JPS613800A - Printer - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] Technical Field The present invention relates to a printing device, and more specifically, in a printing device that is provided with a keyboard section and a printing section, printing paper is allowed to pass below the keyboard section. By defining a permissible passage and inserting a portion of the paper into the passage, it is possible to reduce the paper placement area in the printing section, thereby achieving compactness of the apparatus, and to reduce the thickness of the paper. This invention relates to a novel printing device configured to allow easy printing without any restrictions.

BACKGROUND OF THE INVENTION Various types of printing devices are known, including, for example, English typewriters, which are comprised of a keyboard section having a large number of keys and a printing section disposed behind the keyboard section. Particularly recently, as shown in FIG.
4. The
A printing device that is integrally provided with a keyboard section 16 for giving input commands to the Y plotter 15 has been proposed.

However, in this printing device, there is a printing section on which printing paper 10 is placed and a recording area for printing, etc., and a keyboard section 1.
6 are arranged side by side on the same plane, the area occupied by the entire printing device is inevitably large.
There is a drawback in that there is a limit to its compactness.

In addition, in a structure where a cylindrical platen is used for the printing part and the printing paper is wrapped around this platen, as in an English typewriter, the printing area is limited to the platen, so the space problem mentioned above is solved. Ru. However, since the printing paper used in this printing device must be able to be easily rolled up and fed to the platen, there are disadvantageous limitations such as the inability to use thick paper.

Purpose The present invention has been devised in order to suitably solve the above-mentioned difficulties inherent in a printing device in which a keyboard section is provided in front of the operator and a printing section is arranged two-dimensionally behind the keyboard section. The present invention provides a printing device which realizes a compact configuration, reduces the installation area, and is not limited by the thickness of the printing paper, even though it is equipped with the keyboard part 1 and the printing part. The purpose is to provide.

Embodiments Next, the printing apparatus according to the present invention will be described in detail by way of preferred embodiments with reference to the accompanying drawings.

In the embodiment shown in FIG. 2, the printing device indicated by reference numeral 18 basically consists of a keyboard section 22 having a large number of input keys 20 & on the top surface, and a printing section 24 arranged behind the keyboard section 22. It is configured. That is, the printing device 18 includes a frame 2 formed into a predetermined shape as shown in the figure.
6, and on the front side (as viewed from the operator) of the upper surface of the frame 26, a keyboard section 22 for inputting Roman characters in a JIS layout, for example, is provided. Further, behind the keyboard section 22, a printing section 24 (described later) is arranged which feeds the printing paper 28 back and forth in the Y direction to perform necessary printing and other recording.

A rectangular opening 30 is formed on the front surface of the frame 26, that is, on the front side of the operator, through which a printing paper 28 of a predetermined width can be inserted. It communicates with the printing paper path 32. As shown in FIG. 4, this printing paper path 32 extends horizontally from an opening 30 on the front surface of the frame 26 below the keyboard section 22 toward the printing section 24, and is communicatively connected to the printing section 24. As will be described later, in use, the printing paper 28 is interposed in the passage 32 so as to be movable back and forth in the horizontal direction.

The printing unit 24 has the function of printing and other writing records on the printing paper 28, and basically includes a print head 34 and a platen 36 that are located above and below the printing paper path 32. It consists of In the illustrated embodiment, the print head 34 includes a pen holder 40 inserted into a guide bar 38 having a rectangular cross section so as to be slidable in the X direction, and a pen holder 40 supported perpendicularly to the pen holder 40 so as to direct the pen tip downward. Pen 42 (e.g. oil-based ballpoint pen)
However, heads employing various other printing principles, such as thermal heads for thermal paper and wire dot impact printing heads, are preferably used. As shown in FIG. 3, the print head 34 is connected to a pulley 46 fixed to the rotating shaft of a first stepping motor 44 disposed outside one printing area and a pulley 48 pivotally supported outside the other printing area. The guide bar 38 is attached to the wound wire 50 and rotates the motor 44 in forward and reverse directions.
It is designed to move freely in the X direction along the The guide bar 38 is connected to the plunger of the solenoid 52, and by energizing and deenergizing the solenoid 52, the guide bar 38 is rotated by a predetermined angle about its axis, thereby printing. The pen 42 is brought into contact with and moved away from the paper 28 to enable movement of the head 34 and supply of the print paper 28 onto the platen 36 during non-printing.

Further, as shown in FIGS. 3 and 4, a paper feed roller 54 is rotatably disposed in parallel with the platen 36 in front of the print area of the print head 34 on the operator's side. It is designed to be driven in forward and reverse directions by two stepping motors 56. The paper feeding roller 54
Above, a pair of presser rollers 58, 58 supported by the crankshaft 57 are disposed at appropriate intervals in the axial direction, and are configured to move toward and away from the paper feed roller 54. The printing paper 28 can be pinched by the holding roller 54 and the presser roller 58.

The roller 54 is rotated step by step by the driving of the stepping motor 56, so that the printing paper 28, which is held between the rollers 54 and 58, can be moved forward and backward in the Y direction.

Functions and Effects Next, the functions and effects of the printing device according to the present invention will be explained. In use, an operator activates the solenoid 52 to raise the print head 34 from the platen 36. Further, the crankshaft 57 is raised manually or by driving means such as a solenoid, and the presser roller 58 is moved away from the paper feed roller 54. Next, the printing paper 28 is fed from the rear to the front and inserted into the gaps formed between the print head 34, the platen 36, the presser roller 58, and the paper feed roller 54, and then a part of the paper 28 is fed. is interposed in the printing paper path 32 formed below the keyboard portion 22. At this time, the printing paper 28 will extend toward the front side from the opening 30 formed in the front surface of the frame 26, depending on its length in the vertical direction. Note that the printing paper 28 may be supplied from the front side of the opening 30 as long as the width of the opening 30 in the keyboard section 22 and the length of the paper 28 allow.

Next, the print paper 28 is moved forward horizontally directly below the print head 34, and after the tip of the pen 42 reaches the scheduled print start position, the print head 34 and presser roller 58 are lowered, and both stepping motors are moved. 4
4.56 to give movement in the X direction to the print head 34 and movement in the Y direction to the printing paper 28, and by combining the movements in the Make a record.

As described above, according to the device according to the present invention, the printing paper is interposed in the passage formed below the keyboard section and communicating with the opening in front of the frame, so that it can move forward and backward in the Y direction. Therefore, the disadvantage of the large occupied area inherent in the printing apparatus according to the prior art described above is solved at once, and an extremely compact structure can be achieved.

However, there is no need to wrap the printing paper around the platen, so
It is possible to print appropriately without being limited by the thickness of the paper, etc.
Has many advantages.

[Brief explanation of the drawing]

FIG. 1 shows an example of a printing device according to the prior art, in which a keyboard section and an X-Y plotter are installed on the same plane, and FIG. 2 shows a printing device according to the present invention. A third perspective view showing a schematic configuration of a preferred embodiment.
This figure is a plan view showing details of the printing section of the printing device shown in FIG. 2, and FIG. 4 is a sectional view taken along the line rV-TV in FIG. 3. 18... Printing device 2o... Key 22.
...Keyboard part 24...Printing part 26...
・Frame 3o...Opening 32...Print paper path 34...Print head 36...Platen

Claims (1)

[Claims] A keyboard section (22) equipped with a large number of keys (20) on the top surface
) in which a printing unit (24) is arranged behind the printing device (18
), the frame (26) of the printing device (18) has an opening (30) provided on the front surface of the frame (26) passing below the keyboard portion (22) to the printing portion (24).
A printing paper passageway (32) extending substantially horizontally toward is formed, and the printing section (24) is separated from a printing head (34) and a platen (36) located above and below with the passageway (32) in between. A printing device characterized by comprising: