JPH0848436A - Video printer - Google Patents

Abstract

PURPOSE:To prevent the happening of the paper jamming due to the bending of a photographic printing paper sheet in the supply of paper sheets. CONSTITUTION:As for a video printer which is constituted so that a photographic printing paper sheet 1 and an ink ribbon 2 are nipped by a platen 3 and a thermal head 4, and the electric energy corresponding to the image signal is supplied into the thermal head 4, and printing is carried out on the photographic printing paper sheet 1, a paper feeding roller 5a for feeding the photographic printing paper sheet 1 between the platen 3 and the thermal head 4 and a paper feeding guide 6 are installed. Between the paper feeding roller 5a and the paper feed guide 6, a curved shape forming guide 21 which is bent so that he photographic printing paper sheet 1 is wound on the shaft in the traveling direction of the photographic printing paper sheet 1.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a video printer for hard copying video signals.

[0002]

2. Description of the Related Art Generally, in order to make a hard copy of a video signal, a photographic printing paper 1 and an ink ribbon 2 are sandwiched between a platen 3 and a thermal head 4 as shown in FIG. Supply energy,
A video printer that prints on this printing paper has been proposed.

FIGS. 3A, 3B and 3C show the construction near the platen 3 and the thermal head 4 of such a video printer. Referring to FIG. 3, reference numeral 5a denotes a paper feed roller for feeding the photographic printing paper 1, and the paper feed roller 5a and the separation roller 5b.
The photographic printing paper 1 is sandwiched between and, and the photographic printing paper 1 is fed between the platen 3 and the thermal head 4 through the paper feeding guide 6 by the rotation of the paper feeding roller 5a.

In FIG. 3, 7 is a capstan for transferring the photographic printing paper 1 at a constant speed, 8 is a pinch roller for transferring the photographic printing paper 1 in cooperation with the capstan 7, and 9 is a predetermined printing paper 1. It is a regulation guide to transfer to a position.

In FIG. 3, reference numeral 10 denotes an ink ribbon supply reel. The ink ribbon 2 from the ink ribbon supply reel 10 is wound between the guide roller 11, the platen 3 and the thermal head 4 and the guide roller 12 to wind the ink ribbon. It is designed so as to be wound around the take-up reel 13.

In such a video printer, as shown in FIGS. 3A, 3B, and 3C, the platen 3 and the thermal head 4 are separated from the capstan 7 and the pinch roller 8 by a predetermined distance when the paper is fed. By rotating the paper roller 5a, the photographic printing paper 1 is transferred so as to be pushed out between the paper feed guide 6, the platen 3 and the thermal head 4, between the capstan 7 and the pinch roller 8 and to the regulation guide 9.

Thereafter, at the time of printing, the printing paper 1 is sandwiched by the capstan 7 and the pinch roller 8 and the capstan 7 is rotated at a predetermined speed so that the printing paper 1 is transported at a predetermined speed and the printing paper 1 The ink ribbon 2 and the ink ribbon 2 are sandwiched between the platen 3 and the thermal head 4 with a predetermined pressure, and electric energy corresponding to a video signal to be printed is supplied to each element of the thermal head 4, and the printing paper 1 is supplied with the video signal. It was like printing an image.

[0008]

In such a video printer, during the feeding operation of the photographic printing paper 1, the photographic printing paper 1 is conveyed by pushing out the photographic printing paper 1 by the paper feeding roller 5a, and at the same time, it is accurate. The traveling state of the photographic printing paper 1 is regulated by various guides for alignment.

In particular, the space between the platen 3 and the paper feed guide 6 is narrow, and the running resistance due to friction against the photographic paper 1 and static electricity is large. Therefore, between the paper feed roller 5a of the photographic paper 1 and the paper feed guide 6. As shown by the alternate long and short dash line in FIG. 3A, bending is likely to occur, and when this bending occurs, there is a disadvantage that a paper jam occurs.

In view of the above point, the present invention has an object to prevent paper jam due to bending of the photographic printing paper 1 at the time of paper feeding.

[0011]

According to the present invention, for example, as shown in FIGS. 1 and 2, a photographic printing paper 1 and an ink ribbon 2 are sandwiched between a platen 3 and a thermal head 4, and the thermal head 4 responds to a video signal. In a video printer configured to supply electric energy to print on the printing paper 1, a paper feed roller 5a for feeding the printing paper 1 between the platen 3 and the thermal head 4 and a paper feed guide 6 are provided. A curve forming guide 21 is provided between the paper feed roller 5a and the paper feed guide 6 so as to have the running direction of the photographic paper 1 as an axis and to bend the photographic paper 1 around the axis. is there.

[0012]

According to the present invention, the paper feed roller 5a and the paper feed guide 6 are provided.
And a curve forming guide 21 which is curved so as to wind the photographic paper 1 around the axis in the traveling direction of the photographic paper 1.
Since the photographic printing paper 1 is provided, the rigidity of the photographic printing paper 1 in the traveling direction is increased, the bending of the photographic printing paper 1 between the paper feeding roller 5a and the paper feeding guide 6 is suppressed, and the paper jam due to the bending is improved. .

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the video printer of the present invention will be described below with reference to FIGS. 1 and 2, parts corresponding to those in FIG. 3 are designated by the same reference numerals, and detailed description thereof will be omitted.

FIGS. 1A, 1B, 1C show the configuration near the platen 3 and the thermal head 4 of the video printer according to this embodiment. Also in this example, the photographic printing paper 1 is sandwiched between the paper feeding roller 5a and the separating roller 5b, and the photographic printing paper 1 is advanced by the rotation of the paper feeding roller 5a, passes through the paper feeding guide 6, and then the platen 3 and the thermal head. Between 4 and 4, the paper is fed.

Also in this example, the printing paper 1 is used for printing.
Is transferred at a constant speed by the cooperation of the capstan 7 and the pinch roller 8.

The ink ribbon 2 from the ink ribbon supply reel 10 is wound around the ink ribbon take-up reel 13 between the guide roller 11, the platen 3 and the thermal head 4 and the guide roller 12.

In this embodiment, as shown in FIGS. 1 and 2, the printing paper 1 travels between the paper feed roller 5a and the paper feed guide 6 with the running direction of the printing paper 1 as an axis. A bend forming guide 21 that bends so as to wind the paper 1 is provided.

As a concrete example of the curve forming guide 21, it is composed of two guide plates 21a and 21b which are symmetrical to each other as shown in FIG. It has a slanted curve. Others are the same as those of the conventional video printer.

According to the video printer of this embodiment, the platen 3 and the thermal head 4 are separated from the capstan 7 and the pinch roller 8 by a predetermined distance during sheet feeding, as shown in FIGS. 1A, 1B and 1C. , The paper feed roller 5a is rotated, and the photographic printing paper 1 is transported so as to be pushed out to the curving formation guide 21, the paper feed guide 6, the platen 3 and the thermal head 4, the capstan 7 and the pinch roller 8, and the regulation guide 9. .

In this case, in this example, a curve forming guide 21 is provided between the paper feed roller 5a and the paper feed guide 6 with the traveling direction of the photographic paper 1 as an axis and curved around the shaft so that the photographic paper 1 is wound. Since the photographic printing paper 1 is provided, the rigidity of the photographic printing paper 1 in the traveling direction is increased, the bending of the photographic printing paper 1 between the paper feeding roller 5a and the paper feeding guide 6 is suppressed, and the paper jam due to the bending can be improved.

Thereafter, at the time of printing, the printing paper 1 is sandwiched between the capstan 7 and the pinch roller 8 and the capstan 7 is rotated at a predetermined speed so that the printing paper 1 is transported at a predetermined speed and the printing paper 1 The ink ribbon 2 and the ink ribbon 2 are sandwiched between the platen 3 and the thermal head 4 with a predetermined pressure, and electric energy corresponding to a video signal to be printed is supplied to each element of the thermal head 4, and the printing paper 1 is supplied with the video signal. Just like printing an image.

The present invention is not limited to the above-mentioned embodiments, and it goes without saying that various other configurations can be adopted without departing from the gist of the present invention.

[0023]

According to the present invention, the curve forming guide 21 is formed between the paper feed roller 5a and the paper feed guide 6 with the traveling direction of the photographic paper 1 as an axis and curved to wind the photographic paper 1 around the axis. Since the photographic paper 1 is provided with rigidity, the rigidity of the photographic paper 1 in the traveling direction is increased, the bending of the photographic printing paper 1 between the paper feeding roller 5a and the paper feeding guide 6 is suppressed, and the paper jam due to the bending can be improved. There is.

[Brief description of drawings]

FIG. 1 is a configuration diagram showing an example of a main part of an embodiment of a video printer of the present invention.

FIG. 2 is a perspective view showing an example of a main part of FIG.

FIG. 3 is a configuration diagram showing an example of a main part of a conventional video printer.

[Explanation of symbols]

 1 Printing Paper 2 Ink Ribbon 3 Platen 4 Thermal Head 5a Paper Feeding Roller 6 Paper Feeding Guide 7 Capstan 8 Pinch Roller 21 Curve Forming Guide

Claims (1)

[Claims] 1. A video printer in which a printing paper and an ink ribbon are sandwiched between a platen and a thermal head, and electric energy corresponding to a video signal is supplied to the thermal head to print on the printing paper. A paper feed roller and a paper feed guide for feeding the photographic paper between the platen and the thermal head are provided, and the traveling direction of the photographic paper is an axis between the paper feed roller and the paper feed guide. A video printer provided with a curving forming guide that curls so as to wind the printing paper around the shaft.