JPS59115877A - Printing apparatus - Google Patents

Abstract

PURPOSE:To provide the titled apparatus for discriminating the connection and kind of an attachment apparatus without using electrical connection, constituted so as to discriminating the kind of the attachment apparatus by operating the switch provided to the main body side of a printer by the switch operating member of the attachment apparatus when the attachment aparatus is loaded. CONSTITUTION:A plurality of microswitches 11 are attached to the main body side of a printer so as to be arranged in the vertical direction of a paper surface and metal fittings 12 for operating the microswitches 11 are attached to the side of an attachment apparatus such as a continuous paper feed apparatus. The metal fittings 12 are attached at positions differet at every attachment apparatus and the microswitches 11 are engaged with the metal fittings 12 when the attachment apparatus is loaded on the predetermined position of the printer main body while the projection 11a of each microswitch 11 is pressed by each metal fittings to operate said microswitch 11 and the connected state of the attachment apparatus and the kind thereof are discriminated by the main body of the printing apparatus.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a printer device, and particularly to the addition of an optional mechanism.

[Technical background of the invention]

Various additional devices are often attached to printer devices in order to expand their functions and improve operability during use. This additional device includes a continuous paper feed mechanism for continuous paper, a friction feed mechanism for cut paper, a front inserter mechanism, an automatic paper feed mechanism, etc.

Although these may originally be attached to the printer device as a basic component, they are usually added as optional features.

When these additional devices are attached, the functions of the printer device change, and some kind of control is often required from the printer device side. Therefore, it is necessary to input data regarding the type of the added additional device to the printer side and have it recognize it. Although this input can be made by the operator, it is often done by electrical connection between the printer main body and the additional device using an i°' cable or the like.

[Problems with background technology]

However, since it is usually not possible to determine the type of attached additional device on the printer side alone, it is possible that the operator may make a mistake in the input, or the electrical connection may not be made.
If there is no light, the printer device will operate as if it had multiple or different additional devices, which would lead to various problems.

[Purpose of the invention]

Therefore, the present invention provides a printer device that includes a detection device that allows the main body of the printer to recognize the connection of an additional device and the type of the additional device without electrical connection or the like!
The two purposes are to provide moths.

[Summary of the Invention] In order to achieve the above object, in the present invention, a detection switch is provided on the printer main body side, and the switch is operated by a switch actuating member that is provided on the additional device and engages with the switch when the additional device is installed. Moreover, the type of the additional device can be determined by the combination of activated switches, and the presence and type of the additional device can be reliably determined with an inexpensive configuration.

[Embodiments of the invention]

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

FIG. 1 is a partial plan view showing a state 2 in which a continuous paper feed device is attached to the printer main body, and a gear 2 installed coaxially with the platen 1 of the printer main body is installed coaxially with a ball shaft 3 of the continuous paper feed device. It is meshing with gear 4. A tractor frocket 5 for paper feeding is mounted on the ball shaft 3 of the continuous paper feeding device, and the tractor frocket 5 is mounted on the ball shaft 3 of the continuous paper feeding device.
One is installed. The tractor sprocket 5 engages with the feed hole of the continuous paper 6, as shown in the AA arrow view of FIG. 2, and feeds the continuous paper 6 in synchronization with the platen l.

FIG. 3 is a partial elevational view showing the details of the structure of the detecting section which is the central feature of the present invention, and shows the state viewed from arrow BB in FIG. 1.

According to this, there is a micro switch 1 on the printer body side.
1 is attached, and a metal fitting 12 for operating this microswitch is attached to the continuous paper feeder side.These microswitches 11 and metal fittings 12 are not engaged when the continuous paper feeder is mounted in a predetermined position on the printer body. The metal fitting 12 is adapted to push the protrusion 11a of the microswitch 11 to operate it. Further, a plurality of microswitches 11 are arranged in a direction perpendicular to the plane of the paper, and each additional device is operated by a metal fitting attached to a different position.

FIG. 4 is a block diagram illustrating the operation of the printer device according to the present invention, in which the control circuit section 2 which controls the entire printer device controls the drive circuit section 22 according to commands from an external device such as the central processing bag #. Control.

Further, the drive circuit section n controls the mechanism section B and the print head section 24. An additional device detection section 5 is connected to the control circuit section 2. In this embodiment, the additional device detection section 5 consists of two microswitches S1 and S2, each of which switches between +5V and the ground wire.

Projection member 1 attached to the additional device shown in FIG.
2 is installed only in the position corresponding to microswitch S1 in the additional device detection part δ, and if microswitches S1 and S2 are always OFF, that is, connected to the ground side, then the additional device cannot be connected to the tower. When mounted, the only protruding member is micro switch S1? Once activated, the microswitch S1 is turned on. Therefore, 81. The combination of S2 states is ON 'l'', OF
This state can be expressed as 10'', where F is O'', and this state is input to the control circuit, so the control circuit can determine the type of additional equipment mounted on the tower and set the control circuit according to the type of additional equipment. The information can also be communicated to external devices such as the CPU instantly.

In this way, the mounted additional devices can be detected and distinguished based on the operating state of the switch, but the number of types of additional devices that can be determined is the number of switches, YN, except when all are OFF. Since there are (2N-1), for example, if three switches are provided, it is possible to distinguish between seven additional devices.

In the above embodiments, the switch is a microswitch that is activated by pushing it with a protruding member, but the present invention is not limited to this, and any switch that is activated by engagement of a switch actuating member provided on an additional device may be used. Any of these can be applied; for example, a photoelectric switch operated by blocking light such as a photointerrupter with a protruding member made of a malleable material, or a magnetic switch sensitive to magnetism can be used.

〔Effect of the invention〕

As described above, according to the printer device of the present invention, the switch operating member provided on the additional device operates a plurality of switches provided on the printer device when the additional device is installed, and the combination of activated switch positions causes Since the control device can determine the type of the additional device, the type of the additional device can be determined without any electrical connection between the printer main body and the additional device, and appropriate control can be performed according to the type. However, the additional device detection according to the present invention can be realized at a very low cost.

[Brief explanation of the drawing]

Fig. 1 is a partial plan view showing the state in which the continuous paper feeding device is attached to the main body of the printer, Fig. 2 is a view in the direction of the AA arrow, Fig. 3 is a view in the direction of the <BB arrow, and Fig. 4 is a view according to the present invention. FIG. 2 is a block diagram of a printer device. ■...Platen, 3...Continuous paper feeder main shaft, 1
DESCRIPTION OF SYMBOLS 1... Micro switch, 12... Projection member, 21
...control circuit section, 5...additional device detection section.

Claims (1)

[Claims] In a printer device that can be mounted as an additional device, a plurality of switches that engage with a switch operating member provided on the additional device when the additional device is mounted, and the position of the activated switch. A printer device comprising: a control device that discriminates the type of an additional device mounted thereon based on a combination of the above, and performs control according to the type of the additional device. 2. The printer device according to claim 1, wherein the switch is a microswitch, and the switch actuating member is a protruding member capable of pressing the microswitch. 3. The printer device according to claim 1, wherein the switch is a photoelectric switch that is activated when the original is heated, and the switch activation member is a protruding member made of a light-tracing material.