EP0415752A2
Expired / Lapsed
EP
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Image forming apparatus
Assignee: Canon Inc
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Filing: 1990-08-30
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Granted: —
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Expires: 2010-08-30
Abstract
Abstract There is provided an image forming apparatus such as copying apparatus or laser beam printer in which each section of the apparatus is controlled by using a fuzzy influence. The apparatus comprises: processors to form an image; a detector (163-2) to detect at least one state amount regarding the control of the processors; an inference operation unit to infer a control amount which is used in the control of the processors on the basis of the state amount; and a correction circuit to correct the delay amount of the control system in the inference. The processors include at least one of the charging device, exposing device, developing device, copy transfer device, paper feeding device conveying device, fixing device (163), and image forming mode setting device. A predetermined value is added to or subtracted from the value obtained by the fuzzy inference so as to suppress the influence by the delay amount of the control system.
Inventors
- 👤 Tokuharu C/O Canon Kabushiki Kaisha Kaneko
- 👤 Tadashi C/O Canon Kabushiki Kaisha Suzuki
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-29 04:48
CPC Classifications
G; G03; G03G; G03G15/00; G03G15/50; G03G15/20; G03G15/2003; G03G2215/00; G03G2215/00025; G03G2215/00118; Y; Y10; Y10S; Y10S706/00; Y10S706/90; Y10S706/902; Y10S706/903
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
71 words
An image forming apparatus comprising: a) a plurality of processing means for forming an image; b) detecting means for detecting at least one state amount regarding a control of the processing means; c) inference operating means for inferring a control amount which is used to control the processing means on the basis of the state amount; and d) correcting means for correcting a delay of a control system in said inference.
Claim 2
Dependent Claim
71 words
An image forming apparatus comprising: a) a plurality of processing means for forming an image; b) detecting means for detecting at least one state amount regarding a control of the processing means; c) inference operating means for inferring a control amount which is used to control the processing means on the basis of the state amount; and d) correcting means for correcting a delay of a control system in said inference.
Claim 3
Dependent Claim
129 words
An image forming apparatus having a plurality of processing means for executing a process to form an image onto a material to be recorded, comprising: a) a detector to detect at least one state amount regarding said process; b) a memory to store a rule for qualitatively making the state amount correspond to a control amount to control at least one of the processing means; c) function storing memory for storing functions in each of which the state amount and the control amount are expressed by at least one fuzzy set; d) inference operating means for inferring the control amount from the state amount in accordance with the rule; and e) correcting means for correcting a delay of a control system in the inference by the inference operating means.
Claim 4
Dependent Claim
129 words
An image forming apparatus having a plurality of processing means for executing a process to form an image onto a material to be recorded, comprising: a) a detector to detect at least one state amount regarding said process; b) a memory to store a rule for qualitatively making the state amount correspond to a control amount to control at least one of the processing means; c) function storing memory for storing functions in each of which the state amount and the control amount are expressed by at least one fuzzy set; d) inference operating means for inferring the control amount from the state amount in accordance with the rule; and e) correcting means for correcting a delay of a control system in the inference by the inference operating means.
Claim 5
Dependent Claim
136 words
An image forming apparatus having a plurality of processing means for executing a process to form an image onto a recording materials comprising: a) a detector to detect at least one state amount regarding said process; b) a memory to store a rule for qualitatively making the state amount correspond to a control amount to control at least one of the processing means; c) a function storing memory to store functions in each of which the state amount and the control amount are expressed by at least one fuzzy set; d) inference operating means for inferring the control amount from the state amount in accordance with the rule; and e) control means for controlling the rule which is uscd in the inference by the inference operating means in accordance with a delay of the control system.
Claim 6
Dependent Claim
136 words
An image forming apparatus having a plurality of processing means for executing a process to form an image onto a recording materials comprising: a) a detector to detect at least one state amount regarding said process; b) a memory to store a rule for qualitatively making the state amount correspond to a control amount to control at least one of the processing means; c) a function storing memory to store functions in each of which the state amount and the control amount are expressed by at least one fuzzy set; d) inference operating means for inferring the control amount from the state amount in accordance with the rule; and e) control means for controlling the rule which is uscd in the inference by the inference operating means in accordance with a delay of the control system.
Claim 7
Independent Claim
80 words
An apparatus according to any one of claims 1 to 3, wherein said apparatus is an image forming apparatus in which a latent image is formed onto a photo sensitive material and is visualized by developing means and a visual image is copy transferred onto a copy transfer paper, and said processing means include at least one of charging means, exposing means, developing means, copy transfer means, paper feeding means. conveying means, fixing means, and image forming mode setting means.
Claim 8
Dependent Claim
26 words
An apparatus according to claim 1 or 2, wherein the correcting means multiplies a predetermined coefficient to the control amount obtained by the inference operating means.
Claim 9
Dependent Claim
12 words
An apparatus according to claim 5, wherein said predetermined coefficient is variable.
Claim 10
Dependent Claim
18 words
An apparatus according to claim 6, wherein said coefficient is changed in accordance with a predetermined qualitative rule.
Claim 11
Dependent Claim
28 words
An apparatus according to claim 1 or 2, wherein the correcting means adds or subtracts a predetermined value to/from the control amount obtained by the inference operating means.
Claim 12
Dependent Claim
17 words
An apparatus according to claim 8, wherein said predetermined value which is added or subtracted is variable.
Claim 13
Dependent Claim
24 words
An apparatus according to claim 9, wherein said predetermined value which is added or subtracted is changed in accordance with a prcdetermined qualitative rule.
Claim 14
Dependent Claim
43 words
An apparatus according to claim 3, wherein said control means has: determining means for determining a dominant rule in the inference by the inference operating means, and a transition order memory to store a transition order of the dominant rule in said inference.
Claim 15
Dependent Claim
34 words
An apparatus according to claim 11, wherein said control means applies a weight to the document rule which was determined by the determining means and changes said weight in accordance with the transition order.
Claim 16
Dependent Claim
30 words
An apparatus according to claim 11, wherein the determining means determines the rule in which an influence by a consequent part of the rule is maximum as a dominant rule.
Claim 17
Dependent Claim
21 words
An apparatus according to claim 12, wherein the control means multiplies a predetermined coefficient to a consequent part of the rule.
Claim 18
Dependent Claim
16 words
An apparatus according to claim 14, wherein said predetermined coefficient conforms with a predetermined qualitative rule.
Claim 19
Dependent Claim
23 words
An apparatus according to claim 12, wherein the control means adds or subtracts a predetermined value to/from a consequent part of the rule.
Claim 20
Dependent Claim
16 words
An apparatus according to claim 16, wherein said predetermined value conforms with a predetermined qualitative rule.
References Cited (Backward Citations)
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