CN1074991C - Printing and plate hanging method of thermosensitive plate paper - Google Patents

Abstract

The invention relates to the electronic industry, in particular to the aspect of thermal printing.

After analog and digital image processing, the invention stores a line of data in the memory in a dot-by-dot sequence from left to right, and reads and sends the data to a thermal head of a fax machine in a reverse sequence to realize mirror printing. Dividing the working pulse width of a thermal head for a fax machine into multiple stages within the range of 1-2 times of the working pulse width; and determining the printing pulse width corresponding to the thermosensitive version paper as the total printing pulse width of the machine, repeatedly printing the image data of one line, and then switching to the printing of the data of the next line. The plate-making design determines the proper reserved length by adjusting the relative position of the plate-making text.

Description

The printing of temperature-sensitive print paper and the version method of extension

The present invention is relevant with electron trade, is specifically related to the thermal printing aspect.

Aspect the paraffin paper plate-making of office mimeograph, heat-sensitive plate-making paraffin paper replaces standard machinery typewriter paraffin paper and mimeograph plate-making paraffin paper just gradually at present.Temperature-sensitive print paper has that plate-making speed is fast, precision is high, and characteristics such as long service life, applicability are strong are familiar with by people day by day.Yet the special-purpose heat-sensitive plate-making head of the employed Primary Component of temperature-sensitive print paper platemaking equipment has only indivedual manufacturer production and price very high at present in the world.Because the platemaking equipment price of temperature-sensitive print paper is very expensive, and mostly is the Plate making printing integral machine greatly, lack and be the supporting temperature-sensitive print paper platemaking machine of low and middle-grade mimeographs, therefore make promoting the use of of temperature-sensitive print paper be subjected to influencing significantly.

For this reason, the invention provides a kind of Common Facsimile Machine of utilizing and hang version method, be intended to reach the purpose that addresses the above problem with the easy printing of thermal photography head.

The four gating thermal photography heads that common facsimile machine is used are limit owing to its structural parameters, its heater fever time is short, energy consumption is less, when on the mimeographic-screen forming machine, using, can only on temperature-sensitive print paper, stay vestige to a certain degree, and can not guarantee to make the heat sensitive film layer fusing on the temperature-sensitive print paper to shrink, expose cotton basic paper, so that during mimeograph, printing ink is squeezed and penetrates the temperature-sensitive print paper version and be imprinted on the paper.Because the work pulsewidth of thermal printing head is all restricted in case heater " burning " influences the life-span, so be difficult to the temperature-sensitive print paper fusing be shunk by the method that adds wide pulse width.Adopt the duplicate printing method for this reason, promptly after the printing of having finished line image data, repeat again once to print successively, and then change the printing of line data over to.For the second time printing pulsewidth is divided into multistage by programme-control, the total printing pulsewidth of machine just can be selected in 1～2 times of work pulsewidth scope, to adapt to the temperature-sensitive print paper requirement, can expose cotton basic paper so that the heat sensitive film layer fusing is shunk when guaranteeing to print plate-making, can " burning " not cause that the heat sensitive film layer large tracts of land comes off again, thereby guarantee plate-making quality.The extension version of machine is designed for the relative position of adjusting the plate-making text, determines suitable length in reserve, makes it can press from both sides to hang on the paraffin paper folder type mimeograph and directly use, and is not only convenient but also save cost.Having changed original clip paraffin paper type mimeograph need use hanging head could use the situation of temperature-sensitive print paper.The present invention has compared following advantage with existing temperature-sensitive print paper method for platemaking:

1, cost is low.The Common Facsimile Machine thermal head price of using has only about 1/10th of original special-purpose thermal head.

2, be convenient to promote the use of, safeguard simple.

The principle of the invention is illustrated in conjunction with the accompanying drawings.

Accompanying drawing is represented thermal printing head element circuit structural principle schematic diagram

Contained the imageing sensor scanning of 2048 pixels when the original image signal after, be converted into the binaryzation data signal through photosignal conversion, analog picture signal processing and A/D.Every capable view data after Digital Signal Processing puts in order by pointwise from left to right and is stored in the memory.Because the temperature-sensitive print paper that requires to make should be mirror image with original copy, so that the mimeograph folder is consistent with original copy, so when printing, read each point data successively according to the programming inverted order and send in the register of thermal head, the mirror printed of realization image.

The present invention selects B4 specification facsimile machine thermal printing head for use.It is 2048 the solid record head that a big specification integrated circuit is made, and is made up of tens record cells.With regard to four gating thermal printing heads, 32 record cells are arranged.Each record cell comprises 64 heaters again.A pixel in each corresponding horizontal scanning line of these heaters.

A thermal printing head unit comprises shift register 8, latch 7 and gate driver 6 and heater 5.Shift register 8 and latch 7 all are made up of D flip-flop.The former is used for the dextroposition to viewdata signal, and each unit can store 64 black white image data-signals; The latter is used for finishing by parallel in the shift register 8 and moves more than 64 bit data, so that the parallel AND circuit that outputs to.With latch 7 everybody corresponding and gate driver 6 circuit then is the selection and the driving of control black white image data-signal, and heater 5 converts electric energy to heat energy.The corresponding binary data signal of black-and-white image signal is high and low level respectively, after gating signal 4 is chosen the record cell circuit, viewdata signal 2 enters thermal printing head with serial mode under the effect of clock signal 1, transmit data toward shift register 8 to the right successively, treat that 2048 are sent when full latch signal 3 effective, data-signal in the control shift register 8 is parallel to be transported in the latch 7, cooperates four sections printings of branch with gating signal 4.When gating signal 4 was chosen, if having high level in the latch 7, just then corresponding with it and gate driver 6 circuit conductings, heater 5 produced heat by electric current, and the temperature-sensitive print paper fusing that just is pressed on the thermal printing head is shunk, and exposes cotton basic paper; If be electronegative potential, then corresponding and gate driver 6 not conductings of circuit, the heater no current is not by generating heat, and heat-sensitive plate-making paraffin paper is no change also.

The fever time of the pulsewidth decision heater 5 of thermal printing head, pulsewidth is big more, and fever time is just long more.The vestige that the black signal of high level correspondence stays on temperature-sensitive print paper is just dark more.But because Common Facsimile Machine is limited with thermal printing head work pulsewidth, can not satisfy mimeograph temperature-sensitive print paper requirement, therefore be controlled at by designing program line image data print finish after, repeat again to print successively one time.And the pulse width when printed the second time is divided into multistage.Select by button on the guidance panel, determine that machine always prints pulsewidth.So both guaranteed not overshoot of the work pulsewidth scope of thermal printing head, satisfied the requirement of heat-sensitive plate-making again, and can guarantee can not print " burning " to occur, caused heat sensitive film layer large tracts of land obscission because of secondary.After printing is finished for the second time, carry out the printing of next line image data-signal again.By that analogy, after Print All finishes the back and presses preseting length output temperature-sensitive print paper, after being cut off, just made mimeographic-screen forming paraffin paper by cutting knife.

Various in view of various manual, electronic, semi-automatic mimeograph models, structure is different, for as far as possible directly using temperature-sensitive print paper, has designed corresponding extension version method.It is too thin because of temperature-sensitive print paper to have solved paraffin paper folder type mimeograph by the extension version method of determining suitable length in reserve, the folder that falls turns over extension, is difficult to clamp and the problem that will use hanging head to use.When the plate-making text of temperature-sensitive print paper departs from print range, keep the constant method of length overall by the dummy plate paper length that changes plate-making text front and back, adjust the relative position of suitable paraffin paper version text.

When using temperature-sensitive print paper, the paraffin paper folder that paraffin paper is pressed from both sides the type mimeograph is opened, and the paraffin paper top that hair side is made progress is upside down in clamping in the paraffin paper folder, then paraffin paper is turned over, and light faces up and can equally use with ordinary wax paper; For the full-automatic mimeograph of hanging column type list seal tube, select corresponding length in reserve for use.Temperature-sensitive print paper after the plate-making is stained with hanging head and hangs on the mimeograph and use.

Claims (1)

1. a mimeograph is with the printing and the version method of extension of temperature-sensitive print paper, it is characterized in that: be divided into multistage with the work pulsewidth of thermal head facsimile machine, in 1～2 times of work pulsewidth scope, determine with the corresponding printing pulsewidth of temperature-sensitive print paper as the total printing pulsewidth of machine, one line image data are carried out duplicate printing, then change the printing of next line data over to; Adjust the relative position of plate-making text, determine suitable length in reserve, be used for different types of mimeograph.

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