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21. 发明专利

JPH03199067A GRAPHIC OUTPUT APPARATUS 失效
公开(公告)号：JPH03199067A
公开(公告)日：1991-08-30
申请号：JP33830989
申请日：1989-12-28
申请人： CANON KK
发明人： ATOBE HIROSHI
IPC分类号： B41J2/485 , B41J5/44 , G09G5/22
摘要： PURPOSE: approx.

22. 发明专利

JPH0257021A ELECTRONIC APPLIANCE 失效
公开(公告)号：JPH0257021A
公开(公告)日：1990-02-26
申请号：JP20735788
申请日：1988-08-23
申请人： CANON KK
发明人： ATOBE HIROSHI
IPC分类号： B41J29/00 , H04B10/11 , H04B10/114 , H04B10/548 , H04B10/80
摘要： PURPOSE:To eliminate a bundled-line in an electronic appliance and to make the appliance small in size by abolishing electric wiring between units executing control between the units with optical communication. CONSTITUTION:An operation indicating instruction by a CPU51 is communicated by an optical communication unit 53 which is composed of a light emitting element (an LED, etc.), and a modulating device. The operation indicating instruction to be transmitted from the optical communication unit 53 is received by optical communication units 55 and 56, which are composed of a photo- detecting element (a photo-sensor, etc.), and a demodulating device, and the respective function units of a printer execute respective function according to receiving information. Thus, the bundled-line in a printer main body can be eliminated. Then, since IC operation is executed for a modulating circuit and demodulating circuit to be used for the optical communication unit, the equipment can be made small in size.

23. 发明专利

JPH08161135A OUTPUT DEVICE, OUTPUT METHOD, OUTPUT SYSTEM, AND INFORMATION PROCESSOR 失效
公开(公告)号：JPH08161135A
公开(公告)日：1996-06-21
申请号：JP33021494
申请日：1994-12-06
申请人： CANON KK
发明人： ATOBE HIROSHI
IPC分类号： B41J29/38 , B41J29/46 , G06F3/12 , G06F11/22
摘要： PURPOSE: To provide an output device capable of simulating the operation of a non-volatile memory regardless of the capacity of a RAM included in the output device when the non-volatile memory is failed. CONSTITUTION: A picture output system is provided with a host computer 100, a laser beam printer(LBP) 101, a CPU 102, a ROM 103, a RAM 104, bidirectional interface 105, an NVRAM 106 for storing printing environments, an NVRAM failure recognizing part 107, and an NVRAM substitution instructing part 109. When the NVRAM 106 is physically destructed, the recognizing part 107 checks whether or not a hard disk 110 connected to the LBP 101 and the RAM 104 have capacity sufficient to replace the function of the NVRAM 106 and when the substitution is possible, simulates the operation of the NVRAM 106 by the user of the hard disk 110 and the RAM 104. Only when the substitution is impossible, the CPU 102 generates a service call to notify a user of a substitution request for the NVRAM 6.

24. 发明专利

JPH07271247A IMAGE FORMING DEVICE 失效
公开(公告)号：JPH07271247A
公开(公告)日：1995-10-20
申请号：JP8368094
申请日：1994-03-31
申请人： CANON KK
发明人： ATOBE HIROSHI , HARADA TAKUTO
IPC分类号： G03G21/00 , G03G15/08
摘要： PURPOSE:To provide an image forming device capable of notifying a user without providing a means for notifying him of the absence of toner such as an LCD and LED. CONSTITUTION:The image forming device is provided with a toner saving mode for adjusting the supply of the toner, a residual toner detecting part. 3 detecting residual toner, a toner saving mode switching part 4 automatically changing over the toner saving mode to validity or invalidity in accordance with the residual toner detected by the residual toner detecting part 3 and a toner saving mode executing part 5 executing the toner saving mode when it is switched to the validity by the switching part 4.

25. 发明专利

JPH05183597A PICTURE RECORDING DEVICE 失效
公开(公告)号：JPH05183597A
公开(公告)日：1993-07-23
申请号：JP33783991
申请日：1991-11-27
申请人： CANON KK
发明人： ATOBE HIROSHI
IPC分类号： G06K15/00 , H04L29/06
摘要： PURPOSE:To send page description language code data other than specific code data receptible by an opposite facsimile equipment (FAX) by providing a conversion means converting code data other than the specific code data into the specific code data to the device. CONSTITUTION:A printer 2 sends a transmission code (PDL) received from a host computer 1 to a PostScript code conversion section 10 via a code buffer 7. The conversion section 10 discriminates whether or not the received PDL is the PostScript code. When the PDL is the PostScript code, the inputted PostScript code is directly outputted to a PostScript code FAX 4 for FAX transmission. When the received PDL is not the PostScript code, the PDL is converted into the PostScript code. Then the converted PostScript code is outputted to the FAX 4 for FAX transmission.

26. 发明专利

JPH04157878A PICTURE RECORDER 失效
公开(公告)号：JPH04157878A
公开(公告)日：1992-05-29
申请号：JP28195590
申请日：1990-10-22
申请人： CANON KK
发明人： ATOBE HIROSHI
IPC分类号： B41J2/52 , B41J2/44 , G06T9/00 , H04N1/21 , H04N1/387 , H04N1/40 , H04N1/41 , H04N1/413
摘要： PURPOSE:To attain excellent picture recording by providing a 1st storage means storing a binarized picture when a received recording data is discriminated as a binary picture by a discrimination means, a compression means compressing a multi-value picture data when the data is discriminated as the multi-value picture by the discrimination means and a 2nd storage means storing the compressed data to the recorder. CONSTITUTION:When a data is discriminated to be a binary picture such as a character and a line picture, the data is expanded into a pattern for a picture output and stored in a page memory 8. The data by one line is written in or read from a line memory 11. When the data is discriminated to be a multi-value picture data, the pattern for a picture output is sequentially expanded and the picture compression technology is used for coding. A data outputted from an expansion section 7 is written in a line memory 10 synchronously with a write clock generated from a write clock generating section. An OR processing section 13 reads both the data by one line stored in the line memories 10, 11, ORs them and sends the result sequentially to an engine section 2.

27. 发明专利

JPH0470362A COLOR IMAGE FORMING DEVICE 失效
公开(公告)号：JPH0470362A
公开(公告)日：1992-03-05
申请号：JP17445890
申请日：1990-07-03
申请人： CANON KK
发明人： ATOBE HIROSHI
IPC分类号： B41J29/46 , B41J2/44 , G03G15/01
摘要： PURPOSE:To reduce the cost using a large-capacity external memory device by providing a coding means for coding a plurality of color image signals, an external memory means for storing each coded image signal, a means for discriminating an occurrence of error of each image signal to be stored, and an error informing means. CONSTITUTION:The present device consists of a controller 1 for processing an image and a printer engine part 2 for forming a permanently visible image. An image signal coded by an image signal coding circuit 18 is issued from an image signal generator 3 and stored in a hard disk 5. Under the control of a R/W control part 8, data for one line to be scanned by a laser beam is concurrently read by a data format conversion part 6 and a data check part 7. At this time, the data is hamming-coded to have 7/4 of data capacity for actual one line. Whether an error has occurred in the data issued to the data check part 7 is discriminated. As a result, if an error occurs again in the second discrimination, the error is indicated by an error informing part 17.

28. 发明专利

JPH03201674A PICTURE PROCESSOR 失效
公开(公告)号：JPH03201674A
公开(公告)日：1991-09-03
申请号：JP33830689
申请日：1989-12-28
申请人： CANON KK
发明人： ATOBE HIROSHI
IPC分类号： B41J2/52 , G06T5/00 , H04N1/40 , H04N1/405
摘要： PURPOSE:To reduce an enormous dither pattern information amount for each screen angle by providing a means to generate plural dither pattern information corresponding to the plural screen angles from one dither pattern information. CONSTITUTION:An input means 1 is provided to input multilevel picture data 6, and a gradation processing means 5 is provided to execute the gradation processing of the multilevel picture data, which are inputted by this input means 5, based on a prescribed threshold value matrix. Then, a threshold value matrix converting means 101 is provided to convert the threshold value matrix to be used for the gradation processing means 5. Thus, since a dither pattern is not provided for each screen angle but the plural dither pattern information are generated from one dither pattern information corresponding to the plural screen angles, the conventional enormous amount of the dither pattern information are reduced.

29. 发明专利

JPH03159758A IMAGE FORMING DEVICE 失效
公开(公告)号：JPH03159758A
公开(公告)日：1991-07-09
申请号：JP29973289
申请日：1989-11-20
申请人： CANON KK
发明人： ATOBE HIROSHI , SETO KAORU
IPC分类号： B41J2/52 , B41J2/44 , G03G15/04 , H04N1/23 , H04N1/405
摘要： PURPOSE:To obtain an excellent middle tone image even at low density or high density by a method wherein a density gradation data is generated according to an inputted multi-value pixel data, and irradiation time and emission intensity of beam light are properly used to perform controlling based thereon. CONSTITUTION:A 4-bit data of OH-FH which is corrected by a RAM 6, is converted to a 9 bit gradation data according to a conversion table with a density generating part 100. A laser drive circuit and a laser 11 are turned ON/OFF for specified time following pulse width modulation information expressed by upper 7 bits, and light quantity in ON of the laser is controlled by density information based on a lower 2 bit data. A concentration generation part 100 fixes a laser light quantity to a constant specified light quantity in the case of a specified density level or over, and performs density expression by pulse width modulation. In the case of under a specified density level, a pulse width is fixed to a constant specified pulse width, and density expression at low density is performed by change-over of intensity of the laser light quantity.

30. 发明专利

JPH02202461A RECORDING DEVICE 失效
公开(公告)号：JPH02202461A
公开(公告)日：1990-08-10
申请号：JP2308389
申请日：1989-01-31
申请人： CANON KK
发明人： ATOBE HIROSHI
IPC分类号： B41J2/44 , B41J2/485 , G09G5/24
摘要： PURPOSE:To make possible the use of an outline font capable of character print sharpness in a controller which allows the use of only a dot font by providing a font cache which can be shared by controllers. CONSTITUTION:After all code data A of a single page is stored in page memory 11, a microcomputer 10 selects character information (outline font data) of characters corresponding to code data A from font ROM 12. Then the microcomputer 10 develops an outline font character pattern based on the afore-mentioned character information in pattern memory 13 as a dot pattern. characters developed once in the dot pattern are stored in the form of a dot pattern in a font cache 5. After code data B of a single page is stored in all page memory 15, the microcomputer 14 selects a dot pattern corresponding to the code data B from font ROM 16 in the same manner as mentioned above. In addition, the microcomputer 14 develops a character pattern selected from font ROM 16 in pattern memory 17 and the character pattern is stored in the font cache 5 in the same way as described above.

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