JP2862411B2 - Recording device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a recording apparatus using a high quality printing sheet.

[0002]

2. Description of the Related Art Conventionally, a recording apparatus that separates and conveys sheets one by one to record an image is a sheet stacking table on which sheets are stacked, and a feeding apparatus that sends out the sheets and includes a half-moon roller and a guide roller. The apparatus includes a roller, a separation pad that presses the fed sheet against a feeding roller to separate the sheets one by one, a pair of conveyance rollers that conveys the separated sheet along a guide plate, and the like. In this recording apparatus, a recording sheet on which a high-quality image is printed by passing a sheet of special paper for high-quality printing through a paper path including the separation pad, the guide plate, the pair of conveying rollers, and the like. Is formed.

[0003]

However, in the above-described conventional recording apparatus, while a large number of sheets of special paper are passed through the sheet-passing section, sheet transport system components of the recording apparatus, particularly, Normally, paper powder gradually adheres to a material such as a separation pad, a feeding roller, a pair of conveying rollers, or the like in which a friction member such as rubber is used as a material. As a result, problems such as poor paper feed, poor conveyance, and double feed eventually frequently occur, hindering image formation of high-quality printing, and shortening the product life. .

Accordingly, the present invention enables high quality printing by cleaning the sheet transport system components in the paper passing unit each time a predetermined number of sheets of special paper for high quality printing are passed through the paper passing unit. It is an object of the present invention to provide a recording device that has been described.

[0005]

According to the present invention, there is provided a feed roller and a separation pad for separating and feeding one by one a printing sheet loaded with a coating material on at least one side thereof, which is loaded on a sheet loading table, and a downstream of the separation pad. A sheet conveying system component including a pair of conveying rollers, and a paper passing path through which the sheet is passed by the sheet conveying system component, wherein a predetermined number of the printing sheets and at least one cleaning sheet A sheet bundle taken out of a pack container in which sheets are stored is stacked on the sheet stacking table, and after the predetermined number of printing sheets have been fed to the paper passage, the cleaning sheet is fed to the sheet stack. The present invention is characterized in that a sheet conveying system component is cleaned.

[0006]

According to the above construction, a sheet bundle having a predetermined number of printing sheets coated on one side with a coating material and at least one cleaning sheet is taken out of the pack container, loaded on a sheet loading table, and fed. A predetermined number of print sheets are fed into the paper path by a sheet transport system component including a roller, a separation pad, and a transport roller pair, and then a cleaning sheet is fed into the paper path to clean the sheet transport system components. I do.

As a result, paper dust adhering to a sheet conveying system component including a feed roller, a separation pad, and a conveying roller pair formed of a friction member is removed by the cleaning sheet, thereby preventing the life of the sheet from being shortened. Can print high-quality images.

[0008]

[0009]

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

In FIG. 1, a feed roller 3 rotatable in the direction of an arrow is supported by a spindle 5 on a main body 2 of the recording apparatus 1, and the feed roller 3 has a friction member such as rubber. It is composed of a half-moon roller 3a and a guide roller 3b.

A sheet Pa made of special paper for high quality printing is stacked on the sheet stacking table 6. The sheet stacking table 6 is urged upward by a pressure spring 11 disposed between the spring receiver 9 and the sheet stacking table 6, and the uppermost sheet Pa is pressed against the feeding roller 3 by the urging force. Have been. A cleaning sheet Pb is arranged at a position of a fixed number of stacked sheets Pa.

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 movable up and down. It is locked. A separation pad 15 made of a friction member such as rubber is mounted on the upper part of the pad holder 13.
The pressure roller 16 is pressed against the feed roller 3 by a pressure spring 16 provided in a hole formed in the pad holder 13.

A guide plate 20 for guiding the fed sheet Pa to a printing unit (not shown) in the apparatus main body 2 is provided downstream of the separation pad 15. This guide plate 2
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, and the paper feed roller 22 is made of a rubber rubber friction member. It extends upward from a hole formed in the guide plate 20.

A pinch roller 23 pivotally supported by a free end of a pinch roller holder 27 is in pressure contact with the paper feed roller 22. The pinch roller holder 27 has its base pivotally supported by a support shaft 26 so as to be rotatable.
The pinch roller 23 is pressed against the paper feed roller 22 by the elastic force of the compression spring 29.

The paper feed roller 22 and the pinch roller 2
3, a transport roller pair 25 configured to transport the fed sheet Pa to a printing unit (not shown). A sheet transport system component is configured by the feed roller 3, the separation pad 15, the transport roller pair 25, and the like. The sheet transport system component and the guide plate 20 form a paper passage 10 through which the sheet Pa passes. It is configured.

With the above arrangement, when a start key (not shown) is pressed and a feed signal is sent to a drive system (not shown) of the feed roller 3, the feed roller 3 rotates in the direction of the arrow to stack sheets. The sheet Pa on the table 6 is sent out. When a plurality of sheets Pa are sent out, the sheets Pa are separated one by one by a separation pad 15 and fed to a pair of conveying rollers 25, and further conveyed to a printing unit (not shown) by the pair of conveying rollers 25 to form an image. Is printed.

The feed roller 3, the separation pad 15, and the paper feed roller 22 of the transport roller pair 25 as the sheet transport system components require a particularly large frictional action, and are made of rubber having a high friction coefficient. Therefore, the paper powder of the sheet Pa easily adheres to these sheet conveying system components. In particular, special paper for high-quality printing has a coating material applied to the paper surface to obtain high-quality printing, and a back coating material to curl the sheet Pa on the back surface of the paper. Therefore, the paper dust is very easy to fall.

As a result, as many sheets Pa are passed through the paper path 10, the above-mentioned sheet transport system components, ie, the feed roller 3, the separation pad 15, and the paper feed roller 22
The paper powder gradually adheres to the rubber parts such as the above, so that it is impossible to carry out a proper sheet due to a decrease in the coefficient of friction, which hinders high quality printing and shortens the product life.

Therefore, in this embodiment, the cleaning sheet Pb is passed through the paper passage 10 every time a fixed number of sheets Pa made of special paper are passed through the paper passage 10. By passing the Pb, the paper dust adhering to the feed roller 3, the separation pad 15, and the paper feed roller 22, which are rubber parts, is removed. By cleaning the sheet transport system components with the cleaning sheet Pb, the feed roller 3, the separation pad 15, and the paper feed roller 22 are always kept clean, and a paper feed failure, a transport failure, and the like due to a decrease in the friction coefficient are prevented, and a high level is achieved. The cleaning sheet Pb can be made of a material having a rough surface such as cotton. In the apparatus according to the present embodiment, the sheet Pa which is a special paper is
When the cleaning sheet Pb containing 5% cotton fiber was passed, it was confirmed that the transport durability of the recording apparatus 1 was three times or more as compared with the conventional apparatus. In addition, since the sheet Pa as the special paper is usually one pack of 100 to 500 sheets, if the cleaning sheet Pb is included in this pack container, the user can pass the fixed number of sheets of the special paper Pa. Can be passed without forgetting the cleaning sheet Pb.

[0020]

As described above, according to the present invention,
After a predetermined number of printing sheets have been fed through the paper path, the cleaning sheet is fed to remove paper dust adhering to the sheet transport system components, thereby keeping the sheet transport system components clean. As a result, defects such as poor feeding, poor conveyance, and skew can be eliminated, and a recording sheet of high quality printing can be realized, and the life of the sheet conveying system components can be prolonged. Further, by setting a sheet bundle taken out of a pack container containing a predetermined number of printing sheets and at least one cleaning sheet, the cleaning operation can be reliably performed without forgetting.

[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.

[Explanation of symbols]

 Pa sheet Pb Cleaning sheet 1 Recording device 2 Main unit 3 Feeding roller 3a Half moon roller 6 Sheet loading table 10 Paper passage 15 Separation pad 20 Guide plate 22 Paper feed roller 23 Pinch roller 25 Transport roller pair

Claims (2)

(57) [Claims] 1. A sheet transporter including a feed roller, a separation pad, and a pair of transport rollers downstream of the separation pad, which separates and sends out, one by one, a printing sheet loaded with a coating material on at least one surface loaded on a sheet loading table. A recording apparatus having a system component and a sheet passing path through which the sheet is passed by the sheet conveying system component, wherein a pack containing a predetermined number of the printing sheets and at least one cleaning sheet is stored A sheet bundle taken out of the container is stacked on the sheet stacking table, and after the predetermined number of printing sheets are fed to the paper passage, the cleaning sheet is fed to clean the sheet transport system components. A recording device, comprising: 2. The recording apparatus according to claim 1, wherein said cleaning sheet comprises a sheet containing cotton fibers.