Automatic checking and regulating device at printing interval of printer

Abstract

The invention discloses an automatic detection and adjustment device for the printing gap of a printer, which comprises a character frame installed on the eccentric shaft of the character carriage, and the eccentric pivots at both ends of the eccentric shaft of the character carriage are connected to the printer support, and the printer support is provided with There are stepper motors, transmission gear sets, grating sheets and photoelectric sensors corresponding to the grating sheets. The transmission gear set includes transmission gear I, transmission gear II, and transmission gear III. The grating sheet is coaxial with transmission gear I Fixedly installed on the transmission shaft of the stepper motor, the eccentric shaft of the word car is coaxially fixed with the transmission gear III, and the transmission gear II is arranged between the transmission gear III and the transmission gear I; the present invention requires The character frame touches the paper, so the detected paper thickness is the actual thickness of the paper, and then the character frame rises back to the height of the printing gap set by the software, thus ensuring the correctness and stability of the printing gap.

Description

technical field [0001] The invention relates to a printer, specifically a printer printing gap automatic detection and adjustment device. Background technique [0002] At present, the adjustment of the printing gap of the existing dot matrix printers is generally by turning the manual adjustment lever, and the eccentric shaft of the leading carriage rotates, so that the leading carriage moves up and down, and reaches the preset paper thickness gear. . However, for different types of paper, the thickness varies, so the user will frequently toggle the manual adjustment lever by hand, causing great inconvenience to the user. Moreover, due to the difference in paper quality, it will also cause practical problems such as the difficulty in corresponding between the actual thickness and the number of paper sheets. In this way, the operation of adjusting the printing gap of the printer by turning the manual adjustment lever to the preset paper thickness gear will be difficult to c...

AI Technical Summary

Problems solved by technology

However, for different types of paper, the thickness varies, so the user must frequently toggle the manual adjustment lever by hand, causing great inconvenience to the user

Moreover, due to the difference in paper quality, it will also cause practical problems such as the difficulty in corresponding between the actual thickness and the number of paper sheets.

In this way, the operation of adjusting the printing gap of the printer by turning the manual adjustment lever to the preset paper thickness gear will be difficult to correspond to the actual printed paper thickness.

This will often make the printing gap too large or too small, which directly affects the printing quality, making the printing effect faint and blurred (the printing gap is too large), or causing the print head to jam the ribbon (the printing gap is too small)

These will affect the quality and service life of the printer

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