JPS6096484A - Printer - Google Patents

Abstract

PURPOSE:To simplify a device and provide for effective utilization of ribbons in connection with a printer which has two printing parts by providing a mechanism in which a driving apparatus for two ribbons is linked with a device which eliminates a sending of the other ribbon. CONSTITUTION:A printing part 4 prints on a printing paper on a platen 1 by striking the back of a type part 6. A printing part 5 prints a letter with a dot matrix. Exclusive ribbon cassettes 11 and 12 are supported on a carrier correspondingly to the printing parts 4 and 5. Linkages 35 and 39 are provided for the motor shaft 31 of an electric motor 30 which is a single driving apparatus for sending ribbons of both ribbon cassettes 11 and 12. When the motor shaft 31 is rotated in A direction, a spring clutch 34 is actuated and a drive shaft 21 is turned counterclockwise and a ribbon is sent. Likewise, when the motor shaft 31 is turned in B direction, a spring clutch 36 is actuated and a drive roller 27 is turned clockwise and a ribbon is sent. In this manner an useless sending of ribbons is eliminated, resulting in an effective use of ribbons.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a printing device capable of printing by type and by dot matrix.

BACKGROUND TECHNOLOGY In general, type printing has the characteristic of being able to print clearly, but has the disadvantage of being slow in printing speed, while dot matrix printing has the characteristic of being fast in printing speed. On the other hand, there was a defect that the printing was unclear.

, In view of these circumstances, a printing device having two printing sections for printing both characters has been proposed.

However, in this conventional device, the two printing sections are selectively moved and arranged as needed to one printing position corresponding to a printing line on the platen, and all printing can be done by one of the printing sections. , the two printing sections are selectively attached and detached at one printing position corresponding to the printing line on the print sheet, and printing is performed using either one of the printing sections. It is extremely troublesome to selectively move and arrange the two printing units with respect to their positions, or to attach and remove them, so printing by type and printing by dot matrix are selectively performed at different positions on a single sheet of printing paper. I couldn't do that.

Purpose of the Invention The present invention solves the above-mentioned defects, and eliminates the need for troublesome operations such as selectively moving and arranging two printing units to printing positions, attaching and detaching them, and, for example, printing on a single sheet of printing paper. When printing a table on a sheet of paper, the frame line of the table is printed in a dot matrix, and the characters within the frame line are printed in type. It is an object of the present invention to provide a printing device which can optionally perform matrix printing, fully exhibit the characteristics of both character parts, and perform clear printing at high speed.

A further object of the present invention is to provide ribbon cassettes exclusively for both printing parts, and to make it possible to perform printing with a ribbon suitable for the printing operation of each printing part. The device configuration can be simplified,
Moreover, it is an object of the present invention to provide a printing device that can effectively utilize ribbons.

SUMMARY OF THE INVENTION In order to achieve the above-mentioned object, the present invention has a type portion on a surface facing the print platen on a carrier that moves reciprocally along the printing line on the platen, and a hammer is applied to the back surface of the type portion. A printing device comprising: a first printing section that performs a printing operation by hitting with a dot; and a second printing section that prints in a dot matrix and has printing points different from the printing points of the first printing section; a ribbon cassette supported on the carrier for the first printing section, another ribbon cassette supported on the carrier for the second printing section, and a ribbon feeding unit for feeding both the ribbon cassettes. two driving sources,
A coupling mechanism is provided which connects the drive source to each of the ribbon cassettes and prohibits ribbon feeding of the ribbon cassette of the first printing section when only the second printing section is operating. It is something that

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

Now, the frame of the printing device of this embodiment (not shown)
A platen 1 having a circular cross section is rotatably supported on the platen 1, and a guide rod 2 is installed parallel to the platen 1. A carrier 3 is movably supported on the guide rod 2 and is reciprocated along the printing lines on the platen 1. First and second printing parts 4 and 5 having different printing points are supported on the carrier 3.

The first printing unit 4 includes a petal-shaped type disk 7 having a large number of type portions 6 on its surface facing the platen 1, and a petal-shaped type disk 7 having a large number of type portions 6 on the surface thereof facing the platen 1. The type disk T is rotated to print selected type portions 6 on the print line of the platen 1. A selection motor 8 and a hammer 9 are provided, which are arranged to correspond to the selection motor 8 and a hammer 9 which strikes the back side of the selected type part 6 to print on the printing paper on the platen 1. Further, the second printing section 5 is provided with a printing hand 1o that prints on the printing paper in a dot matrix based on a selection operation of a plurality of printing bins (not shown).

In this embodiment, the second printing section 5 is arranged so that its printing point is a predetermined number of characters above (on the printing paper feeding side) from the printing point of the first printing section 4. .

As shown in FIG. 2, first and second ribbon cassettes (11', 12) dedicated to each printing section are removably supported on the carrier 3, corresponding to each printing section 4.5. There is.

As shown in FIG. 4, the first ribbon cassent 11t;j extends outside from the unwinding roller 16 rotatably supported by wire springs 14 and 15 within the cassette body 13, and then returns to the cassette body 13. It is designed so that it enters the inside and is wound up by a winding roller 11. As the drive shaft 21, which is allowed to rotate in only one direction (the counterclockwise direction in FIG. 4) due to the engagement between the ratchet wheel 19 and the reverse rotation preventing piece 20, rotates, Take-up sheet roller 17. When the carbon ribbon 18 is rotated clockwise in FIG. 4, the carbon ribbon 18 is fed.

As shown in FIG. 5, the second ribbon cassette 12 has an endless fabric ribbon 25 with a portion extending outside the cassette body 24. As the drive roller 27 rotates, which is allowed to rotate in only one direction (clockwise in FIG. 5) due to engagement between the ratchet wheel (not shown) and the anti-reverse piece 26, the spring 28 drives the drive roller 27. Feed is applied to the fabric ribbon 25 in cooperation with a driven roller 29 pressed against the opening 27.

On the other hand, as is clear from FIGS. 2 and 8, a motor 30 is provided on the carrier 3 as a driving source for feeding the ribbons of both cassettes 11 and 12. A first coupling mechanism 35 consisting of gears 32, 33 and a first spring clutch 34 is provided between the motor shaft 31 of the motor 3o and the drive shaft 21 of the 117th bomb cassette 11. Only when the carbon ribbon 1B is rotated in the direction of arrow A in FIG. 3, the first spring clutch 34 acts to rotate the drive shaft 21 counterclockwise in FIG. 4, thereby feeding the carbon ribbon 1B. .

Further, a second coupling mechanism 39 consisting of a second spring clutch 36 and gears 37 and 38 is provided between the motor shaft 31 and the drive roller 27 of the second ribbon force center 12, and the motor shaft 31 is connected to the eighth drive roller 27. Only when rotated in the direction of arrow B in the figure,
The second spring clutch 36 acts to move the drive roller 27 to the fifth
The fabric ribbon 25 is rotated clockwise in the figure to feed the fabric ribbon 25.

Therefore, in the printing device of this embodiment, when the printing paper is inserted onto the platen 1, the first and second printing sections 4 and 5 are
When a print signal is selectively inputted to the printer, both of the character parts 4 and 5 are selectively operated, and printing by the character part 6 or the dot matrix is performed in appropriate combinations at different printing points on the printing paper. be exposed.

Therefore, when printing tables, etc., frame lines are printed using dot matrix,
Characters within the frame lines can be printed clearly and at high speed by dividing the characters as in the type part 6. In addition, in this embodiment, the printing operations of the first and second printing parts 4 and 5 are each performed by a dedicated printing unit. Since the printing is performed using ribbon cassettes 11 and 12, carbon ribbon 1B or fabric ribbon 25 suitable for the printing operation of each printing section 4.5 is used.
Clear printing can be performed without any problems. Further, although this embodiment has a simple configuration in which only one motor 30 is provided as a drive source for feeding the ribbon, when the first printing section 4 is operated, the motor 30 is The motor 30 is rotated in the direction of arrow B in FIG. 3 to feed only the carbon ribbon 1B of the first ribbon cassette 11, and when the second printing section 5 is in operation, the motor 30 is rotated in the direction of arrow B in FIG. Since the fabric ribbon 25 is fed with a force of 12, the second printing section 5 is particularly
During the operation, wasteful feeding of the carbon ribbon 1B in the one-time type first ribbon cassette 11 is prohibited,
The carbon ribbon 1B can be used effectively.

Note that the present invention is not limited to the above-mentioned embodiments, and for example, when the first printing section 4 is operating, the ribbons of the first and second ribbon cassettes 11 and 12 are fed. It is possible to arbitrarily change and embody the configuration of each part without departing from the spirit of the present invention.

Effects of the Invention As detailed above, the present invention eliminates the need for troublesome operations such as selectively moving and arranging two printing units to printing positions, attaching and detaching them, and, for example, printing on a single sheet of printing paper. When printing, the border of the table is printed using dot matrix, and the characters inside the frame are printed using type. Printing can be performed optionally, and the characteristics of both parts can be fully utilized to achieve clear printing at high speed.

Further, according to the present invention, ribbon cassettes dedicated to both year portions are provided, and although printing can be performed using ribbons suitable for the printing operation of each printing portion, the ribbon feeding device for both ribbon cassettes can simplify the configuration of
Moreover, the ribbon can be used effectively.

[Brief explanation of the drawing]

Fig. 1 is a side view showing the printing unit of a printing device embodying the present invention, Fig. 2 is a partially cutaway side view showing the related structure of the printing unit and the ribbon cassette, and Fig. 3 is a ribbon feeder.
FIG. 4 is a partially cutaway plan view of the first ribbon cassette, and FIG. 5 is a cross-sectional view of the second ribbon cassette. Platen 1, carrier 3, first printing section 4, second printing section 5
, type section 6, hammer 9, first ribbon cassette 11, second
Ribbon cassette 12, motor 30 as a driving source, first
Connector purchase 35, 2nd connector mechanism 39゜Patent applicant: Brother Industries, Ltd. Agent: Patent attorney On 1) Bo Xun Figure 4 Figure 5 Autoj/Awn procedure? 111 Author: November 11, 1981 Kazuo Wakasugi, Commissioner of the Patent Office 3. Relationship with the person making the amendment: Patent applicant Address: 9-35 Hori Jj-dori, Mizuho-ku, Nagoya Name: 526 Brother Industries, Ltd. Co., Ltd. (Name) Representative: Katsuji Do11 Shima 4, Agent Address: 2fi Hatazume-cho, Gifu City, 500 Location: <0582
> 65-1810 (Representative) For FAX only <0
582> 66-13396, Contents of amendment (1) The description of "roller" on page 6, lines 18 and 19 of the specification, and page 7, lines 2 and 6 to 7, is corrected to "spool". .

Claims (1)

[Claims] l The type part (6) is placed on the carrier (3) that moves back and forth along the printing line on the platen (1).
, and the back side of the type part (6) is
The first printing section (4) performs the printing operation by striking with the printer (9).
) and a second printing section (4) which has printing points different from those of the first printing section (4) and prints in a dot matrix.
5) A printing device comprising: a ribbon cassette (11) supported on the carrier (3) for the first printing section (4); and a ribbon cassette (11) supported on the carrier (3) for the second printing section (5). another ribbon force set (12) supported on the carrier (3); one drive source (30) for feeding the ribbon of both ribbon cassettes (11, 12); Each of the ribbon cassettes (11, 1
2) and when only the second printing section (5) is operating, the ribbon cassette (
The connecting mechanism (3) that prohibits the ribbon feeding of (11)
5, 39).