JPH0789192A - Printer and its roller cleaning sheet - Google Patents

Abstract

PURPOSE:To provide a roller cleaning sheet which is mounted on a paper cassette of a printer and can easily and safely clean a pick roller and a second paper feed roller whose manual cleaning is difficult. CONSTITUTION:To a sheet body 14 of a roller cleaning sheet, a first cleaning member 16 for cleaning a pick roller 9 is attached. A second cleaning member 17 for cleaning a second paper feed roller 12 is attached to a curved part 15 formed by curving the end part of the sheet body 14 in the direction of the second paper feed roller 12.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a roller cleaning sheet for cleaning a sheet feeding roller provided in a printer body.

[0002]

2. Description of the Related Art FIG. 7 is a schematic sectional view showing a conventional general printer. In the figure, 1 is a printer main body, 2 is a thermal head provided in the printer main body 1, 3
Is a platen roller facing the thermal head 2, 4
Is an ink sheet sent between the thermal head 2 and the platen roller 3, and 5, 6, and 7 are first, second, and third sheets arranged in the printer body 1 to form a sheet path. A guide, 8 is a paper cassette detachably attached to the printer body 1, 9 is provided above the paper cassette 8, and the paper (not shown) in the paper cassette 8 is separated and taken out one by one. A pick roller 10 having a D-shaped section for feeding to the first paper guide 5 side is provided in the middle of the paper path formed by the first and second paper guides 5 and 6 and fed from the pick roller 9. A first paper feed roller 11 for feeding the paper to the platen roller 3, a first paper feed roller 11 provided in contact with the first paper feed roller 10 and rotated by rotation of the first paper feed roller 10, 12 To the first paper feed roller 10 A second paper feed roller 13 provided on the opposite side of the pick roller 9 in the middle of the paper path formed by the third paper guide 7 for giving back tension to the paper being printed and also for ejecting the paper. Is provided in contact with the second paper feed roller 12
Is a second paper feed auxiliary roller that rotates by the rotation of.

[0003]

Since the conventional printer is constructed as described above, even if the cover A is opened in the direction of the arrow, it is not opened and the pick roller 9 and the second paper feed roller are located at the back position. No. 12 is very difficult to wipe with a cloth, especially the second paper feed roller 12 can hardly be cleaned,
There is a problem in that there is a risk of injury if a hand is inserted and an attempt is made to clean it by force, and there is a danger.

The present invention has been made to solve the above problems, and a printer mounted on a paper cassette for easily and safely cleaning the pick roller and the second paper feeding roller, which are difficult to clean by hand. The purpose is to obtain the roller cleaning sheet. Another object of the present invention is to obtain a printer capable of preventing the roller cleaning sheet from being fed into the printer body.

[0005]

According to another aspect of the present invention, there is provided a roller cleaning sheet for a printer, wherein a first cleaning member for cleaning a pick roller is attached to a sheet body and an end portion of the sheet body is supplied with a second sheet. A second cleaning member for cleaning the second paper feed roller is attached to a bent portion formed by bending in the direction of the second paper feed roller along the axial direction of the paper roller. In the printer according to the second aspect of the present invention, the second paper feed roller is brought into contact with the cleaning member at the bent portion of the roller cleaning sheet during cleaning so as to rotate in the direction opposite to the pick roller.

[0006]

According to the present invention, the first and second cleaning members come into contact with the pick roller and the second paper feed roller, respectively, by mounting the paper cassette on the paper cassette, so that the pick roller and the second paper feed roller are brought into contact with each other. The rotation of the rollers causes the first and second cleaning members to clean the rollers. According to the second aspect of the present invention, the force of the pick roller attempting to convey the roller cleaning sheet is canceled by the second paper feeding roller rotating in the opposite direction, and the bent portion of the roller cleaning sheet functions as a stopper. , Prevent the roller cleaning sheet from being fed into the printer body.

[0007]

【Example】

Example 1. An embodiment of the roller cleaning sheet of claim 1 will be described with reference to FIGS. 1 is a perspective view, FIG. 2 is a perspective view showing a mounting state in a paper cassette, and FIG. 3 is a sectional view showing a state in which the paper cassette in FIG. 2 is mounted in a printer. Are denoted by the same reference numerals and description thereof will be omitted.

In the figure, 14 is a mount as a sheet body, and this mount 14 is provided with a first hook 14a as a locking portion and a second hook 14b having a hook in the opposite direction. And these are locked to the paper cassette 8. Reference numeral 15 is a bent portion formed by curving around the end of the mount 14 so as to be wound around a roller, and 16 is a first cleaning member bonded to the mount 14 so that the pick roller 9 contacts. The first cleaning cloth 17 is a bent portion 15 of the mount 14 so that the second paper feed roller 12 is in contact therewith.
It is a second cleaning cloth as a second cleaning member which is wound around and adhered to two pieces, and these first and second cleaning cloths 1
Each of 6 and 17 has a sponge shape and is impregnated with a cleaning liquid such as ethyl alcohol. Further, the first and second cleaning cloths 16 and 17 are colored differently from the mount 14 so that the cleaning liquid can be easily impregnated.

When the roller cleaning sheet constructed as described above is used, it is mounted in the paper cassette 8 as shown in FIG. 2, and the paper cassette 8 is installed in the printer body 1. As a result, as shown in FIG. 3, the roller cleaning sheet is set at the position where the pick roller 9 and the second paper feed roller 12 come into contact with the cleaning cloths 16 and 17, respectively.

By pressing the paper feed button in the state shown in FIG. 3, the pick roller 9 and the second paper feed roller 12 rotate while contacting the cleaning cloths 16 and 17, respectively, and the surfaces thereof are the cleaning cloths 16 respectively. , 17 for cleaning. In such a roller cleaning sheet, the second cleaning cloth 17 comes into contact with the second sheet feeding roller 12 in an oblique direction due to the bent portion 15 of the mount 14, and the contact area wound around the second sheet feeding roller 12 is large. There are many cleaning effects.
Further, by providing the mount 14 with an appropriate elasticity, the bent portion 15 bends in response to a change in the shape of the second paper feed roller 12, and the second cleaning cloth 17 is always attached to the second paper feed roller 12. Get in touch.

By using such a roller cleaning sheet, it is easy to clean the pick roller 9 and the second paper feed roller 12 which are difficult to clean even if the cover A is opened in the direction of the arrow without opening the cover A. You can do it. At this time, mount 1
Since the first and second hooks 14a and 14b of the fourth unit are locked to the sheet cassette 8 in the opposite directions, the roller cleaning sheet can be easily removed by rotating the pick roller 9 and the second sheet feeding roller 12. It is never sent into 1. The sheet body is not limited to the mount 14, but it is preferable that the sheet body has appropriate elasticity so that it can be deformed along the paper path when cleaning the paper feed roller located in the complicated paper path.

Example 2. Although the folded portion 15 of the roller cleaning sheet is curved so as to be wound around the second sheet feeding roller 12 in the first embodiment, the folded portion is bent vertically as shown in FIGS. 4 and 5. The portion 15A may be used, and in this case, the effect as a stopper to be described later becomes large, and at the same time, it is possible to obtain an effect that a space (relatively large) with the second paper feeding roller 12 is filled to improve contact.

Embodiment 3. Next, an embodiment of the printer of claim 2 will be described with reference to FIG. In the figure, the same parts as those in the second embodiment are designated by the same reference numerals and the description thereof will be omitted. In the figure, the pick roller 9 and the second paper feed roller 12 are controlled so as to rotate in the directions of the arrows, and the carrying forces cancel each other out. It is never sent into 1. Further, since the first and second hooks 14a and 14b of the mount 14 are oriented in directions opposite to each other with respect to the paper feeding direction, the pick roller 9 and the second paper feeding roller 1 are temporarily assumed.
Even if there is a power imbalance between the two hooks 14
There is no backlash during cleaning because the paper cassette 8 is locked by a and 14b.

The second paper feed roller 12 is generally used in the past.
Since the pick roller 9 has a larger carrying force than the pick roller 9, even if the second paper feed roller 12 is rotated in the opposite direction with respect to the pick roller 9 as in this embodiment, the roller cleaning sheet still has the print main body mechanism. Although it is about to be erroneously fed to the sheet feeding unit (in the leftward direction in FIG. 6), the bent portion 15A has the second feeding roller 12
It engages with and acts as a stopper, preventing misdelivery.

[0015]

The roller cleaning sheet of the printer according to the first aspect of the present invention has an effect that the pick roller and the second paper feed roller, which are difficult to clean by hand, can be easily and safely mounted on the paper cassette. To be The printer according to the second aspect of the invention has an effect of preventing the roller cleaning sheet from being fed into the printer body.

[Brief description of drawings]

FIG. 1 is a perspective view showing a roller cleaning sheet according to a first embodiment of the present invention.

FIG. 2 is a perspective view showing a state in which the roller cleaning sheet of FIG. 1 is attached to a paper cassette.

3 is a cross-sectional view showing a state in which the paper cassette of FIG. 2 is attached to a printer.

FIG. 4 is a perspective view showing a second embodiment of the invention of claim 1;

5 is a cross-sectional view showing a state in which the roller cleaning sheet of FIG. 4 is attached to a paper cassette.

FIG. 6 is a cross-sectional view of essential parts showing an embodiment of a printer according to the invention of claim 2.

FIG. 7 is a schematic cross-sectional view showing a conventional printer.

[Explanation of symbols]

 8 Paper Cassette 9 Pick Roller 10 First Paper Feeding Roller 12 Second Paper Feeding Roller 14 Sheet Main Body 14a First Hook 14b Second Hook 15 Sheet Bent 16 First Cleaning Member 17 Second Cleaning Element

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[Procedure amendment]

[Submission date] January 12, 1994

[Procedure Amendment 1]

[Document name to be amended] Statement

[Correction target item name] 0008

[Correction method] Change

[Correction content]

In the figure, 14 is a mount as a sheet body, and this mount 14 is provided with a first hook 14a as a locking portion and a second hook 14b having a hook in the opposite direction. And these are locked to the paper cassette 8. Reference numeral 15 is a bent portion formed by curving around the end of the mount 14 so as to be wound around a roller, and 16 is a first cleaning member bonded to the mount 14 so that the pick roller 9 contacts. The first cleaning cloth 17 is a bent portion 15 of the mount 14 so that the second paper feed roller 12 is in contact therewith.
It is a second cleaning cloth as a second cleaning member which is wound around and adhered to two pieces, and these first and second cleaning cloths 1
Each of 6 and 17 has a sponge shape and is impregnated with a cleaning liquid such as ethyl alcohol. The first and second cleaning cloth 16, 17 is in a different color from the backing sheet 14 so that one easily determine impregnation of cleaning fluid.

Claims (2)

[Claims] 1. A pick roller for separating and taking out sheets one by one from a sheet cassette, and a first for feeding the sheets taken out by the pick roller into a printer body.
And a second paper feed roller which is located on the opposite side of the first paper feed roller to the pick roller and applies back tension to the paper and ejects the paper. A sheet main body that is detachably attached to a sheet cassette, and a first cleaning member that is attached to the sheet main body and is impregnated with a cleaning liquid and that contacts the surface of the pick roller and cleans when the pick roller rotates. When,
The sheet body is attached to a bent portion formed by bending the end portion of the sheet main body in the direction of the second paper feeding roller along the axial direction of the second paper feeding roller, and is impregnated with the cleaning liquid, and A roller cleaning sheet, comprising: a second cleaning member that comes into contact with the surface of the second paper feed roller and cleans when the second paper feed roller rotates. 2. A pick roller for separating and taking out the sheets one by one from the sheet cassette, and a first for feeding the sheets taken out by the pick roller into the printer body.
And a second paper feed roller which is located on the opposite side of the first paper feed roller to the pick roller and applies back tension to the paper and ejects the paper. A sheet main body that is detachably attached to a sheet cassette, and a first cleaning member that is attached to the sheet main body and is impregnated with a cleaning liquid and that contacts the surface of the pick roller and cleans when the pick roller rotates. When,
The sheet body is attached to a bent portion formed by bending the end portion of the sheet main body in the direction of the second paper feeding roller along the axial direction of the second paper feeding roller, and is impregnated with the cleaning liquid, and A roller cleaning sheet having a second cleaning member that comes into contact with the surface of the second paper feed roller and cleans when the second paper feed roller rotates; A printer characterized in that it is brought into contact with a second cleaning member and rotated in a direction opposite to that of the pick roller.