JPH03297677A - Automatic head angle regulator - Google Patents

Abstract

PURPOSE:To provide an automatic head angle regulator wherein a printing face and a printing character can be confirmed at an operation of a handy printer and print forward direction is regulated to obtain a stable printing with good quality by arranging a rectangular parallelepiped roundish at angles which contact with a matter to be printed vertically having an axis of rotation thereon and a rubber belt which rotates on the periphery of the rectangular parallelepiped. CONSTITUTION:An automatic head regulator is fixed by an axis of rotation 6 and constituted of a rectangular parallelepiped 5 roundish at angles which contact with a matter to be printed 11 vertically even if a handy printer body 1 slants and a rubber belt 4 of which the back face is processed so as to reduce the friction coefficient and rotates about the block 5. The handy printer body 1 is pressed to the matter to be printed 11 with a force at an arrow A and operated manually in the direction of an arrow B so as to rotate the rubber belt 4 about the rectangular parallelepiped 5. The rotation of the rubber belt 4 is transferred to an encoder 11 which generates a timing pulse in accordance with a quantity of the rotation of the rubber belt 4. A data corresponding to the timing pulse is transferred to a thermal head 7 so as to print on the matter to be printed 12 through a transfer ribbon 2.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field 1] The present invention relates to an automatic head angle adjustment mechanism for a handy printer that prints characters, images, etc. while manually scanning.

[Conventional technology j] In the conventional head angle automatic adjustment mechanism, the central axis is placed at a location away from a line perpendicular to the printing object, which is set up at the point where the thermal head comes into contact with the printing object, and I was adjusting the head angle in the stacking direction.

[Problem to be solved by the invention] In the conventional automatic head angle adjustment mechanism, the printing mechanism is large because the central axis for adjusting the head angle is located at a location away from the location where the thermal head contacts the printing material. . In addition, since the center axis of the head angle adjustment mechanism with respect to the printing progress direction is the same axis as the rotational axis of the spring that generates the load on the thermal head against the printing target, the adjustment angle changes the pressing force of the thermal head against the printing target. There is a problem in that a mechanism is required to prevent the tilt from occurring beyond a certain level, and the printing quality is also inconsistent.

In view of these problems, the object of the present invention is to provide an automatic head adjustment mechanism for the print advancing direction that uses an extremely small and simple mechanism, allows confirmation of the printed surface and printed characters when scanning with a handy printer, and stabilizes print quality. Our goal is to provide the following.

[Means for Solving the Problems 1] In order to solve the above-mentioned problems, a handy printer is provided that prints characters, images, etc. while manually scanning them using a thermal head in which a plurality of printing elements of the present invention are arranged in a row. The automatic head angle adjustment mechanism is designed so that when the handy printer is tilted diagonally with respect to the printing progress direction during printing, the thermal head contacts the printing material at a constant angle and pressing pressure. It is characterized by providing a rectangular parallelepiped with rounded vertical corners and a rotating shaft at the top, and a rubber belt that rotates around the rectangular parallelepiped.

[Examples] Examples of the present invention will be described below with reference to the drawings. FIG. 1 is a sectional view of a hump tube 3-linter according to an embodiment of the present invention. The automatic head adjustment mechanism of the present invention is fixed by a rotating shaft 6, and even if the handy printer main body 1 is tilted diagonally with respect to the traveling direction, the head automatic adjustment mechanism of the present invention is fixed by a rectangular parallelepiped 5 with rounded corners perpendicular to the printing material 12 and the back surface. It is constituted by a rubber belt 4 that rotates during manual scanning around the block 5, which has been treated to reduce the coefficient of friction.

The automatic head adjustment mechanism of the present invention will be explained below.

The rubber belt 4 rotates around the rectangular parallelepiped 5 by pressing the handy printer main body 1 against the printing material 12 with the force of arrow A and manually scanning in the direction of arrow B. The rotation of the rubber belt 4 is transmitted to the encoder 11,
A timing pulse corresponding to the amount of rotation of the rubber belt 4 is generated from the encoder 11. Necessary data such as characters and images according to the timing pulse is transferred through the FPC 8 to the thermal head 7 which is pressed against the printing material 11 with a constant pressure by the head pressing spring 9, and transferred to the thermal head 7 via the transfer ribbon 2. Necessary characters, images, etc. are printed on the printing material 12.

4- By setting the coefficient of friction between the printing substrate 12 and the transfer ribbon 2 to be larger than the coefficient of friction between the thermal head 7 and the transfer ribbon 2, rotation of the rubber belt 4 during printing by manual scanning is prevented. It will be drawn out in conjunction with. The drawn-out transfer ribbon 2 is wound up into the handy printer main body 1 by the rotational force of the rubber belt 4.

As shown in FIGS. 2(a), (b), and (c), even if the handy printer main body 1 falls forward or backward with respect to the direction of travel during manual scanning in the direction of arrow C, the rectangular parallelepiped 5 It is always perpendicular to the printing medium 12 through the rubber belt 4 with the rotating shaft 6 as the axis.

At this time, since the thermal head 7 is fixed to the rectangular parallelepiped 5, it also contacts the printing medium 12 perpendicularly.

Although the thermal head 7 in this embodiment is an edge type one manufactured with a thickness of 3 mm or less, it is also possible to use a normal thermal head. Also, the width of the rectangular parallelepiped 5 is 10
About III11 is good.

[Effects of the Invention] As explained above, according to the configuration of the present invention, when printing with a handy printer that prints characters, images, etc. while manually scanning, stable and good printing, printing position, printing surface, and printing can be achieved. To facilitate immediate confirmation of a termination character.

[Brief explanation of the drawing]

FIG. 1 is a sectional view of an automatic head adjustment mechanism according to an embodiment of the present invention. FIGS. 2(a), 2(b), and 2(c) are side views of an example of the operation of the automatic head adjustment mechanism. Handy printer main body transfer ribbon heat dissipation plate rubber belt rectangular parallelepiped 6-6 ・ 7 ・ 8 ・ 9 ・ 0 1 ・Rotating shaft・Thermal head・FPC ・Head pressing spring ・・Encoder・・Printed material and above

Claims (1)

[Claims] In the head angle automatic adjustment mechanism of a handy printer that prints characters, images, etc. while manually scanning using a thermal head in which a plurality of printing elements are arranged in a row, the handy printer is configured to a rectangular parallelepiped with rounded corners perpendicular to the printing material and a rotation axis at the top so that the thermal head contacts the printing material at a constant angle and pressing pressure when the thermal head is tilted diagonally; An automatic head angle adjustment mechanism featuring a rubber belt that rotates around the head.