Image forming apparatus

Details Image forming apparatus Image forming apparatus

1991-06-12

1992-08-18

Evans, Arthur G.

Recorders

Record receiver deforming

395101, 346154, G06K 1500

Patent

active

051406730

ABSTRACT:
An optical printer head using LEDs, which is a form of image forming apparatus, comprises a plurality of arrays formed from a plurality of LEDs arranged in a straight line, the LEDs disposed symmetrically to each other in adjacent arrays being connected to respective individual signal lines formed in a cranked pattern extending from one array to the next, to supply printing data. Because the arranging order of the LEDs relative to the individual signal lines is reversed between adjacent arrays, prior art has required the provision of an external circuit for alternately reversing the arranging order of image data from one array to the next. On the other hand, according to the present invention, the optical printer head contains a hardware circuit configuration for reversing the arranging order of the input image data each time a signal generated for each array is supplied. As a result, the image data to be input to the optical printer head should only be supplied in accordance with the arranging order of the LEDs, and the arranging order of the thus input image data is changed accordingly in real time to drive the LEDs in the corresponding array. This serves to achieve the high speed driving of the optical printer head and the simplification of the circuit configuration.

REFERENCES:
patent: 3517258 (1970-06-01), Lynch
patent: 3740570 (1973-06-01), Kaelin et al.
patent: 4554637 (1985-11-01), Kuntze
patent: 4737924 (1988-04-01), Miki

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