DE2127435A1 - Printing device for data carriers - Google Patents

Description

THE NATIONAL, CASH REGISTER COMANY

Dayton , Ohio V.St .A.

Patent application

Our reference: 1298 / Germany

DRUCKVORRICHT UNG FO R MEDIA

The invention relates to a printing device for transferring dye from a dye carrier a disk.

The printing device can be used for printing strips of color on data carriers, e.g. labels, the Color strips represent encoded data. Such printed labels can then be used by semi-automatic mark readers are evaluated, i.e. read, in sales and dispatch points are used by wholesalers and retailers, for loan sales, inventory work, etc. The label provided with the coded data representing the coded data can, for example, be attached to the goods to be sold and will be through a optical reading pen, which is guided by hand directly over the label during the reading process.

In order to meet the print quality required for reading markings with the optical reading pen, i for printing the label a printing ribbon with a dry ink, i.e. a so-called dry ink ribbon is used. Ribbons of this type have the advantage that the dye after Pressure is no longer easily caused by scratching, scraping or the like. can be removed. However, are with the dry ribbons high print hammer impact forces are required to transfer the dye from the ribbon to the label.

The object of the invention is therefore to provide a simply constructed printing device for printing of strip-shaped markings on a data carrier using a printing ink provided with a dry ink

May 28, 1971 109883/1583

t'arbbandes as a dye of ft rager.

Accordingly, the invention is based on a printing device for transferring dye from a dye carrier to a data carrier, with a print hammer, the during a printing operation along a predetermined Train moves.

The invention is characterized in that the print hammer has a front part with a convex printing area, and that in the path of movement of the front part a resiliently mounted, the data carrier receiving support plate is provided against which the print hammer during movement along its predetermined path fc strikes and this deflects, the front part essentially in linear contact with the Support plate comes and rolls on this.

An exemplary embodiment of the invention is described below with reference to the drawing. In this shows:

Fig. 1 is a plan view of a data carrier that is produced by the printing device according to the invention with color code strips is printed

2 shows a schematic side view of a printing hammer and an associated support plate for the data carrier with representation of the pressure hammer in a position in which it was first used with the platen during its pressure stroke comes into contact with the system, and

) | FIG. 3 is a side view similar to FIG. 2, but with representation of the pressure hammer in a position which it assumes at the end of its pressure stroke, with the deflection the platen is shown greatly exaggerated.

FIG. 1 shows a typical data carrier 16 which has been printed by the printing device shown in FIGS is. Said data carrier 16 is designed as a label in the present invention and contains a plurality of continuously adjoining colored stripes, where each color stripe has a different color in relation to it the color of its immediate neighbors. Color stripes on

May 28, 1971

109883/1583

shows. The colors used for label 1 (5 are green Black 18 and White 19. The green and black Dye-Treil'on are printed over a white background so that the white stripes of color are defined by those curses in which neither green and black colored stripes are printed out.

The printing device shown in more detail in Figs. 2 and 3 includes a print hammer 20 and a platen 21. The platen 21 is exposed by a flat end portion of a formed away projecting leaf spring 22, which is attached to a holder by means of a screw 24. That too printing label 25 and a printing ribbon 26 are in position between the print hammer 20 and the platen 21. The printing ink ribbon 26 is a so-called dry ink ribbon. Both the label 25 and the print ribbon 26 are movable in a direction which is perpendicular to the plane of pivoting of the print hammer 20, which is through a Drive device (not shown.) Is actuated. The print hammer 20 can be pivoted about a shaft 27 which is mounted parallel to the direction of further movement of the label 25 The movement of the printing hammer 20 during a printing stroke runs on a circular arc.

The front part 28 of the print hammer 20 has the shape of a Part of a circular cylindrical surface. The front part 28 is used to print the label 25 with a strip a first color (e.g. black or green), as indicated by the color stripes 17 or 18 in the label 16 of FIG is illustrated. The same printing device (not shown) is used to print strips of a second color. The forehead strikes during a printing operation of the printing hammer 20 first with its one end against the printing ribbon 26, the label 25 and the platen 21, as illustrated in FIG. During the further movement of the print hammer in the course of its printing stroke 20 this describes a circular arc and thereby causes the support plate 21 to bend. The bend the platen 21 allows the convex shape Front part 28 of the printing hammer 20 rolls on the front side of the support plate 21, the front part 28 having a linear

May 28, 1971 10 9-8 83/1583

shaped An lageberühiimg mi ', the Λ ·> ί i ί ·. f.'ep-j al te 21 brings and thereby a friction o <is -r scissors f "fect between the print hammer 20 and the Au Γ lagoplat t ο 21 generate! . this promotes and improves the transfer of the dye on the label 25.

From the arrangement and mode of operation described above of the printing device it follows that the Γίι - line of contact between the convex end part 28 of the print hammer 20 and the support plate 21 migrates over the end part 28 during a printing process. In Fig. 3 are the end positions of the print hammer 20 and the bent Support plate 21 shown in solid lines. on this way, a complete staining streak becomes printed out. At the contact line between the print hammer 20 and the platen 21 is high pressure generated, which is sufficient to the dye of the printing ribbonos 26 to be transferred to the label 25 with a relatively low print hammer force. Rubber damper (not shown) can be provided below the support plate 21, to support the latter against the action of the print hammer, so that vibrations on the platen 21 as a result the action of the print hammer 20 may occur can be dampened. Using the printing device according to the invention can thus color strips on the Label can be printed, the printing device being relatively simple in construction and operation excels.

May 28, 1971

1 09883 / 1B83 U _{0 0! MmAL}

Claims (4)

Pa t: ent a nsprü che: Q. Printing device for transferring dye from one Iarhstofft rager on a data carrier, with a print hammer, the see during a printing operation along a predetermined immten web moves, characterized in that the print hammer (20) an end part (28) with a convex pressure surface has, and that in the movement path of the front part (28) a resiliently mounted, the data carrier (25) receiving Support plate (21) is provided against which the print hammer (20) strikes during the movement along its predetermined path and deflects this (21), the front part (28) essentially in linear contact with the Support plate (21) comes and rolls on this. 2. Printing device according to claim 1, characterized in that the end part (28) of the printing hammer (20) has the shape part of a circular cylindrical surface. 'i. Printing device according to claim 1 or 2, characterized in that the support plate (21) is formed by a flat section of a freely protruding leaf spring (22). 4. Printing device according to one or more of the preceding Claims, characterized in that the front part (28) of the printing hammer (2O) describes an arcuate path of movement during a printing operation. 109883/158 Lee r side