JPH01280577A - Printer - Google Patents

Abstract

PURPOSE:To enable printing at a fixed position relative to an end part of a sheet even on variations in the width of the sheet, by setting a sheet width by a setting means, inputting the distance of a printing position from the end part of the sheet by an input means, adding an effective printing width of a head, and calculating the value of a predetermined formula by a calculating means. CONSTITUTION:A calculating means 7 is connected to a setting means 5 for setting a sheet width L1, and the sheet width is inputted. An input means 6 is used for inputting the distance (b) of a printing position B from an end part of the sheet width. The setting means and the input means are connected to a calculating means for calculating the printing position (L2-L1/2+b), where L2 is an effective printing width of a head, from the sheet width L1 and the distance (b). Further, a printing means 8 is connected to the calculating means, and a storing means 9 for storing an image position and an image is connected to the printing means. With this construction, the value of (L1-L2/2+b) is calculated by the calculating means, and printing is conducted at the position (L1-L2/2+b) distant from the end part of the head, so that it is possible to print at a fixed position relative to the end part of the sheet, irrespective of the width of the sheet.

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Field of Industrial Application) The present invention relates to a printer that prints a barcode on a label, for example.

(Prior Art) In conventional printers that print barcodes, characters, etc., when setting the position to start printing on the sheet 1, the reference coordinates are set at the end of the thermal head 2 as shown in FIG. There is.

Then, to print at position fffB, which is b away from the left edge of the sheet, add the printing position B to the position HA, which is a distance from the left edge of the effective printing width of the thermal head 2 where sheet 1 is placed. The print position is set by inputting the position, that is, the distance a+b, which is the position A+8 from the end of the effective print width.

(Problem to be solved by the invention) However, there are various thicknesses of sheets, and
The center of the sheet must be aligned with the center of the effective print width of the thermal head, so if the sheet size changes, the print position will change even if you try to print at the same distance from the edge of the sheet. I have a problem.

The present invention has been made in view of the above problems, and an object of the present invention is to provide a printer that can print at a constant position from the edge of the sheet width even if the width of the sheet changes.

[Structure of the invention]

(Means for Solving the Problems) The present invention provides a printer that aligns the center of a sheet with the center of a head and stores an image position to be printed in advance and prints. a storage means for storing a position and an image; an input means for inputting a position B@distance 1b from the end of the sheet width of the sheet to be printed; and an effective print width of the head is Ll; The image forming apparatus includes a calculation means for calculating the width [, 1 and the input means, and a printing means for printing the stored image calculated by the calculation means.

(Function) The present invention has a distance of 1llffbllllff from the edge of the sheet.
When printing on 11B, the sheet width [1
, input the distance from the edge of the sheet to position B to be printed using the input means, calculate the effective print width of the head, and print an image with the distance from the end of the effective print width of the head using the printing means. It is something.

(Embodiment) An embodiment of the printer of the present invention will be explained below with reference to the drawings.

Note that the same parts as in the conventional example will be described using the same reference numerals.

In FIG. 1, reference numeral 5 denotes a setting means for setting the sheet width 1 of the sheet 1, and this setting means 5 is constituted by, for example, a yard board for manual input, a transmission type sensor or a reflection type sensor υ for detecting the width of the sheet 1. has been done. A calculation means 7 is connected to the setting means 5, and the sheet width L1 is input thereto. Further, in the input means 6, a distance 1b of MB from the edge of the sheet width to be printed is input. Then, when the effective printing width of the thermal radar 2 is set to [2], the distance Il! between the sheet width L1 set by the setting means 5 and the printing position UB inputted by the input 1 stage 6! ib and {(L Lt+
A setting means 5 and an input means 6 are connected to the performance means 7 for performing b). Roughly speaking, a printing means 8 comprising, for example, a thermal head 2 and a drive device (not shown) is connected to this calculating means 7, and this printing means 8 also has a storage stage 9 for storing image positions and images. It is connected.

When printing, the center of the sheet 1 is aligned with the center of the thermal head 2, and the position B at which printing is to be started is input using the input means 6 using the left end of the sheet 1 in the width direction as a reference.

As a result, the setting means 5 detects the width of the sheet and
Detects the width L1 of the thermal head 2, uses the effective printing width L2 of the thermal head 2, and uses the distance device of the input printing position B to sequentially print images at image positions stored in the storage means 9, which is a frame buffer, for example, by the printing means 8. draw.

〔Effect of the invention〕

According to the present invention, printing is performed at a position where the sheet width is Ll, the effective printing width of the head is L-2, and the printing distance from the edge of the sheet width, so regardless of the sheet width, the printing distance is Printing can be done at a fixed position from the edge.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of an embodiment of the present invention, FIG. 2 is an explanatory diagram showing the positional relationship between the head and the sheet, and FIG. 3 is an explanatory diagram showing the positional relationship of the conventional example. 1... Sheet, 2... Head, 5... Setting means, 6...
Input means, 7. Calculation means, 8. Printing means, 9. Storage means. Difference"1

Claims (1)

[Claims] (1) In a printer that aligns the center of a sheet with the center of a head and stores in advance an image position to be printed, the printer includes a setting means for setting the width L_1 of the sheet, a storage means for storing the image position and the image; an input means for inputting a distance b of a position B from the edge of the sheet width of the sheet to be printed; an effective print width of the head is L_2; a sheet width L_1 from the setting means and a distance b from the input means; a calculation means for calculating a print position {(L_1-L_2)/2+b} by the calculation means; and a printing unit for printing an image stored in the storage means at the print position {(L_1-L_2)/2+b} calculated by the calculation means. A printer characterized by comprising means.