JPH09297498A - Color image processing device and method and projecting method for transmissible recording medium - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the blurring of an image at the time of projecting and to output an optimum transparent film by controlling the switching of the image transferred to a recording medium to an erecting image or a mirror image, on the basis of the classification of a fed recording medium. SOLUTION: The CPU of a reader controller RCON decides whether the OHP key of a final control element is depressed or not. When the OHP key is depressed, the CPU turns on an OHP mode and outputs mirror image output instructions to a printer controller PCON. Then, this printer controller PCON controls an image forming part, based on information of an original image after being read from a reader part RDR and having fixed image processing, to form electrostatic latent images as the erecting images on a photoreceptor drum 2. Then, these electrostatic latent images are developed by color developing units and successively transferred to an OHP film transferred to a transfer drum 8, as the mirror images. Respective superimposed/transferred color images are fixed and the OHP film is ejected to output the mirror images. On the other hand, when it is judged that the OHP key is not depressed, a normal copying mode is set.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a color image processing apparatus, a color image processing method, and a transparent recording medium capable of forming a color image on various recording media including a transparent film for an overhead projector (hereinafter, OHP). It relates to a projection method.

[0002]

2. Description of the Related Art Conventionally, it has been generally practiced to form a monochromatic image on a film of transparent polyester or the like by an electrophotographic apparatus, subject the obtained image to an OHP or the like, and use it as a projection image.

In recent years, full-color images have been formed using this electrophotographic apparatus, and there has been an increasing demand for outputting full-color images on a transparent film for the aforementioned projection images.

FIG. 8 is a schematic sectional view for explaining the structure of a color image processing apparatus applicable to this type.

In the figure, one side of the apparatus main body 100 (see FIG.
(The right side of the apparatus) to the substantially central portion of the apparatus main body 100, and at the approximate central portion of the apparatus main body 100 in the vicinity of the transfer drum 8 constituting the transfer material conveying system. The latent image forming section is roughly divided into a developing means, i.e., a rotary developing device arranged in the vicinity of the latent image forming section.

The transfer material transport system described above is used in the apparatus main body 1
Transfer material supply trays 101 and 102 that are detachably attached to the opening formed on one side of 00 (right side of FIG. 8).
And paper feed rollers 103 and 104 arranged substantially directly above the trays 101 and 102, and the feed roller 10
3, 104, a sheet feed guide 4A provided with a sheet feed roller 106, and a sheet feed guide 4 provided with a sheet feed roller 5.
b, the contact roller 7, the gripper 6, the transfer material separating charger 12, and the separating claw 14 which are provided in the vicinity of the outer peripheral surface from the upstream side to the downstream side in the rotation direction.
And a transfer drum 9 and a transfer material separating charger 13 disposed on the inner peripheral side thereof, which are rotatable in the arrow direction shown in FIG. Conveyance belt means 15 provided in the vicinity of the conveyance belt means 15 and a device body 100 that is disposed close to the conveyance direction end side of the conveyance belt means 15 and extends to the outside of the apparatus body 100, and is detachable. It is composed of a tray 17 and a fixing device 16 adjacent to the tray 17. The fixing device 16 includes fixing rollers 161, 162, an applicator 163, and a cleaning belt 164.

The latent image forming portion has an outer peripheral surface abutting on the outer peripheral surface of the transfer drum 8 and is rotatable in the arrow direction shown in FIG.
And the photosensitive drum 2 near the outer peripheral surface of the photosensitive drum 2.
Charger 10 for removing electricity, cleaning means 11, primary charger 3 arranged from the upstream side to the downstream side in the rotation direction of
And an image exposing means such as a laser beam scanner for forming an electrostatic latent image on the outer peripheral surface of the photosensitive drum 2 and an image exposing and reflecting means such as a polygon mirror.

The rotary developing device has a rotatable housing (hereinafter referred to as "rotating body") 4a, and is mounted in each of the rotating bodies 4a at a position facing the outer peripheral surface of the photosensitive drum 2. A yellow developing device 4Y, a magenta developing device 4M, and a cyan developing device 4C adapted to visualize (that is, develop) the electrostatic latent image formed on the outer peripheral surface of the photosensitive drum 2.
And a black developing device 4BK.

The sequence of the entire image forming apparatus having the above-mentioned configuration will be briefly described first by taking the case of the full color mode as an example.

When the photoconductor drum 2 described above rotates in the direction of the arrow shown in FIG. 8, the photoconductor on the photoconductor drum 2 is uniformly charged by the primary charger 3. When the primary charger 3 uniformly charges the photoconductor, image exposure is performed by the laser light E modulated by the yellow image signal of the document (not shown), and the electrostatic latent image is formed on the photoconductor drum 2. An image is formed, and the electrostatic latent image is developed by the yellow developing device 4Y that is previously set at the developing position by the rotation of the rotating body 4a.

On the other hand, the paper feed guide 4A and the paper feed roller 10
6. The transfer material conveyed through the paper feed guide 4b is held by the gripper 6 at a predetermined timing,
The transfer roller 8 is electrostatically wound around the contact roller 7 and an electrode facing the contact roller 7. The transfer drum 8 is rotating in the direction of the arrow shown in FIG. 8 in synchronism with the photosensitive drum 2, and the visible image developed by the yellow developing device 4Y is transferred to the outer peripheral surface of the photosensitive drum 2 and the transfer drum 8. The transfer charger 9 is in contact with the outer peripheral surface of the transfer charger 9.
Is transcribed. The transfer drum 8 continues to rotate and is ready for transfer of the next color (magenta in FIG. 8).

On the other hand, the photosensitive drum 2 is decharged by the decharging charger 10, cleaned by the cleaning means 11, and then recharged by the primary charger 3, and the above-mentioned image is formed by the next magenta image signal. Receive exposure. The rotary developing device rotates while the electrostatic latent image based on the magenta image signal is formed on the photoconductor drum 2 by the image exposure, so that the magenta developing device 4M is fixed at the predetermined developing position. Magenta development is performed.

Subsequently, the above-described processes are carried out for cyan and black, respectively, and when the transfer of four colors is completed, the four-color developed image formed on the transfer material is charged by each charger 10. , 13, the gripper 6 releases the grip of the transfer material, and the transfer material is separated from the transfer drum 8 by the separating claws 14 and sent to the fixing device 16 by the conveyor belt means 15 to remove heat. A series of full-color print sequences are fixed by the pressure, and the required full-color print image is formed.

Next, the toner powder used in this electrophotographic apparatus will be described.

Toner powder for a color electrophotographic apparatus is required to have good melting property and color mixing property when heat is applied, and has a low softening property and a sharp melting property toner having a short melting time. It is preferable. By using a sharp melt toner, it is possible to widen the color reproduction range of the copy and obtain a good color copy faithful to the multicolor image of the original.

Such a sharp-melt toner is obtained by melt-kneading, pulverizing and classifying a binder resin such as polyester resin or styrene-acrylic resin, a colorant (dye or sublimable dye), a charge control agent, etc. To manufacture.
If necessary, an external addition step of adding various external additives to the toner may be added.

As the color toner, it is particularly preferable to use a polyester resin as the binder resin in consideration of the fixing property and the sharp melt property. The sharp melt polyester resin is a polymer compound having an ester bond in the main chain of a molecule synthesized from a diol compound and a dicarboxylic acid, and its chemical formula is shown below.

[0018]

Embedded image In the chemical formula, R is an ethylene or propylene group, x and y are positive integers of 1 or more, and x
The average value of + y is 2 to 10. A bisphenol derivative represented by the above chemical formula or a substituted product thereof is used as a diol component, and a carboxylic acid component composed of a carboxylic acid having a valence of 2 or more or an acid anhydride thereof or a lower alkyl ester thereof (for example, fumaric acid, maleic acid, maleic anhydride). Acid, phthalic acid, terephthalic acid, trimellitic acid, pyromellitic acid, etc.) is more preferable because it has a sharp melting property.

The softening point of the sharp melt polyester resin is 60 to 150 ° C, preferably 80 to 120 ° C. FIG. 9 shows the softening characteristics of the toner containing the sharp melt polyester resin as the binder resin.

A flow tester CFT-500 type (manufactured by Shimadzu Corporation) was used, and the diameter of the die (nozzle) was 0.5 m.
m, thickness of 1.0 mm, extrusion load of 50 kg, initial temperature of 80 ° C., preheating time of 300 seconds, and constant temperature increase at a rate of 5 ° C./min. A curve (hereinafter referred to as a softened S-order curve) is obtained.

As the sample toner, fine powder finely weighed from 1 to 3 g is used, and the cross-sectional area of the plunger is 10 cm ² . The softened S-shaped curve becomes a curve as shown in FIG. As the temperature rises at a constant speed, the toner is gradually heated and starts to flow (plunger descent A → B). When the temperature is further raised, the toner in the molten state largely flows out (B → C → D), and the plunger lowering is stopped and completed (D → E).

The height H of the S-shaped curve indicates the total outflow amount, and the temperature T0 corresponding to the point C of H / 2 indicates the softening point of the toner.

This measuring method can be similarly applied to the measurement of the heat melting property of the binder resin or the resin itself for forming the second transparent resin layer.

Such a sharp melt type toner or resin has a temperature of T when the melt viscosity is 10 ⁵ cp.
When the temperature when 1,5 × 10 ⁴ cp is shown is T2, T
1 = 90 to 150 ° C., | ΔT | = | T1-T2 | = 5
A resin that satisfies the condition of 30 ° C.

The sharp-melting toner or resin having these temperature-melt viscosity characteristics is characterized in that the viscosity is extremely sharply reduced by heating. Such a decrease in viscosity causes appropriate mixing between the uppermost toner layer and the lowermost toner layer, and furthermore, the transparency of the toner layer itself is sharply increased, and good color reduction mixing is caused.

[0026]

When a full-color image is formed on a transparent film by using such a toner, a large amount of toner is used for image formation, and the toner is cooled and shrunk, so that the end portion is cooled. Curling occurs in the. For this reason, image blurring occurs due to film floating during projection.

After placing this on an OHP device and projecting it, image blurring occurs due to film lifting at the edge, which makes it very difficult to see as a projected image.

The present invention has been made to solve the above problems, and an object of the first to sixth inventions of the present invention is to print on the basis of the type of the recording medium to be fed. By controlling the image transferred to the medium to be a normal image or a mirror image, the original surface becomes the original mounting surface when the OHP original is placed, and the optimum transparent film output capable of preventing image blur during projection can be obtained. A color image processing apparatus, a color image processing method, and a method of projecting a transparent recording medium.

[0029]

According to a first aspect of the present invention, an electrostatic latent image formed on a photoconductor is developed for each color and transferred onto a recording medium to be fed so as to form a color image. In a possible color image processing apparatus, designation means for designating the type of the recording medium to be fed, and an image format formed on the photoconductor as a normal image or a mirror image based on the type designation state of the recording medium by the designation means. It has a setting means for setting and a control means for controlling the latent image formation on the photoconductor to a normal image or a mirror image based on the setting state of the setting means.

A second invention according to the present invention is a color image processing apparatus capable of forming a color image by developing an electrostatic latent image formed on a photoconductor for each color and transferring the electrostatic latent image onto a recording medium which is fed and superposed. A detection means for detecting the recording medium to be fed, a determination means for determining the type of the recording medium based on the detection result of the detection means, and a determination method for the recording medium type by the determination means Having a setting means for setting the image format formed on the photoconductor to a normal image or a mirror image, and a control means for controlling the latent image formation on the photoconductor to a normal image or a mirror image based on the setting state of the setting means. Is.

According to a third aspect of the present invention, the image format is set to a normal image or a mirror image based on designation means for designating the type of the recording medium to be fed and the state of the type designation of the recording medium by the designation means. Setting means, image reading means for reading the original image, storage means for storing the original image information read by the image reading means, and the original image information stored in the storage means based on the setting state of the setting means Read control means for controlling the reading direction of the document and image output means for outputting an image to a recording medium based on the document image information transferred from the read control means.

According to a fourth aspect of the present invention, a detection means for detecting the recording medium to be fed, and a determination means for determining the type of the recording medium based on the detection result of the detection means,
Image reading means for reading a document image; storage means for storing document image information read by the image reading means;
Based on the reading control means for controlling the reading direction of the document image information stored in the storage means based on the type determination result of the recording medium by the determination means, and based on the document image information transferred from the reading control means. And an image output unit that outputs an image to a recording medium.

A fifth aspect of the present invention is a color image processing for forming a color image by superposing and transferring an electrostatic latent image formed on a photoconductor onto a transmissive recording medium which is developed for each color and fed. In the method, a normal image electrostatic latent image is formed on the photoconductor when the feeding of the transparent recording medium is designated, and the normal image electrostatic latent image formed on the photoconductor is developed. Then, the image is transferred and fixed as a mirror image on the transparent recording medium.

According to a sixth aspect of the present invention, the original is placed by placing the fixing surface of the transparent recording medium, which is transferred and fixed as a mirror image to form a color image, on the original table surface of the original projection device so as to form a normal image. It is to project.

[0035]

BEST MODE FOR CARRYING OUT THE INVENTION

[First Embodiment] FIG. 1 is a schematic cross-sectional view illustrating the configuration of a color image processing apparatus according to the first embodiment of the present invention. The same parts as those in FIG. 8 are designated by the same reference numerals. .

In the figure, RCON is a reader controller, which is built in the reader unit RDR and is not shown in the figure.
It has an AM and a ROM, scans a scanning unit to read a document image placed on a document table, performs predetermined image processing, communicates with a printer controller PCON via an interface (not shown), and outputs the read image information. Forward. The printer controller PCON is a CPU, RA (not shown).
An M image and a ROM image are stored in the printer unit PRT, and the original image transferred from the reader unit based on the designation of the output medium type is directly or inverted and a normal image or a mirror image output to a recording medium including an OHP film is performed. . Further, SEN is a jam sensor that detects the recording medium fed by the feeding rollers 103 and 104. The reader unit includes the operation panel 600 shown in FIG.

FIG. 2 is a plan view showing an example of the operation panel 600 arranged in the reader unit RDR shown in FIG.

In the figure, a user mode key 601 is used by an operator (user) for setting machine specifications, standard mode and the like, cleaning, and the like. A cursor key 627 is used to select a setting item in the setting mode. Reference numeral 628 denotes an OK key which is used to confirm the setting contents in the setting mode. Reference numeral 606 denotes an all reset key, which is pressed to return to the standard mode. A copy start key (copy start key) 605 is pressed to start copying. A clear / stop key 604 has a clear key function during standby and a stop key function during copy recording. The clear key is also used to release the set number of copies. The stop key is pressed to interrupt continuous copying. After the copying at the time when this key is pressed is completed, the copying operation is stopped. A numeric keypad 603 is pressed when setting the number of copies. It is also used when setting the numerical setting mode. A memory key 619 allows the user to register modes that are frequently used. Here, M1 to M
4 modes can be registered. 611 and 612
Is a copy density key, which is pressed to manually adjust the copy density.

An AE key 613 is used to automatically adjust the copy density in accordance with the density of the original or AE key.
Press to cancel (automatic density adjustment) and switch density adjustment to manual (manual). A copy paper selection key 607 is pressed to select an upper paper lifter (tray) 102, a lower paper lifter (tray) 101, a paper deck (not shown), and a multi-manual feed. When a document is placed on an automatic document feeder (RDF) not shown, APS (automatic paper cassette selection) can be selected with this key 607. When APS is selected, a cassette having the same size as the original is automatically selected.

Reference numeral 610 denotes a unity magnification key, which is pressed to make a copy of the same size (original size). Reference numerals 609 and 608 are reduction / enlargement keys which are pressed to select reduction or enlargement of low-magnification scaling. An automatic scaling key 616 is pressed when the image of the document is automatically reduced or enlarged according to the size of the specified transfer sheet. Reference numerals 617 and 618 are sume keys, which are used when setting an arbitrary magnification. A double-sided key 626 is pressed to make double-sided copying from a single-sided original, double-sided copying from a double-sided original, or single-sided copying from a double-sided original. 6
A binding margin key 25 can create a binding margin of a specified length on the left, right, top, and bottom sides of the transfer sheet.

Reference numeral 624 is a photographic key, which is pressed when copying a photographic original. A multiple key 623 is pressed when an image is created (combined) on the same side of the transfer paper from two originals. A frame erasing key 621 is pressed when setting document frame erasing, sheet frame erasing, punch hole erasing, book frame erasing, and the like. A zoom program key 620 is for inputting the length on the original document and the length on the copy paper, calculating the magnification for the length, and pressing when copying at the copy magnification. 62
Reference numeral 9 is a cover mode setting key, which is used to create a front cover and a back cover
Also used when inserting interleaving paper.

Reference numeral 699 denotes an OHP key, which is depressed when outputting an original image as an recording medium on an OHP film. When the OHP key 699 is pressed, the reader controller RCON of the reader unit RDR gives a command to the printer controller PCON for the OHP film output mode.

A page continuous copy key 630 is used to continuously copy the left and right sides of a two-page spread book. Reference numeral 614 denotes a sheet discharge method selection key for selecting a staple sort, sort, and group discharge method. When the stapled sorter is connected to the sheet after recording, the staple sort mode, the sort mode, or the group mode is selected. The selection mode can be canceled. A folding key 615 is pressed to release or release the Z-folding mode and the half-folding mode.

Reference numeral 631 denotes a reservation key, which is used when starting the setting of a copy mode for a reserved document placed on a reservation tray (not shown) and when canceling the reservation setting. 632 is a slightly smaller key, which is used when using the slightly smaller mode. Reference numeral 633 denotes a guide key, which is used to display a description of a function corresponding to various keys on a message display.

Reference numeral 701 is an LC for displaying information regarding copying.
This is a D (liquid crystal) type message display (touch panel) for displaying characters and figures. For example, the number of copies set by the numeric keypad 603, the fixed size scaling keys 608, 6
09, the same magnification key 610, the copy magnification set by the zoom keys 617 and 618, the paper size selected by the paper selection key 607, a message indicating the state of the copying apparatus main body 100, a guide message indicating the operation procedure, and the setting contents of various other modes. Is displayed. An AE display 704 is turned on when AE (automatic density adjustment) is selected by the AE key 613. Reference numeral 709 denotes a preheating indicator, which is turned on when in a preheating state. Reference numeral 634 denotes an interrupt key, which is pressed to make an interrupt copy, and 635 is a personal identification key, which is pressed to set a personal identification mode.

The transparent film output processing in the color image processing apparatus according to the present invention will be described below with reference to the flow chart shown in FIG.

FIG. 3 is a flowchart showing an example of a transparent film output processing procedure in the color image processing apparatus according to the present invention. Note that (1) to (11) indicate each step.

First, the CP of the reader controller RCON
U determines whether or not the OHP key 699 of the operation unit has been pressed (1), and if YES, turns on the OHP mode (3) and issues a mirror image output instruction to the printer controller PCON.
To (4). Next, the printer controller PCON controls the image forming unit based on the document image information read from the reader unit RDR and subjected to predetermined image processing to form a normal electrostatic latent image on the photosensitive drum 2. The electrostatic latent image is developed by a color developing device and sequentially transferred as a mirror image onto the OHP film transferred onto the transfer drum 8, and the respective color images transferred by superimposition are fixed and discharged, and a mirror image is output ( 5).

On the other hand, in step (1), the OHP key 699
If it is determined that is not pressed, the OHP mode is turned off (2) and the normal copy mode is set (6). Next, when the copy button is turned on (7), the recording medium is fed, and at that time, the jam sensor SEN detects the jam of the fed recording medium (the sensor is turned off when the plain paper is detected). Is judged (8), Y
If it is ES, that is, if the recording medium is fed but the sensor does not detect the presence of the sheet, it is judged that the fed recording medium is an OHP film (9), and the process returns to step (4).

On the other hand, in step (8), when the sensor detects that there is paper, the recording medium is determined to be plain paper (10), the normal color image forming sequence is executed (11), and the process is ended.

As a result, if the original is to be output with the color trap film, the OHP film key 699 on the main body is pressed. In this case, when an image is formed by a digital copying machine, a mirror image image is formed by a known method as shown in FIG. 4 described later.

That is, when the reader unit RDR reads data for one scan from the line memory of the image signal of the original,
The mirror image output mode in which the reading order shown in FIG. 5 described later is performed from the reverse direction is automatically selected, and the mirror image in the main direction is set to O.
It is formed on an HP film (color OHP film (color trapene film) manufactured by Canon Inc.). Specifically, for example, a mirror image image is formed using a color OHP film with an image processing device such as CLC-550 manufactured by Canon Inc. When the color trapene film on which the mirror image is formed is used as a mirror image in a 088 type portable overhead projector manufactured by 3M, image blurring occurs due to film floating at the end.

Therefore, in order to project the image as a normal image, when the image is turned over and projected, the lifting of the edge portion is suppressed by the weight of the film and the image blur is eliminated, and a clear normal image is obtained up to the edge portion.

Similarly, a key 69 for OHP film
In order to form a mirror image without pressing 9, the jam sensor SEN in the main body of the digital copying machine first determines that it is a trapene film. Then, a mirror image was automatically formed by the same method as described above, and the color trapene film formed with the mirror image was turned over to the portable overhead projector and projected, and the same result was obtained.

If it is judged that the film is not a color trap film, a normal image is output. 4 is a schematic diagram for explaining a mirror image output formed by the color image processing apparatus shown in FIG. 1, and FIG. 5 is a diagram for explaining a configuration of the image memory in the reader controller shown in FIG. .

Correspondence between the present embodiment and each means of the third and fourth inventions and their functions will be described below with reference to FIG.

The third aspect of the present invention is based on the state of designation of the type of recording medium by the designation unit (key 699) for designating the type of recording medium to be fed.
ON) sets the image format to a normal image or a mirror image, the control means (reader controller RCO) based on the setting state.
N) is the storage means (R of the reader controller RCON)
The reading direction of the document image information stored in the image memory secured on the AM is controlled, and the image output means (printer unit PR) based on the read document image information.
Since T) outputs an image to a recording medium, the original surface becomes the original placement surface when the OHP original is placed from the read image of the original placed on the original table, and it is optimally transparent to prevent image blurring during projection. A film output can be obtained.

In a fourth aspect of the invention, the image reading means (reader unit RDR) determines the type of the recording medium based on the detection result of the detecting means (jam sensor SEN) for detecting the fed recording medium, Based on the type determination result, the read control means (reader controller RCON) controls the read direction of the document image information stored in the storage means (image memory secured on the RAM of the reader controller RCON), and the read is performed. Since the image output means (printer unit PRT) outputs the image to the recording medium based on the document image information, when the user feeds a recording medium such as an OHP film without specifying the type of the recording medium, From the read image of the original placed on the original table, when the OHP original is placed, the original surface becomes the original placing surface, which is the optimum transparent area that prevents image blurring during projection. It is possible to obtain a film output.

Second Embodiment In the first embodiment, the case where the reader unit RDR and the printer unit PRT communicate with each other to process a document image has been described as an example, but as shown in FIG. In addition, the present invention can be applied to an analog image processing device. Hereinafter, the embodiment will be described.

FIG. 6 is a schematic sectional view for explaining the structure of the color image processing apparatus showing the second embodiment of the present invention. Although there is one developing unit for the sake of explanation, a plurality of developing units are provided. 7 is a block diagram for explaining the control configuration of the color image processing apparatus shown in FIG. 6, and the same components as those in FIG. 6 are designated by the same reference numerals.

In FIG. 6, reference numeral 50 is a main body, and 51 and 52 are paper feed cassettes for accommodating recording media. A developing unit 53 visualizes the electrostatic latent image formed on the photosensitive drum 54 with each color developer. A feeding belt 55 feeds the recording medium on which the image transfer is completed to the fixing device 56.

Reference numeral 57 is a platen glass on which a document is placed. Reference numerals 58 to 61 denote scanning mirrors, which are scanning mirrors 58 and 60.
When OHP output is selected on the operating unit (not shown),
When the jam sensor SEN detects the feeding of the OHP film, it moves in the directions of the arrows a and b, and the photosensitive drum 54
The electrostatic latent image formed on is switched from a mirror image to a normal image. In addition,
By a timing roller (not shown), the cassettes 51, 5
The recording medium fed from No. 2 is temporarily stopped, a feeding jam or the like is detected, and if the detection result is an OHP film, the scanning mirrors 58 and 60 are arranged at the normal image forming position with respect to the drum. The color image forming sequence is CP
It is controlled by a controller unit 62 including U, RAM and ROM. Further, SEN is a jam sensor that detects a recording medium fed from the paper feed cassettes 51 and 52.
Note that the operation unit (not shown) is provided with the key 699 shown in FIG.

In this case, when instructing the output of the original document to the OHP film, the key 699 of the operation unit is pressed. At this time, a mirror image can be formed by reducing the number of mirrors of the optical system for forming a normal image by one. This will be described in detail with reference to FIG. 7. First, the scanning mirror 58 shown in FIG. 6 rotates in the direction of arrow a, and the scanning mirror 60 moves in the direction of arrow b so as to match the optical path length, and then rotates. A printing mechanism 64 forms a positive image on the photosensitive drum 54. The optical path is in the direction of the broken line in the figure.

As a result, a mirror image image is formed on the OHP film. When the OHP film on which the mirror image was formed was projected by the same method as in the first embodiment, the same result was obtained.

Here, the correspondence between the present embodiment and the fifth and sixth inventions will be described with reference to FIGS.

A fifth aspect of the present invention utilizes the color image processing apparatus shown in FIG. 1 to develop an electrostatic latent image formed on a photosensitive member for each color and superimpose it on a transmissive recording medium fed. In the color image processing method of forming a color image by means of the above method, when feeding of the transparent recording medium is designated (step (3) in FIG. 3), a normal electrostatic latent image is formed on the photoconductor. (Step (5) in FIG. 3), the electrostatic latent image of the normal image formed on the photoconductor is developed and transferred and fixed as a mirror image on the transparent recording medium (Step (5) in FIG. 3). It is possible to create a document that can cancel the influence of the curl surface at the time of projection by the document projection device (OHP not shown).

According to a sixth aspect of the present invention, the fixing surface of a transparent recording medium on which a color image is formed by being transferred and fixed as a mirror image is placed on the original table surface of an original projection device (OHP not shown) so as to form a normal image. Since the original is projected, it is possible to project an image in which the influence of the curl surface is canceled at the time of projection.

Similar to the first embodiment, even in the case of the analog copying machine, if the jam sensor SEN of the main body 50 detects that the OHP film is the OHP film without pressing the OHP film key 699, the same method is used. To form a mirror image,
The color trapene film that formed the mirror image is the first
When projection was performed by the same method as that of the embodiment, the same result as that of the first embodiment was obtained. Further, when it is determined that the film is not an OHP film, the optical path is the same as the solid line direction in FIG.

Correspondence between the present embodiment and each means of the first and second inventions and their functions will be described below with reference to FIG. 6 and the like.

A first invention is a color image processing apparatus (main body 5) capable of forming a color image by developing an electrostatic latent image formed on a photosensitive member for each color and transferring it onto a recording medium fed.
In 0), the image format formed on the photoconductor by the setting unit (controller unit 62) is a normal image based on the state of specifying the type of the recording medium by the specifying unit (key 699) for specifying the type of the recording medium to be fed. Alternatively, a mirror image is set, and the control means (controller unit 62) controls the latent image formation on the photoconductor to a normal image or a mirror image based on the set state,
When an OHP original is placed from an original based on the original placed on the original table, the original surface becomes the original placing surface, and it is possible to obtain an optimum transparent film output capable of preventing image blur during projection.

According to the second invention, a color image processing apparatus (main body) capable of forming a color image by developing the electrostatic latent image formed on the photosensitive member for each color and transferring it onto the recording medium fed to be superposed thereon. In 50), the determination unit (controller unit 62) determines the type of the recording medium based on the detection result of the detection unit (jam sensor SEN) that detects the fed recording medium, and based on the type determination result. And a setting unit (controller unit 62) sets the image format formed on the photoconductor to a normal image or a mirror image, and based on the setting state, the control unit (controller unit 62) forms a latent image on the photoconductor to a normal image. Alternatively, since the image is controlled to be a mirror image, when the user feeds a recording medium such as an OHP film without designating the type of the recording medium, the document based on the document placed on the platen is read from the document.
When the P document is placed, the document surface becomes the document placement surface, and it is possible to obtain an optimum transparent film output that can prevent image blurring during projection.

[0072]

As described above, the first embodiment according to the present invention is described.
According to another aspect of the invention, in the color image processing apparatus capable of forming a color image by developing the electrostatic latent image formed on the photoconductor for each color and transferring it onto the recording medium to be fed, the recording to be fed. The setting unit sets the image format formed on the photoconductor to the normal image or the mirror image based on the designation state of the recording medium by the designation unit that designates the type of medium, and the control unit controls the photoconductor based on the set state. Optimum for controlling the latent image formation to the normal image or the mirror image to prevent the image blur at the time of projection from the original based on the original placed on the original plate when the OHP original is placed and the original surface becomes the original placement surface. It is possible to obtain a clear transparent film output.

According to the second aspect of the invention, in the color image processing apparatus capable of forming a color image by developing the electrostatic latent image formed on the photoconductor for each color and transferring the developed image onto the recording medium to be fed, The determination unit determines the type of the recording medium based on the detection result of the detection unit that detects the fed recording medium, and the setting unit determines the image format formed on the photoconductor based on the type determination result. An image or a mirror image is set, and the control means controls the latent image formation on the photoconductor to a normal image or a mirror image based on the set state, so that the recording medium such as an OHP film is not specified by the user. When the paper is fed, the OH from the original based on the original placed on the platen
When the P document is placed, the document surface becomes the document placement surface, and it is possible to obtain an optimum transparent film output that can prevent image blurring during projection.

According to the third invention, when the setting means sets the image format to the normal image or the mirror image based on the state of specifying the type of the recording medium by the specifying means for specifying the type of the recording medium to be fed, the setting state is set. Based on the control means controls the reading direction of the document image information stored in the storage means,
Since the image output means outputs an image to the recording medium based on the read original image information, the original surface becomes the original placement surface when the OHP original is placed from the read image of the original placed on the original table. It is possible to obtain an optimum transparent film output that can prevent image blurring during projection.

According to the fourth aspect of the invention, the image reading means determines the type of the recording medium based on the detection result of the detection means for detecting the fed recording medium, and the read control is performed based on the type determination result. Means controls the reading direction of the document image information stored in the storage means, and the image output means outputs an image to a recording medium based on the read document image information. Therefore, the user selects the type of the recording medium. If you feed a recording medium such as OHP film without specifying it,
From the read image of the original placed on the original table, when the OHP original is placed, the original surface becomes the original placing surface, and it is possible to obtain the optimum transparent film output capable of preventing image blur during projection.

According to the fifth aspect of the present invention, there is provided a color image processing method for forming a color image by developing an electrostatic latent image formed on a photosensitive member for each color and transferring the electrostatic latent image onto a transmissive recording medium which is fed and superposed. When the feeding of the transparent recording medium is designated, an electrostatic latent image of a normal image is formed on the photoconductor, and the electrostatic latent image of the normal image formed on the photoconductor is developed. Since the image is transferred and fixed as a mirror image onto the transparent recording medium, it is possible to create a document that can cancel the influence of the curl surface during projection by the document projection device.

According to the sixth aspect of the invention, the fixing surface of the transparent recording medium, which is transferred and fixed as a mirror image to form a color image, is placed on the original table surface of the original projection device so as to form a normal image, and the original is projected. Therefore, it is possible to project an image in which the influence of the curl surface is canceled at the time of projection.

[Brief description of drawings]

FIG. 1 is a schematic cross-sectional view illustrating the configuration of a color image processing apparatus showing a first embodiment of the invention.

FIG. 2 is a plan view showing an example of an operation panel arranged in the reader section shown in FIG.

FIG. 3 is a flowchart showing an example of a transparent film output processing procedure in the color image processing apparatus according to the present invention.

FIG. 4 is a schematic diagram illustrating a mirror image output formed by the color image processing apparatus shown in FIG.

5 is a diagram illustrating a configuration of an image memory in the reader controller illustrated in FIG.

FIG. 6 is a schematic cross-sectional view illustrating the configuration of a color image processing device showing a second embodiment of the invention.

7 is a block diagram illustrating a control configuration of the color image processing apparatus shown in FIG.

FIG. 8 is a schematic cross-sectional view illustrating the configuration of a color image processing apparatus applicable to this type.

FIG. 9 is a diagram showing softening characteristics of a toner containing a sharp melt polyester resin used as a binder resin, which is used in a color image processing apparatus applicable to this type.

[Explanation of symbols]

 RCON reader controller PCON printer controller SEN jam sensor RDR reader unit PRT printer unit

Continued on the front page (51) Int.Cl. ⁶ Identification number Agency reference number FI Technical display location H04N 1/60 H04N 1/40 D 1/46 1/46 Z

Claims (6)

[Claims] 1. A color image processing apparatus capable of forming a color image by superposing and transferring an electrostatic latent image formed on a photoconductor onto a recording medium which is developed by color and is fed. Specifying means for specifying the type of the recording medium, and setting means for setting the image format formed on the photoconductor to a normal image or a mirror image based on the type specifying state of the recording medium by the specifying means,
A color image processing apparatus comprising: a control unit that controls a latent image formation on the photoconductor to a normal image or a mirror image based on a setting state of the setting unit. 2. A color image processing apparatus capable of forming a color image by developing an electrostatic latent image formed on a photoconductor for each color and transferring it onto a recording medium to be fed so as to form a color image. Detection means for detecting the medium, determination means for determining the type of the recording medium based on the detection result of the detection means, and image format formed on the photoconductor based on the determination result of the recording medium type by the determination means A color image processing apparatus comprising: setting means for setting a normal image or a mirror image; and control means for controlling the latent image formation on the photoconductor to a normal image or a mirror image based on the setting state of the setting means. . 3. A designation unit for designating a type of a recording medium to be fed, a setting unit for setting an image format to a normal image or a mirror image based on a designation state of the type of the recording medium by the designation unit, and a document image is read. Image reading means, storage means for storing document image information read by the image reading means, and read control for controlling the reading direction of the document image information stored in the storage means based on the setting state of the setting means. A color image processing apparatus comprising: a means and an image output means for outputting an image to a recording medium based on the document image information transferred from the read control means. 4. A detection unit that detects a recording medium to be fed, a determination unit that determines the type of the recording medium based on a detection result of the detection unit, an image reading unit that reads an original image, and the image. Storage means for storing the document image information read by the reading means; read control means for controlling the reading direction of the document image information stored in the storage means based on the type determination result of the recording medium by the determination means; An image output unit for outputting an image to a recording medium based on the document image information transferred from the read control unit. 5. A color image processing method for forming a color image by superposing and transferring an electrostatic latent image formed on a photoconductor onto a transmissive recording medium which is developed by color and fed. Is specified, an electrostatic latent image of a normal image is formed on the photoconductor, and the electrostatic latent image of the normal image formed on the photoconductor is developed to form the transparent recording medium. A color image processing method characterized in that the image is transferred and fixed as a mirror image. 6. A transmissive transmission, characterized in that the transmissive recording medium on which a color image is formed by transfer and fixing as a mirror image is placed on the original table surface of the original projecting device so as to form a normal image, and the original is projected. Projection method for recording media.