JPS6013651Y2 - ribbon cartridge - Google Patents

Description

[Detailed Description of the Invention] The present invention performs a ribbon shifting operation by swinging the entire ribbon cartridge around an axis parallel to the ribbon span section formed between the ribbon outlet and inlet of the ribbon cartridge. Regarding printer ribbon cartridges.

In the conventional ribbon cartridge of the above type, latches, leaf springs, etc. are arranged on a plate made of sheet metal, etc., and the ribbon cartridge is fixed to the plate by these.By rotating this plate, the ribbon cartridge can be swung. The ribbon shift is performed by moving the ribbon.

This method has the disadvantage that many parts are required to fix the ribbon cartridge, and a plate is required to attach the parts necessary for fixing these parts, resulting in high costs.

Further, in order to shift the ribbon, a large force is required to move the ribbon cartridge and the plate together, and if this operation is performed electromagnetically, a large electromagnet is required.

Further, the ribbon cartridge is provided with a convex portion or a concave portion, and an external support made of an elastic body disposed on both sides of the ribbon cartridge is provided with a concave portion or a convex portion to engage the convex portion or concave portion of the ribbon cartridge. There has already been proposed a method in which ribbon shifting is performed by swinging a ribbon cartridge around a recessed portion (Japanese Utility Model Publication No. 52-15287).

This is inconvenient because it requires both hands to remove the ribbon cartridge, and if done with one hand, a two-step operation is required.

The present invention aims to obviate the above-mentioned swallowing defects of conventional ribbon cartridges of the first-mentioned type.

Embodiments of the present invention will be described below with reference to the accompanying drawings.

In FIG. 1, a ribbon cartridge 1 constructed according to the present invention is attached to a fixed support 2, which attachment will be described in detail later.

A ribbon span section is formed between the outlet and the inlet of the ribbon 3 of the ribbon cartridge 1, and a platen 4 is located adjacent to the ribbon span section, and the platen 4 is positioned with respect to the ribbon 3.
A printing wheel 5 and a hammer 6 are arranged opposite to each other.

7 is printing paper. The ribbon cartridge 1, printing wheel 5, and hammer 6 are carried by a printing head and are movable in the axial direction of the platen 4.

These are well known in the art and therefore will not be described in detail here.

In FIGS. 1 to 3, the ribbon cartridge 1 is
An elastic piece 8 is provided to protrude from the bottom wall IA along both side walls, and an elastic piece 8 has a protruding portion on the outer free end of the elastic piece 8, which is parallel to the ribbon span portion and on an axis that is the center of swing of the ribbon cartridge. 9 is provided.

On the other hand, as shown in FIG. 4, the support portion 2 is provided with a hole 10 into which the protrusion 9 is rotatably engaged.

Reference numeral 2A denotes an inclined portion that serves as a guide for the protruding portion 9 when the ribbon cartridge 1 is mounted on the support portion.

The cartridge 1 can be held by pressing both elastic pieces 8 with one hand, and brought between the supporting parts 2 in this state.

When the protruding parts 9 of both elastic pieces 8 reach the positions of the holes 10 of the support part 2, if the user releases his/her hand, each protrusion part 9 enters the hole 10 of the corresponding support part, and the mounting of the cartridge 1 is completed.

When taking out the cartridge, if the cartridge 1 is held again with one hand while pressing both elastic pieces 8, the protruding part 9 will be disengaged from the hole 10 of the support part, and the cartridge can therefore be taken out upward.

In FIG. 5, a hole 11 is provided at the tip of the elastic piece 8, and a protrusion 12 to be engaged with the hole 11 is provided on the support portion 2.

It is convenient to provide an inclined portion 12A on the upper side of the tip of the protruding portion 12 to facilitate mounting of the cartridge 1.

Other points are the same as the embodiment shown in FIGS. 1 to 4.

As mentioned above, the cartridge of the present invention does not require any parts to fix it, so it is inexpensive, and the cartridge can be installed and removed with a single operation with one hand, making it easy to handle. .

[Brief explanation of drawings]

FIG. 1 is a schematic plan view of a printing unit of a serial printer equipped with a cartridge according to the present invention, and FIG. 2 is a side view thereof.
FIG. 3 is a perspective view showing the main parts of the present invention, FIG. 4 is a perspective view of a support portion, and FIG. 5 is a perspective view showing another embodiment of the present invention. 1... Cartridge, 8... Elastic piece, 9...
...Protrusion, 11...hole.

Claims (1)

[Scope of utility model registration request] In a ribbon cartridge such as a printer that performs a ribbon shift operation by swinging the entire ribbon cartridge around an axis parallel to a ribbon span section formed between a ribbon outlet and an inlet of the ribbon cartridge, An elastic piece is provided that extends from the bottom wall of the ribbon cartridge facing the span part along both side walls of the cartridge adjacent to the ribbon span part to the force of the ribbon span part, and this elastic piece has a convex part that becomes the center of swing of the ribbon cartridge Or a ribbon cartridge characterized by forming a recess.