1. A sheet post-processing device for post-processing a sheet, comprising:
placement means for placing sheets discharged from an image forming apparatus;
discharging means for successively discharging the sheets on the placement means;
offset means for shifting an edge of a non-stitching sheet from an edge of a stitching sheet on the placement means by a predetermined distance according to whether the sheet discharged on the placement means is subjected to a stitching process; and
stitching means for stitching edge portions of the stitching sheets in a stack in a state that the edge of the non-stitching sheet is shifted from the edges of the stitching sheets by the offset means, wherein in stitching the sheets, a first sheet and a last sheet in the sheets are not shifted by the offset means and stitched together to hold all sheets between the first and last sheets.
2. A sheet post-processing device according to claim 1, further comprising conveyor means for conveying the stack of the sheets stitched by the stitching means; and storing means for storing the stack of the sheets conveyed by the conveyor means.
3. A sheet post-processing device according to claim 2, wherein said conveyor means conveys the stack of the sheets to the storing means such that the edges of the sheets stitched by the stitching means are oriented toward upstream in a direction that the conveyor means conveys the stack of the sheets.
4. A sheet post-processing device according to claim 3, wherein said conveyor means conveys the stack of the sheets to the storing means such that the edges of the sheets stitched by the stitching means contact the conveyor means.
5. A sheet post-processing device according to claim 2, wherein said conveyor means conveys the stack of the sheets to the storing means such that the edges of the sheets stitched by the stitching means are oriented toward downstream in a direction that the conveyor means conveys the stack of the sheets.
6. A sheet post-processing device according to claim 5, wherein said conveyor means contacts only the sheets stitched by the stitching means.
7. A sheet post-processing device according to claim 1, wherein said stitching means stitches the stitching sheets at a position within a predetermined distance from the edges of the stitching-sheets.
8. A sheet post-processing device according to claim 1, wherein said offset means shifts at least one sheet between the first and last sheets not to be stitched together.
9. A sheet post-processing device according to claim 1, wherein said offset means includes a stopper which can be placed on a sheet on the placement means for holding the sheet, and can align the sheet discharged onto the placement means.
10. A sheet post-processing device for post-processing a sheet, comprising:
placement means for placing sheets discharged from an image forming apparatus;
discharging means for successively discharging the sheets on the placement means;
offset means for shifting an edge of a non-stitching sheet from an edge of a stitching sheet on the placement means by a predetermined distance according to whether the sheet discharged on the placement means is subjected to a stitching process; and
stitching means for stitching edge portions of the stitching sheets in a stack in a state that the edge of the non-stitching sheet is shifted from the edges of the stitching sheets by the offset means, wherein said offset means shifts the edge of the non-stitching sheet from an edge of a next non-stitching sheet.
11. A sheet post-processing device for post-processing a sheet, comprising:
placement means for placing sheets discharged from an image forming apparatus;
discharging means for successively discharging the sheets on the placement means;
offset means for shifting an edge of a non-stitching sheet from an edge of a stitching sheet on the placement means by a predetermined distance according to whether the sheet discharged on the placement means is subjected to a stitching process; and
stitching means for stitching edge portions of the stitching sheets in a stack in a state that the edge of the non-stitching sheet is shifted from the edges of the stitching sheets by the offset means,
wherein said offset means comprises a restraining member movable between a restraining position where the restraining member restrains and aligns the edge of the sheet discharged on the placement means and a retracting position where the restraining member is retracted from the restraining position, an urging member for urging the sheet discharged on the placement means by the discharging means toward the restraining member, and a sheet moving member movable between a first position where the sheet moving member moves the sheet on the placement means and a second position where the sheet moving member is located away from the sheet on the placement means to allow the urging member to urge the sheet.
12. A sheet post-processing device according to claim 11, wherein said urging member urges the sheet toward the restraining member so that the stitching sheet is placed on the placement means at a position different from that of the non-stitching sheet in a state that the restraining member is situated at the restraining position and the sheet moving member is situated at the second position.
13. A sheet post-processing device according to claim 12, wherein said urging member urges the sheet so that a forward edge of the stitching sheet is shifted from a forward edge of the non-stitching sheet by a predetermined distance.
14. A sheet post-processing device according to claim 13, wherein said urging member urges the sheets so that a forward edge of the non-stitching sheet is shifted from a forward edge of a next not-stitching sheet by a predetermined distance.
15. A sheet post-processing device according to claim 11, wherein said sheet moving member at the first position nips and moves the sheets on the placement means in a state that the stitching sheet is placed at a position different from that of the non-stitching sheet while the restraining member is situated at the retraction position.
16. A sheet post-processing device according to claim 11, wherein said sheet moving member moves the non-stitching sheets on the placement means at different positions.
17. A sheet post-processing device according to claim 11, further comprising a pressing member for pressing the sheets on the placement means after the non-stitching sheet is stacked on the stitching sheet and when the urging member urges a next stitching sheet while the restraining member is situated at the restraining position and the sheet moving member is situated at the second position.
18. An image forming apparatus comprising:
the sheet post-processing device according to claim 11;
designating means for designating the sheets as to whether the sheets are to be stitched or not; and
notifying means of sending, to the sheet post processing device, a signal of information of the sheets designated by the designating means as to whether the sheets are to be stitched or not.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. A system comprising:
a source of gas, the gas including NOx; and
material for filtering the gas, the filter material including a catalyst for converting NO to NO2, the catalyst consisting of manganese dioxide and copper oxide, and an alkali for adsorbing the NO2, wherein the alkali is coated on particles of the catalyst.
2. The system of claim 1, wherein the filter material further includes chromium oxide.
3. The system of claim 1, further comprising air conditioning apparatus downstream the filter material.
4. The system of claim 1, wherein the alkali includes potassium.
5. An NOx filter comprising:
a catalyst for oxidizing NO to NO2;
a first support structure for the catalyst;
an alkali for adsorbing the NO2;
a second support structure for the alkali;
the first support structure spaced apart from the second support structure and allowing the catalyst to be operated under conditions different than the alkali; and
wherein the catalyst and the alkali are independently optimizable.
6. The system of claim 5, further comprising a CATOX, wherein the catalyst and first support structure are integrated with the CATOX.
7. The system of claim 5, further comprising air conditioning apparatus midstream between the first and second support structures.
8. The filter of claim 5, wherein the catalyst includes manganese dioxide and copper oxide, and wherein the alkali material is potassium carbonate.
9. The filter of claim 5, wherein the catalyst includes at least one of noble metal, a transition metal, and iron.
10. A method of using the filter of claim 5, wherein the catalyst and alkali are used at different temperatures or pressures.
11. Apparatus comprising
a CATOX; and
a split layer PTF including a catalyst integrated with the CATOX and an alkali downstream from the catalyst, the catalyst oxidizing NO to NO2, the alkali adsorbing the NO2.
12. An environmental control system comprising:
a CATOX;
an air conditioning system (ACS) downstream from the CATOX; and
a post treatment filter downstream from the CATOX, the filter including a catalyst and alkali.
13. The system of claim 12, wherein the catalyst is midstream between the CATOX and ACS, and the alkali is downstream the ACS.