signal instead of a counter. FIG. 7 shows the cutting members 22, 23 and the first
This is a perspective view of the discharge section 6 in the figure, and the state in which the recording paper 9 is being fed will be described.

9E The cutting member 2 is held between the feed pulleys 25 and 27.
The leading edge of the recording paper (not shown) cut by 2 and 23 is transferred to the delivery belt 2 suspended from the delivery booleys 25 and 25a.
8E suspended on the upper side of 6 and the discharge pulleys 27, 27a
After being pinched and conveyed under the conveying belt 28, it is discharged from the scarlet conveying pulleys 25a and 27a.

The technical E feed pulleys 25, 25a, 27, 27a are driven by the rotational force of the ejection motor 67, but the rotational force of the temporary feed motor 67 rotates the pulley 69a (input section) of the auto slipper 69 by the belt 68. to rotate the pulley 27a connected to the drive shaft 69b via the drive shaft 69b (output shaft). Further, at least one pulley connected to the drive shaft 69b transmits rotational force to the Enoki E feed roller 35 via the belt 35a. The auto slipper 69 is provided to absorb the difference in conveyance speed of the recording paper 9 between the recording section 5 and the scarlet feeding section 6 shown in FIG.

That is, in the recording section 5, the recording paper 9 is inserted into the capstan (Fig. 4 2) connected to the step motor (Fig. 4 59).
In the discharge section 6, the recording paper 9 receives a driving force from the 9E feed motor 67 so as to be transported at a constant speed. However, it is not preferable to feed the recording paper 9, which is a single piece, at two conveyance speeds because it causes the recording paper 9 to become loose or to have a tensile force. Therefore, an auto slipper 69 having a slip mechanism is used to remove the recording paper 9.
If the leading end of the cutting member 2 is held between the recording unit 5 and the discharging unit 6 at the same time, the cutting member 2
If the chicks are held only by the temporary feeding section 6 as a result of being cut by the chicks 2 and 23, they are quickly discharged at the original feeding speed of the feeding section. FIG. 8 is a sectional view showing the internal structure of the auto slipper 69.

The rotational force transmitted from the discharge motor 67 in FIG. 7 via the belt 68 drives the pulley 69a (input section) in FIG. 8. The pulley 69a is rotatably attached to the drive shaft 69b, one side of the pulley 69a is in contact with the end of the drive shaft 69b, and the other side is in contact with a fixing member 70 fixed to the drive shaft 69b with a key. A friction material 71 and a washer 72 are sandwiched between them. The washer 72 is pressed by a spring 73 and presses the friction material 71 against the pulley 69a. As described above, the discharging mechanism of the discharging section 6 has a slip mechanism for following the recording speed of the recording section 5, and furthermore, the chick feeding speed of the discharging section 6 is adjusted to match the recording speed of the recording section 5.
is set farther than the maximum discharge speed.

In other words, if the recording paper 9 is conveyed simultaneously by the recording section 5 and the discharging section 6, the pulley 69 in FIG.
Since the load on the drive shaft 69b is greater than the frictional force between the pulley 69a and the friction member 701, the frictional force 71 between the pulley 69a and the fixed member 701 increases. It slips through the washer 72, and the discharge speed of the pulley 27a decreases to the conveyance speed of the recording unit 5.
Therefore, the discharge speed of the discharge section 6 follows the conveyance speed of the recording section 5. In addition, the leading edge of the recording paper 9 is located at the cutting part 22,
When only the leading edge of the cut recording paper cut by 23 is delivered by the delivery unit 6, the drive shaft 6 is
Since the load on the drive shaft 9b is reduced, the pulley 69a and the fixed part village 70 together with the friction material 71 and the washer 72 rotate the drive shaft 69b. Therefore, the leading edge of the cut recording paper is quickly aE at the discharge speed of the discharge section 6.
sent. Next, FIG. 9 shows the operating state of the separation plate 29. In the discharge section 6 of FIG.
The recording paper sandwiched between 5a and 27a is separated by a separation plate 29, but the unrecorded portion is bent in the direction of arrow 75a by the separation plate 29, and is placed between the ejection loft 30 and the ejection belt 28. The recorded portion is then held in the direction of the guide plate 34 along the arrow 76a.

Therefore, the non-recorded portion and the recorded portion are separated. The separation plate 29 in FIG. 9 is rotatable in the direction of an arrow 75A or 76B with a plunger (not shown) about a rotation shaft 74, and A indicates a non-recorded portion between the chick feed pulley 30 and the delivery belt 28. B holds the recording part between the guide plates 3 and 3.
This shows a state in which the image is sent in direction 4.

In the recording paper section 5 in FIG.
, 23, but whether the leading end of the cut recording paper 9 is a non-recorded part or a recorded part is determined by the movable blade 2 as described in the explanation of FIG.
They can be distinguished by 3 actuation signals. In other words, the non-recording part is operated by the timer signal of the control circuit activated by the transmission start signal, and the recording part is activated by the timer signal of the control circuit activated by the transmission end signal or the transmission signal, and the movable blade 23 is operated by the recording paper. Therefore, the timer signal of the control circuit activated by the transmission start signal sets the separating plate 29 in the state shown in FIG.
8, and the recording portion can be sent in the direction of the guide plate 34 by setting the separation plate 29 in the state shown in FIG. . In this way, the recording paper sandwiched and conveyed by the 8E conveying belt 26 and the discharge belt 28 is BE conveyed in a predetermined direction by the separation plate 29.

[Brief explanation of the drawing]

FIG. 1 is a side view showing the inside of a facsimile receiver according to the present invention, and FIG. 2 is a side view showing the inside of a facsimile receiver according to the present invention, and FIG.
3 is a perspective view showing the inside of the recording paper transport section 4.
FIG. 4 is an enlarged side view showing the recording paper storage section 2 in detail, and FIG. 4 shows the entire recording section 5 and the recording paper transport section 4 in FIG.
FIG. 5 is a perspective view showing a portion of paper detectors 24, 2 disposed on the movable blade 23 of the recording paper cutting member in FIG.
4a and the recording paper leading edge 9a, FIG. 6 is a side view showing the operating state of the recording paper cutting members 22 and 23 in FIG. 4, and FIG. Part 6
8 is a sectional view showing the internal structure of the auto slipper 69 in FIG. 7, and FIG. 9 is a perspective view showing the interior of the auto slipper 69 in FIG. FIG. 6 is a side view showing the operating state of the separation plate 29 arranged in the second embodiment. In addition, the relationship between the name of each member and the number described in the drawing is as follows. 1... Airframe, 2... Upper recording paper storage section, 3... Lower recording paper storage section, 4...
...Recording paper transport section, 5...Recording section, 6...
. . . Simulated sending section, 7 . . . Control circuit, 8 . . .
・Recording circuit, 9...Recording paper (upper part), 9a...
...Top of the recording paper, 9b...No recording part, 9c.
... Recording part, IQ ... Recording paper (lower part)
, /18...Recording needle, 19...Recording paper press plate, 20...Capstan, 21...Pinch low-fu, 22...Fixed blade, 23... ...Moving blade, 24, 24a... Paper detector, 29...
... Separation plate, 33 ... Ear paper storage box, 37 ...
...Tray, 53...Detection department, 66...
...Electromagnetic plunger, 67...Discharge motor, 69
...Auto slippers. Third Tsutomu? Figure 2 Figure 4 Grandchild Figure Thorn a Figure 5 Figure 6 Grandchild wa diagram Younger brother q diagram

Claims (1)

[Claims] 1. A first conveying means for moving the recording paper in order to perform recording on the recording paper in the recording section; A second conveyance means capable of conveying the recording paper at a speed faster than the conveyance speed of the conveyance means; A recording paper conveyance device comprising: a slip means for slipping a part of a drive transmission system for transmitting drive from a drive source to a second conveyance means so as to follow the conveyance speed of one conveyance means.