JP2506173B2 - Transport roller - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a transport mechanism of a printer, and in particular, in an impact printer using an ink ribbon, there is no transfer of ink immediately after printing, and there is no step difference in passbooks. The present invention relates to a carrying roller suitable for carrying a medium or multi-part paper with high accuracy.

[Conventional technology]

In Japanese Unexamined Patent Publication No. 60-258051, as a roller for conveying sheets of different sizes and thicknesses, a roller outer peripheral member is a flexible member having no ink adsorbing property, and a space between the roller core metal part is provided. 2 of foamed plastic material with elasticity
A roller having a heavy structure is disclosed.

Further, Japanese Patent Publication No. 56-2089 discloses a roller having a tapered roller shape for feeding a card along one guide surface of a frame.

Further, Japanese Patent Application Laid-Open No. 52-29228 discloses a roller provided with a polyimide resin layer having a low toner adsorbing property on the outer peripheral portion of the roller. Further, Japanese Utility Model Laid-Open No. 62-142072 discloses a roller provided with a polyimide coating on the surface of the roll.

[Problems to be Solved by the Invention]

In the above-mentioned conventional technique, a tape member made of Teflon or vinyl is used as the outer peripheral material, but the specific processing method is not mentioned and there is a problem of feasibility.

In particular, the technique described in JP-A-60-258051 uses a Teflon or vinyl tape member as the outer peripheral material of the foaming plastic material, but does not mention the specific processing method, There was a sex problem. or,
The sponge roller has poor processing accuracy during processing,
Even if it is processed as a straight cylindrical roller, it will have a slight taper, or it will become a Tyco roller, and there is a problem that it will take a very long time to install the device because it needs to be selected or measured before the device is installed. there were.

An object of the present invention is to use a tape having an adhesive applied to one side of a commercially available polyamide-imide film as an outer peripheral material, and a side on which a medium is conveyed along one direction around a cylindrical sponge roller has a large diameter. It is to provide a transport roller that does not transfer ink and transports a medium with high accuracy by winding the tape in a taper shape.

[Means for solving the problem]

In order to achieve the above object, the present invention includes a driving roller that is rotationally driven, and a conveying roller that rotates in accordance with the rotation of the driving roller and that has an elastic body on its rotating surface, and there is a step between the driving roller and the conveying roller. In a transport roller of a passbook transport mechanism that transports a passbook along a transport path by sandwiching and rotating the passbook, the transport roller uses sponge material as the elastic body, and passbooks are provided around the sponge material. It is characterized in that the polyamide-imide film tape is wound in a taper shape so that the diameter of the side to be conveyed along the one side of the conveying path becomes large.

[Action]

As a medium to be handled, if it is an ordinary single-cut sheet (cut paper), it is possible to select a roller such as metal or plastic that does not transfer, but when carrying a medium with a step like a passbook, when passing over the step of the roller Due to the impact force of the sheet, the transport accuracy is reduced, and in the case of a single-cut sheet that is made up of multiple parts for copying, the transport amount does not match between the upper layer and the lower layer due to the ironing of the hard roller, and the transport accuracy is also reduced. To do.

For this reason, in a printer that handles the above-described medium, it is necessary to use an elastic member such as a sponge for the conveyance roller. However, an elastic member generally has good affinity with ink and ink immediately after printing. Tend to adhere to the rollers and cause ink transfer during transport.

Therefore, by winding the polyamide-imide film tape around the sponge roller, it is possible to completely prevent the transfer of the ink without impairing the above-mentioned transport characteristics.

〔Example〕

An embodiment of the present invention will be described below with reference to FIGS. 1 and 2.

In FIG. 1, a medium 3 having a step, such as a passbook, is driven by a drive roller 2.
And a state in which the follower roller 1 is conveyed while being sandwiched by the follower roller 1. Since the follower roller 1 becomes a concave shape following the step shape at the passbook fold step, the impact force is weakened and the conveyance accuracy is deteriorated. It shows a state where it is not allowed.

As shown in FIG. 2, in the present invention, a polyamide imide film tape 4 coated with an adhesive material on one side is wrapped around a sponge 6 around the follower roller, and a terminal portion 7 is formed.
Overlap about 5 mm. The existing polyamide film tape 4 is wound in a taper shape so that the left side has a large diameter in order to convey the medium along the direction of arrow A.

As a result, the roller elasticity during conveyance shown in FIG. 1 is not impaired, and the surface of the polyamide-imide film has a very low affinity for ink, preventing transfer of ink and further increasing the diameter on the left side of the taper. There is an effect that the shape is conveyed along the direction of arrow A.

Further, since the follower roller receives only the pressure at the terminal end portion 7, it does not peel off.

FIG. 3 illustrates an assembling direction when the roller 1 described in FIG. 1 is assembled to the apparatus. FIG. 4 is a cross-sectional view of an apparatus in which the medium carrying roller of the present invention is mounted.

The passbook 3 shown in FIG. 4 is inserted through the insertion slot 12 and the passbook 3
In order to read the information of the magnetic stripe 301 attached to the cover of the, the magnetic stripe 301 is stopped so as to be at the position of the magnetic head 15 that reads the information, the information is read, and the passbook is read based on the read information. 3 is fed to a printing unit including a print head 16 or a carrier 7 for driving the print head 16, a platen 8 and a print ribbon mechanism 10 in order to perform desired printing.

When a desired print spans a plurality of lines and should be printed on the next page beyond the relevant page, or when it is necessary to print on another page of the passbook, the passbook 3 is further provided on the automatic passbook page at the rear of the print. A desired page change is carried out by a command sent to the changing mechanism section 9 and sent from the control circuit 11. After that, the passbook 3 is sent back to the printing unit again, and desired printing is performed on a new page. Of course, the page code (not shown) printed on the passbook is read in advance by the sensor 14 so as to check whether or not the page change is surely performed before printing. There is.

Further, in this passbook printing apparatus, similar to printing on a passbook, desired printing is performed on the slip inserted through the insertion port 24 at the same transaction. At this time, the passbook 3 has an insertion slot.
It will be discharged to the vicinity of 12 (not completely discharged) and it will be in the retracted state. Then, after the desired printing is performed on the slip 4, the slip 4 is discharged to the insertion slot 24 and passed to the operator or the like.

After that, the passbook 3 is inhaled again, and in order to write new information to the magnetic stripe attached to the passbook, it is stopped at the same position as described above, the new information is written, and then it is ejected to the insertion slot 12 and the operator etc. Passed to
Close the transaction.

In this way, the higher the function of the device, the greater the amount of medium and conveyance inside the device, the greater the amount of contact between the medium after printing and the conveyance roller, and the amount of lateral displacement during conveyance. Become.

Therefore, the higher the function of the apparatus, the more effective the apparatus is, in which the polyamide-imide film tape of the present invention is mounted with the roller wound in a taper shape, on the transfer of ink after printing and the lateral deviation during conveyance.

〔The invention's effect〕

ADVANTAGE OF THE INVENTION According to the present invention, it is possible to easily process a transport roller that transports a medium having a step such as a passbook or multi-part paper for copying with high precision and prevents the transfer of an ink ribbon by using a commercially available material. is there.

[Brief description of drawings]

FIG. 1 is an overall side view of an embodiment of the present invention, FIG. 2 is a partial side view of the present invention, and FIG. 3 is a state in which a roller in which a polyamideimide film tape is wound in a taper shape is attached to a device. FIG. 4 and FIG. 4 are cross-sectional views of a passbook printing apparatus showing an embodiment of the present invention. 1 ... Follower roller, 2 ... Drive roller, 3 ... Passbook, 4 ... Polyamideimide tape, 5 ... Core metal, 6 ...
… Sponge, 7 …… End part.

 ─────────────────────────────────────────────────── ─── Continuation of front page (56) References JP-A-61-18652 (JP, A) JP-A-52-29228 (JP, A) JP-A-60-258051 (JP, A) Actual development Sho-62- 142072 (JP, U) Actually opened 60-64937 (JP, U)

Claims (1)

(57) [Claims] 1. A drive roller that is rotationally driven, and a transport roller that rotates in accordance with the rotation of the drive roller and has an elastic surface on its rotating surface. A passbook having a step is sandwiched between the drive roller and the transport roller. A transport roller of a passbook transport mechanism that transports a passbook along a transport path by rotating,
The transport roller uses a sponge material as the elastic body, and the polyamide-imide film tape is tapered so that the diameter of the side on which the passbooks are transported along the one side of the transport path is increased around the sponge material. A conveyance roller configured to be wound around.