JPS6044383A - Printer - Google Patents

Abstract

PURPOSE:To accurately perform positioning of a recording paper or the like, by a method wherein a means for indicating a printing position on a recording paper by rays is provided on a carriage which is moved, and printing is conducted by a printing head mounted on the carriage. CONSTITUTION:A light-emitting element 9 is provided on a tip part of the printing head 6 mounted on the carriage 4, namely, at a position faced to a printing surface of the recording paper 3. The element 9 irradiates the recording paper 3 with rays which are focused into spot light indicated by numeral 10 at the center of the printing position. The color of the rays is preferably different from the ground color of the paper 3. Accordingly, since the center of the printing position is indicated directly on the recording paper 3, the operator can confirm an accurate position of the paper 3.

Description

[Detailed Description of the Invention] Technical Field The present invention relates to a printing device, and more specifically, a key that allows the printing position on recording paper to be visually checked and moved. The present invention relates to a printing device such as a typewriter that prints using a print head mounted on an IJ screw.

Conventional technology FIG. 1 shows the main structure of a conventional printing device of this type.

In the drawing, the reference numeral 1 is a platen, which is a printing stand and a paper feed roller, which is attached by pinch rollers 2 and 2 and feeds the recording paper 3 by rotation.

Also, the symbol 4 is a carriage, which is a support horizontally suspended parallel to the platen 1.
, 51), and is caused to run along the platen by a drive means (not shown).
A printing head 6 serving as a printing means is mounted on the carriage 4, and a display board 7 is mounted on the front facing the platen 1 before printing 71/6.

This display board 7 is used to indicate the position of the printing paper on the recording paper, and is made of a transparent material and is formed in the shape of a square frame plate having an opening 7a for printing.

The tip of the print head 6 on which the printing member is provided is placed facing the center of the opening 7a of the display board 7, and is perpendicular to the line of horizontal indicators 8a, 8a indicating the horizontal position of the printing position. The display board 70 is connected to the line of the vertical index 8b indicating the row.
It is formed by printing on both sides and the upper frame.

During printing, the carriage 4 is moved in the direction of the arrow, and the print head 6 is moved to print on the recording paper 3.
Second, printing is performed.

In the above configuration, when checking the printing position on the recording paper when placing and positioning the recording paper 3 on the platen 1, the operator uses the horizontal index 8a and the vertical index 8b as a guide, and the operator uses the horizontal index 8a and the vertical index 8b as a guide. Estimate the intersection of extension lines.

However, a clearance interval is set between the display board 7 and the recording paper 3 for movement, and since the two do not come into close contact with each other, it is easy to estimate the position as an indicator that indirectly indicates the position. With the method described above, it is very difficult to accurately confirm 1δ.

Therefore, the conventional apparatus had drawbacks such as not being able to accurately position the recording paper.

Purpose The present invention has been made in order to eliminate the above-mentioned conventional drawbacks, and provides a printing device in which the printing position on the recording paper as described above can be visually checked.tg:+! It is an object of the present invention to provide a printing device which allows an operator to accurately check the printing position and accurately position the recording paper for cents with an inexpensive configuration.

EXAMPLES The present invention will be described in detail below based on examples shown in the drawings. In each figure, the number C1-Qr+ is shown in the same part as in FIG. 1, and the explanation thereof will be omitted.

FIRST EMBODIMENT FIG. 2 shows a first embodiment of the present invention. In this embodiment, the conventional display board 7 is not provided, and the printing and printing software mounted on the carriage 4 are not provided. A light emitting element 9 is provided on the leading end of the recording paper 3, that is, at a position facing the front side of the printing paper 3. This light emitting element 9 has a code 1 at the center of the printing position 11.
A light beam converging into a spot light indicated by 0 is irradiated onto the recording paper 3. Note that it is preferable that the color of this light beam be different from the color of the background of the recording paper 3.

According to this configuration, the center of the printing position is directly indicated on the recording paper 3, so that the operator can confirm the exact printing position on the recording paper 3.

Second Embodiment The means for irradiating the spot light described above is not limited to the light emitting element. FIG. 3 shows an embodiment in which a light pipe made of, for example, an optical fiber is used as a means for this purpose.

In the figure V, the reference numeral 11 indicates an optical conduit, the tip end 1ea of which is fixed onto the tip of the print head 6 on the gear ridge 4, and the tip is placed in front of the printing paper 3. Further, the rear end of the light pipe 11 is connected to a light emitting element 12 of a light source.

A light beam from the light emitting element 12 is guided to the light guide tube 11, and irradiated from the tip thereof to converge a spot light 10 at the center of the printing position on the recording paper 3''.

Even with this configuration, the same effects as in the previous embodiment can be obtained.

Third Embodiment The light source for the light pipe 11 of the above embodiment is not limited to a light emitting element. FIG. 4 shows an example in which the power indicator lamp of each printing device is used as the light source.

In the same figure, the reference numeral 13 indicates a power indicator lamp, and the sushi 1 is placed near the power indicator lamp 13 after the light pipe 11.

With the above configuration, not only can the same effects as described in section 2 be obtained, but also the power indicator lamp 13 also serves as a light source for the light pipe 11, so it is necessary to provide a new light source to illuminate the spot light 10. There is no.

In the first to third embodiments of 2, d, a spot light 10 is irradiated to the center of the printing position to indicate the printing position, and /C is displayed by irradiating marks 4 of other shapes, not just spots. Good, -! , a frame representing the size of the printed characters may be displayed.

Effects As is clear from the above explanation, according to the present invention, in a printing device in which printing is performed by a print head mounted on a moving Galinon, and the printing position on the recording paper can be visually observed, the printing position is detected on the recording paper using a beam of light. Since the display means is provided on the gear ridge, the operator can accurately check the printing position with a simple and inexpensive configuration, and the operator can accurately position the recording paper when setting it.

[Brief explanation of the drawing]

Figure 1 is a perspective view of the main parts of a conventional printing device, Figures 2 to 4
The figures are for explaining first to third embodiments of the present invention in order, and are perspective views of essential parts of a printing device. Platen 3 ・Recording paper 4 ・Carriage 6 ... Printing nozzle 9.12 ... Light emitting element 10 ... Spot light 11 ・Light guide tube 13
・Power indicator lamp. Patent applicant Canon Corporation - Diagram

Claims (1)

[Scope of Claims] (1) In a printing device in which printing is performed by a print head mounted on a moving carriage and the printing position on the recording paper is visible, means for displaying the printing position on the recording paper with a light beam is provided on the carriage. A printing device characterized by being provided on the top. 3) The printing device according to claim 1, wherein the display means is a light pipe whose front end is fixed on a carriage and whose rear end is connected to a light source. 4) The printing device according to claim 3, wherein the light source is a light emitting element or a power indicator lamp of the printing device.