JPS6024980A - Typewriter - Google Patents

Abstract

PURPOSE:To accurately adjust a printing position in a line direction by minutely moving a carrier steplessly, by a construction wherein one of rotary bodies provided at positions proximate to both ends of a platen and guiding a wire connected to a carrier or the like can be minutely moved in the moving direction of the carrier. CONSTITUTION:When an operating lever 15 is turned toward or away from the operator, a screw rod 14 is rotated, and a tip part of a supporting plate 11 is minutely moved in the moving direction of the carrier 5 with a fulcrum 10 as a center. When the plate 11 is turned outward, the tension of the wire 12 is increased, and when the plate 11 is turned inwards, the tension is decreased, while a fixing point 13 is minutely moved rightward or leftward together with the carrier 5. Since the minute moving quantity is not larger than the minimum minute moving quantity in driving the carrier 5 by a motor 7, the printing position in the line direction can be adjusted even after resetting a paper.

Description

[Detailed description of the invention] Technical field of invention The present invention relates to a typewriter.

Technical Background of the Invention and Problems Thereto Conventionally, in typewriters, the pitch per character in the line direction was determined to be 1/10 inch in the case of Piryoku and 1/12 inch in the case of Elite, and therefore In the case of printing, the minimum fine movement amount of the expansion carrier is set to i/'60 inch or 1/1 z 0 inch to ensure compatibility with the pie force and Elite.

There is no problem with normal printing, but if you want to set the paper that has been removed from the platen again and continue printing, or if you want to erase the printed characters with correction tape, it is not necessary to set the paper in its original position. Can not.

Therefore, although the carrier is moved and aligned, the minimum fine movement of the carrier due to motor drive is 1/6o or 1/6o.
Since it is 120 inches, it is not possible to move the carrier at minute pitches, and when erasing characters with a correction tape, there will be unerased marks, and when continuing to print, the previous printing position and the restarted printing position will be removed. There is a problem that the line and the line are shifted in the lie/direction.

Purpose of the Invention The present invention was made in view of the above points, and an object of the present invention is to provide a typewriter that can accurately align the printing position in the line direction when resetting paper that has been removed from the platen. It is something.

SUMMARY OF THE INVENTION This invention connects a wire or belt driven by a motor to a carrier while bending its path by a plurality of rotating bodies arranged near both ends of a platen. After 5K of backward movement, one rotating body is slightly moved in the direction of movement of the carrier, and the tension of the wire or belt is changed to deflect the connecting part between the wire or belt and the carrier, or alternatively, the rotating bodies on both sides are moved slightly. While slightly moving the carrier in the direction of rotation, it is also deflected in the same direction along the moving direction of the carrier, and while the tension of the wire and belt is kept constant, the connecting part between the wire or belt and the middle wheel is deflected,
Therefore, when the paper t removed from the platen is set again, the carrier is finely moved in a stepless manner to accurately align the printing position in the line direction.

Embodiment of the Invention A first embodiment of the invention will be described with reference to FIGS. 1 and 2. (1) is a frame, and guide shafts (3H4) are installed on both side plates (2) of this frame (1), and carriers (5) are held by these guide shafts 7) (3) and (4). has been done. Although not shown, this carrier (5) holds the print head and moves along the nine platens. In addition, a motor (7) to which a drive pulley (6) is directly connected is attached to the frame (1), and pulleys (8) and (9) which are rotating bodies are mounted on the right and left sides.
is located. The right pulley (8) is attached to the frame (1
), but the left pulley (9) is supported directly on the fulcrum Q.
It is supported by a support plate aυ which is rotatably held by the frame (1). The wire a wire wound around the drive pulley (6) is pulled out to both sides, and the wire a is wound around the drive pulley (8) (9
) and is fixed to the carrier (5) with the fastening point (llt), and the left side plate (2) has a screw rod Q.
4 is prevented from moving in the axial direction, but is held so as to be swingable and rotatable. In addition, a control lever 4, which is a control part, is held movably in the left IE (2), and a forward fan-shaped gear 4 is formed in this control v (-μ). A gear wheel meshing with gear 4 is fixed at one end and the other end is screwed into the support plate (11).

In such a configuration, by rotating the motor (7) in either forward or reverse direction, the q-year (5) moves to the left or right to perform printing. When setting the paper that you removed from the platen on the platen again, you cannot set it in the same position at the same time, so turn the control lever in the front/back direction. As a result, the screw rod I rotates and the tip of the support plate I moves slightly in the direction of movement of the ring carrier (5) around the fulcrum (IItt).When the support plate Qυ is turned outward, the tension of the wire 1 increases. When the support plate unt is turned inward, the tension on the wire holder is small, so that the anchoring point α3t can be moved slightly to the left or to the right together with the carrier (5).

This amount of fine movement is less than the minimum amount of fine movement when driving the middle wheel rear (5) by the motor (7). Therefore, even after resetting the paper, the printing positions in the line direction can be aligned.

Next, a second embodiment of the present invention will be explained based on the third @. Since the same parts as those in the previous embodiment are internally coded, the explanation will also be omitted. A horizontally long support body is provided. Projections (7) are formed at both ends of this support portion to be slidably inserted into square holes 4 formed in the side plate (2). 1+, a pulley (8) is rotatably supported on the right side of support 4,
A pulley (9) is rotatably connected to the left end of the support body (1), and the support body (2) is also connected thereto. This support μυ has a fulcrum (1G makes the frame (
1), and is connected to the operating lever a1 via the screw rod Q4), but in this embodiment, the horizontally elongated support a8t is simply used as a connecting member connected to the operating lever (to). It is something that fulfills the functions of therefore,
It is also possible to provide a portion on the support body in which the screw rod A4 driven by the operation lever A is screwed, and omit the support body UNT.

In such a configuration, when the operating lever is turned 47 times, the support body I moves slightly, so the support body also moves slightly together with the goo IJ (8) and (9), and at this time, the tension of the wire A causes the pulley (83 (9) Since it also moves in the rotational direction, the attachment point (13) of the wire a to the carrier (5) also moves slightly together with the middle wheel (5) without changing the tension of the wire a.

Effects of the Invention Since the present invention is configured as described above, it is possible to completely deflect one rotating body and deflect the gear rear by changing the tension of the wire or belt. The middle roller can be deflected without changing the tension of the wire or belt, and when the paper that has been removed from the platen is set again, the paper can be shifted with a value t that is less than the minimum amount of fine movement caused by the motor. This has the effect of allowing the printing position t in the line direction to match extremely accurately by slightly moving the middle roller.

[Brief explanation of drawings]

Fig. 1 is a plan view showing the first embodiment of the invention, Fig. 2 is a perspective view thereof, and Fig. 3 is a perspective view showing the second embodiment of the invention. 5...Carrier, footer, 7-tater, 8.9...pulley (rotating body), 11...support body, 12...wire,
15...Operation lever (operation part), 18...Support leave application person Tokyo Electric Co., Ltd.

Claims (1)

[Claims] 1. A wire or belt is provided that is driven by a motor to pull the carrier along the platen, and is positioned near both ends of the platen to wind the wire or belt so that the wire or A typewriter characterized in that at least one of a plurality of rotating bodies for determining the path of the belt is connected to an operating section so as to be movable slightly and fixed at any position along the moving direction of the carrier. i. Providing a wire or belt driven by a motor to pull the Φ gear along a platen, and multiple turns located near each end of said platen to wind said wire or said belt and define the path of these wires or belts. A supporting body for rotatably holding one of these rotary bodies is connected to an operating part so that it can be moved slightly and fixed at any position along the moving direction of the Φ gear. typewriter. 3. A wire or belt is provided that is driven by a motor to pull the intermediate roller along the platen, and a plurality of wires or belts are provided near both ends of the platen and are wound around the wire or belt to define the path of the wire or belt. A rotating body is provided, and a horizontally elongated support body that rotatably holds the plurality of rotating bodies is connected to an operating section so that the carrier can be moved slightly and fixed at any position along the moving direction of the carrier. typewriter.