JPS6253354B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a serial printer that facilitates tab position setting.

In conventional serial printers, when setting the tab position, if the carrier is near the tab, the tab cannot be moved further in the carrier direction, so first move the carrier in the opposite direction. , the tab is then released from the locked state and the tab is set at the desired position, so there are at least two independent operations: one to move the carrier in the opposite direction to the tab, and the other to move the tab. Two operations were required. Therefore, the tab position setting operation has become troublesome.

The present invention was made based on the above-mentioned circumstances, and its purpose is to provide a serial printer in which the position of a tab can be set with one simple operation.

An embodiment of the present invention will be described below with reference to FIGS. 1 to 4. FIG. 1 shows a schematic configuration of a serial printer. A platen 3 and guide shafts 4, 5 are arranged parallel to each other between the left and right pair of side plates 1, 2. A carrier 6 is attached to these guide shafts 4 and 5 so as to be movable in parallel to the platen 3. A printing head 7 is attached to the carrier 6, and when printing, the carrier 6 is driven to feed the printing paper inserted between the printing head 7 and the platen 3 from right to left in FIG. Printing is performed in accordance with the operations performed. Moreover, the guide shaft 5
A locking member 8 is provided above the platen 3 in parallel to the platen 3.
is installed. The locking member 8 is formed by forming continuous locking teeth on one side of a square bar.

A tab 9 is provided on the return direction side of the carrier 6 so as to be movable in parallel with the platen 3 while being guided by the guide shaft 5 and the locking member 8. An operating member 10 is attached to the tab 9 so as to be movable in the vertical direction in FIG. This operating member 10 has a locking piece 11 in part, and is normally urged upward in FIG. 1 by a spring 12.
The locking piece 11 is engaged with the locking member 8 to lock the tab 9 at a certain position, so that the stop position when the carrier 6 moves in the return direction can be set as appropriate. An extending portion 9a extending in the direction opposite to the platen is provided at the lower end of the tab 9, and an interlocking switch 13 is provided on the upper surface of this extending portion.
is installed. This interlocking switch 13 is inserted into the drive circuit 17 of the carrier 6, and when the operating member 10 performs a downward movement that enables the tab 9 to move, the operating member 13
0, the carrier 6 is moved in the opposite direction, and the operating member 10 is pressed by the spring 12.
When returning upward, the carrier 6 is moved in the direction of the tab. As shown in FIG. 5, the drive circuit 17 includes a drive motor 18 that can rotate in forward and reverse directions.
8 drives the carrier 6. That is, when the interlocking switch 13 is switched by operating the operating member 10, the drive motor 1
8 rotates in the forward direction and drives the carrier 6 in the opposite direction. When the carrier 6 reaches the vicinity of the side plate 1, the rotation of the drive motor 18 is stopped by an arbitrary stopping means provided in the vicinity of the side plate 1. Further, when the interlocking switch 13 is released from the energization by returning to the operation of the operating member 10, the drive motor 18
rotates in the opposite direction to drive the carrier 6 toward the tab. When the carrier 6 reaches the vicinity of the tab, the light plate 14 fixed to the carrier 6 moves to the tab 9.
The position of the carrier 6 is detected by cutting off the optical signal of the photodetecting element 15 attached to the drive circuit 17, and this detection signal causes the drive circuit 17 to stop the operation of the drive motor 18 to stop the carrier 6. . Note that 16 in the figure is an operation button attached to the upper end of the operation member 10.

Therefore, in the serial printer configured as described above, when the printing start position is set, when the operation button 16 is pressed, the locking piece 11 is released from the locking member 8, and the carrier 6 is driven to be sent in the opposite direction to the tab. Therefore, while the operating member 10 is held in the pushed-in position, the tab 9 can be freely moved not only to the right but also to the left, and a desired position can be set. Then, when the operation button 16 is released, the locking piece 11 is returned by the spring 12 and the locking member 8 is returned to its original position.
The carrier 6 moves in the direction of the tab and stops at the desired position set by the tab 9. In this state, a predetermined printing operation can be performed while moving the carrier 6 to the left by pressing a function key or the like on the printer main body.

Thus, in the serial printer configured as described above, the carrier 6 can be moved and the tab 9 can be unlocked with a single operation of pressing the operation button 16, thereby significantly improving the operability. Can be done.

Next, another embodiment shown in FIGS. 6 to 8 will be described. This connects the locking member to the screw shaft 2.
1, one end of the screw shaft 21 is screwed onto the screw shaft 21, and a disk-shaped operating member 23 is attached to the side plate 2 so as to be freely retractable and rotatable, and the member 23 can be moved forward and backward. An interlocking switch 24 is also attached to the outer surface of the side plate 2, and the operating member 23 is connected to the screw shaft 21.
By moving the operating member 23 in the direction in which it engages, the switch 24 is biased by the operating member 23. Note that the operating member 23 is always held in the position shown in FIG. 8, where it is detached from the screw shaft 21, by a spring 25. Further, an operating handle 26 for rotational operation is attached to the outer peripheral edge of the operating member 23.

When setting the position of the tab in such a configuration, grasp the operating handle 26 and push the operating member 23 to the left in FIG.
4, fit the prismatic protrusion 23a formed at the tip of the operating member 23 into the recess 21a provided on the end surface of the screw shaft 21, and then rotate the operating member 23 in a certain direction. The screw shaft 21 may be rotated in the same direction. At this time, the carrier 6 is driven in the opposite direction by switching the switch 24, and then by rotating the screw shaft 21,
The tab 22 screwed into this can be moved to any position. Therefore, the position of the tab can be set with one simple operation of pushing and turning the operating member 23, and there is no need to manually slide the tab as in the previous embodiment. Since the tab 22 is directly screwed onto the screw shaft 21 as a locking member, there is no need to provide special members such as the locking piece 11 and spring 12 in the above embodiment, and the structure can be further simplified. can do.

As explained above based on each example,
In the serial printer of the present invention, the carrier can be moved and the tab can be unlocked by simply operating a single operating member, so the position of the tab can be easily set.

[Brief explanation of the drawing]

1 to 5 show one embodiment of the present invention, in which FIG. 1 is an overall perspective view showing a schematic configuration, FIG. 2 is a front view of the main part, FIG. 3 is a plan view of the main part, and FIG. Figure 4 is a side sectional view of the main part, Figure 5 is a circuit block diagram of the main part, Figures 6 to 8 show other embodiments of the invention, and Figure 6 is an overall perspective view showing the schematic configuration. FIG. 7 is a front view of the main part, and FIG. 8 is a sectional view of the main part. 3...Platen, 4, 5...Guide shaft, 6...Carrier, 8...Locking member, 9, 22...Tab, 10, 23
...Operating member, 13, 24...Interlocking switch, 21...
Screw shaft (locking member).

Claims (1)

[Scope of Claims] 1. A guide shaft and a locking member arranged parallel to the platen, a carrier that is guided by the guide shaft and movable parallel to the platen, and a guide shaft and the locking member arranged parallel to the platen. a tab that is guided and movable parallel to the platen, is normally prohibited from moving by engagement with the locking member, and sets a stop position when the carrier moves in the approach direction; an operating member that enables the movement of the tab and disables the movement of the tab upon return of the operation; an interlocking switch that switches and operates in conjunction with the operation of the operating member and the return of the operation; When the switching operation is performed in conjunction with the operation of the member, the drive motor is operated to move the carrier in the opposite direction of the tab,
The interlocking switch also includes a drive circuit that operates the drive motor in reverse to move the carrier in the direction of the tab when the interlocking switch is switched in conjunction with the return of the operation of the operating member, and the printing operation is controlled by the carrier. A serial printer characterized in that the operation is performed when moving in a direction opposite to the tab. 2. The operating member has a locking piece and is movably attached to the tab so that the locking piece can be engaged with and disengaged from the locking member, and the interlocking switch is also attached to the tab, and the operating member The serial number according to claim 1, wherein the locking piece is disengaged from the locking member by moving the locking member in one direction, and the interlocking switch is biased by the operating member. printer. 3. The locking member is a threaded shaft, and the tab is screwed onto the threaded shaft, and the operating member is provided so as to be freely engageable and detachable from one end of the threaded shaft, and the operating member is engaged with the threaded shaft in a direction. Claim 1, characterized in that the interlocking switch is biased by the operating member when the tab is moved, and the operating member is rotated to rotate the screw shaft and move the tab. Serial printer mentioned in section.