JPH04129767A - Dot printer - Google Patents

Abstract

PURPOSE:To make supply of recording sheets feasible without providing a space for its own purpose with a sheet-storing part drawn out to a space provided for delivery of the sheets by a method wherein the sheet-storing part is provided to a printer case so that it can be drawn in the direction to which an opening for a sheet delivery port is provided. CONSTITUTION:In supplying recording sheets 12, sheet delivery side of a printer is lifted and the front part of a sheet-supplying cassette 4 is separated from the printer main body. Thereby a picking roller 15 separates from the recording sheet 12. Then the sheet-supplying cassette 4 is drawn from the printer main body toward an extension side of a sheet delivery port 20 by pulling a drawing lip piece 4b toward operator's side. At this time, guide pins 4c, 4d move along guide rails 2a, 2b, and a guide pin 4e moves, being derailed from the guide rail 2a, respectively in the direction marked with arrows. As a space is secured on the extension side of the sheet delivery part 2 for delivery of the recording sheets 12, the sheet-supplying cassette 4 can be drawn out without the need for a space of its own.

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to a dot printer.

[Prior Art] A dot printer is provided with a paper accommodating section for accommodating recording paper, and the recording paper can be taken out from the paper accommodating section and printed on the recording paper. Further, the printed recording paper can be ejected from the paper ejection port to the outside of the printer case.

[Problem to be solved] However, in conventional dot printers, the paper storage section or the printer case protrudes outside the printer case, making it bulky.
There was a problem that a large installation space was required.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a dot printer that requires a small installation space.

[Means for Solving the Problems] In order to achieve the above object, the dot printer of the present invention takes out the recording paper from the paper storage section, conveys it between the print head and the platen, prints on the recording paper, and also performs the printing. This dot printer discharges recorded paper from a paper discharge outlet to the outside of a printer case, and a paper storage section is provided in the printer case so that it can be pulled out in the same direction as the opening direction of the paper discharge outlet.

A platen and rollers for conveying recording paper may be attached to the paper storage section.

[Function] Since the paper storage section or the printer case is provided so that it can be pulled out in the same direction as the opening direction of the paper ejection port, the paper storage section can be inserted into the paper ejection space without having to secure a special space. It can be pulled out and loaded with recording paper, and the space in the paper output tray is effectively used, so it does not require a large installation space.

[Example] Hereinafter, an example of the present invention will be described in detail based on the drawings.

In FIG. 1, the printer case is a flat upper case 1. It is composed of a lower case 2 and a front lid 3, and has a flat box-like appearance.

A paper feed cassette 4 is arranged at the bottom rear side of the lower case 2.
In front of it is a paper feed roller 6. A platen 7 and a paper discharge roller 8 are arranged, and a print head 10 is arranged above the platen 7 to face it.

The paper feed cassette 4 is box-shaped with an open top, and a plurality of stacked recording sheets 2 are placed through the top opening. A hopper plate] 3 is attached to the front bottom of the paper feed cassette 4 (see FIG. 5). The hopper plate has a T-shape, and its base 13c is pivotally supported by being fitted into a hole 4a made in the paper feed cassette 4, so that it can swing around this point. . And, below the hopper plate 13, there is a hopper plate 1, 1'3.
A biasing means (not shown) is provided for biasing the front part of the hopper plate upward (not shown), and the hopper plate 13 is pushed up by this biasing means at all times or when the paper feed cassette 4 is loaded. There is. Eight drawers 4b are attached to the front end of the paper feed cassette 4. Further, guide pins 4c are provided on both sides of the paper feed cassette 4 at the rear end position, at an upper position a predetermined distance before the rear end position, and at the front end position.
, 4d, and 4e (see Fig. 3 and Fig. 2).

At the attachment part of the paper feed cassette 4 at the rear bottom of the lower case 2,
As shown in FIGS. 3 and 2, guide rails 2a are provided on both sides.
, 2b are provided. The guide rail 2a is provided over the entire front and back width of the mounting section, and the guide rail 2b extends rearward from the front end of the mounting section and ends at a predetermined position. Note that the lower end portion 2C of the side surface of the lower case 2 is bent inward, and this portion also plays the role of a guide rail. Side lower end 2C
At the front end of the attachment part, there is a part that bends inward or is cut out, and it is possible to remove the guide pin from this part. The guide pin 4C is guided by the guide rail 2a and the side lower end 2C, and the guide pin 4d is guided by the guide rail 2a and the guide rail 2b. Note that since the guide rail 2b ends in the middle, when the paper feed cassette 4 is mounted on the mounting section, the guide pin 4d can move upward away from the guide rail 2b. Further, when the cassette 4 is loaded, the lower surfaces of the lower case 2 and the cassette 4 are substantially flush with each other.

A drive circuit such as a printer board is disposed in a space 11 above the mounting portion of the paper feed cassette 4.

The picking roller 15 is pivotally supported on the frame 5b,
As shown in FIG. 5, it is rotationally driven via a wheel train by a line feed motor 16 attached to the right end of the frame 5b.

A frame 5a is fixed to the bottom of the lower case 2 on the front side of the paper feed cassette 4, and a platen 7 is attached to the frame 5a.
However, it is installed horizontally with the surface that contacts the recording paper 12 facing upward.

On the upstream and downstream sides of the platen 7, a paper feed roller 6 and a paper discharge roller 8 are attached to the frame 5a in parallel with the platen 7. Both the paper feed roller 6 and the paper discharge roller 8 are composed of a lower drive roller and an upper pinch roller. The contact positions of these drive rollers and pinch rollers are approximately at the same height as the upper surface of the platen 7.

These drive rollers are also rotationally driven by the above-mentioned line feed motor 16 via a wheel train (not shown).

On the downstream side of the ul-*IE roller 8, a pL paper opening 20 is formed close to the paper ejection roller 8 and at the same height as the central surface of the paper ejection roller 8.

The print '-γ head 10 is of an impact type that prints by pushing out a printing wire (not shown). The receiver moves along the first guide shaft 21 and the second guide shaft 22 via the part 10b.The second kite shaft 22 is fixed to the lid 3, and the receiver moves along the first guide shaft 21 and the second guide shaft 22. It is opened on the side, and when the lid 3 is opened, the second kite shaft 22 comes off from the receiving part 10b. At times, the inner front part of the printer case is exposed, making it possible to replace the ink ribbon cassette 25, which will be described later.

The print head 10 can be reciprocated via a pulley 27 and a timing heald 28 by a carriage motor 26 on the left side of the frame 5b, as shown in FIG.

A telephone cassette 25 is placed above the printing button 10. The ribbon cassette 25 has arms 25a on both sides, and the ink ribbon is placed between the platen 7 and the head 0 with the arms 25a being hooked. The ribbon cassette 25 is also driven by a carriage motor via a wheel train (not shown).

The present embodiment is configured as described above, and is printed by placing the paper on a desk or the like with the paper discharge port 20 facing toward you. Then, the recording paper 12 in the paper feed cassette 4 is picked by the picking roller 15 and conveyed in an almost horizontal state to the paper feed roller 6, and then the driving force of the paper feed roller 6 moves the recording paper 12 between the print head 10 and the platen. 7 and print head 1 via an ink ribbon (not shown).
0 printing wire collides with the recording paper 12 and printing is performed,
Next, the recording paper 12 is delivered to the paper ejection port 2 by the driving force of the paper ejection roller 8.
Ejected from 0. A space for ejecting the recording paper 12 is secured on the extension of the paper ejection port 20, so that only the recorded paper can be ejected from the paper ejection port 20. Next, when replenishing the recording paper 12, as shown in the first figure, lift the paper discharge port side of the printer and separate the front side of the paper feed cassette 4 from the printer body. This causes the picking roller 15 to separate from the recording paper 12.

Next, by pulling the pull-out tongue 4b toward the user, the paper feed cassette 4 is pulled out from the printer main body toward the extension side of the paper discharge port 20. At this time, the guide pin 4C14d is connected to the guide rail 2.
As 2b, the guide pin 4e also comes off the idle rail 2a and moves as shown by the arrow in FIG. Since a space for discharging the recording paper 4 is secured on the extended side of the paper discharge port 20 as described above, it is possible to pull out the paper feed cassette 4 without securing a special space. Next, after replenishing the paper cassette 4 with the recording paper 12, push the paper cassette 4 back, and when the paper cassette 4 is pushed back to the installation part of the lower case 2, the kite pin 4C will come to a dead end, and in this state, lower the printer body. , the guide pin 4e advances upward from the notch, and the guide pin 4d
It comes off the guide rail 2b and moves upward, and comes into contact with the picking roller 15 or the recording paper 12, and the installation of the paper feed cassette 4 is completed.

Next, a second embodiment of the present invention will be described.

In FIG. 6, the paper feed cassette 40 is either the bottom plate or the paper output
A paper feed roller 6, a platen 7, and a paper ejection roller 8 are fixed to this portion extending to the side, and a pull-out tongue piece 4 is attached to the tip of the roller.
0b is the attachment.

On the other hand, correspondingly, almost the entire bottom surface of the lower case 200 has been removed. The other configurations, such as the provision of guide pins and guide rails, are the same as those of the first embodiment, so their explanation will be omitted.

With this structure, when the paper feed cassette 40 is installed, it faces the platen 7 or the print head 10, and is located on both sides of the paper feed roller 6 and paper ejection roller 8, thereby printing. It becomes possible to do so. Recording paper 12
To replenish the paper feed cassette 40, it is sufficient to lift the paper discharge port side of the printer and pull out the paper feed cassette 40 using the pull-out tongue 40b.

Above 1st. The second embodiment may be configured such that the paper ejection port side of the printer is lifted, or the paper feed cassette is pulled out horizontally toward the paper ejection port side without lifting the printer.

In this case, the hopper plate may be lowered to release the picking roller from contact with the recording paper when the paper feed cassette/groove is pulled out.

[Effects] As explained above, the present invention provides the paper storage section in the printer case so that it can be pulled out in the same direction as the opening direction of the paper ejection port. The paper storage section can be pulled out and recording paper can be loaded.
The space for paper ejection is effectively used and does not require a large installation space.

[Brief explanation of drawings]

1 to 5 show a first embodiment of the present invention, FIG. 1 is a longitudinal sectional view showing the overall configuration, FIG. 2 is a longitudinal sectional view of main parts, and FIG. 3 is a sectional view of the main part. 4 is a front view, FIG. 5 is a sectional view taken along B-B of FIG. 1, and FIG. 6 is a longitudinal sectional view of the second embodiment. 12.200・・Case, 440・・Paper storage unit (paper feed cassette/gutter), 68・・
Rollers for conveying recording paper, 7. ・Platen, 1○. ・Print head, 12. ・Recording paper, 20. ・Paper ejection port. that's all

Claims (2)

[Claims] (1) A dot printer that takes out recording paper from a paper storage section, transports it between a print head and a platen, prints on the recording paper, and discharges the printed recording paper from a paper output port to the outside of the printer case. . A dot printer, wherein the paper storage section is provided in the printer case so that it can be pulled out in the same direction as the opening direction of the paper discharge port. (2) The dot printer according to claim 1, wherein the platen and a roller for conveying recording paper are attached to the paper storage section.