JPH04351581A - Ink feeder - Google Patents

Abstract

PURPOSE:To provide an ink feeder capable of transfer ink to an ink ribbon while maintaining load given to a transfer roller from an ink impregnated body at a small value. CONSTITUTION:The first ink impregnated body 2 brought into contact with a transfer roller 4 and the impregnated body 3 are installed independently, the second ink impregnated body 3 is compressed by a pressing body 8 and the second ink first ink impregnated body 2 is supplied with the ink, and the first ink impregnated body 2 is fixed by a fixing section 6 or the pressing body 8 is returned and the second ink impregnated body 3 is expanded, thus reducing load given to the transfer roller 4 from the first ink impregnated body 2.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an ink supply device for supplying ink to an ink ribbon in a printing device such as a printer or typewriter.

0002

2. Description of the Related Art Conventionally, as described in Japanese Patent Publication No. 63-40676, a transfer roller is brought into contact with an ink-impregnated body, a long ink ribbon is brought into contact with the transfer roller, and the ink-impregnated body is brought into contact with a transfer roller. The impregnated ink is transferred to the ink ribbon via a transfer roller, and when the ink impregnation capacity of the ink-impregnated body becomes low, the ink ribbon is pressed against the transfer roller by a leaf spring, and the ink-impregnated body and the transfer roller are pressed into contact. There is an invention in which a necessary amount of ink is transferred to an ink ribbon by increasing the force.

0003

[Problems to be Solved by the Invention] The transfer roller rotates only by the frictional force with the running ink ribbon.
In the invention described in Publication No. 40676, since the transfer roller is pressed against the ink-impregnated body by a plate spring, the load on the transfer roller becomes large, and the transfer roller stops rotating and the ink is not transferred to the ink ribbon. There is a problem where it disappears. Some ink-impregnated bodies are formed in the shape of a roller and follow the rotation due to friction with the transfer roller, but when a block-shaped ink-impregnated body that does not rotate is used, the load on the transfer roller tends to be even greater. strong.

0004

[Means for Solving the Problems] The invention as claimed in claim 1 is characterized by a transfer roller that contacts the ink ribbon with its axis parallel to the width direction of the ink ribbon, and a porous elastic member impregnated with ink. a first ink-impregnated body whose tip end surface is in contact with the transfer roller; and a second ink-impregnated body formed of a porous elastic member and impregnated with ink and disposed opposite to the back surface of the first ink-impregnated body. An ink-impregnated body, a pressure body provided in contact with the back surface of the second ink-impregnated body so as to be freely displaceable toward the first ink-impregnated body, and fixing the first ink-impregnated body. It consists of a fixed part.

[0005] According to a second aspect of the invention, there is provided a transfer roller that contacts the ink ribbon with its axis parallel to the width direction of the ink ribbon, and a porous elastic member that is impregnated with ink and whose tip end surface is in contact with the ink ribbon. A first ink-impregnated body in contact with a roller, a net provided opposite to the back surface of the first ink-impregnated body, and a porous elastic member impregnated with ink and facing the net. The second ink-impregnated body is arranged, and a pressure body is disposed in contact with the back surface of the second ink-impregnated body and is movable toward the first ink-impregnated body.

[0006] According to the third aspect of the invention, there is provided a transfer roller that contacts the ink ribbon with its axis parallel to the width direction of the ink ribbon, and a porous elastic member that is impregnated with ink and has a tip surface that is in contact with the ink ribbon. an ink-impregnated body that is in contact with the roller; a pressure body that is in contact with the back surface of the ink-impregnated body and is displaceable toward the transfer roller; and an ink-impregnated body that is located at a pressing position. The present invention includes an engaging portion that is engaged, and a fixing portion that supports a portion of the ink-impregnated body on the transfer roller side.

[0007]

[Operation] The invention of claim 1 transfers the ink impregnated into the first ink-impregnated body to the ink ribbon via the transfer roller, but when the ink impregnation capacity of the first ink-impregnated body decreases, In this method, the pressurizing body is displaced toward the first ink-impregnated body to compress the second ink-impregnated body, thereby pushing out the ink in the second ink-impregnated body and supplying it to the first ink-impregnated body. Can be done. Furthermore, since the first ink-impregnated body is fixed by the fixing portion, even when it is pressed by the second ink-impregnated body, the first ink-impregnated body does not press the transfer roller with strong pressure, and further, Since the second ink-impregnated body is released from the compressed state when the external force is removed from the pressure body, the load applied from the first ink-impregnated body to the transfer roller can be maintained at a small value.

According to the second aspect of the invention, when the ink impregnation capacity of the first ink-impregnated body becomes small, the pressurizing body is moved toward the first ink-impregnated body and the second ink-impregnated body is moved. By compressing, the ink in the second ink-impregnated body can be supplied to the first ink-impregnated body through the extrusion network. Furthermore, since the second ink-impregnated body is released from the compressed state when the external force is removed from the pressure body, the load applied from the first ink-impregnated body to the transfer roller can be maintained at a small value. Furthermore, since the ink has the property of staying in the mesh due to surface tension, when the second ink-impregnated body expands from a compressed state, the ink in the first ink-impregnated body is absorbed by the second ink-impregnated body. This can be prevented.

According to the third aspect of the invention, when the ink impregnation capacity at the tip of the ink-impregnated body becomes small, the pressurizing body is displaced toward the transfer roller side and engaged with the engaging portion to stop the ink impregnation. By maintaining the body in a compressed state, ink in the center of the ink-impregnated body can be transferred to the transfer roller side. Further, since a portion of the front end surface of the ink-impregnated body is supported by the fixing portion, the load applied from the ink-impregnated body to the transfer roller can be maintained at a small value.

0010

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the invention according to claim 1 will be explained based on FIG. Reference numeral 1 denotes a box-shaped case, and the case 1 houses a first ink-impregnated body 2 and a second ink-impregnated body 3, each of which is formed of a porous elastic member. The second ink-impregnated body 3 has a volume several times that of the first ink-impregnated body 2. A protrusion 5 that contacts the transfer roller 4 is integrally formed at the tip of the first ink-impregnated body 2 . Furthermore, a fixing portion 6 is formed in the case 1 to fix the tip end surface of the first ink-impregnated body 2 other than the protrusion 5 . Furthermore, a pressurizing body 8 having a handle 7 is slidably provided at the rear end of the case 1. The transfer roller 4 is pressed against an ink ribbon 9 that is driven by an ink ribbon feeding device (not shown).

In such a configuration, the ink ribbon 9
When the transfer roller 4 is run, the transfer roller 4 rotates due to friction with the ink ribbon 9 and transfers the ink impregnated in the first ink impregnated body 2 to the ink ribbon 9. When the ink impregnation capacity of the first ink-impregnated body 2 decreases, the pressurizing body 8 is displaced toward the first ink-impregnated body 2 to compress the second ink-impregnated body 3. Second ink-impregnated body 3
can be extruded and supplied to the first ink-impregnated body 2. Further, the first ink-impregnated body 2 has a fixing portion 6
Therefore, even when pressed by the second ink-impregnated body 3, the first ink-impregnated body 2 does not press the transfer roller 4 with strong pressure, and furthermore, external force is removed from the pressure body 8. Since the second ink-impregnated body 3 is released from the compressed state, the transfer roller 4 is removed from the first ink-impregnated body 2.
It is possible to maintain the load applied to a small value. As a result, the transfer roller 4 can be rotated smoothly when the ink ribbon 9 is running, and ink can be supplied to the first ink-impregnated body 2 from the second ink-impregnated body 3, so that it can be used for a long period of time. Ink can be stably supplied to the ink ribbon 9 over a long period of time.

Note that when the pressurizing body 8 is released, the second ink-impregnated body 3 is released from the compressed state, but the second ink-impregnated body 3 is separated from the first ink-impregnated body 2. Therefore, the ink impregnated into the first ink-impregnated body 2 is not absorbed by the second ink-impregnated body 3 at this time. Further, in order to prevent the pressure from acting on the transfer roller 4 when the second ink-impregnated body 3 is compressed, a part of the front end surface of the first ink-impregnated body 2 is supported by the fixing part 6. , a rib for fixing the edge of the back surface of the first ink-impregnated body 2 may be provided in the case 1 as a fixing part. In this case, the pressure generated by compressing the second ink-impregnated body 3 can be received by the ribs.

Next, an embodiment of the invention of claim 2 is shown in FIG.
The explanation will be based on. Components that are the same as those in the embodiment described above are designated by the same reference numerals, and description thereof will be omitted (the same applies hereinafter). A net 10 is fixed to the case 1 and is located between the back surface of the first ink-impregnated body 2 and the front end surface of the second ink-impregnated body 3.

In such a configuration, when the ink impregnation capacity of the first ink-impregnated body 2 becomes small, the pressurizing body 8 is displaced toward the first ink-impregnated body 2 and the second ink-impregnated body 2 is filled with the ink. By compressing the impregnated body 3, the ink in the second ink-impregnated body 3 can be supplied to the first ink-impregnated body 2 through the extrusion net 10. Further, a part of the front end surface of the first ink-impregnated body 2 is supported by the fixing part 6, and when the second ink-impregnated body 3 is compressed, the pressure is received by the net 10 and the first ink-impregnated body 2 has no effect. Although the present embodiment has been described with the net 10 fixed, even if the net 10 is not fixed, the second ink-impregnated body 3 will be released from the compressed state when you release your hand from the pressurizing body 8. The load applied from the first ink-impregnated body 2 to the transfer roller 4 can be maintained at a small value. At this time, since the ink has the property of catching the eye of the net 10 due to surface tension, when the second ink-impregnated body 3 expands from the compressed state, the ink of the first ink-impregnated body 2 is impregnated with the second ink. It will not be absorbed by Body 3.

Furthermore, an embodiment of the invention according to claim 3 is shown in FIG.
The explanation will be based on. The case 1 houses one ink-impregnated body 11 having a protrusion 5 at its tip. The end surface of this ink-impregnated body 11 other than the protrusion 5 is supported by a fixing part 6. A plurality of engaging portions 12 that are engaged with the pressurizing body 8 are formed on the inner surface of the case 1 .

In such a configuration, the ink-impregnated body 1
When the ink impregnation capacity at the tip of the roller 1 becomes small, the pressurizing body 8 is moved toward the transfer roller 4 side and engaged with the engaging portion 12 to maintain the ink-impregnated body 11 in a compressed state. This allows the ink in the center of the ink-impregnated body 11 to be transferred to the transfer roller 4 side. Further, since a part of the tip surface of the ink-impregnated body 11 is supported by the fixing part 6,
The load applied from the ink-impregnated body 11 to the transfer roller 4 can be maintained at a small value.

[0017] Since a plurality of engaging portions 12 are formed in the case 1, the pressure body 8 can be successively brought closer to the transfer roller 4 side and fixed at any position. As a result, the amount of compression of the ink-impregnated body 11 can be increased in stages according to the decrease in the ink impregnation capacity of the ink-impregnated body 11, and thereby the ink in the center of the ink-impregnated body 11 is gradually transferred to the transfer roller. It can be moved to the 4th side.

[0018]

[Effects of the Invention] The invention according to claim 1 is characterized by a transfer roller that is in contact with the ink ribbon with its axis parallel to the width direction of the ink ribbon, and a porous elastic member that is impregnated with ink and whose tip end surface is formed of a porous elastic member. a first ink-impregnated body that is in contact with the transfer roller; and a second ink-impregnated body that is formed of a porous elastic member and impregnated with ink and is disposed opposite to the back surface of the first ink-impregnated body. , a pressurizing body that is provided in contact with the back surface of the second ink-impregnated body so as to be freely displaceable toward the first ink-impregnated body, and a fixing part that fixes the first ink-impregnated body. With this configuration, the ink impregnated in the first ink-impregnated body is transferred to the ink ribbon via the transfer roller, but if the ink impregnation capacity of the first ink-impregnated body becomes small,
By displacing the pressurizing body toward the first ink-impregnated body and compressing the second ink-impregnated body, the ink in the second ink-impregnated body can be pushed out and supplied to the first ink-impregnated body, Furthermore, since the first ink-impregnated body is fixed by the fixing portion, even when it is pressed by the second ink-impregnated body, the first ink-impregnated body does not press the transfer roller with strong pressure, and further, When the external force is removed from the pressurizing body, the second ink-impregnated body is released from the compressed state, so the load applied from the first ink-impregnated body to the transfer roller can be maintained at a small value. It has effects such as being able to rotate smoothly and stably transfer ink to the ink ribbon.

According to a second aspect of the invention, there is provided a transfer roller that contacts the ink ribbon with its axis parallel to the width direction of the ink ribbon; A first ink-impregnated body in contact with a roller, a net provided opposite to the back surface of the first ink-impregnated body, and a porous elastic member impregnated with ink and facing the net. The second ink-impregnated body is arranged, and the pressure body is provided in contact with the back surface of the second ink-impregnated body so as to be freely displaceable toward the first ink-impregnated body. When the ink impregnation capacity of the first ink-impregnated body becomes small, the pressure body is displaced toward the first ink-impregnated body to compress the second ink-impregnated body, thereby increasing the ink impregnation capacity of the second ink-impregnated body. The ink in the body can be supplied to the first ink-impregnated body through the extrusion net, and when the external force is removed from the pressurizing body, the second ink-impregnated body is released from the compressed state.
The load applied from the first ink-impregnated body to the transfer roller can be maintained at a small value, and furthermore, because the ink has the property of staying in the mesh due to surface tension, the second ink-impregnated body can be released from the compressed state. When it expands, it has the effect of being able to prevent the ink in the first ink-impregnated body from being absorbed by the second ink-impregnated body.

According to the third aspect of the invention, there is provided a transfer roller that contacts the ink ribbon with its axis parallel to the width direction of the ink ribbon, and a porous elastic member that is impregnated with ink and whose tip surface is in contact with the transfer roller. an ink-impregnated body that is in contact with the roller; a pressure body that is in contact with the back surface of the ink-impregnated body and is displaceable toward the transfer roller; and an ink-impregnated body that is located at a pressing position. Since it is constituted by an engaging part that is engaged and a fixed part that supports a part of the ink-impregnated body on the transfer roller side, when the ink impregnation capacity at the tip of the ink-impregnated body becomes small, By displacing the pressure body toward the transfer roller and engaging the engaging portion to maintain the ink-impregnated body in a compressed state, ink in the center of the ink-impregnation body can be transferred to the transfer roller side. Furthermore, since a portion of the front end surface of the ink-impregnated body is supported by the fixing portion, it is possible to maintain the load applied from the ink-impregnated body to the transfer roller at a small value.

[Brief explanation of drawings]

FIG. 1 is a horizontal sectional view showing an embodiment of the invention according to claim 1.

FIG. 2 is a horizontal sectional view showing an embodiment of the invention according to claim 2.

FIG. 3 is a horizontal sectional view showing an embodiment of the invention according to claim 3.

[Explanation of symbols]

2 First ink-impregnated body 3 Second ink-impregnated body 4 Transfer roller 6 Fixed part 8 Pressure body 9 Ink ribbon 10 Net 11 Ink-impregnated body 12 Engagement part

Claims (3)

[Claims] 1. A transfer roller that contacts the ink ribbon with its axis parallel to the width direction of the ink ribbon, and a transfer roller that is formed of a porous elastic member and impregnated with ink, and whose tip surface is in contact with the transfer roller. a first ink-impregnated body; a second ink-impregnated body formed of a porous elastic member and impregnated with ink and disposed opposite to the back surface of the first ink-impregnated body; An ink comprising: a pressurizing body that is in contact with the back surface of the body and is displaceable toward the first ink-impregnated body; and a fixing part that fixes the first ink-impregnated body. Feeding device. 2. A transfer roller that contacts the ink ribbon with its axis parallel to the width direction of the ink ribbon; and a transfer roller that is formed of a porous elastic member and impregnated with ink, and whose tip surface is in contact with the transfer roller. A first ink-impregnated body, a net provided opposite to the back surface of the first ink-impregnated body, and a second ink-impregnated body formed of a porous elastic member and disposed opposite to the net. An ink supply device comprising: an ink-impregnated body; and a pressure body disposed in contact with the back surface of the second ink-impregnated body so as to be freely displaceable toward the first ink-impregnated body. . 3. A transfer roller that contacts the ink ribbon with its axis parallel to the width direction of the ink ribbon; and a transfer roller that is formed of a porous elastic member and is impregnated with ink, and whose tip surface is in contact with the transfer roller. an ink-impregnated body, a pressure body that is in contact with the back surface of the ink-impregnated body and is displaceable toward the transfer roller, and an engagement member that is engaged with the pressure body that is displaced to a pressurizing position. An ink supply device comprising: a joint portion; and a fixing portion that supports a portion of the ink-impregnated body on the transfer roller side.