JPH03139632A - Image forming device - Google Patents

Abstract

PURPOSE:To achieve speedy color matching at a low cost by exposing the picture of a specified original surface onto plural areas, which is divided in one picture area, under various color correction conditions set by the use of a color-correcting-condition setting means. CONSTITUTION:The image forming device is provided with a specified range inputting means for specifying a range of an original and with the color- correcting-condition setting means for setting conditions of density, color correction, etc., all of which differ from a specified range of the original. Shutter devices 41a and 41b reflect the requested range of the original, which is specified by the original range inputting means, onto a photosensitive recording medium with reflected light required for only the necessary range. An image of various conditions of color and density is outputted into one picture area of a single microcapsule paper 37, and an image can be formed. By developing this onto a developing paper, a picture with various conditions of color correction and density can therefore be formed on a single developing sheet.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an image forming apparatus, and particularly to an image forming apparatus suitable for finding appropriate exposure conditions.

[Conventional technology]

Conventionally, in such an image forming apparatus, light emitted from a halogen lamp is reflected by an original and then formed into an image on microcapsule paper via an optical system.

Next, the microcapsule paper is moved to the left on the exposure platform at the same speed as the moving speed of the document table glass, and the image of the document is formed as a latent image on the microcapsule paper.

Next, as the platen glass moves to the left, the developer paper is taken out from the developer paper cassette, and the latent image on the microcapsule paper is developed by being superimposed on the microcapsule paper of the exposure flow and fed to the pressure developing device. It is colored and transferred onto developer paper. Thereafter, the color developing paper is thermally fixed by a thermal fixing device, and is discharged from the image forming apparatus.

In order to obtain the desired image output, the optimum density and color correction conditions are determined by directly printing on several sheets of paper by manipulating the density, color correction status, etc., and then image formation is performed based on the printing results. It is supposed to be done.

On the other hand, some digital image forming apparatuses have a color matching function and form the same image on a sheet of color developing paper using several types of color correction condition densities.

[Problem to be solved by the invention]

However, in order to obtain the desired image output, it is necessary to adjust the density, color correction conditions, etc. multiple times step by step.
If images are formed by exposing each time, there is a problem in that several sheets of developer paper and photosensitive recording media are wasted.

Furthermore, although digital image forming apparatuses have a color matching function, they have a problem in that they are expensive.

The present invention has been made in view of the above-mentioned problems, and its purpose is to transfer multiple images with different density and color correction conditions to divided areas within the image area of a sheet of microcapsule paper. An object of the present invention is to provide an image forming apparatus capable of performing color matching quickly and inexpensively by forming images.

[Means for Solving the Problems] The present invention, which has the above object, provides an image forming apparatus that exposes an original image of a document onto a photosensitive recording medium, and includes a specified range input means for specifying a specified range of the document; color correction condition setting means for setting conditions such as density and color correction that differ for each range; The image forming apparatus includes a plurality of image forming means for exposing each image under various color correction conditions set by a setting means.

[Effect]

The image forming apparatus having the above-mentioned purpose performs various color corrections on a desired area of a document specified by a specified area input means by reflecting only the necessary portion of reflected light onto a photosensitive recording medium using a shutter device. Image of condition concentration 1
An image is formed by outputting it into one image area of a sheet of microcapsule paper.

Therefore, if this is developed on a color developer paper, images with a plurality of color correction conditions and densities can be formed on a single color developer paper, so that the developer paper and the photosensitive recording medium are not wasted.

〔Example〕

Hereinafter, the present invention will be explained based on an illustrated embodiment. FIG. 1 shows an image forming apparatus 60 capable of full-color copying, and as shown in FIG. A table 2 and a document table cover 1 are provided, and the document table 2
The original is placed face down on top of it. A light source consisting of a halogen lamp 3 extending in a direction perpendicular to the direction of movement of the document table 2 and a semi-cylindrical reflecting mirror 4 arranged to surround it is fixed to the upper right side of the image forming device 60. Light is irradiated toward the document table 2 through a slit Q provided at the top thereof.

Therefore, the light from the halogen lamp 3 sequentially illuminates the entire surface of the document table 2 from the left end to the right end as the document table 2 moves in the left-right direction. The light emitted from the light source passes through the transparent document table 2 and is reflected by the document placed on the document table 2, and covers the top surface of the document table 2 so that the irradiated light does not leak from areas other than the document. A document table cover 1 is provided.

Further, in order to fully utilize the light from the halogen lamp 3 for irradiating the original, a reflector 5 is arranged to the left of the light source, and reflects the light from the halogen lamp 3 for use in irradiating the original.

Further, a fan 6 and a louver 7 for introducing air from the outside are provided to the right of the halogen lamp 3, and the fan 6 and the louver 7 supply external air to the document table 2. Light emitted from the halogen lamp 3 and reflected from the document placed on the document table 2 passes through the filter 8 and enters the lens 9 . The filter 8 is used to change the light transmission characteristics according to the sensitivity characteristics of the microcapsule paper 37 and adjust the color tone of the copied image. The lens 9 is attached to the lens mounting plate 10 so as to be able to make minute angle adjustments with respect to the optical path, and the light focused by the lens 9 is redirected by 180 degrees by two reflecting mirrors 11, and is closely positioned below the exposure table 19. microcapsule paper 37
is imaged on. The two reflecting mirrors 11 are fixed to a mirror mounting plate 12, and the optical path length and focus are adjusted by finely adjusting the mounting position of the mirror mounting plate 12.

On the other hand, a long microcapsule paper 37 is wound around a cartridge shaft 14 and housed in a removable cartridge 13 disposed below the document table 2, and one end of the paper is connected to a number of rollers and a pressure developing device. 20 and then wound onto a winding shaft 25.

That is, the microcapsule paper 37 that comes out from below the cartridge 13 is guided by the feed roller 15 and tie roller 17, passes below the exposure table 19, and then is supplied to the pressure developing device 20. After passing through the pressure developing device 20, the microcapsule paper 37 is guided to a peeling roller 23 and an adjusting roller 24, and then wound onto a winding shaft 25.

The unexposed microcapsule paper 37 after leaving the cartridge 13 is held by the light-shielding cover 16 so as not to be exposed to light.

The transport speed of the microcapsule paper 37 is controlled to be constant by the capsule paper feed roller 22, and also matches the moving speed of the document table 2. Latent images of predetermined lines of the original are sequentially formed on the microcapsule paper 37 as it passes through the exposure table 19 . Two shutters 41a and 41b are disposed below the microcapsule paper 37 located below the exposure table 19, and are movable in synchronization with the movement of the microcapsule paper 37.
A rack (not shown) is attached to the shutters 41a and 41b, and the mechanism for moving the two shutters 41a and 41b is a well-known structure consisting of a combination of a rack and a pinion, so a detailed explanation will be omitted.

Further, a color developer paper cassette 32 that accommodates color developer paper 38 is provided below the pressure developing device 20, and the color developer paper 38 is transferred to a half-moon roller 33 provided above the color developer paper cassette 32.
The sheets are taken out one by one by the developer paper roller 34 and the registration gate 35 to align the leading ends thereof, and then conveyed to the paper conveyance entrance of the pressure developing device 20.

Therefore, the pressure developing device 20 includes the microcapsule paper 37.
The color developer paper 38 and the color developer paper 38 are supplied in close contact with each other and integrated. Here, the pressure developing device 20 is composed of a small diameter roller 21 and a backup roller 31. Inside the pressure developing device 20, the microcapsule surface of the microcapsule paper 37 on which the latent image is formed and the developer-coated surface of the color developer paper 38 are in contact with each other on the inside, and are integrated into the small diameter roller 21 and the backup roller 31. It is inserted between the two and pressure is applied. This pressure destroys the unexposed microcapsules on the microcapsule paper 37 and forms an image on the color developer paper 38.

The microcapsule paper 37 and color developer paper 38 that come out of the pressure developing device 20 with images formed thereon are transported by a capsule paper feed roller 22, and the microcapsule paper 37 is moved upward by a peeling roller 23, and the color developer paper 38 is moved perpendicularly to each other by a peeling roller 23. Separated in direction. The color development paper 38 is enhanced by the heat fixing device 50 to form an image, and then is discharged to the paper discharge tray 27 with the image side facing up. The heat fixing device 50 is composed of a hollow heat roller 29 having a heater 30 therein and a developer paper feed roller 28. The separated microcapsule paper 37 passes through the meandering adjustment roller 24 and is wound around the winding shaft 25.

Next, the electrical configuration of this embodiment will be explained with reference to FIG. 2. The control circuit 40 includes a CPU 40a.

The optical path includes a light source section 3a', which is configured mainly of a ROM 40b and a RAM 40c, and controls the light intensity of the halogen lamp 3 via an input/output boat 40d; A filter unit 3a that controls the lens 9 to enter and exit by a predetermined amount; a lens moving unit 9a that moves the lens 9 along the optical path according to the magnification; The microcapsule paper transport control unit 37a1 stops the transport of the small diameter roller 21 in the pressure developing device 20, or rotates the small diameter roller 21 at a predetermined speed.
Pressure development control section 20a1 that controls pressure contact and release between the back-up roller 31 and the half-moon roller 33
, the developer paper transport section 38a1 rotates the developer paper roller 34 to transport the developer paper 33 to the pressure developing device 20, and the resist gate 35 enters or exits the developer paper 38 transport path at a predetermined time. A thermal fixing device control unit 29a that controls the amount of heat generated by the roller 29; an operation unit that includes setting keys (not shown) for various settings such as color matching mode selection and condition settings for the copy image formed on the microcapsule paper 37; 42, is connected to a shutter moving section 41c that moves the shutters 41a, 41b at predetermined times.

The device configured as described above operates as follows.

Now, after opening the document table cover 1 and placing the document on the document table 2, if you press the start button (not shown), the document table 2 will first move to the right in FIG. Stops at the position where the left end faces the light source. Thereafter, with the halogen lamp 3 on, the document table 2 is moved to the left.

The light emitted from the halogen lamp 3 is reflected by the original, and then passes through the filter 8, the lens 9, and the two reflecting mirrors 11.
After being reflected, an image is formed on the microcapsule paper 37 located below the exposure table 19. At this time, the microcapsule paper 37 is moved to the left on the exposure table 19 at the same speed as the moving speed of the document table 2, so that the image on the document is formed as a latent image on the microcapsule paper 37. .

In the composition mode, the shutters 41a and 41b move in synchronization with the movement of the microcapsule paper 37, and the manner thereof will be described in detail later.

As the document platen 2 moves to the left, the color developer paper 38 is taken out from the color developer paper cassette 32 by the half-moon roller 33 and is supplied to the pressure developing device 20 in a state where it is overlapped with the microcapsule paper 37 of the exposure flow. capsule paper 3
The latent image on color developing paper 38 is developed and transferred onto color developing paper 38.

Thereafter, the color developing paper 38 is thermally fixed by the thermal fixing device 50 and then discharged outside the image forming apparatus 60. On the other hand, the microcapsule paper 37 that has passed through the pressure developing device 20 is sequentially wound around the winding shaft 25. When the right end of the document table 2 finishes moving to a position facing the light source, copying of the document is completed and the halogen lamp 3 is turned off.

Next, the operation of the shutter 41a s 41bN document table 2, etc. when copying is performed under two or more density conditions or color correction conditions in a color matching mode that matches the colors in the original will be described.

First, press the color matching mode key to enter color matching mode.

Next, specify the original size, then enter the starting position for copying the original and how far from there to copy.

In other words, specify where to copy the parts of the document that require color matching. When inputting these data, for example, the distance from the top position of the document placed on the document table is used. These data X are input to the CPU 40a from the original size designation key, and first, microcapsule paper 37 feed start time T, microcapsule paper 37 feed end time T, shutter 4'lb feed start time T are calculated. Note that T , TMlS
GT8 changes depending on the document size and copy magnification.

2. Also, based on the data X, the CPU 401a calculates how many types of image conditions can be tested by outputting one sheet.

Next, the number of image conditions that can be tried is displayed on the display means of the apparatus. Then, image conditions are inputted based on this display means, and the image conditions (density, color correction) are changed in this order, and the same image is copied onto a single output sheet as shown in FIG.

For example, let's assume that you use an A4-sized original and want to obtain an A4-sized output. 130mm as shown in Figure 3(a)
If you set it to make several copies with a width of , you can try three different types. . Therefore, the first image is a standard image, the second is an image with the light intensity increased by two steps, and the third is an image with a standard light intensity and a 23TEP filter inserted, and these are input.

After setting the above data, press the copy button to start copying. Next, the movement of the shutter will be explained.

After T c , (s) after the halogen lamp 3 as a light source is turned on and the document table 2 moves from the starting position, that is, when the initial position for copying the document reaches the 5TART position in FIG. 4, the microcapsule paper is The conveying section 37a is driven, the microcapsule paper 37 is conveyed, and at the same time as exposure is started, the shutter moving section 41c is driven, and the shutter 41a moves at the same speed as the microcapsule paper 37, as shown in FIG. 4(b). Move with. At this time, the right side of the shutter 41a in FIG.
Only the left side from the ART position is blocked from light. Eventually, the shutter 41a reaches the state shown in FIG. 4(C).

Then, after Ts [s] after the document table 2 starts to be fed, that is, the final position where the document is copied is END in FIG. 4(C).
When the shutter 41b reaches the position, the shutter 41b is driven at the same speed as the microcapsule paper 37.

At this time, the left end of the shutter 41b in FIG. 4 shields only the right side of the microcapsule paper 37 from the END position. When the shutter 41b moves further to the left, the shutter 41b eventually reaches the state shown in FIG. 4(e).

In this way, a latent image is formed on the microcapsule paper 37 only in a specific range of the original that has been input in advance.

Next, the shutters 41a and 41b are returned to the state shown in FIG. 4(a), and the END position of the microcapsule paper 37 is changed to the state shown in FIG. 4(a).
) to the 5TART position, and return the document table 2 to the start position. Then, turn on the light source two steps brighter than the standard light source, and repeat the above operation once again.

Next, the shutters 41a and 41b are returned to the state shown in FIG. 4(a), the END position of the microcapsule paper 37 is moved to the 5TART position in FIG. 4, and the document table 2 is returned to the start position. Then, insert the filter in 2 steps, turn on the light source at standard brightness, and repeat the above operation again.

In this way, as shown in FIG. 3, the same image is output on one sheet and is copied under three different image conditions.

In the above embodiments, an image forming apparatus with a movable document table has been described, but the present invention can be carried out in a similar manner even in the case of a fixed document table.

〔Effect of the invention〕

As is clear from the detailed description above, according to the present invention, the same image can be formed on a single sheet of output under designated types of image conditions, so paper is not wasted for color matching, and Cheap and quick color matching becomes possible.

[Brief explanation of the drawing]

FIG. 1 is a schematic configuration diagram of the image forming apparatus of the present invention, FIG. 2 is a process diagram of the image forming apparatus of the present invention, and FIG. 3 is an explanatory diagram of the image setting range of the image forming apparatus. Yes, Fig. 3 (a) is an explanatory diagram when setting the copy range, Fig. 3 (b) is an explanatory diagram explaining the image after copying, and Fig. 4 (a) (b)
(c), (d), and (e) are explanatory diagrams of the operation of the shutter section of the image forming apparatus. 1... Original platen cover 2... Original platen 3... Halogen lamp 6 5... Reflector 6... Fan 7... Louver 8... Filter 9... Lens 10... Installation Plate 11... Reflection mirror 12... Mirror mounting plate 13... Cartridge 14... Cartridge shaft 15... Feed roller 16... Light shielding cover 17... Roller

Claims (1)

[Scope of Claims] An image forming apparatus that exposes an original image of a document onto a photosensitive recording medium, comprising a specified range input means for specifying a specified range of the document, and conditions such as density and color correction that differ for each specified range of the document. color correction condition setting means for setting an image of the designated document surface in a plurality of divided areas in one image area of the photosensitive recording medium, and various color correction conditions set by the color correction condition setting means; 1. An image forming apparatus comprising: a plurality of image forming means for respectively exposing images.