JPS58181660A - Recording method - Google Patents

Abstract

PURPOSE:To obtain an excellent recorded picture, in a recording system utilizing a toner image, by using a doner, wherein an elastic material inner layer, which is softer than a surface layer, is formed in the inside of the surface layer that is formed by a hard conductive elastomer. CONSTITUTION:A uniform toner layer is formed by a toner T from a hopper 2 by the rotation of a doner 10. Positively charged toner distribution is formed by a needle electrode 4, to which a pattern signal is applied. The pattern is transferred to a recording medium S by an intermediate roller 5 and a transfer roller 6. Said doner 10 is constituted by: (1) an inner layer 10B comprising a polyurethane blowing agent having a thickness of 7mm. and rubber hardness of 20HS on the outer surface of a mandrel roller 10A; and (2) a surface layer 10C comprising a hard conductive elastomer having a thickness of 0.5mm., e.g. silicon rubber having volume resistivity of 10<6>+ or -<1>OMEGA.cm, and rubber hardness of 60HS. The layer 10C is coated on the outer surface of the layer 10B. Then, the excellent recording picture, characterized by high recording density, free of irregularity in density, and excellent dot aligning property, is obtained.

Description

[Detailed description of the invention]

The present invention relates to a recording method. Q) A roller-shaped or belt-shaped donor is rotated to move its circumferential surface cyclically in a fixed direction, forming a uniform layer of toner on the donor circumferential surface. Needle electrode? ：Contact and inject charge into the toner according to the putter/signal applied to the four needle electrodes, and check the charge distribution of the toner according to the putter/signal. The toner obtained on the peripheral surface of the donor and arranged in a predetermined manner is transferred onto an intermediate transfer medium in the form of a roller or belt according to its distribution. In this way, the visible image on the intermediate transfer medium is σ・1
．． [A recording method is known in which data is transferred onto a recording medium. FIG. 1 schematically shows only the wall portion of the recording device θ) 1 11 of such a recording method. A dud J is an upper grade.

[This is related to the improvement of the recording method, so first of all,
・Explain the outline of the above-mentioned P-recording system by referring to Figure 1, and also discuss the problems that should be improved. 41] In the figure, 1 is the donor, 2 is the hopper, and 2 is the hopper. 3 is a doctor, numeral 4 is multi-stitch!!. numeral 5 is a) intermediate transfer roller as the private photographic medium of A and A. E1 No. 6 is a ζ/r copying roller, numeral 7 is a blade, and numeral 8 is a toner collection. It shows the parts carefully.Also,
No. 44 E1, E2. The E3i DC voltage power supply, symbol S, is on the recording medium S. The toner 1 is in the form of a roller and has a rolling shaft 2.
It can be arranged parallel to the direction intersecting 1ff+ in FIG. The popper 2 has an opening for toner replenishment. Hopper 2 (12 tubes 20 and roller 2 for preventing toner leakage)
1 and 0) σ for IJ-ning the roller 21
) Brush 22 and Kaoru; The toner T+ stored in the main body 20 is supplied to the upper plate surface of the donor l from the upper LL opening tray. The opening is in the form of a slit whose longitudinal direction is perpendicular to FIG.
To θ) The toner auxiliary axis does not apply 1 axis force when writing the toner 10 times.Then, the stirring brush 23 is installed in the small brim 2. 7A: ra, toner] is ゛k (actually disciplined. 77') The eye (4th night, so σ) edge is placed on the track I board, and the ICII is moved around the donor l by the presser 1fi31.
, QI+ are connected to FE in the axial direction, and electrically connected to the power source EIK. The multi-needle ridge 4 has an elongated plate shape in the direction orthogonal to the drawing, and on the side end surface of the bath 5 in the longitudinal direction, minute end surfaces of a plurality of embedded needle electrodes are arranged along the length I. There was obvious itching in the direction of the force, and the left side surface of the donor surface was irritated in the longitudinal direction. The intermediate transfer roller 5 is located below the donor 1.
The upper curved surface is brought into contact with the lower curved surface of the donor I once and in one direction. The transfer roller 6 is parallel to the intermediate transfer roller 5 and runs in parallel with the VCC to the southwest, and works in conjunction with the back-to-back transfer roller 5 to grip and convey the recording medium s2 in the direction of the arrow. E2, transfer loan-6
I am trying to connect to the power supply E3. As the recording medium S, plain paper is generally used. The plate 7 has its edge portion pressed against the left peripheral surface of the intermediate transfer roller 5 in the direction of its generatrix, and the toner collection member 8 is disposed below the blade 7σ).
]ing. Toner T has a volume resistivity of 10~]014Ω・C
mσ) is used. When recording, move 1iJl ml' towards the donor l or in the direction of the arrow.
f 6°, the toner T replenished from the hopper 2 is formed into a uniform toner layer on the donor l by the action of the doctor 3. When the toner T or the toner is formed into a layer by the action of the doctor 30, the doctor 3 injects a negative charge into the toner (Q) or θ). Toner σ formed on the circumferential surface of toner 1 as shown above
Ao is negatively charged to F-1. As shown in this a), except for the uniformly negative biased toner layer passing through the 1Ω of the multi-needle electric shuttle 4, there is no putter/signal in the multi-needle electric shuttle 4, and it is disastrous! , press the signal and press n. From the needle driven by this putter/signal,
First, a positive charge is injected into the toner that comes into contact with the stiffness. Positive charge? Is the injected toner an annoyance to Masatoshi Mourning? Change. Therefore, when the multi-needle electrode 4 is used,
The distribution of positively charged toner corresponds to the pattern/signal. σ) The positively charged toner is transferred onto the circular surface of the intermediate transfer roller 5 according to its distribution by electricity generated by the power source E2, and then a negative voltage is applied to the transfer roller 6 by the electric current generated by the power source E3. Transferred onto recording medium S from Yofukan Onnato &C. In this way, a medium-sized image is obtained on the recording medium S according to the butter applied to the multi-needle electrode 4. 6. The medium S is discharged from the vortex after being spread through a constant N by a visible image (σ) and Q) a fixed-layer tablet (not shown). Intermediate transfer roller 5σ] - The toner transferred onto the circumferential surface and stuck to the intermediate transfer roller 5σ is scraped off by grade 7 to the toner recovery roller. Donor] Ha! -J M- As the τ becomes glossy, more and more layers are formed and used for the portrait, but
The first layer of toner that has contributed to the image recording process goes to the toner replenishment section and is scraped and scraped from the circumferential surface of donor 1 by the brush 23, so that fresh toner is always kept on the circumferential surface of donor 1. ``A single layer of toner is formed. Now, the speed of the surface of the donor 1 and the speed of the peripheral surface of the Nakaura transfer roller 5 are not the same but different.

It is [Tamo θ]. That is, for example, the intermediate transfer roller σ)
The speed of the situation is 1 and the first is the donor 1 (between /1) and θ
] The speed is fl:eha, ], 5. In this case, in the superimposed distribution of toner formed on the donor 1 by a multi-needle electrode. The positive charge distribution is a record that should be finally recorded! 1.5 to the direction of the hardening force of the donor 1.
When the circumferential speed of the roller 5 is increased by 1811, the circumferential speed of the giving roller 5 is Transfer of color from the beginning to the intermediate transfer roller 6 (θ)
In addition, if the intermediate 1' and the roller 6 are read θ], the movement should be 1ip4.
It is then wiped and reduced to 2/3. Therefore, the recorded image on the recording medium S1V has a regular 0) size, and in this way, the circumferential speed of the donor 1 and the intermediate transfer roller 5 changes. By doing so, the record @ surface obtained is; ? In the above recording system (h), problems that should be improved are as follows.
The direction corresponding to the V [needle electrode σ that falls on the 1 pole 4) arrangement ++ direction is called the direction of movement of the donor 1, and the direction corresponding to the direction of movement of the donor 1 is called the direction of movement of the donor 1. Let's call it direction. This θ) type of recording method can be used to obtain a recorded image. Naturally, it is required that the image be a dot image in both the scanning direction and the sub-scanning direction. Record obtained from the simulation i1. ! In image II, the degree of dot alignment is generally compared to the dot alignment in the king run. m+I ;@The undistorted column is inferior in the forward direction. The purpose of the present invention is this 5-? Improved. The edict method σ] is provided. Below, the unexploited sound will be explained. It was found that the cause of the sub-scanning direction being inferior to the main-scanning direction during dot alignment during the dot alignment was found to be due to the donor σ). That is, conventionally, as a donor, a cored metal roller formed with a single layer of elastomer has not been used. In this Q) donor, the Φ # electric elastomer σ) layer is conventionally Q) recording &, in the J:
l - Relatively narrow track, medium F' nip width with FrU transfer medium - sufficiently large. koσ）tanu,
In the case of the earth snoring, the non-elastomer was stretched further in the donor, resulting in a decrease in the degree of dot alignment in the knead, = + direction, and the dot alignment (σ). , σ) In order to prevent such a decrease in the degree of dot alignment, conductivity in the donor - elastomer I・~θ]
I thought it was possible to increase the hardness or make it movable, f+',+
If we set it to 5 like this, the degree of dot alignment will be the same as above in the 1111J scanning direction. (Along with C, density unevenness may occur in one skeleton image.)
Between the ribs! , -: Can be done. This unevenness in production is due to the increased hardness of the elastomer (1)
This is due to uneven transfer due to a decrease in the nip width at the wide contact area with the q track body. So, what is the above nip width? In order to increase the contact force between the toner and the intermediate transfer medium, it is said that the recorded image suffers from a decrease in image density and a smudged background.The cause of this is the pressure contact force θ ) J5v Koyoro, Tona's bulk density has increased even further. If the bulkiness of the toner layer increases, the volume resistivity value of the toner layer decreases. 1-When the transfer voltage σ]Toner 111iI is glued through h-Produced by kneading=
A decrease in mound concentration occurs. Z, quiet! This is due to the induced toner transfer from the donor, which results in staining. Therefore, in the present invention, improvements have been made to the structure of the toner; by warping, it is possible to improve the sub-scanning without causing the above-mentioned image 1 curvature unevenness, decrease in I[kl image density, and background smudging. Degree of dot alignment in direction? Improved. In other words, the donor surface used in the loading method is hard σ
) Cut width is formed of elastomer, and inside this surface, an inner layer made of a softer elastic material than surface 1 is formed. It is contradictory because it was formed. If you want to be a warrior, what used to be a single layer of conductive elastomer is changed to 2/1 layer, and the 1 side is hard and inside? Softened translation). Such donors are
It is soft in the layer thickness direction and hard in the sub-travel direction. Therefore, middle IF
j j k given medium and σ) ball grade part - C ゛ can make a sufficient nip width with a small If deer, and moreover, there is less σ crease in the four parts of the garment. By using toner, l [! If the II stability is high enough, it will be possible to obtain one image in the recording direction right away in the dot column. II! I! The conductive injection molding 2-stomer is defined as having a rubber hardness of f: 3(2) to 90 H8, and a volume resistivity of 108 Ω° or less. Therefore, internal H
7o) Bullet 1. Note: You can also write the following. The following is a pilgrimage based on the ψ that is related to it.
] This donor]0 was shaped by forming a cored roller 10A (h with an inner layer 10B on the outer circumferential surface, and coating the outer circumferential surface of this inner layer 10B with a coating iMI 10C. Diameter of the donor 10 is 30mm, what is the thickness of the inner layer 10B?+
lIi, the thickness of the surface layer 10c is o, smm. Inside'
tsl: 1% 10B is Boliureta 7 foam material with com hardness 20 H8?・Iη was formed. In addition, the surface layer 10
c is volume-specific Jk resistance]06 soil'Ω・α, rubber hardness 1i6
The donor 1O was placed in a device as shown in Figure 1.
When I performed the recording process using it instead, I found the top record L [! I got 11 statues. The nip width at the EE contact between the donor 10 and the intermediate transfer roller 5 was 1 (+Qg/cm 2 , both σ), and the nip width was 2. The donor 10' shown in Figure 3 was prototyped by the Ministry of Invention, and other donors are shown. The inner layer 10B' formed on the core roller] OA' is made of silicone rubber with rubber <7 ti 2 (I H8) and is formed with a diameter of 14 x 0.5 mm.The donor diameter is 3
There is 0 fight-C. Place this donor 10' into a spear as shown in Figure 1.
Instead of using recording process? It was executed, and the IW was strong on both sides, there was no magnetic unevenness, both the main and sub-scanning directions had good dot alignment, and a high-quality recording direction (one house was able to do it. Intermediate transfer roller 5 and The pressure force applied to the connecting part of is 1
00 g/an, and the nip width was 2 mm. In the above explanation, both the donor and the transfer medium have a roller texture of 0. Of course, the above principle can also be applied to the case where it is in the form of a belt.

[Brief explanation of the drawing]

Fig. 1 is a diagram for determining the length of the donor according to a non-explosion example (I), and Figs. Figures 1.2 and 3 are cross-sectional end views showing other examples of donors used in the actual implementation of the present invention. J...donor, double hopper, 3...doctor, 4
...Multi-needle Kt+, 5...Intermediate transfer roller as intermediate transfer medium, 6...Transfer roller, S...Recording medium. 10, 10'=donor, IOA, 10A'-
・Inner layer, H)C. HIC'・・・Clothing layer

Claims (1)

[Claims] By rotating a roller-shaped or belt-shaped donor,
That week II]'i? While moving cyclically in a fixed direction, a uniform layer of toner is formed on the upper 6 self-circumference M, and the upper needle 1 layer is covered with multiple needles at a fixed position. Apply pressure to the multi-needle conductor, apply a pattern to the toner, inject an electric current to the toner, apply the pattern to the toner, and apply the pattern to the toner.
' K %T forms a toner resting distribution, and according to the distribution, a predetermined 821 'Jvc fluorescent toner layer is formed.
The image is transferred onto an intermediate transfer medium in the form of a roller or a belt, and thus the image is transferred onto the intermediate transfer medium.
In the recording method of transferring onto a medium, the surface layer σ, the formation of a lump in the hard folded human elastomer, and the surface layer σ
] On the inside, there is a total of 1 recording layer, with internal arrogance created by a softer negative σ node IL layer material than the p interlayer.