JPS5938107B2 - Feed control system for phototypesetting machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a feed control system in a phototypesetting machine, and more particularly to a system that can automate line alignment when printing in italics using simple and inexpensive means.

By appropriately selecting the deformation rate α and setting angle β of the deformable lens installed in the phototypesetting machine, italic characters 1 as shown in Fig. 1 are printed, and the printing position is sequentially moved to form a horizontal line. Aligned Format 2 or Vertical Line Aligned Format 3
It is well known that it is possible to create

Conventionally, when performing this type of italic line alignment, four coefficients listed in a separately prepared numerical table as shown in Figure 2 are used: - Horizontal type deformation rate KH - Vertical type type deformation rate KH KV ・With reference to horizontal writing direction slope rate tanθ1 or ・vertical writing direction slope rate tanθ2, a in FIG. 1 is calculated based on the following formulas
, b, c, and d, these values were individually set as the feed amount in the character filling direction and the feed amount in the line direction, respectively, and the feeding in the character filling direction was performed in conjunction with the operation of the print key. Afterwards, by operating a line feed lever or the like to feed in the line direction, a desired italic line alignment typesetting was created.

a=Q (font size) x K H・・・・・・■b
= a xtanθ1 ・・・・・・■
c = Q X K y ...
・■d=cXtanθ2...
...■ However, in such a conventional example, it is necessary to prepare a numerical table listing the four coefficients for various combinations of the deformation rate α and the setting angle β, or to calculate from this numerical table. Find the desired coefficient and apply the above formula ■～■
This forces the operator to perform calculations based on the calculation results and set the calculated results as the feed amount each time.

Furthermore, the four coefficients obtained from the numerical table often have some errors due to processing such as rounding, so they are affected by two types of coefficients: deformation rate and slope rate. The values of S and d also have the problem that more errors are accumulated compared to the values of a and C.

The present invention has been made in view of these problems of the prior art, and its first purpose is to automate the feed control necessary for italic line alignment typesetting by a simple and inexpensive means. In the most ideal embodiment, the second purpose is to reduce the number of coefficients involved in determining the feed amount from the conventional four to three, and to reduce the cumulative error in the conventional example. The third object is to enable the automation of the first object to be achieved by using computer processing functions.

Below, before explaining the present invention based on examples,
Definitions of terms and their interrelationships are shown in FIGS. 3 and 4.

Figure 3 shows the Q when a deformable lens with a deformation rate α is set at an angle β with respect to the reference line 4 (vertical feeding direction in the case shown).
It shows the relationship between the block letters 5 and the italic letters 1, and FIG. 4 shows the mutual relationship of terms according to the line alignment and typesetting direction.

By the way, the relationship between the deformation rate α, the setting angle β (the actual character size Q), and each value of a, b, c, and d in Fig. 3 is as follows.
Conventionally, these relationships were understood only as non-linear relationships, but in making the present invention, it was found that these relationships can be replaced with simple geometric relationships as shown in FIG.

As will be described in detail below, in the present invention, b in FIG.
In order to correspond to the relationship d, substantially the same value is adopted for the vertical feed amount when a horizontal composition command is given and the horizontal direction feed amount d when a vertical composition command is given. Of course, the relationship shown in FIG. 5 can also be used in numerical calculations.

FIG. 6 is a schematic diagram showing an embodiment of a phototypesetting machine implementing the method according to the present invention, including a light source 6, a dial 7, a main lens 8, a deforming lens 9, a collimator lens 10, and a reflecting mirror 1.
1. The configurations of the moving optical system 12, the sensitive material drum 13, the horizontal feed drive circuit 14, the vertical feed 1 drive circuit 15, etc. are conventionally known.

It should be noted that each of these configurations is merely an example, and it goes without saying that the present invention can be applied to phototypesetting machines with other types of configurations.

Furthermore, in FIG. 6, 16 is a feed amount command unit, 17 is a unit that detects the type of deformable lens 9 brought into the photographing optical system,
A deformation lens detector 18 outputs a signal corresponding to the deformation rate α of the lens, a setting angle detector 18 outputs a setting angle β of the deformation lens 9 with respect to the reference position, and 19 detects the type of the main lens 8; The main lens detectors 20 and 21 output the Q-number signal of the main lens, and are respective composition direction command switches for horizontal composition and vertical composition.

22 is the deformed lens detector 17 and the setting angle detector 1;
a coefficient generating section that outputs signals corresponding to the values of and to lines 23, 24, and 25, respectively, based on the signals of the deformation rate α and the set angle β sent from 8;
26 is a flip-flop, and 27 and 28 are multiplication circuits.

The coefficient generating section 22 only needs to have a function capable of outputting signals corresponding to each of the three types of values, for example, it may have an arithmetic function that faithfully executes calculations based on the relational expressions. Alternatively, each value calculated in advance for each combination of several deformation rates α and set angle β may be stored, and the value corresponding to the given deformation rate α and set angle β may be calculated from among them. The specific form is free, such as reading it out, or outputting a signal obtained based on another relational expression or approximate expression equivalent to the above relational expression.

Therefore, for example, when a horizontal composition command is given from the switch 20, the gate circuits 29 and 30 become conductive and the lines 23 and 2
4 is supplied to multiplication circuits 27 and 28.

Therefore, both drive circuits 14 and 15 each have a The value corresponding to is the feed amount. will be given instructions.

Further, when a vertical layout command is given from switch 21, gate circuits 31 and 32 are rendered conductive, and signals on lines 24 and 25 are supplied to multiplication circuits 27 and 28.

Therefore, a value equal to the value commanded to the vertical feed drive source 15 at the time of the horizontal composition command is newly commanded to the horizontal feed drive source 14, and the value corresponding to the vertical feed 1 drive source 15 is The feed amount will be commanded again.

In this way, the values commanded to the drive circuits 14 and 15 are the horizontal feed amount a when horizontal writing is commanded.
It is clear from the relationships shown in FIGS. 3 and 5 that this corresponds to the horizontal feed amount d and the vertical feed amount C when a vertical assembly command is issued.

Therefore, based on these command values, the feed 1 drive circuit 14
and 15 to operate the moving optical system 12 and the sensitive material drum 1.
By driving 3, a desired line alignment typesetting as shown in FIG. 1 can be automatically obtained.

The configuration of the feed amount command unit 16 schematically shows one embodiment of the present invention, and is not limited to this. For example, it may be substituted with a computer, and the calculation or typesetting can be performed there. It is also possible to instruct the two-way feed drive circuit with a value that is subject to processing such as selection switching based on the direction command.

As described above in detail, the method according to the present invention inputs the deformation rate α, setting angle β, and assembly direction command of the deformable lens as variables, and when a horizontal composition command is given (the number of lenses and In addition to commanding the value equivalent to the product of , as the lateral feed amount, (b)
.

A value corresponding to the product of and Q number is commanded as the vertical feed amount, and when a vertical composition command is given, a), a new value equal to the vertical feed amount at the time of the horizontal feed command is given. At the same time, a value corresponding to the product of (b) and Q number is commanded as the vertical feed amount, and these horizontal and vertical feed amounts are The V-type is designed to perform two-dimensional feeding based on both feed amount commands, thereby making it possible to automate diagonal line alignment typesetting by simple and inexpensive means, and
The number of coefficients involved in determining the feed amount is reduced, furthermore, it is possible to prevent the occurrence of cumulative errors included in the feed amount command, and the automation can also be achieved by computer processing.

[Brief explanation of drawings]

Figure 1 is an explanatory diagram of line alignment typesetting using italic characters, Figure 2
The figure shows an example of a numerical table conventionally used in line alignment typesetting, Figure 3 shows the relationship between regular characters and italic characters, and Figure 4 shows the mutual relationship of terms depending on the line alignment typesetting direction. Figure 5 is a diagram showing the geometrical relationship between each required feed amount, the deformation rate of the deformable lens, and the set angle during line alignment typesetting, and Figure 6 is a diagram showing a phototypesetting machine that realizes the method of the present invention. FIG. 1 is a schematic diagram showing an example. 1... Italic character, 5... True character, 1
4... Horizontal feed drive circuit, 15... Vertical feed drive circuit, 16... Feed amount command unit, 17...
... Deformation lens detector, 18 ... Setting angle detector, 19 Main lens detector, 20.21 ... Formatting direction command switch, 22 ... Coefficient generation Part, 2
7, 28...Multiplication circuit, α...Deformation rate, β...Setting angle.

Claims (1)

[Claims] 1. A feed control system for a phototypesetting machine that performs feed proportional to the Q number (character size), where α is the deformation rate of the deformable lens, and β is the set angle. Two values determined according to the assembly direction command are selected from among three values: a value corresponding to the product of Q number, a value corresponding to the product of and Q number, and a value corresponding to the product of and Q number. It is equipped with a feed amount command unit 16 that outputs a value, and when a horizontal writing command is given, it commands a value corresponding to the product of (a) and Q number as the horizontal feed amount, and also (b) and Q. A value corresponding to the product of the number and the number is commanded as the vertical feed amount, and when a vertical writing command is given (a), a value equal to the vertical feed amount at the time of the horizontal writing command is set as the new value. is re-commanded as the horizontal feed amount, and a value corresponding to the product of and the Q number is commanded as the vertical feed amount, and regardless of the assembly direction, both horizontal and vertical feed amount commands are applied. A feed control system for phototypesetting machines that automatically performs feed based on each printing operation.