CN1155104A - Image forming device - Google Patents
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- CN1155104A CN1155104A CN 96118519 CN96118519A CN1155104A CN 1155104 A CN1155104 A CN 1155104A CN 96118519 CN96118519 CN 96118519 CN 96118519 A CN96118519 A CN 96118519A CN 1155104 A CN1155104 A CN 1155104A
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Abstract
Disclosed is an imaging apparatus, which can process the whole image concentration without a toner attached on a white image when the concentration of the image becomes bigger. The invention is controlled by a control part 304 and used to process the tonal gradation data read by a scanner into word modes or picture modes which are memorized into a memory as binary image values; according to the memorized binary image data and the concentration data operated by a concentration changing key, a semiconductor laser is driven by an image processing circuit of the laser printer and with the pulse width corresponding to the word mode and starting from the rising edge of a pixel or with the pulse width around the central part of each pixel and corresponding to the photo mode, and then a dense or light image is output from a printer.
Description
The present invention relates to a kind of such as the pictorial data that tonal gradation (gray scale) is arranged of coming in scanner reads first temporarily depositing in the storer after being transformed into 2 value pictorial data, when the 2 value pictorial data of being deposited are exported with laser printer, can change the image processing system of the digital copier and so on of whole image concentration.
In the past, the image processing system of laser printer and so on is owing to can not have medium tone (shadow tone) record in 1 point (dot) record, so merely 2 value ratios, imaging such as the pictorial data of the no tone rank character of literal, chart etc., and for the image that the tone equivalence is arranged of photo and so on, then used as this to keep the dither method or the area tonal gradation method of the long-pending formula of group of the gimmick of tonal gradation limit 2 values to come imaging.
In addition, recently, in laser printer, people have proposed (special hope flat 1-79571 number) and the pulse width of Laser Drive pulse have been done to become variable with repeatability that improves fine rule or the pulse-length modulation method that can show tonal gradation.
Yet, in having the digital copier of 2 value pictorial data being deposited the laser printer that goes in the storer, after the tonal gradation image transform of reading into scanner is become 2 values image, temporarily be saved in the storer earlier, and then 2 values of being preserved with laser printer output are visual the time, change under the situation of whole image concentration at concentration change button, adopt following such method with digital copier.
1. do not carry out concentration change (maybe can not change).
2. because the white/black minimum formation of laser printer is a pixel unit, so it is whole thin out wanting to make, will remove melanic center section, wanting to thicken then increases black pixel around black pixel, and such image processing is handled with software on storer.
3. change treatment conditions make it to increase and decrease whole toner adhesion amount and change concentration.
But, can not change this part thing of concentration and itself be exactly shortcoming, exist time taking shortcoming, the shortcoming of on the next white pixel that exists in background of situation that whole concentration is thickened, also adhering to toner with software processes.
As mentioned above, 2 value pictorial data are being deposited in the digital copier of storer, under the situation of the image concentration that changes whole image, exist and to change concentration, perhaps time-consuming in software processes, or when whole concentration is thickened, also adhere to the such problem of toner on the white image in background.
So, the purpose of this invention is to provide a kind of can change the image concentration of integral body handle and in processing spended time not, the also image processing system of adhering toner on white image not when concentration thickens.
Image processing system of the present invention is made of following apparatus during using the image processing system that forms image from the laser beam of semiconductor laser output: the memory storage of storage 2 value pictorial data; The indicating device of the concentration when the 2 value pictorial data of indication from be stored in this memory storage form image; Use by the indicated concentration data of this indicating device and be stored in the generation device that 2 value pictorial data in the above-mentioned memory storage produce the many-valued tonal gradation data of a pixel; Form the image processing system that forms image on the medium at the image of being supplied with according to many-valued tonal gradation data with the pixel that this generation device produced.
Image processing system of the present invention is using the laser beam from semiconductor laser output to form the image processing system of image, is made of following apparatus: the memory storage of storage 2 value pictorial data; The indicating device of the concentration of indication when 2 value pictorial data from be stored in this memory storage form image; Setting is by the concentration setting device of the indicated concentration data of this indicating device; From concentration data of setting by this concentration setting device and the generation device that has been stored in the many-valued tonal gradation data of the pixel of 2 value pictorial data generation the above-mentioned memory storage; According to control device by laser beam irradiation time of a pixel of the above-mentioned semiconductor laser of many-valued tonal gradation Data Control of the pixel that this generation device produced; The irradiation time of controlling a pixel of above-mentioned semiconductor laser with this control device forms visual image processing system to form at the image of being supplied with on the medium.
Image processing system of the present invention is made of following apparatus during using the image processing system that forms image from the laser beam of semiconductor laser output: the memory storage of storage 2 value pictorial data; The indicating device of the concentration when the 2 value pictorial data of indication from be stored in this memory storage form image; Setting is by the concentration setting device of the indicated concentration data of this indicating device; From the concentration data that sets by this concentration setting device be stored in 2 value pictorial data the above-mentioned memory storage, be created in the concentration of the white pixel adjacent with 1 black pixel is thickened, under thin out situation, make the generation device of the many-valued tonal gradation data of 1 thin out pixel of the concentration of 1 black pixel itself; According to control device by 1 pixel laser beam irradiation time of the above-mentioned semiconductor laser of many-valued tonal gradation Data Control of 1 pixel that this generation device produced; The laser beam irradiation time of controlling 1 pixel of above-mentioned semiconductor laser with this control device forms the image processing system that forms image on the medium at the image of being supplied with.
Image processing system of the present invention is made of following apparatus the image processing system of using the image formation medium formation image of being supplied with from semiconductor laser: the memory storage of storage 2 value pictorial data; The indicating device of the concentration when the 2 value pictorial data of indication from be stored in this memory storage form image; Set concentration setting device with the indicated concentration data of this indicating device; From the concentration data that sets by this concentration setting device be stored in 2 value pictorial data the above-mentioned memory storage, be created in the concentration of the white pixel adjacent with black pixel is thickened, when making it thin out, make the generation device of the many-valued tonal gradation data of 1 thin out pixel of the concentration of a black pixel itself; Drive the pulse width modulation device of the driving pulse of semiconductor laser according to many-valued tonal gradation data-modulated by 1 pixel that this generation device produced; Use the laser drive that drives above-mentioned semiconductor laser by the pulse width after this pulsed modulation device modulates.
Image processing system of the present invention is made of following apparatus the image processing system of using the image formation medium formation image of being supplied with from the laser beam of semiconductor laser output: the memory storage of storage 2 value pictorial data; The indicating device of the concentration when the 2 value pictorial data of indication from be stored in this cryopreservation device form image; Setting is by the concentration setting device of the indicated concentration data of this concentration indicating device; From the concentration data that sets by this concentration setting device be stored in 2 value pictorial data the above-mentioned memory storage, be created in the white pixel adjacent with black pixel thickened, when making it thin out, make the generation device of the many-valued tonal gradation data of a thin out pixel of black pixel itself; According to use the pulse width modulation device that drives the driving pulse of semiconductor laser since the pulse-length modulation of the rising edge of a pixel by the many-valued tonal gradation data of 1 pixel that this generation device produced; Use the laser drive that drives above-mentioned semiconductor laser by the pulse width after this pulsed modulation device modulates.
Image processing system of the present invention is made of following apparatus the image processing system of using the image formation medium formation image of being supplied with from the laser beam of semiconductor laser output: the memory storage of storage 2 value pictorial data; The indicating device of the concentration when 2 values of indication from be stored in this memory storage form image; Set with the indicated concentration data of this indicating device dense and decide setting device; From the concentration data that sets by this concentration setting device be stored in 2 value pictorial data the above-mentioned memory storage, be created in and make under the situation that overall density thickens, the concentration of the adjacent white pixel of 1 black pixel is thickened, at the generation device of the many-valued tonal gradation data that make it 1 thin out pixel of the next concentration that makes 1 black pixel itself of thin out situation; Is the width modulated device that the pulse width at center is modulated the driving pulse that drives above-mentioned semiconductor laser according to the many-valued tonal gradation data of 1 pixel that is produced by this generation device in order to the centre of each pixel; With the laser drive that drives above-mentioned semiconductor laser with the pulse width after this pulse width modulation device modulation.
Image processing system of the present invention is made of following apparatus the image processing system of using the image formation medium formation image of being supplied with from the laser beam of semiconductor laser output: the memory storage of storage 2 value pictorial data; The indicating device of the concentration when the 2 value pictorial data of indication from be stored in this memory storage form image; Set concentration setting device with the indicated concentration data of this indicating device; From the concentration data set by this setting device be stored in 2 value pictorial data the above-mentioned memory storage and be created in the concentration of the white pixel adjacent with 1 black pixel is thickened, at the generation device of the many-valued tonal gradation data that make it 1 thin out pixel of the next concentration that makes a black pixel itself of thin out situation; Use since the 1st pulse width modulation device of the driving pulse of the pulse-length modulation drive laser of the rising edge of 1 pixel according to the many-valued tonal gradation data of 1 pixel that produces by this generation device; According to many-valued tonal gradation data, in order to the pixel centre of each pixel the 2nd pulse width modulation device of driving pulse of the pulse-length modulation drive laser at center with 1 pixel that above-mentioned generation device produced; Select the selecting arrangement of the 2nd pulse width modulation device and above-mentioned the 1st pulse width modulation device; Drive the laser drive of above-mentioned semiconductor laser with the pulse width after above-mentioned the 1st pulse width modulation device of being selected by this selecting arrangement or the modulation of the 2nd pulse width modulation device.
Image processing system of the present invention is made of following apparatus during using the image processing system that forms image from the laser beam of semiconductor laser output: the reading device that reads the image of original copy; The tonal gradation pictorial data of coming in this readout means reads is transformed into the converting means of 2 value pictorial data; Store memory storage with 2 Value Datas after this converting means conversion; The indicating device of the concentration when the 2 value pictorial data of indication from be stored in this memory storage form image; Set concentration setting device with the indicated concentration data of this indicating device; The concentration data that sets from this setting device and be stored in the generation device that 2 value pictorial data the above-mentioned memory storage produce the many-valued tonal gradation data of 1 pixel; Control device according to laser beam irradiation time of 1 pixel of the above-mentioned semiconductor laser of many-valued tonal gradation Data Control of 1 pixel that produces with generation device; Control laser beam irradiation time of 1 pixel of above-mentioned semiconductor laser with this control device, form the image processing system that forms image on the medium at the image of being supplied with.
Image processing system of the present invention is made of following apparatus during using the image processing system that forms image from semiconductor laser: linked on the public line and the receiving trap of the 2 value pictorial data that the machine of receiving faxes sends; Store the memory storage of the 2 value pictorial data that receive with this receiving trap; The indicating device of the concentration when indication forms image from depositing 2 value pictorial data the memory storage; Set concentration setting device with the indicated concentration data of this indicating device; From concentration data of setting by this setting device and the generation device that has been stored in the many-valued tonal gradation data of 1 pixel of 2 value pictorial data generation the above-mentioned memory storage; Control device according to laser beam irradiation time of 1 pixel of the above-mentioned semiconductor laser of many-valued tonal gradation Data Control of 1 pixel that produces with the hut generation device; Control laser beam irradiation time of 1 pixel of above-mentioned semiconductor laser with this control device, form the image processing system that forms image on the medium at the image of being supplied with.
Image processing system of the present invention is made of following apparatus during using the image processing system that forms image from the laser beam of semiconductor laser output: linked the receiving trap that also receives the 2 value pictorial data that send on the LAN circuit; Store memory storage with the 2 value pictorial data that this receiving trap received; The indicating device of the concentration when the 2 value pictorial data of indication from store above-mentioned memory storage into form image; Set concentration setting device with the indicated concentration data of this indicating device; From concentration data that sets by this concentration setting device and the generation device that has been stored in the many-valued tonal gradation data of 1 pixel of 2 value pictorial data generation the above-mentioned memory storage; According to control device with laser beam irradiation time of a pixel of the above-mentioned semiconductor laser of many-valued tonal gradation Data Control of 1 pixel that this generation device produced; Control with this control device above-mentioned semiconductor laser 1 pixel the laser beam irradiation time and the image processing system that forms image on the medium is provided at the image that provided.
Image processing system of the present invention is made of following apparatus during using the image processing system that forms image from the laser beam of semiconductor laser output: the reading device that reads original image; The tonal gradation data of being read by this reading device are transformed into the 1st converting means of 2 value pictorial data as type mode; The tonal gradation pictorial data of being read by above-mentioned reading device is transformed into the 2nd converting means of 2 value pictorial data as picture mode; The 1st selecting arrangement that the 2nd converting means and above-mentioned the 1st converting means are selected; Storage is used by the memory storage of 2 value pictorial data of selected the 1st converting means of this selecting arrangement or the 2nd converting means conversion; The 1st indicating device of the concentration when the 2 value pictorial data of indication from be stored in this memory storage form image; Set concentration setting device with the indicated concentration data of the 1st indicating device; The concentration data that sets from this concentration setting device and be stored in the generation device that 2 value pictorial data the above-mentioned memory storage produce the many-valued tonal gradation data of 1 pixel; According to use the 1st pulse width modulation device that drives the driving pulse of above-mentioned semiconductor laser since the pulse-length modulation of the rising edge of 1 pixel with the many-valued tonal gradation data of 1 pixel that this generation device produced; According to being the 2nd pulse width drive unit that the pulse-length modulation at center drives the driving pulse of semiconductor laser in order to the pixel centre of per 1 pixel with the many-valued tonal gradation data of 1 pixel that above-mentioned generation device produced; The 2nd selecting arrangement that the 2nd pulse width modulation device and above-mentioned the 1st pulse width modulation device are selected; With the laser drive that is driven above-mentioned semiconductor laser by the pulse width after selected the 1st pulse width modulation device of this selecting arrangement or the modulation of the 2nd pulse width modulation device; Indicate general the 2nd indicating device of above-mentioned the 1st selecting arrangement and the 2nd selecting arrangement.
Following accompanying drawing is carried out simple declaration.
The integral body that the block scheme of Fig. 1 shows the digital copier of image processing system of the present invention constitutes.
The integral body that Fig. 2 diagrammatically shows as the digital copier of image processing system constitutes.
Fig. 3 shows the concentration change button as the part of control panel.
The summary that Fig. 4 shows the inside of laser printer constitutes.
Fig. 5 shows the formation that 2 value pictorial data is transformed into the part of multi-valued image data, and this part is the part that the inside of image processing circuit constitutes.
Fig. 6 shows the signal transformation table in the code translator.
Fig. 7 show continuously side by side during 2 black pixels, the pixel concentration of adjacent image point change under the situation that concentration is thickened.
Fig. 8 shows and uses the conversion of carrying out from the signal transformation of code translator from the laser instrument on/off pulse of the multi-valued image data of 1 pixel.
The summary that Fig. 9 shows the processing section of laser printer used in the digital copier 1 constitutes.
Figure 10 shows the relation of laser instrument fluorescent lifetime and lettering state.
Figure 11 shows with pulse-length modulation and changes the laser irradiation time of photographic drum so that the situation of concentration change.
Figure 12 shows with the pulse-length modulation change and shines the laser irradiation time of past photosensitive drums so that the situation of concentration change.
Figure 13 shows the lettering state of a pixel unit of the half tone image that carries out with error-diffusion method.
Figure 14 shows the lettering state of 1 pixel unit of the half tone image that carries out with error-diffusion method.
Figure 15 is used to illustrate the process flow diagram that carries out the action of concentration change in laser printer inside.
Figure 16 shows 2 value pictorial data are deposited toward the integral body of the digital copier of the band FAX plate of storer and constitutes.
Figure 17 shows 2 value pictorial data are deposited toward the integral body of the digital copier of the band LANI/F of storer and constitutes.
Figure 18 shows the mode initialization button as the part of control panel.
Figure 19 shows the selection of the inner image processing circuit of image processing part.
Figure 20 shows the selection of the pulse width modulation circuit of pulse width modulation circuit inside.
Figure 21 shows the method for the image processing mode data keeping of the page or leaf unit when with the image processing part pictorial data of coming in scanner reads having been carried out image processing to the storer top.
Embodiment
Below referring to accompanying drawing one embodiment of the present of invention are described.
The integral body that Fig. 2 is shown schematically in as the digital copier of image processing system of the present invention constitutes.Digital copier 1 has as the scanner 140 of reading device with as the laser printer 160 of image processing system, auto document is installed on top send original text device ADF (AutoDocument Feeder) 180.
The 60th, semiconductor laser disposes collimation lens 62, polygonal mirror 64, lens 66, catoptron 68,70 and lens 72 accordingly with this semiconductor laser 60, and constitutes laser beam is shone on the photosensitive drums 50 from exposure device 52.
Then; the electrostatic latent image that has been formed at photosensitive drums 50 tops develops with developing apparatus 54; duplicate with duplicating charger 55 in the copy paper P top of being situated between paper feeding for carton 30 that is used as the paper feeding device that to say the back with protective seam roller (registerroller) 20; be situated between again with the carrying transferring belt conveyance to fuser 72, the copy paper P that developed image carried out dissolving after the photographic fixing be expelled on the discharge tray 74 with arranging paper pair roller 073 with this fuser.On the other hand, developed image is duplicated photosensitive drums 50 usefulness of above-mentioned copy paper P after going up remove bulb 56 and remove electricity, and be not replicated and remain in the residual developer of photosensitive drums 50 tops, make it to carry out next one duplicating and move with cleaner 57 cleanings.
In addition, 30 is to carton among the figure, can load and unload from front one side of said apparatus main body multilayer up and down freely is installed.Should be made up of as the paper feeding carton and crate 31 of the basket of taking in copy paper P this to carton 30, the taking-up end of this casing 31 is constituted as to the copy paper removing direction.So, be incorporated in the above-mentioned casing 31 interior copy paper P of carton 30 that give just can pick up and take out from the superiors with pick-up roller 81.Taken out and be admitted to the copy paper P of taking-up end one side of above-mentioned boxlike casing 31 with this pick-up roller 81, with the copy paper separating part by the feed roll 84 of the inside front of the taking-up end that is arranged on above-mentioned boxlike casing 31 and separate roller (or separating table (pad)) 85 formations be separated into each one piece be sent to laser printer 160,
Fig. 1 shows the formation of integral body of the digital copier 1 of image processing system of the present invention.That is, digital copier 1 by the scanner 140 that reads in pictorial data, the image processing part 301 that is used for the manuscript image data, as the storer 303 of the memory storage that is used to store the pictorial data after processing is handled, be used for being printed on laser printer 160 on the paper, being used for from the control panel 305 of the action of peripheral operation digital copier 1 and scanner 140, image processing part 301, laser printer 160, storer 303, control panel 305 are carried out central controlled control section 304 constituting processing the pictorial data of handling.
Fig. 3 shows the concentration change button 501 as the part of control panel 305.Concentration change button 501 as indicating device has 7 buttons, and with selecting concentration by the way of giving as security button.Have LED on the button, the bright lamp of LED of a button in 7 selected buttons is to inform the user to the concentration of being chosen.
Common optional 4 these buttons.4 these buttons are represented normal concentration.The numeral of selected key is just lighter more than normal concentration than the concentration of the 4 more little words of then printing, and the numeral of selected key is bigger more than 4, and the concentration of the word that then prints is just dense more than normal concentration.
Usually when duplicating, control section 304 is not sent to image processing part 301 to the multi-valued image data that reads in scanner 140 with not adding processing, is for conversion in image processing part 301 and changes the corresponding many-valued tonal gradation data of button 501 selected concentration with concentration and be sent to laser printer 160, laser printer 160 to print with the corresponding concentration of many-valued tonal gradation data.
Pictorial data is temporarily being deposited under the situation of storer 303, for the multipage data are deposited in storer 303, the storer 303 of after being transformed into 2 value pictorial data, restoring with image processing part 301.
In addition, when depositing 2 value pictorial data in the storer 303,, when many-valued logic is 2 values, use in image processing part 301,2 value pictorial data of a pixel are transformed into black data and white data than the constant dense or light way of concentration benchmark multi-value data.Concentration change button 501 is want this concentration benchmark multi-value data beaten to such an extent that will increase in light when printing, and will reduce wanting that the situation that makes it dense is next.
In the past, temporarily store 2 value pictorial data in the storer 303 into when printing with laser printer 160, because 1 pixel is or black or this two image value data in vain, thus under the situation that intactly is sent to laser printer 160, concentration change button just become invalid.
Perhaps, with software the 2 value images that store in the storer 303 are handled, when the selection of continuing to use concentration change button 501 is desired to make it to thicken, the part of white pixel is transformed into black pixel, thereby when desiring to make it thin out, the part of black pixel is transformed into white pixel and has changed whole gradation of drop-out colour, but owing to be software processes, so the handling time of one page is arranged, makes the slack-off shortcoming of print speed printing speed.
Also have, continue to use the treatment conditions of the selection change laser printer 160 of concentration change button 501, the whole lettering concentration of the adhesion amount change of increase and decrease toner on photosensitive drums 50, but under the situation that whole concentration is thickened, the shortcoming that has the white pixel of the background of making also to adhere to toner.
So the present invention is sent to laser printer 160 to the resulting concentration data of selection with concentration change button 501 as the change concentration data in order to solve these shortcomings, make that carrying out concentration in the inside of laser printer 160 changes.
Secondly, the formation to laser printer 160 of the present invention describes.
The summary that Fig. 4 shows laser printer 160 inside constitutes.
At first, 2 value pictorial data ID that transmitted by image processing part 301 and transmission clock ICLK input to interface (I/F) 100 synchronously and get on.In visual I/F100,2 value pictorial data as being sent to image processing circuit 101 with the synchronous 2 value pictorial data VD of the transmission clock VCLK of laser printer 160 inside.
In image processing circuit 101, export drive circuit for laser 102 to after with drive circuit for laser 102 2 value pictorial data VD being transformed into the pulse signal LD that is used to make semiconductor laser 60on/off.In drive circuit for laser 102, regularly make semiconductor laser 60on/off with the on/off of pulse signal LD.The laser beam that comes from semiconductor laser 60 output is rotated in photosensitive drums 50 scannings by means of polygonal catoptron 64.Photosensitive drums 50 tops that are rotated in by means of photosensitive drums 50 form the 2 dimension electrostatic latent images that form with laser beam.The processing that will say with the back at the electrostatic latent image of photosensitive drums 50 tops formation forms toner image in copy paper P top.
In semiconductor laser 60 inside, the photodiode of the power of monitoring laser light beam is arranged.The photodiode of monitored device is transformed into the strong and weak return laser light device driving circuit 102 of the laser beam of electric signal, as the stable output of feedback signal with the maintenance laser beam.
Also having both the driving circuit that the polygonal motor that makes polygonal catoptron 64 rotations is arranged as drive circuit for laser 102 inside of laser drive.
Be input in the photodiode 106 by polygonal catoptron 64 laser light reflected light beams and go, produce horizontal-drive signal HSYN.Horizontal-drive signal HSYN forms waveform and exports image processing circuit 101, visual I/F100 and image processing part 301 to as horizontal-drive signal LHSYN in drive circuit for laser 102, as the horizontal-drive signal of pictorial data.
Import vertical synchronizing signal IVSYN from image processing part 301 to visual I/F100, and input to image processing circuit 101 and control circuit 109 as the vertical synchronizing signal VSYN that in laser printer 160, uses.In image processing part 301 pictorial data and vertical synchronizing signal IVSYN and the horizontal-drive signal LHSYN synchronous driving visual I/F100 to the laser printer 160.
From visual I/F100 pictorial data and vertical synchronizing signal VSYN and horizontal-drive signal LHSYN synchronous driving to image processing circuit 101.Vertical synchronizing signal VSYN is to control circuit 109 inputs, as the time alignment of paper carrying.
Fig. 5 shows the formation that 2 value pictorial data is transformed into the part of multi-valued image data as the part of the inside formation of image processing circuit 101.
The 2 value pictorial data that send from image processing part 301 are transformed into the synchronous signal with visual clock VCLK (1 cycle of 1 pixel) in laser printer 160 inside, and are latched in trigger 400.Latch in addition in trigger 402.
Be latched the pictorial data among trigger 400 and trigger 402, if the pictorial data of trigger 400 is decided to be the n pictorial data, what then latch in the trigger 402 is n-1 number pictorial data.
The pictorial data of n number and n-1 number, the concentration that is set on the register 401 according to the concentration change button 501 selected change concentration datas on the control panel 305 in control circuit 109 handles changes data D (2: 0), and uses code translator 403 to be transformed into multi-valued image data.It is synchronous with visual clock VLCK that trigger 404 is used to make it.
Multi-valued image data is transformed into the Laser Drive on/off signal of the pulse width with 1 pixel unit by pulse width modulation circuit 405.Drive circuit for laser 102 usefulness laser instrument on/off signals produce will shine the laser beam from semiconductor laser 60 that photosensitive drums 50 gets on.
Fig. 6 shows the signal transformation table in the code translator 403.2 value pictorial data " 1 " expressions are black, and " 0 " expression is white.The change concentration data of the X direction in the pictorial data of n number and n-1 number, " 4 " expression normal concentration (no concentration change), picture " 3 ", " 2 ", the more little then concentration of " 1 " this sample value will become light more, and picture " 5 ", " 6 ", the big more then concentration of " 7 " this sample value just become dense more.
Carry out the value of multi-valued image data " 0 "～" 4 " of the value of conversion and 1 pixel with code translator 403.Here, the concentration of 1 pixel unit represents the length T of 1 pixel laser irradiation time is divided into the value " 0 " of 5 steps: 0/4*T, " 1 ": 1/4*T.“2”：2/4*T、“3”：3/4*T、“4”：4/4*T。But, cut apart also can not be equally spaced, to cut apart number also can not be 5 steps.
Fig. 7 shows at two black pixels continuously side by side the time, the pixel concentration change situation of adjacent image point under the situation of desiring to make concentration to thicken.Fig. 7 (a) expression be before the change, pixel (1) and (2) are black pixel, pixel (3) is a white pixel.
Shown in Fig. 7 (b), a part of blackening of adjacent image point (2) when pixel (1) being carried out the concentration change, shown in Fig. 7 (c), when pixel (2) being carried out the concentration change, 1 part blackening of adjacent image point (3).
Shown in Fig. 7 (c), concentration change result to pixel (1), (2) becomes to making 2 to lump together, but because pixel (2) was exactly a black pixel before concentration change, so the concentration that the concentration of pixel (1) is changed caused pixel (2) changes and can ignore.
Fig. 8 show use from the signal transformation of the code translator in the pulse width modulation circuit 405 403 carry out from the conversion of the multi-valued image data of 1 pixel output to laser instrument on/off pulse.Fig. 8 (a) shows visual clock VCLK, and Fig. 8 (b) shows the synchronous pictorial data with visual clock VCLK.
Produce laser instrument on/off signal as the pulse width modulation circuit 405 of modulating device for the value of multi-valued image data " 0 "～" 4 " of 1 pixel that carried out conversion with code translator 403.In Fig. 8 (c), " 0 " this no laser pulse on time of value, along with the numerical value of data increases to " 4 " from " 1 ", laser instrument admittance time con increases down, and 1 pixel irradiation time of conducting is so long when " 4 ".Along with the increase of the length of on time of laser instrument, the picture of black part will constantly increase under n pixel lettering state.
Fig. 9 shows the summary formation of the processing section of laser printer used in the digital copier 1 160.
When forming image, photosensitive drums 50 is rotated and by making its surface charged equably when the charged charger 59.On charged photosensitive drums 50, laser beam 203 shines according to pictorial data and makes it and exposes.The surface potential of the photosensitive drums 50 that the Stimulated Light light beam shone changes, and forms and the corresponding latent image of pictorial data.This latent image is provided with toner when by developing apparatus 54, but becomes the video for having developed.
In addition, when being provided with copy paper P from paper feeding part (not shown) and being moved on the duplicating charger 55, but the video (toner picture) on the photosensitive drums 50 of carrying out developing with developing apparatus 54 is replicated on the copy paper P with duplicating charger 55.But the copy paper P that has been replicated video is carried on the fuser of saying the top 72, and the toner on the copy paper P is made it photographic fixing on copy paper P as heating and pressurizing.
Figure 10 shows the relation of lasing fluorescence time and lettering state.Promptly in the 2 value pictorial data on the sort of storer 303 shown in Figure 10 (a), under the situation of 2 value pictorial data having been carried out the concentration change with pulse-length modulation, compare with the laser instrument fluorescent lifetime and the lettering state that do not carry out concentration when change, show the laser instrument fluorescent lifetime and the lettering state that make under the situation that concentration thickens, laser instrument fluorescent lifetime and lettering state with making concentration under the thin out situation.
Shown in Figure 10 (b), do not carrying out concentration when change, only in the time of laser scanning black pixel, just making laser instrument luminous.In the processing of laser printer 160, then only make it adhering toner just now and blackening on the ground that photosensitive drums 50 tops were shone at laser.So, as long as treatment conditions are proper, the area suitable with 1 pixel will blackening.In the drawings the black pixel model utility be expressed as the square of 1 pixel.
Shown in Figure 10 (c), under the situation of desiring to make concentration to thicken, adjacent image point, the next pixel that will scan for laser along main scanning direction is only used half time of the amount of a pixel of laser radiation laser scanning in this case.So, be originally white pixel adjacent image point only half area of a pixel be printed as black.
Shown in Figure 10 (d), make under the thin out situation of concentration, adopt to make half way of the time decreased of laser radiation black pixel part the area of seal surplus reduce half.
As mentioned above, under the situation that concentration is thickened, reduced to half of time of 1 pixel the time of laser radiation adjacent image point, make under the thin out situation of concentration, reduced to half of irradiation time of a pixel time of laser radiation black pixel part, and be that degree step ground with the concentration change changes laser irradiation time to change black lettering area in the present embodiment.
Figure 11, Figure 12 show in order to make concentration change change the situation of shining to the laser irradiation time of photosensitive drums 50 with pulse-length modulation.Under the situation of normally duplicating, for the irradiation time of a pixel share of black pixel irradiation.
Make it under the thin out situation with 3 Change of Class irradiation times.Want to make it lighter, then will contract the pulse irradiation time shortlyer, the toner adhesion amount is reduced to still less.
Under the situation that makes it to thicken, the laser irradiation time of black pixel is a pixel share equally, and the laser irradiation time of adjacent image point is then used 3 change of rank.Want to make it denseer, will elongate laser irradiation time, increase the toner adhesion amount of adjacent image point.
Figure 11 shows the method that black part is increased from the left end portion of 1 pixel.For the word graph situation that will keep the sharpness of marginal portion like that is effectively, owing to be adjacent to increase black part with black pixel, so the edge can be not smudgy.
In addition, the change concentration data being expressed as 1～7 grade class 4 is the standard of not carrying out the concentration change.Begin to 1 to set digital more little then lightly more from class 4, set big more then densely more from class 4 to 7 numerals.Such as laser pulse will become minimum under the situation of the grade 1 that changes concentration data, and the lettering state also fills up the left side on the figure and becomes minimum (the lightest).In contrast, under the situation of the grade 7 that changes concentration data, it is maximum that laser pulse will become, and the lettering state also fills up the left side on the figure and becomes maximum (the denseest).
Figure 12 shows the black part method that begins to increase from central division that makes.Under the situation about handling in the site of carrying out photo image and so on is effectively because black pixel is not concentrated with adjacent image part in succession on the pixel that embeds spread out to die to see it is that a half-tone picture resembles on the whole.
Change concentration data Fig. 1～7 expressions, class 4 is the standard of not carrying out the concentration change.Begin to 1 from class 4, numeral is set more little then lightly more, begins to 7 from class 4, and numeral is set to such an extent that then become dense more greatly more.Such as under the situation of grade 1 of change concentration data, laser pulse becomes minimum in the central authorities of pixel, and the lettering state is also in pixel central authorities and become minimum (the lightest).In contrast, be that laser pulse becomes maximum altogether to the central authorities of this pixel and adjacent image point under 7 the situation in the grade of change concentration data, the lettering state also becomes maximum (the denseest) to the central authorities of this pixel and adjacent image point altogether.
Figure 13,14 shows the lettering state of 1 pixel unit of the half tone image that obtains with error-diffusion method.
Figure 13 (a) and Figure 14 (a) show the lettering state under standard (grade), owing to be black and white just for each half image concentration, carry out alternately with 1 pixel unit so lettering is a B﹠W.
When using pulse-length modulation that it is carried out the concentration change, set big value to make it becoming more black according to concentration change grade pulse-width for adjacent image.(b) of Figure 13, Figure 14, (c) show the lettering state for the change concentration data, and variation has taken place the area of white and black, shows medium tone.
Figure 13 as being shown in Figure 11, shows the situation that makes the black part method that the left end portion of pixel increases since 1.Promptly, as class 4, Figure 13 (b) shows thin out situation with the standard that is shown in Figure 13 (a), and thin out successively with the order of the grade 1,2,3 of change concentration data, and Figure 13 (c) illustrates is situation about thickening, and thickens with the class 5,6 of change concentration data, 7 order.
Figure 14 as shown in Figure 12, shows the situation that makes the method that black part increases from the centre of 1 pixel.Promptly, with the standard that is shown in Figure 14 (a) is class 4, and Figure 14 (b) shows thin out situation, and thin out with the order of grade 1,2,3 of change concentration data, Figure 14 (c) shows situation about thickening, and thickens with the class 5,6 of change concentration data, 7 order.
Secondly, to in such formation, use the digital copier 1 that constitutes as inscape with laser printer 160, when the 2 value pictorial data of temporarily depositing past storer 303 are used laser printer 160 letterings, the concentration data that selection with concentration change button 501 is obtained is sent to laser printer 160 as the change concentration data and carries out the action of concentration change in laser printer 160 inside, describes referring to the process flow diagram of Figure 15.
At first, being sent to control section 304, transmit toward laser printer 160 (ST2) from control section 304 again with the resulting concentration change data of wishing of the selection (ST1) of the change of the concentration on the control panel 305 button 501 as the user of service.
In laser printer 160 inside, control circuit 109 is accepted the change concentration data, and control circuit 109 passes on toward image processing circuit 101 again.In image processing circuit 101 inside, the change concentration data is sent to that register 401 latchs and as concentration change data D (2: 0) and code translator 403 inputs (ST3).
Be input to 2 value pictorial data n of code translator 403, n-1 is latch its 2 value pictorial data to latch with trigger 402 with trigger 400 via the 2 value pictorial data VD that image processing part 301 sends from storer 303.
From 2 value pictorial data n, n-1 and these two data of concentration change data D (2: 0).Make the multi-valued image data (ST4) that produces 1 pixel as the code translator 403 of generation device.
The multi-valued image data of 1 pixel latchs in trigger 404 and is input to pulse width modulation circuit 405.The multiple value image numerical value of 1 pixel that pulse width modulation circuit 405 usefulness are imported is divided into 5 grades to laser instrument conducting (on) time of 1 pixel, and the concentration of 5 grades is exported resulting laser instrument on/off signal LD exports drive circuit for laser 102 (ST5) to.
Drive circuit for laser 102 according to the laser instrument on/off signal of having imported drive semiconductor laser 60 (ST6), from the laser beam irradiation of semiconductor laser 60 on photosensitive drums 50, and, on copy paper, just can obtain meeting the toner concentration image (ST7) of laser instrument ON time by means of electronic camera technology.
According to above-mentioned action, 301 pairs of tonal gradation pictorial data of reading in from scanner 140 of control section 304 usefulness image processing parts are processed and are handled and be stored in the storer 303 as 2 value pictorial data, operation with the 2 value pictorial data that are stored in the storer 303 change button 501 by the concentration on the control panel 305 can get dense or light image output from laser printer 160.
Figure 16 shows 2 value pictorial data is deposited toward the formation of the integral body of the digital copier 200 of the band FAX plate of storer.That is, replace the scanner 140 in the digital copier 1 be shown in Fig. 1 and connected the formation of the digital copier of FAX plate.Also have, the formation identical with the digital copier 1 that is shown in Fig. 1 invests identical label and removes explanation from.
Figure 17 shows 2 value pictorial data is deposited toward the formation of the integral body of the digital copier 300 of the band LANI/F of storer.That is, need not be shown in the scanner 140 in the duplicating machine 1 of Fig. 1 and replace to connect and go up LAN interface (I/F).In addition, invest identical label and exempt from explanation for those formations identical with the digital copier 1 that is shown in Fig. 1.
Figure 18 shows the mode initialization button 920 as the part of control panel 305.Inner in image processing part 301 owing to depending on that original copy is that character and picture or photographic image processing method are different, so the user of service presses mode initialization button 920 to select type mode or picture mode.
In mode initialization button 920 as selecting arrangement, in keep LED, constitute the bright lamp of the LED that makes selected button, it is selected to make which pattern the user of service can differentiate.Initial value is a type mode, and when selecting picture mode, the LED of type mode turns off the light, the bright lamp of the LED of picture mode.Conversely, in the bright lamp of the LED of picture mode if select type mode then the LED of picture mode turn off the light the bright lamp of the LED of type mode.
Figure 19 shows the selection of the image processing circuit in image processing part 301 inside.After reading, the data Be Controlled part 304 of the pattern of choosing with mode initialization button 920 select data latching in trigger 913 as image processing circuit.Latch data is as selecting the selector switch 912 of signal 914 controls to selecting from the visual numerical value of 2 values of type mode image processing circuit 910 and picture mode image processing circuit 911.When signal is " 0 ", selects signal 914 to select the output of type mode image processing circuit 910, and when signal is " 1 ", then select the output of picture mode image processing circuit 911.
Type mode image processing circuit 910 as the 1st converting means is transformed into 2 value pictorial data to the multi-valued image data from scanner 104 as type mode.
Picture mode image processing circuit 911 as the 2nd converting means is transformed into 2 value pictorial data to the multi-valued image data from scanner 104 as picture mode.
Selected 2 value pictorial data are transferred into storer 303.
Figure 20 shows the selection of the pulse width modulation circuit of pulse width modulation circuit 405 inside.Be sent to the control circuit 109 in the laser printer 160 after the data Be Controlled part 304 of the pattern of choosing with mode initialization button 920 reads, select it data latching in trigger 903 as modulation circuit with control circuit 109 again.
Latch data is as selecting the selector switch 902 of signal 904 controls to selecting from the pulse signal of pulse width modulation circuit 900 and pulse width modulation circuit 901.When signal is " 0 ", select output, the then output of strobe pulse width modulation circuit 901 when signal is " 1 " of signal 904 strobe pulse width modulation circuits 900.
As the pulse width modulation circuit 900 of the 1st pulse width adjusting gear is to use the pulse width adjusting circuit of the driving pulse that drives semiconductor laser 60 being modulated since the pulse width of the rising edge of 1 pixel.By the pulse width modulation circuit 901 as the 2nd pulse width modulation device is that centre in order to each pixel is the pulse width at center, the pulse width modulation circuit that the driving pulse that drives semiconductor laser 60 is modulated.Chosen pulse signal LD is sent to drive circuit for laser 102.
The user of service can the strobe pulse width modulation circuit when printing the 2 value pictorial data of having deposited on the storer 303 with laser printer 160.That is, becoming 2 value pictorial data for the many image transforms of those literal and stored data in the storer 303 into can strobe pulse width modulation circuit 900 and the many image transforms of those medium tones are become 2 value pictorial data and the data that stored in the storer 303 can strobe pulse width modulation circuit 901.
Therefore, keep to select under the situation of word graph marginal portion like that sharpness using the pulse width modulation circuit of modulating since the pulse width of the rising edge of 1 pixel 900 in desire, carrying out under the situation about handling the such site of photo image, is the pulse width modulation circuit 901 that the pulse width at center is modulated with the pixel centre with each pixel that black pixel is concentrated and prevent to produce More (Moire) then.
The method that the image processing mode data of the page or leaf unit when Figure 21 shows the pictorial data that reads with scanner 140 carried out image processing with image processing part 301 gets in storer 303 certainly.
On storer, got up by pipe for the data of " 0 " or " 1 " for page or leaf unit keeping sequence number on the storer as the image processing mode data." 0 " expression type mode, " 1 " expression picture mode.Pictorial data is being transformed into 2 value pictorial data via scanner 140 usefulness image processing parts 301 and is depositing when the storer 303, with 1 page be the unit branch unit management sequence number of gathering leaves of a book, and the image processing pattern of having carried out image processing with image processing part 301 is taken care of on storer 303 in the lump as image processing pattern on the storer.
By means of the initial button (not shown) of pressing on the control panel 305, the original copy that carries out with scanner 140 just reads in and has begun, but before this, the first read-in modes of control section 304 are set the state of buttons 920, and will it as expression be on the type mode or the storer of picture mode the image processing mode data with page or leaf unit's keeping sequence number by certainly on storer 303.
When page or leaf unit's keeping sequence number had been stored in the storer 303, each page unit that gives image was with different sequence numbers.Be eliminated reading under the situation of failure.In addition, also simultaneously deleted when from storer 303, removing 2 value pictorial data.
With image processing part 301 pictorial data of reading into scanner 140 is being become 2 value pictorial data and depositing after storer 303, under situation about printing with laser printer 160, selection signal 904 to the pulse width modulation circuit 900 in the pulse width modulation circuit 405 in the image processing circuit 101 of laser printer 160 and pulse width modulation circuit 901 are selected is produced by image processing mode data on the storer of taking care of in storer 303.
Adopt the way of using the image processing mode data that the pictorial data of being read in by scanner 140 has partly been carried out handling in image processing to select the pulse width modulation circuit of laser printer 160 like this, pattern in the time of just can automatically setting the pictorial data of carrying out with scanner 140 and read in changes mode initialization button 920 page by page and need not the user of service.At this moment, the mode initialization button 20 at control panel 305 has been used under the situation of personnel by mistake the setting that the mode initialization button 920 that can don't work carries out.
As discussed above, if adopt the embodiment of foregoing invention, owing to unlike prior art, carry out software processes, so can high speed printing, and owing to do not change treatment conditions, so can stably change concentration, can prevent that the such white image area of giving of prior art from adding that toner makes it to become the phenomenon of black part.
As above detailed description the in detail, if adopt the present invention, then can provide a kind of can be not time-consuming on handling.When concentration is thickened, also can not give white image adhere to toner, with regard to the variable image processing system of handling whole image concentration.
Claims (11)
1. image processing system forms image with the laser beam of semiconductor laser output, it is characterized in that having following apparatus:
Memory storage is used to store 2 value pictorial data;
Indicating device is used for indicating the concentration when forming image by the 2 value pictorial data that are stored in above-mentioned memory storage;
Generation device is used for producing from the indicated concentration data of above-mentioned indicating device and the 2 value pictorial data that have been stored in above-mentioned memory storage the many-valued tonal gradation data of 1 pixel;
Image processing system, the many-valued tonal gradation data of 1 pixel that is used for producing according to above-mentioned generation device form at the image of being supplied with and form image on the medium.
2. an image processing system is using the laser beam from semiconductor laser output to form the image processing system of image, and feature is to have following apparatus:
Memory storage is used to store 2 value pictorial data;
Indicating device, the concentration when being used for indicating the 2 value pictorial data of storing from above-mentioned memory storage to form image;
The concentration setting device is used to set with the indicated concentration data of above-mentioned indicating device;
Generation device is used for from the concentration data of above-mentioned concentration setting device setting and the many-valued tonal gradation data of having deposited 1 pixel of 2 value pictorial data generation of above-mentioned memory storage;
Control device was used for according to the laser beam irradiation time with a pixel of the above-mentioned semiconductor laser of many-valued tonal gradation Data Control of 1 pixel that above-mentioned generation device produced;
Image processing system, be used for above-mentioned control device control above-mentioned semiconductor laser a pixel the laser beam irradiation time and form at the image supplied with and to form image on the medium.
3. an image processing system is using the laser beam from semiconductor laser output to form the image processing system of image, and feature is to possess following apparatus:
Memory storage is used to store 2 value pictorial data;
Indicating device is used for indicating the concentration when the 2 value pictorial data that are stored in above-mentioned memory storage form image;
The concentration setting device is used to set with the indicated concentration data of above-mentioned indicating device;
Generation device, be used for from concentration data that sets by above-mentioned concentration setting device and the 2 value pictorial data that have been stored in above-mentioned memory storage, be created in the concentration of the white pixel adjacent with 1 black pixel is thickened, in the many-valued tonal gradation data that make it 1 thin out pixel of the next concentration that makes 1 black pixel itself of thin out situation;
Control device was used for according to the laser beam irradiation time with 1 pixel of the above-mentioned semiconductor laser of many-valued tonal gradation Data Control of 1 pixel that above-mentioned generation device produced;
Image processing system.Be used for controlling laser beam irradiation time formation image on the image formation medium of being supplied with of 1 pixel of above-mentioned semiconductor laser with above-mentioned control device.
4. an image processing system is using the image of being supplied with from the laser beam of semiconductor laser output to form the image processing system of medium formation image, and feature is to possess following apparatus:
Memory storage is used to store 2 value pictorial data;
Indicating device is used for indicating the concentration when the 2 value pictorial data that are stored in above-mentioned memory storage form image;
The concentration setting device is used to set with the indicated concentration of above-mentioned indicating device;
Generation device, be used for from above-mentioned concentration setting device concentration data that sets and the 2 value pictorial data that are stored in above-mentioned memory storage, be created in the concentration of the white pixel adjacent with 1 black pixel is thickened, make it the next many-valued tonal gradation data that make 1 thin out pixel of 1 black pixel itself of thin out situation;
Pulse width modulation device is used for according to the pulse width that drives the driving pulse of semiconductor laser with the many-valued tonal gradation data-modulated of 1 pixel that above-mentioned generation device produced;
Laser drive is used to drive above-mentioned semiconductor laser by the pulse width after the above-mentioned pulse width modulation device modulation.
5. an image processing system is using the image of being supplied with from the laser beam of semiconductor laser output to form the image processing system of medium formation image, and feature is to have following apparatus:
Memory storage is used to store 2 value pictorial data;
Indicating device is used for indicating the concentration when the 2 value pictorial data that are stored in above-mentioned memory storage form image;
The concentration setting device is used to set with the indicated concentration data of above-mentioned indicating device;
Generation device, be used for concentration data that sets from above-mentioned concentration setting device and the 2 value pictorial data that have been stored in above-mentioned memory storage, be created in the concentration of the white pixel adjacent with 1 black pixel is thickened, in the many-valued tonal gradation data of 1 thin out pixel of the concentration that makes it to make under the thin out situation 1 black pixel itself;
Pulse width modulation device is used for the driving pulse that drives above-mentioned semiconductor laser since the pulse-length modulation of the rising edge of 1 pixel according to using with the many-valued tonal gradation data of 1 pixel that above-mentioned generation device produced;
Laser drive is used to drive above-mentioned semiconductor laser by the pulse width after the above-mentioned pulse width modulation device modulation.
6. an image processing system is using the image of being supplied with from the laser beam of semiconductor laser output to form the image processing system of medium formation image, and feature is to have following apparatus:
Memory storage is used to store 2 value pictorial data;
Indicating device is used for indicating the concentration when the 2 value pictorial data that are stored in above-mentioned memory storage form image;
The concentration setting device is used to set with the indicated concentration data of above-mentioned indicating device;
Generation device, be used for concentration data that sets from above-mentioned concentration setting device and the 2 value pictorial data that have been stored in above-mentioned memory storage, be created in the concentration of the white pixel adjacent with 1 black pixel is thickened, make it under the thin out situation, make the many-valued tonal gradation data of 1 thin out pixel of the concentration of 1 black pixel itself;
Pulse width modulation device, the many-valued tonal gradation data of 1 pixel that is used for producing according to above-mentioned generation device are the driving pulse that the pulse-length modulation at center drives above-mentioned semiconductor laser in order to the pixel centre of per 1 pixel;
Laser drive is used to drive above-mentioned semiconductor laser by the pulse width after the above-mentioned pulse width modulation device modulation.
7. an image processing system is using the image of being supplied with from the laser beam of semiconductor laser output to form the image processing system of medium formation image, and feature is to have following apparatus:
Memory storage is used to store 2 value pictorial data;
Indicating device is used for indicating the concentration when the 2 value pictorial data that are stored in above-mentioned memory storage form image;
The concentration setting device is used to set with the indicated concentration data of above-mentioned indicating device;
Generation device, be used for being created in and make under the situation that whole concentration thickens from the concentration data that sets by above-mentioned concentration setting device and the 2 value pictorial data that have been stored in above-mentioned memory storage, the concentration of the white pixel adjacent with 1 black pixel is thickened, in the many-valued tonal gradation data of 1 thin out pixel of the concentration that makes it to make under the thin out situation 1 black pixel itself;
The 1st pulse width modulation device is used for according to the many-valued tonal gradation data with 1 pixel that above-mentioned generation device produced, and uses the driving pulse that drives above-mentioned semiconductor laser since the pulse-length modulation of the rising edge of 1 pixel;
The 2nd pulse width modulation device is used for according to the many-valued tonal gradation data with 1 pixel that above-mentioned generation device produced, and is the driving pulse that the pulse-length modulation at center drives above-mentioned semiconductor laser in order to the pixel centre of each pixel;
Selecting arrangement is used for above-mentioned the 2nd pulse width modulation device and above-mentioned the 1st pulse width modulation device are selected;
Laser drive is used to drive above-mentioned semiconductor laser by above-mentioned the 1st pulse width modulation device of above-mentioned selecting arrangement selection or the pulse width after the modulation of the 2nd pulse width modulation device.
8. an image processing system is using the laser beam from semiconductor laser output to form the image processing system of image, and feature is to have following apparatus:
Reading device is used to read the image of original copy;
Converting means is used for the tonal gradation pictorial data that reads from above-mentioned reading device is transformed into 2 value pictorial data;
Memory storage is used to store 2 value pictorial data with after the above-mentioned converting means conversion;
Indicating device is used for indicating the concentration when the 2 value pictorial data that are stored in above-mentioned memory storage form image;
The concentration setting device is used to set with the indicated concentration data of above-mentioned indicating device;
Generation device is used for the many-valued tonal gradation data that concentration data that sets from above-mentioned concentration setting device and the 2 value pictorial data that have been stored in above-mentioned memory storage produce 1 pixel;
Control device was used for according to the laser beam irradiation time with 1 pixel of the above-mentioned semiconductor laser of many-valued tonal gradation Data Control of 1 pixel that above-mentioned generation device produced;
Image processing system, be used for above-mentioned control device control above-mentioned semiconductor laser 1 pixel the laser beam irradiation time and form at the image supplied with and to form image on the medium.
9. an image processing system is using the laser beam from semiconductor laser output to form the image processing system of image, and feature is to have following apparatus:
Receiving trap has been linked on the public line and 2 value pictorial data that the machine of receiving faxes sends;
Memory storage is used to store the 2 value pictorial data that receive with above-mentioned receiving trap;
Indicating device is used for indicating the concentration when the 2 value pictorial data that are stored in above-mentioned memory storage form image;
The concentration setting device is used to set with the indicated concentration data of above-mentioned indicating device;
Generation device is used for from the many-valued tonal gradation data of the concentration data set by above-mentioned concentration setting device and 1 pixel of 2 value pictorial data generation of being stored in above-mentioned memory storage;
Control device is used for the laser beam irradiation time according to 1 pixel of the above-mentioned semiconductor laser of many-valued tonal gradation Data Control of 1 pixel that produces with above-mentioned generation device;
Image processing system, be used for above-mentioned control device control above-mentioned semiconductor laser 1 pixel the laser beam irradiation time and form at the image supplied with and to form image on the medium.
10. an image processing system is using the laser beam from semiconductor laser output to form the image processing system of image, and feature is to have following apparatus:
Receiving trap is by the 2 value pictorial data of being linked on the LAN circuit and reception sends;
Memory storage is used to store the 2 value pictorial data that receive with receiving trap;
Indicating device is used for indicating the concentration when the 2 value pictorial data that are stored in above-mentioned memory storage form image;
The concentration setting device is used to set with the indicated concentration data of above-mentioned indicating device;
Generation device is used for producing from the concentration data that set by above-mentioned concentration setting device and the 2 value pictorial data that have been stored in above-mentioned memory storage the many-valued tonal gradation data of 1 pixel;
Control device, the laser beam irradiation time of 1 pixel of the above-mentioned semiconductor laser of many-valued tonal gradation Data Control of 1 pixel that is used for producing according to above-mentioned generation device;
Image processing system is used for controlling above-mentioned semiconductor laser with above-mentioned control device and forms formation image on the medium to the laser beam irradiation time of 1 pixel and at the image of being supplied with.
11. an image processing system is using the laser beam from semiconductor laser output to form the image processing system of image, feature is to have following apparatus:
Reading device is used to read the image of original copy;
The 1st converting means is used for being transformed into 2 value pictorial data from the tonal gradation pictorial data that above-mentioned reading device read as type mode;
The 2nd converting means is used for being transformed into 2 value pictorial data from the tonal gradation pictorial data that above-mentioned reading device read as picture mode;
The 1st selecting arrangement is used for above-mentioned the 2nd converting means and above-mentioned the 1st converting means are selected;
Memory storage is used to store and uses by selected the 1st converting means of above-mentioned the 1st selecting arrangement or 2 value pictorial data after the 2nd converting means conversion;
The 1st indicating device is used for indicating the concentration when the 2 value pictorial data that are stored in above-mentioned memory storage form image;
The concentration setting device is used to set with the indicated concentration data of above-mentioned the 1st indicating device;
Generation device is used for producing from the concentration data that set by above-mentioned concentration setting device and the 2 value pictorial data that have been stored in above-mentioned memory storage the many-valued tonal gradation data of 1 pixel;
The 1st pulse width modulation device is used for according to the many-valued tonal gradation data with 1 pixel that above-mentioned generation device produced, and uses since the driving pulse of the moving above-mentioned semiconductor laser of pulse-length modulation of the rising edge of 1 pixel;
The 2nd pulse width modulation device is used for according to the many-valued tonal gradation data with 1 pixel that above-mentioned generation device produced, and is the driving pulse that the pulse-length modulation at center drives above-mentioned semiconductor laser in order to the pixel centre of per 1 pixel;
The 2nd selecting arrangement is used for above-mentioned the 2nd pulse width modulation device and above-mentioned the 1st pulse width modulation device are selected;
Laser drive is used to drive above-mentioned semiconductor laser by selected the 1st pulse width modulation device of above-mentioned the 2nd selecting arrangement or the pulse width after the modulation of the 2nd pulse width modulation device;
The 2nd shared indicating device is used to indicate above-mentioned the 1st selecting arrangement and the 2nd selecting arrangement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96118519 CN1155104A (en) | 1995-11-30 | 1996-11-28 | Image forming device |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP313304/95 | 1995-11-30 | ||
| CN 96118519 CN1155104A (en) | 1995-11-30 | 1996-11-28 | Image forming device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1155104A true CN1155104A (en) | 1997-07-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 96118519 Pending CN1155104A (en) | 1995-11-30 | 1996-11-28 | Image forming device |
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| Country | Link |
|---|---|
| CN (1) | CN1155104A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100377018C (en) * | 2004-06-29 | 2008-03-26 | 北京北大方正电子有限公司 | Method for regulating micro print ink dot position and size |
| CN100435034C (en) * | 2004-03-26 | 2008-11-19 | 佳能株式会社 | Image forming apparatus and method |
| CN102957831A (en) * | 2011-08-26 | 2013-03-06 | 夏普株式会社 | Image forming apparatus |
| CN108572526A (en) * | 2017-03-08 | 2018-09-25 | 株式会社东芝 | Light-emitting substrate, print head and image forming apparatus |
-
1996
- 1996-11-28 CN CN 96118519 patent/CN1155104A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100435034C (en) * | 2004-03-26 | 2008-11-19 | 佳能株式会社 | Image forming apparatus and method |
| CN100377018C (en) * | 2004-06-29 | 2008-03-26 | 北京北大方正电子有限公司 | Method for regulating micro print ink dot position and size |
| CN102957831A (en) * | 2011-08-26 | 2013-03-06 | 夏普株式会社 | Image forming apparatus |
| CN108572526A (en) * | 2017-03-08 | 2018-09-25 | 株式会社东芝 | Light-emitting substrate, print head and image forming apparatus |
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