JPH0592245U - Image forming device using cut paper - Google Patents

Abstract

(57) [Abstract] [Purpose] Easily handle jams caused by the use of cut sheets in image forming apparatuses. [Structure] An opening 10 is provided in a side surface 1a of a main body case 1 on the side of a paper feed roller 9 inside the apparatus, an opening / closing cover 13 is openably and closably provided in the opening 10, and a separating member 21 is fed to the opening / closing cover 13. The roller 9 is provided so that it can be pressed. As a result, when the open / close cover 13 is closed,
While the separating member 21 presses the paper feed roller 9, the recording paper K is separated and conveyed one by one. Also, the opening / closing cover 13
Is opened, the separating member 21 is separated from the paper feed roller 9 and the paper feed roller 9 can be exposed from the opening 10. Therefore, the jam of the recording paper K can be easily processed.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an image forming apparatus using cut sheets, and more particularly, to a mounting structure of a separating member that separates cut sheets one by one when they are conveyed.

[0002]

[Prior Art]

 Conventionally, when a cut sheet is used as a recording sheet in an image forming apparatus such as a facsimile machine, a sheet feeding roller is rotatably provided at a position where it abuts against the leading edge of the cut sheet stored in the apparatus body, and a separating member is provided. It is provided so that it can be pressed against the outer peripheral surface of the paper feed roller, and cut paper is conveyed by the rotation of the paper feed roller, and at the same time, it is separated into individual sheets by a separation member and sent to the recording unit. It was supposed to be printed.

[0003]

[Problems to be solved by the device]

 However, since the paper feed roller and the separating member are mounted on the main body of the apparatus, if a jam occurs when the cut paper is conveyed by the paper feeding roller and the separating member, the respective members interfere with each other. There was a problem that the jam handling was troublesome.

An object of the present invention is to provide an image forming apparatus using a cut sheet that can easily handle a jam of the cut sheet.

[0005]

[Means for Solving the Problems]

 In order to solve the above-mentioned problems, the invention of claim 1 is an image forming apparatus provided with a paper feed roller for supplying cut sheets inside the apparatus, wherein a side surface of the device case on the side of the paper feed roller. The gist of the present invention is that an opening is provided so as to be openable and closable, an opening and closing cover is provided at the opening, and a separating member is provided at the opening and closing cover so as to be able to press against the sheet feeding roller.

According to a second aspect of the present invention, there is provided an image forming apparatus in which a sheet feeding roller for supplying cut sheets is provided inside the apparatus, and an opening is provided on a side surface and an upper surface of the sheet feeding roller side. An opening / closing cover in which a side cover and a top cover are integrally formed is provided in the opening so as to be openable and closable, and a separating member is provided in the side cover so as to be able to press the feed roller. It is a summary.

[0007]

[Action]

 According to the invention of claim 1 configured as described above, when the opening / closing cover is closed, the separating member presses the sheet feeding roller to convey the cut sheet by the rotation of the sheet feeding roller, and the separating member causes the sheet to be cut. Separated one by one. Also, when the open / close cover is opened, the separating member is separated from the paper feed roller, and the paper feed roller and the like can be exposed through the opening on the side of the device case. can do.

According to the second aspect of the present invention, when the open / close cover in which the upper cover and the side cover are integrally formed is closed, the separating member presses the paper feed roller and the paper feed roller rotates to cut the cut paper. Are conveyed and separated one by one by the separating member. Further, when the open / close cover is opened, the separating member is separated from the paper feed roller, and the paper feed roller and the like can be exposed from the side and top openings of the apparatus case. It can be easily processed.

[0009]

【Example】

 A first embodiment in which the present invention is embodied in a printer will be described below with reference to FIGS.

First Embodiment As shown in FIG. 1, a main body case 1 of a printer is formed in a box shape, and a cassette storage for storing a paper feed cassette 5 described later is provided in a lower portion of the front surface (left side in FIG. 1). Mouth 2 is formed. A plate-shaped support plate 3 is provided from the lower end of the cassette storage opening 2 in the longitudinal direction inside the main body case 1, and a cassette storage portion 4 is provided above it. Further, a paper feed cassette 5 is housed in the cassette housing section 4 so that a large number of recording paper K as cut papers can be housed and supplied in a stacked state so as to be inserted and removed. The paper feeding cassette 5 is formed in a box shape having an open top, and a step portion 5a is formed so that a part of the bottom surface thereof projects. A paper support plate 6 and a coil spring 7 are provided on the step portion 5a in the paper feed cassette 5 so as to press the stored recording paper K upward. When the paper feed cassette 5 is stored in the cassette storage portion 4, the paper feed cassette 5 is brought into contact with and locked by a locking plate 8 provided upright on the support plate 3 of the main body case 1.

A paper feed roller 9 is disposed above the right end of the paper feed cassette 5 in FIG. 1 at a position in contact with the recording paper K. An opening 10 is provided on the side surface 1a of the main body case 1 on the side of the paper feed roller 9, and a lower end 10a of the opening is located above the support plate 3. On the other hand, the opening upper end 10b of the opening 10 is located such that the upper surface of the main body case 1 is slightly extended from the side surface 1a. A pair of bearings 11 (only one of which is shown) is provided on the side surface 1a near the lower end portion 10a, and a support shaft 12 is provided on both bearings 11. A plate-shaped open / close cover 13 that covers the opening 10 is rotatably supported on the support shaft 12, and the lower portion of the open / close cover 13 is formed to be bent toward the paper feed roller 9. The upper end portion 13a is close to the opening upper end portion 10b.

As shown in FIG. 3, the opening / closing cover 13 has a locking projection 14 projecting from the upper end 13a thereof, while the opening upper end 10b has a locking groove 15 recessed therein. The locking projection 14 is always engaged with the locking groove 15 so that the opening / closing cover 13 is placed in the closed state. Further, a semi-bell-shaped pull tab 16 having an open lower end is projected from the upper portion of the outer surface of the opening / closing cover 13. By pulling the pull tab 16, the open / close cover 13 is opened as shown in FIG. It is supposed to be located.

As shown in FIG. 1, a pair of bearings 17 (only one of which is shown) is provided on the upper portion of the inner surface of the opening / closing cover 13, and a support shaft 18 is provided on both bearings 17. An upper end of an arm 19 which is bent in an inverted V shape is rotatably supported on the support shaft 18. A mounting base 20 is formed on the lower surface of the arm 19 opposite to the opening / closing cover 13, and a rubber-plate-shaped separating member 21 is mounted on the mounting base 20. Further, a leaf spring 22 for pressing the arm 19 is attached to the inner surface of the opening / closing cover 13, and the vicinity of the tip end portion thereof is formed in a semicircular shape and abuts on the arm 19 as a pressing portion 22a. When the opening / closing cover 13 is normally closed by urging the arm 19 clockwise, the leaf spring 22 causes the separating member 21 to press the sheet feeding roller 9. There is.

As shown in FIGS. 1 to 3, a micro switch 23 is provided in the device near the upper end 13 a of the opening / closing cover 13, and the switch piece 23 a is used for opening / closing the opening / closing cover 13. Accordingly, the switch 23 is turned on / off.

As shown in FIG. 1, a recording paper guide 24 is provided in the vicinity of the paper feed roller 9. The paper feed roller 9 rotates and the separating member 21 presses the paper feed roller 9. By the contact, the recording paper K in the paper feeding cassette 5 is separated and fed one by one, and is also conveyed to the recording unit 25 via the recording paper guide 24.

The recording unit 25 is disposed above the paper feed cassette 5, and has a pair of first and second transport rollers 26 and 27 and the first and second transport rollers 26 and 2. It is composed of an ink jet head 28 and a paper guide 29 which are arranged between the sheets 7. Then, the recording paper K is sent onto the paper guide 29 by the rotation of the first carrying roller 26, printing is performed by the inkjet head 28, and is discharged by the rotation of the second carrying roller 27. ..

A discharge port 30 for discharging the recording paper K is formed on the front surface of the main body case 1 and above the cassette storage port 2. A plate-shaped paper discharge tray 31 is provided between the discharge port 30 and the cassette storage port 2. The recording paper K printed by the recording unit 25 and discharged is placed on the discharge tray 31 and can be taken out from the discharge port 30. A partition wall 32 is provided from the upper end of the discharge port 30 to the vicinity of the upper portion of the second transport roller 27.

Next, the operation of the printer thus configured will be described. When printing on the recording paper K, by engaging the locking projection 14 of the opening / closing cover 13 with the locking groove 15, the switch piece 23a of the micro switch 23 comes into contact with the inner surface of the opening / closing cover 13 and moves to turn on. To be done. Then, the control circuit inside the printer determines that the opening / closing cover 13 is closed. Next, when print data is input, the paper feed roller 9 is rotated and the recording paper K on the paper feed cassette 5 is separated sheet by sheet by pressing and abutting the separation member 21 against the paper feed roller 9. The sheet is fed and then conveyed to the recording section 25 via the recording sheet guide 24. Then, the recording paper K is fed onto the paper guide 29 by the rotation of the first transport roller 26, printing is performed by the inkjet head 28, and is discharged to the paper discharge tray 31 by the rotation of the second transport roller 27. .

Further, when a jam occurs when the recording paper K is fed by the paper feed roller 9 and the separating member 21, as shown in FIG. 2, by pulling the pull tab 16 of the opening / closing cover 13 to the front side, The engagement between the engagement protrusion 14 and the engagement groove 15 is released, and the opening / closing cover 13 is rotated in the clockwise direction around the support shaft 12, and the base end portion thereof comes into contact with the side surface 1a to be opened. Is located. Then, the separation member 21 is separated from the paper feed roller 9 together with the opening / closing cover 13. As a result, the paper feed roller 9, the recording paper guide 24, and the like can be exposed from the opening 10, so that the jam of the recording paper K generated between the respective members can be treated. When the opening / closing cover 13 is opened, the switch piece 23a of the micro switch 23 moves and is turned off. Therefore, the control circuit determines that the opening state is open and stops all printing operations.

As described above, in the printer of the first embodiment, the opening 10 is transparently provided on the side surface 1 a on the paper feed roller 9 side, and the opening / closing cover 13 is rotated around the support shaft 18 in the opening 10. The opening / closing cover 13 is openable and the opening / closing cover 13 is opened even if a jam occurs when the recording paper K is fed, by providing the opening / closing cover 13 with the separating member 21 that presses and abuts the paper feed roller 9. You can easily check and handle jams simply by setting.

When the separation member 21 is replaced due to wear due to such a configuration, it can be easily replaced by simply opening the open / close cover 13 in the same manner as in the jam processing.

Next, a second embodiment will be described. The same or corresponding components as those of the first embodiment are designated by the same reference numerals and the description thereof will be omitted.

Second Embodiment As shown in FIG. 4, a continuous opening 33 is formed from the side surface 1 a to the upper surface 1 b of the main body case 1 on the paper feed roller 9 side. One end is located in the same manner as the opening lower end 10a of the first embodiment, and the other end is located on the upper end 33a of the side surface 1c (left side in FIG. 1) of the body case 1. An opening / closing cover 34, which is integrally formed with a side cover and an upper cover for covering the opening 33, is rotatably supported on the support shaft 18 laid on the bearing 17. In the closed state, the end 34a of the open / close cover 34 is placed on the upper end 33a.

As shown in FIGS. 4 to 6, a micro switch 35 is provided in the device in the vicinity of the end 34 a of the opening / closing cover 34, and the switch piece 35 a corresponds to the opening / closing operation of the opening / closing cover 34. The switch 35 is turned on and off.

Next, the operation of the printer thus configured will be described. When printing on the recording paper K, if the end portion 34a of the opening / closing cover 34 is placed on the upper end portion 33a of the opening 33, the switch piece 35a of the micro switch 35 comes into contact with the inner surface of the opening / closing cover 34 and moves to turn on. Be operated. Then, the control circuit inside the printer determines that the opening / closing cover 34 is closed. Next, when print data is input, the paper feed roller 9 is rotated, and the recording paper K on the paper feed cassette 5 is separated sheet by sheet by pressing and abutting the separation member 21 against the paper feed roller 9. The paper is fed and conveyed to the recording unit 25 via the recording paper guide 24. Then, the recording paper K is sent onto the paper guide 29 by the rotation of the first transport roller 26, printing is performed by the inkjet head 28, and is discharged to the discharge tray 31 by the rotation of the second transport roller 27.

Further, when a jam occurs when the recording paper K is fed by the paper feed roller 9 and the separating member 21, as shown in FIG. 5, the opening / closing cover 34 is lifted upward from the end portion 34a. Then, the opening / closing cover 34 is rotated in the clockwise direction around the support shaft 12, and its base end portion is brought into contact with the side surface 1a to be positioned in the open state. Then, the separating member 21 is separated from the sheet feeding roller 9 together with the opening / closing cover 34. As a result, the paper feed roller 9, the recording paper guide 24, and the like can be exposed from the opening 33, so that the jam of the recording paper K generated between the respective members can be treated. When the opening / closing cover 34 is opened, the switch piece 35a of the micro switch 35 moves and is turned off. Therefore, the control circuit determines that it is in an open state and stops all printing operations.

As described above, in the printer of the second embodiment, the opening 33 is transparently provided on the side surface 1 a and the upper surface 1 b on the side of the paper feed roller 9, and the side surface cover and the upper surface cover are formed in the opening 33. The open / close cover 34 formed on the body is provided so as to be opened and closed by rotating around the support shaft 12, and the open / close cover 34 is provided with the separating member 21 that presses and abuts the paper feed roller 9. Even if a jam occurs during paper feeding, the jam can be easily confirmed and processed by simply opening the open / close cover 34.

Further, since the side cover and the top cover are integrally formed in the opening / closing cover 34, not only the jam processing but also the maintenance of other members can be performed only by opening the cover 34. You can

Furthermore, since the user can see the inside of the apparatus by opening the opening / closing cover 34 first for trouble such as jam occurrence, the user can perform jam processing without hesitation.

Further, by providing the opening / closing cover 34, it is not necessary to separately open and close the upper cover and the side cover, the number of members such as microswitches provided in each cover is reduced, and the cost is suppressed. You can

The present invention is not limited to the above-mentioned embodiments, and can be arbitrarily modified without departing from the spirit of the present invention.

[0032]

[Effect of the device]

 As described above in detail, the image forming apparatus using cut sheets according to the inventions of claims 1 and 2 has an excellent effect that the jam of the cut sheet can be easily treated.

[Brief description of drawings]

FIG. 1 is a sectional view schematically showing the inside of a printer device according to a first embodiment.

FIG. 2 is a partial cross-sectional view showing an open state of the opening / closing cover.

FIG. 3 is a partial cross-sectional view showing a closed state of the opening / closing cover.

FIG. 4 is a sectional view schematically showing the inside of the printer device according to the second embodiment.

FIG. 5 is a partial cross-sectional view showing an open state of the opening / closing cover.

FIG. 6 is a partial cross-sectional view showing a closed state of the opening / closing cover.

[Explanation of symbols]

1 main body case, 1a side surface, 1b upper surface, 9 paper feed rollers, 13, 34 open / close cover, 21 separation member, K
Recording paper.

Claims (2)

[Scope of utility model registration request] 1. An image forming apparatus having a paper feed roller for supplying cut sheets inside the apparatus, wherein an opening is provided on a side surface of the device case on the side of the paper feed roller.
An image forming apparatus using cut paper, characterized in that an opening / closing cover is provided at the opening so as to be openable / closable, and a separating member is provided at the opening / closing cover so as to be able to press against the sheet feeding roller. 2. An image forming apparatus having a paper feed roller for supplying cut paper inside the apparatus, wherein an opening is provided on a side surface and an upper surface of the paper feed roller side, and a side cover is provided at the opening. An image forming apparatus using cut paper, wherein an opening / closing cover integrally formed with a top cover is provided so as to be openable and closable, and a separating member is provided on the side cover so as to be able to press against the paper feeding roller.