JPH0214249B2 - - Google Patents
Info
- Publication number
- JPH0214249B2 JPH0214249B2 JP55165273A JP16527380A JPH0214249B2 JP H0214249 B2 JPH0214249 B2 JP H0214249B2 JP 55165273 A JP55165273 A JP 55165273A JP 16527380 A JP16527380 A JP 16527380A JP H0214249 B2 JPH0214249 B2 JP H0214249B2
- Authority
- JP
- Japan
- Prior art keywords
- paper
- paper feed
- feed tray
- tray
- amount
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H1/00—Supports or magazines for piles from which articles are to be separated
- B65H1/04—Supports or magazines for piles from which articles are to be separated adapted to support articles substantially horizontally, e.g. for separation from top of pile
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H1/00—Supports or magazines for piles from which articles are to be separated
- B65H1/08—Supports or magazines for piles from which articles are to be separated with means for advancing the articles to present the articles to the separating device
- B65H1/12—Supports or magazines for piles from which articles are to be separated with means for advancing the articles to present the articles to the separating device comprising spring
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H1/00—Supports or magazines for piles from which articles are to be separated
- B65H1/08—Supports or magazines for piles from which articles are to be separated with means for advancing the articles to present the articles to the separating device
- B65H1/14—Supports or magazines for piles from which articles are to be separated with means for advancing the articles to present the articles to the separating device comprising positively-acting mechanical devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2405/00—Parts for holding the handled material
- B65H2405/10—Cassettes, holders, bins, decks, trays, supports or magazines for sheets stacked substantially horizontally
- B65H2405/15—Large capacity supports arrangements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2511/00—Dimensions; Position; Numbers; Identification; Occurrences
- B65H2511/20—Location in space
- B65H2511/21—Angle
- B65H2511/214—Inclination
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2801/00—Application field
- B65H2801/03—Image reproduction devices
- B65H2801/06—Office-type machines, e.g. photocopiers
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Sheets, Magazines, And Separation Thereof (AREA)
Description
【発明の詳細な説明】
この発明は複写機等に用いる給紙装置の改良に
関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to improvements in paper feeding devices used in copying machines and the like.
従来複写機等において、給紙によつて給紙トレ
イ上に用紙が減少するに伴い給紙トレイが上昇す
る形式の給紙装置にあつては、給紙トレイを上下
動する駆動源の負荷が用紙の量によつて変る。こ
のため第１図に示すように給紙トレイａ上の用紙
ｂの量が多いときにｈであつたオーバラン量が用
紙ｂの量が減少するに伴い第２図h′のように増加
して用紙の走行性能を低下させ、紙詰りの原因と
なるなどの不具合があつた。 Conventionally, in copying machines, etc., the load on the drive source that moves the paper feed tray up and down is high for paper feed devices in which the paper feed tray rises as the number of sheets decreases on the paper feed tray. It varies depending on the amount of paper. Therefore, as shown in Fig. 1, when the amount of paper b on paper feed tray a is large, the overrun amount, which is h, increases as the amount of paper b decreases, as shown in h' in Fig. 2. There were problems such as deteriorating paper running performance and causing paper jams.
この発明はかかる不具合を改善する目的でなさ
れたもので、給紙トレイ上の用紙の量が変化して
もオーバラン量が一定となるようにした複写機等
の給紙装置を提供して、用紙の走行性能を向上さ
せ、紙詰りを防止しようとするものである。 The present invention was made with the aim of improving such problems, and it provides a paper feed device for a copying machine or the like in which the amount of overrun remains constant even if the amount of paper on the paper feed tray changes. The aim is to improve the running performance of the paper and prevent paper jams.
以下この発明を第３図以下に示す一実施例によ
り詳述すると、図において１は複写機等に設けら
れたこの装置の本体で、外枠２と該外枠２内に設
けられた給紙トレイ３とよりなり、上記給紙トレ
イ３は図示しない駆動手段により巻き上げベルト
１０を介して上下動されるようになつている。４
は上記給紙トレイ３上に収容された用紙で給紙ト
レイ３の上方に設置された給紙ローラ５により上
側から１枚ずつ搬送面Ａに沿つて給紙されるよう
になつていると共に、給紙に伴い用紙４が減少す
ると、図示しない駆動手段により給紙トレイ３が
上昇される。 The present invention will be described in detail below with reference to an embodiment shown in FIG. The paper feed tray 3 is configured to be moved up and down via a winding belt 10 by a drive means (not shown). 4
is a sheet of paper stored on the paper feed tray 3, and is fed one sheet at a time from above along the conveying surface A by a paper feed roller 5 installed above the paper feed tray 3. When the number of sheets 4 decreases as the sheets are fed, the sheet feed tray 3 is raised by a driving means (not shown).
一方６は負荷補正装置で、例えば引張りばね７
により構成されている。引張りばね７の一端は外
枠２の底部に固定されていると共に、他端は外枠
２底部に支承したプーリ８を迂回するワイヤ９の
一端に結着されている。そしてワイヤ９の他端は
上記給紙トレイ３の底面に固着されていて、給紙
トレイ３が上昇するに従い下方向への付勢力を増
大して、用紙４低減に伴う負荷の減少を補償する
ようになつている。 On the other hand, 6 is a load correction device, for example, a tension spring 7.
It is made up of. One end of the tension spring 7 is fixed to the bottom of the outer frame 2, and the other end is tied to one end of a wire 9 that bypasses a pulley 8 supported on the bottom of the outer frame 2. The other end of the wire 9 is fixed to the bottom surface of the paper feed tray 3, and as the paper feed tray 3 rises, the downward biasing force is increased to compensate for the reduction in load due to the reduction in paper 4. It's becoming like that.
しかして図示しない複写機等によつて複写が行
なわれる毎に給紙トレイ３上に用紙４が上側より
給紙され、給紙に伴い用紙４が減少すると図示し
ない駆動源により給紙トレイ３が上昇される。こ
のとき給紙トレイ３及びトレイ上の用紙４の上昇
に伴う慣性により最上部の用紙４の上面が搬送面
Ａより上昇するオーバランｈが生じる。従来では
このオーバランｈは、駆動源に加わる負荷が減少
すると大きくなる傾向にあつたが、この発明では
給紙トレイ３をばね７で下方へ付勢してなる負荷
補正装置６を設けて、給紙トレイ３上に用紙４が
減少しても駆動源に加わる負荷を一定にしたこと
から、第４図に示すように給紙トレイ３上に用紙
４が少なくなつてもオーバラン量ｈは用紙４が多
い場合とほぼ同一となり、安定した用紙４の走行
性能が得られるようになる。 However, each time a copy is made by a copying machine or the like (not shown), paper 4 is fed onto the paper feed tray 3 from above, and when the paper 4 decreases as the paper is fed, the paper feed tray 3 is moved by a drive source (not shown). be raised. At this time, an overrun h occurs in which the upper surface of the uppermost sheet 4 rises above the conveyance surface A due to inertia accompanying the rise of the paper feed tray 3 and the paper 4 on the tray. Conventionally, this overrun h tended to increase as the load applied to the drive source decreased, but in the present invention, a load correction device 6 is provided in which the paper feed tray 3 is urged downward by a spring 7, and the overrun h is increased. Even if the number of sheets of paper 4 on the paper tray 3 decreases, the load applied to the drive source remains constant, so as shown in FIG. This is almost the same as when there are many numbers, and stable running performance of the paper 4 can be obtained.
なお第５図及び第６図は負荷補正装置６の別の
実施例を示したもので、外枠２の底部と給紙トレ
イ３の底部間に複数の引張りばね１１を斜めまた
は垂直に張架してもよい。また第７図に示すよう
に圧縮ばね１２や第８図に示すように渦巻きばね
１３を利用して給紙トレイ３を下方向へ付勢して
もよく、さらに第９図に示すように外枠２の上部
と給紙トレイ３の間に圧縮ばね１４を設けるよう
にしてもよい。 5 and 6 show another embodiment of the load correction device 6, in which a plurality of tension springs 11 are stretched diagonally or vertically between the bottom of the outer frame 2 and the bottom of the paper feed tray 3. You may. Further, the paper feed tray 3 may be biased downward using a compression spring 12 as shown in FIG. 7 or a spiral spring 13 as shown in FIG. A compression spring 14 may be provided between the upper part of the frame 2 and the paper feed tray 3.
この発明は以上詳述したように、給紙トレイ上
の用紙が減少しても給紙トレイを上下動する駆動
源に加わる負荷が一定となるように給紙トレイを
ばねで下方へ付勢してなる負荷補正装置を設けた
ことから、給紙トレイ上昇に伴うオーバラン量を
常に一定にでき、これによつて用紙の走行性能の
向上が図れると共に、これに伴い紙詰りなども確
実に防止できるようになる。 As described in detail above, this invention biases the paper feed tray downward with a spring so that even if the number of sheets on the paper tray decreases, the load applied to the drive source that moves the paper feed tray up and down remains constant. Since a load correction device is installed, the amount of overrun caused by the rise of the paper tray can always be kept constant, which not only improves paper running performance but also reliably prevents paper jams. It becomes like this.
第１図及び第２図は従来の給紙装置の説明図、
第３図及び第４図はこの発明の一実施例を示す説
明図、第５図ないし第９図は他の実施例を示す説
明図である。
３は給紙トレイ、４は用紙。
FIGS. 1 and 2 are explanatory diagrams of a conventional paper feeding device,
FIGS. 3 and 4 are explanatory views showing one embodiment of the present invention, and FIGS. 5 to 9 are explanatory views showing other embodiments. 3 is the paper feed tray, 4 is paper.
Claims (1)
載置した給紙トレイ３を適宜駆動手段により上昇
させるものにおいて、上記給紙トレイ３上の用紙
４の量が変化しても駆動手段に加わる負荷が一定
となるように、上記給紙トレイ３をばね７で下方
へ付勢してなる負荷補正装置６を設けた複写機等
の給紙装置。1 In a device in which the paper feed tray 3 on which paper 4 is placed is appropriately raised by a drive means as the paper 4 decreases due to paper feeding, even if the amount of paper 4 on the paper feed tray 3 changes, the drive means does not A paper feed device such as a copying machine, which is equipped with a load correction device 6 that biases the paper feed tray 3 downward with a spring 7 so that the applied load is constant.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP55165273A JPS5790331A (en) | 1980-11-26 | 1980-11-26 | Paper feeder for copier etc |
| PH26495A PH24566A (en) | 1980-11-26 | 1981-11-16 | Sheet feeding device for a copying machine or the like |
| KR1019810004580A KR850001059B1 (en) | 1980-11-26 | 1981-11-26 | Paper feeders such as copiers |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP55165273A JPS5790331A (en) | 1980-11-26 | 1980-11-26 | Paper feeder for copier etc |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5790331A JPS5790331A (en) | 1982-06-05 |
| JPH0214249B2 true JPH0214249B2 (en) | 1990-04-06 |
Family
ID=15809193
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP55165273A Granted JPS5790331A (en) | 1980-11-26 | 1980-11-26 | Paper feeder for copier etc |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JPS5790331A (en) |
| KR (1) | KR850001059B1 (en) |
| PH (1) | PH24566A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006168835A (en) * | 2002-01-31 | 2006-06-29 | Canon Inc | Sheet feeding apparatus and image forming apparatus provided with the same |
| JP7204285B2 (en) | 2019-01-31 | 2023-01-16 | 理想科学工業株式会社 | Media feeder |
-
1980
- 1980-11-26 JP JP55165273A patent/JPS5790331A/en active Granted
-
1981
- 1981-11-16 PH PH26495A patent/PH24566A/en unknown
- 1981-11-26 KR KR1019810004580A patent/KR850001059B1/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| KR850001059B1 (en) | 1985-07-25 |
| JPS5790331A (en) | 1982-06-05 |
| PH24566A (en) | 1990-08-03 |
| KR830007302A (en) | 1983-10-19 |
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