JPH035147A - Printer - Google Patents

Abstract

PURPOSE:To perform printing selectively using all the types of a type member by rotatively sliding a type body with respect to a hammer of a digit to be printed. CONSTITUTION:A detection wheel A16 fixed on a type wheel shaft 1 and a type body 3 fixed in a radial direction are rotated. With the rotation of the type body 3, the type body 3 is slid in directions of arrows A and B by a groove part 4 and a slide rotor 11. A pulse corresponding to a type 2a of a type member 2 is detected by the detection wheel A16, a detection wheel 17, and a detection brush 21, whereby the required type 2a is selected. The ink transferred from an ink roll 14 to the type 2a is transferred to printing paper 22. After the completion of a printing process, a carriage 12 is carried by a carry cam part 9b of a printing carry cam 9 and a positioning board 15. After the completion of a carrying process, the rotation of a printing shaft 10 is stopped, and the type wheel shaft 1 starts rotating.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a printer installed in an electronic device equipped with a printing device, such as an electronic desktop calculator or a measuring machine.

[Prior Art] Conventionally, this type of technology required a shift magnet, a shift mechanism, etc., as shown in Japanese Patent Publication No. 60-104365.

[Problems to be Solved by the Invention] However, in the above-mentioned conventional technology, the mechanism is complicated, there are many parts, and the control is complicated, resulting in high printer costs and poor reliability. In addition, since it was necessary to control the selection of the type ring groups, the control software was complicated.

The present invention has been made to solve these drawbacks, and its purpose is to provide a printer with a simple mechanism, low cost, high reliability, and simple control software.

[Means for Solving the Problems] The printer of the present invention has a printing section including a type member made of an elastic material in which a large number of type characters are arranged, and a type body having a spiral groove formed by wrapping the type member around the circumference. , a type body driving means for driving and controlling the type body, a hammer for pushing out the type member onto printing paper, a hammer driving means for driving the hammer, and a slide rotor that engages with the groove portion of the type body; It is composed of a carriage on which the hammer and the slide rotor are mounted and which slides in the direction of the printing digits.

[Operation] According to the above-described configuration of the present invention, since the type body rotates and slides with respect to the hammer of the digit to be printed, it is possible to selectively print all the type characters on the type member.

[Example] Next, an example of the present invention will be described. FIG. 1 is a plan view of the printing section of the printer with the ink roll removed.

FIG. 2 is a side view illustrating the printing unit mechanism. FIG. 3 is a partial side view illustrating the relationship between the typeface, the carriage, and the slide rotor. This will be explained using FIG. 1, FIG. 2, and FIG. 3.

1 is a type wheel shaft that applies rotational force to the type 3 and can slide with the type. Reference numeral 2 denotes a type member formed of rubber or the like and holding type 2a on its surface. 4 is a spiral groove installed on the surface of the typeface 3; 6 is a hammer that pushes out the type member. 10 is a printing shaft that rotates a printing carry cam 9 mounted on a carriage 12; A slide rotor 11 engages with the groove 4 and is rotatably attached to the carriage. 13 is the frame. 14 is an ink roll. 15 is the carry cam part 9 of the print carry cam 9
A positioning plate that aligns with b. 16 is a detection mold fixed to the type wheel shaft.]7 is a detection wheel B. 18 is a transmission gear that transmits the rotation of detection wheel A to detection wheel B.

21 is a detection brush.

Next, the operation in the embodiment will be explained.

The rotation of the motor 24 rotates the type wheel set 1 via a train wheel (not shown). The detection wheel A16 fixed to the type wheel shaft 1 and the type body 3 fixed in the radial direction rotate. A gear 1.6a is provided at the center of the detection wheel A16, and rotation is transmitted to the detection wheel B17 via the transmission gear 18. When the type 3 rotates, the groove 4 and the slide rotor 11 cause the type 3 to slide in the directions of arrows A and B. The detection wheel A16, the detection wheel B17, and the detection brush 21 detect pulses corresponding to the type characters 2a of the type member 2, and select the desired type 2a. Selection mechanism (not shown).

), the type wheel shaft 1 is stopped and the printing shaft 10 is rotated.

The hammer spring 8 is activated by the printing cam portion 9a of the printing carry cam 9.
rotates in the direction of arrow C, and rotates the hammer 6 in the direction of the arrow via the transmission lever 7. The tip 6a of the hammer 6 presses the type 2a of the type member 2 against the printing paper 22. The ink from the ink roll 14 is transferred to the printed characters 2a, and the ink is transferred to the printing paper 22. When the printing process is completed, the carriage 12 is carried up by the carry cam portion 9b of the print carry cam 9 and the positioning plate 15. When the carry stroke is completed, the printing shaft 100 rotations stop and the type wheel shaft 1 starts rotating. □After printing the desired number of digits, the carriage is returned to the standby position by a release mechanism (not shown).

[Effects of the Invention] As described above, according to the present invention, it is possible to selectively print all the type characters of the type member on all digits with a simple mechanism, and the cost is low and the control is highly reliable. Software can now provide a simple printer.

[Brief explanation of the drawing]

1 to 3 show one embodiment of the present invention; FIG. 1 is a plan view of the printing section, FIG. 2 is a side view illustrating the mechanism of the printing section, and FIG. 3 is a partial side view. 1... Type wheel shaft 2... Type member 3...
Typeface 4...Groove 6...Hammer
8... Hammer spring 9... Print carry cam 1
0...Printing shaft 11...Slide rotor 12...
Carriage 13...Frame 14...Ink roll 15...Positioning plate 16...Detection wheel A17...Detection wheel B 18...Transmission gear 1
9...Detection cover 20...Brush holder is seat 21
... Brush 22 ... Print paper 23 ... Platen 24 ... Motor or more

Claims (1)

[Claims] In a printer that selectively prints a large number of type characters on the outer periphery, a type member made of an elastic material in which the type characters are arranged, a type body having a spiral groove in which the type member is wrapped around the circumference, A type body driving means for driving and controlling the type body, a hammer for pushing the type member onto printing paper, a hammer driving means for driving the hammer, a slide rotor that engages with the groove of the type body, and the hammer. and a carriage that is equipped with the slide rotor and slides in the direction of the printing digits.