JPS5859874A - Recorder - Google Patents

Abstract

PURPOSE:To exactly feed or discharge recording papers by removing static electricity charged on the recording papers being fed by providing a static electricity removing function for a feeding guide in the recording paper pathway of a recorder. CONSTITUTION:A recording paper 2 supplied from a cassette and fed to a recording head 23 through feeding rollers 7A and 7B is deprived of static electricity charged by means of the static electricity removing brush 32 of a feeding guide 25, during which curls, etc., are also removed by stroking, etc. Then, the recording paper 2 is attracted on an attracting plate 21 by an air blow fan 21 to keep it flat and then recorded by the recording head 23. The recorded paper 2 is further sent and then discharged by blowing air from an opening 27 in a pathway 26A without being attracted on the pathway 26A by static electricity. An static electricity removing brush used is the one consisting of a brush base 31 flocked with carbon fiber 32, etc., and a backing material 33 of an elastomer.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a recording apparatus, and particularly to a recording apparatus in which a conveyance guide of a conveyance path for conveying recording paper is provided with a static electricity eliminating function to eliminate static electricity during conveyance.

The recording paper stored in the paper cassette is conveyed to the recording section while being held between rubber rollers, metal rollers 2, etc. for recording, and the recorded recording paper is further ejected to the paper output tray by the above-mentioned rollers, etc. In such a recording apparatus, the recording paper is likely to be charged with static electricity due to friction between the row 2 and the recording paper. When the recording paper is charged with static electricity, the conveyance speed of the recording paper decreases, and the flatness of the recording paper in the recording section is difficult to maintain, leading to a decrease in image quality. Furthermore, there is a risk that the paper may be attracted to the conveyance path when the paper is ejected, and the paper may not be ejected to the paper ejection tray.

SUMMARY OF THE INVENTION An object of the present invention is to provide a recording apparatus in which static electricity is removed from a recording paper during transportation by providing a transport guide of a recording paper transport path with a static electricity elimination function in order to eliminate static electricity from the conventional drawbacks. Then there it is.

Hereinafter, the present invention will be described in detail based on the drawings.

FIG. 1 shows an embodiment of the present invention, where I is a paper cassette in which recording paper is stored.

The paper cassette (paper cassette) has an upper lid on which a paper discharge tray J is attached, and this upper lid prevents dirt and paper from entering the cassette I. j is the paper feed roller and % roller!
The recording paper is pushed EE while being rotated, thereby feeding the recording paper one by one. Timing controllers 4A and 1B are rotated in synchronization with reading by a document reading section (not shown), thereby synchronizing the recording position on the recording paper and the reading position by the reading section.

7A~/θ person and 7B~/σB are transport rollers 41/~
14 are conveyance paths n, n and /? The recording sheets fed from the cassettes are conveyed via these rows 27A to 10k, 7B to 10B and conveyance paths i to 19. X is a porous suction plate made of bunching metal, etc. U is a fan that blows air in the direction of the arrow.
and n is a recording means such as an inkjet head,
7. A suction plate xK@ of the recording paper is placed on the recording paper by means of an anchor 1 to ensure the flatness of the recording paper and to maintain a constant distance between the heads n, B and the recording paper. 2 and B are static electricity removal brushes serving as conveyance guides whose details are shown in FIG.

FIG. 2 shows an example of a static electricity removal pusher, which has a three-hole pushbutton base and is made of aluminum, for example. B
Reference numeral 2 denotes a brush with bristles flocked to the base 31. For example, carbon fibers made from Tade's carbon fibers are used.

Further, n is a backing member made of an elastic body, for example, Mylar (trade name) is used.

Further, ``F'' is an air blowing guide, which raises the air discharged from the fan along the guide gK, and blows the air as shown by arrow B from an opening 1 made in the conveyance path xA at the upper part of the guide.

FIG. 1 is a perspective view of the recording apparatus of FIG. 1 viewed from the recording head side, and the present invention will be described in further detail with reference to FIG. Here, the recording head 〃 is an inkjet head that performs red recording, and the head B is an inkjet head that performs black recording, and a signal from a reading section (not shown) is converted into a value signal by a control circuit (not shown). Red and black recording can be performed by driving one head or both heads. Also, this recording head 22, 2Jk O-rough A ~ 101.7B-10R
, transport guide 3. It is assumed that the B1 fan 1, the ventilation guide, etc. are supported by support means (not shown). That is, in one aspect of the present invention, the suction plate X is fixed. , Also, among the ventilation holes 1 drilled on the suction plate xK, the distance between the holes drilled at one end perpendicular to the feeding direction of the recording paper and the holes drilled at the other end is determined from the width dimension of the recording paper If the recording paper is kept small, when the recording paper is conveyed, the leading corner of the recording paper may enter the hole IK, causing a flapping sound, speed fluctuations, or a jam. In addition, a plurality of openings 1 of the conveying path A formed at the upper part of the ventilation guide are made in the width direction of the recording paper, and the width thereof is made smaller than the width of the recording paper. Make sure that the tip of the screw does not enter this MCIH.

The operation of the recording apparatus configured as described above will be explained with reference to FIGS. 1 to 1, but it will be assumed that recording is performed only with the black head n. First, when a document reading unit (not shown) starts reading a document, the paper feed row 21 starts rotating and feeds only one recording paper in the cassette and tray l.
It is resisted by yg tag 1 and 4B. here%
Ting-in-low FAA and A in synchronization with document reading
B is rotated, and when the leading edge of the recording paper reaches the recording head B, the driving of the recording head n is started to record an image. The read information may be stored and recorded in a memory once.

Here, when the recording paper is transported to the recording head n via the transport path 〃 and /l, the removal pusher J of the transport guide
2 (see Figures 2 (A) and CB)), the static electricity charged on the recording paper is removed, and the brush J2
As the recording paper 2 is squeezed, curls and the like on the recording paper 1 are removed. In addition, since the width of the opening d of the mounting plate X is smaller than the width of the recording paper 2, there is no risk that the leading edge of the recording paper 2 will enter the opening X.

Therefore, when recording with &2 recording head n, the recording paper λ
is attracted to the plate XIC to maintain the desired flatness, and furthermore, the gap between the recording head n and the recording paper is kept constant, so it is expected that the quality of recorded images will be improved.

The recorded recording paper after recording with recording head n is
Conveyance roller PA, B1 conveyance path n and conveyance port -9/(
1, /(The paper is ejected via IN, but the paper is ejected from the transport roller 10k.
, A ventilation opening 1 is opened in the transport path after IOBg, and the air from the ventilation fan l is sent upward, so even if the recording paper JK is charged with static electricity, the ventilation opening 1 is not transported. The recording paper is reliably ejected to the paper ejection tray J without fear of being attracted to the path gA.

In addition, since this paper ejection tray 3 uses the upper surface of the top cover of the cassette l, there is no need to provide a separate paper ejection tray.
This leads to a reduction in the number of parts, which also makes it possible to reduce costs.

As explained above, according to the present invention, since a static elimination function is added to the conveyance guide, a static elimination means for static elimination is unnecessary, and the number of parts can be reduced.

Furthermore, as in the embodiments of the present invention, if a conveyance guide with a static elimination function is provided upstream of the recording means, the static electricity charged on the recording paper can be removed upstream of the recording means.
The transport speed during recording can be kept constant, and the image quality can be improved.

It goes without saying that the present invention can be applied to any type of recording device 8wI copying device or printing device in which recording paper is conveyed by being held between rubber rollers, metal rollers 2, or the like.

[Brief explanation of the drawing]

Figure m/ is a configuration diagram showing an example of the configuration of the recording apparatus of the present invention;
Fig. 3 is a perspective view of the recording device shown in Fig. 1.
・Paper output tray, 4L-top lid, ! ...Paper feed row 2, 4A, All...Tie-built long row-2゜7A~101,7B~/σB-...Conveyance roller, //~)4...Conveyance path member, i~/9
・-Conveyance path, X-・Suction plate, 1...Blower fan, n, 2? ... Recording head, 2#, B...
・Conveyance guide, bu・-Blower guide, xA...conveyance path, 1...opening, 1...hole, J/・
...Plaque base, 3λ...Brush, 33...
Guaranteed money. Figure 2

Claims (1)

[Scope of Claims] 1) In a recording apparatus that transports a recording paper along a transport path formed by a transport path member and records on the recording paper by a recording means, the A recording apparatus comprising a conveyance guide that guides the conveyance of paper and eliminates static electricity charged on the recording paper. 2. Claims I! In the recording device described in @/ section,
A recording apparatus characterized in that the conveyance guide is provided on the conveyance path upstream of the recording means.