JPH0243868U - - Google Patents
Info
- Publication number
- JPH0243868U JPH0243868U JP12149988U JP12149988U JPH0243868U JP H0243868 U JPH0243868 U JP H0243868U JP 12149988 U JP12149988 U JP 12149988U JP 12149988 U JP12149988 U JP 12149988U JP H0243868 U JPH0243868 U JP H0243868U
- Authority
- JP
- Japan
- Prior art keywords
- paper
- detection
- detection roller
- leading edge
- support member
- 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.)
- Pending
Links
- 238000001514 detection method Methods 0.000 claims description 12
- 238000003708 edge detection Methods 0.000 claims description 3
- 238000011144 upstream manufacturing Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 3
Landscapes
- Handling Of Cut Paper (AREA)
- Paper Feeding For Electrophotography (AREA)
- Controlling Sheets Or Webs (AREA)
Description
第１図は本実施例の搬送用紙の先端検知装置を
示す要部の側面図、第２図は同上の斜視図、第３
図は同上の実施例に用いられた信号検知部の作動
図、第４図は待機部材の駆動タイムチヤート、第
５図は信号検知部を逆特性状態に用いた場合の他
例構成図、第６図は本実施例を用いたプリンタの
構成図、第７図は従来の搬送用紙の先端検知装置
を合わせて示す側面図である。
７……用紙、１２……第１の検知コロ、１３…
…第２の検知コロ、１４……支持部材、１５……
信号検知部。
FIG. 1 is a side view of the main parts of the transport paper leading edge detection device of this embodiment, FIG. 2 is a perspective view of the same, and FIG.
The figure is an operation diagram of the signal detection section used in the above embodiment, FIG. 4 is a drive time chart of the standby member, FIG. 5 is another example configuration diagram when the signal detection section is used in the opposite characteristic state, and FIG. 6 is a configuration diagram of a printer using this embodiment, and FIG. 7 is a side view also showing a conventional conveyance sheet leading edge detection device. 7... Paper, 12... First detection roller, 13...
...Second detection roller, 14...Support member, 15...
Signal detection section.
Claims (1)
定時間阻止する待機部材の用紙搬送方向の上流側
近傍に設けられ、搬送される上記用紙の先端の到
達を検知する装置において、 定位置で回転される第１の検知コロと、この第
１の検知コロに対向して設けられ揺動可能な支持
部材で支持され前記第１の検知コロに接離可能に
圧接された第２の検知コロと、前記支持部材に対
設され前記支持部材の揺動量に対応して電気信号
が可変的に得られる信号検知部とを備え、搬送さ
れる前記用紙が前記第１及び第２の検知コロに挾
持された際の前記電気信号の変化に基づいて前記
用紙の先端の到達を検知することを特徴とする搬
送用紙の先端検知装置。[Claims for Utility Model Registration] A standby member is provided near the upstream side in the paper transport direction of a waiting member that blocks the progress of the paper being transported along a predetermined path for a predetermined period of time, and detects the arrival of the leading edge of the paper being transported. In the device, a first detection roller rotates in a fixed position, and is supported by a swingable support member provided opposite to the first detection roller and press-contacted to the first detection roller so as to be able to come into contact with and separate from the first detection roller. and a signal detection section that is disposed opposite to the support member and can variably obtain an electric signal in accordance with the amount of rocking of the support member, and the paper to be conveyed is detected by the first detection roller. and a leading edge detection device for conveyed paper, characterized in that the arrival of the leading edge of the paper is detected based on a change in the electrical signal when the paper is held between second detection rollers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12149988U JPH0243868U (en) | 1988-09-16 | 1988-09-16 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12149988U JPH0243868U (en) | 1988-09-16 | 1988-09-16 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0243868U true JPH0243868U (en) | 1990-03-27 |
Family
ID=31368559
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12149988U Pending JPH0243868U (en) | 1988-09-16 | 1988-09-16 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0243868U (en) |
-
1988
- 1988-09-16 JP JP12149988U patent/JPH0243868U/ja active Pending
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