JPS6052878A - Electrostatic recorder - Google Patents

Abstract

PURPOSE:To prevent the wrong exchange of a developing unit contg. a developer of a different color by the constitution in which the mounting of the developing unit united with a developing device and a developer replensher and the identification of the kind thereof are checked when said unit is mounted. CONSTITUTION:A developing unit 2 is constituted exchangeably of a developing sleeve, a developing device part and a developer replenisher part which are united to one body. Projections 2f, 2f', etc. for identification are provided in the position where said projections engage with photocouplers 7, 7', etc. while the unit 2 is held mounted to the body of a recorder. Said projections together with a switch 8 provided to the body of the recorder operated by the unit 2 apply the information on the identification of the unit 2 to the central processing unit CPU of the recorder. More specifically, the switch 8 applies the information on whether the unit 2 is mounted or not to the CPU and the projections 2f, 2f', etc. apply in the information on whether there are the respective projections or not via phototransistors 7a, 7a' of the photocouplers 7, 7', etc. to the CPU and therefore the presence or absence of the two projections 2f, 2f' apply eventually the information on identification of four kinds of the developing units.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to improvements in electrostatic recording devices such as electrophotographic copying machines, and in particular, to improvements in electrostatic recording devices such as electrophotographic copying machines, and in particular, to improvements in electrostatic recording devices such as electrophotographic copying machines, and in particular to improvements in electrostatic recording devices such as electrophotographic copying machines. The present invention relates to an improvement in an electrostatic recording device which forms a developing unit and is replaceably mounted.

[Prior art]

An electrostatic recording device forms an electrostatic latent image on the surface of an image carrier having a surface layer such as a photoconductive photoreceptor or dielectric, and supplies a developer to the surface of the image carrier using a developing device to form the electrostatic latent image. The developed image is developed and recorded by transferring and fixing the developed image directly onto the surface of the image carrier or onto recording paper, etc. The developing device is equipped with a developer replenisher to replenish the developer that is consumed during development. will be asked to attend. In many conventional electrostatic recording devices, the developer can be detachably attached to the main body of the recording device so that maintenance and inspection can be easily performed. I can see the group. However, in such an electrostatic recording device, there is a problem in that when the developer is removed from the developer, the developer may spill from the connection part with the developer replenisher, causing stains in the drum. Therefore,
A recording device in which a so-called -component developer, which is mainly composed of magnetic toner and does not contain a carrier, is used in the developing device, and the developing device and the developer replenisher are integrated into an integrated developing unit, and the developing unit is removably attached. 2. Description of the Related Art Electrostatic recording devices that can be attached to a main body are known.

On the other hand, recently there has been a demand for electrostatic recording devices that can produce recorded images of various colors.

The best way to do this is to use an electrostatic recording device with replaceable developing units, as described above, which uses developers of different colors in each developing unit and allows you to easily obtain recorded images of different colors by replacing the developing units. It's appropriate.

However, an IwI electrorecording apparatus capable of obtaining recorded images of different colors is preferably one using a two-component developer rather than one using a -component developer. In the case of a -component developer, the toner particles must contain a black or brown magnetic material, which makes it difficult to obtain recorded images with clear colors, whereas in the case of a two-component developer, This is because the magnetic material is contained in the carrier particles and there is no need to contain the magnetic material in the toner particles, so it is easy to obtain recorded images with clear colors. Of course, if you ignore the sharpness, it is possible to obtain recorded images of different colors even if a -component developer is used.

[Purpose of the invention]

The present invention provides an electrostatic recording device ff in which developing units are replaceable and recording images of different colors can be obtained as described above, in which there is no error in determining which developing unit is installed, or whether the developing unit is installed or not. The present invention provides an electrostatic recording device in which development is performed under appropriate development conditions for the developer used in the development unit.

[Structure of the invention]

In the present invention, a developing device that supplies developer to the surface of an r-parallel carrier to develop an electrostatic latent image and a developer replenisher that supplies developer to the developing device form an integrated developing unit that is replaceable. The present invention provides an electrostatic recording device that is attached to a computer and is characterized in that the attached developing unit is identified, and with this configuration, the above object is achieved.

〔Example〕

Hereinafter, the present invention will be explained in detail based on illustrated examples.

1 and 2 are a schematic sectional view and a partial perspective view showing an example of the #electronic recording device according to the present invention, and FIGS. 3 and 4 are a partial perspective view and a partial perspective view of the developing unit shown in FIG. 1. 5 is a block circuit diagram showing an example of the developing unit identification circuit, FIG. 6 is a partial sectional view showing another example of the electrostatic recording device according to the present invention, and FIG. 7 is a partial front view of the installed part. It is a partial perspective view of a panel part.

M in Figure 1! Electronic Recording-11ff can be used with the document table 1, which reciprocates left and right at the top, moved to the left.
A basket photocopy that allows you to attach and detach the image unit 2.
: 3, M optical drum, 4 paper feed cassette, 5
is a fixing device d unit, in which recording paper is fed from the right and sent out to the left.

The developing unit 2 includes a developing sleeve 2a having a magnet therein, a developing device section 2' provided with two agitating rotors 2b and 2c below, and a developing device section 2' provided with a developing sleeve 2a having a magnetic body therein, and a developing device section 2' provided with a developing device section 2' below. It is constructed integrally with a developer replenisher portion 2N provided with a four-ra 2d, and is shown in FIGS. 3 and 4.
As shown in the figure, a door member 2e that covers the opening where the developing sleeve 2a faces the photosensitive drum 3 when taken out from the recording apparatus main body, identification protrusions 2f, 2f', etc. that provide identification information of the developing unit 2, etc. It is also equipped with

When the developing unit 2 is removed from the main body of the recording apparatus, the door member 2e of the developing unit 2 has a spring 2g as shown in FIG.
When the developing unit 2 is rotated counterclockwise by the biasing force to cover the opening, and the developing unit 2 is inserted into the main body of the recording apparatus as shown in Fig. 1, the spring 2g is applied as shown in Fig. 4. When the driven bottle 2h hits the operating protrusion 6 provided on the main body of the recording device, it resists the bias of the spring 2g.
[The opening position is rotated in the direction shown in FIG. By providing such a door member 2e, in the electrostatic recording device of the illustrated example, even if the developing unit 2 is frequently replaced to change the color of the recorded image, the developer is less likely to spill out during replacement. Also, the developing unit 2
This has the effect that the developing sleeve 21 is prevented from being scratched. However, the invention is not limited to this example.

] The identification protrusions 2f, 2f', etc. of the dust ψ unit 2 are attached to the recording apparatus 1 with the developing unit 2 installed in the main body of the recording apparatus a as shown in FIGS. 1 and 4. A switch 8 is provided on the main body of the recording device a, which is provided at a position 11 to engage with a saw photocoupler 7, 7', etc., and which is operated by the current 1m unit 2. The a information is given to the central processing unit 17CPH of the recording device a as shown in FIG. That is, the switch 8 sends information @1 as to whether or not the developing unit 2 is attached to the CPT.
J, and the identification protrusions 2f, 2f', etc. give 11f information as to whether each protrusion is present or absent to the CPU via the phototransistors 7a, 7'a of the photocoupler 7°7', etc., so the two identification protrusions 2f, 2f', etc. The presence or absence of the identification protrusion provides identification information for the four types of developing units. Of course, developing unit 2
The attachment information of the developing unit 2 may be provided by a photo coupler, or the identification information of the developing unit 2 may be provided by a switch.

The CPU, which has been input with the installation information and identification information of the developing unit 2, turns on one of the 20 types of developing unit display lamps 9 shown in FIG. 2, and starts the copying operation when the start button 10 is pressed. is started.

Depending on the type of developer used in the developing unit 2, developing conditions such as the illuminance of the exposure lamp 11 shown in FIG. When it is necessary to change the development conditions, the CPU causes those drive circuits 13 to set appropriate developing conditions. By lighting the type indicator lamp 9 and driving the drive circuit 13 in this manner, it is possible to prevent ηI from installing the developing unit 2 of the wrong color or from developing the developer under inappropriate developing conditions. Furthermore, the electrostatic recording apparatus of the present invention may be one in which only the type of developing unit 2 is displayed, or one in which only the appropriate setting of developing conditions is performed.

The electrostatic recording wave fft shown in FIG. The present invention can also be applied to. That is, in such an electrostatic recording device, for example, as shown in FIG.
Each of the start buttons 10a to 10d, which are provided in parallel as many as the number of types of developing units 2, has an individual type display lamp 9a to 9d built-in, so that the developing units 2
The type indicator lamp 9 lights up when the is installed.
By pressing any one of the start buttons 10a to 1od having built-in start buttons 10a to 9d, development can be performed by that developing unit 2. Even in such an electrostatic recording device, if the development conditions are set by pressing the start button, it is possible to not only display the type but also to set the appropriate development conditions according to the type of developer. Development can also be carried out by The developing unit 2 shown in FIG. 6 also includes a door member 2e (i7), and this door member 2e is also shown in FIG.

It is opened and closed when the developing unit 2 is attached or detached by a mechanism similar to that shown in FIG.

〔Effect of the invention〕

According to the electrostatic recording device d of the present invention, as described above, recording images of different colors can be obtained without error by replacing and installing the developing unit, and furthermore, clear recorded images can be obtained for each color. The excellent effects that can be obtained can be obtained.

[Brief explanation of drawings]

1 and 2 are a schematic sectional view and a partial perspective view showing an example of the electrostatic recording device a according to the present invention, and FIGS. 3 and 4 are a partial perspective view and a partial perspective view of the developing unit shown in FIG. 1. 5 is a block circuit diagram showing an example of the developing unit identification circuit, FIG. 6 is a partial sectional view showing another example of the electrostatic recording device according to the present invention, and FIG. is a partial perspective view of the panel section. 1... Document placement table, 2... Development unit, 2'.
...Developer part, 2N...Developer replenisher part, 2a
... Current image sleeve, 2b, 2c... Stirring rotor,
2d... Toner sending roller, 2e00. Door member, 2f, 2f' - identification protrusion, 2g spring, 2h driven bin, 3 photosensitive drum, 4 paper feed cassette, 5 fixing device unit, 6... Operating projection, 7.7' mountain photocoupler, 7a, 7'a... Phototransistor, 8... Switch, 9.9a, 9b, 'lc, 9d-... Type display lamp,
10, 10a, 10b, 10c, 10d
-x start button, 11...exposure lamp, 12...
Corona discharge device, 13... drive circuit. Patent applicant Konishiroku Photo Industry Co., Ltd. Figure 1 Figure 2 Figure 3 Figure 4 Figure 5 Figure 6, ? Figure 7 If)

Claims (1)

[Scope of Claims] (1) A developing device that supplies developer to the surface of an image carrier to develop an electrostatic latent image and a developer replenisher that supplies developer to the developing device form an integrated developing unit. are replaceably fitted,
Furthermore, an electrostatic recording device characterized in that the attached developing unit is identified. (2) The electrostatic recording device according to claim 1, wherein a display is made by the identification. (5) The electrostatic recording device according to claim 1 or 2, wherein development conditions adapted to the developer used in the development unit are set based on the identification.