JPH0111487Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a ribbon cartridge with an ink roll that has a reinking structure in which a transfer roller is interposed between an endless ink ribbon (hereinafter simply referred to as ribbon) and an ink roll.

In this type of ribbon cartridge with an ink roll, if the amount of ink impregnated in the ink roll falls below a predetermined amount, the print will become blurred and become unusable. was opened and the ink roll was replaced.

However, when the cartridge case is opened, the ribbon stored inside may unexpectedly fly out or the transfer roller loses support and comes off, making it necessary to reassemble the entire inside of the cartridge case. There was a drawback that it had to be done.

SUMMARY OF THE INVENTION An object of the present invention is to solve these drawbacks and provide a ribbon cartridge with an ink roll that allows the ink roll to be easily inserted into and extracted from the case.

In order to achieve this object, the ribbon cartridge with an ink roll of the present invention has an opening for inserting and removing the ink roll formed in the wall of the cartridge case opposite to one end surface of the ink roll, and an opening for inserting and removing the ink roll. A roller is attached to the cartridge case so as to be able to freely approach and separate from the ink roll,
Further, a structure is adopted in which a holding structure is provided for releasably holding the transfer roller at a position apart from the ink roll.

With this configuration, the ink roll is taken out from the cartridge case through the opening without opening the cartridge case, thereby avoiding situations such as the ribbon flying out from the case or the transfer roller losing support. be able to. In addition, the holding structure allows the transfer roller to be releasably held at a position away from the ink roll, so that when a new ink roll is inserted into the case through the opening, the transfer roller will hold the ink roll that is about to be inserted. This eliminates the possibility of the transfer roller coming into contact with the ink roll and interfering with its insertion, and when in use, the transfer roller can be released from such holding and brought into contact with the ink roll.

In other words, a long-life ribbon cartridge with an ink roll is used, which has the advantage that the ink roll can be extremely easily stored in and taken out of the case through the opening, and that ink can be replenished uniformly by the transfer roller. can do.

Next, embodiments of the present invention will be described based on the drawings, but the present invention is not limited to these embodiments.

Note that FIG. 1 is a partially cutaway plan view showing the entire embodiment of the ribbon cartridge with ink roll of the present invention, and FIG. 2 is a partially cutaway plan view showing the main parts of the embodiment shown in FIG. FIG. 3 is a cross-sectional view along the line of FIG. 2, FIG. 4 is a vertical cross-sectional view showing the main parts of another embodiment, and FIGS. 5, 6, and 7 are views of the present invention. It is a top view which shows the holding structure part in yet another Example.

Embodiment 1 (See FIGS. 1, 2, and 3) In the figure, 1 is the body member of the case of the ribbon cartridge, 2 is the lid member, and both are the plurality of parts formed on the lid member 2. The legs 3 of the body member 1 are integrated by fitting into the interlocking holes of the body member 1.

In the space thus formed, there are provided a ribbon storage chamber 5 in which the ribbon 4 is folded in a meandering manner and stored therein, feed rollers 6 and 6', a transfer roller 7, an ink roll 8, and the like.

The transfer roller 7 has both ends of its support shaft 9 connected to elongated holes 10 formed in the body member 1 and the lid member 2, respectively.
and 10', respectively, so that they can be freely disposed near and far from the ink roll 8.

A cylindrical shaft 11 is fitted onto the ink roll 8, and the shaft 11 is rotatably supported on a central shaft 12. One end of the central axis 12 is connected to the lid 1
3, and a male screw portion 14 is formed on the outer periphery of the lid pair 13, and a knob portion 15 is formed on the upper surface.

A large diameter portion 16 for preventing the shaft 11 from being pulled out is formed at the free end of the central shaft 12, and
The free end of the central shaft 12 is bifurcated with an appropriate length so that the large diameter portion 16 can be easily penetrated into the shaft 11.

An opening 17 into which the lid 13 is fitted is formed at a portion of the lid member 2 that faces the position where the ink roll 8 is disposed, and an inner circumferential surface of the opening 17 is provided with the male screw portion 14. A female screw portion 18 for screwing is formed.

By configuring in this way, the lid body 13
The lid 13 can be attached to and removed from the lid member 2 by rotating the lid 13 with the knob 15,
Thereby, the ink roll 8 can be taken in and out of the case through the opening 17.

The long hole 10 formed in the lid member 2 has a width L slightly narrower than the diameter of the support shaft 9 at the longitudinally intermediate portion thereof, and is used to form a narrow portion in which the support shaft 9 is shaped like an annular lattice. The protrusions 19 and 19' are the long holes 1
A holding structure is formed by protruding from both sides of 0. The support shaft 9 is moved beyond the protrusions 19 and 19' from the end of the elongated hole 10 near the ink roll 8 (hereinafter referred to as the front end 20) to the end remote from the ink roll 8 (hereinafter referred to as the rear end 21). ), the transfer roller 7 is held at a position away from the ink roll 8.

By holding the transfer roller 7 at the rear end portion 21, the transfer roller 7 can be prevented from coming into contact with the ink roll 8, and the ink roll 8 can be smoothly inserted and removed through the opening 17.

Note that in order to facilitate forced movement between the front end 20 and rear end 21 of the transfer roller 7, the upper end of the support shaft 9 is attached to the surface of the lid member 2 in order to ensure that the fingertip is caught. It is formed to protrude slightly from the top.

Embodiment 2 (See FIG. 4) This embodiment shows another example of a method for removably storing the ink roll 8 in a cartridge case.

Note that in FIG. 4, the parts designated by the same reference numerals as those in FIGS. 1 to 3 are the same as those in the first embodiment, and therefore the description thereof will be omitted.

A central shaft 12 extends integrally with the body member 1, and an annular groove 22 is formed at the free end of the central shaft 12. On the other hand, small protrusions 23 and 23' are formed on the inner surface of the cylindrical shaft 11 to form a small width part that fits into the center shaft 12, and the small protrusions 23 and 23' are fitted into the groove 22. Thereby, the cylindrical shaft 11 is rotatably held on the central shaft 12.

Note that the upper end portion of the cylindrical shaft 11 is extended and configured as a knob portion 15 . Furthermore, no female thread is formed on the inner circumferential surface of the opening 17.

The present invention is of course not limited to the above-mentioned embodiments, and the following other examples can be applied, for example, to the transfer roller holding structure.

As shown in FIG. 5, the rear end 21 of the long hole 10
Ribs 30 and 30' are formed to narrow the width over a range corresponding to , so that the support shaft 9 of the transfer roller 7 can be fitted and held in an interlocking manner.

As shown in FIG. 6, the rear end 21 of the elongated hole 10
A rubber plate 25 in which a notch 24 having a width narrower than the width of the elongated hole 10 and the diameter of the support shaft 9 is formed is fixed to the support shaft 9 so that the support shaft 9 is held by elastic deformation of the rubber plate 25.

As shown in FIG. 7, the rear end 21 of the long hole 10
A channel-shaped rubber plate 25 having integrally formed protrusions 19 and 19' is inserted into the elongated hole 10 so that the protrusions 19 and 19' protrude from both sides of the elongated hole 10 at the boundary between the elongated hole 10 and the front end 20.
The support shaft 9 is fixed around the both ends 20 of the elongated hole 10 by elastic deformation of the protrusions 19 and 19'.
and 21 to provide resistance when moving from one to the other.

Alternatively, the elongated hole 10 may be configured such that the protrusion or rib protrudes from only one of both sides thereof.

[Brief explanation of the drawing]

FIG. 1 is a partially cutaway plan view showing an entire embodiment of the ribbon cartridge with ink roll of the present invention;
Fig. 2 is a partially cutaway plan view showing the main part of the embodiment shown in Fig. 1, Fig. 3 is a sectional view taken along the line - Fig. 2, and Fig. 4 shows the main part of another embodiment. A longitudinal cross-sectional view showing,
FIGS. 5, 6, and 7 are plan views showing holding structure portions in still further embodiments of the present invention, respectively. Main symbols in the drawing: 1... body member, 2... lid member, 4... ribbon, 7... transfer roller, 8... ink roll, 9... spindle, 10, 10'... long hole,
11... Cylindrical shaft, 12... Central shaft, 13...
...Lid body, 17...Opening.

Claims (1)

[Scope of utility model registration request] In a ribbon cartridge with an ink roll in which a transfer roller is interposed between the endless ink ribbon and the ink roll to form a reinking structure, the ink roll can be inserted and removed from the wall of the cartridge case facing one end surface of the ink roll. a holding structure in which the transfer roller is attached to a cartridge case so as to be able to move toward and away from the ink roll, and the transfer roller is releasably held at a position apart from the ink roll; Ribbon cartridge with ink roll.