Browse Prior Art Database

Interlace Unit For Multinozzle Ink Jet

IP.com Disclosure Number: IPCOM000048531D
Original Publication Date: 1982-Feb-01
Included in the Prior Art Database: 2005-Feb-08
Document File: 2 page(s) / 37K

Publishing Venue

IBM

Related People

Curlander, PJ: AUTHOR [+2]

Abstract

The above drawing shows an apparatus for organizing and supplying data to be reproduced by a multinozzle ink jet printer. Noncoded information (NCI) data is requested by the timing and control logic block 10. The response line latches the NCI byte in register (REG) 1. This data is then loaded into random-access memory (RAM) 1. The RAM stores KN(t) scan lines, where K is a nozzle separation and N(t) is the total number of Nozzles on a head.

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Interlace Unit For Multinozzle Ink Jet

The above drawing shows an apparatus for organizing and supplying data to be reproduced by a multinozzle ink jet printer. Noncoded information (NCI) data is requested by the timing and control logic block 10. The response line latches the NCI byte in register (REG) 1. This data is then loaded into random-access memory (RAM) 1. The RAM stores KN(t) scan lines, where K is a nozzle separation and N(t) is the total number of Nozzles on a head.

The address for RAM 1 is made up of three sections. It should be noted that each scan line consists of N segments and each segment consists of W words. The highest-order address portion points to the scan line being loaded. The middle-order section points to the segment of that scan line being loaded. The lowest-order address portion points to the word in that segment being loaded. The three address sections are generated by three counters.

Two sets of counters are needed. One set provides the input byte, and the other set provides the output byte. These counters count sequentially. That is, the word counter is incremented for every input byte. It counts modulo W. When it overflows, a segment counter is incremented, The segment counter counts modulo N(t). When it overflows, it increments the scan line counter. The scan line counter counts modulo KN(t).

The output address counters operate differently. A byte is read out for each nozzle and stored in RAM 2. Since each nozzle is printing on d...