JPS61160272A - Thermal transfer ink ribbon cassette - Google Patents

Abstract

PURPOSE:To easily discharge the charge in a thermal transfer ink ribbon cassette to the outside and to prevent the charging of said ink ribbon cassette, by forming a cassette case and a cassette lid from an electric conductive material. CONSTITUTION:A cassette case 2 and a cassette lid 3 are formed of an electric conductive material. As the electric conductive material, a proper material such as conductive plastic or a metal can be selected. When an ink ribbon cassette 1 is mounted on the carriage 8 of a thermal transfer recording apparatus and printing is performed, static electricity is generated in the cassette 1 by the friction between a thermal printing head and an ink ribbon 6 or the friction between the cassette case 2 and reels 4, 5 and said cassette 1 is ready to come to a high voltage charged state but, because the cassette case 2 and the cassette lid 3 are formed of the electric conductive material, the charge in the cassette 1 is easily discharged to the outside through the cassette case 2 and the cassette lid 3 and the charging of the cassette can be effectively prevented.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field] The present invention relates to the structure of a 15-ink ink cassette for thermal transfer.

[Prior art]

The ink ribbon cassette for thermal transfer is a thermal transfer recording device (
used for faxes, faxes, etc.) This thermal transfer recording apparatus is configured to carry an ink ribbon carriage on a carriage that moves along the paper, and perform thermal transfer recording while feeding the ink ribbon between the thermal print head and the paper.

The ink ribbon cassette is provided with a supply reel and a take-up reel inside the cassette case, and during printing operation, the ink ribbon cassette is provided with a supply reel and a take-up reel. It has a structure in which the print head passes through the thermal print head insertion part and is wound onto the take-up reel. The winding p+)-wheel is rotationally driven by a drive shaft provided on the carriage. Further, the cassette case is closed by attaching a cassette lid.

Incidentally, the cassette case and the cassette lid are generally made of a non-conductive material such as silanac, and during the printing operation, the cassette, ink ribbon, etc. become charged due to the following reasons.

1) Friction between the thermal print head and the ink cartridge 11) Friction between the cassette case and each reel
Friction between the cassette case and the ink ribbon lv) Process of transferring ink to paper ■) Process of peeling off the ink ribbon from the supply reel These problems cause the following problems.

1) The user touches the cassette and feels it.

11) Due to the charging of the cassette, data signals and operation signals from the CPU may be disturbed, causing the device to malfunction or stop.

1!1) Electronic elements such as the CPU may be damaged due to charging of the cassette.

Therefore, in order to eliminate this charging problem, conventionally,
Various countermeasures have been proposed.

First, there is a method to dissipate the charge by providing a static elimination brush. However, this method has problems with appearance processing, and
As the equipment becomes larger, the cost also increases.

Another method is to add a ground wire, capacitor, or shield plate to the control circuit for electrical processing. However, this method also requires a complicated and large circuit configuration, which increases costs.

〔the purpose〕

An object of the present invention is to solve the above-mentioned conventional problems and to prevent charging of an ink ribbon cassette for thermal transfer using a simple and inexpensive method.

〔overview〕

The present invention achieves the above object by forming the cassette case and the cassette lid from a conductive material.

〔Example〕

The present invention will be described in detail below with reference to the drawings.

FIGS. 1 and 2 show an embodiment of an inklidene cassette for thermal transfer according to the present invention.

1 and 2, an Increden cassette 1 for thermal transfer has a housing consisting of a cassette case 2 and a cassette lid 3, and inside the cassette case 1 is a supply reel 4.
and a take-up reel 5 are pivotally supported and are configured to take up the ink ribbon 6 on the supply reel onto the take-up reel 5. A recess 7 for inserting a normal print head is formed on the front side of the cassette case 2, and the incretin 6 is guided to pass through the recess.

When cassette 1 is installed on carriage 8, does it go up on the carriage? When the winding drive shaft 9 engages with the take-up reel 5, the thermal print head is inserted into the recess 7, and the winding 1)
By driving the reel 6, the cylinder 6 travels through the recess 7 from above the supply reel 4 and is wound onto the take-up reel 5.

Note that a hole 10 is formed in the cassette lid 3 for inserting a loosening stopper to prevent the lid from loosening during transportation of the cassette.

However, the cassette case 2 and the cassette lid 3 are made of conductive material.

As this conductive material, an appropriate material such as conductive plastic or metal can be selected.
The cassette case 2 and the cassette lid 3 can be formed by die-casting or pressing molded products of mixed conductive plastic or aluminum.

Transfer the Increden cassette 1 to the carriage 8 of the thermal transfer recording device.
When printing by attaching it to the
Static electricity is generated due to the above-mentioned causes such as friction between the cassette case 2 and the cassette lid 3, and the inside of the cassette 1 tends to become charged at high voltage.
was made of the conductive material as described above, so the cassette) 1
The charges inside the cassette can be easily discharged to the outside through these, and the charging of the cassette can be effectively prevented.

Therefore, it is possible to eliminate problems caused by charging of the cassette 1, such as electric shock to the user, malfunction of the recording device due to disturbance of the 'fIL signal, and damage to electronic elements such as the CPU. I can do it.

〔effect〕

As is clear from the above description, according to the present invention, since the cassette case and the cassette lid are made of a conductive material, the electric charge inside the cassette can be easily discharged to the outside, and therefore the inklitin cassette for thermal transfer can be easily discharged. Charging can be effectively prevented.

[Brief explanation of drawings]

FIG. 1 is a perspective view showing an embodiment of the thermal transfer ink ink cassette according to the present invention with the cassette lid separated, and FIG. 2 is a vertical sectional view of the central portion of FIG. 1. 110・-increment) Genka hit. 2 leprosy@O...cassette case. 3...-Cassette lid. Edict for drawings (no change in content) Figure 1 Figure 2 Method for writing procedural amendments) % formula % 2. Title of invention Ink ribbon cassette for thermal transfer 3. Relationship with the person making the amendment Patent applicant address Tokyo 3-30-2 Shimomaruko, Ota-ku Name (100) Canon Co., Ltd. Representative Ryu Kaku Sanbe 4, Agent 101 Address 3-3-9-5 Kanda Kajicho, Chiyoda-ku, Tokyo
, to correct the date of the correction order.

Claims (1)

[Claims] (1) An ink ribbon cassette for thermal transfer in which the cassette case and cassette lid are made of conductive material.