JPS6211664A - Apparatus for adjusting printing position in label printer - Google Patents

Abstract

PURPOSE:To make it possible to simply adjust a printing position even if the size of a label changes, by setting the blank feed time of a label and performing the printing of the label after the elapse of the blank feed time. CONSTITUTION:The relative position of a thermal head 6 and a label sensor is set so that the writing start position of a label 3 of a stop state is positioned sufficient rearward from the heat generating element group of the thermal head 6 in the feed direction of the label 3 and both of them are preliminarily fixed. Then, the blank feed time T of the label is set and inputted by a ten-key on the basis of a distance A changing corresponding to the size of the label and preliminarily stored in the memory of an operational control part in a registering mode. After the registering mode was transferred to a printing processing mode, the label is subjected to blank feed by the set time T prior to starting the printing of the label. By this method, the writing start position of the label having any size can be adjusted to a desired position while the position of a label sensor is fixed.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a printing position adjustment device in a label printer.

(Prior Art and its Problems) In weighing devices and the like, necessary items such as the weight, unit price, price, date of processing, and effective date of the product to be weighed are printed on a label by a printer.

Such a label printer is arranged as shown in FIG.

FIG. 5(1) shows an example in which the label sensor 1, which determines the stop position of the label with respect to the feeding direction of the label 3 pasted on the mount 4 in the arrow direction, is arranged behind the printing machine 2. The label 3 on which predetermined items are printed by printing 4!12 is separated from the mount by the peeling machine 5 and affixed to the article to be weighed.

FIG. 5(2)-1 shows an example in which the label sensor 1 is placed in front of the printing machine in the feeding direction of the label 3 in order to use it as a peeling sensor for detecting label peeling. This is a case where a constant pitch is provided between the labels 3.

5(2)-2 differs from the example shown in FIG. 5(2)-1 in that there is no pitch between the labels 3.

FIG. 4 is an explanatory diagram showing the arrangement relationship between the printing machine 2 and the thermal head 6 with respect to the conventional label 3.

Conventionally, printing is started almost simultaneously with the start of label feeding, so when label feeding is completed, as shown in the figure, the heating element array of the thermal head 6 for the next label 3 is indicated by line C in the figure. I had set it so that it would be at the writing start position. Therefore, if the label size changes and the printing position on the label changes, move the position of the label sensor, which determines the label stop position, back and forth and test it several times to make sure that the label sensor does not misalign. I adjusted the positional relationship between 1 and the thermal head. Therefore, there was a problem in that a complicated operation was required to set the position of the label sensor l.

(Object of the Invention) The present invention aims to solve the problems of the prior art, and provides a print position adjustment device for a label printer that allows the print position to be easily adjusted.

(Summary of the invention) The print position adjustment device in the label printer of the present invention includes:
The apparatus includes a means for transporting the label to a predetermined position, a printing machine for printing predetermined items on the label, a means for controlling the transport means and the printing machine, and an input means for setting a label idle feeding time.

The present invention is characterized in that the label is transported and printing is performed on the label after the idle feeding time has elapsed.

(Example) Hereinafter, an example of the present invention will be described with reference to the drawings. FIG. 1 is a schematic configuration diagram of the present invention, FIG. 2 is a flowchart, and FIG. 3 is an explanatory diagram illustrating the positional relationship between the label and the thermal head before starting label feeding. The A/D-converted weight, signals from a key input device, etc. are input to the arithmetic control section, and a predetermined signal is output to the label printer display device. In FIG. 3, the relative positions of the thermal head 6 and the label sensor are determined so that the label writing position in the stopped state is located sufficiently behind the heating element array of the thermal head 6 in the label feeding direction. In other words, in the case shown in Fig. 5 (1), the positional relationship shown in Fig. 3 is established based on the maximum size of usable labels. In the case of the one shown in Fig. 5 (2), the heating element row of the thermal head and the detection position of the label sensor are positioned so that the distance between them is constant, regardless of the label size. Then, using a numeric keypad or the like, set and input the label empty feeding time T according to the distance A, which changes depending on the label size. This idle feed time T is stored in advance in the memory of the arithmetic control section in the registration mode.

The label blank feed time differs depending on the size of the label, the printed content, etc., so the blank feed time can be adjusted in steps of 1 to 10, for example. When registering in advance, use the numeric keypad (not shown) to enter the numbers 1 to 10. After entering the number, press the special key for adjusting the print position.

After shifting to the print processing mode, the label is fed for a set time T, and then label printing is started. This allows the writing start position to be adjusted to a desired position while keeping the label sensor position fixed for any label size.

Next, the processing procedure of the present invention will be explained with reference to the flowchart shown in FIG. Note that this operation is performed when the arrangement shown in FIG. 5(2) is used.

(1) When printing, first operate the label feed motor to transport the label (step P1), then check whether the label sensor has detected the label (step P2).
), if no label is detected, repeat the processing of the label detection routine for a certain period of time (step P4), if the time has elapsed, execute error display processing (step P5), stop the label feed motor (step Pto) - ( 2) If a label is detected, set the empty feed time T. Step P3), while decrementing the set time,
Repeat the loop process until T=0 (step FB
, P7).

If you confirm that the set time T = 0, the heating element array has reached the label writing start position, so perform the printing process on the label (step 2) and detect the trailing edge of the label ( Step P9), stop the label feed motor (Step P10). The trailing edge of the label is detected by steps (2)-1 and (2) in Figure 5.
This step is not performed when the label sensor is arranged as in )-2. In this case, the label feed motor is stopped after a predetermined period of time has elapsed after printing is completed.

(Effects of the Invention) As described above, according to the present invention, the writing start position of the label can be adjusted without adjusting the position of the label sensor, and furthermore,
Even if the label size changes, the printing position can be adjusted easily and accurately, making the adjustment operation extremely easy and also having the advantage of reducing the number of trial prints.

[Brief explanation of the drawing]

Fig. 1 is a schematic configuration diagram of the present invention, Fig. 2 is a flowchart, Figs. 3 and 4 are explanatory diagrams of the positional relationship between the label and the thermal head, and Fig. 5 is an explanatory diagram of the arrangement of the label sensor. be. DESCRIPTION OF SYMBOLS 1... Label sensor, 2... Printing machine, 3... Label, 4... Mounting paper, 5... Peeling machine, 6... Thermal head. Figure 1 Figure 2 ν (″4

Claims (1)

[Claims] The apparatus is equipped with a means for transporting the label to a predetermined position, a printing machine for printing predetermined items on the label, a means for controlling the transport means and the printing machine, and an input means for setting a blank feed time for the label. 1. A printing position adjustment device for a label printer, characterized in that printing is performed on a label after the empty feeding time has elapsed.