JPH0451184A - Image forming device - Google Patents

Abstract

PURPOSE:To automatically read information on a roll photosensitive paper by providing a read means for reading the information on the photosensitive paper recorded on the core material of the roll photosensitive paper. CONSTITUTION:The read means for reading the information recorded on the core material of the roll photosensitive paper is provided. Namely, a photosensitive paper holding drum 42 is supported to a supporting board 41 fixed on the bottom of a cartridge 2 holding the roll photosensitive paper so that it can not rotate. A hole for transmitting light 44 is provided on the drum 42 and a reflection type photosensor is arranged to be opposed to the hole 44 inside the drum 42. The roll photosensitive paper rotates integrally with the photosensitive paper and the core but the drum 42 does not rotate because it is supported to the supporting board 41 so that it can not rotate. Therefore, a bar code passes before the photosensor. At this time, the photosensor detects the bar code and inputs it in a CPU. Thus, the information on the photosensitive paper is automatically read.

Description

Detailed Description of the Invention [Industrial Application Field] The present invention uses a roll of photosensitive paper as a recording medium, includes a roll holding means for rotatably holding the roll of photosensitive paper, The present invention relates to an image forming apparatus that forms images.

[Prior Art] Conventionally, an image forming apparatus using this type of rolled photosensitive paper had a configuration as shown in FIG.

FIG. 6 is a block diagram of an electric circuit, in which the CPU 20 sends commands according to data input from the front panel 21 to the charging voltage generation circuit 22 and the developing bias voltage generation circuit 23.
, and are transmitted to the exposure device drive circuit 24, respectively. The charging voltage generation circuit 22 applies a voltage to the charger 8 according to a command from the CPU 20 . The developing bias voltage generation circuit 23 is C
A voltage according to a command from the PU 20 is applied to the developing electrode 12. The exposure device drive circuit 24 controls and drives the exposure device 9 so as to generate an exposure amount according to a command from the CPU 20.

Information about the photosensitive paper, such as sensitivity, paper width, paper quality, temperature and humidity coefficient, is recorded on the wrapping paper of the roll of photosensitive paper.

Sensitivity information refers to variations in sensitivity characteristics that occur during the manufacturing stage of roll photosensitive paper, and the CPU 20 that receives the sensitivity information converts exposure data accordingly and transmits it to the exposure device drive circuit 24. .

Paper width information is the length of the roll of photosensitive paper in the axial direction.
For example, if it is 297 (mm), it is A3 size (420*297
), and A4 size (297*210).

The paper quality information indicates what the base of the roll-shaped photosensitive paper is made of, for example, general paper, resin PET for high image quality, transparent film for OHP, etc.

The temperature/humidity coefficient information refers to variations in the temperature/humidity characteristics that occur during the manufacturing stage of the roll photosensitive paper, similar to the sensitivity information, and the CPU 20 inputted with the temperature/humidity coefficient information converts the charged potential data in accordance with this information. This information is used as a coefficient for calculating development bias voltage data.

The front panel 21 is provided with a color specification key, a density setting key, a number of sheets setting key, a magnification setting key for enlarging/reducing, a copy start key, and the like, as well as a setting key for the photosensitive paper information.

The operation of a conventional image forming apparatus having such a configuration will be explained.

The operator selects the necessary rolled photosensitive paper, takes out the photosensitive paper from the wrapping paper, and attaches it to the image forming apparatus, and at the same time reads the photosensitive paper information on the front panel 21 according to the photosensitive paper information recorded on the wrapping paper. Operate the setting key to set CPU2
Enter 0. The CPU 20 determines the voltages to be applied to the charger 8 and the developing electrode 12, and the amount of exposure to be generated by the exposure device, according to the input photosensitive paper information. These determined voltage data and exposure amount data were executed to form an image.

[Problems to be Solved by the Invention] However, as described above, each time the operator replaces the roll of photosensitive paper, the operator must input photosensitive paper information by hand, which is cumbersome.

Furthermore, since the operator inputs the information manually, there is a problem that mistakes are likely to occur.

The present invention has been made to solve the above-mentioned problems, and when a roll of photosensitive paper is loaded into an image forming apparatus and the image forming process is started, the roll of photosensitive paper is rotated, and the photosensitive paper is automatically removed. By providing an image forming apparatus that can read information, the purpose is to eliminate the troublesomeness of the operator inputting the information on photosensitive paper by hand, and to also reduce the risk of inputting incorrect information. shall be.

[Means for Solving the Problems] In order to achieve this object, the image forming apparatus of the present invention includes reading means for reading photosensitive paper information recorded on the core material of the roll-shaped photosensitive paper, in the roll holding means. We are prepared.

[Function] In the image forming apparatus of the present invention having the above configuration, the reading means is incorporated in the roll holding means, the roll of photosensitive paper on which the photosensitive paper information is recorded is attached, and the roll of photosensitive paper is When the paper rotates, the photosensitive paper information recorded on the core material of the rolled photosensitive paper is automatically read.

[Example] Hereinafter, an example embodying the present invention will be described with reference to the drawings. In the description, the same parts as those in the conventional example shown in FIG. 6 are given the same reference numerals, and the description thereof will be omitted.

FIG. 1 shows the overall structure, in which a cartridge 2 containing a roll of photosensitive paper 1 is placed in the upper right corner of a housing 3. There is also a paper feed roller 4 inside the cartridge 2.
is equipped. A cutter 5 is placed on the conveyance path of the photosensitive paper.
, a guide 6, and an exposure drum 7 are arranged. Around the exposure drum 7, a charger 8, an exposure device 9, a developer 10, and a static eliminator 11 are arranged in order in the drum rotation direction. A roller 13 is provided respectively. Exposure drum 7
A paper ejection belt 14 is disposed at the upper left of the housing 3, and is configured to eject the photosensitive paper 31 to a paper ejection tray 15 attached to the housing 3. Further, a front panel 21 is arranged on the front surface of the housing 3 so that it can be operated by an operator.

FIG. 2 is a perspective view of a holding means for a roll of photosensitive paper 1;
A photosensitive paper holding drum 42 is non-rotatably supported on a support base 41 fixed to the bottom of the cartridge 2. The drum 42 is provided with side plates 43a and 48b at both ends thereof, and is removable from the support base 41 together with the side plates 43a and 43b. One of the side plates 43a is also removable from the drum 42. The drum 42 is provided with a hole 44 for light transmission.

A cross-sectional view of this portion is shown in FIG. A reflective optical sensor 45 is arranged inside the drum 42 facing the light transmission hole 44 .

FIG. 4 is a block diagram of the electric circuit. The CPU 20 receives input from the front panel 21 as well as the optical sensor.
The converted data signal from a reading circuit 51 which reads the signal from 45 and converts it into data is also input. That is, in this embodiment, the light transmission hole 44,
The optical sensor 45 and the reading circuit 51 constitute reading means.

FIG. 5 is a perspective view of the rolled photosensitive paper 1, in which a photosensitive paper 31 coated with a photosensitive agent such as TiO2 is wound around a core 32. As shown in FIG. Inside the core 32, photosensitive paper information of the photosensitive paper 31 as described in detail in the prior art is recorded by a bar code 33.

Next, the operation of this embodiment will be explained.

The operator selects the required roll of photosensitive paper 1, and
is taken out from the wrapping paper and attached to the cartridge 2. Next, when the operator operates the copy start key, the photosensitive paper 31 is conveyed to the paper feed roller 4, wound around the exposure drum 7 along the guide 6, and cut by the cutter 5 to a predetermined length.

At this time, the rolled photosensitive paper 1 rotates together with the photosensitive paper 31 and the core 32, but the photosensitive paper holding drum 42
It does not rotate because it is non-rotatably supported. In other words,
The light transmission hole 44 and the optical sensor 45 also do not rotate. Therefore, the barcode 33 passes in front of the optical sensor 45. At this time, the optical sensor 45 detects the barcode 33, and the reading circuit 51 converts this signal into a data signal of photosensitive paper information and inputs it to the CPU 20.

As described above, the photosensitive paper information is input to the CPU 20, and the voltages to be applied to the charger 8 and the developing electrode 12, and the amount of exposure to be generated by the exposure device are determined in accordance with the information. The photosensitive paper 31 wound around the exposure drum 7 is charged by a charger 8, exposed to light by an exposure device 9 to form an electrostatic latent image, developed by a developer 10, and residual charges are removed by a static eliminator to form an image. is formed. The photosensitive paper 31 after the image formation is discharged out of the housing 3 by a paper discharge belt 14 and a paper discharge tray 15.

Since an image is formed in this manner, it is possible to output a good image that matches the characteristics of the loaded roll of photosensitive paper 1.

Further, in this embodiment, the image formed on the photosensitive paper was outputted as it is, but the present invention is not limited to this. is also valid.

[Effects of the Invention] As is clear from the detailed description above, according to the present invention, a roll of photosensitive paper is attached to an image forming apparatus, and the roll of photosensitive paper is rotated when the image forming process is started. Then, it is possible to provide an image forming apparatus that automatically reads photosensitive paper information. This eliminates the troublesomeness of the operator inputting the photosensitive paper information by hand, and also reduces the risk of inputting incorrect information.

[Brief explanation of drawings]

1 to 5 show embodiments embodying the present invention, FIG. 1 is a block diagram showing the overall structure, and FIG. 2 is a perspective view of a holding means for a roll of photosensitive paper. FIG. 3 is a sectional view of a drum for holding rolled photosensitive paper;
FIG. 4 is a block diagram of an electric circuit, and FIG. 5 is a perspective view of a roll of photosensitive paper. Further, FIG. 6 is a block diagram of an electric circuit showing a conventional example. In the figure, 1 is a roll of photosensitive paper, 32 is a core of the roll of photosensitive paper, 33 is a bar code, 42 is a photosensitive paper holding drum, 44 is a hole for light transmission, 45 is an optical sensor, and 51 is a reading circuit.

Claims (1)

[Scope of Claims] 1. In an image forming apparatus for forming an image on the roll of photosensitive paper, the image forming apparatus is provided with a roll holding means for rotatably holding a roll of photosensitive paper, and the roll holding means includes a roll of the roll of photosensitive paper. An image forming apparatus comprising a reading means for reading information recorded on a core material of photosensitive paper.