PRINTING APPARATUS AND METHOD OF CONTROLLING PRINTING APPARATUS

A printing apparatus includes a carriage that moves in a direction crossing the conveyance direction of a print sheet, and a sheet edge detection sensor disposed on the carriage and having an LED and a phototransistor. The printing apparatus adjusts at least one of an LED driving circuit and an ampl...

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Bibliographic Details
Main Authors Kitazawa, Toshiyuki, Ogushi, Takuhiro
Format Patent
LanguageEnglish
Published 19.08.2021
Subjects
CALCULATING
COMPUTING
CORRECTION OF TYPOGRAPHICAL ERRORS
COUNTING
HANDLING RECORD CARRIERS
i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME
LINING MACHINES
PERFORMING OPERATIONS
PHYSICS
PRESENTATION OF DATA
PRINTING
RECOGNITION OF DATA
RECORD CARRIERS
SELECTIVE PRINTING MECHANISMS
STAMPS
TRANSPORTING
TYPEWRITERS
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Summary:A printing apparatus includes a carriage that moves in a direction crossing the conveyance direction of a print sheet, and a sheet edge detection sensor disposed on the carriage and having an LED and a phototransistor. The printing apparatus adjusts at least one of an LED driving circuit and an amplification circuit such that an output from the amplification circuit when LED emits light to a predetermined position on the print sheet is at a predetermined level. Also, after this adjustment but before detection of a sheet edge by the sheet edge detection sensor, the printing apparatus controls an extra-printing amount by which printing extends off the sheet edge based on an output from the amplification circuit.
Bibliography:Application Number: US202117166235