JPS62242229A - Dot impact serial printer - Google Patents

Abstract

PURPOSE:To realize two kinds of interfaces by providing an internal interface between the gasic controlling section of a printer section and a standard interface. CONSTITUTION:A printer section 1 consists of a basic controlling section 2, a standard interface 4 and an internal interface 3 for connecting the basic controlling section 2 and the standard interface or an option interface unit 5. Further, it is provided with the option interface unit 5 for realizing the standard interface 4 and a different kind of interface. Signals inputted from an interface A to the standard interface 4 are transmitted to the basic controlling section 2 through the internal interface 3. Signals inputted from an interface B to the option interface unit 5 are transmitted to the basic controlling section 2 through the internal interface 3.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a dot impact serial printer,
In particular, it relates to improvements to the printer section.

[Prior Art] Conventionally, in this type of printer, a host device and data,
In order to realize multiple types of interfaces for exchanging information, the following three methods have been used. One is a dedicated design method in which all printers are designed for each type of interface, such as the printer section 6 for interface A and the printer section 7 for interface B shown in FIG.
The second is an interface module system in which the interface part is modularized for each type of interface, such as the module 9 for interface A and the module 10 for interface B shown in Figure 3, and other parts are shared regardless of the type of interface. , and the third and final one is a multi-interface system in which multiple interfaces (interfaces A13 and B14) are attached to one printer (multi-interface printer section 11) as shown in Figure 4 [Problems to be solved] - As mentioned above. Each of the three conventional methods has the following drawbacks.

(2) In the case of a dedicated design method In this method, it is necessary to design the entire system for each required interface, so if circuits other than the interface section change, the development cost will be significant.

2. In the case of the interface module method, this method compensates for the shortcomings of the dedicated design method of l.
In order to make the device more functional, one of the interface modules is required, and even if the interface does not need to be changed, it is modularized and therefore expensive.

3. Multi-interface system In this system, if there is no need to use only one of the built-in interfaces, the price for the other interfaces will be high.

[Measures to solve the problem of reporting] The dot impact serial printer of the present invention which solves the problem of conventional reporting has an internal interface between the basic control section of the printer section and the standard interface, and this internal interface connecting the basic control unit and the standard interface,
Alternatively, the basic control section and an optional interface unit may be connected. The optional interface unit also has an internal interface for connection to the basic control section of the main body.

[Example] Next, the present invention will be described with reference to the drawings. FIG. 1 is a block diagram according to an embodiment of the present invention. The printer unit l includes a basic control unit 2, a standard interface 4, and further the basic control unit 2 and the standard interface 4 or an optional interface unit 5.
It consists of an internal interface 3 for connecting m. Furthermore, there is an optional interface unit 5 for realizing a standard interface 4 built into the printer section 1 and a different type of interface.

In such a configuration, a signal input from the interface A to the standard interface 4 is transmitted to the basic control section 2 through the internal interface 3.

Further, a signal input from the interface B to the option interface φ unit 5 is transmitted to the basic control section 2 through the internal interface 3.

[Effects of the Invention] As explained above, in the case of realizing two types of interfaces in a dot impact serial printer, the present invention sets the standard state of the printer as only one type of interface, and unitizes the remaining one type of interface. By making it an option, the main body of the device can be made smaller and cheaper, and by attaching an optional interface as necessary, two types of interfaces can be realized.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing the configuration of a printer section according to an embodiment of the present invention, and FIGS. 2 to 4 are block diagrams showing conventional interface systems, respectively. l: Printer section 2:, lli Main control section 3: Internal interface 4: Standard interface

Claims (1)

[Claims] An internal interface is provided between the basic control section and the standard interface of the printer section, and connects the basic control section and the standard interface, or connects the basic control section and the optional interface unit. A dot impact serial printer featuring