JPS5919185A - Small printer - Google Patents

Abstract

PURPOSE:To make it possible to print a sharp character, by a method wherein a brush is brought into contact with the type of a printer for rotating a type wheel having plural types at a predetermined position to press the corresponding type to paper to clean the types. CONSTITUTION:A brush 8 is provided so as to be contacted with the type 2 of the type wheel of a printer. The brush 8 is a cylindrical one having plural bristles in a radial configuration and pref. arranged so as to be driven and rotated by rotating the type wheel. This brush 8 is pref. attached to the frame body 9 of an inking means 3 freely detachable to the printer.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a small-sized printing machine used for prints, sheets, etc., and in particular, ink rolls, etc., are used for type having elasticity such as rubber, which has been frequently used in recent years to provide low power consumption and high print quality 9F. It is related to a small printing machine that inks directly with paper and prints by pressing directly onto paper.

In a conventional small-sized printing press of this type, as shown in FIG. 4, the type 2 on a type wheel 1 rotated many times by a selection means (not shown) is inked by an ink roll 3 serving as an inking means. Printing is performed by contacting and pressing the printed characters 2 of J9r with the paper 5 using a hammer 4, which is a printing means. In a small printing machine having such a configuration, since the paper 5 and the type 2 come into face-to-face contact, paper dust generated and present on the paper 5 during the paper manufacturing process, paper feeding, and printing process is shown in No. 5N. As shown in 6 of the cross section N of the type 2, it has the disadvantage that it mixes with ink and becomes a highly viscous scum that adheres to the type 2, resulting in smearing of the print after long-term use, resulting in unclear print quality. Ta.

In order to solve the drawbacks of the present invention, a means for cleaning the type 2 is provided to prevent paper dust from the recording paper from mixing with ink from the ink roller and adhering to the type on the type wheel.
The purpose is to achieve clear print quality.

The figure shows an embodiment of the cleaning means of the present invention, in which a large number of bristles 8 made of nylon monofilament or wild animal hair are sandwiched between two core wires 7 and twisted into a spiral shape. It is essentially the same as commercially available cleaning brushes for test tubes, etc.

FIG. 2 shows an embodiment of the configuration of a small-sized printing press including the cleaning means. 1 is the type wheel, 2 is the type, 3 is the ink roll, 4 is the hammer, 5 is the printing paper, 7 is the core line of the brush, 8
is a brush. The core wire 7 is pivotally supported by a frame (not shown) that rotatably supports the type wheel 1, and the brush 8 contacts the type 2 while maintaining an appropriate mesh f#, and the brush 8 is in contact with the type 2 by the arrow A of the type wheel 1.
The structure is such that the rotation in the direction of arrow B causes rotation in the direction of arrow B.

The printing operation is the same as the conventional example, but after the printing process is completed, the type 2 comes into contact with the brush 8, and the bristles of the brush 8 sink into the recesses of the type 2, removing dirt attached to the type 2. Therefore, even after a long period of use, or even if paper with a high amount of paper dust found in overseas papers is used, no dirt will accumulate on the type 2, and the print will remain clear.

Usually, the deposits removed by the brush 8 are scattered in the direction of arrow C when the type 2 and the brush 8 are separated due to the complementarity of the brush 8 itself, and the brush 8 has a self-cleaning function.

Further, if the core wire 7 of the brush 8 is pivotally supported on the frame 9 of the detachable ink roll 3 as shown in FIG. 3, the brush itself is also detachable, making replacement and cleaning easy.

Furthermore, as an effect of the present invention, since the brush 8 is always in contact with the type wheel, ink is collected from the type that was inked by the ink roll 3 but not printed, and the ink is removed from the surface of the type by printing. Clean the printed type before reapplying. Therefore, the brush 8 acts as an auxiliary ink roll and enables uniform inking on the type wheel 1.
-L.

As explained above, according to the present invention, the type is constantly cleaned and inked uniformly, so that a small-sized printing press that can print clearly can be provided.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing an embodiment of the cleaning means of the present invention, FIGS. 2 and 3 are side sectional views showing the structure of the present invention, and FIGS. 4 and 5 are side sectional views of a conventional example. 1 - Type wheel 2 - Type 3 - Ink roll 4 - Hammer 5 - Paper 7 - Brush core wire 8 - Brush 9 - Ink roll frame and above Applicant Shinshu Seiki Co., Ltd. Agent Patent Attorney Mogami Figure 1 Figure 2

Claims (1)

[Scope of Claims] A type wheel having a plurality of type characters, a selection means for rotating the type wheel to a predetermined printing position, an inking means for applying the type ink, and a combination of the type and paper. 1. A small-sized printing machine having a printing means for printing by direct contact and pressing, characterized in that the small-sized printing machine has a brush that comes into contact with the type. (2) The small-sized printing press according to claim 1, wherein the brush has a cylindrical shape having a large number of bristles in the radial direction, and is rotated by being driven by the rotation of the type wheel. (31) A small-sized printing press according to claim 1, wherein the brush is attached to a frame of an inking means that is detachable from the printing press.