Title:
記録装置および発光素子駆動用基板
Document Type and Number:
Japanese Patent JP7154079
Kind Code:
B2
Abstract:
A printing apparatus is provided. The apparatus comprises a light-emitting element, a light-receiving element including a first terminal and a second terminal, a reference current generator supplying a reference current, a comparator comparing a monitor current with the reference current, the light-receiving element supplying the monitor current to the second terminal in accordance with a light emission amount, a driver driving the light-emitting element based on an output of the comparator, and a reference voltage controller. The comparator includes a first input terminal connected to the second terminal and a second input terminal. The reference voltage controller supplies a reference voltage selected from at least two voltage values to the second input terminal, and to control the voltage of the second terminal to be a voltage according to the reference voltage.
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Inventors:
Wataru Endo
Masanobu Omura
Hiroki Shiomichi
Masanobu Omura
Hiroki Shiomichi
Application Number:
JP2018172823A
Publication Date:
October 17, 2022
Filing Date:
September 14, 2018
Export Citation:
Assignee:
Canon Inc
International Classes:
B41J2/47; H01S5/062; H01S5/0683
Domestic Patent References:
| JP2017063110A | ||||
| JP2006272552A | ||||
| JP2006076216A | ||||
| JP2005322678A | ||||
| JP2001274504A | ||||
| JP2006019751A | ||||
| JP2010157572A |
Attorney, Agent or Firm:
Patent Business Corporation Otsuka International Patent Office
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