JPS61277249A - Image recording device - Google Patents

Abstract

PURPOSE:To shorten the recording time by providing the first image recording means which records a pertinent read picture on the lower face of a recording paper and the second image recording means of the electrostatic photographic copying system which records the picture on the lower face of an original on the upper face of the recording paper by transfer. CONSTITUTION:When an original (b) is supplied onto a contact glass 10, the picture on the upper face of the original (b) is recorded on the lower face of a recording paper (a), and the picture on the lower face of the original (b) is transferred and recorded on the upper face of the recording paper (a) by electrostatic photographic copying. While the original (a) and the recording paper (a) pass a series of transportation paths, pictures on both faces of the original (b) whose both faces pictures are formed on are recorded automatically on both faces of the recording paper (a). In the double face recording mode, the transfer recording speed of the second image recording means B is synchronized with the recording speed of a recording means A; and in the single face recording mode, the recording function of the first image recording means A is stopped and not only the quantity of light is increased but also the transfer recording speed of the second image recording means B is raised to record the picture on the single face in a high speed. Thus, the recording time is shortened and damage of originals and paper jam are suppressed.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an improvement in an image recording device capable of automatically recording images on both sides of a document with images formed on both sides on both sides of recording paper. It is.

[Conventional technology]

As an image recording device that automatically records images on both sides of a document on both sides of a recording paper, for example, a mechanism is provided for reversing the front and back of the document in the middle of the path from when the document is fed onto the contact glass until it is taken out onto the tray. A mechanism is installed to turn the recording paper over before it is taken out to the paper output tray after single-sided recording is completed, so that the image on one side of the document fed onto the contact glass is transferred to the recording paper. There is a system in which the image is recorded on the top side, and then both the original and the recording paper are turned over, and the image of the other side of the document is recorded on the top side of the recording paper, which is originally the back side.

[Problem that the invention seeks to solve]

However, in the above-mentioned image recording apparatus, because the original and the recording paper are each reversed each time,
It takes a long time to record, and the path for turning the paper inside out becomes complicated, which increases the likelihood of paper jams.
The document is easily damaged, and the mechanism for reversing the front and back of the document increases the cost and the overall size of the device increases.

[Means for solving problems]

It is an object of the present invention to solve all of the above-mentioned drawbacks by extremely simple and rational improvements, and to achieve the object, an image recording apparatus according to the present invention includes an image reading means for reading an image on the upper surface of a document. and a recording means for recording the read image on the bottom side of the recording paper; and a first image recording unit that records the read image on the bottom side of the recording paper; It is characterized in that it is provided with a second image recording means of an electrostatic copying type that performs transfer recording.

〔Example〕

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows an outline of an image recording device that can record an image of a document on both sides of recording paper a, and reads an image of the top surface of the document. Image reading means A+ and the read image are transferred to recording paper a
The first image recording means A consists of a recording means ^2 that records on the lower surface side, and the image on the lower surface of the document sheet, which is latent imaged on the surface of the photoreceptor, is visualized with a developer and transferred and recorded on the upper surface side of the recording paper a. and a second image recording means B of electrophotographic copying type.

Specifically, a document presser 2 equipped with an automatic document feeder 1 is provided to be able to swing open and close with respect to the apparatus main body 3, and the image reading means A1 is built in the document receiving side portion of the document presser 2, and The recording means At is arranged near the paper feeding section of the recording paper storage cassette 4 loaded in the apparatus main body 3, and the second image recording means B equipped with the exposure device 5 having a movable optical system is installed in the apparatus main body 3. ．． It is built in.

The image reading means AI includes a light source 6, a focusing photoconductor 7, and an image pickup device 8 built into a case 9, and captures an image of the top surface of an original document supplied onto a contact glass 10 as the original document moves. It is designed to be read along with the text.

The recording means A2 has a platen 11 at the upper part and a print head 12 at the lower part across the feeding path of the recording paper a, and also prints the ink sheet 15 wound around a pair of rollers 13 and 14. It is provided so as to bypass the top of the recording paper 12, and based on the input of the read image read by the image sensor 8 and converted into an electric signal, the read image is recorded on the lower surface side of the recording paper a. There is.

The second image recording means B stores an original document fed to a predetermined position on the contact glass 10 by the automatic document feeder l, b
A lower surface image is formed as a latent image on the surface of the photoreceptor 1G by the exposure device 5 having a movable optical system, and the latent image is visualized with a developer in the developing section 17, and the transfer section 18
At this time, the image is transferred and recorded on the recording paper a, and the separation charger 19 transfers the image from the surface of the photoreceptor 16 to the recording paper a.
After the two-sided recording is completed, the recording paper a is sent out to the tray 22 via the paper ejection belt 20 and the pair of fixing rollers 21.

Incidentally, at the same time as the recording paper a is fed to the tray 22, the original document is also taken out to the document receiver 23 or 24.

To summarize, when the document sheet is fed onto the contact glass 10, the upper surface image of the document sheet is recorded on the lower surface side of the recording paper a.
Next, the image on the bottom of the document sheet is transferred and recorded on the top surface of the recording paper a by electrophotographic copying, and while the document sheet and the recording paper a take a series of simple transport paths, images are formed on both sides. Images on both sides of the original document can be automatically recorded on both sides of recording paper a.

Since there is no need to turn over the original sheet and the recording paper a as in the past, the recording time can be shortened and the original sheet is less likely to be scratched or jammed.

Note that when the double-sided recording mode is selected, the speed of transfer recording by the second image recording means B is synchronized with the recording speed by the recording means A2, but when the single-sided recording mode is selected. Sometimes, in conjunction with this operation, the recording function of the first image recording means A is stopped and the transfer recording speed of the second image recording means B is increased, including an increase in the amount of light, so that single-sided recording is possible. This allows it to be done at high speed.

[Another example]

FIG. 2 shows an image recording device according to another embodiment, which has the following features:
The exposure device 5 of the second image recording means B is constructed as follows.

That is, using the exposure device 5 as a fixed type optical system consisting of a light source 25 and a focusing photoconductor 26, during the reading and recording of an image by the first image recording means A,
Alternatively, while the original lI&b whose image has been read and recorded is taken out to the original receiver 23 or 24, the lower surface image of the original is directly latent imaged on the photoreceptor 16, making the entire apparatus more compact. It is characterized by what it can do. In FIG. 2, the same components as those shown in FIG. 1 are given the same reference numerals and their explanations are omitted.

In the first image recording means A, in the embodiment, the image on the upper surface of the original is read and recorded while moving the original. The image recording means A2 may be of any type such as a thermal transfer type, an inkjet type, or a wire tod type.

〔Effect of the invention〕

As explained above, the image recording device of the present invention reads and records the top and bottom images of a document separately, and takes a longer recording time than the conventional device in which the document and recording paper are reversed. In addition to being able to shorten the time, damage to the original and paper jams can be suppressed.Furthermore, by eliminating the front-back reversing mechanism, the device can be made more compact and costs can be reduced.

[Brief explanation of the drawing]

The drawings relate to the present invention; FIG. 1 is a schematic overall vertical cross-sectional view of an image recording apparatus, and FIG. 2 is a schematic vertical cross-sectional view of an image recording apparatus according to another embodiment. 16... Photoreceptor, A1... Image reading means, A2...
Image recording means, A: first image recording means, B: second image recording means, a: recording paper, b: manuscript.

Claims (2)

[Claims] (1) A first image recording means consisting of an image reading means for reading an image on the upper surface of a document, a recording means for recording the read image on the lower surface side of a recording sheet, and a first image recording means for reading an image on the lower surface of the document as a latent image on the surface of a photoconductor; An image recording apparatus comprising a second image recording means of an electrostatic copying type that visualizes with a developer and transfers and records it on the upper surface side of a recording paper. (2) The image recording apparatus according to claim (1), wherein the transfer recording speed of the second image recording means can be freely changed and set.