JPS6351168A - Perfecting printer - Google Patents

Abstract

PURPOSE:To apply printing to both surfaces of printing paper, by providing a surface change- over guide part capable of feeding the printing paper in a paper feed tray in a surface state reverse to that before printing and a control part for changing over not only the lines in a page but also the order of characters in each line prior to printing on the delivery side of the printing paper. CONSTITUTION:When a not yet printed surface is to be printed, printing paper 1 is guided between a platen 3 and an ink ribbon 6 and pressed by a paper presser 5 to be printed by a printing head part 7. When printing is performed as it is, the upper and lower sides of a line and a character become reverse to those of a surface already printed and, therefore, the control function of a character pattern control part 8 and that of a page printing line change-over control part 10 are developed. By this method, the character pattern control part 8 perform the printing of the character pattern of the original page in one picture memory 9 so that upper and lower dots are rotated by 180 deg. and the page printing line change-over control part 10 performs the printing of the character row of the lowermost line of the original page from a line terminal character toward a line head character in order to perform normal printing. By this method, printing and line feed is performed from the lowermost line toward a page head at every one line and, when a surface change-over guide part 13 is changed over to the position on the part (b) of a delivery paper tray 11, perfecting printing is completed.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a dot printer such as a wire dot printer or a thermal transfer printer, and more particularly to a double-sided printer for printing on two-sided cart paper.

[Prior Art] Conventionally, this type of printer consists of a platen, a paper feed tray provided on the paper feed side of the platen, and a print head unit that prints on print paper, and the rotation of the platen causes The printing paper is led to the print head section and printed, and after printing, the printing paper is ejected by re-rotating the platen. It can be used to print code data sent from a word processor, etc., or automatically eject the paper using page break commands, etc. , paper feeding operation was realized. As a result, long documents could be printed on standard cut paper in a controlled manner.

[Problems to be Solved] The above-mentioned conventional dot printers could only print on one side of the printing paper, so although the printing of documents was satisfactory, they had the disadvantage of requiring a large number of sheets of paper. be.

[Means for Solving Problems] The present invention has been made in view of the above-mentioned conventional problems, and aims to provide a dot-type printer in which printing on both sides of printing paper can be performed in rotation.

To this end, the present invention provides a tod type printer comprising a platen, a paper feed tray for supplying printing paper provided on the paper feeding side of the platen, and a print head section for printing on the printing paper. A side switching guide section is provided on the side for feeding the printing paper after single-sided printing in a reversed state into the paper feed tray, or feeding the printing paper after double-sided printing into the output paper tray, and a character pattern of the printing head section. The present invention provides a double-sided printing printer that is provided with a character pattern control section that controls the character pattern control section and an intra-page print line switching control section that switches and controls the lines within the page of one screen memory.

[Example] Next, an example of the present invention will be described with reference to the drawings.

FIG. 1 is a schematic diagram of a double-sided printing printer according to an embodiment of the present invention.

The double-sided printing printer includes a paper feed tray 2 that supplies printing paper 1, a rotatable platen 3, a paper guide section 4 that sends out the printing paper 1 guided by the platen 3 to a print head section 7, and a paper presser 5. a print head unit 7 that prints on the print paper l held in a predetermined position by an ink ribbon 6; a character pattern control unit 8 that controls the character pattern of the print head unit 7; In-page printing termination (printing control unit 10, ejection paper tray 11 that receives and takes the printed and ejected printing paper l, ejects the printing paper l to the ejection paper tray 11 side, or It consists of a face cutting guide 13 on the paper feed tray 2 side that feeds the printing paper 1 into the paper feed tray 2 via a paper guide section 12.

The paper feed tray 2 is provided on the upper left side facing the rotational direction of the platen 3, and its oblique orientation makes it easy to feed the printing paper 2 to the platen 3.

The platen 3 is rotatably supported by a shaft 3a.

The paper guide section 4 has a curved shape along the outer periphery of the platen 3, and is provided below the platen 3 at a predetermined interval.

The print head section 7 is located opposite the platen 3 and has the function of printing in a dot manner on the print paper 1 fed over the platen 3 via the ink ribbon 6.

The character pattern control section 8 consists of a character pattern upper and lower dot rotation circuit 8a and a character pattern generator 8b.
The 0 character pattern up and down dot rotation circuit 8a, whose output side is connected to the print head section 7 and whose input side is connected to the one-screen memory 9, is configured to accept characters input via the character pattern generator 8b - characters in the screen memory 9. Dot the upper and lower dots of 18
It has a function of rotating 0 degrees and inputting it to the print head section 7.

The intra-page printing termination (+) control unit 10 is connected to the one-screen memory 9 and has the function of switching the lines of a predetermined page stored in the one-screen memory 9 and changing the character order of the lines.

The surface cutting d guide section 13 is connected to the output paper tray 11 and the platen 3.
It is rotatably supported by a shaft 13a on a rotating section that switches the printing paper l to a position where it can be sent out to the discharge paper tray 11 (FIG. b) or a position where it can be fed in the platen rotational direction (FIG. a).

The paper guide section 12 is attached to the side of the platen 3 on the side of the platen 3.
The right side is curved along the platen 3 so that the printing paper l can be easily sucked in.
The left side is formed horizontally or slightly upwardly to the left so that when the printing paper 1 is sent out to the paper feeding tray 2, the unprinted surface of the printing paper 1 can face the paper feeding tray 2 side.

Next, the operation of this embodiment will be explained.

The printing paper l on the paper feed tray 2 is sent out to the paper guide section 4. Following the rotation of the platen 3, the printing paper 1 is guided by the paper guide section 4 and reaches between the platen 3 and the ink ribbon 6. At this time, the paper feeding operation is completed by pressing the printing paper 1 with the paper presser 5 and stopping the rotation of the platen 3.Next, the platen 3 is rotated every line pitch and the printing head unit 7 is rotated every line. Printing continues, and here the surface switching guide section 13 is positioned in the C direction,
The printing paper 1 that has been printed and discharged is fed into the paper guide section 12 via the surface switching guide section 13, and the printing paper 1 is transferred from the paper guide section 12 to the paper feed tray 2 by rotating the platen 3 in the C direction. Since the left side of the paper guide section 12 is formed horizontally or slightly upwardly to the left, the printing paper 1 sent out from the paper guide section 12 is directed with the front side of the paper toward the -L direction of the paper feed tray 2. and is stored in the paper feed tray 2. As a result, the unprinted side of the printing paper l faces the paper feed tray, and the paper surface is upside down compared to before printing (the e side in the figure is the unprinted side, and the d side is the already printed side. be).

Further, when printing is to be performed on the unprinted surface, the printing paper 1 is guided between the platen 3 and the ink ribbon 6 in the same manner as described above, and after being pressed by the paper presser 5, printing is performed by the printing head section 7. If you print as is, the already printed surface will be lines, characters,
Since the characters are upside down, the single character pattern control fA8 and the control mechanism of the intra-page print line switching control section 10 can be activated. As a result, the character pattern control section 8 rotates the character pattern of the original page in the single-screen memory 9 by 180 degrees and prints it, and the in-page printing line switching system g1 section 10 prints the character pattern on the bottom line of the original page. Normal printing is performed by printing from the last character of the line to the first character in j order. In this way, printing and line feeding are performed from the bottom line toward the top of each page, and when the side switching guide section 13 is switched to the position on the side of the ejection paper tray 11, the printing paper l with double-sided printing is transferred to the ejection paper. The paper is discharged onto the tray 11 and double-sided printing is completed.

In this embodiment, the printer main body is provided with an intra-page printing line switching control unit, but the present invention is not limited to this, and it is also possible to control switching between the main memory and lines using, for example, a host device of the printer.

[Effects of the Invention] As explained above, one aspect of the present invention is to provide a side switching guide section on the paper ejection side that allows printing paper to be fed into the paper feed tray with the side opposite to that before printing, and a side switching guide section on the print head section. A character pattern control unit that rotates and prints the top and bottom dots of a character pattern, and an in-page printing line switching control unit that switches lines within a page and changes the order of characters within a line to print, making it possible to print on both sides of the printing paper. This has the effect of reducing the number of sheets of paper used when printing documents and increasing the value of printers that use it.

[Brief explanation of drawings]

FIG. 1 is a schematic diagram of a double-sided printing printer according to an embodiment of the present invention. 1: Print paper 2: Paper feed tray 3 Nibraten 4, 12: Paper guide section 7: Print head section 8: Character pattern control section 8a: Character pattern upper and lower dot rotation circuit 8b Two-character butter 7 Generator 9 One-screen memory 10: In-page printing line switching control section 11: Paper ejection tray 13: Side switching guide section

Claims (1)

[Claims] In a dot-type printer consisting of a platen, a paper feed tray for supplying printing paper provided on the paper feeding side of the platen, and a print head section for printing on the printing paper, a dot printer is provided on the paper ejection side of the platen after one-sided printing. a side switching guide section for feeding the printing paper upside down into the paper feed tray or feeding the printing paper after double-sided printing to the discharge paper tray; and character pattern control for controlling the character pattern of the print head section. What is claimed is: 1. A double-sided printing printer comprising: an in-page printing line switching control section for switching and controlling lines within a page, etc. in one-screen memory;