LED DRIVING CIRCUIT OF LED PRINTER
PURPOSE:To obtain a drive circuit for setting (N) LEDs to the definite emission quantity of light, by providing a selection circuit for selecting a single duty signal on the basis of a selection signal and inputting the duty signal to a control circuit to set all of LEDs to the definite emission qua...
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| creator | HIGUCHI FUKUJI ISHII TAKESHI |
| description | PURPOSE:To obtain a drive circuit for setting (N) LEDs to the definite emission quantity of light, by providing a selection circuit for selecting a single duty signal on the basis of a selection signal and inputting the duty signal to a control circuit to set all of LEDs to the definite emission quantity of light. CONSTITUTION:Duty signals different in a duty ratio are outputted from a duty signal output circuit and a single duty signal is selected from the duty signals different in the duty ratio on the basis of the selection signal inputted to a selection circuit. When the single duty signal is inputted to a control circuit, (N) MOS-FETs are brought to a driving or non-driving state by the single duty signal during a period when (N) MOS-FETs must be driven by (N) control signals and the driving times of (N) MOS-FETs are controlled in common. By this method, all of (N) LEDs are set to the definite emission quantity of light to perform printing at definite density. |
| format | Patent |
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CONSTITUTION:Duty signals different in a duty ratio are outputted from a duty signal output circuit and a single duty signal is selected from the duty signals different in the duty ratio on the basis of the selection signal inputted to a selection circuit. When the single duty signal is inputted to a control circuit, (N) MOS-FETs are brought to a driving or non-driving state by the single duty signal during a period when (N) MOS-FETs must be driven by (N) control signals and the driving times of (N) MOS-FETs are controlled in common. By this method, all of (N) LEDs are set to the definite emission quantity of light to perform printing at definite density.</description><language>eng</language><subject>CALCULATING ; COMPUTING ; CORRECTION OF TYPOGRAPHICAL ERRORS ; COUNTING ; ELECTRIC COMMUNICATION TECHNIQUE ; ELECTRICITY ; HANDLING RECORD CARRIERS ; i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME ; LINING MACHINES ; PERFORMING OPERATIONS ; PHYSICS ; PICTORIAL COMMUNICATION, e.g. TELEVISION ; PRESENTATION OF DATA ; PRINTING ; RECOGNITION OF DATA ; RECORD CARRIERS ; SELECTIVE PRINTING MECHANISMS ; STAMPS ; TRANSPORTING ; TYPEWRITERS</subject><creationdate>1989</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=19890721&DB=EPODOC&CC=JP&NR=H01184168A$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,780,885,25564,76547</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=19890721&DB=EPODOC&CC=JP&NR=H01184168A$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>HIGUCHI FUKUJI</creatorcontrib><creatorcontrib>ISHII TAKESHI</creatorcontrib><title>LED DRIVING CIRCUIT OF LED PRINTER</title><description>PURPOSE:To obtain a drive circuit for setting (N) LEDs to the definite emission quantity of light, by providing a selection circuit for selecting a single duty signal on the basis of a selection signal and inputting the duty signal to a control circuit to set all of LEDs to the definite emission quantity of light. CONSTITUTION:Duty signals different in a duty ratio are outputted from a duty signal output circuit and a single duty signal is selected from the duty signals different in the duty ratio on the basis of the selection signal inputted to a selection circuit. When the single duty signal is inputted to a control circuit, (N) MOS-FETs are brought to a driving or non-driving state by the single duty signal during a period when (N) MOS-FETs must be driven by (N) control signals and the driving times of (N) MOS-FETs are controlled in common. By this method, all of (N) LEDs are set to the definite emission quantity of light to perform printing at definite density.</description><subject>CALCULATING</subject><subject>COMPUTING</subject><subject>CORRECTION OF TYPOGRAPHICAL ERRORS</subject><subject>COUNTING</subject><subject>ELECTRIC COMMUNICATION TECHNIQUE</subject><subject>ELECTRICITY</subject><subject>HANDLING RECORD CARRIERS</subject><subject>i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME</subject><subject>LINING MACHINES</subject><subject>PERFORMING OPERATIONS</subject><subject>PHYSICS</subject><subject>PICTORIAL COMMUNICATION, e.g. TELEVISION</subject><subject>PRESENTATION OF DATA</subject><subject>PRINTING</subject><subject>RECOGNITION OF DATA</subject><subject>RECORD CARRIERS</subject><subject>SELECTIVE PRINTING MECHANISMS</subject><subject>STAMPS</subject><subject>TRANSPORTING</subject><subject>TYPEWRITERS</subject><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>1989</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNrjZFDycXVRcAnyDPP0c1dw9gxyDvUMUfB3UwAJBwR5-oW4BvEwsKYl5hSn8kJpbgZFN9cQZw_d1IL8-NTigsTk1LzUknivAA8DQ0MLE0MzC0djYtQAACP7Im4</recordid><startdate>19890721</startdate><enddate>19890721</enddate><creator>HIGUCHI FUKUJI</creator><creator>ISHII TAKESHI</creator><scope>EVB</scope></search><sort><creationdate>19890721</creationdate><title>LED DRIVING CIRCUIT OF LED PRINTER</title><author>HIGUCHI FUKUJI ; ISHII TAKESHI</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_JPH01184168A3</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>eng</language><creationdate>1989</creationdate><topic>CALCULATING</topic><topic>COMPUTING</topic><topic>CORRECTION OF TYPOGRAPHICAL ERRORS</topic><topic>COUNTING</topic><topic>ELECTRIC COMMUNICATION TECHNIQUE</topic><topic>ELECTRICITY</topic><topic>HANDLING RECORD CARRIERS</topic><topic>i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME</topic><topic>LINING MACHINES</topic><topic>PERFORMING OPERATIONS</topic><topic>PHYSICS</topic><topic>PICTORIAL COMMUNICATION, e.g. TELEVISION</topic><topic>PRESENTATION OF DATA</topic><topic>PRINTING</topic><topic>RECOGNITION OF DATA</topic><topic>RECORD CARRIERS</topic><topic>SELECTIVE PRINTING MECHANISMS</topic><topic>STAMPS</topic><topic>TRANSPORTING</topic><topic>TYPEWRITERS</topic><toplevel>online_resources</toplevel><creatorcontrib>HIGUCHI FUKUJI</creatorcontrib><creatorcontrib>ISHII TAKESHI</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>HIGUCHI FUKUJI</au><au>ISHII TAKESHI</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>LED DRIVING CIRCUIT OF LED PRINTER</title><date>1989-07-21</date><risdate>1989</risdate><abstract>PURPOSE:To obtain a drive circuit for setting (N) LEDs to the definite emission quantity of light, by providing a selection circuit for selecting a single duty signal on the basis of a selection signal and inputting the duty signal to a control circuit to set all of LEDs to the definite emission quantity of light. CONSTITUTION:Duty signals different in a duty ratio are outputted from a duty signal output circuit and a single duty signal is selected from the duty signals different in the duty ratio on the basis of the selection signal inputted to a selection circuit. When the single duty signal is inputted to a control circuit, (N) MOS-FETs are brought to a driving or non-driving state by the single duty signal during a period when (N) MOS-FETs must be driven by (N) control signals and the driving times of (N) MOS-FETs are controlled in common. By this method, all of (N) LEDs are set to the definite emission quantity of light to perform printing at definite density.</abstract><oa>free_for_read</oa></addata></record> |
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| subjects | CALCULATING COMPUTING CORRECTION OF TYPOGRAPHICAL ERRORS COUNTING ELECTRIC COMMUNICATION TECHNIQUE ELECTRICITY HANDLING RECORD CARRIERS i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME LINING MACHINES PERFORMING OPERATIONS PHYSICS PICTORIAL COMMUNICATION, e.g. TELEVISION PRESENTATION OF DATA PRINTING RECOGNITION OF DATA RECORD CARRIERS SELECTIVE PRINTING MECHANISMS STAMPS TRANSPORTING TYPEWRITERS |
| title | LED DRIVING CIRCUIT OF LED PRINTER |
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