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Paper detection and printing method and system of a hand-held printer

A printing system and printer technology, applied in printing devices, printing, etc., can solve problems such as easy paper jams, inaccurate judgment of paper position, and skewed printed characters, so as to achieve accurate positioning and avoid skewing effects

Active Publication Date: 2022-04-12
SHANGHAI SUMI TECH CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, before the paper is fed, the motor needs to be reversed to return the paper for positioning. Due to the size of the paper bin and the torque of the motor, paper jams are prone to occur, and it is affected by the different opening and closing states of the paper bin cover to determine the position of the paper. Not accurate, causing the printed word to be skewed

Method used

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  • Paper detection and printing method and system of a hand-held printer
  • Paper detection and printing method and system of a hand-held printer
  • Paper detection and printing method and system of a hand-held printer

Examples

Experimental program
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Embodiment 1

[0047] An embodiment of the present invention, such as figure 1 As shown, the present invention provides a hand-held printer paper detection and printing method, comprising steps:

[0048] S1. Install a light source and a photoresistor array on the inner wall of the paper bin.

[0049] Preferably, the light source is a single light source, to prevent the light emitted by each light source from being reflected by the paper and affect each other, and the area of ​​the photoresistor array should be designed to be large enough to ensure that all emitted light from the paper can be detected.

[0050] S2. Obtain the distribution image of the reflected light after the light emitted by the light source is reflected by the paper roll in the paper bin through the photoresistor array.

[0051] S3. Determine the type of paper on the paper roll according to the intensity of the reflected light.

[0052] S4. Calculate the position of the paper on the paper roll according to the distributi...

Embodiment 2

[0056] An embodiment of the present invention, on the basis of Embodiment 1, judges the type of paper on the paper roll according to the intensity of reflected light, specifically includes:

[0057] S31. Obtain intensity thresholds of reflected light reflected by different types of paper under light from a light source through big data or deep learning.

[0058] S32. Determine the type of each paper on the paper roll according to the intensity of the current emitted light.

[0059] Specifically, since different types of paper have different intensities of reflected light, it is possible to use big data or use the light source in the printer for deep learning training to obtain the intensity threshold of reflected light reflected by different types of paper under the light of the light source , after obtaining the intensity of the current emitted light, the type of each paper on the paper roll can be judged.

[0060] Preferably, the position of the paper on the paper roll is c...

Embodiment 3

[0073] An embodiment of the present invention, such as image 3 As shown, the present invention also provides a hand-held printer paper detection and printing system, including a light source 1, a photoresistor array 2 and a microcontroller.

[0074] The light source 1 is installed on the inner wall of the paper chamber 3 of the printer, and is arranged facing the paper roll 4 . Preferably, the light source is a single light source, so as to prevent the light emitted by each light source from being reflected by the paper to affect each other.

[0075] The photoresistor array 2 is arranged on the inner wall of the paper bin 3, and is used to receive the reflected light emitted by the light source after being reflected by the paper roll 4, and obtain the distribution image of the reflected light. Preferably, the area of ​​the photoresistor array should be designed to be large enough to ensure that all emitted light from the paper can be detected.

[0076] The microcontroller i...

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PUM

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Abstract

The present invention provides a hand-held printer paper inspection and printing method and system, comprising the steps of: setting a light source and a photoresistor array on the inner wall of a paper bin; The distribution image of the reflected light reflected by the roll; judging the type of paper on the paper roll according to the intensity of the reflected light; calculating the position of the paper on the paper roll according to the distribution image; according to the position of the paper on the paper roll The position controls the thermal head of the printer to print. This solution does not need to feed or unload paper, so that paper jams can be avoided, and paper detection and positioning are more accurate, and printing fonts can be avoided from skewing, which is beneficial to the use of handheld printers.

Description

technical field [0001] The invention relates to the technical field of hand-held printers, in particular to a method and system for paper detection and printing of hand-held printers. Background technique [0002] Before the existing handheld printer is used, the system will detect the paper in the printer, including detecting whether there is paper in the printer, whether the paper is thermal paper, label paper, black mark paper, etc. The existing detection method is to detect by means of through-beam photoelectric sensors, transmissive photoelectric sensors, light sources, etc., and the detection requires a motor to cooperate with the paper. However, before the paper is fed, the motor needs to reverse and eject the paper for positioning. Due to the size of the paper bin and the torque of the motor, it is easy to cause paper jams, and it is affected by the different opening and closing states of the paper bin cover to determine the position of the paper. Not accurate, resu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B41J11/00B41J2/32B41J29/393
CPCB41J11/009B41J11/00B41J2/32B41J29/393
Inventor 包嘉裕林喆
Owner SHANGHAI SUMI TECH CO LTD