JPS6014591Y2 - Ribbon cartridge with ink supply device - Google Patents

Description

[Detailed Description of the Invention] The present invention includes a ribbon storage section that stores an ink ribbon, a ribbon drive structure that pulls the ribbon from an external printing section into the ribbon storage section, and an ink structure that replenishes ink to the ribbon. The present invention relates to a ribbon cartridge with an ink replenishing device provided in a case body.

This type of ribbon cartridge with ink supply device
An ink-impregnated body that holds ink to be supplied to the ribbon is
Since the ribbon is in contact with the ribbon even when it is stopped, excessive ink is supplied to the part of the ribbon that is in contact with it when it stops.
There was a drawback that when the ribbon was driven again, the prints smeared on the ribbon where the ink was excessively replenished.

In view of these circumstances, it is an object of the present invention to effectively utilize the driving force of the ink ribbon to bring the ribbon into contact with the ink-impregnated body only when the ribbon is driven.

In order to achieve this object, the present invention has a monolink structure that is provided at the exit side of the ribbon storage section, and includes two fixed ribbon guides adjacent to each other in the exit path, and a gap between the two fixed ribbon guides. a movable ribbon guide that is attached to the case body so as to be movable toward and near the imaginary straight line connecting the fixed guides, and a ribbon is wound between the fixed guides, and a biasing force is applied to the movable ribbon guide in a direction away from the imaginary straight line. The present invention employs a configuration comprising a spring and an ink-impregnated body held at a position where the ribbon held by the moving guide comes into close contact with the moving guide as it approaches the virtual straight line.

With this configuration, the tension applied by driving the ribbon causes the movable guide to move against the biasing force of the spring, and the meandering path of the ribbon formed by the fixed guide and the movable guide is It will be transformed.

Since the arrangement of the ink-impregnated body is set as described above, the ink ribbon comes into contact with this ink-impregnated body due to the deformation of the ribbon path.

Conversely, when the drive of the ink ribbon is stopped, the moving guide moves in a direction away from the virtual straight line due to the urging force of the spring, and the ribbon moves away from the ink-impregnated body.

In other words, unlike conventional ink ribbon cassettes, the moving path of the ink ribbon is not constant, but in the present invention, the ribbon path is changed by driving and stopping the ribbon, and the changes in the ribbon path are changed as described above. By arranging the ink-impregnated body in this way, we have achieved effective utilization.

Next, the present invention will be explained based on the drawings.

1 and 2 are schematic cross-sectional plan views showing one embodiment of the ribbon cartridge of the present invention, in which FIG. 1 shows the ribbon at rest, and FIG. 2 shows the ribbon being driven. This indicates the state of being.

In FIGS. 1 and 2, 1 is a case body, an external path C between an exit path B and an inlet path A is a printing section, and an endless ink ribbon is provided in an internal space between both paths A and 8. A ribbon storage section is provided in which the ribbon 2 is folded into a meandering shape and stored.

On the entrance path A side of the ribbon storage section, a ribbon drive structure E is provided which drives the ribbon 2 while holding it between two rolls 3 and 4 and feeds the ribbon into the ribbon storage section.

Further, on the exit path B side of the ribbon storage section, a reinking structure F having the following configuration is provided.

Reference numeral 6 denotes a first portion which is the proximal end portion of the inner wall that constitutes the exit path B.
Fixed ribbon guide.

Reference numeral 7 denotes a second fixed ribbon guide disposed inside the case main body 1 than the first fixed guide 6, and its rolled main body is rotatably supported on a shaft 12 attached to the case main body 1. has been done.

Reference numeral 8 denotes a movable ribbon guide, and its roll-shaped main body is supported at one end of a dogleg-shaped lever 9, which is pivotably supported at the center by the shaft 12.

A spring 11 is stretched between the lever 9 and the case body 1 in order to bias the moving guide 8 in a direction away from the virtual straight line X connecting the fixed guides 6.7. .

Further, the ribbon between the fixed guides 6 and 7 is wound around the movable guide 8, forming a dogleg-shaped path.

Reference numeral 5 denotes an ink-impregnated body, which is a roll-shaped porous member impregnated with liquid ink, and is located outside the ribbon path between the first fixed guide 6 and the movable guide 8; The second fixed guide 7 is located on the opposite side of the ribbon path with respect to the second fixed guide 7.

Reference numeral 10 denotes a brake piece provided at the other end of the lever 9, which uses the urging force of the spring 11 to push the ribbon closer to the ribbon storage section than the second fixed guide 7 to the side wall of the case body 1. It is designed to work together with the ribbon to clamp it and prevent the ribbon from being pulled out unexpectedly.

With the above arrangement, when the ribbon stops, the first
As shown in the figure, the moving guide 8 is located away from the virtual straight line X due to the biasing force of the spring, and the ink-impregnated body 5 and the moving guide 8 are located apart from each other. ing.

Therefore, the ink in the ink-impregnated body 5 is not replenished to the ribbon 2, and no excessive ink supply points occur on the ribbon.

Further, when the ribbon 2 is driven by the ribbon drive structure E, the lever 9 swings against the urging force of the spring 11, so that the moving guide 8 approaches the ink-impregnated body 5. As shown in FIG. 2, the ribbon wound around the ink-impregnated body 5 is brought into pressure contact with the ink-impregnated body 5 to supply ink to the ribbon.

By automatically performing such operations as the ribbon is driven and stopped, it is now possible to replenish the ribbon with an appropriate amount of ink.

Although the ribbon cartridge ink replenishing device of the present invention has been described above based on specific embodiments, the present invention is not limited to these embodiments only, and various changes can be made without departing from the spirit thereof. It's watery.

[Brief explanation of the drawing]

1 and 2 are schematic cross-sectional plan views showing one embodiment of the ribbon cartridge of the present invention, in which FIG. 1 shows a state in which the ribbon is stopped, and FIG. 2 shows a state in which the ribbon is being driven. This shows that. Main symbols in the drawing, 1... Case body, 2...
... Endless ink ribbon, 5 ... Ink-impregnated body, 6 ... First fixed ribbon guide, 7 ...
...Second fixed ribbon guide, 8...Movable ribbon guide, 9...Lever, 10...
Brake piece, 11...Spring, 12...
...Axis, A...Entrance route, B...Exit route, C...Print section, D...Ribbon storage section, E... ...Ribbon drive structure, F...
・Reink structure.

Claims (1)

[Scope of utility model registration request] An ink replenishing device comprising a ribbon storage section for storing an ink ribbon, a ribbon drive structure for drawing the ribbon from an external printing section into the ribbon storage section, and an ink structure for replenishing the ribbon with ink, provided in a case body. The re-inking structure is provided on the exit side of the ribbon storage section, and the re-inking structure is provided with respect to two fixed ribbon guides adjacent to each other in the exit path and an imaginary straight line connecting the two fixed guides. attached to the case body so that it can be viewed from a distance,
and a movable ribbon guide around which a ribbon is wound between the two fixed guides, a spring that applies a biasing force to the movable ribbon guide in a direction away from the virtual straight line, and a ribbon held by the movable guide. A ribbon cartridge with an ink replenishing device comprising an ink-impregnated body held in a position where the guide approaches the virtual straight line and comes into close contact with the guide.