Canon i320 Simplified Service Manual page 15

2) New functions
1. HAPS system
The printer adopts a HAPS system for the engine firmware, instead of the previously-used NATIVE system.
With the HAPS system, a part of processing functions of the engine firmware has been transferred to the host
computer processing, utilizing the computer processing to a maximum, thereby minimizing the engine
firmware processing. (Processing is conducted in "OutputModule", on the printer driver side.
Assigned tasks between engine firmware and OutputModule using the HAPS system
(as different from the past engine firmware processing functions)
1. Control command
2. Print mode
3. Print control
4. Delay control
5. Borderless printing (incl. counting waste ink amount in absorber on platen)
6. Head alignment
7. Others
* Scan overflow control
** Scan complement control
* Scan overflow control
As the printer cannot store the print data for one scan in the RAM, this function allows printing to start
before all print data for one scan is stored in the print buffer.
**Scan complement control (printing complement at print data break-up)
When the data transmission speed slows as a result of the computer's data processing capability and
load, the print data may break up due to the implementation of overflow scanning. In this case, the print
data is complemented at the next scan.
2. Borderless printing
The printer supports borderless printing only for postcard, L size paper and 4X6 size paper. Other paper sizes
(A4, LTR, etc.) are not supported.
< Possible problems with this function >
- Smearing on the message side of the postcard, and smearing on the address side in continuous borderless
printing
-> Clean the ribs on the platen
- Smearing on the backside of paper in continuous borderless printing
-> Clean the ribs on the platen
- Ink mist on the platen
-> Clean the ribs on the platen
3. No paper selection lever
The printer does not need adjustment using a paper selection lever. (Adjustment of the head-to-paper distance
when printing envelopes is not necessary.)
< Possible problems with this function >
- The head rubs against the paper when the amount of paper curl is large.
-> Correct the paper curl. (Less than 3mm)
-> In print modes other than borderless printing, conduct printing in the print quality assurance area of
the top and bottom edges. (Top margin: 28mm, bottom margin: 26.5mm)
3-1. Usage nozzle switching (HS/HQ)
3-2. Pass switching (HQ)
3-3. Multi-pass (fine) control
3-4. Power monitor (at Bk, 1 pass printing)
4-1. Smear processing
4-2. Scan delay
4-3. Page delay
15
Engine firm OutputModule
O -
- O
- O
- O
- O
- O
O O
O O
O O
O O
O O
- -
O -
O -