JP2924229B2 - Printing 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 printing mechanism for a printing apparatus having a printing wheel in which a printing sheet or printing belt formed of a rubber material or an elastic resin material is wound on a cylindrical base. About.

[0002]

2. Description of the Related Art Conventionally, in a printing mechanism of a printing apparatus having the above-mentioned type ring, as shown in FIG. 4, when printing is stopped and when printing is waited, an inking roller 5 is stopped on a pressing plate 3; Ink is prevented from flowing out of the roller 5 due to unnecessary contact between the inking roller 5 and the type sheet or the type belt 2, and recording paper is inserted into the printing apparatus and fed in the same state. Therefore, the printed characters 2a face the printing surface of the platen 8, and when the recording paper 10 is inserted,
If the leading edge of the paper, the folded shape, the wrinkles, etc., cause contact with the type 2a at the recording paper guide opening 9a or an abnormal load on the type 2a due to jamming during paper feeding,
Guide hole 1 for type cut and type foot provided on base 1
When the character foot 2b separates from the character a, the character may be floated and printing may not be possible.

[0003] In addition to the above-described malfunction, the paper slack when the recording paper 10 is inserted easily causes contact dirt between the printed characters 2a.

[0004]

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to solve the above-mentioned problems, and an object thereof is to improve the operability and reliability of a printing mechanism.

[0005]

In order to solve the above-mentioned problems, a printing apparatus according to the present invention comprises a printing sheet or printing belt formed of a rubber material or an elastic resin material and a printing sheet or printing belt. A character ring formed by being wound into a cylindrical shape, and a rotation control for stopping a desired character of the character ring at a printing position.
Press the type on the type sheet or type belt and type
Roller for inking to transfer ink to
The printing side of the recording paper is regulated by the side,
An opening is formed in the printing area where printing is performed
The fixed recording paper guide and the end of winding of the type sheet or type belt are fixedly installed on the base .
Contact the inking roller at both ends outside the printing area
Presser plate with protrusions and paper feed for transporting recording paper
The print wheel conveys recording paper by a paper feed mechanism.
When feeding, the presser plate is stopped facing the print position.
It is characterized by that.

[0006]

[0007]

According to the above-mentioned means, when the recording paper is inserted into the printing device and when the paper is fed, the press plate is in a standby state facing the printing position , and the contact between the recording paper and the print is avoided.

Further, since the presser plate and the inking roller are always kept in a non-contact state in a printing area where the presser plate may come into contact with the recording paper, the presser plate and the recording paper may not be in contact with each other. No contact dirt.

[0009]

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

In the printing apparatus, the paper feed and the printing wheel are driven by respective motors.

FIG. 1 shows a state in which printing is stopped and a state in which printing is waited. A print sheet or print belt 2 is wound around the base 1, and a pressing plate 3 for the seat or belt 2 is fixedly installed on the base 1 on the winding start and end. A type wheel composed of parts can be independently controlled for rotation for type selection. The inking roller 5 is in contact with the sheet or belt 2 by a certain pressure by the inking roller spring 4. At this time, the type wheel rotates and controls the roller 5 so that the roller 5 stands on the pressing plate 3. Have been. Base 1
A print drive electromagnet 7 having a print hammer 6 is provided inside. A platen 8 and a recording paper guide 9 are provided in front of the printing hammer 6 in the operation direction, and a recording paper 10 is passed between the platen 8 and the recording paper guide 9.
The recording paper 10 is moved by a paper feed mechanism (not shown).
Line feed can be performed every line or continuously as needed. During the printing operation, the rotation of the base 1 in the direction of arrow A is controlled.
Rotates in the direction of arrow B, and transfers the ink to the surface of the type 2a arranged on the sheet or the belt 2. The selected character 2a is stopped in front of the printing hammer 6 in the operating direction, and when the printing driving electromagnet 7 is energized, the suction plate 6a provided on the printing hammer 6 is sucked by the driving iron core 7a to be printed. The hammer 6 is operated in the direction of arrow C. The printing hammer 6 performs printing by pressing the printed characters 2 a against the recording paper 10 on the platen 8 by pressing the printed characters 2 b passed through the printed holes 1 a provided on the base 1. .

Therefore, as an embodiment of the present invention, when inserting paper and feeding paper, the type wheel is controlled to rotate as shown in FIG. 3, and the presser plate 3 is stopped at the position of the platen 8 facing the printing surface. By doing so, contact between the recording paper 10 and the printed characters 2a at the recording paper guide opening 9a can be avoided. Further, as shown in FIG. 2, the inking roller 5 is provided with the holding plate 3 or the holding plate 3.
The ink is not transferred to the printing area range L on the upper surface of the holding plate 3 since the ink is guided by the projection 3a provided on the base 1 at the fixing position of The contact dirt with the holding plate 3 due to the slack is eliminated.

The presser plate may be used as a standby plate for an inking roller, or as a recording paper, if the presser plate does not have any meaning as an original presser plate depending on the end processing of winding the base and the sheet or belt. It is set as a contact avoidance plate between the print and the recording paper at the time of insertion and paper feeding.

[0014]

According to the printing mechanism of the present invention, when a character sheet or a character belt formed of a rubber material or an elastic resin material is wound on a cylindrical base, the sheet or belt is wound. A holding plate made of resin or metal is fixedly installed on the base on the beginning and end, and the holding plate faces the printing surface of the platen when inserting the recording paper into the printing device and feeding the paper. Let it be. The press plate is provided with a projection outside the printing area of the type sheet or the type belt, and the inking roller is guided by the projection, so that the printing area of the press plate and the inking roller are in a non-contact state. It is characterized by being kept. As described above, according to the present invention, when recording paper is inserted and paper is fed, contact between the paper and the type is avoided at the time of paper jamming or the like. Further, the effect of improving the operability and reliability of the printing mechanism can be obtained, for example, the ink stain on the paper due to the slack in the recording paper insertion operation is eliminated.

[Brief description of the drawings]

FIG. 1 is a schematic side view of a mechanism showing a print stop state and a print standby state in one embodiment of the present invention.

FIG. 2 is a schematic side view around a presser plate in one embodiment of the present invention.

FIG. 3 is a schematic side view showing a mechanism during paper insertion and paper feeding according to the embodiment of the present invention.

FIG. 4 is a schematic side view showing an example of a conventional technique.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 base 1a guide hole for type foot 2 type sheet or type belt 2a type 2b type foot 3 holding plate 3a protrusion 4 inking roller spring 5 inking roller 6 printing hammer 6a suction plate 7 printing drive electromagnet 7a drive iron 8 Platen 9 Recording paper guide 9a Recording paper guide opening 10 Recording paper

Claims (1)

(57) [Claims] 1. A type sheet or type belt formed of a rubber material or an elastic resin material, a type wheel formed by winding the type sheet or the type belt in a cylindrical shape on a base, and the type type Rotation control that stops the desired type of wheel at the printing position
Control unit and press the type of the type sheet or the type belt
An inking roller for transferring ink to the typeface, and regulating the printing surface of the recording paper near the printing position;
Printing is performed when the printed characters come into contact with the recording paper.
A recording paper guide having an opening in the printing region, there is to fix installed MakiSotsui starting end of the print sheet or the printing type belt to the base, the said character ring
Contact the inking roller at both ends outside the printing area.
A press plate provided with a protruding portion that comes into contact with the recording sheet; and a paper feed mechanism that conveys the recording paper.
When the presser plate is stopped facing the printing position
A printing device, characterized in that: