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1. 发明专利

JP2002174995A CONSUMPTION INFORMATION MANAGEMENT DEVICE, IMAGE FORMING DEVICE AND CONSUMPTION INFORMATION MANAGEMENT SYSTEM 审中-公开
公开(公告)号：JP2002174995A
公开(公告)日：2002-06-21
申请号：JP2001290167
申请日：2001-09-21
申请人： RICOH KK
发明人： KOBU MAKOTO , MATSUURA ATSUKA , KANOSHIMA YUICHIRO , ICHINOMIYA KOJI , IGARI SATOSHI , KIYOTA MAMORU , SHINKAI YASUYUKI
IPC分类号： B41J29/20 , B41J2/175 , B41J29/38 , G03G15/00 , G03G21/00 , G03G21/02 , H04N1/00 , H04N1/34
摘要： PROBLEM TO BE SOLVED: To provide a consumption information management device capable of determining the rate of expendables so that a user is charged only for the rate of supplies practically consumed for image formation. SOLUTION: An integration density acquiring means 503a in the consumption information management device 503 acquires integration density from an image signal sent from an image processing part 501 and an information conversion means 503b calculates toner consumption (consumption information) by multiplying the integration density by a prescribed coefficient and sends the calculated value to an accumulated information calculation means 503c. The means 503c temporarily stores the toner consumption information in a memory 503d and reads out the stored information from the memory 503d at prescribed timing. Consequently only the price of a developer consumed by the user can be determined or the residual of a developer remaining in an image forming device can be calculated on the basis of an unadjusted accumulated developer consumption information stored in the memory 503d.

2. 发明专利

JPH10136211A IMAGE PROCESSOR 失效
公开(公告)号：JPH10136211A
公开(公告)日：1998-05-22
申请号：JP29046296
申请日：1996-10-31
申请人： RICOH KK
发明人： MATSUURA ATSUKA , YAGISHITA TAKAHIRO
IPC分类号： H04N1/41
摘要： PROBLEM TO BE SOLVED: To realize both a high compression rate and excellent image quality with an inexpensive configuration automatically without imposing load onto the user. SOLUTION: Image data are divided into blocks for each of 2×2 pixels (a, b, c, d). A wavelet conversion section 402 converts each block into one low frequency component (LL) and three high frequency components (LH, HL, HH). An area discrimination section 403 uses characteristics of coefficients in the case of applying wavelet conversion to a binary area and a natural gradation area, a selection section 404 selects picture element values (a-d) not subject to wavelet conversion by the wavelet conversion section 302 for blocks of 'binary area edge' based on the discrimination result of an area discrimination section 303 and selects the coefficients (LH, HL, HH) subject to wavelet conversion in other blocks. A conversion circuit 405 assigns a sign to data selected by the selection section 404 and deletes low-order 3 bits.

3. 发明专利

JP2002108171A IMAGE FORMING APPARATUS 失效
公开(公告)号：JP2002108171A
公开(公告)日：2002-04-10
申请号：JP2000298315
申请日：2000-09-29
申请人： RICOH KK
发明人： YANAGAWA NOBUYUKI , SAITO MASANORI , MATSUURA ATSUKA
IPC分类号： G03G21/00 , G03G15/08 , G03G15/16 , G03G21/16 , G03G21/18
摘要： PROBLEM TO BE SOLVED: To provide an image forming apparatus or the like which imposes less burden on a user, a maker, and environments by preferentially changing components having short lives out of components constituting an image forming means. SOLUTION: Components (60 and 80) which are late in the detachment order out of components constituting the image forming means cannot be detached before components (1400 and 1400') which precede others in the detachment order are detached, and they are attached in the reverse order, and a component (500) which is a remaining component and is placed above a prescribed detaching direction can be retreated from the upper part of the prescribed detaching direction together with an enclosure 1060.

4. 发明专利

JP2002099193A IMAGE FORMING DEVICE 失效
公开(公告)号：JP2002099193A
公开(公告)日：2002-04-05
申请号：JP2000292335
申请日：2000-09-26
申请人： RICOH KK
发明人： YANAGAWA NOBUYUKI , SAITO MASANORI , MATSUURA ATSUKA
IPC分类号： G03G21/16 , G03G21/18
摘要： PROBLEM TO BE SOLVED: To materialize technology which eliminates the need to replace the whole imaging means for forming an image on an image carrier altogether in one body. SOLUTION: The imaging means is divided into several units and the order of the attachment and detachment of the respective units to and from an image forming device is predetermined; and a unit (6) which is late in the loading order can not be loaded in the image forming device (11) until a unit (5) which is precedent in the loading order is loaded in the image forming device (11), and the unit (5) which is late in unloading order can not be unloaded from the image forming device (11) until the unit (6) which is precedent in the unloading order is unloaded from the image forming device (11).

5. 发明专利

JP2001204017A IMAGE CODER 失效
公开(公告)号：JP2001204017A
公开(公告)日：2001-07-27
申请号：JP2000013734
申请日：2000-01-24
申请人： RICOH KK
发明人： YAMAZAKI YUKIKO , YAGISHITA TAKAHIRO , MATSUURA ATSUKA , SUZUKI HIROAKI
IPC分类号： H04N19/12 , H04N7/24 , H04N19/00 , H04N19/126 , H04N19/134 , H04N19/176 , H04N19/186 , H04N19/189 , H04N19/625 , H04N19/80 , H04N19/91
摘要： PROBLEM TO BE SOLVED: To obtain a high compression rate while keeping excellent image quality by selecting one of a plurality of compression systems. SOLUTION: A block dividing section 11 divides each version of an original image (a CMYK image in this case) being a compression object into macro blocks. A DCT transform section 12 applies DCT transform being a kind of orthogonal transforms to each block to breakdown each block into frequency components. The frequency component is fed to a quantization section 13, where the frequency component is linearly quantized with a different step size from each position of coefficient by a quantization table in the unit of blocks. The quantized coefficient is entropy-coded 14 and compressed with a variable length. A decoding section 15 at a decoder decodes the compressed code of each version into a quantized value through a reverse path to compression and an inverse quantization section 16 restores the quantized value into the frequency coefficient by a table of each version. Then an inverse DCT transform section 17 restores the frequency coefficient into density data to generate each version of the CMYK images.

6. 发明专利

JP2001086346A IMAGE-ENCODING DEVICE 失效
公开(公告)号：JP2001086346A
公开(公告)日：2001-03-30
申请号：JP26051299
申请日：1999-09-14
申请人： RICOH KK
发明人： YAGISHITA TAKAHIRO , YAMAZAKI YUKIKO , MATSUURA ATSUKA
IPC分类号： H04N11/04 , H04N1/41
摘要： PROBLEM TO BE SOLVED: To obtain high compression efficiency, while maintaining image contrast using a simple configuration. SOLUTION: This image encoding device that reduces the amount of information of image data composed of a plurality of color components and performs processing, is provided with a group-dividing means 1 for dividing the image data composed, of the plurality of color components into image data of color components which belong to a 1st group and image data of color components belonging to a 2nd group, and an amount of information reducing means 2 for reducing the amount of information of the image data of the color components of the 1st and 2nd groups divided by the group dividing means. Then, the means 2 makes the polarity of distortion quantity caused by reducing the amount of information of the image data of the color components of the 1st group and the polarity of distortion quantity caused by reducing the amount of information of image data of the color components of the 2nd group reverse in polarity to each other.

7. 发明专利

JP2000341532A IMAGE PROCESSOR 失效
公开(公告)号：JP2000341532A
公开(公告)日：2000-12-08
申请号：JP15275699
申请日：1999-05-31
申请人： RICOH KK
发明人： YAGISHITA TAKAHIRO , YAMAZAKI YUKIKO , MATSUURA ATSUKA
IPC分类号： H04N1/41 , H04N1/21 , H04N1/387 , H04N1/411 , H04N7/24 , H04N19/00 , H04N19/117 , H04N19/157 , H04N19/423 , H04N19/426 , H04N19/635 , H04N19/65 , H04N19/80 , H04N19/85 , H04N19/89 , H04N19/91 , H04N19/93
摘要： PROBLEM TO BE SOLVED: To enable an image processor to detect an accurate area attribute from picture data, when the processor nonreversibly compresses the picture data. SOLUTION: An image area separating section 5a detects an image area which separates signal from nonreversibly compressed or elongated image data, and another image area separating section 5b detects another image area separating signal from uncompressed image data. At formation of a first plate, the separated results of the separating section 5b are adopted, and at the same time, exclusively ORed results (c) of the separated results of the separating sections 5a and 5b are compressed nonreversibly and stored in a separation memory 8. At formation of a second and after second plates, the separated results of the separating section 5b are restored by exclusively ORing the data (c) stored in the memory 8 and the separated results (a) of the separating section 5a.

8. 发明专利

JP2000184206A IMAGE ENCODER 失效
公开(公告)号：JP2000184206A
公开(公告)日：2000-06-30
申请号：JP37546398
申请日：1998-12-14
申请人： RICOH KK
发明人： YAGISHITA TAKAHIRO , MATSUURA ATSUKA
IPC分类号： H04N1/40 , G06T9/00 , H04N1/41
摘要： PROBLEM TO BE SOLVED: To recognize image contents in an early stage in progressive transfer by making one of first and second transformation means generate a transformation value significant for both first and second coefficients and making the other transformation means generate the transformation value significant for only the second coefficient. SOLUTION: One of a wavelet transformation part 10 and a text transformation part 12 generates the transformation value significant for both first and second coefficients and the other transformation part generates the transformation value significant for only the second coefficient. An area judgement part 14 judges whether or not a block under consideration is an area satisfying a prescribed condition and the output of the text transformation part 12 is selected in the area satisfying the prescribed condition and the output of the wavelet transformation part 10 is selected in the other area in a selection part 16. Then, since one bit for indicating a result in the area judgement part 14 is added to selected data and the code of the area including information for representing the contents of images in the initial stage of transfer, the image contents are recognized in the early stage.

9. 发明专利

JPH1056573A BLOCK ENCODING METHOD 失效
公开(公告)号：JPH1056573A
公开(公告)日：1998-02-24
申请号：JP22770796
申请日：1996-08-09
申请人： RICOH KK
发明人： MATSUURA ATSUKA
IPC分类号： H04N19/124 , H03M7/30 , H04N1/40 , H04N1/41 , H04N1/415 , H04N7/24 , H04N19/00 , H04N19/14 , H04N19/176 , H04N19/186 , H04N19/196 , H04N19/423 , H04N19/426 , H04N19/86 , H04N19/90 , H04N19/91
摘要： PROBLEM TO BE SOLVED: To reduce image deterioration which is caused by block noise and to improve compressibility in an encoding method which divides image information into blocks and encodes them. SOLUTION: This method divides image data into block units, quantizes each pixel that is included in the block between the maximum and minimum values of each block and quantizes blocks. In such cases, quantization error which is caused when pixel is quantized is distributed to ambient pixels of the pixel. When the difference between the maximum and minimum values is equal to or more than a preliminarily fixed threshold, pixel is quantized with a 1st quantization bit number, and when it is less than the threshold, pixel is quantized with a 2nd quantization bit number which is smaller than the 1st one.

10. 发明专利

JP2002351287A IMAGING UNIT AND IMAGE FORMING DEVICE 审中-公开
公开(公告)号：JP2002351287A
公开(公告)日：2002-12-06
申请号：JP2002049777
申请日：2002-02-26
申请人： RICOH KK
发明人： AMEYAMA MINORU , TOMITA SATORU , SHINKAI YASUYUKI , MATSUURA ATSUKA , OTA KATSUICHI , MOROHOSHI NAOYA , ITABASHI AKIHISA , YANO TAKANORI , AOKI KATSUHIRO
IPC分类号： B41J29/00 , G03G15/00 , G03G21/00 , G03G21/18
摘要： PROBLEM TO BE SOLVED: To provide an imaging unit and an image forming device which do not need repurchasing the image forming device when a user wishes the change of the performance of the image forming device. SOLUTION: A plurality of types of an engine unit 2a and 2b... different in the performance are respectively provided with a nonvolatile memory means 212a and 212b.... The engine units 2a and 2b... can be replaced for installation with the image forming device. The image forming device inside is equipped with a control means 222 by which the overall device performance is controlled on the basis of the memory information of the memory means 212a and 212b... in the installed engine unit 2a and 2b.... This permits modifying the overall device performance relating to the recording rate and resolution or the like simply by replacing the engine units 2a and 2b... different in the performance even in the common image formation device. The versatile and diversified types of machines can be easily handled.

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