JPS58190160A - Printer - Google Patents

Abstract

PURPOSE:To record a picture corresponding to an original picture without requiring a memory with large capacity, by reading the original picture in response to the recording of a multi-recording head. CONSTITUTION:An original picture 16 on an original board 17 is irradiated by a planar light beam or a scanned spot light beam. The reflected light given from the picture 16 is separated into three primary colors via a mirror 18 and dichroic mirrors 19-1 and 19-2. These primary colors are made incident to line sensors 20-1, 20-2 and 20-3 respectively. Each line sensor can read the primary color picture signal in response to the multi-recording head of the recording side and with the desired image resolution. Such a primary color picture signal is converted into a desired recording picture signal by a processor 21 and then outputted in the form of a recording head control signal via buffer registers 23-1- 23-4 having the desired time lag.

Description

DETAILED DESCRIPTION OF THE INVENTION This invention relates to a printer in which a plurality of multi-recording heads are arranged in parallel and these recording heads are run in a direction perpendicular to the recording element array to perform main scanning of dot matrix recording. In order to read the Ryo IIII LI* in response to the recording, it is possible to read the Ryo IIII LI* with a simple configuration without requiring a large capacity memory device! It is designed so that two recordings can be made of the Il image.

2 in dot matrix by this kind of multi-wiring head
-Inkjet printers include;/
Various recording devices such as wire dot printers and thermal head printers are known, and the representative printer among them is the Ikuji Soto printer.
It is roughly constructed as shown in FIG. That is,
In the figure, multi-nozzle heads 7 to 11 are arranged on a carriage L in order from the left, cyan (Q, magenta (roll), yellow ■) and black (roll). Ink of each color was ejected, and ink of each color was supplied to each multi-nozzle head from the ink tank via the 03 injection pipe 3, and a large number of conductive wires were arranged and buried respectively. . J Supplementary Note e Enpel)! -/~j-41, a drive signal is supplied to each via the relay terminal plate 6 and the intertwining feed belt 7. A carriage with a bending configuration/& An endless belt connected with a single guide rail placed on top is driven by a pulse motor 10K to make the carriage L reciprocate in the X direction in the figure, and K performs main scanning. , the recording paper /λ spread through the roller pair /IK
The connected pulse motor /j feeds in the Y direction in the figure to perform rigid scanning, and a force of 2-m* is applied by each color ink jetted from the nozzle /-2-(I) onto the recording paper /2 to each multi-nozzle. Note that stoppers are placed at both ends of the reciprocating path of the carriage l to determine the range of main scanning.

Color II! by an inkjet printer configured as described above! The mode of IIg1 recording is illustrated in FIG. 2. In other words, the recording paper l is moved in the direction of the arrow in the figure.
When recording a color image CP by performing sequential head scans l--N as main scans in the left and right directions while intermittently performing paper feed of In the head scan carried out in the direction, the head scans start from the positions R4l-~R/ from the recording start point and move from the left to the multi-nozzles arranged in the J-shape from the left in the figure. The order of the *C edges of the 5 n-)-ts is 1111 on the recording paper/2: black (埒), yellow (■, magenta (to), cyan (C)), followed by the left side in the figure. In head scanning carried out in the direction 8d, electric machine a of the same dot is started from a position at a distance R/~R4' from the green starting point and is performed by a multi-nozzle line =/~ coder arranged in order from the left in the figure. The green j1 order is cyan (C), magenta country, yellow ('l'l, and black ('l'l) on the recording paper/co.
(Hitoshi) I, and the order of overlapping recording in the forward and reconnaissance passes of the main scan is reversed.

In the above-mentioned manner, head scanning and paper feeding are repeatedly performed to the father K. During the 11II recording, the recording data to be supplied to the multi-recording head is formed in advance in the form of a VjAJ image signal by appropriate signal processing. 3. The information is stored in a memory device based on a configuration that is extremely small. - If the number of pixels for 1/frame is j/co Yuki in both the vertical and horizontal directions, then when using a conventional @-taking device that scans AM in the horizontal direction, such as a television camera, the pixel address of the image data stored in the memory are added sequentially to the right, starting with 0 at the upper left end in the figure, up to the final value of 4J/l. If the recording element row length of the multi-recording head is capable of outputting data for 31 pixels at a time, one side of the diagram is vertically divided into 74, and head scan/~head scan/4 is performed in the vertical direction from the upper right in the diagram. It scans back and forth up to the point, and sequentially reads three images of cumulative image data from the memory and sends it to the recording head to print. Therefore, printing with this conventional woodcutter printer requires a memory device with an extremely large capacity.

Moreover, in order to form @image data of the above-mentioned apparatus, conventionally, for example, an imaging device such as a television camera that performs surface scanning using normal lateral rotation f# is used to capture the original 1 dI.
The I image is scattered as the three primary colors - image signals, and the three primary colors 1[1
Three primary colors IILli by additive color mixing for 11m signal
& signal by subtractive color mixing) Color 11! Complementary color conversion for converting into a three-complementary color-image signal for recording Ll-I, masking for adapting to the ink dot recording characteristics, and dither processing for adapting the resolution of the imaging device to the corner image degree of the recording law. etc. 4! After that, the -H is stored in the large-capacity memory device #t as mentioned above, and further, it is read out to ll11pI-, which is different from when it was loaded, and the drawing recording in the above-mentioned manner is stored in the bamboo. Therefore, conventional printers have the disadvantage that they require a large memory device and the circuit configuration for data formation and control is disastrous. .

The purpose of the present invention is to eliminate the above-mentioned conventional drawbacks and to
F9T recording image data is formed by relatively simple signal processing using an innovative circuit configuration, with almost no need for J & storage, and no need for a conventional Otani 1 memory device. 1- Providing a printer that can be used

(In other words, the printer of the present invention reads the original image in exactly the same procedure as the image is recorded,
This simplifies the signal processing process that intervenes between image scanning and recording, and enables direct connection between image reading means and image arranging means.

The present invention will be explained in detail below with reference to the drawings.

The ridge configuration of the document image 11 reading device in the printer of the present invention is schematically shown in FIG. In the configuration of the drawing board, the original document 74 is placed on the document table/7, and the original document image is
The entire surface is irradiated uniformly by a plane light source (not shown) or by IfI scanning by a spot light source (not shown) K in accordance with the surface scanning by a photoelectric conversion probe described later. In 4 of such lighting, the warehouse thme/4! To record the image, use the same M
The entire surface is scanned in exactly synchronized manner. That is, while the document table 7 is sequentially and intermittently moved in the same direction in the same direction as the paper feed in FIG. /l is oscillated and rotated in the scanning direction shown in the figure, the original image 16 is scanned with the same width in synchronization with the recording, and the reflected light from the original -gI/A is passed through the mirror /l to a semi-transparent image. So-called dichroic mirror/? -/ and /9- A line sensor l-/ for each primary color light which separates the light into each of the three primary colors, that is, red (river, edge) and evening (B).

The light is made incident on J-co and l-J, respectively. Correspondingly, conventional photoelectric conversion elements of volume, such as photodiodes, phototransistors, charge-coupled units (CCU)
By arranging the minute photoelectric transducers of the temple, we can read the duck's rock with the required resolution.
It shall be configured as follows.

Each primary color -g1 signal (R) from each line sensor i)-/~l-3 which read the document till*/4 as described above.

+l, (Bl is, for example, the signal processing unit 4 with the configuration shown in Figure S). Convert to each color scheme.In the configuration shown in the diagram,
The respective primary colors @mmMIR1, (G), (B) from @mmMIR1, (G), (B) are supplied in parallel to the processing device λ/ for signal processing of F9'I, that is, the complementary colors described above! The image signals are converted into recording image signals 1c:), H, fY), and (6) by performing signal processing such as color processing, masking, and signal processing during recording of a mixture of three complementary colors. Therefore, in order to supply each of these recording materials to the multi-recording head and record each one of them, as shown in Figure 1, the distance from the recording start point of the multi-recording head to each recording element array must be It is necessary to add a time difference corresponding to the distance R/-Rf to each color image signal for recording, and in order to provide this time difference, K, the delay time amount B+xH~R/ corresponding to the above-mentioned distance R/~RII, respectively. Buffer registers Q? each having XN bits? −/ −Q7−→
Each color for recording through the decoding code (C), (M
) , (Y) , (In order to supply IQ to each array element row Km, and to make the amount of delay time to be applied correspond to the reversal of the forward and backward paths of head scanning and K shown in Fig. 1. For example, if the changeover switch n and the switch inserted on the input and output sides of the 1-valley buffer register are set to the contacts on the upper side of the figure in the forward path of head recording, then in the return path of head recording II8, the contacts on the lower side of the figure are set. Switch to contact and reverse it.

In the above embodiments, a printer that records +1111'IiI on both the forward and return paths of the recording head has been described, but according to the present invention, recording is performed only when the head travels one way, that is, the image shown in FIG. After recording in head scan l, at the same time as the general feed scan or #f
The head is moved back to the left end by shifting the darkness, and then, during head scanning, the head is moved from left to right in the opposite direction to the arrow in the figure to perform printing. In this case, in the reading device shown in Figure 1, the mirror /l rotates in the scanning direction of the arrow so as to move from the left end of the lily yuzu, and in the scanning
After the second scan is completed, as the original ellipse is moved, the mirror /l is rotated and returned to a position where reading can be started from the left end of the original vat in the next scan. Processing path No. 91 (b) in the above-mentioned printer No. 2 does not require the cut-off switch and evaluation that accompany the reversal of the forward and backward travel of the head in FIG. The buffer registers 2J-/--Kohiro, which provide a time difference according to the distance R/--R, may have a fixed size for each color No. 18.

Furthermore, in the embodiment of the present invention, in order to perform the masking process and the black process, the reading device shown in the *+ figure uses waste yarn that separates three colors simultaneously; In a printer that reads a document or the like in three colors of red, island, and blue and performs printing according to the color signals, it is not necessary to send the signals of each color at the same time. Therefore, the recording elements a-/-3 are shifted in advance so as to be able to read the gland at a position shifted by a distance R/-R from the recording start position of the recording element array. In this case, the signal processing circuit becomes even simpler, and since the delay of R/-R41 has already been added at the stage of the aJ & tsuta original signal, the switch-1 evaluation and buffer register U
-/~J→ is unnecessary.

As is clear from the above description, according to the present invention, the original Il! Each color TM image signal formed by reading 117 can be almost directly supplied to the multi-recording head by simply adding a slight delay cover corresponding to the resist in the multi-recording head. No memory device is required at all, resulting in an inexpensive and simple configuration.

It should be noted that, if the configuration and layout of the 1WIJ reading set meal device corresponds to the configuration and layout of the recording head, the present invention can be similarly applied to a Hinoki cypress printer and achieve the same effect even when performing various types of scanning recording. I can do it.

[Brief explanation of drawings]

Section 7 is a perspective view showing the general structure of an inkjet printer, Figure 1 is a diagram showing the irregular pattern of scanning during recording, and Figure 3 is a diagram showing the arrangement of image signals for edging in a conventional printer. The first figure is a perspective view showing an example of the configuration and arrangement of the original image reading device in the printer of the present invention, and the third figure is an example of the configuration of the signal processing path for the reporter. FIG. l...carriage, knee/~kneader...multi-nozzle head, 3...LOE pouring pipe, q...ink tank,! -/-3
-Da...Ql insulating belt, 6...relay terminal board,
R...Comprehensive power supply belt, l...Guide rail,
? ...painless belt, 10, /j...pulse motor, //-/, //-ko...stopper, /ko...recording paper, /3, /see...roller pair, / G...Manuscript, 17...Document stand, /l...
Rotating mirror, /9-/, /? -λ...dichroic mirror,
21) -/~No 3... Line sensor, -/... Processing device, 11, L2-/~--Tei, -q, Review-7 ~ Review-shi...
・Switch switch, Q? −/〜−−Tei...Buffer register. %Applicant: Canon Co., Ltd.

Claims (1)

[Claims] In a printer that performs main scanning in dot matrix recording by arranging a plurality of recording element rows in parallel and running in a direction perpendicular to the recording element rows, the lI! 1. A printer comprising: a reading element array for reading II KIYU U from an original image, and configured so that the reading element array scans the glandular image in correspondence with the main scanning of the recording element array.