JPH0585744U - Paper feeder - Google Patents

Abstract

(57) [Summary] [Purpose] The paper feed path from the paper storage unit can be used as a manual paper feed path. The picking roller 19 is displaced to a position where it abuts on the separation pad 16 and a position where it separates from the separation pad 16 by opening and closing the printer cover 4. In the closed state of the printer cover 4, the picking roller 19 is displaced to the contact position where it abuts the separation pad 16, and the picking roller 19 can feed the recording paper 6 in the paper storage unit 9. Further, when the printer cover 4 is open, the picking roller 19 is displaced to a separated position where the picking roller 19 is separated from the separation pad 16, and manual paper feeding from the paper accommodating portion 9 side is allowed between the picking roller 19 and the separation pad 16. A space 30 is formed, and manual feeding is possible through this space 30.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a sheet feeding device used in a printer or the like.

[0002]

[Prior Art]

 The paper feeding device is provided with a picking roller facing the paper accommodating portion for accommodating the recording paper, and the recording paper is fed from the paper accommodating portion by the picking roller.

By the way, some printers and the like are capable of manually feeding paper as needed.

[0004]

[Problems to be solved by the device]

 However, in this type of conventional printer, etc., a dedicated manual paper feed path is provided in addition to the paper feed path from the paper storage unit, and the size of the device increases due to the provision of the manual paper feed path. There was a problem.

An object of the present invention is to provide a paper feeding device that can use a paper feeding path from a paper storage unit as a manual paper feeding path.

[0006]

[Means for Solving the Problems]

 In the paper feeding device according to the present invention, a paper accommodating portion for accommodating recording paper, a picking roller provided facing the paper accommodating portion, a picking roller facing the paper accommodating portion, and a recording paper feeding direction. When the sheet is fed, the separation pad is arranged so as to be in contact with the picking roller so as to guide the recording paper to the abutting portion and separate the recording paper which comes into contact with the picking roller. Supporting means for displaceably supporting the abutting position in contact with the separation pad to form a space for allowing manual paper feeding between the separation pad and the separation pad, and abutting for abutting the picking roller against the separation pad And an operating member for displacing the position and a separation position separated from the separation pad.

[0007]

[Action]

 According to the present invention, the picking roller is displaced by the operating member to the contact position where it abuts on the separation pad and the separation position where it separates from the separation pad.

In the state where the picking roller is located at the contact position with the separation pad, the recording paper in the paper storage unit is guided by the separation pad to reach the contact part between the separation pad and the picking roller, and the picking roller moves The recording paper can be fed from the paper storage unit. Further, when the picking roller is located at a position separated from the separation pad, a space for allowing manual feeding is formed between the picking roller and the separation pad, and manual feeding can be performed through this space.

Therefore, manual paper feeding can be performed through the paper feeding path from the paper accommodation unit, and the paper feeding path from the paper accommodation unit can be used as a manual paper feeding path.

[0010]

【Example】

A printer to which the paper feeding device according to the present invention is applied will be described with reference to the drawings. In this printer, as shown in FIG. 1, the printer case 1 is hooked on the wall 2 by a hook (not shown) and is used in a hooked state on the wall 2.

The printer case 1 is formed in a rectangular box shape by a case body 3 hooked on a wall 2 and a printer cover 4 located on the front side of the upper part. Inside the printer case 1, there is provided a paper accommodating section 9 for accommodating the recording paper 6 with its front end facing downward, and a printing mechanism section 10 below the paper accommodating section 9 for accommodating the paper accommodating paper. The recording paper 6 in the section 9 can be fed to the printing mechanism section 10 for printing. Further, the printer cover 4 is attached to the case body 3 via support pins 7 so as to be openable and closable, and the printer cover 4 is opened to the front side as shown in FIG. 2 so that the recording paper 6 can be manually inserted inside. ing.

A paper insertion port 5 is formed on the upper end surface of the printer case 1, and the recording paper 6 is accommodated in the paper accommodation portion 9 through the paper insertion port 5. Further, a discharge port 8 is formed on the lower end surface of the printer case 1, and the recording paper 6 after printing is discharged through the discharge port 8. The paper insertion port 5 is formed in the printer cover 4, and the paper ejection port 8 is formed in the case body 3.

The printing mechanism section 10 is provided with a platen 11 and a printing head 12 facing the platen 11, and a recording paper 6 is fed between the printing head 12 and the platen 11 for printing. It is supposed to be done. The platen 11 extends in a direction orthogonal to the feeding direction of the recording paper 6. The print head 12 is guided by a pair of guide shafts 13 and driven to run parallel to the platen 11.

In the vicinity of the printing mechanism unit 10, a paper feed roller 14 is provided above and a paper discharge roller 15 facing the paper discharge port 8 is provided below the paper feed roller 14. Therefore, the recording paper 6 is fed to the printing mechanism unit 10 for printing, and after the printing, the recording paper 6 is discharged through the paper discharge port 8 by the paper discharge roller 15. A picking roller 19 is provided above the paper feed roller 14 so as to face the paper storage unit 9. The picking roller 19 feeds the recording paper 6 from the paper storage unit 9 to the paper feed roller 14. It is like this.

The paper accommodating portion 9 includes a rib 4 a formed on the back surface of the printer cover 4 and facing the front surface of the recording paper 6, and a box portion 3 a formed on the case body 3 and facing the back surface of the recording paper 6. The rib 3b is formed on the case body 3 and faces the surface of the recording paper 6 below the rib 4a. As shown in FIG. 3, a plurality of ribs 4a are provided along the width direction of the recording paper 6, and a plurality of ribs 3b are provided corresponding to the ribs 4a along the width direction of the recording paper 6. The box portion 3a faces the back surface of the recording paper 6 over the entire width direction thereof. A circuit board 17 is provided inside the box portion 3a as shown in FIG. 3, and the printing operation is controlled by the circuit board 17.

A separation pad 16 that is inclined with respect to the feeding direction of the recording paper 6 so as to face the leading end of the recording paper 6 is provided in the lower portion of the paper storage unit 9. The separation pad 16 faces the separation pad 16. A picking roller 19 is provided.

The separation pad 16 abuts the picking roller 19 when feeding the recording paper 6 from the inside of the paper accommodating portion 9 to the paper feed roller 14, and guides the recording paper 6 in the paper accommodating portion 9 to the abutting portion. As a result, the recording paper 6 is fed by the picking roller 19 from the inside of the paper storage portion 9 to the paper feed roller 14. The separation pad 16 is made of urethane foam, which is a high friction member, and contacts the picking roller 19 when the picking roller 19 feeds the recording paper 6 from the paper accommodating portion 9 to the paper feeding roller 14. 6 is separated to prevent double feeding of the recording paper 6. The separation pad 16 is supported by the case body 3 via a leaf spring 18, and when it comes into contact with the picking roller 19, it is pressed by the picking roller 19 by the urging force of the leaf spring 18.

The picking roller 19 is rotatably supported by one end of a supporting lever 20 which constitutes a supporting means. An intermediate portion of the support lever 20 is swingably supported by a printer frame 21 in the case body 3 via a support shaft 22, and the swinging motion around the support shaft 22 causes the picking roller 19 to move as shown in FIG. The contact position for contacting the separation pad 16 and the separation position for separating the separation pad 16 from the separation pad 16 and forming a space 30 for allowing manual feeding as shown in FIG. I am Around the support lever 20, there is provided a stopper 23 that comes into contact with the support lever 20 when the picking roller 19 comes into contact with the separation pad 16, and the support lever 20 moves in the direction in which the support lever 20 comes into contact with the stopper 23. A pulling coil spring 24 for urging the pulling coil spring 24 is provided, and the picking roller 19 is held at the position of contact with the separation pad 16 by the biasing force of the pulling coil spring 24, so that the picking roller 19 is supported against the biasing force of the pulling coil spring 24. The picking roller 19 is separated from the separation pad 16 when the lever 20 is swung.

The picking roller 19 is displaced to the contact position with the separation pad 16 and the separation position by opening and closing the printer cover 4. That is, a lever 25 that interlocks the printer cover 4 and the support lever 20 is provided between the printer cover 4 and the support lever 20, and the picking roller 19 is brought into contact with the separation pad 16 by the opening / closing operation of the printer cover 4 via the lever 25. And is displaced to the separated position. Therefore, the printer cover 4 and the lever 25 serve as an operation member for displacing the picking roller 19 with the separation pad 16 into the contact position and the separation position.

An intermediate portion of the lever 25 is pivotally supported in the case body 3 via a support pin 26 so as to be swingable. A pressing portion 25a is formed at one end of the lever 25 so as to face the end of the supporting lever 20 on the side opposite to the picking roller shaft supporting portion, and the pressing portion 25a is swung around the support pin 26 so that the supporting lever 20 moves. The support lever 20 can be swung in a direction in which the picking roller 19 is separated from the separation pad 16 by pressing an end portion opposite to the picking roller shaft support portion. A roller 27 is attached to the other end of the lever 25, and the lever 25 is swung by the opening / closing operation of the printer cover 4 via the roller 27. The printer cover 4 is formed with a protrusion 4b facing the roller 27. When the protrusion 4b is opened, the roller 27 is pressed by the protrusion 4b to swing the lever 25 in a direction in which the picking roller 19 is separated from the separation pad 16. As shown in FIG. 2, when the printer cover 4 is open, the picking roller 19 is located at a position separated from the separation pad 16, and when the printer cover 4 is closed, as shown in FIG. In addition, the picking roller 19 is displaced to a contact position with the separation pad 16. That is, when the printer cover 4 is opened, the roller 27 is pressed by the protruding piece 4b of the printer cover 4 and the lever 25 swings. This swinging operation causes the pressing portion 25a of the lever 25 to support the supporting lever 20. The end of the picking roller on the side opposite to the pivotal support is pressed to swing the support lever 20 against the biasing force of the tension coil spring 24, and the swinging operation causes the picking roller 19 to separate from the separation pad 16. It is designed to be displaced. When the printer cover 4 is closed, the levers 25 and 20 oscillate by the urging force of the tension coil spring 24 so that the roller 27 follows the protrusion 4b of the printer cover 4, and this oscillating action causes the picking roller to move. 19 is displaced to the position where it abuts on the separation pad 16.

Next, the operation will be described. When the printer cover 4 is closed, the roller 27 causes the protrusion 4b of the printer cover 4 to move.
The levers 25, 20 oscillate by the urging force of the tension coil spring 24 so that the picking roller 19 abuts the separation pad 16 as shown in FIG. When the recording paper 6 is accommodated in the paper accommodating portion 9 through the recording paper 6, the recording paper 6 can be fed from the inside of the paper accommodating portion 9 to the paper feed roller 14 by the picking roller 19 and printing can be performed. When the recording paper 6 is fed from the inside of the paper accommodating portion 9, the recording paper 6 is guided by the separation pad 16 to reach the contact portion between the separation pad 16 and the picking roller 19, whereby the recording paper 6 is picked up. At 19, the recording paper 6 is fed from the inside of the paper storage unit 9 to the paper feed roller 14, and at the time of this feeding, the recording paper 6 abutting against the picking roller 19 is separated by the separation pad 16 and the double feeding of the recording paper 6 is prevented.

When the printer cover 4 is opened, the roller 27 is pressed by the protruding piece 4b of the printer cover 4 and the lever 25 swings. This swinging motion causes the pressing portion 25a of the lever 25 to pick the support lever 20. The support lever 20 swings against the urging force of the tension coil spring 24 by pressing the end portion on the side opposite to the roller shaft supporting portion, and this swinging operation separates the picking roller 19 as shown in FIG. A space 30 for allowing manual feeding is formed between the picking roller 19 and the separation pad 16 apart from the pad 16, and the recording paper 6 is manually fed to the paper feeding roller 14 through this space 30. Can be printed.

Therefore, manual paper feeding can be performed through the paper feeding path from the paper accommodation unit 9, and the paper feeding path from the paper accommodation unit 9 can be used as a manual paper feeding path. This makes it possible to reduce the size of the printer.

During printing, the paper feed roller 14 feeds the recording paper 6 to the printing mechanism unit 10 for printing, and after printing, the paper ejection roller 15 allows the recording paper 6 to pass through the paper ejection port 8. And is discharged to the outside of the printer case 1.

In the above-described embodiment, the picking roller 19 is displaced to the position where it abuts on the separation pad 16 and the position where it separates from the separation pad 16 in conjunction with the opening / closing operation of the printer cover 4. The swinging operation may be performed independently of the opening / closing operation of the printer cover 4, and the picking roller 19 may be displaced to the raised and lowered positions by the swinging operation of the lever 25.

Further, in the above-described embodiment, an example in which the invention is applied to the printer has been described, but the invention is not limited to the printer and can be applied to a copying machine or the like.

[0027]

[Effect of the device]

 As described above, in the paper feeding device according to the present invention, the space for allowing the manual feeding is provided between the contact position where the picking roller abuts the separation pad by the supporting means and the separation pad and the separation position. The picking roller is displaceably supported at the separating position to be formed, and the picking roller is displaced by the operating member between the abutting position where it abuts the separation pad and the separating position where the picking roller is separated from the separation pad. This has an excellent effect that the path can be used as a manual paper feed path and the size of a device such as a printer can be reduced.

[Brief description of drawings]

FIG. 1 is a vertical cross-sectional view showing a paper feed state from a paper storage unit.

FIG. 2 is a vertical sectional view showing a manual sheet feeding state.

3 is a cross-sectional view taken along the line AA of FIG.

[Explanation of symbols]

 4 Printer Cover (Operating Member) 9 Paper Housing 16 Separation Pad 19 Picking Roller 20 Support Lever (Supporting Means) 25 Lever (Operating Member) 30 Space

Claims (2)

[Scope of utility model registration request] 1. A paper accommodating portion for accommodating recording paper, a picking roller provided so as to face the paper accommodating portion, a picking roller opposed to the paper accommodating portion and with respect to a feeding direction of the recording paper. The picking roller is separated from the separation pad, which is disposed so as to be inclined, contacts the picking roller at the time of feeding, guides the recording paper to the abutting portion, and separates the recording paper that contacts the picking roller. Supporting means for displaceably supporting the abutting position abutting the pad and the separating pad spaced apart from the separating pad to form a space for allowing manual paper feeding, and the picking roller abutting on the abutting position. A sheet feeding device comprising: an operation member that is displaced to a contact position and the separated position. 2. The cover according to claim 1, wherein the operation member includes a cover that is capable of opening and closing the paper accommodating portion, and the picking roller is located at the abutting position in a closed state of the cover, and A sheet feeding device comprising: a lever that is provided between the cover and the picking roller so as to be interlocked with each other so as to be positioned at the separated position in an open state.