JPS59164175A - Impact type printer - Google Patents

Abstract

PURPOSE:To perform uniform and sharp printing operation, by arranging a deflection correcting means for correcting the deflection of an ink impregnated body. CONSTITUTION:A printing head 12 is constituted to arrange a receiving part 18 so as to allow said receiving part 18 to oppose to a wire projecting part 16 for projecting a wire 14. A space part 26 for providing a predetermined distance between a downwardly directed bent end part 24a of a plate body 22a and an upwardly directed bent part 24b of a plate body 22b is demarcated to the receiving part 18 and stoppers 28a, 28b are provided to the rear parts of the plate bodies 22a, 22b. Through this space part 26, one surface of the ink impregnated body 10 mounted to the receiving part 18 is directly opposed to the wire projecting part 16 of the printing head 12. In the next step, the plate body 30 contacted with the rear part of the ink impregnated body 10 is brought into contact with said ink impregnated body 10 under pressure by an elastic member 32 to press the deflected ink impregnated body 10. By this method, the deflection of the ink impregnated body 10 is corrected. As a result, uniform and sharp printing can be performed.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an impact printer, and more particularly, in an impact printer using an ink-impregnated body as an inking means, beautiful printing can be achieved by correcting the deflection of the ink-impregnated body. Regarding the impact printer that made it possible.

Nowadays, printers have increasingly enhanced their output functions, and their output speeds have become extremely high, allowing computers, for example, to visually check the large amount of data they process as quickly as possible.

By the way, with printers that output at high speeds like this,
Currently, impact printers using ink ribbons are widespread. These impact printers include various types of printers, including type bar type, type pole type, and type cylinder type.

Therefore, when using an ink ribbon in this impact printer, the ink ribbon is either wound and held by a reel on both sides of the printer, or the ink ribbon is The printer itself was housed in a cassette and was configured to move as the printing head moved in the horizontal direction. In the former case, replacing the used ink ribbon is extremely troublesome, and in the latter case, each time a character is printed by the printing head, a new ribbon section is placed opposite the head to wait for the next printing operation. For this purpose, it must necessarily have a movable part for winding up the ribbon. Furthermore, after use,
Since the entire cassette is thrown away, it is also a waste of resources. That is, since the movable parts are provided, the installation space becomes extremely large, and there are various disadvantages such as an increased possibility of failure.

As a result of various studies, the inventor of the present invention discovered that in printers, the printing area for each - character is usually extremely small, and that in wire dot printers, output operations are performed all at once based on recorded signals. In consideration of the fact that it is not necessarily necessary to check whether the printing is the desired one every time a character is printed, the length of the paper facing the printing head is the same as the maximum width of the paper to be printed. A printing paper is inserted between the printing head and the ink-impregnated body, and the output of the wire protruding from the printing head is symmetrical to that of a normal type of printing. In other words, if the printing paper is energized by backing, only the energized part of the head will come into pressure contact with the ink-impregnated body, and the characters, etc. will appear in a so-called lining state, and there will be no movable part corresponding to the ink ribbon. After making a prototype, he filed a patent application for an impact printer on February 24, 1981.

Incidentally, as the ink-impregnated body exemplified in the above patent application, a sintered metal made of oil-less metal or a porous synthetic resin body such as 6-6 nylon is used. tends to bend slightly in the horizontal or vertical direction due to problems with processing accuracy. This means that the distance between the ink-impregnated body and the tip of the printing head facing it is no longer constant, and therefore, when the head moves horizontally to perform a printing operation, there is a difference between the distances. Even though the printing is the same, some of the printing is clear, while others are unclear, and this has become a serious drawback in that the printing cannot be made uniform.

As a result of further research and ingenuity, the inventor of the present invention found that if a deflection correcting means for correcting the deflection by pressing with a constant pressure is placed on the rear part of the ink-impregnated body to be fixed, the front surface of the ink-impregnated body can be fixed. Since the relative distance to the horizontally moving printing head is made uniform, and therefore the impact distance from the bottom of the hem to the impregnated body is also made equal, a printer that can always ensure uniform and clear printing operation can be obtained. It turned out that the problems could be solved all at once.

Therefore, an object of the present invention is to provide an impact printer in which an ink-impregnated body is disposed facing a printing head, and to provide uniform and clear printing by providing a deflection correcting means for correcting the deflection of the ink-impregnated body. The purpose of this invention is to provide a printer capable of performing the following operations.

Next, preferred embodiments of the impact printer according to the present invention will be described in detail with reference to the accompanying drawings.

In FIG. 1, reference numeral 10 indicates an ink-impregnated body made of, for example, sintered oilless metal or a porous resin body such as 6-6 nylon. This ink-impregnated body 10 has enough hardness to withstand the impact when a printing wire protrudes from an opposing wire dot type printer, as will be described later. The ink-impregnated body 10 itself has a substantially square cross section, and its length is preferably configured to correspond to the maximum horizontal movement length β of the printing head 12 in the printer. Of course, this ink-impregnated body 10 may be divided into appropriate lengths, and when attached, the entire length may correspond to the length β.

On the other hand, in blinking, the printing head 1
2 and from which the wire 14 is guided out.
The receiving portion 18 is disposed facing the. As can be understood from FIG.
, a pair of plates 2 held by 20b and having bent ends.
2a and 22b, in this case,
The bent end 24a of the plate 22a pointing downward and the plate 2j
A space 26 is defined at a predetermined distance from the upwardly oriented bent portion 24b of t). Note that the plate bodies 22a, 2
Stoppers 28a and 28b made of flat plates bent with respect to the side walls 20a and 20b are provided at the rear of 2b.

In the figure, reference numeral 30 is a relatively thick metal plate, and reference numeral 32 is a curved metal elastic body.

Therefore, when using the impact printer configured as described above, first the ink-impregnated body 1 is placed in the receiving portion 18.
0 must be attached. Therefore, the ink-impregnated body 10 having a rectangular cross section is inserted from the rear of the plates 22a and 22b facing the printing head 12 and reaches the bent ends 24a and 24b. Therefore, one surface of the ink-impregnated body 10 is exposed to the outside from the space 26. That is, it directly faces the wire protrusion 16 of the printing head 12.

Next, a plate 30 having the same length as the ink-impregnated body 10 is attached to the back of the ink-impregnated body 10.
is brought into contact with the plate body 30, and the elastic body 32 is pressed against the plate body 30. The curved elastic body 32 is inserted downward using the spaces 34a and 34b defined by the attachment of the stoppers 28a and 28b, and its curved tip 36 is strongly pressed against the plate body 30. This plate 30 similarly presses the bent ink-impregnated body 10. Therefore, the ink-impregnated body is held between the plate body 30 and the bent ends 24a and 24b, and its deflection is corrected. Therefore, since the surface of the ink-impregnated body 10 facing the printing head 12 from the space 26 has a face-like shape, the wire protrusion 1 moves horizontally when biased.
The distance from 6 is always constant.

As a result, even and clear printing is achieved.

Next, another embodiment of the present invention is shown in FIG. 3 and subsequent figures. In addition,
In this example, the same reference numerals as in the previous example are:
In this example, the same components are shown.

Therefore, in the embodiment shown in FIG. 3, a plurality of coil springs 40 are used in place of the curved elastic body 32 described above.

That is, one end of the coil spring 40 is arranged at equal intervals on a metal plate 42, and by inserting this plate 42 from above into the spaces 34a and 34b, the coil spring 40 is The other end is pressed against the plate 30. Therefore, the plate body 30 has bent end portions 24a, 24.
In combination with b, the deflection of the ink-impregnated body 10 is forcibly corrected.

- Further, another embodiment of the present invention is shown in FIGS. 4 and 5. In this embodiment, a metal plate 50 is separately prepared. At that time, a screw groove 52 is installed in this plate body 50 at a predetermined distance.
is carved and a screw 54 is screwed into this screw groove. The plate body 50 configured in this manner is inserted downward from the space 34 and fixed onto the stoppers 28, 28. Therefore, if the screw 54 is adjusted appropriately, its tip will come into pressure contact with the plate 30, and the deflection of the ink-impregnated body 10 held between the bent ends 24a and 24b will be corrected.

Furthermore, another embodiment is shown in FIGS. 6 and 7.

In this embodiment, a plate-shaped body 60 is attached to the tip of the screw 54 instead of the plate body 30. Therefore, each screw 54
By screwing, the plate-shaped body 60 comes into pressure contact with the ink-impregnated body 10, and its deflection can be corrected. In this example,
When a part of the ink-impregnated body 10 is bent, there is an advantage that the corresponding screw 54 is screwed to correct the bend.

According to the present invention, as described above, although the configuration is extremely simple, the deflection of the ink-impregnated body can be easily corrected by applying pressure. The surface you are touching becomes straight.

Therefore, the wire 14 fed out from the wire protrusion 16 that moves in parallel and in the horizontal direction also comes into pressure contact with the uniform ink-impregnated body via the recording medium, resulting in a beautiful printing operation.

Although the preferred embodiments of the printer according to the present invention have been described above, the present invention is not limited to these embodiments, and various improvements and design changes can be made without departing from the spirit of the present invention. Of course it is possible.

[Brief explanation of the drawing]

FIG. 1 is a perspective explanatory view showing the relationship between the printing head and the receiving section in the printer according to the present invention, and FIG. 2 is a side view of the printing head and the receiving section in the printer according to the present invention. FIG. 3 is a longitudinal cross-sectional view showing another embodiment of the receiver in the printer according to the present invention, and FIG. 4 is a longitudinal cross-sectional view showing another embodiment of the receiver in the printer according to the present invention. , 5th
The figure is a perspective view of the plate incorporated in the receiving part of FIG.
The figure is a longitudinal sectional view showing another embodiment of the receiving section in the printer according to the present invention, and FIG. 7 is a perspective view of the plate etc. incorporated in the receiving section of FIG. 6. 10... Ink-impregnated body 12... Printing head 14... Wire 16... Wire protrusion 18...
Receiving part 2o... Side wall 22... Plate body 24... Bent end part 26... Space part 28... Stopper 30... Plate body 3
2.Elastic body 40..Coil spring 42.50..Plate body 52..Groove 54..Screw
6o... Dish-shaped body patent applicant Naoto Otsuka Applicant's agent Patent attorney Tsuyoshi Chiba 1'Hiroshi □.ゝ-, How to write a procedural amendment April 7, 1980 Kazuo Wakasugi, Commissioner of the Japan Patent Office 1. Case display example 1958 Patent Application No. 038764 2. Name of the invention Impact printer 3. Person making the amendment Relationship to the incident Patent applicant address: 60 Katakura-cho, Hachioji-shi, Tokyo Name
Naoto Ogoki Person 4, Deputy, Person 5, Subject of correction (1) Drawing = 394

Claims (1)

[Scope of Claims] (11) In an impact type printer, a receiving part is provided oppositely to the printing head with a predetermined distance therebetween, and an ink-impregnated body is removably latched to the receiving part, and the ink-impregnated body is attached to the receiving part. An impact printer characterized in that it is provided with a deflection correcting means for correcting the deflection. (2. In the printer according to claim 1,
The impact type printer is configured such that the deflection correcting means is arranged at the rear of the receiver and corrects the deflection by pressing the ink-impregnated body that is locked to the receiver. (3) In the printer according to claim 2,
In an impact type printer, the deflection correction means includes an elastic body, a plate that engages with the tip of the elastic body, and a locking means that locks the elastic body. (4) An impact type printer according to claim 3, wherein the elastic body is a curved leaf spring. (5) In the printer according to claim 3,
An impact printer whose elastic body is composed of a coil spring. (6) In the printer according to claim 3,
The deflection correcting means is composed of a plate, a locking means for locking the plate, and a screw that is screwed into the plate, and by turning the screw, the tip of the screw is brought into contact with the ink-impregnated body or the ink-impregnated body. An impact type printer comprising correcting the deflection of the ink-impregnated body by pressing it against a plate. (7) In the printer according to claim 3,
The deflection correcting means is composed of a plate, a locking means for locking the plate, a screw screwed into the plate, and a plate-shaped body fixed to the tip of the screw. An impact type printer that presses the dish-like body against an ink-impregnated body to correct its deflection.