JPH02255352A - Adjusting apparatus for distance of paper of printer - Google Patents

Abstract

PURPOSE:To automatically set the suitable distance of a paper at all times thereby to realize proper printing by providing an operating unit which selects the distance of said paper set for every displayed detent number and most fit for corresponding conditions to said detent number, and a controlling unit which drives a stepping motor until the distance of the paper selected by said operating unit is obtained. CONSTITUTION:A printing paper 2 is mounted on a platen 1. A printing head 3 is provided on a carrier unit 4 which is supported by a shaft 5 and an eccentric shaft 6. The eccentric shaft 6 is coupled to a shaft of a stepping motor 11 at an eccentric position so as to be rotated in an eccentric fashion. The rotation of the eccentric shaft 6 invites a circular movement of the carrier unit 4 around the shaft 5. A detent number of a display unit 8 is set by switching an operating unit 7, and the stepping motor 11 is rotated by the amount corresponding to the detent number through a controlling unit 9 and a motor driving unit 10. Thus, the printing distance can be adjusted.

Description

Detailed Description of the Invention [Industrial Application Field] The present invention relates to a paper spacing adjustment device for a printer, which adjusts the paper spacing between a print head and a paper on a platen facing this printing spatula. The present invention relates to a spacing adjustment device.

[Prior Art] A conventional paper interval adjustment device is composed of, for example, an eccentric shaft inserted through a carrier unit in which a print head is mounted, and a detent lever directly connected to the eccentric shaft. Paper spacing was adjusted by eccentrically rotating an eccentric shaft.

[Problems to be Solved by the Invention] However, in the above-mentioned conventional sheet spacing adjustment device, if the detent lever is located inside the device, the detent lever cannot be adjusted unless the power is turned off and the cover is opened. The drawback is that it is difficult and complicated to adjust.

Also, for those with an external detent lever,
The detent lever is easily damaged during transportation, and the detent lever may be moved by mistake during operation, resulting in printing at inappropriate paper intervals.

[Means for Solving the Problems] The technical means of the present invention for solving such problems is to eccentrically rotate an eccentric shaft inserted into a carrier unit on which a print head is mounted, and to connect the print head and the In a paper spacing adjustment device for a printer that adjusts the paper spacing between paper on a platen facing the print head according to paper conditions related to paper thickness and type, a stepping motor that eccentrically rotates the eccentric shaft and a drive signal are used. a motor drive unit that drives and holds the stepping motor based on the
A display unit that displays the above-mentioned paper conditions and a detent number determined for each paper condition, and an operation unit that selects the optimal paper spacing for the paper conditions determined for each displayed detent number and corresponding to the detent 1 to number. , and a control section that sends out the drive signal to drive the stepping motor until the paper interval selected by the operation section is reached.

[Embodiment] Hereinafter, a paper interval adjustment device for a printer according to an embodiment of the present invention will be described based on the accompanying drawings.

As shown in FIG. 1, the paper interval adjustment device according to this embodiment includes a carrier unit 4 on which a print head 3 is mounted,
The carrier unit 4 is provided with an eccentric shaft 6 and a shaft 5 inserted through the carrier unit 4, and the eccentric shaft 6 is eccentrically rotated to rotate the carrier unit 4 around the shaft 5, so as to face the print head 3 and the print head 3. The paper interval between the paper 2 on the platen 1 and the paper 2 is adjusted in accordance with the paper conditions related to the thickness and type of paper. The paper spacing adjustment device of this printer includes a stepping motor 11 that eccentrically rotates the eccentric shaft 6, a motor drive unit 10 that drives and holds the stepping motor 11 based on a drive signal, and a paper interval adjustment device that is configured for the above paper conditions and for each paper condition. A display section 8 that displays the detent number, an operation section 7 that is determined for each displayed detent number and selects the optimal paper interval for the paper conditions corresponding to the detent number, and a paper selected by the operation section 7. and a control unit 9 that sends the drive signal to the motor drive unit 10 to drive the stepping motor 11 until the interval is reached. FIG. 2 shows an example of the display section 8. As shown in FIG. The detent number, paper thickness of printing paper, and type of printing paper are displayed. That is,
A printing paper 2 is placed on a platen 1. The print head 3 is arranged on a carrier unit 4, and the carrier unit 4 is further supported by two shafts 5 and an eccentric shaft 6. The shaft of a stepping motor 11 is connected to an eccentric position of the eccentric shaft 6 so that the eccentric shaft 6 rotates eccentrically, and the rotation of the eccentric shaft 6 causes the carrier unit 4 to perform a circular motion about the shaft 5. The detent number on the display section 8 is set by the switch on the operation section 7, and the stepping motor 1 is controlled via the control section 9 and the motor drive section 10.
1 by a set amount corresponding to the detent number and held there to adjust the printing interval.

Therefore, according to this embodiment, before printing by the printer, the paper conditions displayed on the display section 8 are checked and the required paper spacing is selected by the switch on the operation section 7 corresponding to the corresponding detent number. As a result, a drive signal corresponding to the motor drive unit 10 is sent from the control unit 9, and the motor drive unit 1
0 drives the stepping motor 11 based on this drive signal until the selected paper interval is reached.

2. Control unit [Advantageous effect of the invention 10: Motor drive unit As explained above, according to the paper spacing adjustment device for the printer of the present invention, an appropriate paper spacing can always be automatically set according to the settings of the operating unit. Therefore, it is possible to perform proper printing, and the operation is simple, so there is no complication, and the paper spacing can be easily checked from the display, so it is easy to set the paper spacing incorrectly. There are various effects that can suppress such a situation.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing a paper interval adjustment device for a printer according to an embodiment of the present invention, and FIG. 2 is a diagram showing an example of a display section. 1 Nibraten 2: Print paper 3: Print head 4: Carrier unit 5: Shaft 6: Eccentric shaft 7: Operation unit 8:
Display section

Claims (1)

[Claims] The eccentric shaft inserted into the carrier unit equipped with the print head is rotated eccentrically to adjust the paper distance between the print head and the paper on the platen facing the print head according to paper conditions related to paper thickness and type. In a paper spacing adjustment device for a printer, a stepping motor eccentrically rotates the eccentric shaft, a motor drive unit that drives and holds the stepping motor based on a drive signal, and displays the paper conditions and a detent number determined for each paper condition. an operating section that selects the paper spacing that is determined for each displayed detent number and is optimal for the paper conditions corresponding to the detent number; and an operating section that operates the stepping motor until the paper spacing selected by the operating section is reached. and a control section that sends out the drive signal for driving the paper spacing adjustment device for a printer.