The working principle of bar code printer _ printing equipment

takeaway: bar code printers, DSP data processing, is a way of data transformation, namely computer send graphics commands to bar code machine, bar code machine through the data storage, data processing, and then drive the print head temperature sensor hot print related content.

bar code printer principle can be divided into several parts:

1, bar code printers, thermal printing principle 2, 3 bar code printers, label transmission technology principle, bar code printer carbon belt transmission technology principle ( Thermal transfer mode) 4, bar code printer sensor automatic detection principle 5, bar code printer DSP data processing principle

bar code printer principle analysis:

1, bar code printers, thermal printing principle

there are two main types of bar code printers, thermal printing, a thermal paper is also the way, which is often said that the thermal way; Which is a way of transfer printing ink ribbon, is often said that the heat transfer.

thermal printer, bar code printer works is that the print hot hair, medium thermal label on bar code printers, the print head of hair color change after heating, hot place shows to print content. Using thermal printing media, under the action of the sun will become weak gradually, to save time is shorter, Usually no more than 6 months) 。 While many applications need to save the label for a long time, it will need to use the principle of thermal transfer printing, Currently ricoh company launched a special thermal paper, can be stored for six years time) 。

thermal transfer printing, bar code printer works is that use thermal transfer with carbon as the medium to print on label printing medium. Computer control bar code printer to print the hair heat, heat transfer with carbon carbon powder coating in print hair hot thermal action and the print head pressure, melt and heat transfer to the label printing media, shown to print graphics and text. Use thermal transfer printing label, according to the material and the use of carbon labels with the material of different can save more time, such as using the resin base carbon with print durability of PET tag can usually save 3 - 5 years, even longer.

2, bar code printers, label transmission technology principle

bar code printers, label drive at present there are two ways, one is the manner in which the print head roller, a kind of is the manner in which the print head hanging pressure, pressing the way before general adoption of the roller drive into the paper ( Some of the wide before and after the barcode machine also will use the roller drive at the same time) , pressure is the way the front and rear double roller drive into the way of paper, so the flat way, the print head, label, before the roller is in a state of compression, and dangerous pressure method, the print head, tag, front roller can be in a state of incomplete compaction.

tag mechanism both flat pressure method, and the paper in suspension modes, all use the same motor drive, if it is double roll shaft drive, generally USES the belt drive two roll, bar code printer principle, this one is the most can determine a standard bar code printers, durability, good durability bar code printer's gear drive belt are metal parts, ensure the barcode machine in high speed transmission of the structure of the life, such as Zebra 110 xiiii models.

bar code printer accessories of transmission, such as bar code printer back roll, bar code printers, stripping, and the feed mechanism of drive motor.

3 technology principle, bar code printer carbon belt transmission ( Thermal transfer mode)

there are two kinds of bar code printer carbon belt transmission ways, one is used to label into the same drive motor, paper one is driven by single motor ( Common in suspension pressure type printing way) 。

when the barcode and label printer carbon belt transmission mechanism using a set of drive motor, the paper in between each other is through the belt transmission energy, carbon belt shaft generally has two, carbon belt shaft is a drive shaft, in front of the back of the carbon belt shaft is driven shaft, drive shaft by motor driven, as the label paper printing and synchronous movement, the driven shaft or damping spring damping on make carbon belt in the straightening flat state.

when the bar code printer carbon belt transmission using single motor drive, generally USES before and after the double motor to control the movement of carbon belt, which can implement barcode printing is the main benefit of carbon with the function of saving.

4, bar code printer sensor automatic detection principle

bar code printer sensor automatic detection mainly includes three parts:

1) label positioning sensors

the label positioning sensors, can detect interval the number of the tag, black marking label, label.

(2) carbon belt detection sensor

the carbon with sensors that can detect heat transfer mode, the carbon with installation? Carbon belt run out?

(3) the print head opening and closing detection sensor

the print head opening and closing detection sensor, can detect the print head is properly closed?

5, bar code printer DSP data processing principle

bar code printer DSP data processing, is a way of data transformation, namely computer send graphics commands to barcode printer, barcode machine through the data storage, data processing, and then drive the print head temperature sensor hot print related content.