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51. 发明专利

JPH03231281A DEVICE FOR CLEANING AND COLLECTING TONER FOR IMAGE FORMING DEVICE 失效
公开(公告)号：JPH03231281A
公开(公告)日：1991-10-15
申请号：JP2524390
申请日：1990-02-06
申请人： RICOH KK
发明人： KAWAISHI YASUNORI , IKESUE MASUMI , ISHIKAWA TOYOJI , MIURA MIKIO , SATO MITSURU
IPC分类号： G03G21/10 , G03G21/00
摘要： PURPOSE:To easily collect discharged toner by making an aperture hole a long aperture hole in a moving locus direction so that the movement of a tube for transferring collected toner is allowed in accordance with the displacement of a cleaning device. CONSTITUTION:A projecting frame part 32A is integrally formed to the upper part of the main body of a discharged toner collecting device 32. Then, the side thereof faced to the cleaning device 6 is a part provided with the aperture hole 32A1 and the opposite side is a closed part. The stretching end part side of the tube for transferring collected toner 14 is inserted in the frame part 32A from such an aperture hole 32A1. The cleaning device 6 is fluctuated and displaced and the tube 14 is also moved in a direction shown by an arrow. Then, when the aperture hole 32A1 is made to be the long aperture hole in the moving locus direction so as to allow the tube 14 to be moved, excess load other than the own weight of the cleaning device 6 is not added to the device 6 itself. Thus, the discharged toner is collected without trouble.

52. 发明专利

JPH03200160A BELT MAGAZINE 失效
公开(公告)号：JPH03200160A
公开(公告)日：1991-09-02
申请号：JP33815589
申请日：1989-12-28
申请人： RICOH KK
发明人： ISHIKAWA TOYOJI , IKESUE MASUMI , KAWAISHI YASUNORI , MIURA MIKIO , SATO MITSURU
IPC分类号： G03G15/02 , G03G15/00 , G03G21/00 , G03G21/16
摘要： PURPOSE:To protect a belt photosensitive body and to facilitate the treating of jammed paper and the cleaning of a charge wire by providing a charger part core piece openably and closably with the belt part case piece. CONSTITUTION:The belt magazine A is so formed as to be attached and detached in an arrow b direction. A case 11 is constituted of the belt part case piece 11A to cover the belt photosensitive body 15 and the charger case piece 11b to cover a transfer charger 16. The two case pieces 11A, 11B are supported in a supporting part 11i in the longitudinal direction of the case 11. The charger case piece 11B is provided openably and closably with the belt part case piece 11A. The case is so formed as to be divided to the two case pieces 11A, 11B with paper pass ports 11e, 11f as a boundary. The belt photosensitive body is protected in this way and the treating of the jam paper and the cleaning of the transfer charge wire are simplified.

53. 发明专利

JPH03177221A METHOD OF CONTROLLING PREVENTION OF SIDE SLIP 失效
公开(公告)号：JPH03177221A
公开(公告)日：1991-08-01
申请号：JP31694889
申请日：1989-12-06
申请人： RICOH KK
发明人： MIURA MIKIO , IKESUE MASUMI , ISHIKAWA TOYOJI , KAWAISHI YASUNORI , SATO MITSURU
IPC分类号： G03G21/00 , B65G43/02 , G03G15/00
摘要： PURPOSE:To enhance the ability of control of prevention of side slip of an endless image-transfer belt or the like by providing a position detecting pattern in which triangles having their apexes directed toward the axial direction of a drive roller are successively arranged, on one side end part of the belt in the direction of belt conveyance, and by controlling the degree of side slip of the belt in accordance with a signal obtained from the pattern. CONSTITUTION:Marks having a reflectance which is different from that of the outer surface of a belt 1, such as black isosceles triangles or the like, are successively arranged on one side end part of the outer surface of the belt 1 over the entire circumference of the belt in the direction of conveyance of the belt 1 so as to obtain a position detecting pattern 4 which is detected by a reflection type photosensor 3. For example, estimating that a position (a) is a reference position, a position (b) or (c) is detected in accordance with a side slip of the belt 1. A degree of the side slip is computed in accordance with a detection signal from the photosensor 3 so as to control a belt shift means in a direction in which the side slip can be eliminated. With this arrange ment, it is possible to reduce the range of belt meander.

54. 发明专利

JPH03174571A TONER RECOVERY DEVICE 失效
公开(公告)号：JPH03174571A
公开(公告)日：1991-07-29
申请号：JP31335789
申请日：1989-12-04
申请人： RICOH KK
发明人： IKESUE MASUMI , ISHIKAWA TOYOJI , KAWAISHI YASUNORI , MIURA MIKIO , SATO MITSURU
IPC分类号： G03G21/10 , G03G21/00
摘要： PURPOSE:To efficiently recover scattered toner and to reduce the frequency of toner cleaning by forming a transfer paper conveying part on the upper surface of a toner recovery container. CONSTITUTION:The toner recovery device 10 is mounted to the bottom surface of an image producing system kit 1. Out of the upper surface of the container 10a of the device 10, a part which is an upstream side from a transfer charger unit 6 is used also as a pre-transfer guiding plate part 13 and a part which is a downstream side from the unit 6 is used also as a conveyance guiding plate part 14. Thus, a transfer paper conveying path where the scattered toner drops is exchanged with the exchange of the device 10. Even though the transfer paper conveying path is not cleaned frequently, the failure that the scattered toner is stuck to the transfer paper to contaminate an image is kept to the minimum.

55. 发明专利

JPH01137381A SWITCH MATRIX CONTROL CIRCUIT 失效
公开(公告)号：JPH01137381A
公开(公告)日：1989-05-30
申请号：JP29517287
申请日：1987-11-25
申请人： RICOH KK
发明人： MIURA MIKIO
IPC分类号： G06F17/40
摘要： PURPOSE:To minimize time required to fetch input data by using a DMA controller to transfer the input data received from a switch matrix. CONSTITUTION:A switch matrix control circuit consists of a DMA controller 12 that transfers the input data received from a switch matrix 11 to a RAM 14, the bus drivers 15 and 16 which switch the accesses to be given to the RAM 14 between the controller 12 and a CPU 13, and a logic. The CPU 13 transfers continuously the input data received from the matrix 11 except the time when an access is given to the RAM 14. Furthermore, the CPU 13 can give a random access to a buffer memory in the RAM 14 and the contents of the CPU 13 are always replaced. Therefore, the CPU 13 can fetch the input data with no consciousness of a fact that the matrix 11 is equal to an input device requiring an interface.

56. 发明专利

JP2003087575A IMAGE DISPLAY APPARATUS 审中-公开
公开(公告)号：JP2003087575A
公开(公告)日：2003-03-20
申请号：JP2001280647
申请日：2001-09-14
申请人： RICOH KK
发明人： MIURA MIKIO
IPC分类号： H04N1/419 , G06T9/00 , G09G5/00
摘要： PROBLEM TO BE SOLVED: To provide an image display apparatus having an image data conversion system capable of immediately encoding by providing an encoding/decoding means capable of encoding/decoding more quickly than in the conventional method in order to effectively utilize a video memory. SOLUTION: Final encoded data CODE1 to CODE8 are obtained by inputting respective outputs of a line buffer 2209, a BM judgment circuit 2203, a run length judgment circuit 2202, a blank row decision circuit 2205, a blank run length judgment preprocessing part 2206 and the number of blanks decision circuit 2208, and also, set data of a code register 2210 to a code decision circuit 2204 of the diagram 3. When image data LD1 to LD8 of the line buffer 2209 are determined in this way, combination circuit can decide the whole input signals up to an input signal of the code decision circuit 2204, and the final encoded data CODE1 to CODE8 can be obtained in one clock.

57. 发明专利

JP2002221953A IMAGE DISPLAY DEVICE 失效
公开(公告)号：JP2002221953A
公开(公告)日：2002-08-09
申请号：JP2001018989
申请日：2001-01-26
申请人： RICOH KK
发明人： MIURA MIKIO
IPC分类号： H04N19/13 , G09G5/00 , H04N1/419 , H04N7/24 , H04N19/00 , H04N19/134 , H04N19/196 , H04N19/423 , H04N19/426 , H04N19/46 , H04N19/48 , H04N19/70 , H04N19/93
摘要： PROBLEM TO BE SOLVED: To provide an image display device capable of utilizing effectively a video memory and capable of coding/decoding quickly image data by being provided with a run length deciding device capable of coding instantly the image data. SOLUTION: Outputs of a pattern comparator are connected to the run length decision preprocessing part 311 of a run length deciding device 301 and ANDs (logical products) of adjacent outputs of the pattern comparator are calculated. Then, AND outputs of respective stages and comparator's outputs are inputted to the run length deciding circuit 312 of the run length deciding device 301 and a decision whether how many times an output in which the same patterns coincide is continued is performed in the circuit 312, and the run length of the same patterns is decided when the continuation (run) of the same patterns is true and adjacent runs are false. Moreover, image data in which all kinds of outputs of the pattern comparator are false and do not belong to a code which is expressed by the run length are stored in a video memory 303 as Bit-Map data.

58. 发明专利

JP2001215938A IMAGE DISPLAY DEVICE AND EQUIPMENT PROVIDED WITH THE SAME 失效
公开(公告)号：JP2001215938A
公开(公告)日：2001-08-10
申请号：JP2000078814
申请日：2000-03-21
申请人： RICOH KK
发明人： MIURA MIKIO
IPC分类号： G09G3/36 , G09G3/20 , G09G5/00 , H04N5/66 , H04N9/12
摘要： PROBLEM TO BE SOLVED: To attain the high quality of an image in pseudo assigning intensity levels by suppressing the flicker and the moving phenomenon without causing the degradation of image quality with simple constitution. SOLUTION: Pseudo assigning intensity levels are made possible by lightingly controlling an image frame consisting of pixels which are arranged in a matrix shape and which are lightingly controlled by two values in a block unit with divided 4×4 pixels. At this time, when the gradation of the pixels of the block is the same as that of an adjacent block, pixels are controlled so that assigning intensity levels become uniform in time and in space by changing a pattern for every block while rotatingly processing fundamental patterns preliminarily stored in a register 107 in accordance with gradation data from a VRAM 103 so that pixel lighting patterns do not become the same according to addresses of a dot counter 104 and a line counter 105 and, moreover, by performing the rotation of patterns among blocks of 4×4 block-unit for every frame.

59. 发明专利

JPH09179541A IMAGE DISPLAY DEVICE 失效
公开(公告)号：JPH09179541A
公开(公告)日：1997-07-11
申请号：JP34134095
申请日：1995-12-27
申请人： RICOH KK
发明人： MIURA MIKIO
IPC分类号： G09G5/02
摘要： PROBLEM TO BE SOLVED: To rewrite plural color planes en bloc by providing plural writing means simultaneously writing data of two colors or binary with respective to plural image memories based on write modes set in a common register. SOLUTION: A CPU 1 is connected the multiplexer 7 via address busses and also to a write mode register 5 and write mode controllers 6 of an LCD controller 2 via data busses. Then, in the common with mode register 5, write modes of the inverses of RGB, all '0' bits and all '1' bits are set with respect to a frame memory 3R (3G, 3B). The write mode controller 6R (6G, 6B) rewrites en bloc the frame memory 3R (3G, 3B) based on respective write modes of the inverses of RGB, all '0' bits, all '1' bits.

60. 发明专利

JPH08156491A ELECTRONIC CHALKBOARD 失效
公开(公告)号：JPH08156491A
公开(公告)日：1996-06-18
申请号：JP29982294
申请日：1994-12-02
申请人： RICOH KK
发明人： KAWASE JUNICHI , KOIKE TADAO , MIURA MIKIO , HIRONO TATSUO
IPC分类号： B43L1/04 , B43L21/00 , H04N1/00
摘要： PURPOSE: To provide an electronic chalkboard in which the written contents are surely erased and overwrite is prevented. CONSTITUTION: A white board sheet 1 being a writing/indication screen is turned clockwise (direction shown in the arrow) in the figure. A writing means 12 is provided near to the white board sheet 1 in the inside of a device. An indication erasing means 15 is provided in the vicinity of the upstream side in the turning direction of the white board sheet 1 for the writing means 12. Thereby, the writing contents are erased just before writing due to the writing means 12 is performed and generation of overwrite is surely prevented.

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