Printing device, and method of adjusting a printing device

By forming and reading the marking section during multiple strokes of the printing device, the problem of inaccurate ink spraying position caused by carriage vibration is solved, achieving high-precision printing image adjustment, reducing ink and media consumption, and shortening printing time.

CN122830248APending Publication Date: 2026-09-29SEIKO EPSON CORP
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Patent Information

Application Number
CN202610347383.2
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Priority Date
2025-03-25
Filing Date
2026-03-20
Publication Date
2026-09-29

AI Technical Summary

Technical Problem

Existing printing equipment has difficulty in accurately adjusting the ink droplet spray position during the printing process, especially under the influence of vibration caused by carriage movement, which leads to a decrease in the accuracy of the printed image.

Method used

The method employs a multi-stroke main scan and sub-scan method. By forming and reading the first and second marking sections in the preceding and subsequent strokes respectively, the state of the liquid sprayed onto the medium is read using the reading section, and the spraying position of the ink relative to the medium is adjusted based on the relative positional relationship of the marking sections.

Benefits of technology

Even when there is vibration on the medium and the reading unit, the ink spray position relative to the medium can be precisely adjusted, improving the accuracy of the printed image, reducing the consumption of ink and medium for adjustment, and shortening the printing time.

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Abstract

This invention provides a printing apparatus and a method for adjusting the liquid spray position relative to the medium with good accuracy even when there is relative vibration between the medium and the reading unit. The printing apparatus includes a recording head, a control unit, and a reading unit. In a preliminary stroke, the control unit controls the formation of a first image, including a first identifier, on the medium to form a portion of the printed image. In a subsequent stroke, it controls the formation of a second image, including a second identifier, on the medium in a manner overlapping the first image while maintaining the readability of the first identifier. When the reading unit is capable of reading both the first and second identifiers, it reads both identifiers simultaneously. The control unit adjusts the liquid spray position relative to the medium based on the relative positional relationship between the first and second identifiers as determined by the reading result obtained by the reading unit.
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