JPS61144380A - Printer - Google Patents

Abstract

PURPOSE:To smoothly mount and dismount an ink ribbon cassette into and from a carriage, and smoothly reciprocate the carraige by integrally forming together a carriage guide member of a material with excellent self-lubricity and elasticity, and ink ribbon cassette holding member of the same material. CONSTITUTION:An ink ribbon cassette 2 is mounted to an carriage by pressing in the ink ribbon cassette between notch levers 9, said cassette being held posi tively therebetween with the force of expansion thereof applied to the inner side of each notch level, wherein the notch levers and a carriage guide member 15 ar integrally formed of the same material with superior self-lubricity and elasticity, whereby said cassette can be mounted smoothly into the carriage, thereby not only these notch levers are protected against damage but also the carriage is assured capable of smoothly reciprocating.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a printing device used as a computer terminal or typewriter.

2. Description of the Related Art A conventional thermal transfer printing device using a thermal head, as shown in FIG. A voltage is applied to the heat generating resistor element 6 formed on the thermal head 4 to heat-melt or heat-heat the ink ribbon 1, and the paper T wound around the platen 6 is heated.
was printing. Further, a notch lever 9 for attaching the ink ribbon cassette 2 to the carriage 3 is provided so as to be biased inwardly, in a direction to hold the ink ribbon cassette 2. In addition, the conventional Notchi Lever 9
is made of a material with excellent self-lubricating properties, either integrated with the carriage 1 or separate from the carriage 1. 15 is a carriage guide member for smooth reciprocating movement of the carriage 3). Conventionally, it has a built-in felt or the like impregnated with oil or grease,
It was designed to smooth the reciprocating motion of the

Problems to be Solved by the Invention However, in such a configuration, the notch lever 9, which is a holding member for the ink ribbon cassette, and the carriage 3 are integrally formed, so that the notch lever 9 does not have sufficient self-lubricity and α-elasticity. As a result, when attaching the ink ribbon cassette 2 to the carriage 3, when pushing the ink ribbon cassette 2 between the notch levers 9 against the biasing force of the notch levers 9, it may not be possible to insert it smoothly or it may be forced. If it is pushed in, the notch lever 9 may be damaged. As a result, in order to replace the damaged notch lever 9, the entire carriage 3 must be replaced, resulting in an increase in repair costs.

Furthermore, if the notch lever 9 is constructed of a member made of a different material from the carriage 3, which has excellent self-lubricating properties and elasticity effects, there is a problem in that the number of parts increases, leading to an increase in cost. Furthermore, the carriage guide member 16 is required to have high slidability in order to allow the carriage 3 to smoothly reciprocate.

The problem was that the number of parts increased because it contained felt or the like impregnated with a lubricant such as oil or grease.

Means for Solving the Problems The present invention solves the above-mentioned conventional problems by providing an ink ribbon cassette holding member integrally with a carriage guide member made of a material with excellent self-lubricating and elastic properties. be.

Effect The effect of this technical means is as follows. That is,
When attaching the ink ribbon cassette to the carriage 1 In the present invention, since the holding member of the ink ribbon cassette is formed integrally with the carriage guide member, the self-lubricity and elasticity of the holding member are improved, so the ink ribbon cassette can be smoothly mounted on the carriage. It can be attached and detached, and the carriage can be smoothly reciprocated.

Example An embodiment of the present invention will be described in detail below with reference to the drawings.

In FIGS. 1 and 2, the thermal head 4 is mounted on a carriage 3, moves reciprocatingly while being guided by a carriage shaft 8 arranged parallel to the platen 6, and prints the paper 7 wound around the platen 6. It is configured such that printing is performed by the heating resistor element 5 of the thermal head 4 via the ink ribbon 1.

An ink ribbon cassette 2 is mounted on the carriage 3. Inside the ink ribbon cassette 2.

A supply reel 10 around which the ink ribbon 1 is wound. A take-up reel 11 for winding the ink ribbon used for printing is housed, and the take-up reel 11 is guided by guide rollers 12 on a drive reel shaft 13 on the carriage 3, and further on a supply reel shaft 14.
A supply reel 10 is removably inserted into the ink ribbon 1.
to drive. moreover.

A notch lever 9 for attaching the ink ribbon cassette 2 to the carriage 3 is provided so as to be biased inward, that is, in a direction to hold the ink ribbon cassette 2. 1
Reference numeral 6 denotes a carriage guide member that allows the carriage 3 to smoothly reciprocate along the carriage guide shaft 16, and is made of a material with excellent self-lubricating and elastic properties, such as polypropylene or nylon, and is integrally formed with the notch lever 9. has been done.

Next, the operation of the configuration of this embodiment will be explained.

When attaching the ink ribbon cassette 2 to the carriage 3, the ink ribbon cassette 2 is pushed between the notch levers 9 against the biasing force of the notch lever 9, and the ink ribbon cassette 2 is pressed and held inward by the elastic force of the notch lever 9. do.

At this time, the notch lever 9 is inserted into the carriage guide member 15.
Since it is made of the same material with excellent self-lubricity and elasticity, the ink ribbon cassette 2 can be inserted smoothly, and the notch L/bar 9 will not be damaged even if the ink ribbon cassette is forcibly inserted or removed. can also be prevented.

Furthermore, since the carriage guide member 16 is made of a material with excellent self-lubricating properties, the carriage 3 can smoothly reciprocate without using felt or the like impregnated with lubricating oil or the like.

Effects of the Invention In the present invention, the holding member for holding the ink ribbon cassette on the carriage and the carriage guide member for guiding the reciprocating movement of the carriage are integrally formed of a material with excellent self-lubricity and elasticity. The operability when attaching and detaching the ink ribbon cassette is greatly improved, and the reciprocating movement of the carriage becomes smoother. Furthermore, from a structural standpoint, the number of parts can be reduced by integrally molding the notch lever and carriage guide member, and at the same time parts can be easily replaced when the notch lever is damaged, preventing increases in repair costs and making it more practical. The effects are huge.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of a printing device in an embodiment of the present invention;
FIG. 2 is an enlarged perspective view of the main part, and FIG. 3 is an enlarged perspective view of the main part of the conventional printing device. 1... Ink ribbon, 2... Ink ribbon cassette, 3... Carriage, 4...
...Thermal head. 6... Heating resistance element, 6... Platen, 7... Paper, 8... Carriage shaft, 9... Notch lever, 10.・・・・・・
Supply reel, 11... Take-up reel. 12... Guide roller, 13... Drive reel shaft. 14... Supply gear 1v axis, 15... Carriage guide member, 16... Carriage guide shaft. Name of agent: Patent attorney Toshio Nakao and 1 other person! ,
Onribon q・Notschi Lever 2...I>Fri Agency, 'N sword set /θ・, sales voice, supply reel 3・Iware l14. Most reel 4 ・Thermal 8... Nod°° ノ 2 ・ 6” Itroller 6
, Defdeso W13 diagram

Claims (1)

[Claims] A carriage is provided with a print head mounted thereon and configured to be able to reciprocate, and a holding member for holding an ink ribbon cassette on the carriage and a carriage guide member for guiding the reciprocating movement of the carriage are self-lubricating; and a printing device integrally formed of an elastic material and disposed on the carriage.