JPH01116674A - Picture recorder - Google Patents

Abstract

PURPOSE:To prevent an erroneous picture recording by prohibiting a processing with a picture recording area designating member and an interrupting means when the picture recording of a positive is instructed from a positive picture. CONSTITUTION:In the case of a positive-positive mode, a masking function is cleared, namely, while cursors 35a, 35b, 36a, and 36b and sliding shutters 47a and 47b are moved to their initial positions, the input of a cursor operating key is not accepted. In other words, when a positive printing is executed from the positive picture, together with executing the clearing of the masking function, the masking is prohibited. Thus, it can be prevented that a part, at which a scanning light is cut, is printed black, and an erroneous printing can be prevented.

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial Application Field) The present invention relates to an image recording device that records an image projected on a projection screen onto a recording medium by electrophotography.

(Prior Art) A microfilm reader printer is known as a means for recording information recorded on microfilm onto a recording medium. This microfilm reader printer enlarges and projects the information recorded on microfilm onto a projection screen, and records the image projected on the screen onto a recording medium using electrophotography (/X-tocopy). However, a single sheet of microfilm may contain information other than the necessary information.

However, with the above-described apparatus, it was not possible to record only the necessary images from among the images projected on the projection screen onto the recording medium.

Therefore, the cursor provided on the projection screen is moved using the cursor keys, the required recording range is indicated, the shutter mechanism is moved in accordance with the movement of the cursor, and the shutter mechanism exposes the photoreceptor drum. A method is being considered that performs recording in the above-mentioned recording range by blocking light (masking function).

However, since the above masking function masks the scanning light by cutting it, there is no problem when obtaining a positive print from a negative image, but when obtaining a positive print from a positive image, the cut portion is printed black. There was a problem with putting it away.

Therefore, when obtaining a positive print from a positive image, there is a problem in that an incorrect print is made.

(Problems to be Solved by the Invention) As described above, the present invention eliminates the drawback that erroneous image recording is performed when obtaining a positive image record from a positive image. An object of the present invention is to provide an image recording device that can prevent erroneous image recording when obtaining image recording.

[Structure of the Invention] (Means for Solving the Problems) The image recording device of the present invention includes a projection screen, a projection means for projecting an image onto the projection screen, and a band by scanning projection light from the projection means. an exposure means for exposing an electrified image carrier with scanning light; a first developing means for regularly developing an electrostatic latent image formed on the image carrier by the exposure means; A second developing means for reversing and developing an electrostatic latent image formed on the body; an instructing means for instructing recording of a positive image from a negative image; or an instructing means for instructing recording of a positive image from a positive image; If recording of a positive image from a negative image is instructed, development is performed using the first developing means, and if recording of a positive image is instructed from a positive image, development is performed using the second developing means. means for performing the above first or second
a transfer means for transferring the visualized image formed on the image carrier by the developing means to a recording medium; a transfer means for moving in the horizontal and vertical directions of the projection screen to designate a recording area of the image projected on the screen; An image recording area specifying member, a blocking means for blocking the scanning light exposed on the image carrier according to the amount of movement of the image recording area specifying member, and an instruction to record a positive image from one positive image to another by the above-mentioned instruction means. In this case, the image recording area designating member and a prohibiting means for prohibiting processing by the blocking means are provided.

(Function) This invention provides an image recording area specifying member for specifying a recording area of an image projected on a projection screen, and an exposure means that exposes the image carrier according to the amount of movement of the image recording area specifying member. In devices that block the scanning light from
Processing by the image recording area specifying member and the blocking means is prohibited.

(Example) An embodiment of the present invention will be described below with reference to the drawings.

FIG. 2 is a schematic cross-sectional view of a microfilm reader printer according to the present invention. an image forming section 3 for copying the film image projected onto the projection screen 1 onto a recording medium; and a projection section 3 for guiding and scanning the projection light from the projecting section 2 on the image forming section 3. It consists of a light guide scanning section 4 and a film setting section 5 for setting this micro.

The film setting section 5 includes a projection light source 6, a Fresnel lens 7 and a film holding plate 8 disposed above the light source 6, and directs the light source light from the light source 6 to the film through the Fresnel lens 7. A microfilm (not shown) held between presser plates 8 is irradiated with the light. The projection section 2 includes a lens holder section 9 provided above the film holding plate 8 and a screen projection section 10 provided behind the projection screen 1. ) is guided to the projection screen 1 via the lens holder section 9 and the screen projection section 10.

An objective lens 11 and a prism 12 are held in the lens holder section 9, and a film image projected onto the projection screen 1 can be focused by moving the objective lens 11 in the optical axis direction of the projection light. It has become.

Further, the prism 12 is rotatably held by the lens holder section 9, and by rotating the prism 12 by 180 degrees around the optical axis of the projection light, the projection screen 12 is rotated.
The projected image can be reversed.

The screen projection section 10 consists of a movable mirror 13 and first and second fixed mirrors 14.15, and the projection light that has passed through the lens holder section 9 is reflected by the first and second fixed mirrors 14.15. The microfilm is enlarged and projected onto a projection screen 1.

Here, when the microfilm is projected on the projection screen 1, the movable mirror 13 is located outside the optical path of the projection light as shown by the imaginary line in the figure, and is connected from the lens holder section 9 to the first fixed mirror 14. It is designed so as not to obstruct the projection light entering the.

When copying a film image projected on the projection screen 1 to a recording medium, the lens is positioned on the optical path of the projection light as shown by the solid line in the figure, and the projection light from the lens holder section 9 is guided and scanned. The unit 4 includes third to fifth fixed mirrors 16, 17, and 18, and the projection light from the movable mirror 13 is reflected by the fixed mirrors 16, 17, and 18 and irradiated onto the photosensitive drum 20 of the image forming unit 3. It looks like this.

That is, in this embodiment, the film setting section 5 and the first and second fixed mirrors 14 and 15 of the projection section 2 constitute a projection means, and the movable mirror 13 of the projection section 2 and the projection light guide scanning section 4 constitute a projection means. constitutes the exposure means.

The image forming section 3 has a photosensitive drum 20 as an image bearing member located approximately in the center of the main body 19 of the image forming section. (developing means) 22, reversal developing device (second developing means) 2
3. Transfer charger 24, peeling charger 25, cleaning device 2
6 and a static elimination lamp 27 are arranged along the rotational direction of the photosensitive drum 20 (arrow a in the figure).

゛Also, at the bottom of the main body 19, there is a sheet of paper P, which is a recording medium taken out from the paper feed cassette 28 by the paper feed roller 29.
a paper conveyance path 30 for guiding the paper to a paper discharge tray 34 through an image transfer section between the photoreceptor drum 20 and the transfer charger 24;
A registration roller 31 is provided on the upstream side of this conveyance path 30, and a heat roller 32 and a paper discharge roller 33 as a fixing device are provided on the downstream side.

On the other hand, as shown in FIGS. 3(a) and 3(b), on the projection screen 1, there is a teno cursor 35 a as an image recording area designation member for designating the recording area (hatched area in the figure) of the projected image.
, 35 b , 36 a , and 36 b are provided in pairs in each of the horizontal and vertical directions of the projection screen 1 .

These pair of cursors 35 a s 35 b 53
6a and 36b are the projection screen 1 as shown in FIG.
A guide shaft 37 provided in the horizontal and vertical directions.
38, and are adapted to be driven by pulse motors 41, 42 via timing belts 39, 40, respectively.

At the right end of the guide shaft 37 (see FIG. 4), there are initial positions (home positions) of cursors 35a and 35b.
A microswitch 81 is provided as a detection means for detecting.

For example, when the cursor 35a reaches the initial position, the microswitch 81 is turned on by the carriage portion 83 of the cursor 35a.

A microswitch 82 is provided at the lower end of the guide shaft 38 (see FIG. 4) as a detection means for detecting the initial positions of the cursors 36a and 36b.

For example, when the cursor 36b reaches the initial position, the microswitch 82 is turned on by the carriage portion 84 of the cursor 36b.

Further, above the photoreceptor drum 20, a shutter device 43 serving as a light shielding means is provided in the vicinity of the photoreceptor drum 20. As shown in FIG. 5, this shutter mechanism 43 consists of a slide shutter mechanism 44 and a full-face shutter mechanism 45 as shown in FIG.
35b.

The scanning light from the projection light guide scanning section 4 is blocked depending on the amount of movement of the projection light guide scanning section 36a and 36b.

The slide shutter mechanism 44, as shown in FIG.
Scanning light slit 4 formed in the image forming unit main body 19
A pair of slide shutters (side shutters) 47a that slide in the width direction of 6.

47b, a rack and pinion mechanism 48 that slides the slide shutters 47a and 47b, and a pulse motor 49 that drives the rack and pinion mechanism 48.
The amount of movement of the cursors 35a and 35b (pulse motor 4
The slide shutters 47a, 4 according to the number of steps (1)
It is designed to slide 7b.

A detection body 91 is provided on one pinion 48a of the rack and pinion mechanism 48. Further, a microswitch 92 is provided near the pinion 48 as a detection means for detecting the initial position of the pinion 48a, that is, the initial position of the slide shutter 47a.

For example, the pinion 48a1, that is, the slide shutter 4
When 7a reaches the initial position, the detection body 91 turns on the microswitch 92.

In addition, the entire surface shutter mechanism 45, as shown in FIG.
It consists of a full-surface shutter 50 that opens and closes the scanning light slit 46, a link mechanism 51 that opens and closes this full-surface shutter 50, and a solenoid 52 that drives this link mechanism 51. Full-screen shutter 50 depending on the number of steps)
is designed to open and close.

Reference numeral 53 in the figure is an operation panel for performing microfilm projection and copying operations, and on this operation panel 53, as shown in FIG. 56, negative-positive (
N-P) mode key 57a, positive-positive (p-p) mode key 57b1 automatic exposure key 58, five exposure adjustment volumes, copy density adjustment volume 60, cursor operation keys 61a, 61b, 61c, 61d, cursor speed switching key 62 a 162 b s A power saving key 71, a display section 63, etc. are provided.

The cursor operation keys 61a, 61b, 61c.

61d is cursor 35 a s 35 b % 36
a-.

36b in the horizontal and vertical directions of the projection screen 1, and the cursor speed switching keys 62a, 62b move the cursors 35a, 135b, 36a, 3
This is for switching the moving speed of 6b between high speed mode and low speed mode.

The negative-positive mode key 57a instructs to perform a positive print from a microfilm containing a negative image, and the positive-positive mode key 57b instructs to perform a positive print from a microfilm containing a positive image.

FIG. 8 is a circuit diagram showing the control section of the microfilm league printer, and 64 in the figure is a microprocessor (MPU) as the main control section. The main control section 64 is connected to various operation keys on the operation panel 53, a switching circuit 77 for switching between the regular developer 22 and the reversal developer 23, and the microswitches 82, 83, and 92, as well as the driver 73. 74, 75, 76, the pulse motor 41, 42, 49 and the solenoid 52 are connected,
Furthermore, an exposure amount control section 72 is connected to adjust the amount of light from the light source 6 in accordance with the amount of light corresponding to the density of the original.

The main control section 64 controls the negative-positive mode key 57.
When a is input and the negative-positive mode is entered, development using the regular developer 22 is selected, and when the positive-positive mode key 57b is input and the positive-positive mode is entered, development using the reversal developer 23 is selected. You get to choose.

When the main control section 64 switches from the negative-positive mode to the positive-positive mode, the masking function is cleared, that is, the cursors 35a and 35b are activated.

36a, 36b and slide shutter 47a147b
(move to initial position, home position), and press the cursor operation keys 61a, 61b,
Inputs from 61c and 61d are not accepted.

The switching circuit 77 switches between the regular developing device 22 and the reversal developing device 23 to perform the development. Switching is performed by moving the developing device toward and away from the body drum 20 (by moving the developing device itself), or by applying a developing bias.

Next, the operation of the above configuration will be explained with reference to the flowchart shown in FIG.

For example, a case will be described in which only a desired image from among the images projected on the projection screen 1 is recorded on the paper P in the negative-positive mode (masking function). First, the negative/positive mode key 57a on the operation panel 53 is input. Then, the main control section 64 determines the negative/positive mode, and causes the rotating sleeve (not shown) of the regular developing device 22 to correspond to the photosensitive drum 20 by switching the switching circuit 77 .

Next, press the cursor operation keys 61a~ on the operation panel 53.
61d to move the cursors 35a, 135b, 36a, 3
6b is moved to the image area (hatched area in the figure) to be recorded, as shown in FIG. 3(b). At this time, if the cursor speed switching key 62a is pressed, the cursor 35a,
35b.

The movement speed of 36a and 36b switches to high speed mode,
Furthermore, since the cursor speed switching key 62b is pressed to switch to the low speed mode, the recording area can be specified quickly and accurately.

Also, the cursors 35a, 35b, 36a.

36b moves a predetermined amount, the main control unit 64 changes the number of steps of the pulse motors 41 and 42 (stored in a memory not shown).
The unnecessary image area (portion other than the diagonal line) is determined from the cursor 35 a -35b s 36 a .

Slide shutter 47a147 according to the amount of movement of 36b
b is slid, and the entire surface shutter 50 is controlled to open and close. As a result, the photosensitive drum 2 of the image forming section 3
0 is exposed only to the scanning light of the image area designated by the cursors 35a, 135b, 36a, and 36b.

Next, after specifying the recording area of the image projected on the projection screen 1 with the cursors 35a, 35b, 36a136b, and pressing the copy start key 54 on the operation panel 53, the photosensitive drum 20 moves in the direction of the arrow a in the figure. While being driven, the movable mirror 13 moves from the position shown by the imaginary line in the figure to the position shown by the solid line, and scans the projection light from the lens holder part 9 to the projection light guide scanning part 4.

Then, the photoreceptor drum 20 is uniformly charged by the charging device 21, and the photoreceptor drum 20 is exposed to scanning light from the projection light guide scanning unit 4, so that an electrostatic latent image is formed on the surface of the photoreceptor drum 20. is formed. This electrostatic latent image is transferred to the regular developer 22.
The image is visualized and becomes a toner image.

On the other hand, the paper P taken out from the paper feed cassette 28 by the paper feed roller 29 is sent to the image transfer section between the photosensitive drum 20 and the transfer charger 24 by the registration roller 31.
The toner image is transferred by the transfer charger 24 .

Then, the paper P on which the toner image has been transferred is peeled off from the photoreceptor drum 20 by a peeling charger 24, and after the transferred image is melted and fixed by a heat roller 32, it is discharged from a paper discharge roller 33 to a paper discharge tray 34. be done.

Note that after the toner image is transferred to the paper P, the residual image on the photosensitive drum 20 is erased by the cleaning device 26 and the static elimination lamp 27, in preparation for the next copying.

Thereafter, the set number of recordings will be made continuously.

Next, a case will be described in which the positive-positive mode is selected in the negative-positive mode.

That is, in the negative-positive mode, the positive-positive mode key 57b on the operation panel 53 is input. Then, the main control unit 64 determines that the negative-positive mode is to be switched to the positive-positive mode, and by switching the switching circuit 77, the rotating sleeve (not shown) of the reversal developing unit 23 is made to correspond to the photosensitive drum 20, and regular development is performed. The rotating sleeve (not shown) of the container 22 is separated from the photoreceptor drum 20. The main control unit 64 also clears the masking function and does not accept input from the cursor operation keys 61a to 61d.

To clear the above masking function, use the cursor 3 above.
5a, 35b, 36a, 36b and slide shutters 47a, 47b are moved to their initial positions. That is, the main controller 64 drives the pulse motors 41, 42, 49 to control the cursors 35a, 35b, 36a,
36b and the slide shutters 47a, 47b are moved toward the initial position.

Then, when a detection signal is supplied from each detector 81, 82, 92, the main control unit 64 moves the cursor 35a, 35bs
36as 36bs and slide shutter 47a, 4
7b to the initial position, each pulse motor 41
．． 42. Stop 49.

After this, an operation similar to the printing operation in the negative-positive mode described above is performed. However, development is performed using the reversal developing device 23 as a developing device, and the masking function is prohibited.

Furthermore, when the above-mentioned positive-positive mode key 57b is input and the above-mentioned masking function is cleared,
Switch to the reversal developing device 23 and press the cursor operation key 6.
It simply does not accept inputs from 1a to 61d.

As described above, in the negative-positive mode, the cursor 35a s 35b s 36a 536b for specifying the recording area of the image projected on the projection screen 1 is provided movably in the horizontal and vertical directions of the projection screen 1. , the cursors 35a, 35b, 36
By providing a shutter mechanism 43 that blocks the scanning light exposed to the photoreceptor drum 20 according to the amount of movement of the photoreceptor drums 20a and 36b, only the necessary images from among the images projected on the projection screen 1 are displayed on the paper P. can be recorded.

Also, clear the masking function in case of positive positive mode, that is, cursor 35 a % 35 b % 36
a s 36 b s and slide shutter 47a
147b is moved to the initial position, and inputs from the cursor operation keys 61a to 61d are not accepted. As a result, when performing positive printing from a positive image, the masking function is cleared and
Masking is now prohibited. Therefore, the portion where the scanning light is cut off by masking is prevented from being printed in black, and erroneous printing can be prevented.

In the above embodiment, the masking function was described as an image forming mechanism for only a predetermined area, but the present invention is not limited to this, and a trimming function may also be used.

Further, the present invention can also be applied to image recording devices other than microfilm reader/binder printers.

[Effects of the Invention] As described in detail above, according to the present invention, it is possible to provide an image recording apparatus that can prevent erroneous image recording when obtaining a positive image recording from a positive image.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, and FIG. 1 is a flowchart for explaining the main parts of the operation, and FIG. 2 is a sectional view showing the schematic configuration of a microfilm reader printer.
3(a) and 3(b) are front views showing the projection screen, FIG. 4 is a perspective view showing the structure of the cursor, FIG. 5 is a perspective view showing the structure of the side shutter mechanism, and FIG. 6 is a front view showing the entire shutter mechanism. 7 is a plan view showing the structure of the operation panel, and FIG. 8 is a block diagram showing the structure of the control circuit. DESCRIPTION OF SYMBOLS 1... Projection screen, 2... Projection section, 3... Image forming section, 4... Projection light guide scanning section, 5... Film setting section, 6... Light source, 20... photosensitive drum,
22nd century developer, 23rd... Hanten developer, 35a
, 35b. 36a, 36b...Cursor (image recording area designation member), 43...Shutter device, 44...Slide shutter mechanism, 45...Full surface shutter mechanism, 47a. 47b...Slide shutter, 53...Operation panel, 57a...Negative-positive mode key, 57b...Positive-positive mode key, 61a-61d...Cursor operation key, 63...Display section, 64... Main control unit, 77
...Switching circuit, 81.82.92...Detector. Applicant's agent Patent attorney Takehiko Suzue Figure 1 (a) (b) Figure 3 Figure 6

Claims (2)

[Claims] (1) A projection screen, a projection means for projecting an image onto the projection screen, an exposure means for scanning the projection light from the projection means and exposing the charged image carrier with the scanning light, and the exposure means a first developing means for regular development of the electrostatic latent image formed on the image bearing member by the exposure means; and a second developing means for reversing developing the electrostatic latent image formed on the image bearing member by the exposure means. means for instructing recording of a positive image from a negative image, or instructing recording of a positive image from a positive image, and when the instruction means instructs recording of a positive image from a negative image, a means for performing development using the second developing means when a positive image is instructed to be recorded from a positive image; and a means for performing the development using the second developing means; a transfer means for transferring the visualized image formed on the image carrier to a recording medium; and an image recorder for moving in the horizontal and vertical directions of the projection screen to designate a recording area of the image projected on the screen. an area specifying member; a blocking means for blocking the scanning light exposed on the image carrier according to the amount of movement of the image recording area specifying member; and when the above-mentioned instruction means instructs to record an image from positive to positive; An image recording apparatus comprising the above-mentioned image recording area specifying member and prohibiting means for prohibiting processing by the blocking means. (2) The image recording apparatus according to claim 1, wherein the image recording area specifying member and the blocking means are returned to their initial positions when prohibited by the prohibiting means.