Flat-bed printer

Abstract

The invention discloses a flat-bed printer which comprises a paper guide plate, a left side plate, a right side plate and a support seat, wherein a front upper paper guide base provided with a paper pickup star wheel is fixedly arranged on the paper guide plate; an ink jet head is arranged on the support seat; a front paper guide roller which is positioned in front of the ink jet head and is matched with the paper pickup star wheel is arranged between the left side plate and the right side plate; a top plate is hinged to the upper paper guide base; a batten is formed on the top plate; a front paper pickup roller which can be lifted along with the action of the top plate is arranged on the top plate; the front paper pickup roller penetrates through the square hole in the front upper paper guide base and then is matched with the front paper guide roller; an eccentric wheel abutted against the bottom end surface of the batten is arranged on the right side plate; a gear is formed on the side wall of the eccentric wheel; the gear is connected with the output end of a motor on the right side plate through a gear set; a rear paper guide roller positioned at the rear part of the ink jet head is also arranged between the left side plate and the right side plate; a rear upper paper guide base is fixedly arranged on the bottom side of the support seat; and a rear paper pickup roller matched with the rear paper guide roller is arranged on the rear upper paper guide base.

Description

technical field [0001] The invention relates to a printer, in particular to a flat-push printer with a straight-line paper feeding path and printing media that advance forward and exit. Background technique [0002] Traditional inkjet printers have little friction due to the small contact area between the star wheel and the printing medium. If the star wheel is used to feed the paper under the nozzle for printing, the printing accuracy cannot be guaranteed; and if the star wheel is replaced with a The pickup roller with a large contact area on the printing medium will cause the pickup roller to scratch the ink that has not dried up when the paper is discharged, distorting the image, and at the same time, the ink that sticks to the pickup roller will also stain the paper passing behind , for this reason, the paper feed channel on traditional inkjet printers is designed as L-shaped or C-shaped, such as figure 1 with figure 2 As shown, the printing medium 1A enters the print...

AI Technical Summary

Problems solved by technology

However, this L-shaped or C-shaped paper feeding channel cannot feed paper from the front, and has certain restrictions on the softness of the printing medium. For thicker printing media, it will fail to feed paper or fail to feed paper, which will easily cause paper jams. phenomenon, the wear and tear on the relevant parts of the printer is also serious, shortening the service life of the printer, and the structure is complex and takes up space

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