JPH0132071B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a monitor display method and device for a phototypesetting machine that uses an optical dial as a character generation source. This is so that it can be confirmed.

In a phototypesetting machine whose character generation source is an optical dial, generally called a manual machine, it is difficult in principle to directly grasp the state of printing on the photosensitive material during the printing operation. On the other hand, it is natural that it would be convenient if this printing condition could be easily checked, but it is especially useful for so-called mixed printing or edge printing where characters of various sizes are printed, or for reducing the character spacing as appropriate depending on the character shape. The sensory impression received from the overall layout of the printed matter is important when printing with a full-length printing method, and it is desirable to understand the progress during the printing process in order to be able to judge the quality of the printing process. By the way, it was hot.

Conventional phototypesetting machine monitor devices that have been devised based on these requirements include, for example, branching the character image to be printed via a half mirror inserted into the projection printing optical system and displaying it on the viewfinder. The items to be displayed, the characters that have already been printed, and the characters that are to be printed are sequentially displayed in a fixed size at a predetermined position on the cathode ray display tube. What has been done is known.

However, the former of these conventional devices is
Since the character images are projected onto a window made of frosted glass or the like, the character images displayed there are temporary, and therefore the characters that have already been printed are completely ignored. .

In addition, the latter display position only allows you to know the type of character (what character it is), and the actual printing position of each character image on the photosensitive material,
There is no way to know the size, shape, etc. For example, even if printing is done at random positions on a photosensitive material, it will be printed chronologically according to the printing order.
Since they are displayed in a fixed position,
On the contrary, there was a risk of erroneous operation.

Furthermore, Patent Publication No. 103728 published in 1973 discloses that after a character image is captured by a TV camera configured to move in the same direction and the same amount as the photosensitive material, it is sent to a TV via an endless type video device that captures only one image. A monitor device for displaying images on a television receiver is disclosed, but this device not only requires a separate mechanism for moving the television camera, but also requires a separate mechanism to move the television camera, and is also capable of displaying images on a single screen regardless of the size of the area occupied by the characters to be recorded or erased. The video device operates on the entire image.

The present invention has been made in view of the above-mentioned conventional problems, and it is possible to easily check from the outside the actual printing state of characters to be printed or various characters that have already been printed on a photosensitive material. The present invention provides a monitor display method and an apparatus for the same. This will be explained below based on the drawings.

FIG. 1 is a schematic diagram showing an example of an apparatus implementing the present invention. The parts numbered 1 to 17 in FIG. 1 are well-known parts that constitute a phototypesetting machine that uses an optical dial as a character generation source. The light is selectively irradiated onto the desired characters on the optical dial 4 through the condensing lens 2 and the prism 3, and the luminous flux from the irradiated characters is transmitted through the variable magnification lens 5, the deforming lens 6, the prism 7, and the shutter 8. , a desired character image is projected onto a photosensitive material drum 10 via a projection printing optical system such as a moving optical system 9, and is projected and printed onto a photosensitive material 11 loaded onto the drum 10. Further, 12 is a driving rack attached to the moving optical system 9, and 13 and 14 are drive sources for moving the printing position on the sensitive material by driving the moving optical system 9 and the sensitive material drum 10. 15 is a desired variable magnification lens 5 and a deformable lens 6
16 is a lens selection control circuit that outputs a desired lens selection signal to the drive source 15; 17 is a desired printing position signal commanded from a circuit not shown separately; This is a feed control circuit that operates the drive sources 13 and 14 based on.

Furthermore, in FIG. 1, reference numeral 18 denotes a monitor imaging unit inserted into the projection printing optical system to obtain a character signal of the image formed in proportion to the size of the character image to be printed. lens 2
0, an image pickup tube 21, an image pickup tube readout control circuit 22, and the like.

23 is a print position signal setting unit that outputs a signal corresponding to the desired print position on the photosensitive material 11, that is, the relative position of the projection printing optical system with respect to the photosensitive material 11; It is provided with an X position register 24 and a Y position register 25 that follow and advance.

Reference numeral 26 denotes a read address signal generating section which outputs a read address signal necessary for sweeping the character image projected onto the image pickup tube 21.

Reference numeral 27 denotes a suitable display means 28 such as a cathode ray display tube (CRT), storage type display tube, or plasma display, and a display control circuit 29 for driving and controlling the display means 28, which is equipped with a refresh memory as necessary. The monitor display unit is configured to receive an image signal from the monitor image pickup unit 18, and also receives the image signal from the readout address signal generation unit 2.
6 and the desired print position signal output from the print position signal setting section 23 as a display or writing address signal, and display the desired character image. It is adapted to be displayed at a predetermined position on the means 28.

Incidentally, when the non-storage type cathode ray display tube (CRT) is employed as the display means 28, the write control for the refresh memory is basically the same as the write control for the storage type display tube in the case of the present invention. Therefore, in the following explanation, a case will be explained in which a storage type display tube is used as the display means 28.

Further, when reading an image signal from the monitor imaging section 18, the imaging tube 21 may be directly driven by a signal from the read address signal generating section 26, or the monitor display section 27 may be driven directly by the signal from the read address signal generating section 26. In order to facilitate synchronization with the operation of the image pickup tube readout control circuit 22, an image memory may be provided in the image pickup tube readout control circuit 22, and a desired signal may be read from the memory.

FIG. 2 is a diagram showing the relationship between each signal in the embodiment shown in FIG. 1. FIG. 3 is a diagram showing the coordinates of the current printing position A on the photosensitive material 11 and an example of the character to be printed (the character "A" indicated by a dotted line in the diagram), and FIG. FIG. 5 is a diagram showing an example of the character being imaged, that is, the character selected from the optical dial 4 to be printed from the optical dial 4 (the character "A" indicated by a solid line in the figure), and the display means 28 is shown in FIG. It is a figure which illustrates the display state in the upper part.

In the following description, in order to simplify the explanation, it will be assumed that the scales on the photosensitive material 11, the image pickup tube 21, and the display means 28 shown in FIGS. 3 to 5 are the same.

For example, when attempting to print the character "A" with the coordinates (Xa, Ya) on the photosensitive material 11 as the desired print position A as shown in FIG. Position signal (if the feed control circuit 17 and print position signal setting section 23 are linked as shown in FIG.
Since the signal that follows the printing position of the projection printing optical system relative to 1 is output, the lines 30 and 3 in FIG.
1 are output with signals corresponding to Xa and Ya, respectively, and furthermore, the character "A" is projected onto the image pickup tube 21 as shown in FIG.

In the configuration shown in FIG. 1, when the printing position of the projection printing optical system moves to point B in FIG.
Of course, signals corresponding to Xb and Yb are output at 0 and 31, and in Figure 2, the former case is shown as (A),
The latter case is shown in (B).

The image pickup tube readout control circuit 22 receives horizontal and vertical sawtooth wave address signals ΔX and ΔY as shown in FIG. 2 from the readout address signal generator 26 via lines 32 and 33.
Image signal of the character image formed on the image pickup tube 21
The IS is output to the display section 27 via the line 34.

Display or writing address signal generator 35
uses the sawtooth wave address signals ΔX, ΔY and the desired print positions Xa, Ya sent via the lines 30, 31 as input signals, and generates a signal proportional to the sawtooth wave address signals ΔX, ΔY. and the signal related to the desired print position, and outputs a sum signal corresponding to the sum value of the signal related to the desired print position. In the embodiment shown in FIG. 1, the proportionality constant for the sawtooth wave address signals ΔX and ΔY is set to 1, that is, the signal is directly supplied to each adder circuit 36 and 37, and the added value A sum signal corresponding to the sum signal is supplied to the monitor display unit 27 as display or write address signals Xd and Yd shown in FIG.

Display control circuit 29 in the monitor display section 27
operates based on the image signal IS and the display or writing address signals Xd, Yd to drive the display means 28, thereby displaying, for example, on the display means 28, as shown in FIG. The same characters as those projected on the image pickup tube 21 will be displayed on the photosensitive material 11 at a position A' corresponding to the desired print position A.

Incidentally, when the display control circuit 29 is equipped with a refresh memory as described above and drives a non-storage type cathode ray display tube, it goes without saying that writing similar to the display described above is once performed in this refresh memory. be. Further, when the signal output from the print position signal setting unit 23 or the print position of the projection printing optical system with respect to the photosensitive material 11 is at point B in FIG. Of course, the desired character is displayed within the area 38 based on point B'.

As described above, the character image displayed on the display means 28 is displayed at a position corresponding to the printing position of the projection printing optical system on the photosensitive material 11, and in exactly the same size and shape as the character to be printed. Therefore, if you proceed with the printing process sequentially under these conditions,
The display condition on the display means 28 faithfully reproduces the printing condition on the photosensitive material, and this brings about the great effect that the printing condition can be directly grasped during the printing operation.

FIG. 6 is a schematic diagram showing another embodiment of the present invention, in which the monitor imaging section 18 is provided between the optical dial 4 and the variable magnification lens 5, and the size of the printed characters ( The difference from the embodiment shown in FIG. 1 is that a Q number information setting section 61 regarding the character size (normally, the size of characters is displayed as a Q number) is newly provided.
In connection with this, the operation of the display or write address signal generating section 35 is also partially different.

The Q number information setting section 61 sets magnification information Q of the variable power lens 5 currently inserted into the projection printing optical system.
is received and set, for example, from the lens selection circuit 16, and the information Q is outputted via the line 62. Further, in the embodiment shown in FIG.
is provided closer to the dial 4 than the variable magnification lens 5, so it is independent of the type of variable magnification lens 5, or in other words, regardless of the size of the character image projected and printed on the photosensitive material. , a character image of a constant size is always projected onto the image pickup tube 21, and this point also differs greatly from the embodiment shown in FIG.

The display or write address signal generation section 3
A proportional circuit 63 provided in 5 connects lines 32 and 33.
synchronized with the sawtooth wave address signals ΔX and ΔY supplied to the image pickup tube readout control circuit 22 via
In addition, in order to obtain address signals ΔX' and ΔY' whose amplitudes are proportional to the magnification information Q (i.e., the size of printed characters), the magnification information Q is added to the address signal.
Find a signal multiplied by
6 and 37.

Therefore, the state of the character image obtained when writing and displaying based on the address signals ΔX' and ΔY' is based on the values Q ₁ and Q ₂ of the corresponding magnification information Q, as shown in FIG. The character image has a size proportional to (that is, equal to the size of the projected character image on the photosensitive material).

Furthermore, the address signals ΔX' and ΔY' outputted from the proportional circuit 63 are added to the signal from the print position signal setting section 23 in adder circuits 36 and 37, and the added signal becomes the display or writing address signal Xd'. , Yd' are supplied to the monitor display section 27.

Therefore, in the configuration shown in FIG. 6, for example, as shown in FIG. 8, the coordinates (Xc,
Yc) Position C is the projection printing position of the optical system.
Q: When printing the letter “A” in grade ₁ size,
On the display means 28, as shown in FIG. 9, a character image as shown in FIG. 7A is displayed at a position C' corresponding to the printing position C. Furthermore, when the printing position is at point D, the desired character image will be displayed with point D' corresponding to the position D as a reference, and as a result, a display exactly the same as the printing state will be displayed on the display means 28. You will get it.

In this way, the embodiment shown in FIG. 6 provides a monitor imaging section 18 in front of the variable magnification lens 5, and is suitable for cases where the character image projected onto the monitor imaging section and the character image actually printed are different in size. Even in this case, the position, size, and shape can always be displayed in accordance with the actual printed state.

The configuration of the display or write address signal generating section 35 shown in FIG. 6 is merely an example and is not limited to this.
When adding the readout address signals ΔX, ΔY supplied to the monitor imaging section 18 and the desired print position signal, the amplitude of the address signal is used as the magnification information Q.
display or write address signal proportional to
Of course, it is sufficient if Xd′ and Yd′ can be obtained.

In addition, in the above explanation related to FIG. 6, the case where the image is deformed by the deforming lens 6 has not been mentioned, but even in this case, the well-known deformed character signal generating circuit is placed before or after the proportional circuit 63. This can be dealt with by inserting the modified lens information into the Q number information setting section 61 as appropriate.

Furthermore, the configurations shown in FIGS. 1 and 6 show embodiments to which the present invention is applied. For example, the moving optical system 9 may be eliminated to make the sensitive material drum 10 movable in the lateral direction, or the structure shown in FIG. The imaging unit 18 can be moved in and out of the projection printing optical system, or the imaging tube 21 can be a solid-state imaging device.
Various configurations can be adopted without detracting from the gist of the present invention.

Further, as described above, if an appropriate image memory is provided in the image pickup tube readout control circuit 22, and the character image projected onto the image pickup tube 21 is once stored in the image memory, then the image is read out as appropriate. Even if there is an inconvenience in the character image displayed on the means 28, it is possible to reliably erase only the memory and display regarding the inconvenient character based on the signal from the image memory.

Therefore, after deleting only the memory and display of inconvenient characters as described above, by slightly displacing the desired print position and performing the monitor display operation as described above again, the characters that have already been printed can be erased. It is also possible to move and display characters to be printed in any desired position while keeping the display fixed. Of course, at this time, the characters that have already been printed are fixed in the storage type display tube or refresh memory and do not change. Therefore, according to the present invention, the position, size, etc. of the next printed character can be designed while looking at the positional relationship (layout) between these already printed characters and the characters to be printed.

Furthermore, the operations of the feed control circuit 17 and the print position signal setting section 23 in FIG.
5, it is natural that the character image taken by the monitor imaging section 18 can be displayed at the desired print position set from the outside.

As described above in detail, the present invention directs a desired character image selected from an optical dial toward a photosensitive material through a projection printing optical system equipped with a variable magnification lens, and In a monitor display method in a phototypesetting machine, in which a character image is projected and imaged onto a monitor image pickup unit inserted in a projection printing optical system, and the captured character image is reproduced and displayed on the monitor display unit; A sum signal corresponding to the sum of a signal proportional to the read address signal and a printing position signal regarding the relative projected printing position with respect to the sensitive material is used as a display or writing address signal in the optical dial. The selected character image is displayed on the monitor display section in correspondence with the projection printing magnification, the projection printing shape, and the projection printing position on the photosensitive material, and thereby the layout of the printing state on the photosensitive material is displayed. This makes it possible to view the information during the printing process, thereby contributing to the prevention of wasted work due to typographical errors, improved work efficiency, and the intuitive layout design of the entire printed matter.

Furthermore, as described above, when implementing the present invention, if the monitor display section is configured to have the function of sequentially storing character images, the currently selected character image from the dial is actually transferred onto the photosensitive material. When the printing position signal changes before printing, a signal equivalent to the displaying or writing address signal is used as an erasing address signal to temporarily display the character image at the position corresponding to the printing position signal before the change. By erasing only the image from the monitor display section, it is possible to deal with correction of an inconvenient display position.

Furthermore, the present invention provides a display or writing address signal that is a sum signal corresponding to the sum of a signal proportional to the readout address signal of the monitor imaging section and a printing position signal of the projection printing optical system on the sensitive material. This makes it possible to display a character image on a monitor at a position that follows the print position without the need for a mechanism that moves the monitor imaging unit to follow the print position of the projection printing optical system. The rewriting range is not the entire monitor display screen, but the range where the read address signal changes, that is, the area occupied by the characters to be displayed (for example, area 3 in Figure 5).
8) is now enough.

[Brief explanation of drawings]

1 and 6 are schematic diagrams showing different embodiments of the present invention, FIG. 2 is a diagram showing the relationship of each signal in the embodiment of FIG. 1, and FIG. 3 is a diagram showing printing on photosensitive material. FIG. 4 is a diagram showing an example of a character image projected on the image pickup tube; FIG. 5 is a diagram showing an example of the display state on the display means;
FIG. 7 is a diagram showing an example of biased display based on different magnification information, and FIGS. 8 and 9 are explanatory diagrams showing the printed state and the display state on the same scale. 1... Light source, 4... Optical dial, 5... Variable magnification lens, 6... Deformation lens, 8... Shutter, 1
1...Sensitive material, 16...Lens selection control circuit, 17
...Feeding control circuit, 18...Monitor imaging section, 2
3...Print position signal setting section, 26...Reading address signal generation section, 27...Monitor display section, 35
...Display or write address signal generation section, 6
1...Q number information setting section, 63...Proportional circuit.

Claims (1)

[Claims] 1. A desired character image selected from an optical dial,
The character image is directed toward the photosensitive material through a projection printing optical system equipped with a variable magnification lens, and the character image is projected and imaged onto a monitor imaging section inserted into the projection printing optical system, and the imaged character image is captured. A monitor display method for a phototypesetting machine, in which a signal proportional to a readout address signal of the monitor imaging section and a print relating to a relative projection print position with respect to the photosensitive material are reproduced and displayed on a monitor display section. A character image selected from the optical dial is set to a projection print magnification, a projection print shape, and a projection print position on the sensitive material, using a sum signal corresponding to the addition value with the position signal as a display or writing address signal. A monitor display method for phototypesetting machines that displays on the monitor display area in response to 2 The desired character image selected from the optical dial,
A phototypesetting machine that performs projection printing on a photosensitive material via a projection printing optical system equipped with a variable magnification lens, comprising: a printing position signal setting section in which relative position information of the projection printing optical system with respect to the photosensitive material is set; A monitor optical system inserted into the projection printing optical system to capture the desired character image, an imaging means disposed on the imaging plane of the monitor optical system, and a desired character image projected onto the imaging means. A monitor imaging unit comprising a readout control circuit etc. that reads out an image signal; a readout address signal generation unit that outputs a readout address signal to the monitor imaging unit; a signal from the print position signal setting unit; and a readout address signal. a display or write address signal generation unit that outputs a sum signal corresponding to an addition value with a signal proportional to the display or write address signal as a display or write address signal; and an image signal output by the monitor imaging unit and the display or write address signal. a monitor display section that displays a character image selected from the optical dial in correspondence with a projection print magnification, a projection print shape, and a projection print position on the photosensitive material, based on the above. Features: Monitor display device for phototypesetting machines. 3. The phototypesetting machine according to claim 2, characterized in that a monitor optical system constituting the monitor imaging section is inserted into a projection printing optical system between the variable magnification lens and the photosensitive material. monitor display device. 4. A monitor optical system constituting the monitor imaging section is inserted into a projection printing optical system between the optical dial and the variable magnification lens, and the display or writing address signal generation section Claim 1 is characterized in that a sum signal corresponding to an added value of a signal from a position signal setting unit and a signal obtained by multiplying the read address signal by magnification information Q of the variable magnification lens is output. A monitor display device in a phototypesetting machine as described in Section 2.