JP2840251B2 - Microfilm reader printer - Google Patents

Description

Description: FIELD OF THE INVENTION The present invention relates to a microfilm reader printer that displays an image of a microfilm on a screen, reads this image with an image sensor, and can output the print. Things.

(Technical Background of the Invention) A microfilm reader printer having a mask means for projecting an image of a microfilm onto a screen, designating a required image area while viewing the screen, and outputting the designated image area to a printer is known. There is also known an image processing apparatus that includes trim means for removing a black frame appearing on the outer periphery of an image. Here, there is a technology of mask / trim means (hereinafter simply referred to as mask means) in which the coordinates on the screen are input numerically from a keyboard by looking at a scale attached to each side of the screen. However, in this method, the input operation is troublesome. there were. Also, when changing the print magnification, the printing range changes, so the operation is more troublesome. On the other hand, there has been proposed a method in which a cursor is prepared which moves along two orthogonal sides on a screen, and a print range is inputted by moving these cursors by hand (for example, Japanese Patent Laid-Open No.
61-154356). However, in this case, it is necessary to separately provide a large number of scales and their position detection sensors, and there is a problem that the number of parts increases and the structure becomes complicated.

(Object of the Invention) The present invention has been made in view of such circumstances,
It is an object of the present invention to provide a microfilm reader printer in which a print range can be easily specified and the structure can be extremely simplified.

(Constitution of the Invention) According to the present invention, an object of the present invention is to enable an image of a microfilm projected on a screen to be read by an image sensor and output to a printer without changing the projection magnification of the projected image on the screen. In a microfilm reader printer capable of changing a magnification, an input means for inputting a print range and a print magnification and setting a mask range not requiring printing, and displaying the screen on the screen along two orthogonal sides of the screen. Display means for displaying a print range corresponding to the projected image; and a display area corresponding to the print magnification set by the input means as a corresponding area on a screen, wherein the display area is displayed on the display means, and the mask area is printed. Conversion means for displaying the display in a manner distinguishable from the display of the range; Mask means for extracting the output signal of the print range from the output signal of the image sensor; and scaling means for scaling the output signal of the image sensor to a set print magnification. This is achieved by a microfilm reader printer characterized in that the printout is performed based on the following.

(Embodiment) FIG. 1 is a diagram showing a microfilm according to an embodiment of the present invention.
2 is an operation block diagram of the reader printer, FIG. 3 is a flowchart of the operation, and FIG. 4 is a diagram showing a keyboard as input means.

In FIG. 1, reference numeral 10 denotes a light source. The light of the light source 10 is a condenser lens 12, a heat insulating glass 14, a cold mirror.
The microfilm 18 is guided to a transmission screen 28 via a microfilm 18, a projection lens 20, an image reversing prism 22, mirrors 24 and 26, and forms an enlarged image of the microfilm 18 on the screen 28. Here, the prism 22 is rotatable by a motor 30, and can rotate an image based on a signal from a CPU 48 described later.

On the back side of the screen 28, a scan unit 34 in which a CCD line sensor 32 capable of reading in both directions is incorporated is vertically long, and the scan unit 34 is horizontally moved by a pair of upper and lower horizontal guide rails 35 (only one is shown). It is possible to move to. The line sensor 32 performs main scanning by reading out an image in its length direction (main scanning direction) and sequentially outputting the image signal a as a time-series signal.
The sub-scan is performed by moving in the left-right direction. The line sensor 32 is capable of main scanning in both directions,
In a case where one line sensor 32 can scan in both directions, or in a case where such a configuration cannot be made, two line sensors may be provided side by side to scan in opposite directions.
In this way, different images can be read when the scanning unit 34 reciprocates, and the reading speed is increased.

The line sensor 32 is driven by a CCD driver (not shown) in synchronization with a clock pulse output from a clock (not shown). The signal a is output. The signal a varies for each pixel even if the same amount of light is projected due to variations in characteristics of each pixel. Signal processing circuit
Numeral 40 corrects the variation in this characteristic of each pixel and shapes the waveform to obtain an output signal b. The output signal b thus processed is converted to a digital signal c by the A / D converter 42 and input to the control means 44.

The control means 44 has an input interface 46, a CPU 48, an output interface 50, a ROM 52, and a RAM 54. The ROM 52 stores a control program of the CPU 48 and the like. 56 is a printer, 58 is an optical disk as an external memory, and 60 is a keyboard as input means.

On the left side and lower side of the screen 28, LED (light emitting diode) arrays 62 and 64 extending along these two sides are attached. These LED arrays 62 and 64 are display means for displaying the print range by turning them on or off. For example, many LED's are arranged in a line at intervals of 5 mm.

The portion 60A of the keyboard 60 related to the present invention is the fourth
The key layout is as shown in the figure. In this figure, reference numeral 100 denotes a double change designation key, which is pressed to change the print magnification, and further sets the print magnification by numerically inputting the magnification with a ten-key (not shown). Reference numerals 102 (102a to 102d) denote cursor keys, which are used to move the print range up, down, left, and right. A trim key 104 is pressed to erase a black frame outside the image or an unnecessary area outside the print area. Reference numeral 106 denotes a mask key for specifying an unnecessary range in the image. These ranges are set by the up / left key 108 and the down / right key 110. The output signal of the keyboard 60 is input to the conversion means 66, which calculates the corresponding print area on the screen 28 and causes the LED arrays 62, 64 to display this area. At this time, conversion means 66
Is displayed, for example, in a blinking manner so that a print unnecessary range, that is, a mask range in the image can be identified from other print ranges.

When using the apparatus of this embodiment, the user first selects the reader mode using the keyboard 60 as input means, and causes the image of the film 18 to be projected on the screen 28. At this time, the CPU 46 causes the LED arrays 62 and 64 to display a range determined by the size of the copy sheet of the printer 56 (FIG. 3, step 200). That is, the LED array 6 included in this range
Turn on 2 and 64. The range in which the LED arrays 62 and 64 are turned on in this way is also a reading range for printing. When the user changes the print magnification using the magnification key 100 and the numeric keypad (step 202), an LED corresponding to the magnification is displayed.
The arrays 62 and 64 change the display range (step 204).
That is, the LED arrays 62 and 64 are turned on only in the range actually printed (print range), and for example, when the enlargement is set to twice, the display range is reduced to half. To move the display range (print range), use the cursor key 102
(Step 206), the LE is operated by operating the key 102.
The display position on the D arrays 62 and 64 moves (step 20).
8).

The user determines the print range while looking at the screen 28, and presses the trim key 104 (step 210) to erase a black frame or the like on the outer periphery of the image (trim), and sets the read range using the keys 108 and 110 (step 212). Then L
The lighting ranges of the ED arrays 62 and 64 are reduced, and only the printable range (print range) is turned on (step 21).
Four).

If you do not need to print some parts of the image, use the mask key 10
6 is pressed (step 216), and the range is set by the keys 108 and 110 (step 218). Then, the LED arrays 62 and 64 blink and display the masked area, that is, the area not to be printed (step 220).

As described above, the print range actually printed is displayed around the screen 28 by the LED arrays 62 and 64, so that the user can easily confirm the print range by looking at this display. Coordinates X _1, X ₂ of the print range, Y _1, Y ₂
(FIG. 2) is stored in the RAM 54.

When the print area setting is completed, the user
Selects a print mode (step 222).

When the keyboard 60 selects the print mode, an instruction to read an image is input to the control means 44, and the scanning unit
34 is run from either left or right end of the screen 28, and an image is read by the running line sensor 32 (step 22).
Four). This image signal a is supplied to the signal processing circuit 4 as described above.
0, the digital signal c is passed through the A / D converter 42,
Is read in. The CPU 48 binarizes this signal c at a predetermined binarization level (FIG. 2, binarization means 68). The digitized signal, that is, the black-and-white signal d (FIG. 2) is sent to the mask means 70. The mask means 70 includes coordinates X ₁ , X ₂ , of the print range input from the keyboard (input means) 60.
Y _1, changing Y ₂ from the RAM54 read, a monochrome signal d to white for a range other than the range surrounded by these coordinates (print area) when the trim, when the mask changing the monochrome signal d in this range to white . The black-and-white signal e thus corrected by the masking means 70 is input to the scaling means 72, where it is changed to an image signal f of the magnification set by the keyboard (input means) 60. For example, to enlarge by a factor of two, the signal e
The signal e is repeated twice in the direction, and when the image is reduced to 1/2, the signal e may be read one by one in the XY direction.

The signal f thus scaled is sent to the printer 56 in response to a print command from the keyboard 60, and output as a hard copy (step 226). This signal f may be stored in another external memory such as the optical disk 58 or sent to another image processing device.

In the above embodiments, the display means is constituted by an LED array. However, the present invention can be used as long as it can display a range in a linear direction, and may be a lamp array, a liquid crystal display panel, or the like.

In this embodiment, a line sensor is used as an image sensor.
Using 32 and moving this to read the image,
Of course, a two-dimensional area sensor may be used.

(Effect of the Invention) As described above, the present invention provides display means along two sides of the screen, and makes it possible to distinguish the print range and the mask range in correspondence with the projected image being displayed on the screen. Since the print range can be displayed on the display unit and the print range can be input while confirming the display unit, the print range can be easily and accurately set even when the print magnification is changed or the paper size is changed. . Also, in terms of the number of parts, the display means can be provided on two sides of the screen, and a key for printing range input can be added to the original keyboard, which simplifies the structure of the apparatus. Further, when there is a mask range which does not need to be printed in the image, this mask range is displayed on the display means so as to be identifiable from the print range, so that the mask range can be easily confirmed and convenient.

[Brief description of the drawings]

FIG. 1 is an overall view of a microfilm reader printer according to an embodiment of the present invention, FIG. 2 is an operation block diagram thereof,
FIG. 3 is a flowchart showing the operation, and FIG. 4 is a diagram showing a keyboard as input means. 18 ... Microfilm, 32 ... Line sensor, 56 ... Printer, 60A ... Keyboard as input means 62 ... LED array as display means 66 ... Conversion means 68 ... Mask means 72 ... means of zooming.

Claims (1)

(57) [Claims] An image sensor reads a microfilm image projected on a screen and outputs the image to a printer, so that a print magnification can be changed without changing a projection magnification of the projected image on the screen. In a reader printer, an input means for inputting a print range and a print magnification and setting a mask range not requiring printing, and a print range corresponding to a projected image displayed on the screen along two orthogonal sides of the screen. Display means for displaying, and a display area corresponding to the print magnification set by the input means as a corresponding area on a screen, displayed on the display means, and the mask area is displayed so as to be distinguishable from the display of the print area. Means for converting the output signal of the image sensor A mask means for extracting an output signal of the print range from the image data, and a scaling means for scaling an output signal of the image sensor to a set print magnification, and print-output based on an output of the scaling means. A microfilm characterized by that
Reader printer.