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Driving method for driven object, and driving device and printer of using same

A technology of a driven body and a driving method, applied in printing devices, kerning mechanisms, motor-generator control, etc., can solve problems such as difficulty in repair or adjustment, non-uniformity, lack of mass productivity, etc., to eliminate elongation or spacing changes, eliminating stop lag, maintaining print quality

Inactive Publication Date: 2005-02-16
FUJIFILM BUSINESS INNOVATION CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] However, because the resonance frequency of the drive system is not a single frequency, but also changes with the number of paper feeding steps, it is practically impossible to avoid the influence of resonance through the mechanical design of the drive device.
In addition, even if the stop hysteresis caused by resonance can be shortened to some extent by the mechanical design of the drive device, the resonance frequency will change if only the specification or position of one component of the drive device is changed. The detailed mechanical design and manufacture of each variety lacks mass production, and it becomes difficult to repair or adjust

Method used

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  • Driving method for driven object, and driving device and printer of using same
  • Driving method for driven object, and driving device and printer of using same
  • Driving method for driven object, and driving device and printer of using same

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Embodiment Construction

[0038] Hereinafter, preferred embodiments of the present invention will be specifically described with reference to the accompanying drawings.

[0039]figure 1 It is a partial schematic side view of an impact printer employing a driving device for a driven body according to the present invention, in which a paper sheet made of continuous paper as a conveyed body is arranged in the gap between the recording head 1 and the platen roller 2 The transport path of the recording paper 3 and the transport path of the ink ribbon 4 . The recording paper 3 is conveyed in the direction of the arrow by the upper paper feeder 5 and the lower paper feeder 6 . The upper paper feeder 5 and the lower paper feeder 6 are rotationally driven by a stepping motor 7 via a pulley 7a and an endless belt 8 mounted on the rotating shaft 7b of the stepping motor 7 . The endless belt 8 adjusts the tension by the belt pulley 9.

[0040] figure 2 Yes figure 1 A partial schematic top view of an impact pr...

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Abstract

A driving device drives a body to be driven and is provided with a stepping motor, an MPU(microprocessing unit) for controlling paper feed motor that controls the stepping motor, and a power transmission device that includes an endless transmission means and transmits the power of the stepping motor to the body to be driven. A ROM for storing the pulse train of an excitation pulse being supplied to the stepping motor for each drive step for continuously driving the stepping motor is provided, the pulse train being stored in the ROM is set to avoid a frequency near the resonance frequency of a drive system that is composed of the stepping motor, the power transmission device, and the body to be driven, and the MPU for controlling paper feed motor reads the pulse train from the ROM according to the number of drive steps and supplies the excitation pulse to the stepping motor.

Description

technical field [0001] The present invention relates to, for example, a driving method and a driving device for a driven body that is driven by a stepping motor via a ring gear, as in a paper conveying device of a dot-matrix impact printer, and a printer using them. Background technique [0002] As the driving device of the driven body used in, for example, dot matrix impact printers, there is such a structure that as the printing progresses, the continuous paper used as the driven body is intermittently conveyed by the stepping motor through the endless belt. . [0003] For the driving device of this kind of driven body, there is such a problem that because the power is transmitted by the endless belt, the vibration near the resonance frequency is very large. It will take some time for the impact to stop. [0004] Especially, for the dot-matrix impact printer that can print at high speed, since printing and paper feeding are alternately repeated in a short time, the time ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B41J11/42B41J3/00B41J15/00B41J19/18B41J19/30B41J23/00B41J29/38H02P8/00H02P8/14H02P8/32
CPCY02P70/10B41J29/38H02P21/00
Inventor 藤本博
Owner FUJIFILM BUSINESS INNOVATION CORP
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