JPS5898269A - Electronic apparatus with printer - Google Patents

Abstract

PURPOSE:To accurately effect the printing position alignment in printing on a sheet, by providing on the reverse side of an electronic apparatus body a roller adapted to rotate by a given amount through the operation from the outside. CONSTITUTION:In printing on a sheet 8, first, the lateral position is aligned by means of marks 11a, and the upper end edge of a line 8b to be printed is aligned with the front end edge of the body of a desk electronic calculator 1. Next, with a positioning button 24 depressed, the calculator 1 is slightly moved in the direction of an arrow C. Consequently, a shaft 24a of the button 24 causes an engaging member 31 to pivot, so that an engaging part 31a and a notched part 29a of a cam plate 29 are disengaged from each other. Under this state, the depression the button 24 is removed, and the calculator 1 is further moved in the direction of the arrow C. In consequence, a positioning roller 27 is rotated, and the movement is stopped at the position where the engaging part 31a engages with another notched part 29a, i.e., the position where the line 8b corresponds to the printing position.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an electronic device equipped with a printing device, and more specifically to a printing device configured to be able to print on roll-shaped printing paper and sheet-shaped printing paper placed on a desk. This relates to electronic equipment.

It is now possible to print on both roll-shaped printing paper and sheet-shaped printing paper that can be placed on a desk (
-Electronic devices with printing devices, such as electronic desktop calculators (hereinafter referred to as calculators), are known. Conventional electronic equipment having such a structure is shown in FIGS. 1 to 4.

That is, FIG. 1 explains the overall structure of a calculator with a printing device.The calculator designated by the reference numeral 1 in the figure is provided with a keyboard portion 2 on the upper surface of its right hand portion for manually operating various keys. Inside the unit 2, an arithmetic circuit, a power supply device, and other components are housed. A display 3 is provided on the upper surface of the keyboard section 2 and the left half of the calculator 1, which is one level higher than the other, to show input values, calculation results, and the like.

Further, an opening 4 is formed at the rear of the left half of the calculator 1, and a paper cutter 5 is installed in this opening 4 in an inclined manner. A roll paper 7 is provided in the roll paper holder 6. The leading end of the roll paper 7 is drawn into the main body of the calculator 1 from the rear end thereof, passes between the opening 4 and the blade 5a of the paper cutter 5, and is guided to the outside.

A switching lever 9 is provided on the side of the opening 4 to switch printing between roll paper 7 and sheet paper 8.

The reference numeral 10 is a power switch, and the reference numeral 11a is a power switch.
Reference numeral 11b indicates a mark for confirming the digit spacing and line position when printing on the sheet paper 8. Reference numeral 8a indicates the characters printed on the sheet paper 8, and 8b indicates the print line.

A printing device as shown in FIGS. 2 to 4 is accommodated within the calculator 1.

That is, the printing device 12 has a hollow type ring 13, and a type belt 14 made of an elastic member is attached to the outside of the type ring 13, and each type belt 14 has type characters 14a arranged at predetermined positions in the circumferential direction. It is set on a pitch. This type wheel 13
There is a solenoid 15 inside corresponding to each type belt 14.
A plurality of solenoids 15 are provided, and each solenoid 15 is provided with a knob 16.

As shown in FIG. 4, by operating the switching lever 9, each solenoid 15 engages a gear 19 integrated therewith with a gear 18 provided on the rotating shaft 17 of the solenoid 15, thereby changing the direction of the nozzle 16. The horizontal state shown in Figure 2 and the third
It can be switched to the vertical state shown in the figure.

The reference numeral 20 indicates a platen, and the reference numeral 21 indicates an ink roller.

Reference numeral 22 indicates an insertion opening for the roll paper 7, and rollers 23, 23 for supplying the roll paper are provided inside the slot.

The type wheel 13 is rotated by a pulse motor (not shown), and this pulse motor is controlled by a control circuit housed in the calculator 1 to position the desired type at a printing position.

By operating the switching lever 9 based on the above structure, the hammer 16 is switched between a horizontal state and a vertical state,
Printing is performed on roll paper 7 and sheet paper 8, but
Adopting such a structure has the following disadvantages.

That is, when the hammer 16 is rotated vertically downward by operating the switching lever 9 to print on the sheet paper 8, the type ring 13 that performs printing is so arranged that it slightly protrudes from the opening provided on the back side of the main body. sheet paper 8.
When printing on a sheet of paper 8, if the calculator 1 is placed on the sheet paper 8, the printing position will become unclear in appearance, making it difficult to print at a predetermined printing position.

Therefore, as shown in FIG. 1, marks 11a and llb corresponding to the printing positions are provided on the side surface of the calculator 1, and the printing position on the sheet paper 8 is determined by these marks.

However, if there is a mark such as a ruled line indicating the print line on the sheet paper 8 as shown by reference numeral 8b in FIG. If the calculator 8 is smaller than the calculator 1 and requires accurate positioning, it has the disadvantage that, for example, it is difficult to accurately print on a slip or the like.

In order to achieve the above object, the present invention provides a plurality of rollers that can rotate only in one direction, front, back, left, and right on the back surface of the main body of an electronic device, with the rollers projecting slightly downward. We adopted a structure that allows at least one internal roller to rotate by a certain amount.

Hereinafter, the present invention will be described in detail based on embodiments shown in the drawings.

FIG. 5 and subsequent figures illustrate one embodiment of the present invention, and in each figure, the same or corresponding parts as in FIGS. 1 to 4 are denoted by the same reference numerals, and the explanation thereof will be omitted.

In this embodiment, the main body 1 can be set at a predetermined printing position by simply aligning the marks lla and llb provided on the side surface of the main body 1 in the left-right direction.

That is, a positioning button 24 is provided in line with the switching lever 9 provided on the upper surface of the left half of the main body of the electronic device.

Further, on the back side of the calculator 1, rollers 25 are provided at each of its four corners (the two main bodies can move in the front and rear directions).

A positioning roller 27 is provided in the vicinity of the opening 1a through which the type wheel 13 faces downward in order to print on the sheet paper 8, and is controlled by the positioning button 24 and capable of moving the calculator 1 forward by a certain amount. .

The specific structure of the positioning button 24 and the positioning roller 27 is shown in FIG.

That is, a positioning roller 27 is rotatably attached to the rotating shaft 28 of the printing device 12, and the positioning roller 27 is attached so as to protrude from the back surface of the calculator 1 by a predetermined amount. A cam plate 29 is integrally provided on the outer surface of the positioning roller 27. The cam plate 29 has notches at opposing positions on its circumference in order to rotate the positioning roller 27 by a certain amount. 9a is formed. Also, positioning roller 27. (2 is the positioning roller 2)
A reverse rotation prevention wheel 30 is provided to prevent reverse rotation 7, and rotates together with the positioning roller 27.

Reference numeral 31 indicates a locking piece, the lower end of which is rotatable around a shaft 32 provided at the lower end of the calculator 1, and a locking portion 31a formed at the upper end of the locking piece 31a is connected to the cam. It is configured to engage with a notch 29a of the plate 29 and prevent the positioning roller 27 from rotating counterclockwise in the figure. This locking piece 31 is given a force by a torsion coil spring 34 attached to the shaft 32 in a direction such that its locking portion 31a is constantly engaged with the cam plate 29.

Further, since the anti-reverse ring 30 restricts the stopper 33 (second ratchet) 30a made of an elastic member whose lower end is fixed to the lower surface of the calculator 1, the rotation in the clockwise direction in FIG. is always prevented.

On the other hand, the support shaft 24a of the positioning button 24 is fitted into the calculator 1 so as to be movable up and down, and its lowermost end is in a position where it can come into contact with the slope of the locking portion 31a of the locking piece 31.

This positioning button 24 is given the habit of always moving upward by a spring 35.

Next, the operation of this embodiment configured as described above will be explained.

First, when printing on a specific line 8b on the sheet paper 8, the upper edge of the printed line 8b is aligned with the front edge of the main body of the calculator 1 while adjusting the position in the horizontal direction using the mark 11a.

Next, the positioning button 24 is pressed down, and the lower end of the support shaft 24a is used to rotate the locking piece 31 in the direction of the arrow as shown by the chain line in FIG. 29a. Then, move the main body slightly in the direction shown by the double arrow C in FIG.
The locking portion 31a is removed from the cutout portion 29a and comes into contact with the arcuate surface of the cam plate 29. When the calculator 1 is further moved in the direction of arrow C in this state, the positioning roller 27 rotates, and the movement stops at the position where the next notch 29a and the locking part 31a engage. At this time, the diameter of the positioning roller 27 and the position of the notch 29a of the cam plate 29 are set so that the print line 8b can accurately face the print position.

In this way, the horizontal position is determined using the marks, and then the calculator 1 can be moved toward the front (two positions), making it possible to print accurately.

In the above embodiment, a structure was adopted in which a roller that rotates in the front-rear direction was used for positioning, but a positioning roller that rotates in the left-right direction is provided and the vertical position of the sheet paper 8 is determined by the mark 11b. After this, a structure may be adopted in which the printing position is determined by moving the calculator 1 in the left-right direction, and which structure is adopted can be freely set according to the desired printing form.

As is clear from the above description, according to the present invention, a plurality of rollers that can rotate only in one direction, either the front-rear direction or the left-right direction, are provided on the back surface of the electronic device main body, and at least one roller is provided inside these rollers. By configuring the unit so that it can only be rotated by a certain amount by external operation, positioning can be performed only in one direction (vertically or horizontally) of the printing position on the sheet paper using the mark that indicates the printing position on the side line of the device, and the electronic The printing position can be determined accurately by simply moving the main body of the device, making it extremely easy to mark marks such as ruled lines on sheet paper (
= Printing position can be determined.

[Brief explanation of drawings]

Figures 1 to 4 explain the conventional structure, with Figure 1 being an overall perspective view, Figures 2 and 3 being explanatory diagrams showing the printing state on roll paper and the printing state on sheet paper, and Figure 4.
The figure is an explanatory diagram showing the relationship between the operating lever and the printing hammer, Figures 5 and 6 are perspective views from above and below explaining an embodiment of the present invention, and Figure 7 is a longitudinal side view. be.

Claims (1)

[Claims] In an electronic device equipped with a printing device that can selectively print on roll paper and sheet paper, a plurality of rollers that can rotate only in one direction, front and back or left and right are installed on the back side of the electronic device body in a predetermined manner from the back side. 1. An electronic device with a printing device, characterized in that the electronic device is provided in a protruding state and configured such that at least one roller inside the plurality of rollers can be rotated at a constant rate by external operation.