JP2003128275A - Recorder - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an easily replaceable half-moon roller. SOLUTION: An opening of left and right fitting parts 213 and 214 of the half-moon roller 74 has a pair of taper-shaped protruding parts 216 and 217. When fitting to a rotating shaft 75 against the protruding parts 216 and 217 of the left and right fitting parts 213 and 214, the left and right fitting parts 213 and 214 are easily deformed to fit to the rotating shaft 75 by a pair of slits 211 and 212. After the pair of the protruding parts 216 and 217 is fitted to the rotating shaft 75, the pair of the protruding parts 216 and 217 act as stoppers. As a result, the half-moon roller 74 can be removed from the rotating shaft 75 by rotating the half-moon roller 74 to the position where the half-moon roller 74 can be removed from the rotating shaft 75 and inserting a hand from a recording paper cassette according to an operation of a start key.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a half-moon roller that feeds recording paper contained in a recording paper cassette one by one.

[0002]

2. Description of the Related Art Recently, in a recording apparatus, a method of recording an image on a recording sheet by using an electrophotographic method is widely used. This electrophotographic recording apparatus generally includes a charger that uniformly charges the surface of the photoconductor, an exposure device that irradiates the surface of the photoconductor with light to form an electrostatic latent image, and a toner on the electrostatic latent image. The developing device includes a developing device that adheres toner supplied from the case to form a toner image, a transfer device that transfers the toner image onto recording paper, and a heat fixing device that fixes the transferred toner image onto the recording paper.

A recording paper cassette that accommodates recording papers of a predetermined size in a stacked state is provided below the recording device. Then, when the half-moon roller for supplying the recording paper is rotationally driven based on the start of the recording operation, the half-moon roller sends out the stacked recording papers housed in the recording paper cassette one by one toward the transfer device. .

That is, the half-moon roller is covered with a rubber for picking up the recording papers one by one from the recording papers in a laminated state, and the uppermost recording is caused by the friction when the rubber comes into contact with the recording papers. Only the paper is picked up and sent to the transfer device. Thus, when the recording paper is picked up, the rubber and the recording paper come into contact with each other, so that the rubber covered by the half-moon roller is gradually deteriorated due to friction with the recording paper, secular change, and the like. As a result, it is necessary to replace the half-moon roller and the half-moon roller at regular intervals depending on the frequency of use of the recording apparatus.

[0005]

However, when replacing the half-moon roller or the rubber of the half-moon roller, the rotary shaft for rotating the half-moon roller must first be removed from the recording device. Then, after removing the half-moon roller from the rotary shaft and attaching a new half-moon roller to the rotary shaft, the rotary shaft having the new half-moon roller had to be attached to the recording apparatus. Therefore, it was not easy to replace the half-moon roller.

The present invention has been made in view of these problems, and an object thereof is to provide a half-moon roller that can be easily replaced.

[0007]

In order to achieve the above object, in the invention according to claim 1, a half-moon roller for feeding the recording papers contained in a recording paper cassette one by one is rotationally driven by a motor. The attaching / detaching means attachable / detachable to / from the rotating shaft for transmitting force is provided.

According to a second aspect of the invention, in the meniscus roller according to the first aspect, there is provided a positioning means that is inserted into a through hole provided through the rotary shaft to determine a mounting position with respect to the rotary shaft.

According to the invention described in claim 3, in the meniscus roller described in claim 2, the positioning means has a function of preventing rotation with respect to the rotary shaft together with the through hole of the rotary shaft.

(Operation) According to the invention described in claim 1,
Since the half-moon roller is detachably attached to the rotary shaft, the half-moon roller can be removed from the rotary shaft and replaced with a new half-moon roller.

According to the second aspect of the invention, when the positioning means is inserted into the through hole provided through the rotary shaft, the mounting position of the meniscus roller with respect to the rotary shaft is determined. According to the third aspect of the invention, the positioning means and the through hole of the rotary shaft prevent the meniscus roller from rotating with respect to the rotary shaft.

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment in which a half-moon roller according to the present invention is embodied in a facsimile machine having a copying function as a recording device (hereinafter referred to as a facsimile machine) will be described with reference to the drawings.

As shown in FIG. 1, the facsimile machine 1
Is MPU 11, ROM 12, RAM 13, reading unit 1
4, a recording unit 15, an operation unit 16, a display unit 17, an image memory 18, a codec 19, a modem 20 and an NCU 21, and each unit 11 to 21 is connected via a bus 22.

The MPU 11 controls each part of the facsimile machine 1. The ROM 12 stores a program for controlling the facsimile device 1. RAM13
Temporarily stores various information about the facsimile apparatus 1.

The reading unit 14 reads image data on a document and outputs black and white binary image data. The recording unit 15 includes an electrophotographic printer, and records the received image data or the image data of the document read by the reading unit 14 on the recording paper 71 in the recording operation or the copying operation of the received image data. . The details of the recording unit 15 will be described later.

The operation unit 16 includes a start key 16a for starting a document reading operation and the like, a stop key 16b for stopping the operation of the facsimile apparatus 1 and ten keys (*, #) for inputting a telephone number and the like. (Including keys), abbreviated number registration, abbreviated keys for sending from abbreviated numbers, various operation keys such as communication / copy keys for setting "communication (FAX)" operation or "copy" operation. There is. The display unit 17 formed of an LCD or the like displays various kinds of information indicating the operating state of the facsimile apparatus 1. The display unit 17 also includes a speaker 17a that emits a predetermined buzzer sound.

The image memory 18 temporarily stores the received image data, the image data read by the reading unit 14, binarized, and compressed and encoded by the codec 19. The codec 19 encodes the image data read by the reading unit 14 according to the MH, MR, MMR, JBIG method or the like for transmission. The codec 19 also decodes the received image data.

The modem 20 uses the ITU-T recommendation T.264. 30 based on the facsimile transmission control procedure according to V.30. 1
7, V.I. 27 ter, V.I. The transmission / reception data is modulated and demodulated according to any one of 29 or the like. The NCU 21 has a function of controlling the connection with the telephone line L and detecting the sending and receiving of a dial signal corresponding to the telephone number of the other party.

Next, the specific configuration of the recording unit 15 will be described in detail according to the recording process. As shown in FIG. 1, a photosensitive drum 30 as a photosensitive member is rotatably supported by a shaft, and a photoconductive film 31 is formed on the outer peripheral surface thereof.

The charger 40 is composed of a brush roller in which a conductive brush body is embedded, and the photoconductive film 3 of the photosensitive drum 30.
1 is uniformly charged to a predetermined potential. The exposure device 50 is an LED
An electrostatic latent image is formed by irradiating the photoconductive film 31 of the photoconductor drum 30 with light on the basis of the data that is composed of the array 51 and is binarized by the codec 19.

The developing unit 60 includes a toner case 61 that contains toner, a supply roller 62 that is disposed in the lower part of the toner case 61 and to which a predetermined voltage is applied, the supply roller 62, and the photosensitive drum 30. And a developing roller 63 to which a predetermined voltage is applied and which is disposed in the lower end opening of the toner case 61 so as to be located between the two. The toner conveyed from the toner case 61 by the supply roller 62 and the developing roller 63 and to which a predetermined potential is applied, has the applied potential and the potential of the electrostatic latent image formed on the photosensitive drum 30. The electrostatic latent image is selectively adhered to the electrostatic latent image due to the difference of. A toner image is formed on the photoconductor drum 30 by the toner attached to the electrostatic latent image. A stirring body 64 is rotatably supported in the toner case 61. By the rotation of the stirring member 64, the toner in the toner case 61 is constantly stirred, and the toner is kept at a uniform density.

The recording paper cassette 70 accommodates recording papers 71 of a predetermined size in a stacked state. Solenoid 72
Disconnects the rotational driving force of the motor 73 from the half-moon roller 74. The half-moon roller 74 is assembled to the rotary shaft 75 and is the uppermost recording paper 71 contained in the recording paper cassette 70.
Send out one by one. Then, the recording paper 71 sent out
Are transferred toward the photoconductor drum 30. The first recording paper sensor 81 detects the recording paper 71 that has been transported to a predetermined position immediately before the developing device unit 60. The alternate long and short dash line P indicates the transfer path of the recording paper 71.

Assuming that a jam of the recording paper 71 may occur at the side of the recording paper cassette 70 and the half-moon roller 74 at the time of picking up by the half-moon roller 74, a side cover for releasing the jam. 15a is provided.

The transfer device 90 is disposed below the photosensitive drum 30 and is controlled to a predetermined potential. And the transfer device 90
Transfers the toner image on the photosensitive drum 30 onto the recording paper 71 based on the difference between the predetermined potential and the potential of the toner image.

The memory removing brush 91 is made of a conductive brush, and scatters the toner remaining on the photoconductor drum 30 after transfer to uniformly disperse the toner on the photoconductor drum 30. The heat fixing device 100 is disposed on the recording paper feeding side of the photoconductor drum 30, and the recording paper 71 is fed between the heating roller 101 and the pressure roller 102 of the heat fixing device 100. The toner image on 71 is heated and fixed.

In the present embodiment, the series of processes of charging, exposing, developing on the photosensitive drum 30, transferring to the recording paper 71, and heat fixing described above is one unit of recording process. .

The second recording paper sensor 82 is the heat fixing device 10.
It is arranged on the recording paper feed-out side of 0 and detects that the recording paper 71 has passed through the heat fixing device 100. MPU11 is
After the recording paper 71 is detected by the first recording paper sensor 81,
If the recording paper 71 is not detected by the second recording paper sensor 82 within a predetermined time, it is determined that a jam has occurred in the recording process.

The control unit 110 controls the operation of the recording unit 15 based on the control signal from the MPU 11. That is, the solenoid 72 includes the motor 73 from the control unit 110.
And a control signal for disconnecting the half-moon roller 74 from each other. On the other hand, a detection signal indicating the arrival of the recording paper 71 is sent from the first and second recording paper sensors 81 and 82 to the control unit 110.

Next, the recording paper cassette 70 and the half-moon roller 7
4 will be described with reference to FIG. As shown in FIG. 2, a rotary shaft 75 is provided on the recording paper cassette 70.
Is provided. Both ends of the rotating shaft 75 are supported by bearings 76 fixed to a casing (not shown). A pair of half-moon rollers 74 and a vibration preventing member 77 are arranged on the rotating shaft 75. That is, the pair of half-moon rollers 74
Is attached to the rotary shaft 75. The half-moon roller 74 is positioned upward (standby position) when the recording unit 15 is not operating. On the other hand, operation from the operation unit 16 (for example, copy operation by operation of the start key 16a)
When the recording unit 15 operates based on the above, the motor 73 is driven and the half-moon roller 74 rotates in the arrow direction shown in FIG. As a result, the uppermost recording paper 71 contained in the recording paper cassette 70 is fed out one by one.

The antivibration member 77 is located substantially in the center of the rotary shaft 75 and is fixed to a housing (not shown). That is, the vibration prevention member 77 has a bearing function for the rotating shaft 75, and prevents vibration accompanying the rotation of the rotating shaft 75. A rotating mechanism R for rotating the meniscus roller 74 is disposed on one end side of the rotating shaft 75.

Next, the rotation mechanism R of the half-moon roller 74 will be described with reference to FIG. As shown in FIG. 3, a drive gear 78 is fixed to the rotary shaft 73a of the motor 73. On the other hand, the rotating shaft 75 to which the half moon roller 74 is attached
A driven gear 79 is fixed to the. This driven gear 7
A part of 9 has no teeth. That is, the driven gear 79 has a toothless portion 79 a that does not mesh with the drive gear 78.
Are formed. Further, the driven gear 79 is formed with a substantially disk-shaped projecting portion 79b, and the projecting portion 79b is formed with an engaging recess 79c. The movable piece 72a of the solenoid 72 is engaged with the engaging recess 79c. That is, the movable piece 72a is always engaged with the engaging recess 79c by the biasing force of the spring 72b. And MPU
Based on a control signal from 11 through the control unit 110, the engagement between the movable piece 72a and the engagement recess 79c is released. Further, the driven gear 79 is formed with a locking projection 79d, and one end of the spring 80 is locked to the locking projection 79d. On the other hand, the other end of the spring 80 is locked to a part of a casing (not shown). That is, the driven gear 7
The locking projection 79d of 9 is always urged toward the motor 73 by the urging force of the spring 80.

In the rotation mechanism R of the half-moon roller 74 thus configured, the movable piece 72a and the engaging recess 79c are generated based on the control signal from the MPU 11 via the control unit 110.
When the engagement with is released, the driving gear 78 and the driven gear 79 mesh with each other by the biasing force of the spring 80. When the drive gear 78 is rotated by the rotational drive force of the motor 73, the driven gear 79 is rotated while resisting the biasing force of the spring 80. As a result, the half-moon roller 74 rotates, and the uppermost recording paper 71 contained in the recording paper cassette 70 is sent out one by one. And the motor 73
When the drive gear 78 is further rotated by the rotational drive force of the driven gear 79, the driven gear 79 resists the biasing force of the spring 80.
Rotates. As a result, the movable piece 72a and the engagement recess 79c eventually engage with each other to reach the standby position, and the rotation of the half-moon roller 74 is stopped.

Next, the structure of the rotary shaft 75 will be described with reference to FIG. As shown in FIG. 4, the rotary shaft 75 has
A plurality of through holes 75a are provided at predetermined intervals. That is, the rotary shaft 75 has a plurality of through holes 75 a so that the position of the half-moon roller 74 can be changed according to the recording paper 71 accommodated in the recording paper cassette 70. Specifically, a pair of through holes 75a corresponding to the recording paper 71 of "A4", "B4", and "A3" are provided through. Then, on the end faces of these through holes 75a, an inclined surface 75b toward the center of the through holes 75a is formed.

Next, the structure of the half-moon roller 74 will be described with reference to FIGS. As shown in FIG. 5, the half-moon roller 74 is composed of a core portion 200 made of synthetic resin and a rubber body 300 made of rubber.

First, the structure of the core portion 200 is shown in FIG.
And FIG. 7 will be described. As shown in FIG. 6, the core portion 200 extends in the axial direction of the rotary shaft 75 and is provided with the rotary shaft 7
An inverted U-shaped fitting portion 210 that fits with 5 is formed. The upper surface of the fitting portion 210 has a substantially fan-shaped wall surface 22.
0 is formed. On the other hand, as shown in FIG.
A positioning pin 230 to be inserted into the through hole 75 a of the rotary shaft 75 is formed on the lower portion of the fitting portion 210. The positioning pin 230 is tapered on the distal end side rather than on the proximal end side.
Can be easily inserted into the through hole 75a. Further, the positioning pin 230, together with the through hole 75 a of the rotary shaft 75, prevents the meniscus roller 74 from rotating with respect to the rotary shaft 75.

As shown in FIGS. 7B and 7C, the fitting portion 210 is formed with a pair of slits 211 and 212, and the left and right fitting portions 213 and 214 and the central fitting portion 215 are connected to each other. It is configured. On the other hand, a rubber body accommodating portion 240 extending from the substantially fan-shaped wall surface 220 in the axial direction of the rotating shaft 75 (rightward in FIG. 7B) is formed. That is, arc-shaped wall surfaces 250 are formed at predetermined intervals at positions facing the ends of the substantially fan-shaped wall surface 220, and the pair of wall surfaces 2
A rubber body accommodating portion 240 is formed between 20 and 250. As a result, as shown in FIG.
A space 260 is formed between the rubber body housing portion 240 and the rubber body housing portion 240.

As shown in FIG. 7D, the rubber body accommodating portion 2
A pair of recesses 241 and 242 are formed at the left and right ends of 40. From the pair of concave portions 241 and 242 to the fitting portion 2
A pair of extending portions 271 and 272 extending toward 10 are formed. Then, the extension portions 271, 272 and the fitting portion 2
A pair of slits 281 and 282 are formed between the slits 10 and 10. That is, the slits 281, 282 are formed to attach the rubber body 300 to the core portion 200.

As shown in FIGS. 7D and 7E, a pair of tapered protrusions 216 and 217 are formed in the openings of the left and right fitting portions 213 and 214. That is, the distance between the pair of convex portions 216 and 217 is formed to be slightly smaller than the diameter of the rotating shaft 75. On the other hand, the protrusions (216, 217) for preventing coming off are not formed in the opening of the central fitting portion 215. Therefore, when fitting to the rotary shaft 75 while resisting the convex portions 216 and 217 of the left and right fitting portions 213 and 214, the left and right fitting portions 213 and 21 are formed by the pair of slits 211 and 212.
4 is easily bent and fitted to the rotary shaft 75. Then, after the pair of convex portions 216 and 217 are fitted to the rotary shaft 75,
The pair of convex portions 216 and 217 play a role of retaining. That is, the pair of convex portions 216 and 217 prevent the half-moon roller 74 from coming off.

Next, the structure of the rubber body 300 is shown in FIG.
Will be explained. As shown in FIG.
Are formed in a substantially fan-shaped annular shape similar to the core portion 200. That is, the rubber body 300 includes an inverted U-shaped inner rubber body 310, a semi-circular outer rubber body 320, and a pair of extended rubber bodies 330 connecting the inner rubber body 310 and the outer rubber body 320. ing. A plurality of grooves 340 are formed on the outer periphery of the semi-arcuate shape of the outer rubber body 320. In addition, inside the left and right ends of the outer rubber body 320,
A pair of convex portions 321 and 322 are formed. The pair of convex portions 321 and 322 are a pair of concave portions 241, which are formed at the left and right ends of the rubber body accommodating portion 240 of the core portion 200.
242 is inserted.

Next, the core portion 200 having the above structure
The operation of assembling the rubber body 300 with the rubber body 300 will be described with reference to FIG. As shown in FIG.
The inner rubber body 310 is inserted into one of the slits 281 (or 282 (not shown)) formed in the. Subsequently, while covering the extended portion 271 (or 272) with the extended rubber body 330,
One convex portion 321 formed inside the outer rubber body 320
(Or 322) is inserted into one recess 241 (or 242) formed in the rubber body accommodating portion 240, and then the outer rubber body 3
20 is gradually accommodated in the rubber body accommodating portion 240. And
While resisting the elastic deformation force of the rubber body 300, the outer rubber body 32
The other convex portion 322 (or 321) formed inside 0
The other concave portion 242 formed in the rubber body accommodating portion 240.
(Or 241). Then, the extended rubber body 330
While covering the extended portion 272 (or 271) with the core portion 2
The inner rubber body 310 is inserted into the other slit 282 (not shown) (or 281) formed in No. 00.

When the rubber body 300 is thus attached to the core portion 200, the outer rubber body 320 of the rubber body 300 is housed between the pair of wall surfaces 220 and 250, as shown in FIG. For this reason, the outer rubber body 320 has the pair of wall surfaces 220, 2
It is regulated between 50. As a result, the rubber body 300 does not fall off from the rubber body housing portion 240 of the core portion 200.
The inner rubber body 310 is housed in the space 260 formed between the fitting portion 210 and the rubber body housing portion 240. Therefore, the annular rubber body 300 does not cover the fitting portion 210. As a result, when the fitting portion 210 of the half-moon roller 74 is fitted to the rotating shaft 75, the half-moon roller 74 is rotated.
Attached to.

Next, after the half-moon roller 74 is rotated based on the operation from the start key 16a, the half-moon roller 7 is rotated.
The operation of replacing 4 will be described with reference to the flowchart shown in FIG. This control is based on the ROM
It is executed by the MPU 11 based on the program stored in 12.

Now, after the recording paper cassette 70 is pulled out from the facsimile apparatus 1, the service mode for replacing the half-moon roller 74 is set based on the operation from the operation unit 16, and in step S1, It is determined whether a key operation has been performed. Then, when the key operation is performed, the process proceeds to step S2. On the other hand, if there is no key operation, it waits until the key operation is performed. If a key operation is not performed within a predetermined time (for example, 30 seconds) after the service mode is set, the speaker 17a outputs a nuck buzzer sound as a warning sound.

In step S2, the start key 1
It is determined whether 6a has been operated. Start key 1
When 6a is operated, the process proceeds to step S3. On the other hand, if the start key 16a is not operated, the process proceeds to step S6.

In step S3, the above step S
Based on the operation of the start key 16a in 2, the engagement between the movable piece 72a and the engagement recess 79c is released. That is, based on the operation of the start key 16a, the MPU1
When the control signal is transmitted from the control unit 110 from the unit 1,
The solenoid 72 is energized. As a result, the solenoid 7
The movable piece 72a is attracted to the solenoid 72 side by the electromagnetic force of 2, and the engagement between the movable piece 72a and the engagement recess 79c is released. At this time, the drive gear 78 and the driven gear 79 mesh with each other by the biasing force of the spring 80.

In step S4, the motor 73 is driven until a predetermined time (for example, 50 [ms]) elapses. As a result, the half-moon roller 74 moves at a predetermined angle (about 10
Is rotated.

In step S5, the solenoid 72
Is turned off. As a result, the movable piece 72a is urged toward the driven gear 79 by the spring 72b, and the movable piece 72a comes into contact with the outer peripheral surface of the protruding portion 79b.

The half-moon roller 74 is gradually rotated by driving the motor 73 for a predetermined time based on the operation of the start key 16a. That is, until the half-moon roller 74 faces downward, that is, until the half-moon roller 74 is in a position where the hand can be inserted from the recording paper cassette 70 and the rotary shaft 75 can be removed.
Are rotated (S1 to S5).

At a position where the half-moon roller 74 can be removed from the rotary shaft 75, a hand is inserted from the recording paper cassette 70 to remove the half-moon roller 74 from the rotary shaft 75.
Subsequently, when a new half-moon roller 74 is attached to the rotary shaft 75, the exchange of the half-moon roller 74 is completed.

In step S2, the start key 1
When 6a is not operated, it is determined in step S6 whether or not the stop key 16b is operated. If the stop key 16b is operated, the process proceeds to step S7. On the other hand, if the stop key 16b is not operated, the process proceeds to step S8.

In step S7, the half-moon roller 74
Is returned to the standby position, and this processing ends. That is, the motor 73 is driven and returned to the standby position where the movable piece 72a and the engagement recess 79c engage with each other while resisting the biasing force of the spring 80. That is, since the replacement of the half-moon roller 74 is completed, the half-moon roller 74 is returned to the standby position in preparation for the next recording operation, that is, the pickup of the next recording sheet 71.

In step S8, the start key 1
Since it is not the operation of 6a or the stop key 16b, a nuck buzzer sound is emitted from the speaker 17a. That is, the nuck buzzer sound is emitted from the speaker 17a to notify that a key other than the start key 16a or the stop key 16b has been operated.

As described above in detail, according to this embodiment, the following actions and effects can be obtained. (1) Left and right fitting portions 213, 21 of the half-moon roller 74
4 has a pair of tapered protrusions 21 in the opening.
6, 217 are formed. That is, the pair of convex portions 2
The separation distance between 16 and 217 is formed to be slightly smaller than the diameter of the rotating shaft 75. Therefore, when the rotary shaft 75 is fitted while resisting the convex portions 216 and 217 of the left and right fitting portions 213 and 214, the pair of slits 2
The left and right fitting parts 213 and 214 are easily bent by the parts 11 and 212 and fitted to the rotary shaft 75. In other words, by the convex portions 216 and 217 of the left and right fitting portions 213 and 214,
The half-moon roller 74 has a so-called snap fit shape. Then, after the pair of convex portions 216 and 217 are fitted to the rotary shaft 75, the pair of convex portions 216 and 217 play a role of retaining. As a result, based on the operation of the start key 16a, the half-moon roller 74 is rotated until the half-moon roller 74 can be removed from the rotary shaft 75, and then the hand is inserted from the recording paper cassette 70 to remove the half-moon roller 74 from the rotary shaft 75. The half-moon roller 74 can be removed.
Moreover, a tool or the like for replacing the half-moon roller 74 is unnecessary. Therefore, the half-moon roller 74 can be easily replaced.

(2) The rotating shaft 75 has a plurality of through holes 75a formed at predetermined intervals. That is, according to the recording paper 71 stored in the recording paper cassette 70, the half-moon roller 7
The rotating shaft 75 is formed with a plurality of through holes 75a so that the position of No. 4 can be changed. On the other hand, in the lower part of the fitting portion 210 in the core portion 200 of the half-moon roller 74, the rotating shaft 7
5, a positioning pin 230 to be inserted into the through hole 75a is formed. Therefore, the position of the meniscus roller 74 is determined by the through hole 75a of the rotary shaft 75 and the positioning pin 230. Therefore, the position of the half-moon roller 74 can be changed according to the recording paper 71 accommodated in the recording paper cassette 70.

(3) Moreover, the positioning pin 230 and the through hole 75a of the rotary shaft 75 prevent the half-moon roller 74 from rotating with respect to the rotary shaft 75. Therefore, even if the rotating shaft 75 rotates, the half-moon roller 74 does not rotate with respect to the rotating shaft 75. Therefore, the half-moon roller 74 can reliably send out the uppermost recording paper 71 contained in the recording paper cassette 70 one by one.

(4) Further, the through hole 75 in the rotary shaft 75.
An inclined surface 75b for guiding the positioning pin 230 to the through hole 75a is formed on the end surface of a. For this reason,
When the tip of the positioning pin 230 comes into contact with the inclined surface 75b when the half-moon roller 74 is attached to the rotary shaft 75,
The positioning pin 230 is guided to the through hole 75a. Therefore,
The half-moon roller 74 can be easily attached to the through hole 75a.

(5) The half-moon roller 74 is composed of a core portion 200 made of synthetic resin and a rubber body 300 made of rubber. The rubber body 300 has the core portion 200.
It is configured to be attachable to and detachable from. Therefore, the half-moon roller 74 can be removed from the rotary shaft 75 and only the rubber body 300 can be replaced. Therefore, the facsimile machine 1
The maintenance cost can also be reduced.

(6) A pair of recesses 241 and 242 are formed at the left and right ends of the rubber body accommodating portion 240 in the core portion 200. On the other hand, a pair of convex portions 321 and 322 are formed inside the left and right ends of the outer rubber body 320.
Then, when the rubber body 300 is attached to the (5) core portion 200, the pair of convex portions 321 and 322 form the pair of concave portions 241 and 242 formed at the left and right ends of the rubber body housing portion 240.
Inserted in. Therefore, as the rotary shaft 75 rotates,
Even if the half-moon roller 74 rotates, the rubber body 300 does not rotate in the rubber body housing portion 240. As a result, the outer circumference of the outer rubber body 320 in which the plurality of grooves 340 are formed contacts the recording paper 71 contained in the recording paper cassette 70. Therefore, the uppermost recording paper 71 can be reliably picked up one by one.

The embodiment can be modified and embodied as follows. In the embodiment, the recording paper cassette 70 is rotated to a position facing the recording paper cassette 70, the hand is inserted from the recording paper cassette 70, and the half-moon roller 74 is removed from the rotation shaft 75. However, instead of this, Side cover 1 with half-moon roller 74
The half-moon roller 74 may be replaced by rotating the half-moon roller 74 to a position facing the 5a.

In the above embodiment, the recording paper cassette 70
Depending on the recording paper 71 accommodated in the
Although the position where 4 is attached to the rotary shaft 75 is changed, instead of this, the recording paper 71 is picked up by using the auxiliary half-moon roller 74a in which the width of the rubber body accommodating portion 240 of the half-moon roller 74 is reduced. You can
Specifically, the half-moon roller 74 is attached to the position for "A4" of the rotary shaft 75, and the auxiliary half-moon roller 74a is attached to the rotary shaft 75.
"A4" to "A3" by attaching to the position for "B4"
Even if any of the above-mentioned recording papers 71 is accommodated in the recording paper cassette 70, the uppermost recording paper 71 may be surely picked up one by one. Here, in this way, the half-moon roller 74 and the auxiliary half-moon roller 74a
In the configuration in which and are attached to the rotating shaft 75, the width of the rubber body accommodating portion 240 of the auxiliary meniscus roller 74a is equal to that of the rubber body 300.
From the relationship of friction between the recording paper 71 and the recording paper 71, the width of the half-moon roller 74 is about 2 with respect to the width of the rubber body housing portion 240.
Most preferably, the width is about 30% to 30%.

Further, the technical idea grasped from the above embodiment will be described below together with their effects. [1] In the meniscus roller according to any one of claims 1 to 3, a substantially fan-shaped wall surface, an arc-shaped wall surface facing the wall surface, and a rubber body formed between both wall surfaces. A half-moon roller provided with an accommodating portion and a rubber body which is detachably attached to the rubber accommodating portion. According to this structure, the rubber body is reliably housed in the rubber body housing portion formed by the substantially fan-shaped wall surface and the arc-shaped wall surface, so that the rubber body does not drop from the rubber body housing portion. . Therefore, the recording papers stored in the recording paper cassette can be sent out one by one by the half-moon roller.

[2] In the meniscus roller described in [1] above, a pair of concave portions formed at the left and right ends of the rubber body accommodating portion, and a rubber body having a pair of convex portions to be inserted into the pair of concave portions. Half moon roller with. According to this structure, since the pair of convex portions of the rubber body are inserted into the pair of concave portions of the rubber body accommodating portion, the rubber body does not rotate in the rubber accommodating body. Therefore, it is possible to prevent the rubber body from rotating in the rubber container.

[3] Claims 1 to 3, the half-moon roller according to the above [1] or [2], and a rotary shaft for rotating the half-moon roller. The rotary shaft is used for a recording paper cassette. A recording device in which a through hole is provided so as to correspond to the recording paper accommodated therein. According to this structure, the position of the half-moon roller can be changed according to the recording papers stored in the recording paper cassette, so that the recording papers stored in the recording paper cassettes can be surely loaded one by one. Can be sent out.

[0064]

Since the present invention is constructed as described above, it has the following effects. According to the invention described in any one of claims 1 to 3, the half-moon roller can be easily replaced.

Particularly, according to the second aspect of the invention, the position of the half-moon roller can be changed according to the recording paper stored in the recording paper cassette. Further, according to the third aspect of the invention, the uppermost recording paper contained in the recording paper cassette can be reliably fed one by one.

[Brief description of drawings]

FIG. 1 is a block diagram showing the configuration of a facsimile device.

FIG. 2 is a perspective view showing a relationship between a recording paper cassette and a half-moon roller.

FIG. 3 is an explanatory view showing a rotation mechanism of a half-moon roller.

FIG. 4 is an explanatory diagram showing a configuration of a rotating shaft.

FIG. 5 is a perspective view showing a half-moon roller.

FIG. 6 is a perspective view showing a core portion of a half-moon roller.

FIG. 7A is a left side view showing the core portion of the half-moon roller. (B) The front view which shows the core part of a half-moon roller. (C) Front sectional drawing which shows the core part of a half-moon roller. (D) A right side view showing the core portion of the half-moon roller. (E) The bottom view which shows the core part of a half-moon roller.

FIG. 8 is a side view showing a rubber body.

FIG. 9 is an explanatory diagram for explaining an operation when assembling the core portion of the half-moon roller and the rubber body.

FIG. 10 is a flowchart showing an operation when replacing the half-moon roller after rotating the half-moon roller.

[Explanation of symbols]

1 ... a facsimile machine with a copying function as a recording device,
70 ... Recording paper cassette, 71 ... Recording paper, 73 ... Motor,
74 ... Half-moon roller, 75 ... Rotating shaft, 75a ... Through hole, 21
Numerals 0 ... Fitting portions constituting detaching means, 216, 217 ... Convex portions constituting detaching means, 230 ... Positioning pins as positioning means.

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[Procedure amendment]

[Submission date] August 30, 2002 (2002.8.3)
0)

[Procedure Amendment 1]

[Document name to be amended] Statement

[Name of item to be amended] Title of invention

[Correction method] Change

[Correction content]

RECORDING DEVICE

[Procedure Amendment 2]

[Document name to be amended] Statement

[Name of item to be amended] Claims

[Correction method] Change

[Correction content]

[Claims]

[Procedure 3]

[Document name to be amended] Statement

[Correction target item name] 0006

[Correction method] Change

[Correction content]

The present invention has been made in view of such a problem, and an object thereof is to provide a recording apparatus in which the half-moon roller can be easily replaced.

[Procedure amendment 4]

[Document name to be amended] Statement

[Correction target item name] 0007

[Correction method] Change

[Correction content]

In order to achieve the above-mentioned object, in the invention described in claim 1, the rotary shaft for transmitting the rotational driving force from the motor, and the recording paper provided on the rotary shaft and accommodated in the recording paper cassette are provided. In the recording apparatus provided with a half-moon roller for sending out, the half-moon roller is provided with an attaching / detaching means so as to be detachable from the outside of the apparatus. Accordingly, the half-moon roller is configured to be attachable to and detachable from the rotary shaft, so that the half-moon roller can be removed from the rotary shaft and replaced with a new half-moon roller.

[Procedure Amendment 5]

[Document name to be amended] Statement

[Correction target item name] 0008

[Correction method] Change

[Correction content]

According to a second aspect of the invention, the attaching / detaching means includes a fitting portion fitted to the rotating shaft and a positioning means.
The positioning means is inserted into a through hole formed in the rotary shaft, and the half-moon roller is attached to the rotary shaft by fitting the fitting portion to the rotary shaft. Thus, when the positioning means is inserted into the through hole provided through the rotary shaft, the mounting position of the half-moon roller with respect to the rotary shaft is determined.

[Procedure correction 6]

[Document name to be amended] Statement

[Correction target item name] 0009

[Correction method] Change

[Correction content]

According to a third aspect of the invention, the through hole is
It is characterized in that a plurality of half-moon rollers are formed so that the positions thereof can be changed according to the size of the recording paper. As a result, the position of the half-moon roller can be changed according to the recording paper stored in the recording paper cassette.

[Procedure Amendment 7]

[Document name to be amended] Statement

[Correction target item name] 0010

[Correction method] Change

[Correction content]

According to another aspect of the present invention, the paper feed includes a rotary shaft for transmitting the rotational driving force from the motor, and a half-moon roller provided on the rotary shaft for feeding the recording paper stored in the recording paper cassette. In the device, the half-moon roller includes a core portion that fits on the rotating shaft and a rubber body that covers the core portion, and the core portion and the fitting portion that fits on the rotating shaft. A positioning means formed at the bottom of the section,
The positioning means is inserted into a through hole formed in the rotary shaft, and the half-moon roller is attached to the rotary shaft by fitting the fitting portion to the rotary shaft. Accordingly, the half-moon roller is configured to be attachable to and detachable from the rotary shaft, so that the half-moon roller can be removed from the rotary shaft and replaced with a new half-moon roller.

[Procedure Amendment 8]

[Document name to be amended] Statement

[Correction target item name] 0011

[Correction method] Change

[Correction content]

The core member is formed in a substantially fan shape, and a pair of recesses extending in the axial direction are formed at both left and right ends with respect to the rotation surface of the half-moon roller of the rubber container formed in the core member. A convex portion is also formed inside the rubber body so as to correspond to the pair of concave portions. Thus, even if the half-moon roller rotates with the rotation of the rotating shaft, the rubber body does not rotate in the rubber container.

[Procedure Amendment 9]

[Document name to be amended] Statement

[Correction target item name] 0064

[Correction method] Change

[Correction content]

[0064]

Since the present invention is constructed as described above, it has the following effects. According to the invention described in any one of claims 1 to 5, the half-moon roller of the recording apparatus can be easily replaced.

[Procedure Amendment 10]

[Document name to be amended] Statement

[Correction target item name] Explanation of code

[Correction method] Change

[Correction content]

[Explanation of Codes] 1 ... A facsimile machine with a copying function as a recording device,
70 ... Recording paper cassette, 71 ... Recording paper, 73 ... Motor,
74 ... Half-moon roller, 75 ... Rotating shaft, 75a ... Through hole, 21
0 ... Fitting part, 216, 217 ... Convex part, 230 ... Positioning pin

Claims (3)

[Claims] 1. A sheet of recording paper stored in a recording paper cassette.
In the half-moon roller that sends out one by one, a half-moon roller that has an attaching / detaching means that can be attached / detached to / from a rotating shaft that transmits the rotational driving force from a motor. 2. The half-moon roller according to claim 1, wherein
A half-moon roller provided with a positioning means which is inserted into a through hole provided through a rotary shaft to determine a mounting position on the rotary shaft. 3. The half-moon roller according to claim 2,
The positioning means is a half-moon roller which has a function of preventing rotation with respect to the rotary shaft together with a through hole of the rotary shaft.