JPH02121867A - Printer - Google Patents

Abstract

PURPOSE:To enable accurate printing output by setting the shift of a homing position to a lower level by mounting a control apparatus receiving the signal from a homing sensor to control a carrier motor and a printing head. CONSTITUTION:In performing printing, a carrier having a printing head 1 mounted thereon performs carrier homing at first. When the signal reaching a homing position is emitted by a homing sensor 3 to be received by a homing sensor detection part 11, a signal is emitted to a printing position correction part 12 from the detection part 11. The position correction part 12 indexes the position of the sensor from the receiving time and the signal sent from a carrier motor control part 13. Next, when the carrier motor control part 13 emits a signal to the position correction part 12 at the time of printing, the position correction part 12 calculates the time from the point of time when the carrier begins to move to the point of time when the printing head 1 reaches the first printing position and starts the first printing at the point of time when said time is elapsed after the motor control part 13 emits the signal for moving the carrier.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a printer device, and particularly to a printer device that can effectively control the position of first printing before and after homing the printer head.

[Conventional technology]

Conventionally, in this type of printer device, the head section is driven by a stepping motor, and the homing position is determined by a homing sensor. The first printing position was a fixed length from the homing position.

[Problem to be solved by the invention]

However, in the above conventional example, since the first printing position was a fixed length from the homing position, there was a drawback that if a "shift" occurred in the homing position, the first printing position would be shifted. Further, even when adjusting the interval between the first printing position and the homing position, there is a problem in that it is not possible to suppress the "shift" of the homing position to within the step angle of the stepping motor.

[Purpose of the invention]

An object of the present invention is to provide a printer that improves the inconveniences seen in the conventional example, sets the "shift" of the homing position to be smaller than the conventional printer, and thereby makes it possible to achieve accurate print output. The goal is to provide equipment.

[Means to solve the problem]

The present invention includes a printer head that performs printing, a carrier motor that drives a carrier on which the printer head is mounted, a homing sensor that detects the homing position of the printer head, and a carrier motor and a homing sensor that receive signals from the homing sensor. It is equipped with a control device that controls the printer head. This control device includes a homing sensor detection section that receives a signal from the homing sensor, a print position correction section that corrects the print position in response to a command from the homing sensor detection section, and a homing sensor detection section that receives a signal from the homing sensor. a carrier motor control unit that controls the movement of the carrier motor according to commands;

This method includes a printer head control section that controls printing by the printer head based on commands from a print position correction section.

This aims to achieve the above-mentioned objective.

[For production]

When printing, a carrier equipped with a printer head first performs carrier homing. At this time, the firmware of the print position correction section, homing sensor detection section, and carrier motor control section in the microprocessor is activated. During carrier homing, the homing sensor emits a signal indicating that the homing position has been reached, and when the homing sensor detection section receives the signal, the homing sensor detection section issues a signal to the print position correction section.

When the printing position correction unit receives the signal, it calculates the position where the homing sensor has issued the signal based on the time when this signal was received and the signal indicating the position of the carrier sent from the carrier motor control unit, and at the same time A signal is sent to the motor control unit to stop the carrier motor.

Next, when printing is performed, the carrier motor control section issues a signal to the printing position correction section indicating that the carrier has started moving. The print position correction unit calculates the time from when the carrier carrying the printer head starts moving until the printer head reaches the first print position from this signal and the previously calculated position where the homing sensor issues the signal. . When this time has elapsed since the carrier motor control section issued the signal to move the carrier, the printing position correction section sends a signal to the printer head control section to start the first printing.

[Embodiments of the invention]

An embodiment of the present invention will be described below with reference to FIG.

In the embodiment shown in FIG. 1, a printer driver 1 that performs printing, a carrier motor 2 that drives a carrier (not shown) on which this printer head 1 is mounted, and a homing position of the printer head 1 are detected. The printer includes a homing sensor 3 and a control device 4 that receives signals from the homing sensor 3 and controls the carrier motor 2 and the printer head 1. The control device 4 includes a homing sensor detection section 11 that receives a signal from the homing sensor 3, and a print position correction section 12 that corrects the print position in response to a command from the homing sensor detection section 11.
and a carrier motor control unit 13 that controls the movement of the carrier motor 2 based on commands from the print position correction unit 12.
and a printer head control unit 14 that controls printing by the printer head 1 based on instructions from the print position correction unit 12.
The configuration is such that the microprocessor 10 consists of the following.

Next, the operation of this embodiment will be explained.

When printing, the carrier (
(not shown) first performs carrier homing. At this time,
Print position correction section 12 within the micropro sensor 10. The firmware of the homing sensor detection unit 11° carrier motor control unit 13 is activated. When the homing sensor 3 emits a signal informing that the homing position has been reached during carrier homing, and the homing sensor detection section 11 receives the signal, a signal is emitted from the homing sensor detection section If to the print position correction section 12.

When the print position correction unit 12 receives the signal, it calculates the position where the homing sensor 3 emits the signal based on the time when the signal was received and the signal sent from the carrier motor control unit 13, and simultaneously controls the carrier motor. 13 to stop the carrier motor 2.

Next, when printing is performed, the carrier motor control section 13 issues a signal to the printing position correction section 12. Based on this signal and the previously calculated position from which the homing sensor 3 issued the signal, the print position correction unit 12 determines that when the carrier (not shown) on which the printer head 1 is mounted begins to move, the printer head 1 is moved to the first print position. Calculate the time it takes to reach . When this time has elapsed since the carrier motor control unit 13 issued a signal to move the carrier (not shown), the print position correction unit 1
2 sends a signal to the printer head control section 14 to start the first printing.

Printing is performed in this manner, and when printing for -line is completed and a line feed is performed, the above-mentioned homing is performed again.

With the above operation, the deviation of the first printing position is only the error of the homing sensor 3 and the vibration of the carrier motor 2.
The error is much smaller than the conventional error.

〔Effect of the invention〕

Since the present invention is configured and functions as described above, the distance between the homing position and the first printing position is not fixed as in the conventional example, but can be made variable. Therefore, it is possible to provide an unprecedented and excellent printer device in which the deviation of the first printing position before and after homing can be made sufficiently smaller than the step angle of the stepping motor in the conventional example.

Figure 1

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing one embodiment of the present invention. 1... Printer head, 2... Old carrier motor, 3... Homing sensor, 1o...
...Microprosenona, 11...Homing sensor detection section, 12...Print position correction section, Engineering 3
...Carrier motor control section 14...
・Printer head control unit.

Claims (1)

[Claims] (1) A printer head that performs printing, a carrier motor that drives a carrier equipped with this printer head,
a homing sensor that detects a homing position of the printer head; and a control device that receives a signal from the homing sensor and controls the carrier motor and the printer head; A homing sensor detection section that receives the signal, a print position correction section that corrects the print position in response to commands from the homing sensor detection section, and a carrier motor control section that controls the movement of the carrier motor based on the commands from the print position correction section. A printer device comprising: a printer head control section that controls printing by the printer head according to commands from the print position correction section; and a load.