JPH03268980A - Serial printer - Google Patents

Abstract

PURPOSE:To eliminate the trouble of aligning a sheet to printing position on the part of an operator by insulating printing at a position separate by a set distance from a reference edge identified by an identification device, using a printing device. CONSTITUTION:Information on a distance l from the left end of a sheet is entered by an interface part 5 or a control panel 6, and print data is given by a host computer. Subsequently, the left end position Px of the sheet is detected by a sensor 7. The left end position Px of the sheet is detected each time the sheet is set. A position P at a distance l from the position Px is calculated and print data is used for printing at the position P as the first printing position.

Description

[Detailed description of the invention] [Industrial application fields] The present invention relates to serial printers.

[Conventional Technique #T] FIGS. 4(a), 4(b), and 4(c) are explanatory diagrams showing examples of printing results in a conventional serial printer.

In conventional serial printers, the first printing position is fixed, so when printing the print data "012345" as shown in FIGS. 4(a), (b), and (c),
Printing was performed at a fixed position Pf as the first printing position regardless of the paper position.

[Problems to be Solved by the Invention] In the conventional serial printer described above, the first printing position is identified, so if the operator wants to print at any horizontal position on the paper, the operator must use his own hands and eyes to print. The drawback is that it is necessary to align the print position by setting the paper position and creating print data.

An object of the present invention is to provide a serial printer that does not require the trouble of print position alignment.

[Means for Solving the Problems] The printer of the present invention includes a recognition unit that recognizes the position of a reference edge that is parallel to the paper feeding direction and is the paper edge on the printing start side, and a recognition unit that recognizes the position of a reference edge that is parallel to the paper feeding direction and is the paper edge on the printing start side, and a It has a setting means for setting a certain set distance, and a printing means for starting printing from a position separated from the reference edge by the set distance.

[Operation] The printing means starts printing from a position separated by a set distance from the reference edge recognized by the recognition means.

[Example] Next, an example of the present invention will be described with reference to the drawings.

FIG. 1 is a block diagram showing an embodiment of the serial printer of the present invention, FIGS. 2(a), (b), and (c) are explanatory diagrams showing position management according to the embodiment of FIG. 1, and FIG. 3 (a
), (b), and (c) are explanatory diagrams showing examples of printing results in the embodiment of FIG. 1.

A microprocessor 1 controls the entire serial printer of this embodiment. The lateral feed mechanism 2 is a mechanism that moves the print head 3 in the lateral direction. The paper feeding mechanism 4 is a mechanism for feeding paper. The interface unit 5 inputs information such as print data from a host device (not shown). The operation panel 6 serves as a setting means for inputting timely information such as setting distance from the outside. The sensor 7 is a recognition means for detecting a reference edge (the left edge of the paper) and is installed in the transverse feed mechanism 2.

The microprocessor 1 controls the lateral feed mechanism 2 with a resolution S, as shown in FIG. 2(b).

Said microprocessor 1, cross feeder #! 2, a print head 3, and a paper feed mechanism 4 constitute a printing means.

FIG. 2(b) shows the initial position of the management position in the control of the lateral feed m mechanism 2 of the embodiment. The initial stop position of the print head 3 is Po, and the position p, which is a distance from WP0, is shown in Fig. 2 (a).
) is the initial position of the first printing position. In this case, the distance is an integral multiple of the resolution S, and when La is the distance required for acceleration to obtain the maximum horizontal speed of the print head 3 during printing, 1? :L. Position Py is the right end of the printable range, and printing is performed between position P and position Py. Position PZ is the right end of the movable range of the print head 3; and position P2, and each position P, , P, , PZ is a position that can be managed with resolution S from position P0, that is, n, The position is also position P
. This is the position where the resolution S can be controlled.

FIG. 2C shows the horizontal position managed by the microprocessor 1 when the left edge of the paper is detected at position pw and the first printing position is set at a distance of 1 from the left edge of the paper. Position P8, which is the left edge position of the paper, changes each time the paper is set in the printer. Information on the distance U from the left edge of the paper is input through the interface section 5 or operation panel 6 shown in FIG. Next, when print data is given by the host device, the sensor 7 detects the left edge position of the paper. The sensor 7 is installed in the lateral feed mechanism 2, and detects the left end position of the paper with a resolution S while moving in the lateral direction. It is assumed that detection of the left end position of the next sheet is performed every time a sheet is set. When the left edge position of the paper is detected at position lff1P, from position PX to i
P calculate the position of sλ. Position P0 and position P at this time
When the distance Lb≧L8, print data is printed using position ffP as a new first printing position.

When Lb<L, the first printing position is set as the initial position.

In this way, in this embodiment, when the first printing position is set at a distance from the left edge of the paper and print data "012345" is received, Even if the paper is set to the position , printing is performed from a position 1 distance from the left edge of the paper.

[Effects of the Invention] As explained above, the present invention can automatically print at any horizontal position on the paper by starting printing from the reference edge of the paper and the set distance. This has the effect of eliminating the troublesome task of aligning the print position when printing, and eliminating the need to discard paper due to paper setting errors that occur during print position alignment.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing an embodiment of the serial printer of the present invention, FIGS. 2(a), (b), and (c) are explanatory diagrams showing position management according to the embodiment of FIG. 1, and FIG. 3 (a
), (b), (c) are explanatory diagrams showing examples of printing results in the embodiment of FIG. 1, and FIG. 4 (a), (b)
, (c) is an explanatory diagram showing an example of a printing result in a conventional serial printer. DESCRIPTION OF SYMBOLS 1...Microprocessor, 2...Transverse feed mechanism, 3...Print head, 4...Paper feed mechanism, 5...Interface section, 6...Operation panel, 7...Sensor.

Claims (1)

[Claims] 1. Recognition means for recognizing the position of a reference edge that is parallel to the paper feeding direction and is the edge of the paper on the print start side, and a setting for setting a set distance that is the distance from the reference edge position to the print start position. and a printing device that starts printing from a position a set distance away from a reference edge.