JPS58145475A - Electronic apparatus with printer - Google Patents

Abstract

PURPOSE:To provide a printer having such a construction as not to require any detecting means for a printing position or any selecting and controlling means for a preset value, by connecting a home position signal forming means to an operating lever for changing over between printing on a rolled paper and that on a sheet form paper. CONSTITUTION:In the printer 1 capable of selectively printing on the rolled paper 7 fitted in the printer or on the sheet form paper 8 placed on a table by changing over the operating lever 9, a home position detecting plate 20 is connected to a shaft 19 for the lever 9. The detecting plate 20 is placed coaxially with a hammer 13 at a position between a gear 18b and an outside surface of a type drum 10. On the top face of the detecting plate 20, a switching element 21 consisting of a ferromagnetic material is provided at a position substantially faced to the circumference of the type drum 10. When the drum 10 is rotated and a magnetic body 22 approaches the switching element 21 provided on the detecting plate 20, the element 21 constitutes a relay circuit, and generates a home position signal indicating a specified position of a plurality of types provided on the drum 10. The signal is used for controlling an electric current passed through each solenoid.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an electronic device with a printing device, and more specifically, the present invention relates to an electronic device with a printing device, and more specifically, a roll of printing paper and a sheet of printing paper placed on a desk are switched by operating a lever or the like C2. The present invention relates to an electronic device equipped with a printing device configured to print.

Conventionally, electronic equipment with a printing device that prints by hitting a type drum rotated at a constant speed by a pulse motor or the like with a hammer and pressing the type onto the printing paper has traditionally used a roll of printing paper and a desktop C device. When selecting and printing on a sheet of printing paper, it is generally known that printing is performed by switching between two printing positions (by operating a lever, etc.).

That is, FIGS. 1 to 4 show a conventional electronic device with a printing device. In the figure, the reference numeral 1 indicates the main body of the device, and the top surface of the right half of the main body 1 contains various types of information. A keyboard section 2 for inputting keys is provided. A CPU (central processing unit) for processing data input from the keyboard section 2, a power supply device, and the like are housed within the main body 1 of the keyboard section 2.

Further, on the upper surface of the higher left half of the device main body 1, there is provided a display 3 formed of a liquid crystal, a light emitting diode, or the like to indicate input values, calculation results, and the like. An opening 4 is formed at the rear of the top surface of the left half of the device main body 1.
A paper cutter 5 is attached to the opening 4 in an inclined state, and a paper holder 6 holding a roll paper 7 is attached to the rear end C- of the left half of the main body 1 of the device.

An operating lever 9 is provided on the side of the opening 4 to switch printing between the roll paper 7 and the sheet paper 8 placed on the desk.

In the left half of the device body 1, a printing device and others as shown in FIGS. 2 to 4 are housed. It is a type drum that rotates. type drum 1
A type band 11 made of an elastic member is removably provided around the outer surface of the 0. Further, inside the type drum 10, a plurality of solenoids 12 are provided corresponding to each type band 11, and each solenoid 12 is connected to a hammer 13, respectively.
It is equipped with

As shown in FIG. 4, each solenoid 12 is connected to the gear 1 by operating the operating lever 9 via a gear 1ga that rotates when the operating lever 9 is operated and a gear I1gb1 provided on the rotating shaft 19 of the solenoid 12.
8a and b rotate to switch the orientation of the hammer 13 between the horizontal state shown in FIG. 2 and the vertical state shown in FIG.

The reference numeral 14 is an ink roller that presses against the type strip 11 to supply ink, and the reference numeral 15 is a platen.

Further, reference numeral 16 indicates an insertion slot for the roll paper 7, inside which a paper feed roller 17a and a pinch roller 17b for supplying the roll paper are provided, and the tip of the roll paper 7 is inserted into the insertion slot 16. From there, it passes between the paper feed roller 17a and the pinch roller 17b, and the platen 15 and the type drum 1.
o and is sent out of the device main body 1 through the opening 4.

Based on the above structure, when printing is performed by switching between roll paper 7 and sheet paper 8 by operating the operating lever 9, the printing position on the roll paper side or the sheet paper side is detected in response to the operation of the operating lever 9. For example, a print position detection means (not shown) such as a sensor switch is required to generate a signal (hereinafter referred to as a home position signal) for detecting a print reference position corresponding to each print position, and to detect each home position. The signal is sent to a control means (not shown) that performs necessary controls such as resetting a character counter, and when a lever or the like is switched to a different position, the printing position of a hammer or the like is switched and moved. Control was performed to change the preset value of the character counter only to the value corresponding to the number of characters required for printing, and the desired characters were printed.

However, in the conventional structure (:), it is necessary to operate at least a lever, etc. (two pairs of printing position detection means and two home position signal generation means), and
This method has the drawback of requiring a complicated configuration, such as requiring a control means for selecting a preset value corresponding to each printing position.

An object of the present invention is to solve the conventional complicated configuration and to provide an electronic printing device with an extremely simple configuration that does not require a printing position detection means or a control means for selecting a preset value. It is important to provide equipment.

In order to achieve this objective, the present invention automatically moves the mechanism itself of the home position signal forming means by operating the operating lever, so that the home position signal is transmitted at a relative position corresponding to the printing position. I made it so that it would be done.

Hereinafter, one embodiment of the present invention will be described based on the drawings. An embodiment of the present invention is illustrated in FIGS. 5 to 7, in which the same or similar parts to those shown in FIGS. 1 to 4 are denoted by the same reference numerals. The explanation will be omitted.

In FIGS. 6 and 7, the reference numeral 20 indicates a home position detection plate, and the home position detection plate 20
is arranged coaxially with the hammer 13 at a position between the gear 18b and the outside of the type drum 10, and its longitudinal end is attached to the rotating shaft 19. On the upper surface of the home position detection plate 20, a switching element 21 made of a ferromagnetic material, such as a micro reed switch, is provided at a position facing the circumference of the type drum 10. or,
The home position detection plate 20 changes its direction to the sixth position similarly to the direction of the hammer 13 by operating the operating lever 9.
The vertical state shown in Figures (a) and (b) and the vertical state shown in Figure 7 (a)
It can be moved to the horizontal state shown in b).

The magnetic body 22 indicated by the reference numeral 22 is attached to one point on the circumference of the type drum 10 on the side facing the home position detection plate 20.

In one embodiment of the present invention based on the above structure, when the type drum 10 rotates, the magnetic body 22 passes close to the switching element 21 on the home position detection plate 20. At that time, the switching element 21 constitutes a relay circuit and generates a home position signal indicating the specific position of the plurality of printed characters on the type drum 10. The home position signal is then sent to control means (not shown) that controls energization of each solenoid 12.

For example, the type of type on the entire circumference of the type drum 10 is 0 to 9.
In the case of the number ``, place the magnetic body 22 at the 0'' position,
If the switching element 21 is directed toward the lowest point in the same direction as the hammer 13 as shown in FIG. 5, when the magnetic body 22 passes through the switching element 21 and an ON signal is sent, each solenoid 12 is energized. If the control is performed so that the number "O" is selected as the character on the character drum 10, printing is performed on the sheet paper 8. In FIG. 6, the home position detection plate 20 solenoid 12 is activated by operating the operating lever 9.
and hammer 13 are integrally rotated about 90 degrees counterclockwise from FIG. 5 via gears 18a and 18b. Then, as shown in FIG. 5, each solenoid is energized and the roll paper 7 is controlled.
The character "0" is printed on.

In addition, when printing characters other than the character "0", generally known control is performed, such as counting character positions as the type drum rotates and sequentially selecting them. Type is printed.

In this case, the counter is initialized by resetting the counter based on the signal from the read switch Y-21.

As is clear from the above explanation, according to the present invention, not only the direction of the hammer but also the detection position of the home position detector automatically moves as the lever or the like is operated.
There is no need to distinguish between the roll paper side and the sheet paper side in terms of control, and there is no need for a print position detection means corresponding to the operation of a lever, etc., and type selection is controlled based on the output signal of the home position detector. , the desired type is printed by automatically switching between roll paper and sheet paper.

Therefore, in the present invention, there is no need for a print position detection means corresponding to the operation of a lever or the like and a control means for selecting a preset value, and an electronic device having an extremely simple configuration can be obtained.

[Brief explanation of the drawing]

Figures 1 to 4 explain the structure of a conventional electronic device equipped with a printing device, with Figure 1 being an overall perspective view, and Figures 2 to 3 showing the printing state on roll paper and the printing state on sheet paper. FIG. 4 is an explanatory diagram showing the relationship between the operating lever and the printing hammer. FIGS. 5 to 7 show an embodiment of the present invention. FIG. Figure a) is an explanatory diagram showing the position of the home position detector in the printing state on roll paper, Figure 6(b) is a sectional view taken along the line A-A in Figure 6(a), and Figure 7(a). 7 is an explanatory diagram showing the position of the home position detector in a printing state on a sheet of paper, and FIG. 7(a) is a sectional view taken along the line A'-A' in FIG. 1... Electronic equipment body 7... Roll paper 8...
Sheet paper 9... Operating lever 12... Solenoid 13... Hammer 18a, b... Gear 19... Rotating shaft 20... Home position detection plate

Claims (1)

[Claims] An electronic device equipped with a printing device capable of printing by switching between a printing state on roll paper and a printing state on sheet paper, comprising a detection means for detecting a character reference position that moves in response to a switching operation, the detection means An electronic device equipped with a printing device, characterized in that type selection is controlled by an output signal from the printer.