JPH0216361Y2 - - Google Patents

Description

[Detailed explanation of the idea] The present invention relates to an electronic copying machine.

Conventionally, the structure consists of a first structure and a second structure that are separable across the paper conveyance path of the transfer paper, and is provided near the extension line of the paper conveyance path near the drum-shaped photoreceptor. The first structure and the second structure are rotatable about a rotational fulcrum, and the second structure is rotated and separated from the first structure, thereby forming a drum-shaped photosensitive member. 2. Description of the Related Art Electronic copying machines are known in which a paper transport path facing the body can be opened.

However, this electronic copying machine has a first structure and a second structure.
The opening angle of the structure is large, which complicates the structure of the drive means and the electrical wiring, and it is difficult to remove paper that is jammed or jammed in the paper conveyance path if it is located far from the operator. There is a drawback.

An object of the present invention is to provide an electronic copying machine that can eliminate the above-mentioned drawbacks.

The present invention is characterized by a first structure having a transport path set in a transport position in which one side of the transfer paper or photosensitive paper is brought to the reference position side corresponding to the operator side; a rotatable second structure located above the transport path in the body, with the reference position side serving as a free end during rotation, and exposing the transport path by separating the free end from the first structure; The second structure is provided with a body, and the second structure can be rotated from the first structure to open the conveyance path on the first structure.

The present invention will be explained in detail below based on the illustrated embodiments.

In FIG. 1, reference numeral A indicates the first structure. A second structure B is arranged on top of the first structure A so as to be separable therefrom.

A part of the second structure B is formed into a drum-shaped photoreceptor 1.
The photoreceptor 1 is rotated in the direction of arrow a by a driving means (not shown). Around the photoreceptor 1, a charging device 2, an exposure device 3, a developing device 4, a transfer paper supply device 5, a transfer device 6, a transfer paper separation device 7, a fixing device 8, a cleaning device 9,
A static eliminator 10 and the like are also arranged. A paper ejection device 11 is provided on the transfer paper ejection side of the fixing device 8.
A transfer paper front-back reversing device 12 is also provided.

The transfer paper supply device 5 has a plurality of transfer paper cassettes 52 containing transfer papers 51 of different sizes.
, a paper feed roller 53 that feeds the transfer paper 51 from these separately, a transport roller 54 that transports the transfer paper 51 from these paper feed rollers 53, and a transport roller 54 that is disposed near the photoreceptor 1 and that transports the transfer paper 51. The transfer paper 51 conveyed from the roller 54 is temporarily put on standby, and transferred in synchronization with the toner image on the photoreceptor 1.
1 between the photoreceptor 1 and the transfer device 6, and a guide plate 56 that guides the transfer paper 51.

As the photoreceptor 1 rotates, the photoreceptor 1 is charged by the charging device 2, and the exposure device 3 irradiates the image light of the document onto the photoreceptor 1 to form an electrostatic latent image. A developing device 4 applies charged toner to visualize the electrostatic latent image, and a transfer device 6 transfers the toner image on the photoreceptor 1 onto a transfer paper 51 fed by a transfer paper supply device 5, thereby forming a toner image. Transfer paper 51 on which
is separated from the photoconductor 1 by a transfer paper separation device 7 and sent to a fixing device 8. After the toner image is transferred, residual toner remaining on the photoconductor 1 is removed by a cleaning device 9, and then the photoconductor 1 is destaticized. The process of eliminating static electricity in the device 10 is performed repeatedly in sequence.

The transfer paper on which the toner image has been fixed by the fixing device 8 is discharged to a paper discharge tray 11a by a paper discharge device 11, or is discharged to a paper discharge tray 11a by a paper discharge device 11, or by a transfer paper front-back reversing device 12.
The paper is turned over and sent to the uppermost transfer paper cassette 52.

The paper ejecting device 11 includes a plurality of conveyance rollers and guide rollers. The transfer paper front-back reversing device 12 is composed of a plurality of conveyance rollers and a guide plate, and once transports the transfer paper sent from the fixing device 8 upward, and then transports it downward to reverse the transfer paper. Transfer paper cassette 52 in the uppermost position
send to

The first structure A includes a developing device 4, a transfer paper supply device 5, a transfer device 6, a transfer paper separation device 7, a fixing device 8, a paper discharge device 11, a transfer paper reversing device 12, and an exterior plate that holds these. It is composed of A1.

The second structure B includes a photoreceptor 1, a charging device 2,
Exposure device 3, cleaning device 9, static eliminator 10
and an exterior plate B1 that holds them.

The transfer paper 51 is conveyed while being shifted toward the reference side with one side of the paper conveyance path located on the operator's side as a reference. As shown in FIG. 2, the first structure A and the second structure B are rotatable about a rotation fulcrum b provided on the side opposite to the reference side of the paper conveyance path. For example, as shown in FIG. 3, a supporting piece 13 is fixed to the upper end of the first structure A, holes 15 are provided at the lower end of the holding piece 14 of the second structure B, and holes 15 are provided in the lower end of the holding piece 14 of the second structure B. By fitting the support piece 13, the support piece 13 is placed at the rotational fulcrum b with respect to the first structure A.
The structure is such that the second structure B can be rotated as shown in FIG. By rotating the second structure B relative to the first structure A and separating the second structure B by a predetermined distance, the second structure is formed relative to the first structure A at a position approximately indicated by the two-dot chain line c in FIG. The body B is separated to open the paper conveyance path near the photoreceptor 1.

If the transfer paper becomes jammed or jammed in the vicinity of the paper conveyance path near the photoreceptor 1, the second structure B can be rotated and separated from the first structure A to separate the transfer paper from the paper conveyance path. can be opened to remove jammed or jammed transfer paper from the electronic copier. In this case, the reference side of the paper conveyance path on which the transfer paper is gathered is located on the operator's side, and the second structure B is rotated and opened with respect to the first structure A from the reference side of the paper conveyance path. Therefore, part of the transfer paper that is jammed or jammed in the paper conveyance path will always be located near the reference side, which is the operator, so if it is rotated, a part of the transfer paper will inevitably be moved. An exposed state is obtained, which eliminates the need for the operator to hunt for the paper.

Further, the opening angle between the first structure A and the second structure B may be small, and the transfer paper can be easily removed.

Note that the first structure A may include the upper part of the developing device 4 or the transfer sheet reversing device 12.

Furthermore, the first structure A may include other devices located at the boundary of the paper transport path, such as a paper feed roller, a transport roller, and a portion of a fixing device.

This invention charges the photosensitive paper while transporting it, forms an electrostatic latent image by irradiating the photosensitive paper with image light of the original using an exposure device, and then uses a developing device to transfer the electrostatic latent image onto the photoreceptor. It is also applied to electronic copying machines that apply toner and visualize it, and then fix the toner image on photosensitive paper with a fixing device.

In the electronic copying machine of the present invention, the opening angle of the first structure and the second structure may be small, which simplifies the structure of the driving means and the electrical wiring, and
Since paper that is jammed or jammed in the paper conveyance path is located close to the operator, it is easy to remove the paper.

Further, in the electronic copying machine of the present invention, maintenance of the conveyance roller, conveyance belt, transfer device, etc. is easy, and the opening angle of the first structure and the second structure may be small. There is little impact on devices such as automatic document feeders and document ejection devices.

[Brief explanation of the drawing]

Fig. 1 is a partially cutaway front view schematically showing the electronic copying machine of the present invention, Fig. 2 is a right side view showing the same electronic copying machine, and Fig. 3 is an exploded view of the main parts of the above electronic copying machine. FIG. A...First structure, B...Second structure, 1...Photoreceptor, 2...Charging device, 3...Exposure device, 4...Developing device, 5...Transfer paper supply device, 6...Transfer device, 7...Transfer paper Separation device, 8... Fixing device, 9... Cleaning device, 10... Static eliminator, 11... Paper discharge device, 12...
Transfer paper flipping device.

Claims (1)

[Scope of utility model registration request] A first conveying paper or photosensitive paper, which is separable across the paper conveyance path and which has a transfer device, conveys the transfer paper or photosensitive paper while moving it toward the reference side with one side of the paper conveyance path as a reference;
a second structure having a photoreceptor, a charging device, an exposure device, and a cleaning station, and the two structures are connected by a pivot shaft on the side opposite to the reference side of the paper conveyance path. An electronic copying machine characterized in that a paper conveyance path is opened by relatively rotating the first structure and the second structure and separating them about the rotation support shaft.