CN1090356C - Digital copier - Google Patents

Abstract

The present invention relates to a digital copier which comprises an image scanning input mechanism, an image editing computing mechanism, a panel option input mechanism, an image printing and output mechanism, an image scanning data buffer area, a printing data buffer area and three strobe gates, wherein keys and a microprocessor in the panel option input mechanism realize the strobe control of the work of each mechanism or component. In a copying mode, the copier realizes printing output according to scanning line synchronization; in a modification mode, the copier reads stored data according to frames, image data is first input into the image editing computing mechanism to be modified, and printed images are then reduced. In the copying process, images are represented by numbers to be transferred so that effective fidelity can be realized.

Description

Digital copier

The present invention relates to a kind of optical computing equipment, relate to a kind of digital copier or rather.

Light drum-type duplicating machine is to adopt optical principle that the image of original paper is projected light drum surface, under the effect of static, ink powder is fixed on the copy by the original paper image, finishing duplicating working, so light drum-type duplicating machine can be described as analog copying machine from copy mode.Such duplicating machine do not possess to the original paper image store, the ability of modification, school row, editor etc., since the light signal of image can be subjected to such as light deflection modulation, magnetic show, transfer printing and photographic fixing etc. are by the restriction of factors such as ink powder index and mechanical quality decision, the pixel of image is incurred loss, thereby be difficult to the photocopying effect that reaches desirable, can not realize high-quality duplicating, and high-quality light drum-type duplicating machine price is also very expensive.

The copy device with storage, modification, school row, editor, printing function that image scanning machine (as facsimile recorder, fax card) and computing machine, printer are connected and composed is also arranged in the existing office equipment, because each equipment adopts multiplicative model to connect, take up room many, connect more loaded down with trivial details, what the duplicating process needed machine as calculated reads in operation, printing supervisor, data can not directly be transmitted, thereby use is inconvenient, copying speed is slower.

The objective of the invention is to design a kind of digital copier, is a kind of integral type duplicating machine of being made up of image scanning input, computing machine and image print output that can handle again piece image.

The photocopying principle of this duplicating machine is that the original paper video is changed into digital signal after optical scanning, or stores in the duplicating machine, the original paper image is made amendment and editor again in order to the operator, again through printing output; Or directly drive printout, thereby finish the duplicating task.Because in the duplicating process, its picture signal is to transmit with the form of numeral, fidelity duplicates so can carry out effectively to image, thereby makes photocopying effect even more ideal than light drum-type duplicating machine, and how easy to use function is.

Digital copier of the present invention comprises the image scanning input mechanism, is used for the image scanning of duplicating original paper is converted into digital signal; The image print output mechanism is used for the view data printing is reduced into image; The panel options input mechanism is used for control and duplicates character; Picture editting's calculation mechanism is used for view data is carried out the secondary processing editing and processing; Between image scanning input mechanism and image print output mechanism, be connected with the view data buffer area, be used for image data temporary, it is characterized in that:

Described view data buffer area comprises first data buffer area, second data buffer area, first storbing gate, second storbing gate and the 3rd storbing gate; The output terminal of the described scanning input mechanism of input termination of described first data buffer area, the output terminal of described first data buffer area also connects the input end of first, second storbing gate, the output terminal of described first storbing gate also connects the I/O end of described picture editting's calculation mechanism and the input end of the 3rd storbing gate, the input end of described second data buffer area also connects the output terminal of second, third storbing gate, the input end of the described image print output mechanism of output termination of described second data buffer area; And, described panel options input mechanism can be input to described image scanning input mechanism, picture editting's calculation mechanism, image print output mechanism and view data buffer area respectively according to each gating control signal that option will be exported, or is input to described image scanning input mechanism, image print output mechanism and view data buffer area respectively.

Described panel options input mechanism comprises microprocessor, first code translator, second code translator, by copy mode or gray scale preference pattern or dwindle pattern or option input key that amplification mode constitutes and in each option pattern, do duplicating or numerical value enter key that modification, gray shade scale, magnification ratio, scale down are selected; The input end of the described microprocessor of output termination of described first, second code translator, described option input key connects the input end of first code translator, the input end of described numerical value input keyed jointing second code translator, described microprocessor is exported described gating control signal.

Further describe technology of the present invention below in conjunction with embodiment and accompanying drawing:

Fig. 1 is a ultimate principle block diagram of the present invention;

Fig. 2 is a basic structure block diagram of the present invention.

Referring to Fig. 1,11 are the image scanning input mechanism among the figure, and 12 is the view data buffer area, and 13 is that picture editting's calculation mechanism, 14 is the panel options input mechanism, and 15 is the image print output mechanism.

Image scanning input mechanism 11 is image digitization transformation mechanisms, has and the essentially identical principle of work of flatbed scanner, has to be converted into digital signal and to import the temporary function of data buffer area through scanning topworks duplicating the original paper image.It during enforcement the operating rate that can further improve the image scanning input mechanism, its view data should be directly inputted in the data buffer area (12) by data channel, can reduce like this because the slow problem of the copying speed that data reading speed caused of picture editting's calculation mechanism.At present, the resolution of scanner can reach 2400dpi, and employed smooth drum-type duplicating machine, its precision improves relatively on the existing market for this.Scanner can divide two kinds of monochrome, colours, monochromatic sweep velocity work with 300 point/seconds, and a width of cloth A4 paper only needed to finish the image digitization transformation 7 seconds.This digital duplicating machine can be used for reference at present the quite image scanning input method work of ripe flatbed scanner.

Picture editting's calculation mechanism 13 is to be the mechanism that can carry out the secondary processing editing and processing to view data 12 of core with the computing machine, can be according to people's wish partly or entirely editing, revising to view data 12, also can or all carry out processing such as convergent-divergent, transposition to the local of image, from the color photocopying angle, also can local or whole colors of image be defined again.Because the universal and application of portable computer in recent years, thereby when implementing digital copier, the side or the napex of the duplicating machine casing that computer department can be placed in are to form integral structure.Simultaneously because duplicating machine only is the office equipment of a special use, can be too not high to its calculation requirement, thereby can not keep hard disk etc., and from practicality a high capacity internal memory that can amass for storage A3 paper, that resolution reaches 2400dpi is set, be used to store the pixel of image.If be designed to color digital copying machine, then capacity is enlarged four times again.In addition, can LCD panel be set, keyboard is arranged on the dark place of duplicating machine body or is arranged on the LCD panel side in the duplicating machine body upper.In order to improve editing speed, can add search and modification that Genius mouse is accelerated view data to view data 12.In order permanently to keep the duplicating original paper, the dump device interface of data should be set, as the interface of disk or CD.Because the specificity of this calculation mechanism, its software need not to be retained in the external memory medium, can be directly fixed in the internal memory of calculation mechanism.

Image print output mechanism 15 can be made according to the principle of laser printer or ink-jet printer or duplicating machine, and view data 12 is printed reduction becomes image.For improving copying speed,, also can adopt the mode of subregion, multiple print head etc. that image is printed simultaneously during enforcement except that view data can being directly inputted to the data buffer area of ink-jet printer or laser printer by data channel after transforming.Because in existing dot matrix printer, has only the relative other forms of printer precision height of laser printer with ink-jet printer, resolution can reach 720dpi, and especially the resolution of laser printer has reached more than the 2000dpi, plays an important role to improving copying quality.Aspect print speed, laser printer is also than the ink-jet printer height, the LaserJet4V type laser printer of releasing in recent years as hewlette-packard is under the clear condition of A4 breadth, 600 * 600dpi resolution, printable 6 pages of per minute, and its HP DJ1200C type ink-jet printer of releasing in the recent period, with 500 * 300dpi resolution, per minute only can be printed 7 pages, this shows their difference on print speed.But aspect colour print, ink-jet printer is much lower than the laser printer cost, and this can become important selection to this digital copier in the design of color photocopying.Laser printer and ink-jet printer are for the image print output of this digital copier, though its duplicating and row's chart speed degree are slow than light drum-type duplicating machine, its ratio of performance to price is that light drum-type duplicating machine is incomparable.

Panel options input mechanism 14 is used for control and duplicates character, and four kinds of options for example can be arranged, and wherein first option is that copy mode is selected, comprise modification pattern and copy mode, when selecting the modification pattern, the image of its original paper can be mended input picture editor calculation mechanism 13, in order to the usefulness of modification; When selecting copy mode, will be considered to need not to handle again original paper, this moment, digital copier did not just need to read and store by a frame, and can print output synchronously by scan line, to improve copying speed.Second option is that gray scale is selected, and 64 grades of gray scales can be provided, and is enough to satisfy the requirement to gray scale such as middle and high level desktop scanners and laser printer.Option three, four contracts, puts selection for duplicating, for example can be in 2% ratio increasing or decreasing.The core component of panel options input mechanism 14 is microprocessors.

Referring to Fig. 2,21 is that first data buffer area, 22 is that second data buffer area, 25,24,25 is respectively first, second, third storbing gate among the figure.Microprocessor 26 (as 8951), first code translator 27, second code translator 28 and option input key 29, numerical value enter key 30 constitute panel options input mechanism 14.The signal of microprocessor 26 output gated sweep input mechanisms 11, picture editting's calculation mechanism 13, image print output mechanism 15, first and second data buffer area 21,22 and 25,24,25 work of first, second and third storbing gate, storbing gate is as interface circuit work.

When the operator places original paper on the scanning mechanism 11, press panel input option one (29,30) behind the selection copy mode, make digital copier enter the duplicating state, this moment, the scanning topworks 11 of digital copier just can be under the control of microprocessor 26 (8951), be converted into digital signal and be stored in the scan-data buffer area 21 by being about to the image of original paper, because when option operations, microprocessor 26 has opened storbing gate 24 and cut out simultaneously storbing gate 23, therefore view data can directly enter in the print data buffer area 22, under the control of microprocessor, printout mechanism 15 will print image restoring by the view data that it stored.In like manner, if select the modification pattern, microprocessor 26 can cut out storbing gate 24, and open storbing gate 23 simultaneously, and view data is input in picture editting's calculation mechanism 13, in order to the operator image is handled again, when needs reduce this data processed, can inform that microprocessor 26 opens storbing gate 25 and send view data to print data buffer area 22, for the reduction print image, and this moment, storbing gate 23,24 was all closed.

By the description to the digital copier principle of work, can summarize breadth, speed, resolution etc. is the parameter of weighing the digital copier quality, but the contrast of reference light drum-type duplicating machine.

Digital copier has high-quality photocopying effect, will have immeasurable value in fields such as printing, electronics, finance, public security and national defence.

Claims (2)

1. a digital copier comprises image scanning input mechanism (11), is used for the image scanning of duplicating original paper is converted into digital signal; Image print output mechanism (15) is used for the view data printing is reduced into image; Panel options input mechanism (14) is used for control and duplicates character; Picture editting's calculation mechanism (13) is used for view data is carried out the secondary processing editing and processing; Between image scanning input mechanism (11) and image print output mechanism (15), be connected with view data buffer area (12), be used for image data temporary, it is characterized in that: described view data buffer area (12) comprises first data buffer area (21), second data buffer area (22), first storbing gate (23), second storbing gate (24) and the 3rd storbing gate (25); The output terminal of the described scanning input mechanism of the input termination of described first data buffer area (21) (11), the output terminal of described first data buffer area (21) also connects first, second storbing gate (23,24) input end, the output terminal of described first storbing gate (23) also connects the I/O end of described picture editting's calculation mechanism (13) and the input end of the 3rd storbing gate (25), the input end of described second data buffer area (22) also connects second, the 3rd storbing gate (24,25) output terminal, the input end of the described image print output mechanism of the output termination of described second data buffer area (22) (15); And, described panel options input mechanism (14) can be input to described image scanning input mechanism (11), picture editting's calculation mechanism (13), image print output mechanism (15) and view data buffer area (12) according to each gating control signal that option will be exported respectively, or is input to described image scanning input mechanism (11), image print output mechanism (15) and view data buffer area (12) respectively.

2. a kind of digital copier according to claim 1 is characterized in that: described panel options input mechanism comprises microprocessor (26), first code translator (27), second code translator (28), by copy mode or gray scale preference pattern or dwindle pattern or option input key (29) that amplification mode constitutes and do duplicating or numerical value enter key (30) that modification, gray shade scale, magnification ratio, scale down are selected in each option pattern; The input end of the described microprocessor of output termination (26) of described first, second code translator (27,28), described option input key (29) connects the input end of first code translator (27), described numerical value enter key (30) connects the input end of second code translator (28), the described gating control signal of described microprocessor (26) output.

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