JPH0322113A - Printing position control system - Google Patents

Abstract

PURPOSE:To improve reliability by correcting automatically the dislocation of the printing position of a printer having been changed by temperature change. CONSTITUTION:In the printed result of the printer at room temperature N, the dislocation between a print P1 in the forward direction F of printing and the print P2 in the reverse direction R of longitudinal printing does not appear, but in the range of the environment temperature in low temperature C, disloca tion quantity DELTAL appears between the print P3 in the forward direction F and the print P4 in the reverse direction R2. The temperature detected by a tempera ture detecting thermistor 1 is outputted as a temperature detection signal (a), and the temperature is detected by a detection circuit 2, and the correction quantity of the dislocation quantity DELTAL is determined by a correction circuit 3. Next, a control circuit 4 executes the start control of a control motor 5 for the correction quantity. Thus, the dislocation quantity DELTAL is corrected auto matically accompanied with the change of the environment temperature, and the dislocation of the printing position between the forward direction F and the reverse direction R in the longitudinal printing is corrected by supplying a correction drive signal (b) to the control motor 5. Thus, the reliability can be improved.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a printing position control system, and particularly to a printing position control system for a printing position that causes a shift in the printing position depending on the operating environment temperature.

[Conventional technology]

Conventionally, printing position deviations have been corrected by using switches or the like from the operator panel of the printing device, and operations for correction are performed each time.

[Problem to be solved by the invention]

However, the above-mentioned conventional correction method,
It is necessary to correct misalignment of the printing position every time it occurs, and there is no way to improve the design technology for misalignment that occurs due to temperature changes, especially in low-temperature areas, so the operator must check the printing status and correct the misalignment using a panel switch. It has the disadvantage that it cannot be used.

[Means to solve the problem]

The printing position control method of the present invention includes a temperature sensor that detects the current temperature and outputs a temperature detection signal, a detection circuit that detects the temperature, a correction circuit that determines a correction value, and a detection circuit that generates a correction drive signal. , and a control motor driven by a corrected drive signal.

〔Example〕

Next, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a block diagram showing an embodiment of the present invention, and FIG. 2 is a plan view of a printing result using the embodiment shown in FIG.

The printing position control method shown in FIG. 1 includes a temperature detection thermistor 1, a detection circuit 2, a correction circuit 3, a detection circuit 4,
The control motor 5 is configured to include a control motor 5.

The printing result of the printing device at normal temperature N shown in Fig. 2 shows that there is no discrepancy between the print P1 in the forward direction F of printing and the print P2 in the reverse direction R of vertical printing, but in the area where the environmental temperature is low C. A deviation amount ΔL occurs between the printing P3 in the forward direction F and the stop printing P4 in the reverse direction.

The temperature detected by the temperature detection thermistor l is output as a temperature detection signal a, the temperature is detected by the detection circuit 2, and the temperature is detected by the correction circuit 3.
Determine the amount of correction for the deviation amount ΔL.

Next, the detection circuit 4 performs startup control of the control motor 5 based on the correction amount. As a result, the amount of deviation ΔL is automatically corrected as the environmental temperature changes, and the printing position deviation in the forward direction F and reverse direction R in portrait printing is corrected by supplying the correction drive signal b to the control motor 5. be able to.

In the above-described embodiment, a temperature detection thermistor was used as the temperature sensor, but it goes without saying that any device that can detect the environmental temperature may be used.

〔Effect of the invention〕

The printing position control method of the present invention can eliminate the operator's correction processing operation by automatically correcting the printing position deviation of the printing device that changes due to the operating temperature, thereby improving reliability and reducing the lack of design margin. This has the effect of covering the

[Brief explanation of drawings]

FIG. 1 is a block diagram showing an embodiment of the present invention, and FIG. 2 is a plan view of printing results using the embodiment shown in FIG. 1...Temperature detection thermistor, 2...
Detection circuit, 3... Correction circuit, 4... Detection circuit, 5... Control motor, a... Temperature detection signal, b...・Correction drive signal, P1 to P4...Printing, F...Forward direction, R...Reverse direction, ΔL・
...Amount of deviation, N...Normal temperature, C...
·low temperature.

Claims (1)

[Claims] In a printing device in which printing position shifts due to expansion or contraction of a mechanism due to environmental changes, there is provided a temperature sensor that detects environmental temperature and outputs a temperature detection signal, a detection circuit that detects the temperature detection signal, and the temperature detection signal. a correction circuit that calculates a correction amount based on the correction amount, a control circuit that generates a correction drive signal based on the correction amount, and a control motor that automatically corrects the printing position using the correction drive signal and follows temperature changes. A printing position control method comprising: