IMAGE FORMING APPARATUS
PROBLEM TO BE SOLVED: To prevent a trace of transfer discharge abnormality, which possibly occurs in constant-current control, especially, in low-temperature and low-humidity environment, from causing an image to have unevenness, white spots, etc., while suppressing the cost. SOLUTION: A specified v...
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| creator | ISHIBASHI MIKIO |
| description | PROBLEM TO BE SOLVED: To prevent a trace of transfer discharge abnormality, which possibly occurs in constant-current control, especially, in low-temperature and low-humidity environment, from causing an image to have unevenness, white spots, etc., while suppressing the cost. SOLUTION: A specified value of one standard which does not depend upon imaging conditions is so set that a maximum value of a transfer voltage is controlled to the specified value in a state wherein resistance variation of the whole system of an image forming apparatus becomes maximum, for example, only in low-temperature and low-humidity environment (S1), and the constant-current control is performed by controlling the maximum value of the transfer voltage by using the specified value so that the specified value is not exceeded (Y at S7). Consequently, a transfer deficiency can be prevented in a high-temperature and high-humidity state and an abnormal image can be prevented from being formed owing to excessive transfer voltage application in a low-temperature and low-humidity environment state without increasing the cost. COPYRIGHT: (C)2005,JPO&NCIPI |
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SOLUTION: A specified value of one standard which does not depend upon imaging conditions is so set that a maximum value of a transfer voltage is controlled to the specified value in a state wherein resistance variation of the whole system of an image forming apparatus becomes maximum, for example, only in low-temperature and low-humidity environment (S1), and the constant-current control is performed by controlling the maximum value of the transfer voltage by using the specified value so that the specified value is not exceeded (Y at S7). Consequently, a transfer deficiency can be prevented in a high-temperature and high-humidity state and an abnormal image can be prevented from being formed owing to excessive transfer voltage application in a low-temperature and low-humidity environment state without increasing the cost. COPYRIGHT: (C)2005,JPO&NCIPI</description><edition>7</edition><language>eng</language><subject>CINEMATOGRAPHY ; ELECTROGRAPHY ; ELECTROPHOTOGRAPHY ; HOLOGRAPHY ; MAGNETOGRAPHY ; PHOTOGRAPHY ; PHYSICS</subject><creationdate>2005</creationdate><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20050922&DB=EPODOC&CC=JP&NR=2005258287A$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,780,885,25563,76318</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20050922&DB=EPODOC&CC=JP&NR=2005258287A$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>ISHIBASHI MIKIO</creatorcontrib><title>IMAGE FORMING APPARATUS</title><description>PROBLEM TO BE SOLVED: To prevent a trace of transfer discharge abnormality, which possibly occurs in constant-current control, especially, in low-temperature and low-humidity environment, from causing an image to have unevenness, white spots, etc., while suppressing the cost. SOLUTION: A specified value of one standard which does not depend upon imaging conditions is so set that a maximum value of a transfer voltage is controlled to the specified value in a state wherein resistance variation of the whole system of an image forming apparatus becomes maximum, for example, only in low-temperature and low-humidity environment (S1), and the constant-current control is performed by controlling the maximum value of the transfer voltage by using the specified value so that the specified value is not exceeded (Y at S7). Consequently, a transfer deficiency can be prevented in a high-temperature and high-humidity state and an abnormal image can be prevented from being formed owing to excessive transfer voltage application in a low-temperature and low-humidity environment state without increasing the cost. 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SOLUTION: A specified value of one standard which does not depend upon imaging conditions is so set that a maximum value of a transfer voltage is controlled to the specified value in a state wherein resistance variation of the whole system of an image forming apparatus becomes maximum, for example, only in low-temperature and low-humidity environment (S1), and the constant-current control is performed by controlling the maximum value of the transfer voltage by using the specified value so that the specified value is not exceeded (Y at S7). Consequently, a transfer deficiency can be prevented in a high-temperature and high-humidity state and an abnormal image can be prevented from being formed owing to excessive transfer voltage application in a low-temperature and low-humidity environment state without increasing the cost. COPYRIGHT: (C)2005,JPO&NCIPI</abstract><edition>7</edition><oa>free_for_read</oa></addata></record> |
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| subjects | CINEMATOGRAPHY ELECTROGRAPHY ELECTROPHOTOGRAPHY HOLOGRAPHY MAGNETOGRAPHY PHOTOGRAPHY PHYSICS |
| title | IMAGE FORMING APPARATUS |
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