JPH0525897Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of industrial application] The present invention is equipped with a switch means for selecting a code system corresponding to a connected host computer, etc., and setting the amount of paper feed after power is turned on. Regarding printing devices.

[Prior Art] In a conventional printing device, an electronic circuit board on which electronic circuits constituting control means, storage means, etc. are formed is provided inside the main body, and this electronic circuit board is covered with a main body cover. Protected from external forces, etc. The electronic circuit board is provided with a switch means called a deep switch that selects a code system such as a character code or instruction code that is compatible with the host computer, or sets the amount of paper feed after power is turned on. , generally operated through an opening formed in the rear surface of the body cover. This opening is normally closed by a removable lid member, and is opened by removing the lid member when the switch is operated.

[Problems to be Solved by the Invention] Therefore, each time the above settings are made, the lid member must be attached and detached from the main body to open and close the opening, which is cumbersome and time consuming. In addition, if the lid is left removed, there is a risk of the lid being lost, and metal clips, staples, etc. may fall from the opening onto the electronic circuit board, causing a short circuit in the electronic circuit. There are inconveniences that may cause malfunctions.

Furthermore, when continuous printing paper is set in the printing device, it becomes extremely difficult to operate the switch means on the rear surface of the main body. A structure in which the switch means is placed on the top surface of the main body or the like is conceivable, but since it has to be arranged alongside mechanical parts and other switches, the printing device becomes larger.

[Purpose of the invention] This invention was made in view of the above circumstances, and its purpose was to make it possible to operate the switch means regardless of the presence of continuous paper, and to arrange the switch means without increasing the size of the entire device. The purpose of this printer is to provide a printing device that allows the selection of the code system and settings such as the paper feed amount to be performed quickly and with simple operations, unlike conventional printers, and allows the use of electronic circuit boards such as metal clips and staples. To provide an excellent printing device which can be prevented from being dropped and causing failure due to short-circuiting of electronic circuits.

[Means for solving the problem] This invention consists of an electronic circuit board that is supported at the bottom of the case and constitutes a control means, a storage means for storing a plurality of programs, etc., and an electronic circuit board that is supported along the longitudinal direction of a platen that supports paper. a protective cover that covers the electronic circuit board and has a recess 4 for accommodating the printing mechanism, and a program that is provided on the electronic circuit board and that is stored in the storage means. In the printing device, the recess 4 has an opening facing upwardly formed at the bottom of the recess 4, and a transparent elastic lid body having a notch through which a rod-shaped operating member can be inserted. is provided in the opening in a closed state.

[Function] According to this invention configured as described above, since the switch means is disposed below the recess that accommodates the printing mechanism, the switch means can be operated regardless of the presence of continuous printing paper, and the printing device becomes larger. There's nothing to do.

When selecting a code system corresponding to the host computer, setting the paper feed amount, etc., the switch means is operated by inserting a rod-shaped operating member into the notch while looking through the transparent elastic lid.

Although it is difficult to put one's fingers into the bottom of the recess, by using the rod-shaped operating member, the opening of the elastic lid and the operation of the switch means can be performed without any trouble in a series of operations.

Normally, the notch in the elastic lid closes to prevent clips, staples, etc. from falling onto the electronic circuit board.

[Effects of the invention] According to this invention, the switch means can be operated by using the bottom of the recess housing the printing device, which is not normally used, so the switch means can be operated regardless of the presence of continuous printing paper. It is easy to operate and does not require the printing device to become large.

The selection of the code system corresponding to the host computer, the operation of the switch means for setting the paper feed amount, etc., can be performed without removing the elastic lid from the opening of the protective cover.

Therefore, the removed lid body will not be lost.

Further, even if a metal clip or the like falls into the protective cover, it is blocked by the elastic lid and does not fall onto the electronic circuit board, thereby preventing malfunctions of the printing device.

[Example] An example in which this invention is embodied in a printing device will be described below with reference to the drawings. As shown in FIG. 1, a frame 1 of the printing device has a housing 2 made of synthetic resin.
and a cover body 3 made of synthetic resin that covers the upper surface of the housing 2, and a recess 4 having a U-shaped cross section extending left and right is formed approximately in the center of the cover body 3. This recess 4 has a paper pan 4 having an arc-shaped cross section.
a are connected. A rotary shaft 5 is rotatably supported between the left and right side plates of the housing 2, and a platen 6 located on the paper pan 4a is attached to the rotary shaft 5.
is inserted and fixed. A guide shaft 7 extending parallel to the platen 6 is installed in the housing 2 in front of the platen 6, and a carriage 8 is mounted on the guide shaft 7.
is inserted and supported in the rear side portion thereof so as to be able to reciprocate along the platen 6. Further, the front side portion of the carriage 8 is supported on a guide rail (not shown) so as to be able to reciprocate. A wire dot type print head 9 is placed on the carriage 8 for printing on printing paper (not shown) supported on the platen 6.

As shown in FIG. 1, a support shaft 10 is provided on the right side of the frame 1 and extends back and forth, and a drive pulley 11 is rotatably supported on the support shaft 10. A support shaft (not shown) extending to is rotatably supported, and a driven pulley 13 is similarly rotatably supported on the rear side of the support shaft. An endless belt 14 is hung between the pulleys 11 and 13, and a portion of the upper side of the belt 14 is fixed to the carriage 8. A motor (not shown) is connected to the spindle 10, and when the motor is driven to rotate, the spindle 10 and the drive pulley 11 are rotated, and the motor is rotated together with the carriage 8 via the drive pulley 11, driven pulley 13, and belt 14. The print head 9 is reciprocated in the left-right direction in FIG.

An electronic circuit board 15 is fixed on the bottom 2a of the casing 2, on which electronic circuits constituting control means, storage means, etc. are provided. This electronic circuit board 1
5 is covered by a cover body 3 and is protected from external forces by the cover body. A switch control section 16 is mounted on the electronic circuit board 15 so as to be electrically connected to the electronic circuit. This switch section 16 is provided with a plurality of switches 16a. The storage means stores code systems such as character codes and control codes that the printing device has, for example.
Programs corresponding to the code systems of the various host computers to be connected are stored for each type of host computer, and by operating the switch 16a before turning on the power, the program corresponding to the host computer can be selected after turning on the power. It can be executed to correspond to the coding system of the printing device and the coding system of the host computer. Further, by operating the switch 16a, the amount of paper feed after the power is turned on can be set. The switch 16 is located on the left side of the recess 4 of the cover body 3.
A corresponding rectangular opening 17 is formed at a predetermined distance from a. A thin plate-shaped lid member 18 as shown in FIG.
7 is fixed to the recess 4 so that it is always closed. The lid member 18 is made of transparent plastic, such as polypropylene, to be elastic, and has a flat H-shaped notch 19 extending vertically through it.

Therefore, when adapting the code system of the printing device to the connected host computer or setting the paper feed amount, a rod-shaped operating member 20 such as a screwdriver is inserted into the notch 19 of the cover member 18 as shown in FIG. It is inserted through the cover member 18, and while looking through the lid member 18, the tip of the operating member 20 is used to operate an appropriate one of the plurality of switches 16a. At this time, the portion of the lid member 18 where the notch 19 is formed is slightly bent and deformed inward, but after the operation, by pulling out the operating member 20 from the notch 19, the lid member 18 deforms and returns to its original state due to its own elasticity. .

In this way, during the initial setting operation, the operating member 20
It is only necessary to insert the opening 17 into the notch 19, which is simple and quick, unlike the conventional method in which the lid member has to be attached and detached, and the operability is improved.
is always covered by the lid member 18,
This eliminates the risk of metal objects such as clips and staples falling onto the electronic circuit board 15, and eliminates the possibility of malfunctions caused by short circuits caused by these metal objects, which is an excellent practical effect.

In the above embodiment, the lid member 18 is made of polypropylene, but is not limited to polypropylene, and may be made of any elastic and transparent material.

Further, the cut formed in the lid member is not limited to an H-shape, but can be formed into various shapes such as a T-shape, and in short, any cut that allows insertion of the operating member is sufficient.

In addition, it goes without saying that various changes can be made in the specific implementation without departing from the gist of the invention.

[Brief explanation of the drawing]

Figure 1 is a top view of the main parts showing an embodiment of this invention, Figure 2 is a sectional view of the main parts taken along the - line in Figure 1, Figure 3 is an enlarged front view of the main parts, and Figure 4 is FIG. 3 is an enlarged perspective view of main parts. In the figure, 4a... paper pan, 6... platen, 16a... switch, 17... opening, 18
... Lid member, 19 ... Notch, 20 ... Operation member.

Claims (1)

[Claims for Utility Model Registration] An electronic circuit board supported at the bottom of the case and constituting a control means, a storage means for storing a plurality of programs, etc., and a printing mechanism that moves along the longitudinal direction of a platen that supports paper. a protective cover covering the electronic circuit board and having a recess 4 for accommodating the printing mechanism; a switch means provided on the electronic circuit board for selecting a program stored in the storage means; In the printing device, an opening facing above the switch means is formed at the bottom of the recess 4, and a transparent elastic lid body having a cut through which a rod-shaped operating member can be inserted is attached to the opening. A printing device characterized by being provided in a closed state.