JPS62111777A - Printing controller - Google Patents

Abstract

PURPOSE:To increase the printing speed at AC adaptor use time and to achieve the reduction of power consumption by decreasing the printing speed at dry cell use time, by controlling the printing speed of a printer by detecting the presence of the use of AC adaptor in the electronic apparatus utilizing the printer which operates on the AC adaptor and the dry cell. CONSTITUTION:The supply voltage supplied from an AC adaptor 1 and a dry cell 2 is inputted to a voltage detection part 5 via an input line 4. This voltage detection part 5 converts the input voltage to a data 6, sends it to a control part 7 and judges either the AC adaptor 1 is being used or the dry cell 2 is being used. Then, if the AC adaptor 1 is being used, because a printer 8 is so controlled as to print at a high speed, the performance of the printer 8 can be thoroughly utilized. Further, if the dry cell 2 is being used, by controlling the printer to print at a low speed, the power consumption is reduced, the sudden voltage drop of cell voltage is prevented and besides, the service life of the dry cell can be lengthened.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an electronic device using a printer that operates using an AC adapter and a dry cell battery.

[Summary of the Invention] The present invention provides an electronic device using a printer that operates using an AC adapter and a dry battery, by detecting whether or not the AC adapter is being used and controlling the printing speed of the printer. The printing speed is increased when the AC adapter is used, and the printing speed is lowered when the dry battery is used to reduce power consumption.

[Prior Art] Normally, electronic equipment that operates using an AC adapter and dry cell batteries boosts the input power supply voltage in a power supply unit 26 and supplies it in order to obtain power for driving the printer, as shown in FIG. There is. Since current consumption increases during the printing operation of the printer 25, a sudden voltage drop occurs when the dry battery 22 is used. The power consumption of the printer 25 is greatly affected by the printing speed of the printer, and when only the dry battery 22 is used,
There is a problem in that as the printing speed increases, the service life of the dry cell battery becomes shorter, and there is a limit to the setting of the printing speed. Further, 21 is an AC adapter.

[Problems and objects to be solved by the invention] However, in the above-mentioned prior art, even when stable input power is supplied using an AC adapter, the printing speed is the same as when using dry batteries. Therefore, there is a problem that the performance of the printer cannot be fully utilized.

The present invention solves these problems, and its purpose is to provide an electronic device that achieves high-speed and comfortable printing when using an AC adapter and consumes low power when using dry batteries. There is a particular thing.

[Means for Solving the Problems J] The present invention provides an electronic device that uses a printer, which is composed of at least a voltage detection section and a control section, and is powered by an AC adapter and a dry battery, based on data detected by the voltage detection section. The present invention is characterized in that the control section determines whether or not an AC adapter is being used, and controls the printing speed of the printer.

[Function] The power supply voltage input by the AC adapter and dry battery is
Detected by the voltage detection section. The detected data is taken into the control unit, which determines whether the AC adapter or dry cell battery is being used, controls the printer, and changes the printing speed.

[Example] Hereinafter, the present invention will be explained in detail according to examples.

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

In the figure, a power supply voltage supplied by an AC adapter 1 and a dry cell battery 2 is inputted to a voltage detection section 5 through an input line 4. At this time, the diode 3 prevents current from flowing from the AC adapter 1 to the dry cell battery 2. Voltage detection section 5
converts the input voltage into data 6 and passes it to the control unit 1. In this embodiment, the range of the voltage input to the voltage detection unit 5 is as shown in FIG.
2 and a fluctuation range 31 of the AC adapter output, the voltage detection section 5 can be constructed with a simple circuit using a Zener diode 31 as shown in FIG. The control unit 7 determines whether the AC adapter 1 is in use or the dry cell battery 2 is in use based on the data 6, and if the AC adapter 1 is in use, the printer 8 operates to print at high speed. Therefore, the performance of the printer 8 can be fully utilized. In addition, by controlling the printer 8 to print at a low speed when the dry cell battery 2 is in use, it reduces power consumption, prevents a sudden voltage drop in the dry cell voltage, and extends the service life of the dry cell battery. It is something that makes you

[Effects of the Invention] As described above, according to the present invention, by detecting whether or not an AC adapter is used and changing the printing speed of the printer, it is possible to print at a high speed that fully utilizes the performance of the printer. Not only is this possible, but it also has the effect of allowing economical operation with low power consumption when using dry batteries.

[Brief explanation of drawings]

FIG. 1 is a block diagram of an embodiment of the printing control device of the present invention, and FIG. 2 is a diagram showing the fluctuation range of the output voltage of the AC adapter and dry battery. FIG. 3 is a diagram showing one example of the circuit of the voltage detection section 5. FIG. 4 is a diagram showing the configuration of a conventional printing control device. 5... Voltage detection section 7... Control section or higher

Claims (1)

[Claims] An electronic device that uses a printer that is configured of at least a voltage detection section and a control section and that operates using an AC adapter and a dry cell battery, has means for detecting whether or not the AC adapter is being used, and has means for detecting whether or not the AC adapter is being used. A printing control device characterized by controlling the speed of the printer.