JPS5859875A - Recorder - Google Patents

Abstract

PURPOSE:To remove curls, etc. of a recording paper as well as to prevent the occurrence of jamming while feeding in the pathway of the recording paper by forming an aperture having a diameter smaller than the thickness of the recording paper and also providing an elastic feeding guide in the pathway. CONSTITUTION:A recording paper 2 supplied from a cassette and sent to a recording head 23 through feeding rollers 7A and 7B is deprived of its curls, etc., by squeezing when passing through an aperture of a diameter (d) smaller than the thickness (t) of the paper 2 between elastic feeding guides 24 and 25 and an attracting plate 10. Then, the recording paper 2 is attracted on the atracting plate 10 by blowing air from an air blow fan 21 to keep it flat and then recorded by the recording head 23 (or 22). In this case, since the maximum width of the opening 28 of the attracting plate 20 is smaller than the width of the recording paper 2, the tip portion of the recording paper 2 does not enter the opening 28. The recorded paper 2 is discharged through the pathway 26A by discharge and feeding rollers 9A, 9B, 10A, and 10B.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a recording apparatus, and in particular, a conveyance guide is provided in a conveyance path to form a barrier of one dimension smaller than the paper thickness of recording paper, and when the recording paper passes through it during that time, Curling of recording paper, etc. tends to occur.

In a recording device that feeds recording paper stored in a paper cassette and conveys it to a recording means along a conveyance path to perform recording,
In order to reliably transport the recording paper to the recording means, a transport guide is provided in the transport path as appropriate, but if the gap formed by the transport guide is larger than the thickness of the recording paper, the paper may curl. is not removed, the paper collides with the recording means, such as an inkjet head, a jam occurs, or the image quality deteriorates due to the distance between the head and the recording paper not being kept constant. The downside is that you get used to it quickly.

An object of the present invention is to provide a recording apparatus in which the gap between a conveyance path member forming a conveyance path and an elastic conveyance guide is smaller than the paper thickness of recording paper, in order to eliminate such conventional drawbacks. It's about doing.

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

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

Paper cassette) / is the paper output tray! The cassette 1 has an upper lid that also serves as a cassette l, and this upper lid prevents dirt and debris from entering the cassette l. ! is the paper feed roller, and Row 2!
The recording paper λ is pressed against the recording paper while being rotated, thereby feeding the recording paper λ one by one. Timing rollers 4A and 4B are rotated in synchronization with reading by a document reader S (not shown), thereby synchronizing the recording position on the recording paper and the reading position in the reading unit.

7A to 117A and 7B to 10B are conveyor rollers, l/
16 is a conveyance path member forming conveyance paths n, /I, and /q, and the recording paper fed from the cassette)/ is transferred to these rows 27A to /I! 7A, 7B~/θB and conveyance path 1
7 to l de. X is a porous GKM board made of punching metal or the like, I is a fan that blows air in the direction of the arrow, n and n are recording means such as inkjet heads, and the fan 1 attracts the recording paper 2 to the suction plate xK. , the flatness of the recording paper λ is determined by the head 22 . Keep the distance between ff and the writing paper constant. Further, reference numerals 3 and 4 are elastic paper conveyance guides, and a gap smaller than the thickness of the recording paper is provided between the elastic paper conveyance guide and the suction plate X forming the conveyance path.

Further, S is an air blowing guide, which causes the air discharged from the 7-an 1 to rise along the guide, and also blows the air through the opening 1 made at A in the conveyance path at the upper part of the guide as shown by the arrow B.

FIG. 1 is a perspective view of the recording apparatus shown in FIG. 1 seen from the recording head side, and the present invention will be described in further detail with reference to FIG. 2. Here, the recording head 〃 is an inkjet head that performs red recording, and the head n 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), and any one of them is used as desired. Red and black recording can be performed by driving one head or both heads. Also, this recording head n, 23b o-97A~/DA, 7B~/17Bs
Conveyance guides 211, 13, fan 1 and blower guide n
etc. shall be supported by support means (not shown). That is, in the present invention, the suction plate X is fixed. Also,
Of the ventilation holes I drilled in the suction plate, the feeding direction C of the recording paper
The distance between the hole drilled at one end perpendicular to the hole and the hole drilled at the other end is made smaller than the width of the recording paper roll, and when transporting the recording paper roll, The tip corner is hole I
This eliminates the habit of getting stuck in the car and causing flapping sounds, speed fluctuations, or jams. In addition, a plurality of openings 1 of the conveyance path gA formed at the upper part of the air guide plate are opened in the width direction of the recording paper, and the width dimension thereof is made smaller than the width of the recording paper. Make sure that the tip does not enter this opening 1.

FIG. 3 shows details of the intermittent relationship between the suction plate and the conveyance guides 29 and B. In the embodiment of the present invention, the distance 11[d] is made smaller than the thickness t of one sheet of paper.

The operation of the recording apparatus configured as described above will be explained with reference to FIGS. 1 and 2, but it is assumed that only the black head B performs recording. First, when a document reading section (not shown) starts reading a document, the paper feed roller J (Fig. 1) starts rotating, feeds only one sheet of recording paper in the cassette L, and then the timing roller Registered by 6 people and jB. At this time, the blower fan is also driven. here,
Six timing rollers and six timing rollers are synchronized with document reading.
B is rotated, and when the leading edge of the recording paper λ reaches the recording head n, 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, the recording paper λ passes through the conveyance path 17 and n to the recording head #I? : When being conveyed, the recording paper λ is squeezed in the gap between the conveyance guide 2 and the @plate, and curls etc. on the recording paper are removed. In addition, since the maximum width of the opening 1 of the suction plate is smaller than the width of the recording paper, there is no risk that the leading edge of the recording paper will enter the openings 1. Therefore, the recording head n
During recording, the recording paper λ is reliably attracted to the suction plate JK to maintain the desired flatness, and furthermore, the gap between the recording head n and the recording paper is kept constant, improving the quality of recorded images. You can expect it.

The recorded recording paper that has been recorded on recording head n is
Conveyance rollers A, B, conveyance path/9 and conveyance row')
10),,The paper is ejected through IOH・Transport roller/σ
In addition, a ventilation opening 1 is opened in the conveyance path for the three people immediately after 10B, and the wind from the ventilation fan 1 is sent upward, so that even if the recording paper is charged with static electricity, the ventilation guide The recording paper λ is reliably ejected onto the paper ejection tray 3 without the risk of it landing on the conveyance path MAK@.

In addition, since this paper ejection tray 3 is used on the upper surface of the upper Ml 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, thereby making it possible to reduce costs4.

As explained above, according to the present invention, a gap smaller than the thickness of the recording paper is provided by the conveyance guide, and when the recording paper passes through this gap, the curl of the paper is removed. This eliminates the habit of recording paper colliding with the middle recording stage, damaging the middle recording stage, or deteriorating the image quality when a jam occurs. Furthermore, since there is a gap between the conveyance guide and the conveyance path member, the conveyance guide will not wear out prematurely.

[Brief explanation of the drawing]

FIG. 1 is a configuration diagram showing an example of the configuration of the recording apparatus of the present invention, FIG. 2 is a perspective view thereof, and FIG. 3 is a detailed view showing a conveyance guide. l・-Paper cassette, K...recording paper, 3...
Paper output tray, 4L...Top lid! ...Paper feed roller, 4A, 1B...Tinging roller 2,
7A-10k, 7B-10B... Conveyance roller. l/~/4-... Conveyance path member, 17~! 9--Conveyance path, X--Adsorption plate, 2/...Blower fan, 〃, 2J--Recording head, 3. B-Conveyance guide, F--Blower guide, A-Conveyance path, L.
・Opening, d one hole. Patent applicant Canon Co., Ltd.

Claims (1)

[Claims] In a recording apparatus that transports recording paper along a transport path formed by a transport path member and records on the recording paper by a recording means, there is a space between the transport path member and the recording paper that is thicker than 0 paper thickness. A recording device characterized in that it is provided in an elastic conveyance guide 1 that forms a conveyance path tube with a small gap of the size of a rod.