JPH0647956U - Image forming device - Google Patents

Abstract

(57) [Summary] [Purpose] To prevent the temperature rise of the cartridge storage part of the photosensitive material that is easily affected by the temperature rise. [Constitution] The cartridge 20 is arranged in an independent partition 22 on the upper part of the main body, and the main body constituting mechanism is not arranged under the cartridge. Further, the cartridge is arranged outside the main body exterior 24.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an image forming apparatus for forming an image, such as a copying machine or a printer, using a photosensitive transfer type material, and particularly to the arrangement of a photosensitive member cartridge.

[0002]

[Prior art]

 A wide variety of image forming methods and devices are known, and a conventional example of an image forming device using a photosensitive transfer type material is, for example, JP-A-62-147461. According to this publication, the main mechanical parts such as the exposing part, the heat developing part, and the pressure transfer part are formed inside one constituent body in the apparatus, and the image formation is performed by the following procedure.

First, a roll-shaped photosensitive transfer type heat-developable material arranged in the apparatus is cut into a predetermined length, and then imagewise exposed to form a latent image. Next, heat development is performed with a heating roller. After that, the photosensitive member and the image receiving paper are superposed and pressure-transferred by the rollers, and the separating device discharges the photosensitive member to the photosensitive material discarding portion and the image receiving paper to the tray via the fixing device.

[0004]

[Problems to be solved by the device]

 However, the above-mentioned related art has the following problems.

Since the photosensitive member is disposed inside the apparatus despite being susceptible to temperature changes, the heat generated from the heat developing mechanism raises the temperature inside the apparatus, and further the temperature of the photosensitive member is increased. In order to raise the temperature, the characteristics such as sensitivity and density of the photosensitive member are deteriorated and the output image is deteriorated.

The present invention solves the above problems in view of such a situation, and an object of the present invention is to provide an image forming apparatus which causes little deterioration in image quality even if a photosensitive member is left in the apparatus for a long time. To provide.

Further, another object is to provide an image forming apparatus in which the cartridge can be easily replaced.

[0008]

[Means for Solving the Problems]

 The image forming apparatus of the present invention uses a photosensitive transfer type heat developing material, a cartridge for accommodating the photosensitive member, an exposure mechanism for exposing the photosensitive member, and a pressure for superimposing the photosensitive member and the transfer member. In a device having a pressure transfer mechanism and a heating mechanism for fixing or developing in the main body, the cartridge is arranged in an independent partition on the upper part of the main body, and the main body constituting mechanism is arranged under the cartridge. An image forming apparatus characterized by the fact that it does not exist.

Further, the image forming apparatus is characterized in that the cartridge is arranged outside the main body exterior.

[0010]

【Example】

 Hereinafter, the image forming apparatus of the present invention will be described in detail according to embodiments.

FIG. 1 is a front sectional view of a copying machine showing an embodiment of the present invention. First, the operation of the copying machine will be described.

A document 2 is placed on a document table 1 movably provided in the direction of arrow A in the figure, and the light beams emitted from the red lamp 3, the green lamp 4, and the blue lamp 5 which are light sources are emitted. The original 2 is irradiated, and the reflected light from the original 2 is formed so as to form an image on the photosensitive member 8 that moves on the exposure table 7 through the lens 6 to form a so-called scan exposure system.

The continuous sheet-shaped photosensitive member 8 sent from the cartridge 20 that houses the unexposed photosensitive member 8 is exposed on the exposure table 7 to form a latent image, and then passes through the transport roller 9. Heat development is performed by the heat development device 40. On the other hand, the cut sheet-shaped transfer member 11 housed in the paper feed tray 10 is sent out by the paper feed device 12, and is superposed on the photosensitive member 8 in synchronization with the image area formed on the photosensitive member 8 to press the roller. The pressure is transferred by the pressure transfer device 60 of the method. The pressure unit of the pressure transfer device 60 is composed of three rollers, an upper roller 61, a middle roller 62, and a lower roller 63, and pressure transfer is performed between the upper roller 61 and the middle roller 62.

After that, the transfer member 11 is separated from the photosensitive member 8 by the separation roller 64 and is discharged to the paper discharge tray 14 through the conveying roller 13. The photosensitive member 8 promotes the conveyance and separation of the photosensitive member 8. It is wound around the winding shaft 21 via the pinch roller 65.

Reference numeral 15 is a manual paper feed port, and 16 is a gas filter for removing gas generated in the machine.

Next, the cartridge portion, which is a feature of the present invention, will be described. The cart carriage 20 is arranged in a cartridge space 23 separated by a partition 22 arranged in the main body. In the lower part of the cartridge space 23, the components of the apparatus main body are not arranged, and only the paper feed tray 10 and the paper discharge tray 14 are provided. Therefore, even if the heat generated in the heat developing device 40 raises the temperature inside the device, the heat transfer to the cartridge space 23 is hindered by the partition 22, so that the temperature rise of the cartridge 20 can be prevented. Further, since the lower part of the cartridge space 23 is outside the device, heat inside the device does not heat the cartridge space 23 from below.

FIG. 2 is a front sectional view showing another embodiment of the image forming apparatus according to the present invention, in which the cartridge space is arranged outside the main body exterior. As in the embodiment of FIG. 1, since the outer case 24 is isolated from the inside of the main body, the temperature rise of the cartridge space 23 is prevented and the temperature rise of the cartridge 20 can be prevented.

In the present embodiment, the heat-developing image forming apparatus has been described, but the present invention is not limited to this, and it is needless to say that it can be applied to an image forming apparatus using a sheet of a photo-curing type pressure developing method or the like. .

Further, in the present embodiment, the copying machine has been described as an example, but the present invention is not limited to this, and it is needless to say that the present invention can be applied to all image forming apparatuses such as printers, facsimiles, and electronic cameras. Absent.

[0020]

[Effect of device]

 As described above, according to the image forming apparatus of the present invention, in the image forming apparatus using the photothermographic material of the photoconductive transfer type, the cartridge is arranged in the independent partition on the upper part of the main body, and the cartridge is placed under the cartridge. Even if the temperature inside the device rises due to the absence of the main body structure mechanism, the temperature of the photosensitive material, which is easily affected by temperature changes, can be kept at the temperature of the outside air. It is possible to always maintain the output image in the best condition without deteriorating the characteristics such as.

Further, by disposing the cartridge outside the main body exterior, there is an effect that the cartridge can be easily replaced.

[Brief description of drawings]

FIG. 1 is a front sectional view showing an embodiment of the present invention.

FIG. 2 is a front sectional view showing another embodiment of the present invention.

[Explanation of symbols]

 1 Original Plate 2 Original 3 Red Lamp 4 Green Lamp 5 Blue Lamp 6 Lens 7 Exposure Plate 8 Photosensitive Member 9, 13 Conveying Roller 10 Paper Tray 11 Transfer Member 12 Paper Feeding Device 14 Paper Ejection Tray 15 Manual Paper Feeding Port 16 Gas Filter 20 Cartridge 21 Winding Shaft 22 Partition 23 Cartridge Space 24 Outer Case 40 Thermal Development Device 60 Pressure Transfer Device 61 Upper Roller 62 Middle Roller 63 Lower Roller 64 Separation Roller 65 Pinch Roller

Claims (2)

[Scope of utility model registration request] 1. A cartridge containing the photosensitive member, a cartridge for containing the photosensitive member, an exposure mechanism for exposing the photosensitive member, and In a main body having a pressure transfer mechanism that pressurizes a photosensitive member and a transfer member in an overlapping manner, and a heating mechanism for fixing or developing, the cartridge is arranged in an independent partition on the upper part of the main body,
The image forming apparatus is characterized in that the main body constituting mechanism is not arranged under the cartridge. 2. The image forming apparatus according to claim 1, wherein the cartridge is arranged outside the main body exterior.