JP3329368B2 - Inkjet printer - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an ink jet printer, and more particularly, to an ink jet printer characterized by a paper guide plate provided on a paper transport path.

[0002]

2. Description of the Related Art In general, a printer synchronizes an operation of feeding recording paper into a recording / writing section with a recording / writing operation.
If a paper jam occurs on the paper feed side or a paper feed failure occurs, the ink droplets that have been hit will smear the printing surface, and the ejected ink will flow down to the drive rollers and power supply side, and the paper feed function will function. Problems such as loss of security and security.

In order to solve such a problem, there has been proposed an ink absorbing material attached to a printing surface so as to prevent ink from dripping to other portions. In addition, there arises a problem that the back surface of the recording paper is contaminated by the ink contained in the absorbing material.

[0004]

SUMMARY OF THE INVENTION The present invention has been made in view of such a problem.
It is an object of the present invention to provide a new ink jet printer which can dry ink droplets from a printing surface at an early stage and discharge them without any trouble even if they occur.

[0005]

That is, the present invention is directed to an ink jet printer for accomplishing such a task, which is an ink jet printer of a type which performs recording and writing with ink droplets on recording paper fed to a recording and writing section. In addition, a printing surface facing the recording head is provided with an inclination angle that becomes lower toward the lower side in the paper conveyance direction, and a groove for discharging ink is continuously provided at a lower end portion of the printing surface.

[0006]

Embodiments of the present invention will be described below. FIG. 1 shows an embodiment of the present invention.
In the figure, reference numeral 1 denotes a printer main body.
Indicates that the recording paper S from a paper feed tray (not shown) is sent to the recording / writing unit by the paper feed roller pairs 2 and 2, the recording is performed by the recording head 4 mounted on the carriage 3, and then the recording paper S is moved downward in the paper transport direction. The first and second paper discharge rollers 5 and 6 are arranged to discharge the paper to a stacker (not shown).

In the drawing, reference numeral 11 denotes a paper guide plate provided on the lower side of the pair of paper feed rollers 2 and 2, and a portion of the paper guide plate 11 facing the recording head 4 has a paper transport direction. A printing surface 12 having an inclined angle that becomes lower toward the lower side is formed, and further formed on the lower side is a groove 13 for discharging ink having a U-shaped cross section for discharging ink flowing down from the printing surface 12. Are integrally formed so as to also serve as a concave portion for accommodating the paper discharge roller 5, and the ink discharge groove 13 communicates with a discharge ink tank (not shown).

In the embodiment configured as described above, if the recording paper S is not fed into the recording / writing unit due to a paper jam or a paper feeding failure occurring on the paper feeding side, an empty The ejected ink droplets are directly discharged onto the printing surface 12.

However, as described above, the printing surface 12
The ink droplets discharged here flow down along the slope into the ink discharge groove 13 and are discharged to the discharge ink tank from here. Further, the ink adhering to the printing surface 12 dries immediately, and even if the recording paper comes into contact with this portion, it is possible to prevent a situation in which the ink is contaminated by the remaining amount of ink.

[0010]

As described above, according to the present invention, the printing surface facing the recording head is provided with a downward slope toward the lower side in the paper transport direction, and the lower end of the printing surface is used for discharging ink. Since grooves are provided in a row, even if ink drops are ejected due to unstable paper feeding, ink ejected on the printing surface immediately flows down to the discharge grooves, speeding up drying of the printing surface and contaminating the recording paper. Can be prevented beforehand.

Moreover, since the inside of the ink discharge groove is used as a space for disposing the paper discharge roller, the printer can be made compact despite the provision of the ink discharge groove.

[Brief description of the drawings]

FIG. 1 is a side view of an ink jet printer according to an embodiment of the present invention.

[Explanation of symbols]

 4 Recording Head 5 Discharge Roller 11 Paper Guide Plate 12 Printing Surface 13 Groove for Ink Discharge S Recording Paper

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int.Cl. ⁷ , DB name) B41J 2/01 B41J 11/02 B41J 13/02

Claims (1)

(57) [Claims] 1. A ink jet printer of the type which performs recording write on the recording paper fed to the recording write unit by a paper feed roller by Lee ink droplets, the paper conveyance direction unskilled in the recording head portion facing the paper guide plate to form a printed surface obtained by applying a tilt angle decreases towards the side, forming a groove for ink discharge to the downstream side of the sign <br/> shaped surface, the discharge roller a groove for the ink discharge An ink jet printer characterized by being a recess .