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US 7,126,622 B2Granted
Drive IC and optical print head
AssigneesSanyo Electric Co., Ltd., Tottori Sanyo Electric Co., Ltd.
InventorsMitsuhiro Omae, Osamu Nishikori
Life of this patent
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Abstract
A data signal which is output from a latch circuit (12) having five stages of latch circuits each storing one-line data signal to a drive circuit (16) for lighting each light emission unit is selected by a selection circuit (15) according to a 9-bit correction data signal for each of the light emission units stored in a Y-position correction data storage circuit (13). Thus, lighting timing of each light emission unit is adjusted, thereby performing printing having a preferable linearity.
Claims15
A driving IC for driving elements, comprising:
- a drive circuit that produces drive signals for driving n elements based on n data signals constituting a group of data signals;
- x-stage latch circuits that each store one of x groups of data signals;
- a delay control circuit that produces, by delaying a one-input timing signal or two-input timing signals, y lighting timing signals for determining timing with which data signals corresponding to the individual elements are fed to the drive circuit;
- and
- a select circuit including a data signal selector that selects the data signals corresponding to the individual elements from the x-stage latch circuits and a timing signal selector that selects lighting timing signals corresponding to the individual elements from the y lighting timing signals produced by the delay control circuit, the select circuit feeding, for each of the elements separately, the data signals selected by the data signal selector to the drive circuit in synchronism with the lighting timing signals selected by the timing signal selector.
2 more elements
Dependencies are inferred from the claim text.