JPS62244655A - Impact type serial printer - Google Patents

Abstract

PURPOSE:To improve the mechanical operational inferiority of a printing head to a large extent, by controlling a printing speed so as to decrease the same only when a control part confirms definite temp. or less on the basis of the signal from a temp. sensor. CONSTITUTION:A control part 1 controls a printing head 3 and a printing mechanism part 4 to perform printing. If the control part 1 confirms that the temp. of the printing head 3 becomes too high on the basis of the signal from the temp. sensor 2 mounted in the printing head 3, control for reducing printing duty is performed. Contrarily, when the temp. of the printing head 3 is of a definite value or less, control is performed so as to carry out printing at a low speed even if a high speed printing mode is designated. If the temp. of the printing head reaches definite temp. or more during the printing, the high speed printing mode is enabled.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a printer, and particularly to an impact type serial printer.

[Conventional technology]

Conventionally, this Maki printer detected the temperature of the print head and controlled the printing duty when the temperature was high, but it did not have a function to control the printing duty when the temperature was low.

[Problem that the invention seeks to solve]

The conventional printer described above does not perform any control when the print head temperature is low.

Therefore, if high-speed printing mode is specified even when the print head temperature is near the lowest guaranteed operating range, there is a high possibility that mechanical malfunction of the print head will occur because printing will be performed at high speed. .

[Means for solving problems]

The impact-type serial printer of the present invention has a print head with a built-in temperature sensor and a control unit that controls the whole, and when the control unit recognizes that the temperature is below a certain level based on a signal from the temperature sensor, It has a function to control printing speed only to low speed.

〔Example〕

Next, the present invention will be explained with reference to the drawings.

FIG. 1 is a block diagram of one embodiment of the present invention.

Normally, the control section 1 controls the print head 3 and the printing mechanism section 4 to perform printing. Printing is performed based on a signal from the temperature sensor built into the print head.

If the control unit 1 recognizes that the print head temperature has become too high, control such as reducing the printing duty is performed, and conversely, if the print head temperature is below a certain value, high-speed printing mode is specified. , the printer is controlled to print at a low speed. If the temperature of the print head rises above a certain temperature during printing, high-speed printing mode becomes possible.

〔Effect of the invention〕

As explained above, the present invention can significantly improve mechanical malfunctions of the print head, especially when the controller recognizes that the print head is at a temperature below a certain level and controls the printing speed to only low-speed printing. There is an effect that can be achieved.

[Brief explanation of drawings]

FIG. 1 is a block diagram of the present invention. l...Control unit, 2...Temperature sensor, 3
...Print head, 4...Printing mechanism section.

Claims (1)

[Claims] In an impact type serial printer that has a print head with a built-in temperature sensor and a control unit that performs overall control, when the control unit recognizes that the temperature is below a certain level based on a signal from the temperature sensor, it reduces the printing speed to a low speed. An impact-type serial printer that is characterized by being controlled only by the user.