JP3266408B2 - Cleaning sheet and cleaning method used for recording apparatus - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to sheet transport of a recording apparatus.
Adhesiveness used to remove paper dust etc. attached to system parts
A cleaning sheet and a cleaning method .

[0002]

2. Description of the Related Art Conventionally, a recording apparatus for recording an image by separating and transporting sheets one by one includes a sheet loading table on which the sheets are loaded, and a feeding roller for feeding the sheets. And a separation pad for pressing the fed sheet against a feeding roller to separate the sheets one by one, and a transport roller pair for transporting the separated sheet along a guide plate. It has. In this recording apparatus, a recording sheet on which an image is printed is formed by passing a sheet through a sheet passing path including the separation pad, the guide plate, the transport roller pair, and the like.

[0003]

However, in the above-described conventional recording apparatus, while a large number of sheets are passed through the sheet passing section, the sheet transport system components of the recording apparatus, especially, the sheet feeding system, are required. Usually, paper powder gradually adheres to a material such as a pair of a roller and a transport roller, which uses a friction member such as rubber as a material, and the friction of the sheet transport system components is increased. The coefficient is reduced, which eventually causes problems such as poor paper feed and double feed, which hinders image formation of printing and shortens the product life.

Therefore, in order to prevent the above-mentioned problem, every time a predetermined number of sheets are passed through the sheet-passing section, a cleaning sheet having adhesiveness is applied to the sheet conveying system parts.
A recording apparatus for passing a sheet through a sheet passing section for the purpose of thinning is disclosed in JP-A-3-54588.

[0005] However, since the feeding roller as a sheet conveying system component requires a larger frictional action than other components, it is made of rubber having a high friction coefficient.
The cleaning sheet used in the above-described recording apparatus has a problem in that the paper dust and the like from the feeding roller cannot be completely removed because the paper dust and the like from the paper are easily attached. -If the adhesion of the cleaning sheet is increased, there is a problem that the cleaning sheet is jammed in the paper passage.

Accordingly, the present invention has made it possible to clean a feed roller to which paper dust or the like of a sheet is particularly likely to adhere without causing a jam due to the cleaning sheet. The purpose is to provide.

[0007]

According to the present invention, in order to achieve the above-mentioned object, a roller for feeding a sheet and a sheet are provided.
Used for a recording apparatus having a paper passage for passing paper,
Removes paper dust, etc., adhering to the rollers by passing paper in the path
Adhesive cleaning sheet that passes through the paper path.
A first adhesive surface facing the roller when the
Does not face and has lower adhesiveness than the first adhesive surface
And a second adhesive surface. The present invention
Is a roller for feeding the sheet and a sheet
An adhesive cleaning sheet having a paper path and an adhesive cleaning sheet in the paper path
Remove paper dust, etc. attached to the rollers by passing the paper through
A method for cleaning a recording device, comprising:
The first adhesive facing the roller when the sheet passes through the paper path
Surface, not facing the roller and smaller than the first adhesive surface
And a second adhesive surface having a high adhesiveness.
ing.

[0008]

According to the present invention, a cleaning sheet is provided in a paper passage.
When the sheet is passed, the cleaning sheet facing the roller
The first adhesive surface removes paper dust and the like adhering to the rollers.
Left .

[0009]

Embodiments of the present invention will be described below with reference to the drawings.

In FIG. 1, a feeding roller 3 rotatable in the direction of the arrow is supported by a spindle 5 on a main body 2 of the recording apparatus 1. The feeding roller 3 is made of rubber or the like. It comprises a half-moon roller 3a having a friction member and a guide roller 3b.

A sheet S is loaded on the sheet loading table 6. The sheet loading table 6 is urged upward by a pressure spring 11 disposed between the spring receiver 9 and the sheet loading table 6, and the uppermost sheet S is urged by the urging force. The feed roller 3 is pressurized. In addition, the sheet
A cleaning sheet CS is arranged at a position of a predetermined number of sheets S.

A support member 12 is further fixed to the frame 7 to which the spring receiver 9 is fixed, and a pad holder 13 is mounted on the support member 12 so as to be vertically movable. It is retained by the claw 13a. A separation pad 15 made of a friction member such as rubber is mounted on an upper portion of the pad holder 13.
Is pressed against the feeding roller 3 by a pressure spring 16 disposed in a hole provided in the pad holder 13.

A guide plate 20 for guiding the fed sheet S to a printing unit (not shown) in the apparatus main body 2 is provided downstream of the separation pad 15. This guide plate 20
A paper feed roller 22 rotatably supported in the direction of the arrow by a support shaft 21 is disposed at an intermediate portion of the paper feed roller 22. The paper feed roller 22 is made of a friction member such as rubber, and The upper peripheral surface extends upward from a hole provided in the guide plate 20.

A pinch roller 23 supported by a free end of a pinch roller holder 27 is pressed against the paper feed roller 22. The pinch roller holder 27 has a base portion rotatably supported by a support shaft 26 and a compression spring 29.
The pinch roller 23 is pressed against the paper feed roller 22 by the elastic force of the compression spring 29.

The above-mentioned paper feed roller 22 and pinch roller 2
3, a transport roller pair 25 for transporting the fed sheet S to a printing unit (not shown) is formed. The above feeding roll
, Separation pad 15, transfer roller pair 25, etc.
A sheet transport system is configured, and the sheet transport system components and the guide plate 20 form a paper passage 10 through which the sheet S is passed.

With the above configuration, a start key (not shown) is provided.
Is pressed and a feed signal is sent to the drive system (not shown) of the feed roller 3, the feed roller 3 rotates in the direction of the arrow, and the sheet on the sheet loading table 6 is rotated. Send out S. If a plurality of sheets S are sent, the separation pad 15
The sheet is separated one by one and fed to the pair of transport rollers 25, and further transported by the pair of transport rollers 25 to a printing unit (not shown) to print an image.

Since the feeding roller 3 as a sheet transporting system component requires a particularly large frictional action, it is made of rubber having a high friction coefficient, so that the paper powder of the sheet S adheres. It is easier to do. In particular, when using a sheet coated with a back coat material or the like for holding down the curl of the sheet S, the paper dust is very easy to fall.

For this reason, as many sheets S are passed through the paper path 10, the above-mentioned sheet transport system, ie, the feed roller 3, the separation pad 15, the paper feed Paper powder or the like gradually adheres to rubber parts such as the roller 22 and the like, so that proper sheet conveyance cannot be performed due to a decrease in friction coefficient, which hinders printing and shortens the product life. .

Therefore, in this embodiment, every time a predetermined number of sheets S are passed through the paper path 10, the cleaning sheet CS shown in FIG. By passing the paper through the road, paper dust and the like adhering to the sheet transport system, particularly the feed roller 3 are removed. As shown in FIG. 2, the cleaning sheet CS has a width per unit area (first portion) within a region 40a (first portion) having the same or slightly wider width (within 10 mm) than the width of the feeding roller 3. The adhesiveness is configured to be stronger than the adhesiveness per unit area in the other remaining region 40b (second portion). In order to make a difference in adhesiveness in this way, more semi-adhesive material 50 is required in the area 40a than in the area 40b.
Or by applying a chemical that becomes tacky when the temperature exceeds a certain level.

Using this cleaning sheet CS,
By cleaning the transport system parts,
The roller 3, the separation pad 15, and the paper feed roller 22 are always kept clean to prevent poor paper feeding and poor conveyance due to a decrease in friction coefficient, thereby enabling high quality printing and extending the product life. be able to. Further, since the adhesiveness of the cleaning sheet to the feeding roller 3 to which the paper dust of the sheet S is particularly likely to adhere is increased, the cleaning of the feeding roller 3 is increased.
The cleaning can be performed effectively, and the jam due to the cleaning sheet CS can be prevented.

[0021]

As described above, according to the present invention,
The adhesiveness of the first adhesive surface of the cleaning sheet
Because it is larger than that of the second adhesive surface having
Adhesive force of the first adhesive surface larger than the adhesive surface of
It is possible to reliably remove foreign matter such as paper dust that adheres much in the vicinity.
it can. Also, the second adhesive surface is more adhesive than the first adhesive surface.
Adhesive strength of cleaning sheet
Thus, the possibility that the cleaning sheet adheres to the roller or the like to cause a jam can be reduced.

[Brief description of the drawings]

FIG. 1 is a vertical sectional side view showing a sheet feeding unit of a recording apparatus according to an embodiment of the present invention.

FIG. 2 is a bottom view of a cleaning sheet used in the present invention.

[Explanation of symbols]

 S sheet CS cleaning sheet 1 Recording device 2 Main unit 3 Feeding roller 3a Half moon roller 6 Sheet loading table 10 Paper path 15 Separation pad 22 Paper feed roller 25 Transport roller LA vs. 40a Highly adhesive area 40b Lowly adhesive area 50 Semi-adhesive material

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) G03G 21/10 B65H 5/00-5/38 B65H 7/00-7/20 B65H 43/00-43 / 08 B41J 29/00

Claims (2)

(57) [Claims] 1. A roller for feeding a sheet and a sheet passing the sheet
Used in a recording apparatus having a paper passing path,
Paper dust and the like adhering to the rollers by passing paper in the road
An adhesive cleaning sheet to be removed, the first adhesive sheet facing the roller when passing through the paper passage.
Surface, not facing the roller, and more than the first adhesive surface
Characterized by having a second adhesive surface having low adhesiveness
And cleaning sheet . 2. A roller for feeding a sheet and a sheet passing the sheet
And an adhesive cleaner in the paper passage.
Adhering to the roller by passing the sheet
A cleaning method for a recording device that removes paper dust, etc.
Te, the cleaning sheet, wherein when passing the sheet passing path
A first adhesive surface facing the roller, and a first adhesive surface facing the roller;
And a second adhesive having less adhesiveness than the first adhesive surface
A cleaning device for a recording apparatus, characterized by having an adhesive surface.
Method .