JP2709422B2 - Image forming device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a roll-shaped recording material.
Pull out from the magazine and cut the tip with a cutter
The image forming apparatus that forms an image after processing
Also, the present invention relates to an image forming apparatus for saving the recording material when cutting the leading end of the recording material drawn out of the magazine.

[0002]

2. Description of the Related Art Some image forming apparatuses are configured such that a recording material such as a photosensitive material or an image receiving material accommodated in a roll in a magazine is drawn out of the magazine to form an image. When the recording material is drawn from the magazine, the leading end of the recording material must be straight and perpendicular to the longitudinal direction. If it is not such a shape, for example, if it is cut diagonally or it is broken and the end shape is deformed, a jam occurs during conveyance of the recording material, or a cut to make the size uniform after image formation Work must be done. In addition, in the case of a photosensitive material, the leading edge may be exposed due to the occurrence and release of a jam or the like. In this case, too, an undesired exposed portion of the leading edge must be cut.

However, it is difficult to detect the tip shape of the recording material, the presence or absence of exposure, and the like. Therefore, conventionally, when reloading the magazine or when something abnormal occurs,
Considering that it is necessary to cut the tip of the recording material,
It was automatically cut. For example, prior to the image forming process, it is detected whether or not the magazine has been taken out, and if it has been taken out, the tip cutting process is performed, and the same applies when a jam occurs and a door is opened to clear the jam. The front end is cut.

[0004]

However, even when an abnormality occurs, the tip cutting process may not actually be necessary. Further, even when the leading end shape of the recording material is not linear or deformed, image formation may be performed as it is and the recording material falls within an allowable range. In this case, the leading end cutting process is not necessary. Furthermore, if there is a door open or the like for clearing the jam, the leading edge of the photosensitive material is exposed, so it is necessary to cut the leading edge. No processing is required. However, if the front end cutting process is performed automatically without responding to the situation as in the past, the cut amount of the recording material increases, the waste amount increases, and resource saving and image forming cost reduction occur. It was an obstacle when planning. SUMMARY OF THE INVENTION An object of the present invention is to provide an image forming apparatus capable of saving recording material.

[0005]

SUMMARY OF THE INVENTION It is an object of the present invention to provide an image forming apparatus which draws out a roll-shaped recording material from a magazine, cuts the end of the recording material with a cutter , and forms an image. Detect presence
That the magazine detachment detection means and the door opening and closing detection means for detecting the opening and closing of the door to operate for jam release of said recording material
And a tip processing for instructing a cutting processing of a tip of the recording material.
Indicating means for detecting the attachment / detachment of the magazine or opening of the door.
One of the detection signals of the closing detection means and the tip processing instruction
When both of the output and the tip processing instruction signal from the means are output
The image forming apparatus is characterized in that the cutting process is performed only by the cutter .

[0006]

In other words, when there is a request for tip cutting processing based on the presence / absence of attachment / detachment of a magazine or opening / closing of a door operated when a recording material jam is cleared, the tip processing is started after an operator inputs a tip processing start instruction. Is performed, leading edge cutting is not performed when leading edge processing is unnecessary, so that consumption of recording material can be reduced, in other words, saving can be achieved.

[0007] The processing method of the recording material in the present invention is not particularly limited, and may be any of wet processing and dry processing. Examples of the photosensitive material that can be used in the present invention include a heat-developable photosensitive material. The photothermographic materials are described in U.S. Pat. Nos. 4,500,626 and 4,48.
No. 3,914, No. 4,430,415, No. 4,5
03,137, JP-A-59-154445, and JP-A-59-154445.
-180548, 59-165054, 61-
No. 88256, No. 60-120356, No. 59-21
Nos. 8443 and 61-238056.

The above-mentioned photothermographic material basically has a photosensitive silver halide, a binder, a dye-donating compound, and a reducing agent (a dye-donating substance may also serve as a reducing agent) on a support. In addition, an organic silver salt and other additives can be contained as needed.

The photothermographic material may be one which gives a negative image or a positive image upon exposure. The method of giving a positive image is a method using a direct positive emulsion (a method using a nucleating agent or a light fogging method) as a silver halide emulsion, and a dye that emits a positive diffusible dye image. Any of the methods using a donor compound can be adopted.

The solvent for image formation used for diffusion transfer includes, for example, water, and this water is not limited to so-called pure water, but includes water in a widely and conventionally used sense. Also,
A mixed solvent of pure water and a low boiling point solvent such as methanol, DMF, acetone and diisobutyl ketone may be used. further,
A solution containing an image formation accelerator, an antifoggant, a development terminator, a hydrophilic heat solvent and the like may be used.

[0011]

Embodiments of the present invention will be described below in detail with reference to the accompanying drawings. Needless to say, the present invention is not limited to this embodiment. FIG.
Is a schematic configuration diagram of an image forming apparatus according to an embodiment of the present invention,
FIG. 2 is a flowchart for explaining the leading edge processing of the recording material;
FIG. 3 is a circuit diagram.

The feature of this embodiment lies in the processing of the leading edge of a recording material (photosensitive material or image receiving material in this embodiment) which will be described later. A description of the unit will be given. A photosensitive material magazine 12 is arranged in the image forming apparatus 1.
The photosensitive material 14 is wound in a roll shape and stored in the inside 2. The photosensitive material 14 has a photosensitive silver halide, a binder, a dye-donating substance, and a reducing agent on a support. The dye-donating substance is transferred to the image-receiving material by being superposed on the image-receiving material and subjected to heat development. Transcribed.

The heat-development transfer process of the photosensitive material 14 is accelerated in the presence of an image forming solvent such as water. Sensitive Material Magazine 1
Photosensitive material 14 drawn out of 2 and cut to a predetermined length
Are transported to the exposure unit 16. A receiving material magazine 18 is arranged below the light-sensitive material magazine 12, and an image receiving material 20 is wound and stored in the receiving material magazine 18 in a roll shape. A dye fixing material having a mordant is applied to the image forming surface of the image receiving material 20.
The image receiving material 20 pulled out from the material receiving magazine 18 and cut into a predetermined length is conveyed to a heat development transfer unit 22 described later.

A platen glass 25 is provided on the upper portion of the main body. When a reflective original is used, an original cover 2 for covering the upper surface of the original is mounted. A light source 28, a first movable mirror 22A that moves together with the light source 28, and a plurality of second movable mirrors 22B whose relative movement is variable with respect to the first movable mirror 22A are disposed directly above the exposure unit 20 as a reflective original illumination device. All of them are movable along the platen glass 25. Further, through the imaging lens unit 19,
Photometric device 2 that measures the image density of a document based on the image light reflected by fixed mirror 23 and movable mirror 24
The exposure condition is determined by the photometric device 21. Exposure to the photosensitive material 14 is performed by the light source 28 and the first light source.
The second moving mirror 22 is moved while moving the moving mirror 22A.
B is moved at a predetermined speed to irradiate the light from the light source 28 along the original, and the reflected light is applied to the mirrors 22A, 22A.
B, 23 and the exposure unit 16 using the imaging lens unit 19.
Is formed on the photosensitive material 14 located at the position (1), and scanning exposure is performed.

A transparent original illumination device (proof unit) 30 is detachably mounted on the upper part of the main body. The transmissive original illumination device 30 is movable between an illumination position on the platen glass 25 and a standby position separated from the platen glass 25.

A transmissive light source 36 for illuminating the original on the platen glass 25 from the back side (upward in the figure) is provided in the transmissive original illumination device 30.
Is moved in the direction of the arrow a in the transmissive original illuminating device 30 to scan the original by slit scanning, thereby exposing the photosensitive material 14.

The photosensitive material 14 scanned and exposed by the exposure unit 16
Is conveyed upside down, and water as an image forming solvent is applied by a water application unit 38. The photosensitive material 14 to which water has been applied by the water application unit 38 is superimposed on the image receiving material 20 in the heat development transfer unit 29, and heat development transfer is performed. The thermal development transfer section 29 includes a heating drum 42 having a built-in heating element 40 such as a halogen lamp, and an endless pressure contact belt 44. The photosensitive material 14 and the image receiving material 20 are superimposed and pressed against the outer periphery of the heating drum 42 by the endless pressure contact belt 44, and are nipped and conveyed over the peripheral surface of the heating drum 42 in the superimposed state to be thermally developed. Has become. Thereby, the photosensitive material 14 emits a movable dye, and at the same time, the dye is transferred to the dye fixing layer of the image receiving material 20, so that an image can be obtained.

The photosensitive material 14 separated from the image receiving material 20 after the heat transfer is sent to a waste photosensitive material tray 46 provided below the thermal development transfer section 29. The image receiving material 20 separated from the photosensitive material 14 is
It is configured to be accumulated in the discharge tray 48. The separation between the photosensitive material 14 and the image receiving material 20 is performed by using the separation claw 5.
The separation between the heating drum 42 and the image receiving material 20 is performed by the separation claw 52.

Next, referring to FIGS. 2 and 3, a method for processing the leading edge of a recording material will be described. The recording material includes both the photosensitive material 14 and the image receiving material 20.
The tip processing method described below can be applied to both of them, but in the embodiment described below, an example of application to the photosensitive material 14 will be described. When there is a request for the front end processing of the photosensitive material 14 as shown in step S1, the front end processing is displayed as shown in step S2. Note that the tip processing request shown in step S1 includes the switch 61 for detecting removal of the magazine 12,
When the switch 62 for detecting a door open or the like for clearing the jam is switched to, for example, an ON state, the control circuit 6
3, it is determined that there is a tip processing request.

When the control circuit 63 determines that there is a request for the front end, the control circuit 63 drives the display circuit 64 for driving a display means constituted by, for example, a liquid crystal or an LED, and performs a front end processing display as shown in step S2. By the way, Magazine 12
The operator is aware of the shape of the photosensitive material 14 because the operator replaces the paper and clears the jam. Therefore, when the display shown in step S2 is present, the user determines whether or not the tip processing is necessary. If not, that is, if normal image formation can be performed, the user presses the normal processing key 66 provided on the control board 65. It is turned on as shown in step S3. As a result, the control circuit 63 controls the cutter driving circuit 67 and the cutter 68 so as not to operate so as not to perform the tip cutting process. The control circuit 63 drives the drive circuit 69, the transport rollers 71, and the like to control the drawing and transport of the photosensitive material 14 to be performed. Further, the control circuit 63 reads data necessary for image formation from the storage circuit 72 and performs predetermined control. Therefore, the process of cutting the leading end of the photosensitive material 14 is not performed, and the process proceeds to a normal image forming operation as shown in step S4.

On the other hand, if it is necessary to perform the front end cutting process and turn on the front end processing request key 73 in step S3, the front end cutting process of the photosensitive material 14 is performed as shown in step S11. In this case, the cutter driving circuit 67 is driven by the control circuit 63, and the leading end of the photosensitive material 14 is cut by the cutter 71. The control circuit 63 controls the drive circuit 69 and the transport roller 71 so that they do not operate.
4 is stopped. The image forming operation based on the read data from the storage circuit 72 is also controlled to be stopped. Incidentally, it is necessary to take out the cut photosensitive material 14 out of the apparatus. Therefore, in the present embodiment, after the front end cutting process is performed, as shown in step S12, the photosensitive material 14 is transported to a position where the user can easily take out the front end of the photosensitive material 14, and then, as shown in step S13. The jam display circuit 74 is driven to perform jam display, and prompts the user to remove the cut photosensitive material 14. Such control is sequentially performed based on a program stored in the storage circuit 72.

As described above, in the present embodiment, when there is a request for the leading edge processing of the recording material, the leading edge processing, that is, the leading edge cutting is performed according to the situation, so that the waste of the recording material can be eliminated. it can.

[0023]

As described above, according to the present invention, the field of the present invention
Image forming apparatus, a tip processing request based on the opening and closing of the door which is operated when a jam releasing the presence and recording material of the detachable magazine accommodating the recording material, the tip processing start instruction by the operator arbitrarily input is established at the same time At this time, a process of cutting the leading end of the recording material was performed. Therefore, the recording material is not cut unnecessarily without the instruction to start the leading edge processing, and is cut only when necessary. Therefore, waste of the recording material due to unnecessary cutting can be reduced.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram of an image forming apparatus according to an embodiment of the present invention.

FIG. 2 is a flowchart illustrating a leading edge processing of a recording material.

FIG. 3 is a circuit diagram illustrating the leading edge processing of a recording material.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Image forming apparatus 2 Document cover 12 Photosensitive material magazine 14 Photosensitive material 16 Exposure part 18 Receiving material magazine 20 Image receiving material 29 Thermal development transfer part 25 Platen glass 30 Transmission original illuminating device 38 Water application part 42 Heating drum 51, 52 Peeling nail 61 , 62 switch 63 control circuit 64, 74 display circuit 65 control board 66, 73 key 67 cutter drive circuit 68 cutter 69 drive circuit 71 transport roller 72 storage circuit

Claims (1)

(57) [Claims] 1. A magazine attachment / detachment detecting means for detecting the presence / absence of attachment / detachment of a magazine in an image forming apparatus for forming an image after drawing out a roll-shaped recording material from a magazine, cutting the leading end of the recording material with a cutter , and performing image forming.
When the door opening and closing detection means for detecting the opening and closing of the door to operate for jam release of the recording material, the leading end of the recording material
Tip processing instructing means for instructing a cutting process;
Either the magazine attachment / detachment detection means or the door open /
Output signal and a tip processing instruction signal from the tip processing instruction means.
No. and only when both are output by the cutter
An image forming apparatus that performs a cutting process .