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11. 发明专利

JP2002314738A IMAGING DEVICE 失效
公开(公告)号：JP2002314738A
公开(公告)日：2002-10-25
申请号：JP2001109632
申请日：2001-04-09
申请人： SHARP KK
发明人： MATSUMOTO TOSHIMASA , SUZUKI MICHIYUKI , KINOSHITA HIROKI
IPC分类号： B41J29/38 , G06F3/12 , H04N1/00
摘要： PROBLEM TO BE SOLVED: To prevent malfunctions caused by an unwanted signal level which is left on a bidirectional interface, when a transmission reception signal switching signal is switched. SOLUTION: The imaging device uses a transmission control signal TRDY, denoting the start of transmission of information between a scanner 1 and a printer 2 connected via a bidirectional interface 3, a reception control signal RRDY denoting start of a reception of information between both, and a transmission reception switching signal DIR for controlling the switching of the transmission and reception to transmit/receive the information, and the scanner 1 is made not to detect the transmission control signal TRDY from the printer 2 for a prescribed period, when the transmission reception switching signal DIR is switched to the transmission from the printer 2 to the scanner 1, while the scanner 1 transmits image data to the printer 2.

12. 发明专利

JP2001326818A IMAGE PROCESSING UNIT 失效
公开(公告)号：JP2001326818A
公开(公告)日：2001-11-22
申请号：JP2000143939
申请日：2000-05-16
申请人： SHARP KK
发明人： MIZUYAMA YOSHIO , SUZUKI MICHIYUKI , KAWAKAMI TAKAHIRO , KAMEI NAOYUKI , ETO HIROKI , YOSHIMURA SOICHI
IPC分类号： G06T5/00 , H04N1/405 , H04N1/52 , H04N1/60
摘要： PROBLEM TO BE SOLVED: To provide an image processing unit that improves missing of an image by quickening a response to an error and realizes a small scale circuit by furthermore simplifying correction processing required for the improvement of missing image. SOLUTION: The image processing unit is provided with a low error discriminator 16 that discriminates whether or not an error caused by applying quantization processing to corrected density resulting from adding an accumulated error of density data of a target pixel (error before correction) is low and with a correction data generating section 15 that generates correction data depending on the density of the target pixel. Only in the case that no dot forming is decided and it is discriminated that the error before correction is low through the quantization processing by a threshold processing circuit 12, a selector 17 replaces the error before correction with correction data and provides an output of the replaced data to a weighting circuit 14. In other conditions than above, the error before correction is outputted to the weighting circuit 14 without any modification.

13. 发明专利

JP2002229760A IMAGING DEVICE, INFORMATION APPARATUS, AND STORAGE MEDIUM 失效
公开(公告)号：JP2002229760A
公开(公告)日：2002-08-16
申请号：JP2001026156
申请日：2001-02-01
申请人： SHARP KK
发明人： HAYASHI YOSHIYORI , SUZUKI MICHIYUKI , MIZUYAMA YOSHIO , KINOSHITA HIROKI
IPC分类号： B41J29/38 , G06F3/12
摘要： PROBLEM TO BE SOLVED: To provide an imaging device capable of suppressing an effect to a user even when a trouble occurs on the imaging device receiving a print request. SOLUTION: The imaging device, which is connected to a network, has a radio interface, accepts the print request sent from an information apparatus via the network or the radio interface (S21), and prints the data sent together with the print request (S23), is provided with a determining means S22 determining whether the printing in response to the print request is feasible or not, a reporting means S28 transferring the determination result of the determining means, the print request, and data when the determining means determines the printing as infeasible (S22) and reporting the print request and a transferee of data to the information apparatus, and a transferring means S30 transferring the print request and data to another image forming device, which is the transferee, through the radio interface.

14. 发明专利

JP2002031987A DISPLAY DEVICE FOR IMAGE FORMING DEVICE 失效
公开(公告)号：JP2002031987A
公开(公告)日：2002-01-31
申请号：JP2000217804
申请日：2000-07-18
申请人： SHARP KK
发明人： TANI KENJI , MORIOKA HIROHITO , KAWAKAMI MASAAKI , SUGITO KOJI , KONDO GIICHI , ARAI MARIKO , IDE TAKASHI , WATANABE KIMIKO , MASUDA KAZUYA , NAKAHIRA YOSHINORI , KAWAKAMI TAKAHIRO , TSUJII TOSHINORI , ETO HIROKI , YOSHIMURA SOICHI , ETO KOICHI , SUZUKI MICHIYUKI , TSUKAMOTO KOJI
IPC分类号： B41J29/42 , G03G21/00 , H04N1/00
摘要： PROBLEM TO BE SOLVED: To provide a display device for an image forming device constituted so that information which a user wants to know can be displayed to be visually easily viewed. SOLUTION: This composite image forming device is equipped with any means among an original reading means 100 reading image information from an original, an image receiving means 110 receiving the image information from a terminal connected to a network, and a line image receiving means 120 receiving the image information from a telephone line; an image forming means 28 forming an image based on the image information obtained from the respective means; and a display part 8 displaying the state of the device. The image forming device is equipped with a display control part 101 changing the display state of the display part 8 to a visually easily discriminated state when the state of the image forming device is changed.

15. 发明专利

JPH08334936A ORIGINAL CARRYING DEVICE 失效
公开(公告)号：JPH08334936A
公开(公告)日：1996-12-17
申请号：JP13784495
申请日：1995-06-05
申请人： SHARP KK
发明人： SATOU YUKIYA , SUZUKI MICHIYUKI , OKUDA MASAKIYO
IPC分类号： G03B27/62 , B65H5/06 , G03G15/00
摘要： PURPOSE: To obtain an original carrying device excellent in operability and capable of preventing the floating of original to be generated between an original platen and original, with a simple constitution and further, a small scale at a low cost. CONSTITUTION: The original carrying device is provided with semicircular rollers 45 on both ends of the front side of an original cover 3 and shafts 50 on both ends of the side opposite to the front side. The top ends of the semicircular rollers 45 are made to be in the horizontal and vertical slates to raise and lower the front side of the original cover 3. The shafts 50 are inclindedly attached to rise diagonally upward to the front side, in such a manner that the ends on one side of the shafts 50 are fixed on the cover 3 and the ends on the other side are fixed on a copying machine main body 1. The shaft 50 are driven to extend and contract by a driving gear 51, to raise and lower the rear side of the cover 3. Thus, the cover 3 can be parallelly raised and lowered by the operations of the semicircular rollers 45 and the shafts 50.

16. 发明专利

JPH08231122A IMAGE FORMING DEVICE PROVIDED WITH DOCUMENT CONVEYING DEVICE 失效
公开(公告)号：JPH08231122A
公开(公告)日：1996-09-10
申请号：JP4164795
申请日：1995-03-01
申请人： SHARP KK
发明人： OKUDA MASAKIYO , KAJIWARA JUNICHI , SATOU YUKIYA , SUZUKI MICHIYUKI , KATO SHINJI , MORITA KIWAMU
IPC分类号： G03G15/00 , B65H43/00
摘要： PURPOSE: To provide a simple document conveying device having the simple structure, the small size and the low cost, and in which damage by the conveyance of the documents is decreased, in the document conveying device suitable for the attachment to an image forming device such as a copying machine. CONSTITUTION: A conveying roller 34 for conveying documents between a document table 2 and an operating panel 22 is arranged on the upper part of a copying device main body, the specified clearance (d) is formed between the document table 2 and a document cover 3, the conveying roller 34 is rotated when a document detecting lever 33 arranged in front of the conveying roller 34 is operated, and the document D is conveyed to the document table 2. In this conveyance, if a slit detecting signal from a sensor 39 for detecting the slit of a rotary encoder 38 to be rotated in synchronism with the conveyance of the document is not a value (Ca) wherein the count numbers in the specified period (ta) is predetermined, it is judged that the conveyance is abnormal, and the rotation of the conveying roller 34 is stopped.

17. 发明专利

JP2001309172A ERROR SPREAD PROCESSING METHOD AND ERROR SPREAD PROCESSING UNIT 失效
公开(公告)号：JP2001309172A
公开(公告)日：2001-11-02
申请号：JP2000115601
申请日：2000-04-17
申请人： SHARP KK
发明人： SUZUKI MICHIYUKI , MIZUYAMA YOSHIO , KAWAKAMI TAKAHIRO
IPC分类号： G06T5/00 , H04N1/405
摘要： PROBLEM TO BE SOLVED: To provide an error spread processing method that can enhance the accuracy of image processing without incurring cost-increase in an arithmetic processing circuit even when a large scattering range is selected. SOLUTION: In the error spread processing method of this invention where comparing a value of a target pixel with a threshold value converts a density value and the error of the target pixel caused by the density conversion is scattered to surrounding pixels represented by a prescribed matrix, number of lines of the matrix in a subscanning direction is 3 or more, while the target pixel value being the spread error of the 2nd and succeeding rows is compared with the threshold value, the spread error for a plurality of lines is stored in one line memory 4 altogether, and when the spread error stored in the line memory 4 is read, the error is distributed to the original line number and part is given to the target pixel line (line of data registers 2A, 2B).

18. 发明专利

JP2001045302A IMAGE PROCESSOR AND PICTURE FORMING DEVICE USING THE SAME AND RECORDING MEDIUM PROCESSING ITS PROGRAM 失效
公开(公告)号：JP2001045302A
公开(公告)日：2001-02-16
申请号：JP21114499
申请日：1999-07-26
申请人： SHARP KK
发明人： MIZUYAMA YOSHIO , SUZUKI MICHIYUKI
IPC分类号： B41J2/525 , B41J2/52 , G06T5/00 , H04N1/40 , H04N1/405 , H04N1/46 , H04N1/52
摘要： PROBLEM TO BE SOLVED: To provide an image processor for suppressing sense of block dot particles and deterioration of saturation without damaging dot balance of each channel regardless of pseudo halftone processing for each channel. SOLUTION: Whether or not correction values C1, M1, and Y1 corrected by an error spreading method for each channel are larger than a threshold is judged by each threshold processing part 31c, 31m, and 31y in a pseudo halftone processing part of a picture forming device. When it is detected that concentration is higher than the threshold value in all the three channels by a CMY superimposition detecting part 32, a minimum concentration channel judging part 33 instructs a first quantization value displacing part 34 to change outputs C2a, M2a, and Y2a of each threshold value processing part 31c, 31m, and 31y so that the output value of the channel whose concentration is the minimum can be set as the value which does not form any dot. Thus, a superimposition of the three channels can be prevented.

19. 发明专利

JP2001007969A IMAGE FORMING DEVICE 失效
公开(公告)号：JP2001007969A
公开(公告)日：2001-01-12
申请号：JP17286799
申请日：1999-06-18
申请人： SHARP KK
发明人： ITOYAMA MOTOYUKI , SUZUKI MICHIYUKI , MIZUYAMA YOSHIO
IPC分类号： B41J2/01 , B41J2/05 , B41J2/165 , B41J29/393 , H04N1/00
摘要： PROBLEM TO BE SOLVED: To provide an image forming device which detects defects of a nozzle and an optical system to prompt execution of maintenance with a message. SOLUTION: The image forming device provided with a scanner 1 for image read and a print head part 14 for printing is provided with a test pattern image data storage ROM 7, where a test pattern is stored, and a picture processing part 12 which reads the printed test pattern by the scanner 1 and performs discrimination processing of this image data to diagnose defects of the print head part 14 and the scanner 1.

20. 发明专利

JP2000272116A INK JET PRINTER WITH IMAGE-READING DEVICE AND METHOD FOR PROCESSING ITS PRINT NOZZLE 失效
公开(公告)号：JP2000272116A
公开(公告)日：2000-10-03
申请号：JP8221599
申请日：1999-03-25
申请人： SHARP KK
发明人： ITOYAMA MOTOYUKI , SUZUKI MICHIYUKI , MIZUYAMA YOSHIO
IPC分类号： B41J2/01 , B41J2/165 , B41J29/46
摘要： PROBLEM TO BE SOLVED: To provide an apparatus and a method whereby printing in a normal nozzle state without clogging is made possible and, stable and high image-quality print samples can be obtained at all times by correctly detecting a failure generation point and displaying a warning to a user when a print nozzle clogs, and automatically performing maintenance to the nozzle clogging in some cases. SOLUTION: A test pattern is printed to check whether or not an ink nozzle of the ink jet printer correctly functions. Image data of the printed sample is read by an image-reading device 1. An image data image-processing part 13 detects a failure of the ink nozzle from the read result. When it is judged that there is a failing nozzle, a message is displayed to a user or a cleaning operation is automatically conducted. In the case where the test printing is not turned good even after the cleaning operation, a message for replacing ink heads is output.

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